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(2) Operation procedure
• Be sure to set the drum counter (08-401) to "0" when you have replaced the drum with a new one.
• Regarding the main charger grid and developer bias output values from the high-voltage trans-
former, connect a digital tester following (1) and then, make adjustment using the following proce-
dure.
Sequence of Operation, Pattern 1
[0] [5]
[PWR]
1
[Digital Keys]: Enter code.
[START]
[Up] [Down] icon: Adjust the "YYY" value so that the adjustment value of the digital tester satisfies
the value indicated in the table.
[SET] or [INTERRUPT]: The "YYY" value after adjustment is recorded to NVM.
If you switch to
another adjustment
mode, go to
[0] [9]
: Exit adjustment mode.
Note: The "adjustment value" indicates the output voltage of the DA converters (IC47, 148)
on the logic PC board, and conforms to the following relationship:
output voltage = ( adjustment value + 1) ÷ 256 × 5V
<Display Messages>
100%
TEST MODE
Current
adjustment value
YYY
TEST MODE
ZZZ
100%
1
.
TEST MODE
1 - 59
A
A4
Code No.
XXX
A4
A
A4
ADJUSTMENT
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Table of Contents
Troubleshooting
