A. Cassette Pick-up Roller ..... 3-11
B. Cassette Feed Roller.......... 3-11
C. Separation Roller .............. 3-12
D. Multi-purpose Tray
Pick-up Roller ................... 3-12
E. Separation Pad .................. 3-13
F. Multi-purpose Tray Unit .... 3-14
G. Registration Unit............... 3-15
H. Feed Roller Unit................ 3-17
I. Feed Guide Unit ................ 3-18
J. Delivery Unit..................... 3-18
IV. EXPOSURE SYSTEM............... 3-19
A. Laser/Scanner Unit ........... 3-19
V. ELECTROSTATIC IMAGING/
DEVELOPING/CLEANING
SYSTEM ................................. 3-20
A. EP-52 Cartridge................. 3-20
B. Transfer Charging Roller ... 3-21
VI. FIXING SYSTEM ..................... 3-23
A. Fixing Unit ........................ 3-23
VII. PRINTED CIRCUIT BOARDS ... 3-27
A. Engine Controller PCB....... 3-27
B. Paper Size Detection PCB.. 3-28
C. Video Controller PCB......... 3-29
D. Adapter PCB ...................... 3-30
VIII.PAPER FEEDER...................... 3-31
IX. ENVELOPE FEEDER ............... 3-35
X. DUPLEXING UNIT ................... 3-39
CHAPTER 4 TROUBLESHOOTING
I. PREFACE ............................... 4-1
A. Malfunction Diagnosis
Flowchart .......................... 4-1
B. Initial Check ..................... 4-4
C. Test Print.......................... 4-5
II. IMAGE DEFECTS.................... 4-10
III. PAPER JAMS
TROUBLESHOOTING .............. 4-16
IV PAPER TRANSPORT
TROUBLESHOOTING .............. 4-22
V. MALFUNCTION
TROUBLESHOOTING .............. 4-24
VI. MALFUNCTION STATUS
TROUBLESHOOTING .............. 4-25
VII. MEASUREMENT AND
ADJUSTMENT ........................ 4-34
A. Mechanical Adjustment ..... 4-34
B. Electrical Adjustment........ 4-38
C. Variable Resisters, LEDs,
Test Pins, Jumpers and
Switches on PCBs.............. 4-40
VIII.MAINTENANCE AND
SERVICING............................. 4-43
A. Periodic Replacement
Parts ................................ 4-43
B. Expected Service Life of
Consumable Parts.............. 4-43
C. Periodic Service ................ 4-43
D. Cleaning Points for
Servicing .......................... 4-44
E. Standard Tools .................. 4-46
F. Special Tools ..................... 4-47
G. Printer driver tester .......... 4-48
H. Solvents and Oil List......... 4-55
IX. LOCATION OF ELECTRICAL
PARTS.................................... 4-56
A. Switches............................ 4-56
B. Sensors ............................. 4-58
C. Clutches/Solenoids ........... 4-60
D. Motors/Others................... 4-62
E. PCBs.................................. 4-64
F. Connectors........................ 4-66
