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A295
Gestetner A295 Manuals
Manuals and User Guides for Gestetner A295. We have
1
Gestetner A295 manual available for free PDF download: Service Manual
Gestetner A295 Service Manual (600 pages)
Brand:
Gestetner
| Category:
All in One Printer
| Size: 28.05 MB
Table of Contents
Service Manual
1
Table of Contents
13
Important Safety Notices
23
Laser Safety
24
Overall Information
27
Overall Machine Information
29
Specifications
29
Copier Engine
29
Adf
32
Machine Configuration
33
Component Layout
34
Copier Engine
34
Adf
35
Paper Path
36
Copy Process
37
Drive Layout
39
Copier Engine
39
Adf
40
Electrical Component Descriptions
41
Copier Engine
41
Adf
47
Detailed Descriptions
49
Detailed Section Descriptions
51
Document Feeder
51
Pick-Up Roller Release
51
Bottom Plate Lift
52
Pick-Up and Separation
53
Original Feed
54
Original Size Detection
55
Original Transport
56
Original Skew Correction
57
Original Inversion and Feed-Out
58
Jam Conditions
62
Scanning
63
Overview
63
Scanner Drive
64
Original Size Detection in Book Mode
65
Image Processing
67
Overview
67
Sbu
68
Auto Image Density (Ads)
69
Image Processing Steps and Related Sp Mode
70
Auto Shading
76
Background Erase
77
Independent Dot Erase
78
Filtering, Main Scan Magnification/Reduction
79
GAMMA (Γ) CORRECTION
81
Gradation Processing
81
Line Width Correction
82
Laser Exposure
83
Overview
83
Optical Path
84
Auto Power Control (Apc)
85
Four Beam Laser Writing
86
Ld Safety Switches
87
Drum Unit
88
Process Control
88
Toner Density Control
93
Drum Unit Components
96
Drive
97
Drum Charge
98
Drum Cleaning
100
Others
103
Development
106
Overview
106
Development Mechanism
107
Drive
108
Crossmixing
109
Development Bias
110
Toner Supply and Recycling
111
Toner Bank
111
Supplying Toner to the Development Unit
115
Toner Hopper
116
Toner Recycling and Waste Toner Collection
118
Paper Feed
121
Overview
121
Drive
122
Paper Lift - Trays 2 & 3
123
Pick-Up and Feed - Trays 1 to 3
125
Remaining Paper/ Paper End Detection - Trays 2 & 3
129
Paper Size Detection - Trays 2 & 3
130
Tray Lock - Trays 2 & 3
131
Tandem Feed - Tray 1
132
Vertical Transport
139
Paper Registration
140
Image Transfer and Paper Separation
144
Image Transfer and Paper Separation
145
Transfer Belt Unit Lift
146
Paper Transportation and Belt Drive
147
Transfer Belt Cleaning
148
Toner Collection
149
Transfer Anti-Condensation Heater
150
Fusing
151
Overview
151
Fusing Entrance Guide
152
Fusing Unit Drive
153
Fusing Lamp Control
154
Oil Supply and Cleaning
155
Paper Cooling
156
Fusing Pressure
157
Hot Roller Stripper Release
158
Paper Exit/Duplex
159
Overview
159
Paper Exit Mechanism
160
Duplex Drive Mechanism
161
Inverter
162
Duplex Tray Feed Mechanism
164
Basic Duplex Feed Operation
165
Energy Saver Modes
169
Overview
169
Energy Saver (Panel Off) Mode
170
Low Power Mode
171
Off Mode
172
Others
175
Operation Unit
175
Door Safety Switch Lock Tools
176
Hdd Control
177
Data Path through the Interface Board
179
Installation
181
Installation Procedure
183
Installation Requirements
183
Environment
183
Machine Level
183
Minimum Space Requirements
184
Power Requirements
184
Copier (A294)
185
Accessory Check
185
Installation Procedure
187
Finisher Installation (B302)
195
Accessory Check
195
Installation Procedure
196
Accessory Check
199
Lct Installation (B)
199
Installation Procedure
203
Installation Procedure for the Tray Heater Kit
203
Punch Unit Installation (A812)
206
Accessory Check
206
Punch Unit Installation
207
A3/Dlt Tray (B331)
210
Accessory Check
210
Installation Procedure
211
Key Counter Installation
214
Interface Board (CD-Rw/Tandem Copy Kit/Printer Controller)
217
Installation Procedure
