XEROX 29MB DISK CONSOLE SERVICE MANUAL NOVEMBER
Contents
1. XEROX OFFICE SYSTEMS DIVISION 29MB DISK CONSOLE SERVICE MANUAL gt NOVEMBER 1984 600P84228 PRINTED AT REVISION A 29MB DISK CONSOLE SERVICE MANUAL 600P84228 REVISION A NOVEMBER 1984 29MB DISK CONSOLE 600P84228 29MB DISK CONSOLE SERVICE MANUAL TABLE OF CONTENTS List of Illustrations v 3 7 VFO PWA se 3 15 3 8 Control PWA 3 15 3 9 Read Write 3 16 CHAPTER 1 GENERAL DATA 3 10 Damper Assembly 3 17 11 How to Use This Manual 1 2 1 2 Model ConfigurationS 1 2 CHAPTER 4 PARTS IDENTIFICATION 1 3 Call Management 1 2 14 Change Tag Index 1 2 PL4 1 29MB Console Mechanical Parts 4 2 PL4 2 Disk Drive Assembly 4 4 PL4 3 29MB Console Harnesses 4 6 CHAPTER2 INSTALLATION REMOVAL Refer to 8000 Series Reference Manual CHAPTERS DISPLAY QUALITY Refer to appropriate service manual CHAPTER 3 REPAIR DATA 31 Console Top Cover 3 2 CHAPTER 6 TROUBLESHOOTING 3 2 Console 3 2 33 29MB Disk 3 3 Introduction 6 2 3 3 1 Actuator LOCK 3 10 Level 2 Check Charts 6 3 332 Spindle Lock 3 12 6 01 29MB Disk Faults 6 3 34 29MB2. o TP2 28 23 TERMINATOR CHIP INSTALLED 14 SHORTING PLUG p o TP1 1932 1P7 BC 8765 9 1011 12 SC O 1234 TP17 TP16 TP26 0 am o S1 52 TP19 o o TP20 Sg 8010 051 Figure 3 3 Jumper Locations for 29MB Control PWA Version C 3 REPAIR DATA FIGURES 3 3 3 4 8010 052 Figure 3 4 Jumper Locations for 29MB Actuator PWA 3 5 3 REPAIR DATA 29MB DISK DRIVE FIGURE 3 5 29MB DISK CONSOLE 600P84228 0 3 6 TP8 TP11 NOTE 1 GRJUMPER PRESENT ONLY 8010 053 ON LATER VERSIONS OF VFO PWA 3 Figure 3 5 Jumper Locations for 29MB VFO PWA 2 REPLACE 29MB DISK DRIVE a Replace brackets onto new Disk Drive b Carefully install Disk Drive inside console Replace the four bolts securing the Disk Drive to frame d Remove spindle lock screw through the access hole in Drive Belt Cover e Connect power harness connector to J on Disk Drive Motor f Connect power harness connector to J3 on Actuator PWA g Connect signal harness connector to J1 on the Control PWA 3 REMOVE ACTUATOR LOCK 3 3 1 NOTE The 29MB Disk Drives have bad page error maps from the OEM supplier the Original Equipment Manufacturer of the drive and Xerox Refer to Figure 3 6 for a sample of the error map Refer to Figure 3 7 for a flow chart on preparing the drive for software 4 CHECK THE AVAILABILITY OF XE
3. PWA with Logic Probe 600T1580 Probe shows pulsing indication 6 05 RESTORE ERRORS 1 Enter the Isolation Tools Select Step Pulses Frequency 1000 Outward When test stops Logic Probe 60011580 shows a high indication heads at track 00 2 Measure Actuator PWA with Logic Probe 600711580 Probe shows a high indication PWA 143 8 Actuator PWA J10 1 Figure 6 3 Actuator PWA TP3 Figure 6 3 29MB DISK CONSOLE 600P84228 INDICATION CORRECT INCORRECT Replace HSIO PWA Replace 29MB Signal Cable Step 2 Check Chart 6 6 Replace in order Control PWA Actuator PWA HSIO PWA If problem still exists call for assistance Replace Actuator PWA If problem still exists call for assistance 29M8 DISK CONSOLE 600P84228 STEP PROCEDURE 6 06 SEEK ERRORS 1 Enter the Isolation Tools Select Step Pulses Frequency 1000 inward Measure Actuator PWA with Logic Probe 60071580 Probe shows high indication pulsing low Verify that heads are moving Repeat Step 1 selecting Outward if necessary Original MP code was 1713 Measure the Control PWA with Logic Probe 60011580 Probe shows pulsing indication TEST POINT Actuator PWA TP5 Figure 6 3 Visual Visual Control PWA 11 26 Figure 6 1 or 6 2 CORRECT Step 2 Step 3 Replace in order Control PWA Actuator PWA HSIO PWA C A Harness 6 TROUBLESHOOTING CHECK CHART 6 06 INDICATION INCORRECT Step 4 Rep
4. W20 29MB Power Cable W21 29MB Signal Cable 29MB DISK CONSOLE 600P84228 7 3 PLUG JACK LOCATIONS Refer to Figure 7 1 for illustration of plug jack locations and identification 7 4 WIRING DATA Refer to Figures 7 2 and 7 3 for illustrations of the wiring data for each harness 7 5 CONNECTOR IDENTIFICATION Refer to Figures 7 4 to 7 8 inclusive for pin location diagrams for various types of connectors used on harnesses The diagrams show pin side view of connectors 29MB DISK CONSOLE 600P84228 PWA J3 w20 P2 FAN W20 PI EI W2I PI EI Figure 7 1 29MB Disk Console Plug Jack Locations W20 J3 ACTUATOR W20 J4 MOT J4 W21 JI CONTROL PWA JI W21I PI WI4 J2 PROCESSOR W20 PI WI4 JI PROCESSOR 8000 085 7 PLUG JACK LIST PLUG JACK LOCATIONS WIRING DATA W20 PROCESSOR ACTUATOR PWA DISK DRIVE MOTOR GNO J4 33 i i 4 i 115 4 10 3 ARE DER 10 115 VAC FAN P2 ACN 1 2 8010 038 Figure 7 2 29MB Power Cable 20 7 3 7 PLUG JACK LIST 29MB DISK CONSOLE WIRING DATA W21 600P84228 CONTROL PWA PROCESSOR CONNECTOR CONTROL PWA Cont PROCESSOR CONNECTOR EDGE CO en PANEL EDGE 5 PANEL Cont LG CONNECTOR 2 Cont sed 26 p 26 E 32 T r 32 33 17 33 4 35 18 35 36 36 37
5. 19 37 39 20 m 39 ZIP DWN 7 4 Figure 7 3 29MB Signal Cable W21 29MB DISK CONSOLE 600P84228 000 8010 040 Figure 7 4 Connector Type B 00 8010 041 Figure 7 5 Connector D 7 PLUG JACK LIST CONNECTOR IDENTIFICATION TYPES B C H Figure 7 6 Connector Type H 8010 042 7 PLUG JACK LIST CONNECTOR IDENTIFICATION TYPESR S 8010 043 Figure 7 7 Connector Type R 8010 044 7 6 Figure 7 8 Connector Type S 29MB DISK CONSOLE 600P84228 29MB DISK CONSOLE 8 PRINCIPLES OF OPERATION 600P84228 CHAPTER 8 PRINCIPLES OF OPERATION 29MB DISK CONOSLE SERVICE MANUAL REFER TO 8000 SERIES REFERENCE MANUAL Use this Comment Sheetto assist in identifi cation of errors or needed improve ments in this manual For specific errors include specific page number in the report Detach Comment Sheet and mail the card to the printed address on the reverse side 29MB Disk Console Service Manual 600P84228 Nov 1984 Rev A Job Title Employee No Mailing Address Page Fig No Description of Error or Improvement receive an answer mark this area Include name and mailing address above BUSINESS REPLY MAIL FIRST CLASS Permit No 229 EI Segundo California POSTAGE WILL BE PAID BY ADDRESSEE XEROX CORPORATION OS Service Education 701 S Aviation Blvd MSN107 El Segundo Ca
