Main Drive Section; Electrical Components - Ricoh JP5000 Service Manual

1 July, 1998 SERVICE REMARKS

4.1.6 MAIN DRIVE SECTION

1. Main Drive Adjustment
Special tools are needed for the adjustment. For details, see "6.11.2 Main Drive
Mechanism (Main Timing Belt)."

4.1.7 ELECTRICAL COMPONENTS

1. Main Processing Unit (MPU) and I/O Board
After replacing the MPU or I/O board, some adjustments are needed. See "6.3
MPU and I/O Board Replacement."
2. Main Processing Unit (MPU) and Power Supply Unit
To access the rear of the machine, the MPU and I/O board have to be moved out
of the way. See "6.4 MPU and PSU Opening Procedures."
3. Power Supply Unit
When replacing the power supply unit, be sure to adjust the voltage supplied to the
thermal head. See "6.7.6 Thermal Head Voltage Adjustment."
4. Program Update
To update the software in the flash ROM on the MPU, a special tool is needed. See
"4.5.4 Load Program (SP8-20)."
5. Sensor Adjustments
Adjustment is needed for the following sensors
1st drum master sensor
2nd drum master sensor
Master eject sensor
Master edge sensor
Master end sensor
For details, see the adjustment procedures for each sensor in section 6.
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