Samsung CLP-770ND - Maintenance and Disassembly Procedures; Alignment and Troubleshooting Guide

3.1 Precautions when replacing parts ……………………………… 3-1
3.1.1 Precautions when assembling and disassembling ……… 3-1
3.1.2 Preautions when handling PBA …………………………… 3-1
3.1.3 Releasing Plastic Latches ………………………………… 3-1
3.2 Replacing a Maintenance Parts ……………………………… 3-2
3.2.1 Fuser Unit …………………………………………………… 3-2
3.2.2 Pick up roller ………………………………………………… 3-2
3.3 General Disassembly …………………………………………… 3-3
3.3.1 Cover Unit …………………………………………………… 3-3
3.3.2 Front Cover Unit …………………………………………… 3-6
3.3.3 OPE Unit……………………………………………………… 3-7
3.3.4 HVPS Board ………………………………………………… 3-8
3.3.5 Main PBA …………………………………………………… 3-9
3.3.6 SMPS Board ………………………………………………… 3-9
3.3.7 Fuser Control Board ………………………………………… 3-10
3.3.8 HVPS sub board(AC Board) ……………………………… 3-10
3.3.9 LSU Unit ……………………………………………………… 3-11
3.3.10 SOLENOID and CLUTCH-FEED ………………………… 3-12
4.1 Alignment and Adjustments ……………………………………… 4-1
4.1.1 Control Panel ………………………………………………… 4-1
4.1.2 Understanding The Status LED …………………………… 4-2
4.1.3 Menu Overview ……………………………………………… 4-3
4.1.4 Tech Mode …………………………………………………… 4-7
4.1.5 Firmware Upgrade ………………………………………… 4-13
4.2 Troubleshooting…………………………………………………… 4-19
4.2.1 Procedure of Checking the Symptoms …………………… 4-19
4.2.2 Display Meassage Troubleshooting ……………………… 4-20
4.2.3 Feeding Problems and solutions ………………………… 4-29
4.2.4 Image Quality Problems and solutions …………………… 4-36
4.2.5 Common Problems and solutions ………………………… 4-42
4.2.6 Network problems and soltutions ………………………… 4-43
chapter 4 Alignment & Troubleshooting
Contents
chapter 3 Maintenance and Disassembly