6. 2 Perform the Level 1 Checkout procedure 3 Perform any Level 2 Check Chart procedures indicated by Level 1 Checkout 4 USO only If necessary ask for assistance from the Region Engineering Specialist RES or the Network Support Center NSC 5 RXonly If necessary ask for assistance from the Technical Specialist Information obtained during fault isolation in the 8000 Processor Service Manual may refer you to this manual or other manuals Use the appropriate amount of time determined by the local Branch Manager to troubleshoot a problem Then if a correction cannot be made ask for assistance 6 2 29MB DISK CONSOLE 600P84228 29MB DISK CONSOLE 6 TROUBLESHOOTING 600P84228 CHECK CHART 6 01 TEST INDICATION STEP PROCEDURE POINT CORRECT INCORRECT 6 01 29MB DISK FAULTS 1 Lower the VFO PWA The following voltages at Control PWA J6 the Control PWA are within tolerance Figure 6 1 a 52V Pin Step Ib Step 2 b 5 2V Pin E Step Ic Step 2 CAUTION When checking the 24V at Pin 22 switch OFF power and connect E Z hook meter lead to Pin 22 lead on the Control PWA Figure 6 1 Switch ON power 24V Pin 22 Step 1d Step 2 d 12V PinB Check Chart 6 02 Step 2 VOLTAGE TOLERANCES Xerox 6001860 Digital Meter 4 8 105 6 5 02 105 38 4 8 0 5 6 5 02 to 5 38 11 0 to 13 0 11 4 to 12 6 11 0 to 13 0 11 4 to 12 6 22 0 to26 0 22 8 to 25 2 6 3 6 TROUBLESHOOTING 29MB DISK CONSOLE F
7. RUN DISK EXERCISER FOR 10 PASSES TO DETERMINE THE CONDITION OF THE HARDWARE a Refer to the 8000 NS Diagnostics Handbook on how to run Disk Exerciser b if an error is detected other than a Header CRC Label CRC or Data CRC perform Level 1 Checkout in the 8000 Processor Service Manual 3 7 3 REPAIR DATA FIGURE 3 7 Bad Pages Media an to Enter Later Manually Enter Bad Pages From OEM Map and Run New Disk Checkout 10 passes Are Detected With Record and Save From Media Scan RR RO TID SS IER ET Xerox Error Map Date o on n Xerox E Error Map s 20629 r Bergie ALAG Indicates Physical Volume Needs Converting Manually Enter Bad Pages Figure 3 7 Rigid Disk Drive or Processor Software Preparation Flow Chart e Run Disk Exerciser ud e Run Destructive Scan Format Disk Drive Restoring 29MB DISK CONSOLE 600P84228 asses passes Bad page Are Detected With Destructive Scan Record and Save to Enter Later Old Bad Page Table 4 Bad Pages On Xerox Map and ones from i Destructive Scan Are 4 In Bad Page Table 8010 047 2 29MB DISK CONSOLE 600P84228 If no error is detected or the error is a Header CRC Label CRC or Data CRC continue with step 8 8 RUN DESTRUCTIVE SCAN FOR 2 PASSES W
8. 3 1 3 2 and 3 3 and install jumpers as shown b Remove any jumpers not shown in figures Add any jumpers necessary as shown in figures 2 REPLACE CONTROL PWA a Perform removal procedure in reverse order 3 SWITCH ON SYSTEM POWER 4 RUN ALAG 39 READ WRITEPWA REF PL4 2 REMOVAL FIGURE 3 9 1 REMOVE CONTROL PWA 3 8 2 REMOVE DAMPER ASSEMBLY COVER 3 REMOVE READ WRITE PWA 3 16 29MB DISK CONSOLE 600P84228 a Remove the two screws on left side of Read Write PWA b Remove the six screws from center of Read Write PWA CAUTION Do not pull head cables through seal This will reduce slack inside the Disk Drive and prevent arms from moving properly c Carefully pull Read Write PWA away from casting enough to reach behind PWA and disconnect cables d Disconnect cables from component side of Read Write PWA 7 lf rubber gasket adheres to Read Write PWA remove and replace around hole in casting REPLACEMENT FIGURE 3 10 NOTE Cables are sequentially marked P20 is at bottom and P28 is at top 1 REPLACE READ WRITE PWA a Ensure that rubber gasket is properly attached around hole in casting b Carefully connect head cables on new PWA Figure 3 10 c Push PWA against casting ensuring that the wires are not caught between PWA and casting e Replace the eight screws securing the Read Write PWA to casting 29MB DISK CONSOLE 600P84228 COMPONENT SIDE 328 P28 6 000000 1 323
9. DISK CONSOLE 600P84228 TEST STEP PROCEDURE POINT Control PWA 31 30 Figure 6 1 or 6 2 4 Measure the Control PWA with Logic Probe 60011580 Probe shows a low indication 5 Disconnect P1 from Processor Connector Panel J2 and J1 from the Control PWA 29MB Signal Cable has continuity 29MB Signal Cable P1 34 to J1 U 6 Disconnect J43 from HSIO PWA 29MB Interface Harness has continuity 29MB Interface Har ness J2 34 to 143 44 6 04 TRACK SEEK INCOMPLETE Control PWA SC Jumper Figure 6 1 or 6 2 Enter the Isolation Tools Select Step Pulses Frequency 1000 inward Measure SC Jumper the Control PWA with Logic Probe 60071580 Probe shows pulsing indication NOTE Test selected in Step 1 should still be running while performing Step 2 Control PWA C Jumper Figure 6 1 or 6 2 2 Measure C Jumper on the Control PWA with Logic Probe 60011580 Probe shows pulsing indication 6 TROUBLESHOOTING CHECK CHARTS 6 03 1 6 04 INDICATION CORRECT INCORRECT Replace HSIO PWA Step 5 Step 6 Replace 29MB Signal Replace Control PWA Step 2 Step 3 Cable Check 29MB Interface Harness connector for loose pins replace bad harness Replace in order Actuator PWA C A Harness Control PWA HSIO PWA Replace Actuator PWA 6 13 6 TROUBLESHOOTING CHECK CHARTS 6 04 6 05 STEP PROCEDURE TEST POINT NOTE Test selected in Step 1 should still be running while performing Step 3 3 Measure
10. Drive Belt 3 13 6 02 Disk MP Fault Code 6 8 3 5 29MB Drive 3 13 6 02 1 Disk Not Ready 6 9 36 Actuator 3 15 6 02 2 No Motor 6 10 29MB DISK CONSOLE 600P84228 TABLE OF CONTENTS Continued 6 02 3 No Drive Select 6 10 CHAPTER8 PRINCIPLES OF OPERATION 6 02 4 Mechanical Isolation 6 11 6 02 5 Logic Not Ready 6 11 Refer to 8000 Series Reference Manual 6 03 Logic Fault uy e X I EE RR 6 12 6 03 1 6 12 6 04 Track Seek Incomplete 6 13 6 05 Restore 6 14 6 06 Seek Errors 6 14 6 07 Write EITOIS sn ee 6 16 6 08 Cooling Fan m 6 16 6 09 Rigid Disk Drive Loading 6 16 Block Schematic Diagrams Chain 1 1 29MB Disk Console Power Distribution 6 19 CHAPTER7 PLUG JACK LIST 71 Introduction 7 2 7 2 Harness Identification 7 2 7 3 Plug Jack Locations 7 2 74 Wiring Data 7 2 7 5 Connector Identification 7 2 29MB DISK CONSOLE 600P84228 29MB DISK CONSOLE SERVICE MANUAL LIST OF ILLUSTRATIONS Figure Page Figure Jumper Locations for 23MB Control P
