Ricoh LDD250, Service Manual

Page: 263 / 459

SERVICE REMARKS
SM 5-3 C262/C265
Service
Tables
5.1.6 MAIN DRIVE SECTION
1. Main Drive Adjustment
Special tools are needed for the adjustment. For details, see "3.11.2 Main Drive
Mechanism (Main Timing Belt)".
5.1.7 ELECTRICAL COMPONENTS
1. ECU and I/O Boards
After replacing the ECU or I/O board, some adjustments are needed. See "3.5.5
ECU and I/O Board Replacement".
2. ACU, ECU, and Power Supply Unit
To access the rear of the machine, the ACU, ECU, and I/O board have to be
moved out of the way. See "3.5.1 ACU, ECU, 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 “3.7.15 Thermal Head Voltage Adjustment”.
4. Program Update
To update the machine’s software, an SD card is needed. Follow all cautions in the
procedures in the manual.
5. Sensor Adjustments
Adjustment is needed for the following sensors (SP6-4)
•
Master eject sensor
•
Master end sensor
•
Master edge sensor
•
Master set sensor
•
1st drum master sensor
•
2nd drum master sensor
For details, see the adjustment procedures for each sensor in section 3.