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v Notice the push-pull selector next to the gears on the left side of the printer. Push-Pull Selector Figure 58. Push-Pull Selector v Check the rear tractor push-pull selector setting. For push paths, ensure that the push-pull selector is completely pushed down and to the rear so that the upper and lower gears on the selector are positioned, as shown in Figure 59 on page 305. Chapter 5. Removals and Adjustments 304

Section	Page
4247 Start Page	3
Safety Information	9
Safety Notices	9
General Safety	11
Electrical Safety	13
Pre-Service Inspection	15
Related Publications	17
Model A00 Publications	17
Models 001 and 002 Publications	17
Model 003 Publications	18
Common Publications	18
Preface - What's New in the Model 003	19
Chapter 1. Diagnosing Problems	20
Maintenance Analysis Procedures (MAPs)	20
Defining The Problem	20
MAP 0100: START OF CALL	23
MAP 0110: Automatic Sheet Feeder	26
MAP 0120: Parallel or Serial Attachment, Model A00 and Model 003	33
MAP 0121: Parallel with Twinax or Coax Attachments, Models 001, 002, or003	41
Attachment Card Procedure 1	50
Attachment Card Procedure 2	56
MAP 0122: Network Print Server Attachment	59
MAP 0130: No Paper Movement	62
MAP 0131: Paper Path Sensor	66
MAP 0140: Printhead Drive	70
MAP 0150: Power Supply	75
MAP 0160: Ribbon Feed and Ribbon Lift	89
MAP 0170: ASF Stacker	94
MAP 0180: Top Cover Interlock	98
MAP 0190: Form Feed Problems	101
MAP 0200: 55 AFTA Errors	127
MAP 0210: Intermittent Failures	130
MAPs Reference Tables	133
Reference Table 1, Model A00 Error Messages	133
Reference Table 2, Models 001, 002, and 003 Error Messages	136
Reference Table 3, No Printed Characters	146
Reference Table 4, Print Quality Failures	146
Reference Table 5, Operator Panel and Miscellaneous Problems	149
Reference Table 6, LED and Test Page Problems – NPS and LANAttachment Card	152
Reference Table 7, Network Server Problems – NPS and LAN AttachmentCard	156
Reference Table 8, Power Supply Connector Pins and Voltages	156
Reference Table 9, Base Code Compatibilities	157
Reference Table 10, Ribbon Lift and 26–Pin Cable Connectors	158
Reference Table 11, Paper Paths	158
Reference Table 12, Minimum Microcode	158
Chapter 2. Diagnostics	160
Test and Diagnostic Information - Model A00	160
How To Print the Print Test	160
How To Print Firmware Part Number and Version Levels	160
How To Print the Power On Configuration	160
How To Print the Program Setup Configuration	161
How To Run the Test and Diagnostic (T&D) Programs	161
T&D Descriptions	164
T&D01 - Microcode Test	164
T&D02 - Microcode Test	164
T&D03 - Not Used	165
T&D04 - Microcode Test	165
T&D05 - Operator Panel LED and Key Test	165
T&D06 - Parallel Attachment Test	166
T&D07 - Not Used	166
T&D08 - Microcode Test	167
T&D09 - Serial Attachment Test	167
T&D10 - Stacker/ASF Test	167
T&D11 - Pinch Roller Status/Sensor Tuning/Ribbon Feed and Lift Motors	168
T&D12 - AFTA Calibrate Test	171
T&D13 - Not Used	174
T&D14 - Fanfold Form Printout Test	174
T&D15 - First Printing Line Adjustment Test	175
T&D16 - Bidirectional Adjustment Test	178
T&D17 - Tear-Off Line Adjustment Test	180
T&D18 - Single Sheet Feed Printout	184
T&D19 - Top Cover Interlock Test	185
T&D20 - NLQ Printhead Mode	185
T&D21 - Paper Path Sensor Test	186
T&D Error Messages and Actions	190
Test and Diagnostic Information - Models 001, 002, and 003	197
How To Print the Printer Demonstration	197
How To Print Firmware Part Number and Version Levels	197
How to Print the Printer Configuration and the Custom Sets	198
How to Print and Clear the Error Log, and Print the Usage Metrics	198
How To Run the Test and Diagnostic (T&D) Programs	201
T&D Descriptions	204
T&D01 - Microcode Hardware Match Test	204
