Oki IP-6620 Maintenance Manual page 326

(3) When replacing the EEPROM and the engine board (both the EEPROM and engine board
are defective)
When the EEPROM and engine board are replaced at the same time, the followings are lost:
- Mechanical adjustment parameters; and
- Counter data such as accumulated print length
To avoid this, perform the steps (1) or (2) above to acquire the EEPROM data or the data in the
flash memory backup area. If the engine's system information is not available, perform the
following steps.
(a) Install a new engine board.
- If necessary, rewrite the engine firmware program.
(b) Skip POC and start the printer.
- Press the CANCEL button and the POWER switch on the operation panel at the same
time to start the printer while skipping POC.
- The printer starts up with an EEPROM error because the EEPROM is not initialized, and
the panel guidance is displayed in English.
(c) Perform the following in the SYSTEM menu in the maintenance mode on the operation
panel.
- INITIALIZE EEPROM: Initializes the EEPROM.
- DATE SETTING:
- TIME SETTING:
- SERIAL No.:
Select PRIMED for INK SYSTEM STATUS.
(d) Restart the printer.
(e) Enter the adjustment values for mechanical adjustment and print head adjustment.
<When the parameters are recorded>
- When mechanical adjustment parameters of the engine are recorded, no adjustment is
required. Enter the adjustment values for mechanical adjustment and print head
adjustment.
<When the parameters are not recorded>
- Perform mechanical adjustment and print head adjustment, and then enter the
adjustment values.
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
Set the year, month, and day.
Set the system time (hour/minute/second).
Set the serial number of the printer.
OKI Data Infotech Corporation CONFIDENTIAL
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