MAI COMPANY CONFIDENTIAL FIELD INFORMATION BULLETIN SERVICE GROUP(S): MINI MFG: S.T.C. NACS TYPE(S): 4405 MFG. MODEL(S): 2925 CATEGORY: MAGNETIC TAPE I/O DESC: 1600/6250 BPI GCR *** TABLE OF CONTENTS AS OF 07/03/94 *** FIB 00001.General Information.........................................11/13/89 FIB 00002.Switch settings and cable information on MPx systems........12/17/86 FIB 00003.Mandatory firmware change solves hangs......................09/02/88 FIB 00004.Lowest Acceptable Revision Levels (LARL)....................08/08/90 FIB 00005.NYLATCH tm Plunger & Grommet Part Numbers...................06/10/87 FIB 00006.Error F98 on high speed rewind..............................09/04/87 FIB 00007."CDI" error during backup on Basic Four 7X00 system.........10/30/87 FIB 00008.Switch setting error in service manual......................04/20/88 FIB 00009.ECN Prom change to allow 3600 foot Tape Reel & Fix F98 Error07/27/90 FIB 00010.Hardware kit to fix Top Lid Assembly on GCR Tape Drive......06/17/88 FIB 00011.Drops into Start-Stop Mode in Middle of Tape................06/22/88 FIB 00012.Low-Boy.(Desk High) Unpacking Information [ WPSF 534 ].....07/27/89 FIB 00013.Interpreting Fault Code Dictionary Status Codes.............07/28/89 FIB 00014.Notes on GCR Documentation..................................10/20/89 FIB 00015.Low Profile GCR Notes [ WPSF 569 ].........................11/22/89 FIB 00016.+26V Out of Tolerance (high). Interrmittent errors F98,CCF,C01/05/90 FIB 00017.Addendum To Window Release Mechanism Retrofit Kit (MM640109)05/02/90 FIB 00018.Escalation Procedure for GCR Tape Drive.....................06/18/90 FIB 00019.Problems with GCR Connected to GPx70........................07/31/90 FIB 00020.SCSI GCR DRIVE REQUIRES TERMINATOR FOR SELF-TEST............08/23/90 FIB 00021.Switch settings for two versions of the CS (scsi) card......04/28/94 FIB 00022.GPx 70 MT-4405 GCR SCSI.....................................04/16/91 FIB 00023.CC7 Errs at EOT, fails to write LEOT - caused by Write Prote06/21/91 FIB 00024.GCR Sensor Outputs and Troubleshooting Tips.................10/18/91 FIB 00025.Various Intermittant Problems...............................12/27/91 FIB 00026.Troubleshooting CCF Machine Checks..........................04/07/92 FIB 00027.Machine Check F16 During Load Sequence......................01/06/94 FIB 00028.IF & CS PCBA Firmware Upgrade [ WPSF 773R ].................08/10/92 FIB 00029.Installing single-ended SCSI version on an RPx7000..........06/17/94 MAGNETIC TAPE I/O-S.T.C.-2925-----------------------Table Of Contents Pg01 of 01 FIB 00001 11/13/89 *** General Information *** Transport Speed: 100 inches per second (streaming) Recording Densities: 1600 bits per inch (phase encoded) 6250 bits per inch (group-coded recording) Self-loading of tape Internal diagnostics Power Consumption: Operating 1024 BTU/hr 300 Watts Idle 853 BTU/hr 250 Watts Physical Dimensions: The nominal outside physical dimensions of the GCR Tape Drive are: Height 41.75 inches (1060.4mm) Width 19.25 inches (488.9mm) Depth 27.5 inches (698.5mm) BASIC FOUR GENERAL INFORMATION The GCR tape drive will always operate with a built-in cache; it is not user selectable. The drive will operate at 100 IPS. The data density is user selectable at either 1600 or 6250 BPI. The tape drive does not have a user selectable start/stop mode versus streaming mode. Currently, the GCR tape drive does not support daisy chaining to any other MTR, MTS or GCR tape drive. When SAVERESTORE is selected, it reads the first few blocks into its buffer and the tape density is automatically set. To reset the tape density see the following examples: 1. Select tape drive 6250 density. 2. Go into SAVERESTORE (At this point, the tape drive density changes from 6250 to 1600). 3. Initialize the tape (At this point, the tape drive density changes from 1600 to 6250) The above example is using a tape that had a density of 1600 BPI. Tapes written in 6250 density, can only be read or appended at 6250. Tapes written in 1600 density can only be read or appended at 1600. It is recommended that tapes be labeled for the density used on the tapes. This will eliminate any possible confusion. Do not use GCR Internal Diagnostics when the drive is On-line. This can cause the BMTC controller to jam and report an erroneous TAPE OFFLINE condition which requires a system load to clear. At the 6250 BPI density, four times the data is stored in the same space as compared to 1600 BPI. To avoid a potential data MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB001 Pg001 integrity and other intermittant problems, users should use the tape media certified for 6250. NOTE: The GCR should be cleaned once every 8 hour shift. *** NACS MACHINE TYPES AND FEATURE NUMBERS *** 4405 *** AVAILABLE DOCUMENTATION *** MBF M8140 Two Volume set; Service Manual and Logics NOTE: There is a switch setting error in VOL I, page 3-7, SW1 (or SW A, KC-37 as it is variously described) on the CP card. SW Position ------------------------------------- 10 9 8 7 6 5 4 3 2 1 Is------------ C C O C O O C C C C Should be----- C C O O O O C C C C C = closed O = open *** AVAILABLE TRAINING *** Formal training with 7000/8000/9000 Systems *** SPECIAL TOOLS *** Master Skew Tape - P/N MM629010 Torx Wrenches - P/N OR000072 *** SPECIAL ADMINISTRATIVE PROCEDURES *** None ORIGINATOR: N. Jones MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB001 Pg002 FIB 00002 12/17/86 *** Switch settings and cable information on MPx systems *** SWITCH SETTINGS C = closed O = open SWITCH POSITIONS PCBA NAME SWITCH LOCATION 1 2 3 4 5 6 7 8 9 10 --------- --------------- - - - - - - - - - -- CP KC-37 (Switch A) C C C C O O O O C C CP KC-47 (Switch B) O O C C C O C C C C IF HA 09 C C O C C O The switch settings for the BMTC are the same as for the MTS. CABLE INFORMATION BMTC connector J3 is connected to the PA PCBA J6A via P/N 907065-004. BMTC connector J2 is connected to the PB PCBA J7A via P/N 907065-004. Ac power cable requires a standard 115 volt NEMA 5-15 outlet. NOTES The BMTC controlier must be at or above Revision U. The Basic Four Operating System must be at or above 8.5C/9.5C. ORIGINATOR: L. SANDERS MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB002 Pg001 FIB 00003 09/02/88 *** Mandatory firmware change solves hangs *** The new MPx software release (8.6/9.6) has uncovered a problem that causes a hang under certan conditions. A firmware change to the CP and IF PCBA's will correct the problem. Revision level of the boards with the new PROMs should be: