Adjusting Image Position Sensor Strength And Side-To-Side Registration; Cis Image Position Adjustment: Led Strength (Lcit) - Ricoh B234 Service Manual

Procedure 1
1.5.3 ADJUSTING IMAGE POSITION SENSOR STRENGTH AND
SIDE-TO-SIDE REGISTRATION
The CIS inside the LCT must be calibrated. The two CIS assemblies inside the
copier are calibrated at the factory. This is not possible for the LCT because the
LCT and copier are not together at the factory.
This is a common procedure that must be done for either LCT (B832 or B834).

CIS Image Position Adjustment: LED Strength (LCIT)

1. Turn OFF the main power switch.
2. Disconnect the LCT from the mainframe.
3. With the LCT [A] separated from the
mainframe, reconnect the LCT cable
to the mainframe.
4. Turn ON the main power switch.
5. Insert one sheet of plain white paper
[B] in the paper path.
6. Make sure that the paper covers the
entire area below the image position
sensor (CIS) [C].
7. Enter the SP mode and do SP1910
002 (CIS Image Position Adjustment:
LED Strength - LCT). This calibrates
the amount of light to be emitted from
the CIS.
8. Do SP1909 002 (CIS Image Position Adjustment: PWM After Adjustment -
LCT).
• If the displayed value is between 20 (14h) and 40 (28h), the CIS is calibrated
successfully. (The display is in hexadecimal code.)
• If the value is outside this range, do SP 1910 002 and 1909 002 again. If the
value does not come between 20 and 40, the CIS may be defective.
9. Exit the SP mode and turn OFF the main power switch.
10. Remove the paper from the machine.
11. Reattach the LCT to the side of the copier.
12. Turn ON the main power switch.
SM
[B]
[C]
1-49 B234/B235/B236/D101/D102/D103
LCIT RT5000 (B832)
[A]
B834I125.WMF