Olivetti d-Copia 200D, Service Manual

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(2) Perform the adjustment in each mode.
1) Execute SIM 46-1.
2) Select the mode to be adjusted with the exposure mode select
key. Set the exposure level to 3 for all adjustment. (Except for
the auto mode.)
3) Make a copy.
Check the adjustment level (shown in the above table) of the
exposure test chart (Olivetti Gray Scale).
(When too bright): Decrease the value displayed on the copy
quantity display.
(When too dark): Increase the value displayed on the copy quan-
tity display.
∗
The value can be set in the range of 1 - 99.
3. High voltage adjustment
A. Main charger (Grid bias)
Note:
• Use a digital multi meter with internal resistance of 10M
Ω
or
more measurement.
• After adjusting the grid LOW output, adjust the HIGH output. Do
not reverse the sequence.
Procedures
1) Set the digital multi meter range to DC700V.
2) Set the positive side of the test rod to the connector CN11-3
(GRID) of high voltage section of the power PWB and set the
negative side to the frame ground (power frame).
3) Execute SIM 8-2. (The main charger output is supplied for 30
sec in the grid voltage HIGH output mode.)
4) Adjust the control volume (VRG1) so that the output voltage is
580 ±12V.
B. DV bias check
Procedures
1) Set the digital multi meter range to DC500V.
2) Set the positive side of the test rod to the connector CN-10-1
(DV BIAS) and set the negative side to the frame ground
(power frame).
3) Execute SIM 8-1 to output the developing bias for 30sec, and
check that the output is –400 ± 8V.
Adjustment
mode
Exposure mode
display lamp
Olivetti gray chart
adjustment level
Auto mode Auto lamp ON "3" is slightly copied.
Manual mode Manual lamp ON "3" is slightly copied.
Photo mode Photo lamp ON "3" is slightly copied.
Manual T/S
mode Manual lamp/Photo lamp
ON "3" is slightly copied.
Auto T/S mode Auto lamp/Photo lamp ON "3" is slightly copied.
Olivetti Gray Scale adjustment level
Non toner
save
mode
Toner
save
mode
(1) (2)
Mode select key/display lamp
Exposure level select key/
display lamp
(1)
(2)
1 10 W 2 3 4 5 6 7 8 9
Slightly copied.
Not copied.
1 10 W 2 3 4 5 6 7 8 9
Slightly copied.
Not copied.
Note: • A digital multi meter with internal resistance of 1G
Ω
must
be use for correct check.
• The adjustment volume is locked, and no adjustment can
be made.
VRG1
VRDV
Y109500-5 Service Manual 9-5