OKI ML3390 01091308*01256402 User Manual
Product codes
01091308*01256402
Chapter 8: Troubleshooting
8-6
Major faults
The following fault messages are unlikely to be displayed in normal
use. They are listed here for the sake of completeness. Should any of
these faults occur, contact your supplier.
use. They are listed here for the sake of completeness. Should any of
these faults occur, contact your supplier.
The ALARM lamp also blinks when these faults occur; the follow-
ing lamps light permanently in addition.
ing lamps light permanently in addition.
10 cpi 15 cpi 17 cpi 20 cpi PROP
UTL
PRES BOLD
Cause
•
MPU, internal RAM
•
Program ROM
•
RAM
•
•
internal character
generator
generator
•
•
EEPROM
•
Firmware time moni-
toring
toring
•
•
Firmware NMI signal
•
•
Firmware BRK com-
mand
mand
•
•
Serial interface card,
MPU, internal RAM
MPU, internal RAM
•
•
Serial interface card,
ROM
ROM
•
•
Serial interface card,
RAM
RAM
•
•
Head positioning
•
•
•
Print head gap
•
•
Print head contact
•
•
•
LF/space motor,
driver
driver