Canon CP660 Service Manual page 320

CHAPTER 10 TROUBLESHOOTING
13 E066
Cause Step
Connector 1
(temperature/
humidity sensor)
Temperature/ 2
humidity sensor
14 E100
Cause Step
Connector 1
(laser driver
signal line)
Connectors 2
(BD line)
Laser scanner 3
unit
10-38
COPYRIGHT © 1999 CANON INC.
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Checks
Are the connectors J801 on the tem-
perature/humidity sensor and con-
nector J206 on the DC controller
PCB connected securely?
Replace the temperature/humidity
sensor. Is the problem corrected?
Checks
Are the connector J1001 on the
laser driver PCB and connector
J205 on the DC controller PCB con-
nected securely?
Are the connector J2 on the BD
PCB, relay connector J40, and con-
nector J211 on the DC controller
PCB connected securely?
Is the voltage between the connec-
tors J211-1 (+5 V) on the DC con-
troller PCB and J211-3 (GND) 5 V
immediately after the printer unit is
turned on?
Yes/No
NO
YES
NO
Yes/No
NO
NO
YES
NO
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
Connect the connec-
tors securely.
End.
Replace the DC con-
troller PCB.
Action
Connect the connec-
tors securely.
Connect the connec-
tors securely.
Replace the laser
scanner unit.
Replace the DC con-
troller PCB.