Brother International MFC-P2000 Service Manual - Page 99
Laser unit failure, sensor PCB 24VDC?
UPC - 012502525394
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M-8 Laser unit failure Possible cause Harness connection failure Power supply input Step Check 1 Is the connection of the scanner motor connector P5 on the panel sensor PCB secure? 2 Is the voltage between pins 1 (+24VDC) and 2 (GND) of connector P5 on the panel sensor PCB 24VDC? Result Remedy No Reconnect the connectors securely. No Check if +24VDC is supplied between pins 1 (+24VDC) and 4 (+24VRET) of connector P8 on the panel sensor PCB. If not, check the power supply output on the low-voltage power supply PCB. Yes Replace the laser unit. IV-30
IV-30
M-8
Laser unit failure
Possible cause
Step
Check
Result
Remedy
Harness
connection
failure
1
Is the connection of the
scanner motor connector P5
on the panel sensor PCB
secure?
No
Reconnect the connectors
securely.
Power supply
input
2
Is the voltage between pins 1
(+24VDC) and 2 (GND) of
connector P5 on the panel
sensor PCB 24VDC?
No
Check if +24VDC is supplied
between pins 1 (+24VDC) and
4 (+24VRET) of connector P8
on the panel sensor PCB.
If
not, check the power supply
output on the low-voltage
power supply PCB.
Yes
Replace the laser unit.