Brother HL-3450CN Service Manual page 279

CHAPTER 8 TROUBLESHOOTING
Service Call Message
ERROR H66
NV_W ERROR
ERROR H67
NV_R ERROR
ERROR H68
NV_B ERROR
ERROR H73
FLASH_R ERROR
ERROR H74
FLASH_W ERROR
PCI BUS ERROR
Status Display
ERROR EC3
WARNING
ERROR EC4
WARNING
ERROR EC7
WARNING
ERROR ED1
WARNING
ERROR ED2
WARNING
ERROR ED3
WARNING
ERROR ED4
WARNING
ERROR ED5
WARNING
ERROR ED6
WARNING
Meaning
NVRAM write error
NVRAM read error
NVRAM read/ write error
FLASH ROM read error
FLASH ROM write error
PCI BUS error
Table 8-8
NVRAM error
Engine controller hardware error
Process timing clock error
Yellow Switching clutch error
Magenta Switching clutch error
Cyan Switching clutch error
Black Switching clutch error
YK Switching solenoid error
* The error occurs when the front cover is opened during
printing.
MC Switching solenoid error
* The error occurs when the front cover is opened during
printing.
8-16
Countermeasure
Replace with a new main
(video controller) PCB.
Replace with a new main
(video controller) PCB.
Replace with a new main
(video controller) PCB.
Replace with a new main
(video controller) PCB.
Replace with a new main
(video controller) PCB.
Replace with a new NC-4100h.
Description