8.2 SIDE-TO-SIDE EXPOSURE ADJUSTMENT
When:
The exposure is uneven side-to-side.
Purpose:
To maintain even exposure.
Adjustment
Standard:
The side-to-side variation of the gray scales on
the test chart should be less than one level.
How to Adjust:
Move the exposure adjustment plates.
How it works:
Changes the position of the adjustment plates to
make the light intensity from the exposure lamp
even across its length.
NOTE: Do not adjust the charge corona wire height to correct for uneven
image density on the copy.
If the following adjustment does not clear the problem, adjust the
wire height using the drum shoe. (See Charge Corona Current
Adjustment.)
1. Perform the light intensity adjustment (SP48) and the ADS adjustment
(SP56).
2. Place the OS-A4 test chart on the exposure glass and make a copy.
3. If the side-to-side variations of the gray scales are not within the
adjustment standard, turn off the main switch and remove the exposure
glass. (See Exposure Glass Removal.)
4. Position the adjusting plates [A] so that the copy image meets the
adjustment standard.
[A]
RE
P
L
ACE
M
E
NT
AND
ADJUS
T
M
E
N
T
FSM
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A151/A152
Summary of Contents for A151
Page 1: ...SERVICE MANUAL PN RCFM3213 A151 A152 A202 A203 RICOH GROUP COMPANIES ...
Page 2: ...SERVICE MANUAL A151 A152 A202 A203 RICOH GROUP COMPANIES ...
Page 3: ...A151 A152 A202 A203 FIELD SERVICE MANUAL PN RCFM3213 ...
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