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6: Troubleshooting
6-44
Colorwriter LSR 2000 Printer
Service Guide
Table 6-27
E020 Rotary rotation failure
Cause
Step
Check
Decision
Action
1
Does the developing rotary
rotate?
YES
See check from Step 5.
Poor connection
2
Is the mechanical controller
PCB connector J2016
connection good?
NO
Reconnect it.
Door switch
3
Disconnect connector J7 from
the power supply unit. When
you turn the door switch
(SW2) ON, is there continuity
between connectors J7-1
(+24VB) and J7-2 (+24VA)?
NO
Replace the door switch.
Developing rotary brake
clutch
Developing unit drive clutch
Mechanical controller PCB
4
Use the printer driver tester to
rotate the developing unit
motor. Does it rotate?
YES
Replace and check as
follows:
• Developing rotary
brake clutch
• Developing unit drive
clutch
• Mechanical
controller PCB
Developing unit motor
Mechanical controller PCB
NO
Replace and check as
follows:
• Developing unit
motor
• Mechanical
controller PCB
Developing rotary position
sensor
Mechanical controller PCB
5
Are the mechanical controller
PCB connector J2006 and
developing rotary position
sensor connector J60
connections good?
YES
Clean the sensor. If it is
not possible to clean it,
replace and check as
follows:
• Developing rotary
position sensor
• Mechanical
controller PCB
Poor connection
NO
Reconnect them.