MM640003 "IF" PCBA 403923205 MM640013 "CP" PCBA 403864305 If the board revision is not as indicated above, check firmware part numbers against the following table. If the firmware matches the table for the PCBA, then the upgrade was performed in the field and the board revision was not changed at the time of upgrade. (Please correct the revision level) Location Firmware P/N Board type Firmware kit P/N ========. ============ ========================== ================ PA57 403924105 "IF" (Interface Processor) \ PA65 403924205 " \ PA73 403924305 " > MM640050 PA81 403924405 " / PA89 403924505 " / PC26 403936303 "CP" (Cache Buffer) \ PC34 403936403 " > MM640049 If the above PCBA's do not have the correct firmware, order the following kits: For MM640003 ("IF" PCBA) order MM640050 (INCLUDES 5 PROMS) For MM640013 ("CP" PCBA) order MM640049 (INCLUDES 2 PROMS) =============================================================================== : NOTE: THIS IS A MANDATORY CHANGE AND SHOULD BE DONE ON THE NEXT SERVICE CALL : ENSURE THE PCB REVISION LEVEL IS MARKED CORRECTLY AFTER INSTALLING NEW FIRMWARE. =============================================================================== ORIGINATOR: J. VanderHayden/A. Mollyhorn MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB003 Pg001 FIB 00004 08/08/90 *** Lowest Acceptable Revision Levels (LARL) *** The Lowest Acceptable Revision Levels (LARL) for the 4405 tape drive (GCR) are as follows: MBF VENDOR MINIUM PART PART ACCEPTABLE CURRENT NUMBER NUMBER DESCRIPTION REVISION REVISION -------- ---------- ------------------ --------- --------- MM640001 400652-101 PCBA, WR 403503203 403503303 MM640002 400652-102 PCBA, RD 403504203 403504303 MM640003 400652-103 PCBA, IF 403923205 403923310 MM640004 400652-104 PCBA, DP 403633302 403633307 MM640005 400652-105 PCBA, MO 403875202 403875302 MM640006 400652-106 PCBA, DG 403378203 403378203 MM640009 400652-109 PCBA, PK 402055409 402055509 MM640010 400652-110 PCBA, NK 402213402 402213403 MM640011 400652-111 PCBA, AK 403839201 403839201 MM640012 400652-112 PCBA, SV 402239416 402239419 MM640013 400652-113 PCBA, CP 403864305 403864307 MM640119 400652-152 MOTHER BOARD, SCSI 403960301 403960301 MM640120 400652-153 PCBA, CS (SCSI IF) 404039209 404039209 ORIGINATOR: J.O'Brien MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB004 Pg001 FIB 00005 06/10/87 *** NYLATCH tm Plunger & Grommet Part Numbers *** The NYLATCH tm Fasteners used to retain the Vacuum Column/Takeup Reel covers are easily broken during re-insertion/re-assembly. NACS now stocks them and has added them to the Spares Matrix for Machine Type 4405. The STC Parts Breakdown has two part numbers shown, but refers to both parts as 'fastener' or 'fastener, grommet'. For this reason, the STC part numbers are not used as the vendor part numbers for the NACS Inventory System. Instead, the part numbers shown are those of the manufacturer of the fastener (HARTWELL Co.) Note that NACS ordered 'special' grommets which may outlast the originals. Please order the following Code 'B' for local stock. NACS ICN Vendor Part Number Description ---------- ------------------ -------------------------------------- MM640047 HN5G-55-11 Grommet, NYLATCH 5/16" MM640048 HN5P-55-1-1 Plunger, NYLATCH 5/16" ORIGINATOR: J. VanderHeyden MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB005 Pg001 FIB 00006 09/04/87 *** Error F98 on high speed rewind *** SYMPTOM: Tape drops ready/error F98 during high speed rewind operation. PROBLEM DETERMINATION: The book calls out 2 PCBAs as the likely cause, but the problem is caused by a faulty speed sensor in the capstan motor. This is a known problem and has appeared at several accounts. FIX: Replace the capstan motor - p/n MM640021 ORIGINATOR: Spencer Schwartz MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB006 Pg001 FIB 00007 10/30/87 *** "CDI" error during backup on Basic Four 7X00 system *** When backing up large files using a 4406 tape drive on a MPx 7000 system, it is possible for the tape drive to error with "CD1". This only occurs in "TYPE 2" saverestore. A "CD1" error occurs when the "tape drive transfer complete interrupt" does not come from the IF card in a specified amount of time. The workaround is to change the data rate on the CP card at location KC 37 from 500KB to 313KB. See the settings below: Settings of SW1 at location KC 37 DATA RATE 1 2 3 4 5 6 7 8 9 10 --------------------------------------------------------------- OLD (500KB) ON ON ON ON OFF OFF OFF OFF ON ON NEW (317KB) OFF ON ON ON OFF OFF OFF OFF ON ON ORIGINATOR: L. Sanders MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB007 Pg001 FIB 00008 04/20/88 *** Switch setting error in service manual *** There is an error on page 3-7 of the Service Manual M8140 Vol I, in the setting of SW1 (sometimes refered to as SWA or KC-37) on the CP PCBA, which causes various intermittant errors including CCF. The correct settings are: SW Position ------------------------------------- 10 9 8 7 6 5 4 3 2 1 Is------------ C C O C O O C C C C Should be----- C C O O O O C C C C C = closed O = open Please make corrections to service manuals at all sites. ORIGINATOR: Norm Jones MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB008 Pg001 FIB 00009 07/27/90 *** ECN Prom change to allow 3600 foot Tape Reel & Fix F98 Error Codes *** A prom change has been incorperated to allow the GCR tape drive to accommo- date 3600 foot tape reels . This ECN will also fix F98 error codes (physical EOT runoff) and add error codes F51 & F52 (added load on-line for SCSI , intermittent BOT display . There are two prom kit numbers for both the IF card and CP card , numbers are as follows: 400652-146 PROM UPGRADE , IF MM640059 GRID LOCATION PROM NUMBER ------------- ----------- PA 57 403924108 NOTE: Last two digits represent PA 65 403924208 prom level. 