927 Error Code - Lexmark C752 Service Manual

927 error code

RIP Fan service check
Step Actions and questions
1 Turn the power off and manually spin the fan and
check that it rotates freely.
Does the fan rotate freely?
2 Check the RIP fan cable connection to the system
board, J3 for correct installation.
Is the cable installed correctly?
3 Disconnect the RIP fan from J3 on the system board
and check the voltages on J3.
Pin
J3-1
J3-2
J3-3
J3-4
Are the voltages correct?
930 error code
LVPS
This problem with the fuser circuits is usually the zero crossover signal from the LVPS not working correctly.
Step Action and questions
1 LVPS cable - check the LVPS cable to J33 on the
system board to make sure it is seated correctly. Go to
"System board" on page
Is the cable seated correctly?
2 Voltage checks - Disconnect J10 from the system
board assembly. Go to
Check the voltage at J33, on the cable. It measures
approximately +3.7 V dc.
Is the voltage correct?
3
Is 930 error still displayed?
Fan on Fan off Fan
disconnected
Fan switch on
+1.6 V dc +3.3 V dc +3.3 V dc
0 V 0 V 0 V
+1.9 V dc 0 V dc 0 V
+24 V dc +24 V dc +24 V dc
5-8.
"System board" on page
Yes
Go to step 2
Go to step 3
Replace the
fan" on
page 4-64
Fan
disconnected
Fan switch off
+3.3 V dc
0 V
+2 V dc
+24 V dc
Yes
Go to step 2
Go to step 3
5-8.
Replace the
"LVPS
assembly" on
page 4-42
5060-2XX
No
Replace the "RIP
fan" on
page 4-64
Install the cable
correctly
"RIP Replace the
"System board"
on page 4-67
No
Install the cable
correctly
Replace the
following FRUs in
order:
1. "LVPS
assembly"
on page 4-42
2. "System
board" on
page 4-67
Problem solved
2-85
Diagnostic information