ii
CHAPTER III ELECTRICAL SYSTEM............................................III-1
1. MAIN PCB......................................................................................................III-1
1.1. Outline................................................................................................................................III-1
1.2. Video Controller Circuit ......................................................................................................III-2
1.3. Engine Controller Circuit ....................................................................................................III-6
2. PAPER FEED DRIVE CIRCUIT.....................................................................III-7
3. DISPLAY CIRCUIT ........................................................................................III-9
3.1 Outline.................................................................................................................................III-9
3.2 Operation ............................................................................................................................III-9
4. LOW-VOLTAGE POWER SUPPLY ASSY ..................................................III-10
4.1 Outline...............................................................................................................................III-10
4.2 Protection Functions .........................................................................................................III-10
5. HIGH-VOLTAGE POWER SUPPLY ASSY..................................................III-12
5.1 Outline...............................................................................................................................III-12
5.2 Operation of the Components of the High-Voltage Power Supply Assy...........................III-12
CHAPTER IV MECHANICAL SYSTEM ..........................................IV-1
PRINTER DISASSEMBLING PROCEDURE..................................................... IV-2
PRINTER BODY................................................................................................ IV-3
1.1 Configuration.................................................................................................................... IV-3
1.2 Control Panel Unit............................................................................................................ IV-3
1.3 Toner Cartridge Lid .......................................................................................................... IV-3
1.4 Side Cover L .................................................................................................................... IV-4
1.5 Font Cover Assy .............................................................................................................. IV-5
1.6 Upper Cover Assy, Rear Cover Assy............................................................................... IV-5
1.6.1 Upper cover assy, rear cover assy .......................................................................... IV-5
1.6.2 Changeover guide, jam remove cover..................................................................... IV-7
1.7 Side Cover R.................................................................................................................... IV-7
1.8 DC Fan Motor................................................................................................................... IV-8
1.9 Main PCB......................................................................................................................... IV-9
1.10 Laser Unit....................................................................................................................... IV-11
1.11 Cartridge Stopper Assy.................................................................................................. IV-12
1.12 Paper Feed Chassis Unit............................................................................................... IV-13
1.13 Separation Pad Assy...................................................................................................... IV-15
1.14 MP PE Sub Actuator ...................................................................................................... IV-15
1.15 P Feed /Size-SW PCB Assy .......................................................................................... IV-16
1.16 Size-Switch Spring......................................................................................................... IV-16
1.17 Regist Sensor Actuator.................................................................................................. IV-16
1.18 PE Sensor Actuator MP ................................................................................................. IV-17
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