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SERVICE PROGRAM MODE
7. Replace the OPC drum with a new one.
NOTE: Since the drum counter for the process control has been
cleared, the old drum cannot be used. If the old drum is used
after all memory is cleared, a dirty background and/or toner
scattering will appear on copies sooner or later because proper
V
correction will not be applied to the drum.
G
8. Clean the optics, sensors, and inside of the machine if necessary.
9. If the high voltage supply board - CTBG and/or - D is not the original one,
do the following:
1) Clean the corona unit casings and replace the corona wires with new
ones.
2) Enter to the SP mode by the access procedure 2.
3) Enter the grid voltage correction data in SP62 referring to the label on
the high voltage supply board - CTBG.
4) Adjust the transfer corona current if the high voltage supply board -
CTBG is not the original one.
5) Adjust the separation corona current if the high voltage supply board -
D is not the original one.
10. Enter the SP mode by access procedure 2. (While pressing both "1" and
"3" on the operation panel number keys, turn on the main switch)
11. Enable optional equipment operation by SP71 (sorter) and SP72 (paper
tray unit) as necessary.
12. Perform the following SP modes:
SP66: Drum initialize
SP54: Auto Vsg/Vlg adjustment
SP48: Exposure lamp voltage adjustment
SP56: Auto ADS gain adjustment
13. Check copy quality and the paper path and do the necessary
adjustments.
4-2
10 July 1992
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