11. Drive Belt Control PWA HSIO PWA 6 02 5 LOGIC NOT READY NOTE Lower the VFO PWA to access the Control PWA Place two sheets of paper under VFO PWA to prevent an electrical short from PWA to disk console frame 1 Measure the Control PWA with Logic Probe Control PWA TP 8 Replace in order Replace Control PWA 60071580 Probe shows a high indication Figure 6 1 or 6 2 R W PWA Control PWA If problem still exists call for assistance 6 11 6 TROUBLESHOOTING 29MB DISK CONSOLE CHECK CHARTS 6 03 60 3 1 600P84228 TEST INDICATION STEP PROCEDURE POINT CORRECT INCORRECT 6 03 LOGIC FAULT 1 Measure the Control PWA with Logic Probe Control PWA TP 21 Check Chart 6 03 1 Replace in order 600T 1580 Probe shows a high indication Figure 6 1 or 6 2 R W PWA Control PWA If problem still exists call for assistance 6 03 1 CONTROL FAULT 1 Run Fault Analysis After an MP Code is displayed Control PWA TP 22 Step 2 Replace in order Logic Probe 600T 1980 shows a low indication Figure 6 1 or 6 2 R W PWA Control PWA If problem still exists call for assistance 2 Measure the Control PWA with Logic Probe ControlPWATP12 Step3 Check Chart 6 02 1 600T1580 Probe shows a high indication Figure 6 1 or 6 2 3 Measure the Control PWA with Logic Probe Control PWA TP 13 Step 4 Replace in order 60011580 Probe shows a low indication Figure 6 1 or 6 2 R W PWA Control PWA If problem still exists call for assistance 29MB
12. VAC 6 02 3 NO DRIVE SELECT 1 Press STOP on 8010 Workstation or BREAK on Server Terminal Select Drive Select Dynamic Frequency 1000 Measure HSIO PWA with Logic Probe 60011580 Probe indicates pulses 2 Disconnect P1 from Processor Connector Panel J2 and J1 from the Control PWA 29MB Signal Cable has continuity 3 Disconnect J43 from HSIO PWA 29MB Interface Harness has continuity TEST POINT 29MB Interface Har ness J2 12 to J43 22 Drive Motor J4 1 to 3 HSIO PWA 143 26 29MB Signal Cable J1 J to P1 16 29MB Interface Har ness J2 16 to J43 26 29MB DISK CONSOLE 600P84228 INDICATION CORRECT INCORRECT Replace in order Replace 29MB Interface Control PWA Harness HSIO PWA Replace Drive Motor Step 2 Step 3 Replace in order Control PWA HSIO PWA Check the 29MB Power Cable replace bad cable Replace HSIO PWA Replace 29MB Signal Cable Check 29MB Interface Harness connector for loose pins replace bad harness 29MB DISK CONSOLE 6 TROUBLESHOOTING 600P84228 CHECK CHARTS 6 02 4 6 02 5 TEST INDICATION STEP PROCEDURE POINT CORRECT INCORRECT 6 024 MECHANICAL ISOLATION 1 Verify that Spindle Lock Screw and Actuator Lock Visual Step2 Remove Lock Screw and are removed Actuator Lock Proce dures 3 3 1 and 3 3 2 2 Verify that pulley is correctly installed Visual Step 3 Tighten or replace pulley 3 Verify that Drive Belt is correctly installed Visual Replace in order install
13. a Ensure that there are insulating washers glued to motor mounts or motor b Support the motor while threading the capacitor relay and power connector J4 through hole in casting c Install the four screws and four insulating washers but do not tighten CAUTION Do not apply too much torque to screws or the insulating washers will split d Attach ohm meter leads to casting and motor e Tighten the four screws and observe meter to ensure that motor does not touch casting f Remove meter leads from motor and casting g Position relay and replace the two screws securing it to the casting h Install capacitor into bracket i Install Drive Motor connector 34 into bracket REMOVE SPINDLE LOCK SCREW AND PLACE IN STORAGE REPLACE DRIVE BELT 3 4 CONNECT POWER HARNESS CONNECTOR TO DRIVE MOTOR CONNECTOR J4 REMOVE ACTUATOR LOCK 3 3 1 o nauw 29MB DISK CONSOLE 600P84228 7 RUN ALAG 8 REPLACE BOTH SIDE COVERS 3 6 ACTUATOR PWA REF PL 4 2 REMOVAL FIGURE 3 9 1 SWITCH OFF SYSTEM POWER 2 REMOVE LEFT SIDE COVER 3 REMOVE DRIVE BELT COVER CAUTION Do not cause any disk movement by moving the drive belt 4 REMOVE ACTUATOR PWA a Remove 18 connector from Actuator PWA b Remove power harness connector from Actuator PWA 13 Remove the four screws securing PWA to casting d Move PWA slightly to left and disconnect P9 and P10 from PWA e Remove Actuator PWA REPLACEMENT FIGURE 3 4 1 INSTA
14. 07 g None of the above See MP Code List in Pro cessor Service Manual 6 8 29MB DISK CONSOLE 600P84228 STEP PROCEDURE 6 02 1 DISK NOT READY 1 Drive Motor is running 2 Disk is spinning NOTE Use Logic Probe 60011580 for all measurements 3 Verify that DS jumper is in the correct location at DS1 then logon using xerox and cixcos for name and password Enter the Isolation Tools Select Drive Select Dynamic Frequency 1000 Logic Probe indicates pulses TEST POINT Visual Visual Control PWA DS Jumper Figure 6 1 or 6 2 NOTE Test selected in Step 3 should still be running while performing Step 4 4 Measure the Control PWA jumper RY Probe indi cates pulses 5 Measure HSIO PWA Probe indicates pulses 6 Disconnect P1 from Processor Connector Panel J2 and J1 from the Control PWA 29MB Signal Cable has continuity Control PWA RY Jumper Figure 6 1 or 6 2 HSIO PWA J43 22 29MB Signal Cable J1 FtoP1 12 6 TROUBLESHOOTING CHECK CHART 6 02 1 INDICATION CORRECT INCORRECT Step2 Check Chart 6 02 2 Step 3 Check Chart 6 02 4 Step 4 Check Chart 6 02 3 Step 5 Check Chart 6 02 5 Replace HSIO PWA Step6 Step 7 Replace 29MB Signal Cable 6 9 6 TROUBLESHOOTING CHECK CHARTS 6 02 1 6 02 2 6 02 3 STEP PROCEDURE 7 Disconnect 143 from HSIO PWA 29MB Interface Harness has continuity 6 02 2 NO MOTOR DRIVE Voltage at Drive Motor is as follows USO 103to 127 VAC RX 193 to 264