403924109 would be a PA 73 403924308 hihger rev. level than 403924108. PA 81 403924408 PA 89 403924508 400652-147 PROM UPGRADE , CP MM640060 GRID LOCATION PROM NUMBER ------------- ----------- PC 26 403936304 PC 34 403936404 NOTE: The prom kits must be installed at the same time . ORIGINATOR: J.O'Brien MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB009 Pg001 FIB 00010 06/17/88 *** Hardware kit to fix Top Lid Assembly on GCR Tape Drive *** SYMPTOM: Top lid assembly uses metal roller assemblies , that cause metal ware and fillings to accumulate on tape deck . PROBLEM DETERMINATION: Poor design . FIX: Order Door Upgrade Kit (400652-376) MM640061 and install . ORIGINATOR: J.O'BRIEN MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB010 Pg001 FIB 00011 06/22/88 *** Drops into Start-Stop Mode in Middle of Tape *** SYMPTOM: Drive drops out of streaming mode before the end of tape and remains in start-stop mode until the end of tape. May occur anywhere in the tape but remains in start-stop until the end of tape. FIX: Replace the file protect sensor. COMMENTS: The fileprotect sensor is used to sense the speed of the supply reel, this is used to detect early EOT. This circuit is NOT explained in the manual! It is normal for the drive to drop into start stop-mode during the last 100' of tape (early EOT). It is also normal for the drive to appear to be in start-stop mode when backing-up short files as the cache buffer is flushed at the end of each file. ORIGINATOR: N. Jones MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB011 Pg001 FIB 00012 07/27/89 *** Low-Boy (Desk High) Unpacking Information [ WPSF 534 ] *** PROBLEM: There have been several complaints from the field concerning the installation of the low-boy GCR. The problem is that the manual for this tape drive is shipped in the bottom of the GCR cabinet, not in a seperate box, and it can not be referenced for installation purposes. SOLUTION: On the outside of the carton is a clear envelope marked "UNPACKING INSTRUCTIONS". This envelope contains the information needed to unpack the unit to the point where the unit is ready to be cabled-up and the manuals accessed. ORIGINATOR: D. Jensen MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB012 Pg001 FIB 00013 07/28/89 *** Interpreting Fault Code Dictionary Status Codes *** In the Fault Code Dictionary status codes are frequently referred to. These codes could be Ax,Bx or Cx (x=hex number 0 through F). This is how to interpret a status word: 1) After you look up an error in the Fault Code Dictionary it might refer to information found in a status byte. There are three diagnostic status byte areas, 0A, 0B and 0C. 2) On the GCR front panel hit "enter diag" and enter A,B or C. You then hit "enter" to toggle through the different bytes. If you entered "A" then after hitting "enter" and keeping it depressed you would see A0 on the LED. When you release "enter" you can see the status byte for A0. To view the next status byte repeat the procedure. You can do this till AF and then it reverts back to A0. 3) After you get the needed status byte hit 'clear' to clear the diagnostic entry mode. Here is an example: 1) While running the self test diagnostics using the front panel it aborts with an error of 4CA during the TEST4C. Looking up the error in the Fault Code Dictionary it states: "Status A-0,A-1: Low, high byte of record number (first WTM occurs at 10 hex) See description of reject codes preceding code E01." ***NOTE: The contents of A-1 and A-0 are NOT error codes but only keep track of the record number that generated the error. Unless the status byte points to A-5 then the contents of these status bytes generally refers to the number of errors encountered in the diagnostic, a diagnostic counter, a record counter etc. A-5 on the other hand points directly to a hardware Exx status code.*** When you turn to the paragraph preceding E01 it states: "The following codes are not displayed on the panel as such, but referred to by other code descriptions in this dictionary. The Exx codes indicate rejects, where xx is the hex equivalent of reject codes normally returned to the host system. In this case they were actually returned to the internal diagnostics which has left them in a fixed status location: Status A-5=xx, see code Exx" You would then hit "enter diag" on the front panel and enter "A". Then toggle till you reach A5. If A5 returned with a status of 0C you would then look up E0C in the fault code dictionary. It would tell you : "Write status was not detected. Card: WR IF Slot: A4 A3" ORIGINATOR: Kim Yaworsky MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB013 Pg001 FIB 00014 10/20/89 *** Notes on GCR Documentation *** I. Memory map clarification The Service Manual M8140 Vol 1 has several memory maps in the Appendices. These cover several models of the GCR tape drive and cause considerable confusion. MBF's model of GCR uses two of the memory maps, they are: A. APPENDIX D - Memory Allocation, Standard Interface - 2822 This memory map covers memory in the IF Card. Any fault code in the Fault Code Dictionary which starts with any number other than 'C' (codes other than Cxx) and references a memory location, is referring to memory in the IF Card and this memory map can be referenced. B. APPENDIX F - Memory Allocation, Standard Interface 2925 CB card This memory map should also indicate CP Card, it covers memory in the CP PCBA. Any fault code in the Fault Code Dictionary which starts with 'C' (Cxx) and references a memory location, is referring to memory in the CP PCBA and this memory map can be referenced. C. Both of the above memory maps show unique memory locations which may prove useful for problem diagnosis in routines other than when called out in fault codes. They can be displayed using various front panel diagnostic routines. II. Logic Diagram Clarification Service Manual M8140 Vol 2 contains two different sets of logics which have similar (in some cases the same) page numbers and to/from designators for signal names. The two sets of logics serve differnt purposes and reference only signals in the same logic set. There are no dividers or easy ways to distinguish them, consequently this is a cause of much confusion. A. The first set of logics in Vol 2 only show signal interconnections between PCBAs and to/from PCBAs and other parts of the GCR. These logic pages indicate SYSTEM PAGE in a block in the right center portion of the reference information accross the bottom of the page. To/from designations refer only to other signal interconnection logic pages also labeled SYSTEM PAGE. Many of these logic pages have the same name as a logic page in the PCBA logic section (ex. CP010). B. The second set of logic pages does not have the label SYSTEM PAGE. These are the actual logic diagrams and use IBM logic blocks. Some familiarity with IBM logic symbols is required to make any sense of these logics. To/from designations refer only to other PCBA logic pages, not to the signal interconnection pages. Some signals do not have to/from designations in the PCBA logics when entering or exiting a PCBA. You can refer to the signal MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB014 Pg001 interconnection logics to determine