Brother International HL-3400CN Service Manual - Page 301
Brother International HL-3400CN - Color Laser Printer Manual
UPC - 012502526223
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Error Code Concerned Part L2 Laser Unit NO Is the connector LCN3 properly connected ? 4 YES V Replace the laser unit. Is L2 error cleared ? YES NO V Replace the MCTL PCB. Connect the connector properly. YES Is L2 error cleared ? I NO Job is complete. HL-3400ON SERVICE MANUAL MCTL PD LCN e / 20 ] LDU ] SCMCLK SCMRDY SCMON T 2 3 GND +24V-1 4 SM 5 Laser Unit SM LCN3 8-43
HL-3400ON
SERVICE
MANUAL
Error
Code
L2
Concerned
Part
Laser
Unit
Is
the
connector
LCN3
properly
connected
?
NO
Connect
the
connector
properly.
Is
L2
error
cleared
?
4
I
NO
YES
V
Replace
the
laser
unit.
Is
L2
error
cleared
?
NO
V
Replace
the
MCTL
PCB.
YES
YES
Job
is
complete.
MCTL
L
CN
PD
LDU
e
/
20
]
]
LC
N3
SCMCLK
SCMRDY
T
2
3
4
SCMON
GND
+24V-1
5
SM
Laser
Unit
SM
8-43