Brother HL-1040, HL-820, HL-1020 manual Scanner failure

M-8

Scanner failure

Possible cause	Step	Check	Result	Remedy
Harness	1	Is the connection of the	No	Reconnect the connectors
connection		scanner motor connector P5		securely.
failure		on the panel sensor PCB
		secured?
Power supply	2	Is the voltage between pins 1	No	Check if +24VDC is supplied
input		(+24VDC) and 2 (GND) of		between pins 1 (+24VDC) and
		connector P5 on the panel		4 (+24VRET) of connector P8
		sensor PCB 24VDC?		on the panel sensor PCB. If
				not, check the power supply
				output on the low-voltage
				power supply PCB.
			Yes	Replace the scanner unit.

IV-25