where the signal comes from or goes, and then search the appropriate PCBA logic section for the signal name. C. Logic page code summary 1. Interconnection logics a. CP - CP Card b. DP - Data Path Card c. DT - Read Card d. GS - General Sensor connections e. HP - High Positive Voltage Connector f. HV - High Voltage Connector g. IC - PB/J7 connector h. IF - IF Card i. IJ - PA/J6 connector j. LV - Low Voltage connector k. MC - Motor connector l. OP - Operator Panel connector m. PA - Adapter Card PA, Industry Standard n. PB - Adapter Card PB, Industry Standard o. RL - EPO Relay p. SC - Servo Card q. WR - Write Card r. ZZ - Bidirectional Busses 2. PCBA Logics a. AK - AK Regulator Card b. DG - Operator Panel c. DP - Data Path Card d. AB - EOT Sensor e. KK - Operator Panel f. NK - NK Regulator Card g. PK - Power Supply Card h. RD - Read Card - assembly # 403504203 i. RD - Read Card - assembly # 403504303 j. SV - Servo Card - assembly # 402239316 k. SV - Servo Card - assembly # 402239417 l. WR - Write Card m. BD - Power System Block Diagram n. IF - Interface Card o. CP - CP Card ORIGINATOR: Norm Jones MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB014 Pg002 FIB 00015 11/22/89 *** Low Profile GCR Notes [ WPSF 569 ] *** The following provides helpful unpacking information and an updated parts list for the new 'Top Latch Window Cover' assembly. UNPACKING To help in the unpacking of the Low Profile GCR tape unit, the use of a TORX wrench is required. This wrench is not supplied with the GCR tape unit, it must be acquired. TORX wrenches are available from SPA under P/N OR000072. The HEX wrench key that is supplied with the GCR tape unit is used to remove the outer side panels. For access to the inside of the GCR tape unit, a TORX screw is used as a plunger to release the top access latch. This TORX screw is located inside the top cover at the left front corner. Use the TORX wrench to back out this screw about 3/4-inch, this will allow it to act as a plunger. Push down on this screw and the top assembly will rotate up. Access is now provided to retrieve manuals, AC cable, and installation of cable ground straps. TOP LATCH WINDOW COVER ECN 13842 has been released for ARL update of the vendor's new part numbers, revision changes, and also releases new latch assembly. The latch assembly is field upgradable, MBF P/N 400652-379. Refer to the attached ECN. ORIGINATOR: Don Luque MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB015 Pg001 FIB 00016 01/05/90 *** +26V Out of Tolerance (high). Interrmittent errors F98,CCF,CC8,CC0 *** SYMPTOM/TEXT: The +26V (+-4V) goes high with tape loaded (+31.04-+31.89) and fluctuates). The drive has intermittent failures F98(NMI:Swing arms looped out), CCF,CC8,CC0 (Cache buffer). Swapping the suggested PCBA'S (F98-SV,IF,CCx-DP,WR,IF,CB) and the power supply components (AK,NK PCB and transformer) did not affect the voltage or the errors. FIX: Replace the mother board (MM640005). The mother board has three 1 ohm 5% resistors & U1 caps on it. These are in the circuits for the +HV (+26/38V) and -HV (-26/38V) signals which control the motors. The test points are: PIN B01 SLOT A3 = GROUND, TEST POINT VOLTAGE AO1 +5.1(+-0.25)MAX RIPPLE:100mV P-P CO3 +15 (+1.0,-1.5) . CO1 -15 (+1.0,-1.5) C05 +26 (+-4.0) C17 -26 (+-4.0) C05 +38 (32-42)IN REWIND ONLY C17 -38 (32-42)IN REWIND ONLY ORIGINATOR: Bob Berard MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB016 Pg001 FIB 00017 05/02/90 *** Addendum To Window Release Mechanism Retrofit Kit (MM640109) *** REMOVAL: Remove the existing black slide latch by removing the (2) # 8 nuts. A washer and steel sleeve will fall when each nut is removed. Remove the plastic bushings from the slide latch once it is removed. Remove the (2) # 4 screws from the slide latch that retains the lock. Save all the hardware as it will be reused. Remove the latch body from the cover by removing (2) # 6 nuts from the cover. The button can come out of the bezel at this time. Remove the (2) # 4 screws from the bottom side of the bezel and remove it. Save all of the hardware. If the window release catch is made of aluminum, then it must be replaced. No Catch is supplied with this kit and it must be ordered seperately, the part number is MM640088 (Window Release Catch). If the window release catch is made of plastic then it does not have to be removed, but the (2) # 4 nuts can be loosened at this time. INSTALLATION: Slip the bezel into the opening in the cover. Install the # 4 screws into the bezel and tighten both screws only until the bezel is snug. Do not overtighten! Insert the button into th bezel from the backside. A small piece of tape on the front of the cover over the button is helpful in holding the button in place until the body is installed. Install the switch lock in the body. Mount the body on the (2) # 6 studs in the cover. Rotate the lock out of the way and secure the body with the (2) # 6 nuts. Make sure that the body goes in squarely with it's bottom flush with the return flange of the cover. The body will probably not actually bottom against the front of the cover. Put a plastic bushing in each of the slots of the new slide bracket with the naeeow flange on the side with the finger tab. Install the slide latch onto the cover with the # 8 studs going thru the plastic bushings. Put a washer over the stud closest to the body followed by the cap nut. Tighten the cap nut securely. Install one of the steel sleeves over the other stud followed by a washer and nut. Tighten the nut securely. Rotate the switch lock down flush against the slide latch and install the (2) # 4 screws to hold it to the slide latch. WARNING: The window can not be opened or closed when the slide latch is in the "left" position. Forcing the window shut with the slide latch in the "left" position will damage the unit. At this time, if the window catch was removed, attach the window catch to window with the (2) # 4 nuts. Do not tighten the nuts at this time. Close the window making sure the window catch goes into the slot in the body. From beneath the cover, tighten the (2) # 4 nuts. They can be accessed thru the rectangular opening in the plate above the body. Close the top cover. ADJUSTMENTS: Remove any tape from the button and press the button to release the window. If the window closes smoothly and the button snaps back to flush with the bezel, no adjustments are necessary. When the window is closed, if the movement seems to be in (2) steps, loosen the # 4 nuts and slide the window catch toward the back of the window. If