15. A 4 REPLACE LEFT SIDE COVER REPLACEMENT Figure 3 8 NOTE Some 29MB Disk Drives are not equipped with Actuator Locks Do not perform procedure if drive is without Actuator Lock feature See PL 4 2 for Actuator Lock part number 1 SWITCH OFF SYSTEM POWER REMOVE BOTH SIDE COVERS 3 INSTALL ACTUATOR LOCK FIGURE 3 8 a Disconnect power harness connector from J3 on Actuator PWA b Switch ON system power CAUTION Do not meve Damper Assembly until disk speed has been reached approximately five seconds after AC power is applied Movement of heads without disk rotation may cause disk or head damage Wait for disk to reach proper speed d Remove damper cover 3 REPAIR DATA ACTUATOR LOCK FIGURE 3 8 DAMPER COLLAR DAMPER STAR ACTUATOR LOCK 8010 055 Figure 3 8 Actuator Lock installation 3 11 3 REPAIR DATA 29MB DISK CONSOLE ACTUATORLOCK SPINDLELOCK FIGURE 3 9 600P84228 e Rotate damper clockwise and observe that actuator arm moves on disk BELT COVER SPINDLE LOCK Wait for arm to stop g Install Actuator Lock between damper and star h Rotate damper clockwise until lock snaps into position on damper collar Replace damper cover j Switch OFF system power k Connect power harness connector to J3 on Actuator PWA 4 REPLACE BOTH SIDE COVERS 3 3 2 SPINDLE LOCK REF PL 4 2 REMOVAL FIGURE 3 9 1 REMOVE LEFT SIDE COVER 2 REMOVE SPINDLE LOCK a Remove spindle lock screw throug
16. IGURE 6 1 600P84228 SC BC 1228 o E Oa os TP8 TP9 46 o PE CHIP INSTALLED 48 n 2m20v0 lt 0n N x amp CcCuwsugzrxczmmooe Sa gone SHORTING PLUG lt Hs 15115 SRF o TP11 ogs 17 19 TP20 TP21 gt E TP18 TP22 Figure 6 1 Control PWA Version A 8010 014 29MB DISK CONSOLE 600P84228 mu 2 TP28 23 TERMINATOR CHIP INSTALLED amo DE TP14 SHORTING PLUG TP21 TP12 000 TP22 TP13 BC 8765 9 10 11 12 TP7 O oom OO mmm 9 TP17 TP16 TIS 0 TP26 O am 51 TP18 ma o TP11 TP20 Figure 6 2 Control PWA Version B 6 TROUBLESHOOTING C M p O N N T 5 D E FIGURE 6 2 N lt XS lt cCAV2VzZzzrX inmona gt od RD ad 8010 015 6 TROUBLESHOOTING 29MB DISK CONSOLE FIGURE 6 3 600P84228 Figure 6 3 Actuator PWA 8010 016 29MB DISK CONSOLE 600P84228 STEP PROCEDURE Disconnect C A ribbon Harness connector J8 from Actuator PWA All of the following voltages are within tolerance 5 2V 5 2V 5 2V 5 2V 5 2V 24V 24V 12V someor od All of the following voltages are within tolerance 52V b 5 2V 24V TEST POINT Actuator PWA J8 Figure 6 3 Pin8 Pin 10 Pin 12 Pin 14 Pin 16 Pin 19 Pin 20 Pin 18 Actuator PWA J3 Figure 6 3 Pin5 Pin4 Pin 1 6 TROUBLESHOOTING CHECK CHART 6 01 INDICATI
17. ITH 2 RETRIES a Refer to 8000 NS Diagnostics Handbook for detailed instructions b If bad pages are detected while Destructive Scan is running record and save to use later CAUTION When performing the next step RESTORE the Bad Page Table 9 FORMAT DISK DRIVE RESTORING OLD BAD PAGE TABLE a Refer to 8000 NS Diagnostics Handbook for detailed instructions 10 VERIFY BAD PAGE TABLE CONTAINS ALL PAGES ON XEROX ERROR MAP AND PAGES RECORDED DURING DESTRUCTIVE SCAN a Compare Bad Page Table on the display to Xerox error map and pages recorded during Destructive Scan b all pages are in the Bad Page Table proceed to step 16 11 MANUALLY ENTER BAD PAGES NOT IN BAD PAGE TABLE THEN PROCEED TO STEP 16 a Refer to 8000 NS Diagnostics Handbook for detailed instructions b After entering bad pages proceed to Step 16 12 RUNALAG AND VERIFY A SUCCESSFUL COMPLETION a If ALAG completes successfully proceed to step 13 3 REPAIR DATA 29MB DISK DRIVE b If ALAG fails while PV Scavenger is running continue with step 13 c If ALAG does not complete and an MP Code other than 1799 is displayed see MP Code List d If physical volume needs forward conversion Warnings is displayed on the screen proceed to step 13 CAUTION The following steps contain instructions that will destroy customer files DO NOT logon with Analyst privileges or perform these steps unless service manual procedures instruct you to do so Performing the
18. LL JUMPER ON ACTUATOR PWA a Refer to Figure 3 4 and install jumper as shown 2 REPLACE ACTUATOR PWA Perform removal procedure in reverse order 3 SWITCH ON SYSTEM POWER 4 RUN ALAG 3 REPAIR DATA ACTUATORPWA VFOPWA CONTROL PWA 3 7 VFO PWA REF PL 4 2 REMOVAL FIGURE 3 9 1 SWITCH OFF SYSTEM POWER 2 REMOVE LEFT SIDE COVER 3 REMOVE VFO PWA a Release clips securing corners of PWA and remove from mounting studs b Disconnect P2 and P3 connectors from VFO PWA REPLACEMENT FIGURE 3 5 1 INSTALL JUMPERS ON VFO PWA Refer to Figure 3 5 and install jumpers as shown 2 REPLACE VFO PWA a Perform removal procedure in reverse order 3 SWITCH ON SYSTEM POWER 4 RUNALAG 3 8 CONTROL PWA REF PL 4 2 REMOVAL FIGURE 3 9 1 REMOVE VFO PWA 3 7 2 REMOVE CONTROL PWA a Remove signal harness connector from J1 on Control PWA b Disconnect harness from J7 on Control PWA 3 15 3 REPAIR DATA CONTROL PWA READ WRITE PWA Remove the four screws securing the PWA to casting Move PWA to left and disconnect from Read Write PWA e If Control PWA is being replaced remove the two ribbon cables from PWA an REPLACEMENT FIGURES 3 1 3 2 3 3 CAUTION Jumpers on new Control PWA must be configured to match old Control PWA jumper locations BEFORE installation Several Control PWAs are now in use Ensure that the correct figure is referred to when verifying the jumper locations a Refer to figures
19. MOVAL FIGURE 3 9 1 SWITCH OFF SYSTEM POWER 2 REMOVE BOTH SIDE COVERS 3 INSTALL ACTUATOR LOCK 4 DISCONNECT POWER HARNESS CONNECTOR FROM J4 ON DRIVE MOTOR 5 REMOVE DRIVE BELT 3 4 NOTE Do not replace Drive Belt Cover 6 INSTALL SPINDLE LOCK REPLACEMENT 3 3 2 3 13 3 REPAIR DATA 29MB DRIVE MOTOR 29MB DISK CONSOLE 600P84228 7 REMOVE CAPACITOR FROM BRACKET a Place small screwdriver under top edge of capacitor bracket b remove capacitor carefully apply pressure with screwdriver and pull on body of capacitor 8 REMOVE DRIVE MOTOR a Remove Drive Motor connector 14 from bracket b Remove the two screws securing the motor relay to casting NOTE Ensure that the insulating washers on both sides of motor mounts are glued to casting or motor Support the motor while removing the four mounting screws d Remove Drive Motor assembly from casting 9 REMOVE PULLEY a Loosen the two set screws on Drive Motor pulley b Remove pulley from motor shaft Keep pulley for use with new Drive Motor REPLACEMENT 1 REPLACE PULLEY a Align one set screw with flat side of motor shaft and install pulley onto shaft b Place 0 035 inch 0 88 shim between outer edges of pulley and motor Move pulley against shim and tighten set screws d Remove shim 3 14 NOTE Ensure that the insulating washers are on both sides of motor mounts and that motor does not touch casting 2 REPLACE DRIVE MOTOR
