Ricoh FW830, Service Manual

Page: 201 / 227

10.5 ID SENSOR VOLTAGE (Vsg) ADJUSTMENT
When:
1. Check Vsg at every call, and adjust Vsg if it is not within
the adjustment standard.
2. At replacement of the following parts:
•
ID sensor
•
Drum
•
RAM on the main board.
3. A toner supply problem occurs.
Purpose: To make sure that the ID sensor works correctly.
Adjustment
Standard:
Vsg = 4.0
±
0.1 volts
Perform: SP #33
How:
Change the light intensity of the ID sensor LED by VR104.
The Vsg voltage is displayed on the operation panel.
1. Turn off the main switch and clean the following parts:
Item No. Section Method
(1)
Optics (exposure glass, fiber optics
array) Damp cotton and dry soft cloth
(2) ID sensor Dry cloth or blower brush
(3)
Corona wires (charge, transfer, and
separation) and casing Dry cloth
(4) QL, PTL, Dry cloth or blower brush
2. Remove the middle right cover.
3. Turn on the main switch.
4. Turn on DPS101-8 on the main board to enter the SP mode.
5. Select SP#33 (See Service Program Mode Access Procedure) and press
the Copy Exit Way key.
6. Check Vsg. Adjust Vsg by turning VR104 on the main board [A] if Vsg is
not within the adjustment standard.
[A]
31 December 1992 COPY QUALITY ADJUSTMENT
5-61