the button does not return to flush with the bezel, loosen the # 4 nuts and move the window catch closer to the MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB017 Pg001 front of the window. When the catch is positioned correctly, tighten the # 4 nuts to secure the catch. ORIGINATOR: J.O'Brien MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB017 Pg002 FIB 00018 06/18/90 *** Escalation Procedure for GCR Tape Drive *** SYMPTOM: Repeated call-backs on GCR Tape Drives, are begining to cause a field problem. PROBLEM DETERMINATION: The GCR is a very sound tape device, with many hours of error free running. This product has been in the field for five years and is now starting to experience intermittent failures. This does present a problem, in the fact that we do not have alot of trouble-shooting experience. FIX: It is now being asked that National Support be notified on all call-backs for the GCR Tape Drive. Storage Tech. (manufacture of the GCR Drive) has supplied a list of technical support phone numbers to NSS. The normal channel of contacting NSS thru the RPSS should be used. ORIGINATOR: J.O'Brien MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB018 Pg001 FIB 00019 07/31/90 *** Problems with GCR Connected to GPx70 *** SYMPTOM: Using dump command, uses less than a full reel (around 1" into the reel), then asks for another tape. FIX: The GCR driver defaults are currently incorrect, they may be corrected in a future OS release but the following command will always work: /etc/dump 0ufsd /dev/rmt/tg0h 2400 6250 /usr2 NOTE: options mean: 0 = dump entire file system (could use 0 - 9) u = update /etc/dumpdates file with date f = device file name will be supplied (/etc/rmt/tg0h) s = tape length, 2400 is shown in example, use correct tape length if other than 2400' d = tape density, 6250 is shown in the example which is high density for the GCR Options must be grouped together immediately following the dump command, the corresponding values must follow in the same order the options are entered, and the file system to be saved must be the last entry. SYMPTOM: Any GCR tape save operation fills the / (root) partition and all system activity is interrupted (normally there are messages stating that the root partition is full). dfspace shows no space in the root partition. PROBLEM DETERMINATION: List tape device files: ls -l /dev/rmt 1/2" tape device files are: /dev/rmt/tg0 - standard 1/2" /dev/rmt/tg0n - standard 1/2", no rewind /dev/rmt/tg0h - high density (6250) /dev/rmt/tg0hn - high density (6250) and no rewind /dev/rmt/tg0m - medium density (1600) /dev/rmt/tg0mn - medium density (1600) and no rewind The device files are 0 block length files which have a 'b' or 'c' in the first column of the mode field. Any file in the /dev/rmt listing with a '-' as a first character in this field is a data file which has been created accidentally while attempting to save files to the tape. FIX: Delete any accidentally created data files in the /dev/rmt directory. This should free up the root directory and allow normal system activity again. If the files listed above are missing, the system failed to recognize the tape drive during the last boot process. This will occur if the GCR is not powered up at boot time or if cables are disconnected, etc. Verify cable connections, power the tape drive on, and re-boot the system. The 1/2" tape device files will be re-created during boot if the system recognizes the tape drive. If the files are still missing verify the tape MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB019 Pg001 subsystem with DEMON. ORIGINATOR: N. Jones MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB019 Pg002 FIB 00020 08/23/90 *** SCSI GCR DRIVE REQUIRES TERMINATOR FOR SELF-TEST *** SYMPTOM: After installation, conversion, or other assembly/dis-assembly: Power-On Self-Test seems to terminate immediately or does not start. Operator Panel may be totally or partially inoperative. ENTER DIAG switch does nothing. Drive may or may not go ON-LINE. PROBLEM DETERMINATION: GCR drive with Differential SCSI interface. Terminator is missing or installed incorrectly. If CP (Cache) PCBA is removed, Self-Test starts normally, but gives Error Code CC7 (Cache Memory Status not as expected) or other Cache-communication failure. FIX: Install Differential SCSI Terminator (P/N 400652-154/MM640121) on the Backplane at location A4. The Terminator should be supplied with all drives or conversion kits. ORIGINATOR: J. VanderHeyden MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB020 Pg001 FIB 00021 04/28/94 *** Switch settings for two versions of the CS (scsi) card *** There are now two versions of the CS (scsi) interface card, one with two switches and one version with three switches. the switch settings are: TWO SWITCH VERSION NORMAL SWITCH SETTING DESCRIPTION SW1 (MH11) -1 ON SCSI ID (BIN 1) Set for SCSI ID 5 -2 OFF SCSI ID (BIN 2) -3 ON SCSI ID (BIN 4) -4 OFF Bus Parity Checking (Enable) -5 OFF Max Sense Data (116 bytes) -6 OFF Time Outs (Disable) -7 ON EOM Status on Read (not reported) -8 OFF GCR Write 1 TRK ERR (Corrected) -9 OFF Write Threshold (3/4 Buff Size) -10 OFF Write Threshold (3/4) Buff Size) SW2 (MM07) -1 OFF Write retries (= 15) -2 OFF Write Retries -3 ON Read Retries (= 0) -4 ON Read Retries -5 OFF Tape Mark Sync (= 2 FM) -6 OFF Early EOT Allow (= 1 Rec.) -7 ON Tape Retries (Not Reported) -8 ON Read Ahead (Allow) -9 OFF Read Threshold (3/4 BUFF Size) -10 OFF Read Threshold THREE SWITCH VERSION NORMAL SWITCH SETTING DESCRIPTION SW1 (RD86) -1 ON SCSI ID (BIN 1) Set for SCSI ID 5 -2 OFF SCSI ID (BIN 2) -3 ON SCSI ID (BIN 4) -4 OFF Bus Parity Checking (Enable) -5 OFF Max Sense Data (116 bytes) -6 OFF Time Outs (Disable) -7 ON EOM Status on Read (not reported) -8 OFF GCR Write 1 TRK ERR (Corrected) -9 OFF Write Threshold (3/4 Buff Size) -10 OFF Write Threshold (3/4) Buff Size) SW2 (RD75) -1 OFF Write retries (= 15) -2 OFF Write Retries -3 ON Read Retries (= 0) -4 ON Read Retries -5 OFF Tape Mark Sync (= 2 FM) -6 OFF Early EOT Allow (= 1 Rec.) -7 ON Tape Retries (Not Reported) -8 ON Read Ahead (Allow) -9 OFF Read Threshold (3/4 BUFF Size) -10 OFF Read Threshold MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB021 Pg001 SW3 (RD61) - ALL POSITIONS OFF JUMPER LOCATIONS AND SETTINGS 90 34 30 26 KL o o o o o o o o AK KK o--o o--o o o AJ o--o o--o AH o--o o--o AG ORIGINATOR: Norm Jones MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB021 Pg002 FIB 00022 04/16/91 *** GPx 70 MT-4405 GCR SCSI *** D.Luque PRELIMINARY 'FIELD