EPSON AcuLaser C9200N Revision D
Troubleshooting      Service Call Error 129
Confidential
3.3.3  Controller Related Error
When a controller related error occurs, make sure to check the initial check items listed 
below first. If the error still occurs after that, replace the part given on an error basis in 
the Failed Parts List to perform troubleshooting.
 Initial Check
 Power the printer off and on several times.
 Check that the printer is grounded properly.
 Check that the connectors are connected to the controller board 
securely and correctly.
 Check that the DIMM is connected to the controller board securely and 
correctly.
 Check that the printer is not in electrically noisy environments.
When powering the printer off and on again, do not turn it 
on immediately after turning it off. Make sure to wait at 
least for a few seconds before the power-on.
Table 3-18.  Failed Parts List
Sort Error Code Description
Error-causing hard ware (or factor)
Controller 
Board
Code DIMM
Std. RAM 
DIMM
Opt. RAM 
DIMM
Video I/F 
Cable
Mechanical 
Control 
Board
Noise, etc.
C 0000-0799 CPU error √ √
C 0800 IPL error (controller defect) √ √
C 0998 Engine communication error (only when power-on) √ √ √
C 0999 Flash ROM has no program data √
C 1000 Standard RAM error (not installed, etc.) √
C 1001 Standard RAM error (standard stack is undefined, etc.) √
C 1002 Standard RAM error (standard size is undefined, etc.) √
C 1003 Optional RAM error √
C 1010 Verification error √
C 1020 RAM error (slot 0) √ √
C 1021 RAM error (slot 1) √ √
C 1100 ROM checksum error (font) √
C 1101 ROM checksum error (font) √
C 1110 ROM checksum error (font) √
C 1111 ROM checksum error (font) √
C 1120 ROM checksum error (program) √
C 1121 ROM checksum error (program) √
C 1122 ROM checksum error (program) √