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30 July, 1999 (Revised)
NV-RAM Replacement Procedure
Make sure you have the factory settings that come with the copier before beginning
the following procedure:
1. Use the SP7-902 mode to output the SP mode values that have been modified
from their default value.
2. Set the main power switch to OFF and unplug the power cord.
3. Replace the NV-RAM (IC115) on the main board. (Refer to "Main Control Board
Replacement Procedure".
4. Reassemble the machine. Then, turn on the main power and enter the
machine's device number in the factory set mode (consult with your manager
for details).
5. Execute SP5-801 (RAM Clear).
6. Enter the SP mode changes you output in step (1).
7. Perform the auto color calibration procedure.
8. If the image needs adjustment after being subject to auto color calibration,
calibrate the target using the SP4-502/503 modes.
• The factory-set value of the total counter NV-RAM supplied as a part (A2579099)
is –2000±20 for K (development cycles) and –3000±20 for CMY (development
cycles).
SYSTEM AND ELECTRONICS
6-105
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