Canon LBP-2000 Service Manual page 5

CHAPTER 3 MECHANICAL SYSTEM
I. EXTERNALS AND CONTROLS .... 3 - 1
A. External Covers ...................... 3 - 1
B . Heat Discharging Fan .......... 3 - 4
C. Door Switch Assembly ......... 3 - 5
II. PCBS ..................................................... 3 - 8
A. Arrangement of the PCBs ... 3 - 8
B . Video Controller PCB ........... 3 - 8
C. DC Controller PCB ................. 3 - 1 2
D . Power Supply PCB
A s s e m b l y ................................... 3 - 1 4
III. DRIVE MECHANISMS .................... 3 - 1 5
A. Main Motor ............................... 3 - 1 5
B . Drive Assembly ....................... 3 - 1 6
IV. FEEDING MECHANISMS ............... 3 - 1 7
A. Cassette Pickup
A s s e m b l y ................................... 3 - 1 7
CHAPTER 4 TROUBLESHOOTING
I. INTRODUCTION ............................... 4 - 1
A. Troubleshooting
Chart ........................................... 4 - 1
B . Making Initial Checks .......... 4 - 4
C. Test Print .................................. 4 - 5
II. TROUBLESHOOTING IMAGE
FAULTS ................................................ 4 - 1 0
III. MEASURES AGAINST JAMS ....... 4 - 1 7
IV. FEEDING FAULTS ............................ 4 - 2 1
V. MALFUNCTIONS ............................... 4 - 2 3
VI. CORRECTING A FAULT STATUS
CONDITION ........................................ 4 - 2 5
VII. STANDARDS AND
ADJUSTMENTS ................................. 4 - 3 1
A. Making Mechanical
A d j u s t m e n t s ............................. 4 - 3 1
B . Making Electrical
A d j u s t m e n t s ............................. 4 - 3 2
C. Copying the Counter
R e a d i n g s .................................... 4 - 3 3
D . Variable Resistors (VR), Light-
Emitting Diodes (LED), Check
Pins, Jumpers, and Switches by
PCB .............................................. 4 - 3 4
I. GENERAL TIMING CHART ........... A-1
II. GENERAL CIRCUIT DIAGRAM ... A-3
III. LIST OF SIGNALS ............................ A-5
A. Inputs to and Outputs from
the DC Controller PCB ......... A-5
V.
VI. CHARGING/DEVELOPING/
VII. FIXING SYSTEM ............................... 3 - 2 7
VIII. PAPER FEEDER ............................... 3 - 3 4
VIII. MAINTENANCE AND
Flow
IX. ARRANGEMENT OF ELECTRICAL
APPENDIX
IV.
B . Multifeeder Tray Pickup
A s s e m b l y ................................... 3 - 2 0
C. Registration Roller
A s s e m b l y ................................... 3 - 2 3
EXPOSURE MECHANISMS ........... 3 - 2 5
A. Laser/Scanner Assembly .... 3 - 2 5
CLEANING MECHANISMS ............ 3 - 2 6
A. EP-65 Cartridge ...................... 3 - 2 6
B . Transfer Charging Roller .... 3 - 2 6
A. Fixing Assembly ..................... 3 - 2 7
A. External Covers ...................... 3 - 3 4
B . Pickup Assembly .................... 3 - 3 4
C. Drive Mechanism ................... 3 - 3 8
D . PCBs ............................................ 3 - 3 9
INSPECTION ...................................... 4 - 3 8
A. Periodically Replaced
Parts ............................................ 4 - 3 8
B . Durables ..................................... 4 - 3 8
C. Scheduled Servicing ............. 4 - 3 9
D . Points to Note for
Cleaning ..................................... 4 - 4 0
E . Standard Tools ........................ 4 - 4 1
F. Special Tools ............................ 4 - 4 2
G. Solvents and Oils ................... 4 - 4 2
PARTS .................................................. 4 - 4 3
A. Switches and Sensors .......... 4 - 4 3
B . Clutches, Solenoids, and
Motors ........................................ 4 - 4 5
C. O t h e r s ......................................... 4 - 4 7
D . PCBs ............................................ 4 - 4 8
E . C o n n e c t o r s ............................... 4 - 5 0
B . Inputs to and Outputs from
the Paper Feeder
Controller PCB ........................ A-9
MESSAGES TABLE .......................... A - 1 0
PREFACE
P - 3