6: Troubleshooting
Colorwriter LSR 2000 Printer
Service Guide
6-45
Table 6-28
E021 Toner cartridge engagement/separation failure
Cause
Step
Check
Decision
Action
Poor connection
1
Is the mechanical controller
PCB connector J2016
connection good?
NO
Reconnect it.
Door switch
2
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 unit motor
Mechanical controller PCB
3
Use the printer driver tester to
engage to the developing unit.
Does the developing unit
motor rotate?
NO
Replace and check as
follows:
• Developing unit
motor
• Mechanical
controller PCB
Developing rotary position
sensor
Toner cartridge position
sensor
Mechanical controller PCB
4
Are connections between the
mechanical controller PCB
connector J2006, toner
cartridge position sensor
connector J59 and the
developing rotary position
sensor J60 good?
YES
Replace and check as
follows:
• Toner cartridge
position sensor
• Developing rotary
position sensor
• Mechanical
controller PCB
Poor connection
NO
Reconnect them.
Table 6-29
E110 BD failure
Cause
Step
Check
Decision
Action
Laser/scanner unit
DC controller PCB
1
Are the DC controller
connectors J102, J110 and
J111 connections good?
Are the laser driver PCB
connectors J401 and J402
connections good?
Is the BD PCB connector J451
connection good?
YES
Replace and check as
follows:
• Laser/scanner unit
• DC controller PCB
Poor connection
NO
Reconnect them.
