Service manual

xii DECcolorwriter 1000
Figure 8-14 Removing the bail roller assembly 8-16
Figure 8-15 Removing the thermal head 8-18
Figure 8-16 Removing the drum belt and pulley 8-19
Figure 8-17 Removing the front idlerþroller 8-20
Figure 8-18 Removing the drum's right end bushing 8-21
Figure 8-19 Removing the drum 8-22
Figure 8-20 Removing the paper-feedþmotor 8-23
Figure 8-21 Removing the drum motor 8-24
Figure 8-22 Removing the transfer roll take-up gear 8-25
Figure 8-23 Removing the transfer roll take-up motor 8-26
Figure 8-24 Freeing the thermal head drive belt and thermal head lift motor bracket 8-27
Figure 8-25 Removing the thermal head liftþmotor 8-28
Figure 8-26 Removing the paper-feed circuit board 8-30
Figure 8-27 Removing the paper-passþsensor 2 8-31
Figure 8-28 Removing the tray sensors circuit board 8-32
Figure 8-29 Removing the transfer roll low sensor 8-33
Figure 8-30 Removing the paper clamp sensor 8-34
Figure 8-31 Disconnecting the wiring harnesses and removing the card cage 8-35
Figure 8-32 Removing the card cage and power supply 8-36
Figure 8-33 Removing the power supply circuit board 8-38
Figure 8-34 Disconnecting the wiring harnesses 8-39
Figure 8-35 Removing the engine control board 8-40
Figure 8-36 Removing the interconnectþboard 8-41
Figure 8-37 Removing the I/O board 8-42
Figure 8-38 Removing the image processor board 8-43
Figure 8-39 Installing the RAM SIMM on the image processor board 8-44
Figure 8-40 Installing the font SIMM on the image processor board 8-45
Figure 9-1 Engine control board DIP switches 9-2
Figure 9-2 Tensioning the drum belt 9-11
Figure 9-3 Adjusting the thermal head pitch 9-17
Figure 9-4 Setting the paper clamp adjustment 9-19
Figure A-1. The printer exterior FRUs A-3
Figure A-2. Exploded view of the printer A-7
Figure B-1. Inspection/check test pattern showing samples of defective printing B-1
Figure B-2. Saturation dither pattern B-2
Figure B-3. Wrinkle 2 pattern showing wrinkle B-3