Canon NP6512 Service Manual page 10

CHAPTER 11 TROUBLESHOOTING
I. MAINTENANCE AND
INSPECTION ............................ 11-3
A. Image Adjustment Basic
Procedure ........................... 11-3
B. Points to Note for
Servicing ............................ 11-4
II. STANDARDS AND
ADJUSTMENTS ....................... 11-5
A. Mechanical ......................... 11-5
B. ADF .................................. 11-30
C. Electrical ........................... 11-41
III. TROUBLESHOOTING IMAGE
FAULTS ................................... 11-52
A. Making Initial Checks ....... 11-52
B. Sample Image Faults ....... 11-56
C. Troubleshooting Image
Faults ................................ 11-57
IV. TROUBLESHOOTING
MALFUNCTIONS .................... 11-65
A. Troubleshooting
Malfunctions ..................... 11-65
V. TROUBLESHOOTING FEEDING
PROBLEMS ............................ 11-77
A. Copy Paper Jam ............... 11-77
A. GENERAL TIMING CHART ........ A-1
B. SIGNALS AND
ABBREVIATIONS ....................... A-3
C. GENERAL CIRCUIT DIAGRAM . A-5
D. DC CONTROLLER CIRCUIT
DIAGRAM ................................... A-7
E. ADF CONTROLLER CIRCUIT
DIAGRAM ................................. A-15
F. COMPOSITE POWER SUPPLY
CIRCUIT DIAGRAM .................. A-19
G. CONTROL PANEL CIRCUIT
DIAGRAM ................................. A-29
H. AE SENSOR CIRCUIT
DIAGRAM ................................. A-31
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B. Faulty Feeding .................. 11-80
VI. ARRANGEMENT AND FUNCTIONS
OF ELECTRICAL PARTS ....... 11-81
A. Sensors and Solenoids .... 11-81
B. Switches ........................... 11-82
C. Lamp, Heater, Motor, Etc. 11-83
D. PCBs ................................ 11-84
E. ADF .................................. 11-85
F.
VII. SERVICE MODE ..................... 11-88
A. Outline .............................. 11-88
B. Using Service Mode ......... 11-88
C. Adjustment Mode (30) ...... 11-91
D. Operation/Inspection
E. Machine Settings
F.
VIII. SELF DIAGNOSIS .................. 11-94
APPENDIX
I. SENSOR CIRCUIT
DIAGRAM ................................. A-32
J. NOISE FILTER CIRCUIT
DIAGRAM ................................. A-33
K. HIGH VOLTAGE CONTACT CIRCUIT
DIAGRAM ................................. A-34
L. BLANK EXPOSURE (front) CIRCUIT
DIAGRAM ................................. A-35
M. BLANK EXPOSURE (rear) CIRCUIT
DIAGRAM ................................. A-36
N. PRE-EXPOSURE CIRCUIT
DIAGRAM ................................. A-37
O. SPECIAL TOOLS ...................... A-38
P. SOLVENTS/OILS ...................... A-39
CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Variable Resistors (VR) and
Check Pins by PCB .......... 11-86
Mode (40) ......................... 11-92
Mode (50) ......................... 11-93
Counter Mode (60) ........... 11-93