Diagnostic information 2-57
5061
927.03 error code service check
RIP fan
930.09 error code service check
LVPS
This problem with the fuser circuits is usually the zero crossover signal from the LVPS not working correctly.
Step Actions and questions Yes No
1 Turn the power off, manually spin the fan, and check
that it rotates freely.
Does the fan rotate freely?
Go to step 2 Replace the RIP
fan. See “RIP
fan removal” on
page 4-87.
2
Check the RIP fan cable connection to the system
board JR1 for correct installation.
Is the cable installed correctly?
Go to step 3 Install the cable
correctly.
3
Disconnect the RIP fan from JR1 on the system board,
and check the voltages on JR1.
Are the voltages correct?
Replace the RIP
fan. See “RIP
fan removal” on
page 4-87.
Replace the
system board.
See “System
board removal”
on page 4-90.
Step Actions and questions Yes No
1 LVPS cable—check the LVPS cable to J17 on the
system board to make sure it is seated correctly. Go to
“System board” on page 5-8.
Is the cable seated correctly?
Go to step 2 Install the cable
correctly.
2
Voltage checks—Disconnect JCVR1 from the system
board assembly. Go to “System board” on page 5-8.
Check the voltage at J17, on the cable. It measures
approximately +3.7 V dc.
Is the voltage correct?
Go to step 3 Replace the
following FRUs in
order:
1. LVPS
assembly.
See “LVPS
assembly
removal” on
page 4-53.
2. System
board. See
“System
board
removal” on
page 4-90.
Pin Fan on Fan off Fan
disconnected
Fan switch on
Fan
disconnected
Fan switch off
JR1-1 +1.6 V dc +3.3 V dc +3.3 V dc +3.3 V dc
JR1-20 V0 V0 V 0 V
JR1-3 +1.9 V dc 0 V dc 0 V +2 V dc
JR1-4 +24 V dc +24 V dc +24 V dc +24 V dc
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