Level 2 Troubleshooting; Fail Code List - Brother HL-4000CN Service Manual

3.

LEVEL 2 TROUBLESHOOTING

3.1

Fail Code List

LCD Display
001-360 Turn OFF
the Power.
003-340 Turn OFF
the Power.
003-356 Turn OFF
the Power.
006-370 Turn OFF
the Power.
009-340 Turn OFF
the Power.
009-342 Turn OFF
the Power.
010-317 Turn OFF
the Power.
010-350 Turn OFF
the Power.
< Name of Fail>
Contents of Trouble
<IOT Fan Motor Failure>
Fuser fan or rear fan fail signal detected.
<IOT Firmware Error>
IOT firmware error
<IOT NVRAM Error>
NVRAM error
<IOT SCANNER Failure>
1. Laser power down.
2. SOS signal not detected.
<IOT CTD Sensor Error>
ADC sensor ASSY power down.
<IOT Low Density Error>
Toner density is low.
<IOT Fuser Detached>
Detected that the fuser ASSY is not mounted.
<IOT Fuser Failure>
1. Temperature exceeding 235 C detected consecutively 4 times.
2. Temperature below 120 C detected consecutively 4 times.
3. Resistance value of STS sensor over 2437K
consecutively 4 times.
4. Target temperature is not reached more than 60 seconds after the
fuser lamp lighted up.
5. After the target temperature is reached, the fuser lamp was kept on
for more than specified time.
6. Value of the STS sensor does not change after the lamp lights up.
7. Temperature exceeding 230 C detected during printing process
consecutively twice.
V-4
Power off/on
See fan motor failure FIP
Power off/on
See firmware error FIP
Power off/on
See NV-RAM error FIP
Power off/on
See SCANNER failure FIP
Power off/on
See CTD sensor error FIP
Power off/on
See low density error FIP
Power off/on
See fuser detached FIP
Power off/on
See fuser failure FIP
detected
Action Reference
BSD
2.9.3
2.9.6
2 3.1
2 3.3
2 3.1
2 3.3
2.5.1
2.5.2
2.8.7
2.8.8
2.8.7
2.8.8
2.9.1
2.9.6
2.9.1
2.9.6