Canon 1000 Service Manual page 744

7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
Code
• Video controller PCB (faulty)
• Laser unit (faulty)
• Laser intensity (adjustment fault)
• Photosensitive drum (faulty)
• Scanner (faulty)
• Potential measurement unit
(faulty)
• HVDC (faulty)
E061
• Potential measurement unit
(faulty)
• DC controller PCB (faulty)
• Potential measurement unit
(faulty)
• HVDC (faulty)
• Video controller PCB (faulty)
• Laser unit (faulty)
• Laser shutter (faulty)
• Scanner (faulty)
• Environment sensor (faulty)
• Photosensitive drum (faulty)
• Photosensitive drum (poor
grounding)
7-308
COPYRIGHT © 2001 CANON INC.
Cause
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
Description
xx30 The measurement of VD1 is 400 V or
higher.
xx31 The measurement of VD1 is 200 V or
lower.
xx32 The measurement of VD2 is 800 V or
higher.
xx33 The measurement of VD2 is 500 V or
lower.
xx34 The measurement of VL1 is 200 V or
higher.
xx35 The measurement of VL2 is 400 V or
more.
xx36 The measurement of VL2 is 0 V or
lower.
xx50 The difference between the computation
value of VD measured previously and
the computation value of VL measured
currently is 30 V or more.
xx51 The difference between the computa-
tion value of Vg measured previously
and the computation value of Vg
measured currently is 30 V or more.
xx52 The computation value of V00 is the
upper limit value (950 v) or higher.
xx53 The computation value of V00 is the
lower limit value (325 V) or lower.