217
Installation Notes for CD-R/Rw
218
Transportation Remarks
219
Toner Transport Tube Cleaning
219
Service Tables
221
General Cautions
223
Drum
223
Drum Unit
223
Transfer Belt Unit
224
Scanner Unit
224
Laser Unit
224
Charge Corona
225
Development
225
Cleaning
226
Fusing Unit
226
Paper Feed
226
Used Toner
226
Service Program Mode
227
Service Program Mode Operation
227
Service Program Mode Tables
234
Test Pattern Printing (Sp2-902)
287
Input Check
288
Output Check
296
System Parameter and Data Lists (Smc Lists)
298
Memory All Clear (Sp5-801)
298
Software Reset
299
System Setting and Copy Setting (up Mode) Reset
299
Pm Counter
300
Pm Counter Access Procedure
300
Program Download
306
Nvram Data Download
308
Language Data Download
309
Stamp Data Download
309
User Program Mode
310
How to Enter and Exit up Mode
310
Up Mode Table
310
Image Quality Setting by up Mode
313
Leds
319
Test Points/Dip Switches/Leds
320
Dip Switches
320
Test Points
321
Fuses
321
Variable Resistors
321
Special Tools and Lubricants
322
Special Tools
322
Lubricants
322
Preventive Maintenance
323
Preventive Maintenance Schedule
325
Pm Parts
325
Replacement and Adjustment
329
Exterior
331
Front
331
Right
332
Left
333
Rear
334
Document Feeder
335
Cover Removal
335
Feed Unit Removal and Separation Roller Replacement
337
Feed Belt Replacement
338
Pick-Up Roller Replacement
339
Sensor Replacement
340
Transport Belt Replacement
344
Motor Replacement
345
Feed-In Clutch Replacement
347
Scanner Unit
348
Exposure Glass
348
Lens Block
349
Original Size Sensors
350
Exposure Lamp
351
Lamp Regulator
352
Optics Dust Filter
353
Scanner H
354
Scanner Motor
355
Scanner Drive Wires
356
Laser Unit
359
Caution Decal Locations
359
Ldb and Ld Filter Replacement
360
Polygon Mirror Motor Replacement
361
Laser Synchronization Detector Replacement
362
Drum Unit
363
Drum Unit Removal and Drum Replacement
363
Quenching Lamp Replacement
364
Grid Plate/Charge Corona Wire/Wire Cleaner Replacement
365
Drum Potential Sensor Replacement
367
Cleaning Blade/ID Sensor Replacement
368
Cleaning Brush Replacement
369
Pick-Off Pawl Replacement
370
Drum Filter Replacement
371
Opc Drum Change
371
Development and Toner Supply
373
Development Unit Removal
373
Developer Replacement
373
Development and Air Dust Filter Replacement
375
Development Entrance, Front, & Rear Side Seals
376
Toner Density Sensor Replacement
377
Toner Hopper Sensor Replacement
378
Development Motor Replacement
379
Development Roller Shaft Cleaning
380
Transfer Belt Unit
381
Transfer Belt Unit Removal/Installation
381
Transfer Belt Replacement
383
Transfer Belt Cleaning Blade Replacemtnt
385
Transfer Belt Bias Brush Replacement
386
Paper Feed
387
Paper Tray Removal
387
Paper Feed Roller Replacement
390
Paper Feed and Vertical Transport Clutch, and Tray Lift, Paper Feed, and Paper End Sensor Removal
391
Rear Fence Return Sensor Replacement
394
Rear Fence Hp Sensor Replacement
395
Right 1St Tray Paper Sensor Replacment
396
Bottom Plate Lift Wire Replacement
397
Paper Dust Remover Cleaning
399
Registration Sensor Cleaning
400
Universal Tray Size Switch Replacement
401
1St Tray Lift Motor Removal
402
Lift Motor Removal (2Nd & 3Rd Trays)
403
Paper Feed Motor Removal
404
Relay Motor, Upper Relay Clutch, Lct Relay Clutch Removal
405
Registration Motor Removal
406
Copier Feed Unit/Development Fan Motor Removal
407
Lct Relay and Relay Sensor Removal
408
Tandem Feed Tray Paper Size Change
409
Mechanical Side Registration Adjustment
412
Fusing Unit
413
Oil Supply & Cleaning Web Unit Removal
413
Hot Roller Unit Removal and Pressure Roller Replacement
414
Hot Roller Replacement
416
Oil Supply & Cleaning Web Replacement
418
Web Cleaning Roller Replacement
