Ricoh FT5034, Service Manual

Page: 44 / 139

11. ADS Voltage Adjustment
NOTE: 1. ADS voltage adjustment is required in the following cases.
1) Exposure lamp voltage adjustment.
2) Exposure lamp replacement.
3) When using ADS mode, abnormal copy image appears.
4) Main board replacement.
1. Place more then 5 sheets of A3 paper on the exposure glass.
2. Turn on DIP SW101-1 on the main board (free run mode).
3. Set SP mode (88) to "11". (Refer to the SP mode access procedure.)
4. Leave SP mode.
5. Access ADS input mode as shown.
Interrupt key
→
"4" key
→
Interrupt key
6. Press the Start key.
7. Adjust the ADS voltage to 3.0
±
0.06 V as displayed in the magnification indicator
of the operation panel by using VR102 on the main board.
NOTE: 1. Remove the 1st cassette from the copier to make full scans so that
the adjustment will be easy.
2. Adjusting VR102 should be done based on the data after 3 scans.
3. The ADS data is based on the data when the exposure lamp moves
from the home position to the center of exposure glass.
4. After the adjustment, be sure that the SP mode and DIP SW are
reset. (Set SP mode (88) to "10".)
5. When adjusting ADS voltage, set the image density mode to
"automatic image density mode".
- 43 -