20. ON CORRECT INCORRECT Replace C A Harness Step 3 If problem still exists replace Control PWA Replace Actuator PWA Replace 29MB Power Cable VOLTAGE TOLERANCES Xerox 6001860 4 8 to5 6 4 8 to 5 6 11 0 to 13 0 11 0 to 13 0 22 0 to26 0 6 TROUBLESHOOTING 29MB DISK CONSOLE CHECK CHARTS 6 02 600P84228 TEST INDICATION STEP PROCEDURE POINT CORRECT INCORRECT 6 02 DISK MP FAULT CODE CAUTION Performing the following steps with P43 connected to the HSIO PWA will write over and therefore destroy customer files NOTE When P43 is disconnected from the HSIO PWA the system cannot determine if there is a 29MB 42MB or 10MB Disk Drive installed Since the 10MB Data Wrap Around test does not require the Disk Drive to be connected this is the test you should select 1 Disconnect P43 only from HSIO PWA Run ALAG Visual Step2 Replace HSIO PWA Upon the completion of Test 0316 press STOP key on 8010 Workstation or BREAK key on Server Terminal When the MP reaches 0399 type a d When MP reaches 0799 type an s then 31 then press return Test ran successfully MP 0799 2 Connect P43 to HSIO PWA Locate the original MP Visual Code from the list below and access the specified Check Chart a 1611to 1618 inclusive Check Chart 6 02 1 b 1631 to 1636 inclusive Check Chart 6 04 c 1641 to 1643 inclusive Check Chart 6 05 d 1671 or 1672 Check Chart 6 03 e 1713 Check Chart 6 06 f 1741 1742 or 1791 Check Chart 6
21. P23 6 000000 1 122 P22 6 1 121 P21 61000000 1 J20 P20 6 1 8010 057 Figure 3 10 Read Write PWA 3 REPAIR DATA CONTROLPWA READ WRITEPWA DAMPER ASSEMBLY FIGURE 3 10 2 REPLACE CONTROL PWA 3 8 3 REPLACE VFO PWA 3 7 4 SWITCH ON SYSTEM POWER 5 RUNALAG 6 REPLACE LEFT SIDE COVER 3 10 DAMPER ASSEMBLY REF PL 4 2 REMOVAL 1 SWITCH OFF SYSTEM POWER 2 REMOVE BOTH SIDE COVERS 3 REMOVE DAMPER ASSEMBLY a Disconnect power harness connector J3 from Actuator PWA b Switch ON system power CAUTION DO NOT move Damper Assembly until disk speed h s been reached approximately five seconds after AC power is applied Movement of the heads without disk rotation may cause disk or head damage Remove damper cover d Rotate damper counterclockwise until actuator arm is located against the outer stop e Loosen set screw securing the damper and collar to actuator motor shaft Remove damper assembly from shaft 3 17 3 REPAIR DATA DAMPER ASSEMBLY REPLACEMENT CAUTION AC power must be applied while installing Damper Assembly 1 REPLACE DAMPER ASSEMBLY a Ensure that harness connector 13 is disconnected b Switch ON system power Install Damper Assembly onto actuator motor shaft NOTE Ensure that damper and collar are NOT in contact with actuator motor housing d Tighten set screw securing the damper to actuator motor shaft e Replace d
22. ROX ERROR MAP a Remove map from the right side of drive b Locate date on the Xerox error map If dated 11 30 82 or before or the map does not exist proceed to step 12 29M8 DISK CONSOLE 600P84228 OEM ERROR MAP A1004 SCAN ERROR LOG SERIAL A36497 BYTE COUNT LENGTH BITS 01315 14 02219 15 02220 03 03938 01 03939 02 END ERROR LOG XEROX ERROR MAP XX Megabyte Storage Device Serial number A12102 Date 22 Jan 82 BadPage Manual Media Page Cy HD Sec Table Entry Scan 3908 017 03 16 X 14420 064 03 00 X Number of bad pages 2 8010 054 1 Figure 3 6 Sample of OEM and Xerox Error Maps 3 REPAIR DATA 29MB DISK DRIVE FIGURE 3 6 RUN ALAG AND VERIFY A SUCCESSFUL COMPLETION If ALAG completes successfully proceed to step 6 b If ALAG fails while PV Scavenger is running proceed to step 6 If ALAG does not complete and an MP Code other than 1799 is displayed see MP Code List d if physical volume needs forward conversion Warnings is displayed on the screen proceed to step 13 CAUTION The following steps contain instructions that will destroy customer files DO NOT logon with Analyst privileges or perform these steps unless service manual procedures instruct you to do so Performing these exercises on Disk Drives containing any customer files will DESTROY ALL CUSTOMER INFORMATION 6 LOGON WITH ANALYST PRIVILEGES a Refer to 8000 NS Diagnostics Handbook for detailed instructions
23. SK CONSOLE 600P84228 1 1 HOW TO USE THIS MANUAL This service manual provides information necessary for main tenance of the 29MB Disk Console The 8000 Series Reference Manual provides the complete instructions for use of 8000 Series service manuals 1 2 MODEL CONFIGURATIONS Various models of 8000 Series products are available The 8000 Series Reference Manual provides product codes model configurations and catalog number information as well as related explanations 13 CALL MANAGEMENT The Call Management procedures are to be performed during every service call The complete Call Management procedures are provided in the 8000 Series Reference Manual 1 4 CHANGE TAG INDEX Refer to the 8000 Series Reference Manual for instructions about use of matrix tags and Tag Letter Classification definitions The 29MB Disk Console has one matrix tag The matrix tag is located on the bottom frame on the left side of the console Any important modification of the disk drive or related cables and connectors must be indicated on the 29MB Disk Console matrix tag 29MB DISK CONSOLE 1 GENERAL DATA 600P84228 CHANGE TAG INDEX CHANGE TAG INDEX FOR 29MB DISK CONSOLE Tag 1 moves slide lock hardware from 29MB Signal Cable to Processor connector panel to prevent N improper connection at Processor Related part is the 29M8 Signal Cable 152581277 2 CANCELLED 3 Tag 3 changes the molded connector hood on 29M8 Signal Cable to eli