BULLETIN' #nnn DATE 4/12/91 SUBJECT: GPx SERIES 70 MT-4405 GCR SCSI TYPE: Informational/Problem PURPOSE: To inform the field of an incorrect switch setting in the 'GPx Series 70 Installation and Maintenance Manual -M8226B-' that pertains to the MT-4405 GCR, SCSI. SYMPTOM: Unknown. CAUSE: Manual 'M8226B' gives the wrong switch setting for switch A position 4; page 2-77, figure 2-45. SOLUTION: Make a pencil/ink change to the manual and check installed MT-4405 GCR tape units for correct switch setting. Bus Parity Checking Switch A-4 (MH11) WAS: OFF / IS: ON ORIGINATOR: D. luLUQUE MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB022 Pg001 FIB 00023 06/21/91 *** CC7 Errs at EOT, fails to write LEOT - caused by Write Protect *** SYMPTOM: CC7 errors at end of tape, drive fails to write logical EOT. PROBLEM DETERMINATION: The tape drive may also appear to NOT go into non-streaming mode near the end of the tape. On the MPx/ASx systems, NEWX test 5 EOT test can be used to observe proper early EOT detection. The drive should run in streaming mode until about 1/2" of tape is left on the supply reel, then the drive should drop into non-streaming mode (looks like start/stop motion). FIX: Replace the file protect sensor. NOTE: This problem is related to the problem described in FIB11 also caused by the file protect sensor, it caused early EOT to be detected too soon, this problem is early EOT not detected at all. The drive is designed to be in non-buffered mode at end of tape, the early EOT detection (sensed by pulses from the file protect sensor) allows the drive to run in buffered mode to a point near the end of tape then drop into non-buffered mode for end of tape handling. ORIGINATOR: Norm Jones Don Luque MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB023 Pg001 FIB 00024 10/18/91 *** GCR Sensor Outputs and Troubleshooting Tips *** ************** PRELIMINARY FIELD BULLETIN ******************** TAPE DRIVE MT-4405 GCR DON LUQUE DATE: 10/01/91 # x1 TROUBLESHOOTING TIPS TYPE: Informational PURPOSE: Provide information to help troubleshoot the GCR tape drive and eliminate excessive part replacements. There are three sensors that will be explained in this Field Bulletin that are used for tape movement during the 'load' cycle and when writing data to tape. This Field Bulletin can be used with the 'Pertec' or 'SCSI' interface GCR. The three sensor's that will be described are: 1) Upper/Lower Swing Arm Motion Tach 2) File Protect Sensor 3) Capstan Tach 1) UPPER/LOWER SWING ARM MOTION TACH: (1F1) At Power On, the swing arm's travel though there arc; first driven to their extended position and then returned to the retract position. During the retract motion, proper phasing of the motion tach's are checked. A SW count representing the distance travelled is expected to match that detected by the position counters of the SV servo card. The motion tach's are located under the GCR base plate, mounted on the swing arm assemblies, with a plastic cover over it. The motion tach's can be tested using the GCR Diagnostic programs. (Swing arm springs, retractor motor and logics are assumed good.) - With power OFF, unplug J17 to the swing arm retractor motor. - Rotate the GCR base plate up to gain access to the retractor connecting rod. Turn power ON to the GCR, an error of 1F1 will occur due to J17 being unplugged. Push the retractor connecting rod down so the swing arms are in their 'extended' position (under spring load). - Rotate the GCR down and open the plastic 'threading cover' assy to gain access to the swing arms. On the diagnostic key pad, press the key to clear the 1F1 error. Now press the key, enter <6061> then . The LED display should display a two-digit hex character. With 'clean' hands, rotate the swing arms (one at a time) though their arc. The LED display should change three times; at the TOP, at the BOTTOM, and just below the fixed roller post. The hex number that is displayed is of no concern, our concern is that the number DOES change. DO NOT let the swing arms slip free and drop to the bottom under spring tension. This can damage the arms by changing the alignment. Reference the MT-4405 TAPE DRIVE SERVICE MANUAL -M8140- section 7 (Removal and Replacement) and section 8 (Diagnostic/Maint Programs). MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB024 Pg001 2) FILE PROTECT SENSOR: (CCF) The GCR tape drive will always operate with a built-in cache buffer. MAI settings use a 32KByte cache buffer size. When writing records in buffered mode, if a series of write records are received from the host at a fast enough rate, there will be multiple records in the cache. During large backup jobs, the cache buffer will make the GCR operation appear to be in a streaming mode. When data is written to tape, a read-after-write is performed. As the write operation approaches the End-Of-Tape (EOT), the amount of write data allowed in the cache buffer memory is reduced to 'one record in, one record out'; this is known as Early EOT. When writing data to tape under this condition, the GCR tape movement appears as a start/stop mode (one record in/one record out). This condition is invoked by the 'revolutions' of the file reel (aka supply reel). As the density of tape on the file reel get less and less, the revolutions of the file reel goes faster and faster. The 'write protect sensor', under the file reel, (under GCR base plate) provides pulses from the hub that corresponds to the revolutions. A predetermined pulse rate from the write protect sensor will cause the GCR to go into Early EOT during the write operation. - The file reel write protect sensor can be scoped out by looking at card A4 (WR PCB), row D1 pin-21. Without any reel motion and a write ring installed, a sawtooth waveform will be displayed with a scope setting of 50us (display A); with a scope setting of 20ms the waveform will look like an envelope. As the hub rotates, the envelope will have a negative pulse (display B). As the file reel rotates faster, a second pulse will come into the display. As the pulse repetition rate reaches approximately 116ms, the GCR will go into Early EOT (display C). NEWX test #5 Physical EOT (High or Low), can be used to to check these conditions. When Early EOT is first reached (start/stop), there will be approximately 1/8-inch of tape density left on the file reel. The following displays are from card location A4, row D1 pin-21. /\ /\ /\ -- 3v Scope= 1.0v per cm. Display A / \ / \ / \ 50us sweep / \/ \/ \ __ 0v |<-->| -- 100us (stationary, not rotating) | |||||||||||||||| -- 3v Scope= 1.0v per cm. Display B | |||||||||||||||| __ 0.4v 20.0ms sweep |__| __ 0v trigger - (rotating with write ring) | ||||||||||||| ||| -- 3v Scope= 1.0v per cm. Display C | ||||||||||||| ||| __ 0.4v 20.0 ms sweep |_| |_| __ 0v trigger - |<----------->| -- 116ms (NEWX text #5 in EEOT) ___ ______ ___ ___|_._|____| A9 |__gnd ------- / |---|-)-|----| B9 |---------| C1-21|--- +15v | < ___|_)_|____| B8 |_________| D1-21|___ A4 D1-21 \ ___|___|_| | |_____| |______| Sensor |___| J3 A4 PCB P27 MTHBD WR CARD MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB024 Pg002 - Negative glitches within the 116ms repetition rate can cause the GCR to go into premature Early EOT. - If the GCR does not go into Early EOT when the hub pulses reach 116ms then check for a logic problem. 