T&D02 - Microcode Test	204
T&D04 - Microcode Test	205
T&D05 - Operator Panel LED and Key Test	205
T&D06 - Parallel Attachment Test	206
T&D08 - Microcode Test	207
T&D09 - Serial Attachment Test – Model 003 with the Serial Card Installed	207
T&D10 - Mechanical Option Test	208
T&D11 - Pinch Roller/Sensor Tune/Ribbon Feed and Lift Motors	208
T&D12 - AFTA Calibrate Test	210
T&D13 - Not Used	214
T&D14 - Fanfold Form Printout Test	214
T&D15 - First Printing Line Adjustment Test	215
T&D16 - Bidirectional Adjustment Test	217
T&D17 - Tear-Off Line Adjustment Test	218
T&D18 - Single Sheet Feed Printout	221
T&D19 - Top Cover Interlock Test	222
T&D20 - NLQ Printhead Mode (Models 001 and 003 Only)	222
T&D21 - Paper Path Sensor Test	224
T&D30 - Adapter Board Link Test	227
T&D31 - Adapter Board CPU Test	227
T&D32 - Adapter Board EPROM Test	228
T&D33 - Adapter Board Dynamic RAM Test	228
T&D34 - Adapter Board Static RAM Test	228
T&D35 - Adapter Board Shared RAM Test	229
T&D36 - Adapter Board BCP Test	229
T&D37 - Adapter Board Digital Test	229
T&D38 - Adapter Board Analog Test	230
T&D Error Messages and Actions – Models 001, 002, and 003	231
Chapter 3. Circuit Diagrams	240
Wiring Diagrams	240
Printhead and Motors Wiring Diagrams	240
18-Wire Printhead Wiring (Models A00, 001, and 003)	242
9-Wire Printhead Wiring (Model 002)	244
Carriage Motor Wiring	246
Paper Feed Motor Wiring	248
AFTA Motor Wiring	250
Ribbon Drive Motor Wiring	252
Ribbon Lift Motor Wiring	253
ASF Stacker Motor Wiring	255
Cable Diagrams	258
Printhead Cable Wiring	258
Operator Panel Cable Wiring	259
Sensor Cable Assembly Wiring	259
Tractor Assembly Cable Wiring	260
Stacker Cable Wiring	261
Attachment Connectors	262
Chapter 4. Locations	265
Locations and Orientations	266
Logic Board Microcode Module Locations and Orientation - Model A00	266
Logic Board Microcode Module Locations and Orientation - Models 001and 002	268
Attachment Card Microcode Module Location and Orientation - Models 001and 002	269
Microcode Module Label - Model A00	270
Microcode Module Label - Models 001 and 002	270
Connector Locations - Early Model A00	271
Connector Locations - Later Model A00, and Models 001 and 002	272
Connector Locations - Model 003	273
Network Print Server Attachment Pin 18 +5 V Jumper Location and theParallel Connector	273
Chapter 5. Removals and Adjustments	275
Service Position	275
	275
Removing Covers	275
Installing Covers	278
Service Checks and Adjustments	279
Carriage Drive Belt	279
Service Check	279
Adjustment	280
Carriage Support Shaft	280
Service Check and Adjustment	280
Paper Feed Belt	281
Service Check	281
Adjustment	282
Automatic Forms Thickness Adjustment (AFTA)	282
Quick AFTA Service Check and Adjustment	283
Standard AFTA Service Check and Adjustment	285
First Line Printing	294
Service Check	294
Adjustment	294
Bidirectional Printing	294
Service Check	295
Adjustment	295
Tear-Off Line	295
Service Check	295
Adjustment	295
Sensor Service Checks	296
Paper Presence Sensor Check	296
Tractor Sensor Check and Adjustment	300
Paper Path Service Checks	301
Main Paper Drive Check and Adjustment	301
Individual Forms Paths Checks	310
Automatic Sheet Feeder (ASF) Bins Service Check	319
ASF Stacker Service Check	322
Platen Pinch Roller Assembly Service Check	323
Tractor Assembly Service Check	325
Ribbon Feed and Ribbon Lift Service Check	330
Printhead Drive Service Check	333
Print Quality Checks	338
Fanfold Forms Printout	338
Manual Sheet Feed Printout	343
Removals/Replacements	346
Overview	346
Printer Covers	347
Removal	347
Replacement	352
Ribbon	353
Removal	353
Installation	354
Operator Panel	355
Removal	355
Replacement	355
Printhead	356
Removal	356
Replacement	358
Model 003 Attachment Cards: Serial, Twinax, LAN, Coax	359
Removal	359
Replacement	360
