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PRINTER
November 29, 1999
2-12
LD Safety
Interlock Switch
To ensure that the laser beam does not inadvertently switch on during servicing,
there is a safety switch located at the left cover. The switch is on the LD 24 V line.
Mechanical Laser Shutter
When the AIO cartridge is removed, the laser shutter is released and this interrupts
the laser beam.
LD Unit Service Call Condition
Sub-Code
Error Code
Description
21
9-20
No polygonal motor synchronization signal detected
31
No polygonal motor lock signal detected
32
9-23
Polygonal motor lock failure during printing
Power Supply
Unit
F C U
LD Drive Board
LD Driver
L D
+ 2 4 V
C N 1 9 - 1
C N 1 - 7
P D
Voltage
Regulator
Interlock
Switch
C N 2
H306D500.WMF