24. TROUBLESHOOTING 600P84228 29MB DISK CONSOLE POWER DISTRIBUTION FIGURE 6 5 a e c b tif s gt 1 29MB DISK DRIVE ASSEMBLY PL 4 2 ACTUATOR PWA PL 4 2 i 5 52V 1 i amen i i 11 GND DRIVE MOTOR 4 H PL 4 2 as t ACN und 12 i 8 OE1 5 2 CONSOLE FAN y 764 29MB DISK CONSOLE POWER DISTRIBUTION CHAIN 1 1 8010 048 Figure 6 5 Chain 1 1 29MB Disk Console Power Distribution 6 19 29MB DISK CONSOLE 7 PLUG JACK LIST 600P84228 CHAPTER 7 PLUG JACK LIST 29MB DISK CONSOLE SERVICE MANUAL 7 1 7 PLUG JACK LIST INTRODUCTION HARNESS IDENTIFICATION PLUG JACK LOCATIONS WIRING DATA CONNECTOR IDENTIFICATION 7 1 INTRODUCTION Harnesses for the 29MB Disk Console are each identified with an alphanumeric code W00 These harness codes are defined in Section 7 2 The codes are used on plug jack location diagrams In Section 7 3 a plug jack location diagram Figure 7 1 is provided to show actual locations of plugs and jacks Each plug jack is identified by harness code and plug jack name Section 7 4 provides illustrations of the wiring data for each harness The wiring data illustrations Figures 7 2 and 7 3 use letter codes within a hexagonal symbol which identify related connector diagrams Pin location diagrams for various types of connectors are provided in Section 7 5 The diagrams Figures 7 4 to 7 8 inclusive show pin side view of the connectors 7 2 HARNESS IDENTIFICATION
25. WA 3 4 7 6 Connector Jumper Locations for 29MB Control PWA 1 1 Connector wwwwwww YN Un gt Yin 3 4 Jumper Locations for 23MB Control PWA 3 5 Jumper Locations for 29MB Actuator PWA 3 5 Jumper Locations for 23MB VFO PWA 3 6 Sample of Shugart and Xerox Error Maps 3 7 Rigid Disk Drive or Processor Software Preparation Flow Chart 3 8 7 8 Connector Type 3 8 Actuator Lock Installation 3 11 3 9 29MB Disk Drive Assembly 3 12 3 10 Read Write PWA 3 17 4 1 29MB Console Mechanical Parts 4 3 4 2 Disk Drive Assembly 4 5 4 3 29MB Console Harnesses 4 7 6 1 Control PWA Version A 6 4 6 2 Control PWA Version B 6 5 6 3 6 6 6 4 Test Connector 6 17 6 5 29MB Disk Console Power Distribution 6 19 7 1 29M8 Disk Console Plug Jack Locations 7 3 7 2 29MB Power Cable W20 7 3 7 3 29M8 Signal Cable W21 7 4 7 4 Connector 7 5 7 5 Connector D 7 5 29MB DISK CONSOLE 1 GENERAL DATA 600P84228 CHAPTER 1 GENERAL DATA 29MB DISK CONSOLE SERVICE MANUAL 1 1 1 GENERAL DATA HOW TO USE THIS MANUAL MODEL CONFIGURATIONS CALL MANAGEMENT CHANGE TAG INDEX 29MB DI
26. amper cover f Switch OFF system power 9 Connect power harness connector to J3 on Actuator PWA SWITCH ON SYSTEM POWER RUN ALAG REPLACE BOTH SIDE COVERS 3 18 29MB DISK CONSOLE 600P84228 29MB DISK CONSOLE 4 PARTS IDENTIFICATION 600P84228 CHAPTER 4 PARTS IDENTIFICATION 29MB DISK CONSOLE SERVICE MANUAL USO XC ONLY 4 1 4 PARTS IDENTIFICATION 29MB CONSOLE MECHANICAL PARTS PL4 1 29MB CONSOLE MECHANICAL PARTS ITEM O dun gt Why gt gt hh DO wn 2 81938 NSC 2 82011 127 1275 2581969 NSC 30P83957 2581967 26P80475 17P80207 3P1454 17P80199 2581968 NSC 91P81325 6015920 NSC 2P82021 NSC 29P80410 DESCRIPTION Cover Top Plate Fan Cover Fan Console Cover Rear includes item 13 Bracket Drive Mounting Cover Side includes item 13 Stud Castor Locking Castor Rear Clip Quarter Turn Receptacle Castor Front Cover Front includes 12 13 Label Logo Kit Quarter Turn Hardware Stud Quarter Turn P O item 13 Spring Ejector P O item 13 Washer Nylon P O item 13 Retainer Split Ring P O item 13 Bezel Front Cover Nut Speed USO XC ONLY A 112W39710 B 112W75810 C 201W21802 D 256W11402 E PN F ee 29MB DISK CONSOLE 600P84228 Sems Screw 8 32 x 7 16 Sems Screw 1 4 20 x 1 2 Nut 1 4 20 Washer 1 4 Screw RX only Screw RX only NSC Call the Network Support Center to o
27. ator PWA Disconnect J8 from Actuator PWA tolerance Voltage in question is within TEST POINT CORRECT 5 2V 5 2V 24V 12V 12V 8010 009 Figure 6 4 Test Connector Test Connector Step 3 to RTN Test Connector Step 4 Connect J8 to Actuator PWA Disconnect J7 from the Control PWA Voltage in question is within tolerance to RTN 6 TROUBLESHOOTING CHECK CHART 6 09 FIGURE 6 4 INDICATION INCORRECT Replace Actuator PWA Replace C A Harness 6 17 6 TROUBLESHOOTING 29MB DISK CONSOLE CHECK CHART 6 09 600P84228 TEST INDICATION STEP PROCEDURE POINT CORRECT INCORRECT 4 Connect J7 to the Control PWA Disconnect right Test Connector Step 5 Replace Control PWA hand C V ribbon Harness from bottom of the Control PWA and J6 from the Control PWA Voltage in question is within tolerance 5 Connect C V ribbon Harness to the Control PWA Test Connector Step 6 Replace C V Harness Disconnect 12 from VFO PWA Voltage in question 15 within tolerance 6 Connect J2 to VFO PWA Voltage in question is Test Connector Step 7 Replace VFO PWA within tolerance to RTN 7 Connect J6 to the Control PWA Voltage in ques Test Connector Return to Level 1 Replace R W PWA tion is within tolerance to RTN VOLTAGE TOLERANCES Xerox 6001860 Digital Meter 4 8 to 5 6 5 02 to 5 38 4 8 to 5 6 5 02 to 5 38 11 0 to 13 0 11 4 to 12 6 11 0 to 13 0 11 4 to 12 6 22 0 to 26 0 22 8 to 25 2 6 18 29MB DISK CONSOLE 6
28. btain parts C Removal and Replacement 3 1 3 2 29MB DISK CONSOLE 4 PARTS IDENTIFICATION 600P84228 29MB CONSOLE MECHANICAL PARTS 13 INCLUDES 14 TO 17 17 1615 8000 007 2 Figure 4 1 29MB Console Mechanical Parts 4 3 4 PARTS IDENTIFICATION DISK DRIVE ASSEMBLEY PL4 2 DISK DRIVE ASSEMBLY ITEM 0 wn gt Mn amp 4 4 PART NO 99P80929 82P80897 99P80921 99P81093 99P87543 99P81095 99P87509 99P87511 99P81094 99P87510 NSC 99P80924 99P80925 NSC 99P80927 99P81226 USO XC ONLY 29MB DISK CONSOLE 600P84228 DESCRIPTION E A 201W21802 Hex Nut 1 4 20 Motor 60Hz Drive B 256W11402 Lockwasher 1 4 Drive Assembly 29MB Disk C 256W10902 Lockwasher No 8 PWA Actuator D 113W23002 Screw 8 32 x 5 8 Harness C A E 112W39610 Screw 8 32 x 3 8 Lock Actuator Note 1 113w22402 Screw 8 32 x 1 4 Damper Assembly 113W17208 Spindle Lock Screw 4 40 x 3 4 PWA Read Write H 259W10502 Spindle Lock Lockwasher No 4 PWA VFO J 113W 16602 Screw 4 40 x 3 8 Harness C V Terminator RX only NSC i PWA Control SC the Network Support Center to obtain parts Cover Belt NOTE 1 Actuator lock may not be provided on all disk drives Belt 60Hz Drive Pulley Belt Kit Belt Retainer C Removal and Replacement 3 1 to 3 10 inclusive 29MB DISK CONSOLE 4 PARTS IDENTIFICATION 600P84228 DISK DRIVE ASSEMBLY 8000 008 2 Figure 4 2 Disk Dri