420
Hot Roller Stripper Replacement
421
Pressure Roller Stripper Replacement
422
Pressure Roller Cleaning Roller Replacement
423
Fusing and Exit Unit Removal
424
Fusing Pressure Adjustment
425
Paper Exit/Duplex Unit
426
Exit Sensor Replacement
426
Duplex Unit Removal
427
Duplex Unit Inner Cover Removal
428
Jogger Motor Replacement
429
Duplex Unit Clutch Replacement
430
Duplex Entrance Sensor Replacement
431
Duplex Transport Sensor 1/Duplex Inverter Sensor
433
Toner Bank
434
Waste Toner Bottle Removal
434
Toner Bank Unit Removal
435
Toner Supply Motor and Toner Supply Motor Sensor Removal
438
Access to Inside the Toner Bank
439
Boards and Other Items
440
Sicu Board
440
Hard Disk Drive
441
Bcu Board
442
I/O Board
443
Psu
444
Charge/Grid/Bias Power Pack
445
Fusing/Duplex Motor Replacement
446
Drum Motor Replacement
447
Copy Image Adjustment: Printing/Scanning
448
Printing
448
Parallelogram Image Adjustment
451
Scanning
453
Adf Image Adjustment
454
Touch Screen Calibration
455
Troubleshooting
457
Service Call Conditions
459
Sc Code Descriptions
460
Electrical Component Defects
495
Sensors
495
Switches
499
Blown Fuse Conditions
500
Firmware History
501
A294 / A295 Firmware Modification History
509
3 ,000-Sheet Finisher B302
519
Overall Machine Information
519
Specifications
519
Mechanical Component Layout
521
Electrical Component Description
522
Drive Layout
524
Detailed Descriptions
525
Tray and Stapler Junction Gate
525
Paper Pre-Stacking
526
Jogger Unit Paper Positioning
527
Stapler Unit Movement
528
Stapler
530
Feed-Out
532
Shift Tray Up/Down Movement
533
Shift Tray Side-To-Side Movement
534
Punch Unit Drive
535
Punch Waste Collection
536
Jam Conditions
537
Service Tables
538
Dip Switches
538
Test Points
538
Fuses
538
Replacement and Adjustment
539
Cover Replacement
539
Positioning Roller Replacement
542
Alignment Brush Roller Replacement
543
Sensor Replacement
544
Stack Height 1, 2 and Exit Guide Open Sensor
544
Upper Tray Paper Limit and Exit Sensor
545
Shift Tray Exit Sensor
546
Entrance and Stapler Tray Entrance Sensors
547
Pre-Stack Stopper Sensor
548
Staple Waste Hopper Sensor
549
Stapler Rotation Hp and Stapler Return Sensors
550
Stapler Removal
551
Punch Position Adjustment
552
Rom History
553
Firmware Modification History
553
Large Capacity Tray B303
555
Overall Machine Information
557
Specifications
557
Mechanical Component Layout
558
Drive Layout
561
Detailed Descriptions
562
Paper Feed
562
Pick-Up and Feed
563
Overview
563
Pick-Up and Feed
564
Separation Roller Release
565
Paper Lift
566
Tray Detection
566
Lift Mechanism
566
Lift Sensor
567
Paper Size Detection
568
Paper End Detection
569
Replacement and Adjustment
570
Exterior Cover Removal
570
Inner Cover Removal
571
Paper Feed Roller Replacement
572
Lct Motor Replacement
573
Relay Sensor Replacement
574
Paper Height Sensor and Paper Size Switch Replacement
575
Main Drive Belt Replacement
576
Side Registration Adjustment
577
A3/Dlt Tray Kit B331
581
Overall Machine Information
581
Specifications
581
Detailed Descriptions
582
Sectional Description
582
Replacement and Adjustment
583
Bottom Plate Lift Wire Replacement
583
Differences from the A294 I/A295 I Models
585
Detailed Section Descriptions
587
Toner and Developer
587
Newly Added: Development Suction Motor and Sucked Toner Collection Bottle
587
Development Unit
588
Toner Bank Unit
589
Cleaning Unit
589
Fusing Unit
590
New Additions to Transfer Current Control
591
Charge Corona Unit
592
Electrical Components
592
Software
593
Service Tables
595
Service Program Mode
595
Preventive Maintenance Schedule
599
Pm Parts
599
Troubleshooting
600
Service Call Conditions
600
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