Service manual

ER-A410U/ER-A420U IPL FROM EP-ROM

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CHAPTER 6. IPL FROM EP-ROM

Before installation, unplug the AC power cord from the AC outlet.

1. Open the top cabinet.

2. Set the IPL switch (S1) to ROM COPY position.

3. Install the IPL ROM in the IC socket of the MAIN PWB.

4. Turn the mode key switch to SRV’ position, and insert the AC power

cord into the AC outlet.

5. Turn the mode key switch to SRV position. The IPL procedure is

started.

When the procedure is completed, the message of “Completed” is

shown.

6. Unplug the AC power cord from the AC outlet.

7. Remove the IPL ROM from to the IC socket of the MAIN PWB.

8. Set the IPL switch (S1) to GND position.

9. Replace the top cabinet.

10. Perform the master reset.

Turn the mode key switch to the SRV’ position, insert the AC power

cord into the AC outlet.

While holding down the Journal feed key, turn the mode key from

the SRV position to the SRV’ position.

IPL switch

GND VCC

ROM COPY

IPL ROM

pin-1

IPL switch

GND VCC

ROM COPY