_ FCO RA81X-R012, Potential ECC errors on the RA81 ----------------------------------------------------------------------------| | _ _ _ _ _ _ _ | | | | | | | | | | Level of Page 1 | | |d|i|g|i|t|a|l| Urgency Of 14 | | |_|_|_|_|_|_|_| FCO [ R ] | |___________________________________________________________________________| | FIELD CHANGE ORDER Number: RA81X-R012 | |___________________________________________________________________________| | Applicability: | | Rework all RA81 Microprocessor modules: | | Etch Revision "B" CS Revision "K" or lower. | | Etch Revision "C1" CS Revision "L3" or lower. | |___________________________________________________________________________| | Problem/Symptoms: | | Potential ECC Errors on the RA81. | | | |___________________________________________________________________________| | Quick Check: | | See page 2 of this FCO. | |___________________________________________________________________________| | Compatibility/Prerequisite FCO: | Est. Time to Install | | None. | 1.5 Hours | |___________________________________________________|_______________________| | Special Tools or Test Equipment: | | Velostat Kit (Anti Static) Part Number 29-11762-00, | | Zero ohm Jumpers Part Number 90-09185-00. | |___________________________________________________________________________| | FCO Parts Information | |___________________________________________________________________________| | Order by | Contents | | FCO Kit # |____________________________________________________________| | | Quantity Part Number Description | | | | | FA-04649-01 | 1 FCO Document | | | | | | | | | | |______________|____________________________________________________________| | EQ Kit Variation/System-Option Applic: | |___________________________________________________________________________| | Approvals | |___________________________________________________________________________| | CSSE Engineer |F.S. Product Safety | F.S. Logistics | | Keith Brown | John Freudenberg | Ed Duggan | |________________________|_________________________|________________________| | Responsible CSSE Mgr |F.S. Microfiche Libraries| Affected Population | | Ron Milano | | 300 | |________________________| |_______________________ | | ESD&P Micropublishing | | Initial Kitting | | Barbara Eriss | | 0 | |________________________| |_______________________ | | Revision | | Hardcopy Publication | | A | | 1000 | |________________________| |________________________| | FCO Release Date | | Parts Availability | | 15 August 1985 | | September 1985 | +---------------------------------------------------------------------------+ _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 2 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ QUICK CHECK: This adjustment should only be performed on microprocessor modules with a etch Rev "C1", CS Rev "L3" or lower, and etch Rev "B", CS Rev "K" or lower. ******************************************************************************* * N O T E * * * * Microprocessor Modules with an Etch "B", CS "K1" or etch "C1", CS "M1" * * Revisions should not be adjusted. RA81's at hardware Revision 6 will have * * the "M1" or the "K2" microprocessor. * ******************************************************************************* The CS Revision marking is located in the upper left (component side) portion of the module. This marking will include a 2 or 3 digit data code and the CS Revision level, ie. 452l3 "l3" = CS Revision level. Refer to RA81 Tech Tip #21 Speed Bulletin #343, dated 7/30/84 or DSA "Right Stuff" issues 1 and 2 for assistance in locating Revision levels. Before or after performing this adjustment procedure, the Site Management Guide must be verified or updated to reflect this change. _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 3 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ To prepare for the implementation of this FCO, perform the following: --------------------------------------------------------------------- 1. Request the RA81 drive from the customer. 2. The RA81 drive must be dismounted and deselected. 3. Spin the drive down by pressing the RUN/STOP switch (See Figure 1). _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 4 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ 4. After the drive has stopped, turn the circuit breaker at the rear of the RA81 to the OFF position (See Figure 2). 5. Remove the AC line cord from the rear of the RA81 drive (See Figure 2). _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 5 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ 6. Open the Logic Access Cover lid by turning the allen head latch screw (See Figure 3). _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 6 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ 7. Fold out the Servo and Personality modules (See Figure 4). _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 7 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ 8. Disconnect all cables attached to the microprocessor module (See Figure 5). 9. Remove the microprocessor module from the logic chassis. _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 8 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ Microprocessor Data Separator Window Adjustment: ------------------------------------------------ 1. The jumpers are located on the microprocessor module (See Figure 6). _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 9 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ 2. For proper jumper position, locate W7, W8 and W9 (See Figure 7, p. 10). 3. Verify the current jumper selection: W7__ W8__ W9__ 4. Add or remove jumpers per table listed below using the jumper removal procedures which follow this table ******************************************************************** * N O T E * * * * The following settings are the only adjustments that can be * * made. If any other adjustments are performed, the data * * separator window will be out of tolerance. * * * ******************************************************************** CURRENT SETTING CHANGE RESULT W9,W8,W7 out Add W9 W9 in W9 in / W7,W8 out Add W8 W8 W9 in W8 in / W7,W9 out Add W7 and W9 remove W8 W7 W9 in W9 and W8 in / W7 out Add W7 remove W8 W7 W9 in _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 10 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 11 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ To remove the Jumpers, perform the following: -------------------------------------------- The jumpers are soldered in place. To prevent damage to the module, the old jumpers must be removed with extreme caution. The following steps are the easiest method for jumper removal. E.S.D. protection must be observed at all times. Use the velostat kit (anti-static) P/N 29-11762-00. After the microprocessor has been removed from the RA81, perform the following: 1. Using diagonal cutters, remove the excess lead of a previously removed jumper from the jumper eyelet on the component side of the module (See Figure 8, p. 12). 2. Add a small amount of solder to the component side of the jumper eyelet. 3. Straighten the jumper lead on the etch side (See Figure 9, p. 13). 4. Place the module upright (preferably between the knees while sitting). ****************************************************************** * !!!!!!! WARNING!!!!!!!!! * * * * Do not apply heat to module for extended period. Overheating * * will cause damage to the module and render it useless. * ****************************************************************** _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 12 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 13 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ _ _ _ _ _ _ _ | FCO RA81X-R-012 | | | | | | | | | |d|i|g|i|t|a|l| | PAGE 14 OF 14 |_|_|_|_|_|_|_| | | _______________________________|_________________________________________ 5. Grasp the jumper lead with needle nose pliers or side cutters. Heat the component side with a soldering iron and pull the jumper lead out of the plated feed through (PFT) hole. Do not force the removal. 6. Add a small amount of solder to the jumper PFT hole. 7. Set the module upright, place a solder sucker on the etch side of the jumper PFT hole. Apply iron to the solder tap on the component side of the PFT hole. 8. Engage the solder sucker. Ensure that all the solder is removed. If not, perform steps 6 and 7 again. 9. Solder in the required zero ohm jumper (P/N 90-09185-00 ) in the PFT hole. 10. Reinstall the microprocessor module into the drive. 11. Allow all internal drive diagnostics to run to completion by deselecting both port switches during spin up for five (5) minutes . 12. Run at least one pass of the following RA81 disk drive diagnostics: 16 BIT PDP-11 UDA50 CZUDC/CZUDI 32 BIT VAX-11 UDA50 EVRLA/EVRLG HSC50 ILEXER 36 BIT 10/20 HSC50 ILEXER 13. Return the RA81 disk drive to the Customer for software use. 14. Log FCO Activity in the customer's Site Management Guide. \^ RA81X \\RA81X \\BROWN \\1985 \\AUG \\FCO_DOCS