Electrical Components; Mpu - Ricoh D245 Service Manual

4.14 ELECTRICAL COMPONENTS


Unplug the machine power cord before starting the following procedure.

4.14.1 MPU


The battery on the control board can explode if replaced incorrectly.

Dispose of the old battery in accordance with the instructions.
1. Rear cover (page 4-6)
2. Remove the EEPROM [A] from the old MPU.
3. [A]
4. MPU [B] ( x 7,
5. Install the new MPU.
6. Install the old EEPROM on the new MPU.
7. Replace the EEPROM if the EEPROM on the old MPU is defective.

Make sure you print out the SMC reports ("SP Mode Data" and "Logging Data") before
you replace the EEPROM.

Keep EEPROM away from any objects that can cause static electricity. Static electricity
can damage EEPROM data.
SM
x all)
4-59
Electrical Components
D245/D246/D247