Toshiba e-STUDIO556 Service Manual page 246

8.4.7 Blank copy
Defective area
Bias supply connector
High-voltage transformer
(Transfer charger,
Developer bias)
Developer unit
Drum
CCD, SLG, SYS, LGC
boards and harnesses
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Fig. 8-7
Step Check items
1 Is the connector inserted properly?
2 Is the high-voltage transformer
output defective?
3 Are the connectors of the high-
voltage harness securely connected?
Is the harness open circuited?
4 Is the developer unit installed
properly?
5 Do the developer sleeve and mixers
rotate?
6 Is the developer material smoothly
transported?
7 Is the drum rotating?
8 Are the connectors securely
connected?
Check if the harnesses connecting
the boards are open circuited.
8 - 245
Prescription
Insert the connector properly.
Replace the transformer.
Reconnect the harness securely.
Replace the high-voltage harness.
Check and correct the engaging
condition of the developer unit gears.
Check and fix the drive system of the
developer unit.
Remove the foreign matter from the
developer material.
Check the drive system of the drum.
Connect the connectors securely.
Replace the harness.
e-STUDIO556/656/756/856/557/657/757/857
ERROR CODE AND TROUBLESHOOTING
8