29. d Remove the four bolts securing the Disk Drive to frame e Carefully pull Disk Drive from console f Remove brackets from Disk Drive REPLACEMENT FIGURES3 1TO 3 5 INCLUSIVE CAUTION Jumpers on new Disk Drive must be configured to match old Disk Drive jumper location BEFORE installation Several Control PWAs are now in use Ensure that the correct figure is referred to when verifying the jumper locations 1 INSTALL JUMPERS ON DISK DRIVE PWAs a Refer to figures 3 1 to 3 5 inclusive and install jumpers as shown b Remove any jumpers not shown in figures Add any jumpers necessary as shown in figures 3 REPAIR DATA FIGURES 3 1 3 2 DS 1 L T 0 2 om X i R Y TP3 SC BC TP280 mo am o S1 TP26 0 0 am C 7 TERMINATOR CHIP INSTALLED L M S Ns T r ELF SRF o TP11 12 14 TP17 1P19 TP20 Tp21 TP18 1P22 8010 049 Figure 3 1 Jumper Locations for 29MB Control PWA 3 4 Version A 29MB DISK CONSOLE 600P84228 i o 0 GR mm RY TP2 T TP28 TP23 um ST TERMINATOR CHIP INSTALLED 051 iL 1 cp TP14 0000 1 E oue SHORTING PLUG o TP22 1 1P7 BC 8765 91011 12 Scam o J Bs TP17 16 ERE TP26 O am 0 51 2 TP19 o TP11 TP20 8010 050 Figure 3 2 Jumper Locations for 23MB Control PWA Version B 29MB DISK CONSOLE 600P84228
30. h the access hole in drive Belt Cover b Place lock in storage hole indicated by the label at bottom of frame 3 REPLACE LEFT SIDE COVER DRIVE MOTOR ACTUATOR PWA VEO PWA ACTUATOR LOCK CONTROL PWA READ WRITE PWA DAMPER 8010 056 Figure 3 9 29MB Disk Drive Assembly 3 12 29MB DISK CONSOLE 600P84228 REPLACEMENT CAUTION DO NOT switch ON system power when spindle is locked 1 SWITCH OFF SYSTEM POWER 2 REMOVE LEFT SIDE COVER 3 REMOVE DRIVE BELT COVER CAUTION DO NOT rotate spindle in a counterclockwise direction Disk and heads may be damaged 4 INSTALL SPINDLE LOCK a Rotate spindle slowly in a clockwise direction only until hole in pulley aligns with hole in casting b Remove spindle lock screw from storage hole c Insert spindle lock screw and tighten 5 REPLACE DRIVE BELT COVER 6 REPLACE LEFT SIDE COVER 3 4 29MB DRIVE BELT REF PL 4 2 REMOVAL 1 SWITCH OFF SYSTEM POWER 2 REMOVE LEFT SIDE COVER 3 REMOVE DRIVE BELT COVER 3 REPAIR DATA SPINDLELOCK 29MB DRIVE BELT 29MB DRIVE MOTOR CAUTION DO NOT rotate spindle in counterclockwise direction Disk or heads may be damaged 4 REMOVE DRIVE BELT a Rotate spindle OW E in a clockwise direction only and work belt off pulley REPLACEMENT NOTE Ensure that Drive Belt is installed with part number on outside 1 REPLACE DRIVE BELT a Perform removal procedure in reverse order b RunALAG 3 5 29MB DRIVE MOTOR REF PL 4 2 RE
31. lace Actuator PWA if problem still exists call for assistance Replace in order Actuator PWA Damper Assembly If problem still exists call for assistance 29MB Signal Cable Damper Assembly If problem still exists call for assistance Replace in order Control PWA C A Harness Actuator PWA Step 5 6 15 6 TROUBLESHOOTING 29MB DISK CONSOLE CHECK CHARTS 6 06 6 07 6 08 6 09 600P84228 TEST INDICATION STEP PROCEDURE POINT CORRECT INCORRECT 5 Measure HSIO PWA with Logic Probe 600T1580 Probe shows pulsing indication HSIO PWA 143 36 Replace 29MB Signal Harness connected Cable 6 07 WRITE ERRORS 1 Run Fault Analysis When 1740 is on the MP Control PWA TP17 Replace in order measure Write Data Pattern on Control PWA with Figure 6 1 or 6 2 R W PWA Logic Probe 60011580 Probe shows data flow VFO PWA High lamp lit steady and Low lamp pulsates HSIO PWA 6 08 COOLING FAN 1 Voltage at Fanis as follows Fan Connector P2 1 Replace Fan USO 103 to 127 VAC to2 RX 193 to 264 VAC 6 09 RIGID DISC DRIVE LOADING 1 Connect J1 to rear of Processor and disconnect J3 Test Connector Step 2 from Actuator PWA Voltage in question is within to tolerance Replace in order HSIO PWA 29MB Signal Cable Replace in order Control PWA HSIO PWA 29MB Signal Cable Replace 29MB Power Cable Replace 29MB Power Cable 29MB DISK CONSOLE 600P84228 PROCEDURE RETURN Connect 33 to Actu
32. lifornia 90245 Attn Manager OS Service Education NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES ge Prepared by Xerox Corporation Office Systems Division Customer Service Service Education 701 S Aviation Blvd El Segundo California 90245 Copyright 1984 by XEROX CORPORATION XEROX and 8000 are trademarks of XEROX CORPORATION Printed in U S A
33. minate interference between R cable connector and rear cover Related part is the 29MB Signal Cable 1525825031 225 Serial No Cut in T25 Initial Tag 225 changes the molded connector hood on 29MB Signal Cable to eliminate interference between cable connector and rear cover Related part is the 29MB Signal Cable 1525825031 1 3 29MB DISK CONSOLE 2 INSTALLATION REMOVAL 600P84228 CHAPTER 2 INSTALLATION REMOVAL 29MB DISK CONSOLE SERVICE MANUAL REFER TO 8000 SERIES REFERENCE MANUAL 29MB DISK CONSOLE 3 REPAIR DATA 600P84228 CHAPTER 3 REPAIR DATA 29MB DISK CONSOLE SERVICE MANUAL 3 REPAIR DATA CONSOLE TOPCOVER CONSOLE FAN 3 1 CONSOLE TOP COVER REF PL 4 1 i REMOVAL 1 SWITCH OFF SYSTEM POWER 2 REMOVE BOTH CONSOLE SIDE COVERS 3 REMOVE CONSOLE TOP COVER a Remove the six speed nuts securing the Top Cover to frame b Remove Top Cover REPLACEMENT 1 REPLACE CONSOLE TOP COVER a Perform removal procedure in reverse order 3 2 CONSOLE FAN REF PL 4 1 REMOVAL 1 SWITCH OFF SYSTEM POWER 2 REMOVE CONSOLE REAR COVER 3 REMOVE THE CONSOLE FAN a Remove screws securing the Fan Cover to frame b Remove the Fan Cover Disconnect harness connector from the Fan d Remove the Fan from console 29MB DISK CONSOLE 600P84228 REPLACEMENT CAUTION The Fan must be installed with arrow pointing to rear of console for the correct air flow 1 REPLACE THE CONSOLE FAN a Pe
