OKIDATA OL1200ex, Service Manual

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%6.5.2 LCD message troubleshooting
6.5.2
LCD message troubleshooting
If problems are not correctable from the LCD message trouble list, follow the troubleshooting
flowcharts given here to deal with them.
No. Trouble Flowchart number
1. The printer does not work
normally after being turned
on. 1
2. Jam alarm
Paper input jam (1st Tray)
Paper input jam (Front
feeder)
Paper feed jam
Paper exit jam
2-1
2-2
2-3
2-4
3. Paper size error 3
4. Fusing unit error 4
5. SSIO (Synchronous Serial
I/O) error
(Error No. 7, excepting I/F
time-out between the printer
and an optional tray) 5
6. I/F time-out between the
printer and the operator panel 6
7. I/F time-out (no response)
between the printer and an
optional tray (High Capacity
Second Paper Feeder, Power
envelope feeder, etc.)
5
8. Messages cannot be received
through the parallel interface. 7
9. Messages cannot be received
through the serial interface. 8
10. Data cannot be received
through the OKI HSP
interface. 9
Note: When replacing the Control board, install the EEPROM from the old Control board, onto the new
control board.