FC-22 TROUBLESHOOTING 4 - 66 January 2000 © TOSHIBA TEC
Cause/Defect area
Step
Check items Measures
Exposure lamp
Lamp regulator
Scanner
Bedewing of scanner and
drum
Main charger
High-voltage transformer
(Main charger)
Harness for SCM, SIC, IMC
and LGC boards
1 Does exposure lamp light?
2 Foreign matter in optical path?
3 Scanner or drum bedewed?
4 Main charger securely installed?
5 Main charger wire open-circuited?
6 High-voltage transformer output defective?
7 Connectors securely connected?
Any open-circuited harness between
boards?
Check lamp terminal contact.
Check circuit and replace thermostat if it is not alive.
Replace defective lamp regulator if any.
Remove it.
Clean mirrors, lens and drum.
Keep power cord plugged so that damp heater can
work.
Re-install it securely.
Replace it.
Adjust output and correct circuit, or replace high-
voltage transformer.
Re-connect connectors securely.
Replace harness.
(10) Solid copy
Feeding direction
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