Model 003 – IPDS and SCS Feature Identification	361
Model 003 – Serial Card Jumper Locations	362
Attachment Card Guide Assembly with the Interposer Connector (Model003)	364
Removal	364
Replacement	366
Logic Board - Model 003	366
Replacement	369
Logic Board - Model A00	370
Removal	370
Replacement	376
EMI Filter (Model A00 Early-Level Logic Board Only)	377
Removal	377
Replacement	378
Logic Board - Models 001 and 002	378
Removal	378
Replacement	383
Logic Board Component Inspection Reference	385
Serial Attachment Card - Model A00	390
Removal	390
Replacement	391
Coax Attachment Card - Models 001, and 002	392
Removal	392
Replacement	395
Twinax Attachment Card - Models 001, and 002	396
Removal	396
Replacement	399
Power Supply	400
Removal	400
Replacement	402
Ribbon Drive Motor	403
Removal	403
Replacement	405
Ribbon Lift Motor	405
Removal	405
Installation	407
Automatic Forms Thickness Adjust (AFTA) Assembly	407
Removal	407
Replacement	411
Platen Pinch Roller Assembly	411
Removal	411
Replacement	413
Carriage Drive Motor Assembly	415
Removal	415
Replacement	420
Carriage Drive Belt	420
Removal	420
Replacement	422
Paper Bail Assembly	422
Removal	422
Installation	424
Manual Sheet Feed Tray	425
Removal	425
Replacement	426
Upper Feed Roller Shaft Assembly	426
Removal	426
Replacement	429
Platen Assembly	429
Removal	429
Replacement	431
Printhead Mask	432
Removal	432
Installation	434
Lower Feed Roller Assembly	435
Removal	435
Replacement	437
Carriage Assembly	437
Removal	437
Replacement	438
Carriage Support Shaft	439
Removal	439
Installation	440
Sensor Cable Assembly	441
Removal	441
Replacement	443
Printer Mechanical Assembly	444
Removal	444
Replacement	446
Paper Feed Motor	447
Removal	447
Replacement	448
Paper Feed Motor Drive Belt	448
Removal	448
Replacement	451
Lower Plastic Shield/Support Assembly	451
Before You Begin	451
Removal - One-Piece Version	452
Installation - Two Piece Version, after removal of the one piece version	455
Removal - Two-Piece Version	455
Replacement - Two-Piece Version	456
Chapter 6. Parts Catalog	457
How To Use This Parts Catalog	457
Assemblies	459
Chapter 7. Preventative Maintenance	483
Appendix A. Printer Configuration	484
Configuration Information — All Models	484
Overview	484
Model A00 Configuration Information	485
Power On Configuration Menu	485
Program Configuration Menu	492
Models 001, 002, and 003 Configuration Information	499
Unlocking and Locking Printer Configuration Menu	499
How To Print the Printer Configuration and the Custom Sets	499
Coax Configuration Printout - Sample Defaults	500
Twinax Configuration Printout - Sample Defaults	502
Changing a Value In the Printer Configuration Menu	504
Coax Attachment Configuration	506
Twinax Attachment Configuration	517
Model 003 Parallel and Serial Configuration	527
Appendix B. Supplies, Forms, Paths, & EnvironmentalConsiderations	531
Overview	531
Supplies	531
Choosing a Forms Path for Your Needs	531
Choosing a Forms Path for Special Forms	532
Other Considerations for Forms	533
Forms and Paper Specifications	534
Forms Stacking Recommendations	539
Forms Stack Input and Output Locations	540
Forms Paths	541
Front Push Forms Path	541
Rear Push Forms Path	542
Dual Push Forms Path	543
Rear Pull or Push-Pull Forms Path	544
Automatic Sheet Feeder Paper Path	545
Forms Stacking With the 4247 Printer Stand	545
Environmental Requirements	546
Operating Environment	546
Nonoperating Environment	547
Shipping Environment	547
Storage Environment	548
Appendix C. Flashing the Memory of the Model 003	549
Flashing the Memory of the Model 003	549
Downloading Model 003 Microcode from the IBM First Service System IIdata base	549
Downloading Model 003 Microcode from your computer into the flashmemory	551
Part Number Index	557