Sharp Z-21 Service Manual page 26

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Simulation No. and function
Lead edge image loss adjustment
Copy lamp manual normal range
brightness setting
AE gain setting (Auto)
AE gain setting (Manual)
@
For the actual adjustment procedure,
refer to [10] ADJUSTMENTS.
<Display at total counter read>
The display means as shown below:
Value
0
1
2
3
4
5
6
7
8
9
Entering the simulation
Short the main PWB pins (JP210-JP211), turn on the power, and the misfeed indicator will
blink. Then the four adjustment and settings shown on the left. Refer to page 26.
<Lead edge image loss adjustment>
Turn the VR202 on the main PWB, so the misfeed indicator will light (from blinking
constantly on state). Under this state, the adjustments are allowed. When the VR202 is turned
clockwise, the lead edge image loss becomes smaller.
When the VR202 is turned counterclockwise, the lead edge image loss becomes greater.
When the EXPOSURE key is pressed after completion of the setting, the set value is
established and automatically stored. The misfeed indicator goes off.
<Copy lamp manual normal range brightness setting>
When the misfeed indicator goes off, the TD cartridge replacement indicator blinks. Press the
EXPOSURE key and turn the VR202, and the misfeed indicator will light up (from blinking),
allowing the adjustment. When the VR202 is turned clockwise, the brightness is increased.
When the VR202 is turned counterclockwise, the brightness is decreased.
After completion of the setting, before pressing the EXPOSURE key, place a white paper on
the table glass and press the EXPOSURE key. The set value is established and stored, and
the TD cartridge replacement indicator goes off.
<AE gain setting (auto)>
When the TD cartridge replacement indicator goes off, the LIGHT exposure indicator lights up.
At the same time, the copy lamp lights up to set the AE (auto exposure) gain.
After completion of AE (auto exposuse) gain, the copy lamp and the LIGHT exposure indicator
go off and the exposure AUTO lamp blinks.
– 24 –
Content
LED display
TS
A
TS
A
TS
A
TS
A
TS
A
TS
A
TS
A
TS
A
TS
A
TS
A
READY indicator
OFF= Digit of ten
Blink
Light
ON= Digit of thousands
Blink= Digit of hundred
Execution of the function
thousands
to

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