Brother HL-4150CDN - Paper Is Not Fed from the Specified Tray; The Room Temperature Is High or Low; The USB Direct Interface Does Not Work (Error Code CA, Etc)

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Confidential
3.8.3 The USB direct interface does not work (Error code CA, etc)
<User Check>
- Check if the data is supported device.
- Replace the USB flash memory and check if the interface works.
- Turn OFF and ON the power.
- Reduce the data in the USB flash memory.
3.8.4 The room temperature is high or low
<User Check>
- Adjust the room temperature to 10 °C to 30 °C.
- Check if the exhaust opening is blocked.
3.8.5 Paper is not fed from the specified tray
<User Check>
- Specify the tray correctly.
- Check the printer driver setting.
Step Cause Remedy
1 Harness connection failure of
USB host relay PCB ASSY
Check the harness connection of the USB
host relay PCB ASSY and reconnect it.
2 USB host relay PCB ASSY
failure
Replace the USB host relay PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 Internal temperature
thermistor failure
Replace the Internal temperature thermistor.
2 External temperature/
humidity sensor failure
Replace the high-voltage power supply PCB
ASSY.
3 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 Malfunction of firmware Upload the latest firmware.
2 Main PCB failure Replace the main PCB ASSY.