Toshiba DP4500 Service Handbook page 197

(8) Solid copy
Defective area
Exposure lamp and
inverter
Scanner
Condensation of scanner
and drum
Main charger
High-voltage transformer
(Main charger)
CCD, SLG, SYS, LGC
boards and harnesses
DP4500/3500 TROUBLESHOOTING
Step Check Items
1 Does the exposure lamp light?
2 Is there any foreign object on the light path?
3 Is the scanner or drum condensed?
4 Is the main charger securely installed?
5 Check the main charger wire for breaks.
6 Is the output from the high-voltage trans-
former normal?
7 Are the connectors securely connected?
Check if the harnesses connecting the
boards are open-circuited.
Check if the connector contacts with the lamp ter-
minal.
Replace the defective inverter.
Remove it.
Clean the mirrors, lens and drum.
Keep the power cord plugged in.
Install it securely.
Replace it.
Adjust the output or replace the high-voltage
transformer.
Connect the connectors securely.
Replace the harness.
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Prescription
December 2000 © TOSHIBA TEC