3-4-1
2A3/4
3-4-1 Replacing the main PCB
(1) Replacing the main PCB only
After replacing the main PCB, remove the backup RAM (IC15) from the old main PCB
and fit it to the new main PCB to maintain the original setting data.
(2) Replacing the main PCB and backup RAM
When replacing the backup RAM along with the main PCB, perform the following steps.
Procedure
• Before removing the old backup RAM:
1. Enter the maintenance mode.
2. Execute maintenance item U000 to output a list of the current settings for
maintenance items.
3. Exit the maintenance mode.
4. Turn the main switch off and disconnect the power plug.
5. Replace the main PCB and backup RAM with the new ones.
• After installing the new backup RAM:
6. Insert the power plug and turn the main switch on.
7. Enter maintenance mode.
8. Execute maintenance item U020.
9. Execute maintenance item U252 and select the destination.
10. Execute maintenance item U000 and output a list of the current settings for
maintenance items.
11. Compare the lists output in steps 2 and 10. If there are any differences, reenter
the data in accordance with the values on the list output in step 2.
12. Exit the maintenance mode.
Summary of Contents for Ri 4230
Page 3: ...SERVICE MANUAL Ri 4230 5230 ...
Page 13: ...4230 5230 S M MCA THEORY AND CONSTRUCTION SECTION I I Theory and Construction Section ...
Page 14: ...1 1 5 2A3 4 CONTENTS 1 1 Specifications 1 1 1 Specifications 1 1 1 ...
Page 100: ...4230 5230 S M MCA ELECTRICAL SECTION II II Electrical Section ...
Page 119: ......
Page 138: ......
Page 159: ...4230 5230 S M MCA III Set Up and Adjustment Section III SET UP AND ADJUSTMENT SECTION ...
Page 448: ...2A3 4 3 6 3 25 Toner scatters at the leading edge of the image See page 3 6 17 ...