A. Adf Self Diagnosis - Canon DADF-B1 Service Manual

TROUBLESHOOTING
I. STANDARDS AND ADJUST-
MENTS ....................................... 5-1
A. Mechanical System ............... 5-1
B. Electrical System ................... 5-4
II. TROUBLESHOOTING................ 5-9
A. Troubleshooting
Malfunctions ........................ 5-10
III. ARRANGEMENT OF THE ELEC-
TRICAL PARTS ....................... 5-12
A. Motors, Solenoids, and
Sensors ............................... 5-12
B. PCBs ................................... 5-14
COPYRIGHT © 1999 CANON INC. CANON DADF-B1 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 5
IV.
V.
VI. SELF DIAGNOSIS .................... 5-32
VARIABLE RESISTORS (VR),
LIGHT-EMITTING DIODES, AND
CHECK PINS BY PCB ............. 5-15
A. ADF Controller PCB ............ 5-15
B. Sensor PCBs ....................... 5-16
C. Indicator PCB ...................... 5-18
SERVICE MODE AND DIP
SWITCH ................................... 5-19
A. Outline ................................. 5-19
B. Service Mode....................... 5-20
C. Using the DIP Switch ........... 5-28
A. ADF Self Diagnosis ............. 5-32