Epson Aculaser C9200N - Page 116

EPSON AcuLaser C9200N Revision D
Troubleshooting Service Call Error 116
Confidential
E400: ABNORMALLY LOW TONER DENSITY DETECTED CYAN
TCR SENSOR
E402: ABNORMALLY LOW TONER DENSITY DETECTED
MAGENTA TCR SENSOR
E404: ABNORMALLY LOW TONER DENSITY DETECTED
YELLOW TCR SENSOR
E401: ABNORMALLY HIGH TONER DENSITY DETECTED CYAN
TCR SENSOR
E403: ABNORMALLY HIGH TONER DENSITY DETECTED
MAGENTA TCR SENSOR
E405: ABNORMALLY HIGH TONER DENSITY DETECTED
YELLOW TCR SENSOR
Relevant Electrical Parts
 Photoconductor Unit/C
 Photoconductor Unit/M
 Photoconductor Unit/Y
 Toner Supply Motor Y/M (M6)
 Toner Supply Motor C/K (M7)
 Mechanical Control Board (PWB-M)
 Controller Board (PWB-P)
Step Action
Connection Diagram
Control Signal
Location
(electrical parts)
1 Perform image
troubleshooting procedure if
image density is low.
--- ---
2 Clean the TCR Sensor
window on the underside of
the Photoconductor Unit if
dirty.
--- ---
3 M6, M7 operation check PWB-M CNDM2-10 to 13(M6)
PWB-M CNDM3-10 to 13(M7)
C-22
C-23
4 Reinstall Photoconductor
Unit.
--- ---
5 Change Photoconductor Unit. --- ---
6 Change PWB-M (p.198) --- ---
7 Change PWB-P (p.198) --- ---
Relevant Electrical Parts
 Photoconductor Unit/C
 Photoconductor Unit/M
 Photoconductor Unit/Y
 Mechanical Control Board (PWB-M)
 Controller Board (PWB-P)
Step Action
Connection Diagram
Control Signal
Location
(electrical parts)
1 Clean the TCR Sensor window on the
underside of the Photoconductor Unit if
dirty.
--- ---
2 Reinstall Photoconductor Unit. --- ---
3 Change Photoconductor Unit. --- ---
4 Change PWB-M (p.198) --- ---
5 Change PWB-P (p.198) --- ---