Troubleshooting Malfunctions (Other Than Service Error); Power Is Absent; The Lcd Fails To Operate - Canon SmartBase 1270D Service Manual

4.2 Troubleshooting Malfunctions (other than service error)

4.2.1 Power is absent.

Power plug
1) Is the power plug connected to the power outlet?
NO:
Power cord
2) Is the power cord connected to the machine? Moreover, is the
NO:
Source power
3) Is the rated voltage present at the power outlet?
YES: Replace the power supply PCB. If the fuse has blown, find and re-
NO:

4.2.2 The LCD fails to operate.

Connector
1) Is the connection of the following connectors normal: J401 and
NO:
LCD
2) Try replacing the LCD. Is the problem corrected?
YES: End.
Control panel PCB/Image processor PCB
3) Try replacing the control panel PCB. Is the problem corrected?
YES: End.
NO:
COPYRIGHT © 2002 CANON INC.
Connect it firmly.
power cord normal?
Connect it. If it is faulty, replace it.
move the cause.
The problem is not of the machine. Advise the user.
J402 on the control panel PCB; J315 on the image processor PCB;
J4020 on the LCD?
Connector them firmly. If the flexible cable has a scratch, replace
it.
Replace the image processor PCB.
2000 2000 2000 2000 CANON SmartBase PC1210D/1230D/1270D REV. 1 MAR. 2002
CHAPTER 7 TROUBLESHOOTING
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