Dimm Error; Excess Current To Usb Device; Usb Host - Brother DCP-8070D Service Manual

■ Error code C9

DIMM Error

Make sure that the DIMM is inserted correctly.
The failed DIMM is installed, or the DIMM is not installed correctly.
<User Check>
• Install the DIMM correctly.
Step
1 Main PCB failure
■ Error code CA
Unusable Device
Remove the Device. Turn the power off and back on again.

Excess current to USB device

<User Check>
• Remove the USB device from the USB direct interface and turn the power off. Turn it on
again after a while.
• Replace the USB device with another one.
Step
Harness connection failure of USB
1
host relay PCB ASSY
2 USB host relay PCB failure
3 Main PCB failure
■ Error code CD
No Drum Unit
Install the Drum Unit.
Drum unit is not installed into the machine
<User Check>
• Check if the drum unit is installed into the machine.
Step
Dirt on electrodes on drum unit
1
and machine body
2 HVPS PCB unit failure
3 Main PCB failure
Cause
Cause
Cause
3-36
Remedy
Replace the main PCB ASSY.
Remedy
Check the harness connection of the USB
host relay PCB ASSY and reconnect it.
Replace the USB host relay PCB ASSY.
Replace the main PCB ASSY.
Remedy
Clean both electrodes.
(Refer to Fig. 3-2, Fig.
Replace the HVPS PCB unit.
Replace the main PCB ASSY.
3-3)
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