Epson EPL-N2000 Service Manual page 143

Troubleshooting
Table 5-19. The LCD Displays SERVICE REQ. C1120/1121/1122/1123
Step Cause
1 The PROG ROM may be
bad.
2 C207 MAIN board may
be bad.
Table 5-20 The LCD Displays "Service Req. C1180"
Step Cause
1 The optional ROM SIMM
may be bad.
2 C207 MAIN board may
be bad.
Table 5-21. The LCD Displays "Service Req. C1200/1210"
Step Cause
1 The EEPROM may be
bad.
2 C207 MAIN board may
be bad.
Table 5-22. The LCD Displays "Service Req. C1400"
Step Cause
1 C207 MAIN board may
be bad.
Table 5-23. The LCD Displays Other Error Codes
Step Cause
1 C207 MAIN board may
be bad.
5-10
Checkpoint
Is operation OK when the PROG
ROM is replaced?
C1120: Replace IC30
C1121: Replace IC30
C1122: Replace IC29
C1123: Replace IC29
---
Checkpoint
Is operation OK when the ROM
SIMM is replaced?
---
Checkpoint
Perform EEPROM initialization.
(Note that the information
including the page counter will be
lost.) Is operation OK?
---
Checkpoint
Is operation OK when the main
board is replaced?
Checkpoint
Is operation OK when the main
board is replaced?
EPL-N2000 Service Manual
Finding Solution
Yes Replace the ROM
(IC29/30).
If ICs 1, 2, 3, and
4 are attached,
replace them
instead.
--- Replace the
main board.
Finding Solution
Yes Replace the ROM
SIMM.
--- Replace the
main board.
Finding Solution
Yes Replace the
EEPROM.
--- Replace the
main board.
Finding Solution
Yes Replace the
main board.
Finding Solution
Yes Replace the
main board.
Rev. A