3) CAPSTAN TACH: (F98) The Capstan motor contains a tach. This tach provides phase 'A' and phase 'B' pulses that are 90-degrees out of phase so the GCR knows if it is in the forward or reverse direction. These pulses can be monitored at card location A1 (SERVO) row A pin-9 (phase A) and row B pin-9 (phase B). Using NEWX test #5 Physical EOT test (Hi or Low) or Maintenance Test 09 mode 3 and 6, the display should be as follows: . .----. .----. -- 5v Scope= 2.0v per cm. Phase A |40us|36us| | | 10us sweep |____| |____| |___ __ 0.4v trigger Phase A neg. |<--- 76us --->| |<--- 76us --->| --. .----. .----. -- 5v Phase B |38us|38us| | | |____| |____| | __ 0.4v NOTE: As you can see, Phase A pulse widths, of this GCR under test, are not exactly equal. A missing phase, missing pulses or one that is drastically out of a 90-degree ratio is of concern. Troubleshooting TIP's: - Become familiar with the Diagnostic and Maintenance programs and how to run them. - The GCR tape drive REQUIRES revision 'AD' of the BMTC to prevent hard tape errors from going to disk. - Try to get the customer to use new tapes when there is the possibility of UNKNOWN tape quality. - Check the File Protect Sensor for cleanliness. Clean the sensor face as one would do with a pair of glasses. May want to add this to the PM procedure checks. - The MAI switch settings for the GCR allow for 15 write retries. When testing the GCR for write errors (tape quality), change this value to Zero by changing CP card (A2) SW2 (KC47) positions 1 and 2 to ON (is OFF). This will help determine if there is a tape quality problem. When an error occurs (CCF), you can power off the GCR and check the tape quality for physical defects by opening the plastic threading cover and examining the tape within the column. If you choose to do this: 1) Insure that your hands are clean and avoid touching the recording side of the tape. 2) INSURE that you thread the tape correctly and the tape is between the collars on the 'rollers' prior to any tape movement (rewind). Failure to do so WILL DAMAGE THE TAPE ! INSURE to set the switch setting bact to the MAI default settings prior to returning the GCR to normal operation. MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB024 Pg003 - When a CCF error occurs, what other conditions exist. Is the swing arm tension lost ? If so, then the error is a HW error (swing arm tach's) and not a tape quality issue. PARTS: MM# PN OEM Swing Arm Motion Tach 640015 400652-115 402339403 Swing Arm Assy w/Tach Upper 640030 400652-130 402560106 Swing Arm Assy w/Tach Lower 640031 400652-131 402560206 File Protect Sensor 640017 400652-117 402637801 ORIGINATOR: Don Luque MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB024 Pg004 FIB 00025 12/27/91 *** Various Intermittant Problems *** SYMPTOM: Varied problems, probably intermittant. FIX: Tighten loose screws or standoffs on the capacitors behind the AK regulator PCBA in the power supply. Tighten screws and standoffs as follows: 1. tilt the GCR into the vertical position 2. remove cables from AK PCBA 3. remove screws securing the AK PCBA to the capacitors (via standoffs) 4. remove the AK PCBA 5. tighten ALL screws and standoffs on the capacitor assembly 6. reinstall the AK PCBA, BE SURE ALL SCREWS ARE INSTALLED AND ARE TIGHT NOTE: The loose hardware can cause voltage loss or ripple on any voltage therefore it can cause virtually any problem. ORIGINATOR: Norm Jones MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB025 Pg001 FIB 00026 04/07/92 *** Troubleshooting CCF Machine Checks *** CCF machine checks indicate that the tape drive has sent the system good status for a particular record (which was placed in the cache buffer), but during the process of writing the record to tape bad status was received from the tape transport. Since there is no way to indicate to the system which record really is in error (due to variable numbers of records held in the buffer at any time) the tape drive gives a CCF machine check. Also MAI does not handle the sense data from the tape drive which would help pinpoint the failure, making diagnosis difficult. CCF errors in most cases mean tape media problems (bad tape) or a problem with the tape transport which looks like tape media problems. Diagnosing CCF machine checks: 1. Observe the position of the swing arms while the GCR is in the check condition. If the tension is lost the problem is probably a transport hardware problem (sensor, motor, etc.) rather than a tape media type of problem. a. Check the sensor outputs. Refer to FIB 24. b. Run the internal diagnostic package (routine 10). 2. Run the internal diagnostic package (routine 10) repeatedly, this series of tests does a very good job of testing the PCBAs. If the internal diagnostics run properly and the tape drive fails on-line, the failure is probably in the Interface (IF card), cables, or host controller (BMTC, etc.) NOTE: There have been instances where multiple IF cards have been apparently blown during the process of troubleshooting and they exhibit this symptom; internal tests run fine, some on-line tests run, tape backups fail solidly. To prevent damage to the IF card, power the tape drive down and remove the AC line cord before plugging or unplugging an IF card. 3. Check for loose connections in the power supply. Refer to FIB 25 4. Clean the transport area thoroughly, particularly the tape guides. Remove the top flange of both tape guides by removing the center screw (leave the two outer screws tight, they hold the tape guides in position), clean the guides and observe for wear. NOTE: Excessive oxide build-up in the tape guides is probably a result of dirty/defective tape media. 