3.2 Screws used in the printer ……………………………………… 3-2
3.3 Cover ……………………………………………………………… 3-3
3.3.1 Left/Right cover ……………………………………………… 3-3
3.3.2 Rear bracket ………………………………………………… 3-3
3.3.3 Cover-open ………………………………………………… 3-4
3.3.4 Top/Front cover ……………………………………………… 3-4
3.4 Main PBA ………………………………………………………… 3-5
3.5 SMPS/HVPS board ……………………………………………… 3-6
3.6 Fuser unit ………………………………………………………… 3-7
3.7 LSU ………………………………………………………………… 3-8
3.8 Drive unit ………………………………………………………… 3-9
3.9 Step motor ………………………………………………………… 3-10
3.10 Pick up roller …………………………………………………… 3-11
4.1 Alignment and Adjustments ……………………………………… 4-1
4.1.1 Control Panel ………………………………………………… 4-1
4.1.2 Understanding the LEDs …………………………………… 4-2
4.1.3 JAM Removal ……………………………………………… 4-3
4.1.4 Printing a report ……………………………………………… 4-5
4.1.5 Periodic Defective Image …………………………………… 4-8
4.1.6 Firmware upgrade …………………………………………… 4-9
4.1.7 Using the smart panel program …………………………… 4-10
4.2 Troubleshooting…………………………………………………… 4-12
4.2.1 Procedure of Checking the Symptoms …………………… 4-12
4.2.2 Bad discharge ……………………………………………… 4-15
4.2.3 Malfunction …………………………………………………… 4-19
4.2.4 Bad image …………………………………………………… 4-24
chapter 4 Alignment and Troubleshooting
Contents
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