Preface; Malfunction Diagnosis Flowchart - Canon LBP-1760 Service Manual

I. PREFACE
A. Malfunction Diagnosis Flowchart
The malfunctions that occur in the printer fall into six main factors; "image defects," "paper
jams," "paper transport troubleshooting," "power supply failure," "malfunction troubleshooting,"
and "malfunction status troubleshooting."
If a malfunction occurred in the printer, a service technician is to recognize the causes and
to clear the problem according to the troubleshooting procedure for each malfunction.
Make sure the following points at the execution of troubleshooting.
• Be sure that the connector has no poor contact when measuring the voltage at the specified
terminal of the connector.
• Before handling PCBs, be sure to touch a metal part of the printer to discharge static elec-
tricity, as it can cause damage to the PCBs.
• The laser/scanner unit cannot be adjusted in the field, so do not attempt to disassemble it.
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