Printer Self Repair

Chapter Disassembly and Assembly 1

Hp Table of Contents

3.1 GENERAL INFORMATION_3-1

3.1.1 Precautions for Disassembly/Assembly...........................3-1

3.1.2 Tools......................................................3-1

3.1.3 Small Parts.................................................3-2

3.1.4 Service Checks after Repair....................................3-3

3.2 DISASSEMBLY AND ASSEMBLY_3-4

3.2.1 Removal ofthe Video Controller Section ..........................3-4

3.2.1.1 Video Controller Board (C108 MAIN) Removal ...............3-4

3.2.1.2 PCL5/RITech Upgrade Board (C82907* ROM-B) Removal.....3-5

3.2.1.3 Control Panel Removal.................................3-5

3.2.2 Housing Removal............................................3-6

3.2.2.1 Case Removal........................................3-6

3.2.2.2 Rear Frame Removal..................................3-7

f. 3.2.3 Disassemblingthe Engine.....................................3-8

3.2.3.1 Engine Controller Board (PWB-A) Removal .................3-8

3.2.3.2 Power Supply Unit (PWB-E) Removal......................3-9

3.2.3.3 Interlock Switch Removal..............................3-10

3.2.3.4 Printhead Unit Removal................................3-11

3.2.3.5 Paper Empty Sensor Removal..........................3-12

3.2.3.6 High Voltage Supply Board (PWB-F) Removal..............3-13

3.2.3.7 Main Motor (Ml) Removal..............................314

3.2.3.8 Fan Motor (M3) Removal ...............................315

3.2.3.9 Fusing Unit Removal..................................315

3.2.3.10 Fusing Unit Disassembly..............................316

3.2.3.11 Image Transfer Roller Removal .........................317

3.2.3.12 PaperTake-Up Roller Removal .........................318

List of Figures

Figure 3-1. Removing the Interface Cover ..............................3-4

Figure 3-2. Removing the 3 Screws...................................3-4

Figure 3-3. Pulling the Tab..........................................3-4

Figure 3-4. Removing the Video Controller Board ........................3-4

Figure 3-5. Removing the 3Screws...................................3-5

Figure 3-6. Removing the PCL5/RITech Upgrade Board...................3-5

Figure 3-7. Removing the Control Panel...............................3-5

Figure 3-8. Removing the Housing....................................3-6

Figure 3-9. Removing the Rear Frame.................................3-7

Figure 3-10. Removing the Engine Controller Board (PWB-A) ..............3-8

Figure 3-n. Removing the Power Supply Unit ..........................3-9

Figure 3-12. Removing the interlock Switch...................,........3-10

Figure 3-13. Removing the Printhead Unit.............................3-11

Figure 3-14. Removing the Paper Empty Sensor.......................3-12

Figure 3-15. Removing the High Voltage Supply Board..................3-13

Figure 3-16. Removing the Main Motor...............................3-14

Figure 3-17. Removing the Fan Motor...............................3-15

Figure 3-18. Removing the Fusing Unit..............................3-15

Figure 3-19. Disassembling the Fusing Unit-l........................3-16

Figure 3-20. Disassembling the Fusing Unit -2........................3-16

Figure 3-21. Removing the Image Transfer Assembly...................3-17

Figure 3-22. Removing the Image Transfer Roller......................3-17

Figure 3-23. Removing the Paper Take-Up Assembly...................3-18

Figure 3-24. Removing the Paper Take-Up Roller......................3-19

List of Tables

Table 3-1. Tools..................................................3-1

Table 3-2. Abbreviations Used for Screws..........................,..3-2

Table 3-3. Screw Types and Abbreviations............................3-2

Table 3-4. Checks after Repair......................................3-3

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