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Step
Actions and questions
4
Disconnect the VTB fan from J4 on the engine board
and check the voltages on J4.
Pin
J4-1
J4-2
J4-3
J4-4
Are the voltages correct?
927 Error code
RIP fan
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 engine
board, J53 for correct installation.
Is the cable installed correctly?
3
Check for any obstruction in the fan.
Is there an obstruction in the fan?
4
Disconnect the RIP fan from J53 on the engine board
and check the voltages on J53.
Pin
J53-1 +1.6 V dc
J53-2 0 V
J53-3 +1.9 V dc
J53-4 +24 V dc
Are the voltages correct?
Fan on
Fan off
Fan
disconnected
Fan switch on
+1.6V dc
+3.3 V dc
+3.3 V dc
0 V
0 V
0 V
+3.1 V dc
0 V dc
0 V
+24 V dc
+24 V dc
+24 V dc
Fan on
Fan off
Fan
disconnected
Fan switch on
+3.3 V dc
+3.3 V dc
0 V
0 V
0 V dc
0 V
+24 V dc
+24 V dc
Yes
Replace the VTB
fan. See
"Vacuum
transport belt
Fan
(VTB) fan
disconnected
removal" on
Fan switch off
page 4-84
+3.3 V dc
0 V
+2 V dc
+24 V dc
Yes
Go to step 2
Go to step 3
Remove the
obstruction.
Replace the RIP
fan. See
"RIP fan
removal" on
Fan
page
4-71.
disconnected
Fan switch off
+3.3 V dc
0 V
+2 V dc
+24 V dc
5060-00x
No
Replace the engine
board. See
"Engine board
removal" on
page
4-29.
No
Replace the RIP
fan. See
"RIP fan
removal" on
page
4-71.
Install the cable
correctly.
Go to step 4
Replace the engine
board. See
"Engine board
removal" on
page
4-29.
2-91
Diagnostic information
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