34. return If Xerox error map was dated 11 30 82 or before proceed to step 15 Select Page Format and enter bad pages from Xerox error map and bad pages detected during media scan Proceed to step 16 MANUALLY ENTER BAD PAGES FROM OEM MAP AND MEDIA SCAN a Refer to the 8000 NS Diagnostics Handbook for detailed instructions 29MB DISK CONSOLE 600P84228 16 RUN ALAG AND VERIFY SUCCESSFUL COMPLETION 17 RETURN ERROR MAPS TO PLASTIC POUCH 18 REPLACE COVERS 19 INFORM SYSTEM ADMINISTRATOR TO PARTITION DISK INSTALL SYSTEM SOFTWARE AND RESTORE FILES 3 3 1 ACTUATOR LOCK REF PL 4 2 REMOVAL NOTE Some 29MB Disk Drives are not equipped with Actuator Locks Do not perform procedure if drive is without Actuator Lock feature See PL 4 2 for Actuator Lock part number 1 SWITCH OFF SYSTEM POWER 2 REMOVE LEFT SIDE COVER 3 REMOVE ACTUATOR LOCK FIGURE 3 8 Disconnect power harness connector from J3 on the Actuator PWA b Switch ON system power CAUTION Do not move Damper Assembly until disk speed has been reached approximately five seconds after AC power is applied Movement of heads without disk rotation may cause disk or head damage c Wait for disk to reach proper speed 29MB DISK CONSOLE 600P84228 d Remove Actuator Lock from motor and damper assembly by pulling it down e Place lock on shelf above Disk Drive f Switch OFF system power 9 Connect power harness connector to J3 on Actuator PW
35. rform removal procedure in reverse order 29MB DISK CONSOLE 600P84228 3 3 29MB DISK DRIVE REF PL 4 2 REMOVAL NOTE RX only References in the following procedures to a call for assistance or report of conditions should be made to the RX Technical Specialist CAUTION Drive replacement deletes customer files This requires restoration of files by customer BEFORE replacing drive contact RES or NSC then notify customer s System Administrator or Network Coordinator Customer MUST be notified BEFORE replacing rigid drive It is possible that Systems Analyst will know work around procedure and drive will not require re placing If customer will not agree to drive replacement contact Systems Analyst for further instructions NEVER REPLACE DISK DRIVE WITHOUT FIRST NOTIFYING CUSTOMER AND SYSTEMS ANALYST 1 ENSURE THAT THE CORRECT DISK DRIVE REPLACEMENT PROCEDURE IS FOLLOWED a Ensure that RES or NSC is informed b Customer has approved and understands that disk drive is to be replaced c Systems Analyst has been informed 2 SWITCH OFF SYSTEM POWER 3 REPAIR DATA 29MB DISK DRIVE 3 REMOVE BOTH SIDE COVERS 4 INSTALL ACTUATOR LOCK REPLACEMENT 3 3 1 5 INSTALL SPINDLE LOCK REPLACEMENT 3 3 2 6 REMOVE 29MB DISK DRIVE a Disconnect power harness connector from J4 on Disk Drive Motor b Disconnect power harness connector J3 on Actuator PWA Disconnect signal harness connector from 11 on the Control PWA
36. se exercises on Disk Drives containing any customer files will DESTROY ALL CUSTOMER INFORMATION NOTE If you cannot logon system locked up perform an Alternate Boot 0002 and press the BREAK or STOP key when Fault Analysis begins 13 LOGON ON WITH ANALYST PRIVILEGES a Refer to 8000 NS Diagnostics Handbook for detailed instructions 14 RUN NEW DISK CHECKOUT FOR 10 PASSES TO DETERMINE THE CONDITION OF THE HARDWARE a Refer to the 8000 NS Diagnostics Handbook for detailed instructions 3 9 3 REPAIR DATA 29MB DISK DRIVE ACTUATOR LOCK 15 3 10 b If an error is detected other than a Header CRC Label CRC or Data CRC while Destructive Exerciser is running perform Level 1 Checkout in the 8000 Processor Service Manual If no error is detected while Destructive Exerciser is running or the error is a Header CRC Label CRC or Data CRC continue with next step When Do you wish to reconstruct the bad page table at this time Y N Y is displayed press return When Do you wish to perform a media scan Y N is displayed type y and press return When Pass count 1 1000 10 is displayed type 2 and press return When Retry Count 0 20 2 is displayed press return If bad pages are detected while media scan is running record and save to use later If Du you wish to test the bad pages Y N is displayed type n and press return When Do you wish manually enter bud pages YIN is displayed type y and press
37. ve Assembly 4 5 4 PARTS IDENTIFICATION 29M8 CONSOLE HARNESSES USO XC ONLY OS 0084228 PL4 3 29MB CONSOLE HARNESSES ITEM 1 YOU ds wit PART NO 152525031 152525030 NSC 19P20514 NSC 19P20515 152525440 DESCRIPTION A Cable W21 29MB Signal TAGS 3 225 B Cable W21 19MB Signal alt C Clamp Cable D Clamp Cable Block Cable Tie P O item 1 NSC Cable W20 29MB Power Cover Rear Cable RX only Clamp Cable RX only 112W36710 Screw 8 32 x 7 16 258W 10902 Lockwasher No 8 Screw RX only Screw RX only Call the Network Support Center to obtain parts 29MB DISK CONSOLE 600P84228 4 PARTS IDENTIFICATION 29MB CONSOLE HARNESSES Figure 4 3 29MB Console Harnesses 4 7 29MB DISK CONSOLE 5 DISPLAY QUALITY 600P84228 CHAPTER 5 PRINT DISPLAY QUALITY 29MB DISK CONSOLE SERVICE MANUAL EN REFER TO APPROPRIATE SERVICE MANUAL 5 1 29MB DISK CONSOLE 6 TROUBLESHOOTING 600P84228 CHAPTER 6 TROUBLESHOOTING 29MB DISK CONSOLE SERVICE MANUAL 6 1 6 TROUBLESHOOTING INTRODUCTION INTRODUCTION Service Strategy The steps required for isolation of faults in the 8000 Network System are provided in the sequence below These steps are described in detail in the 8000 Processor Service Manual Instructions for using diagnostics are provided in the 8000 Network Systems Diagnostics Handbook i Perform Level 01 Troubleshooting using the Level 01 Troubleshooting Flowchart
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