5. Test the tape drive on-line in non-buffered mode, the tape drive should not go into a machine check if the problem is write errors. This can be changed on the Pertec interface drives (CP card). To change the drive to non-buffered mode change SW2 position 8 on the CP card to OPEN/OFF. Additionally the tape media can be observed if you change the default number of write retries from the MBF default of 15 to 0 by setting SW2 positions 1 and 2 to ON/CLOSED. o In this configuration, when an error occurs, the drive should remain in a. ready state with the questionable area of the tape positioned just past the read head. Remove power from the drive and inspect the tape, be sure MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB026 Pg001 not to contaminate or damage the tape while inspecting it. o Be sure to restore the CP card switches to normal before returning to the customer, the normal switch settings are listed below. NORMAL CP CARD SWITCH SETTINGS C = closed O = open SWITCH POSITIONS PCBA NAME SWITCH 1 2 3 4 5 6 7 8 9 10 --------- ------ - - - - - - - - - -- CP SW1 C C C C O O O O C C - DRIVE 0 O - DRIVE 1 CP SW2 O O C C C O C C C C ORIGINATOR: Norm Jones MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB026 Pg002 FIB 00027 MAI COMPANY CONFIDENTIAL 01/06/94 *** Machine Check F16 During Load Sequence *** SYMPTOM: Machine check with error F16 during load sequence and error 1F1 with status register A-6 = 16 (which references error F16) during test 1F. PROBLEM 1: PROBLEM DETERMINATION: Observe the position of the swing arms as they are positioned to the fully retracted state (lower swing arms contact the spring loaded threading diverter), see if the arms appear to bounce back after stopping in the retracted position. Open the threading cover and pull the threading diverter away from the swing arms and retry test 1F (use option 06 - loop test). If this action allows the swing arms to stay fully retracted without appearing to bounce back the spring tension on the threading diverter is too great. FIX: Gently stretch the threading diverter spring to reduce the tension against the swing arms when the swing arms are in the fully retracted position. PROBLEM 2: Tall cabinet models only. If the swing arm hits or scrapes the interlock switch bracket it may cause a similar symptom as described in PROBLEM 1. Check for clearance between the swing arm and the interlock switch bracket with the swing arm fully retracted, if there is no clearance shim the bracket out using flat washers. ORIGINATOR: Norm Jones MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB027 Pg001 FIB 00028 MAI COMPANY CONFIDENTIAL 08/10/92 *** FIRMWARE UPGRADE *** SUBJECT: MODEL 4405 TAPE DRIVES AUTHOR DATE NEW FIRMWARE RELEASED DALE JENSEN 08/92 TYPE: PROBLEM PURPOSE THIS FIELD BULLETIN IS INTENDED TO INFORM THE FIELD ABOUT NEW FIRMWARE THAT HAS. BEEN RELEASED FOR THE GCR, MODEL 4405 TAPE DRIVE. SYMPTOM PROBLEMS THAT HAVE BEEN SEEN WITH THE GCR AND HAVE BEEN ADDRESSED BY THE NEW FIRMWARE INCLUDE: RUNNING OFF THE END OF TAPE (BY UPDATING IF FIRMWARE) AND TAPE PROCESS HANGS (BY UPDATING CS FIRMWARE). THE PROCESS HANGS ARE MORE PREVALENT ON THE GPX 70 SYSTEMS BUT CAN ALSO BE A PROBLEM ON THE GPX 40. SOLUTION NEW FIRMWARE FOR THE IF PCBA, MAI PART NUMBER 400652- 103 (MM# 640003), HAS BEEN RELEASED. THE MAI PART NUMBER FOR THE NEW PROM KIT IS 400652-501 AND MM# 640137. ONCE THE NEW FIRMWARE IS INSTALLED, THE MM NUMBER FOR THE BOARD CHANGES TO MM# 640138. THE REWORK INSTRUCTIONS ARE AS FOLLOWS : o REMOVE IF PCBA FROM GCR UNIT. o REMOVE EPROMS PA57, 65, 73, 81 & 89 FROM PCBA o INSTALL NEW EPROMS PA57 THROUGH PA89 INTO THEIR RESPECTIVE LOCATIONS. KIT (P/N 400652-501, MM# 640137) o RE-IDENTIFY ASSEMBLY AS 403923312, MM# 640138. o RE-INSTALL PCBA AND TEST THE GCR UNIT. NEW FIRMWARE FOR THE CS-D PCBA, MAI PART NUMBER 400652-153 (MM# 640120), HAS ALSO BEEN RELEASED. THE MAI PART NUMBER FOR THE NEW PROM UPGRADE IS 165075-001 AND MM# 640139. THE LABEL FOR THIS FIRMWARE IS CS:665C - 9231. THE REWORK INSTRUCTIONS ARE AS FOLLOWS : o REMOVE CS-D PCBA FROM GCR UNIT. o REMOVE EPROM AT LOCATION MK48 AND REPLACE WITH MAI PART NUMBER 165075-001, MM# 640139. o RE-IDENTIFY ASSEMBLY AS "404039212", MM# 640135. o RE-INSTALL PCBA AND TEST THE GCR UNIT. IT IS RECOMMENDED THAT THE FIRMWARE UPDATES BE DONE ON ALL GCR'S EXPERIENCING THESE PROBLEMS. THE IF PCBA FIRMWARE UPDATE MUST BE DONE ON ALL GCRS (SCSI AND PERTEC INTERFACE) IN THE FIELD ON ALL SYSTEM TYPES. ONLY GCRS ON GPX 40/70 SERIES SYSTEMS WILL HAVE THE 400652-153 CS-D PCBA THAT WILL REQUIRE THE 165075-001 FIRMWARE UPDATE IN ADDITION TO THE IF PCBA FIRMWARE UPDATE. THIS FIRMWARE IS NOW AVAILABLE. RELATED DOCUMENTATION A NEW ECN, NUMBER 15426, HAS BEEN ISSUED REGARDING THIS FIRMWARE UPDATE. MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB028 Pg001 ORIGINATOR: D JENSEN MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB028 Pg002 FIB 00029 MAI COMPANY CONFIDENTIAL 06/17/94 *** Installing single-ended SCSI version on an RPx7000 *** Subject : GCR tape drive on RPX 7000 Type : Informational Purpose : Inform the field on how to connect a GCR tape drive on a RPX 7000 The MAI GCR tape drive (must be a single ended SCSI tape drive) is now supported on the RPX 7000. The following is how to configure this tape drive on the RPX 7000 system : You must first set the SCSI address on the tape drive making sure that this address is not being used on the RPX 7000 (you can use lsdev -C to verify current SCSI addresses). As root run "smit" and select the following : DEVICES / TAPE DRIVE / ADD A TAPE DRIVE and select ost (SCSI Other SCSI Tape Drive), select parent adapter, select Connection Address (SCSI address for tape) and modify the following parameters : Parameter Value NOTES : BLOCK SIZE (0=variable length) [0] DENSITY setting #1 [3] Sets 6250 bpi DENSITY setting #2 [2] Sets 1600 bpi BLOCK SIZE for variable length support [0] Use Device Buffers during writes [yes] Use Extended file marks [yes] Enter 'cr' when done and this will define the tape drive. You can reboot the system and you will see that a new driver in the /dev/rmt* dirrectory has been created (or you can perform lsdev -C). Use this new driver for access to the tape drive. A marketing announcement will soon be released to document a market code to convert PERTEC GCR tape drives to SCSI single ended tape drives (preliminary market code is : DM213AA.) This FIB will be updated with part numbers and switch settings when they become available. ORIGINATOR: Joe Melendez MODIFIED by: Norm Jones MAGNETIC TAPE I/O-S.T.C.-2925-----------------------FIB029 Pg001