Dell 3130cn Service Manual page 243

Step
Checking the power to DRIVE ASSY OPT FDR
Disconnect the connector of P/J422 on the PWBA OPT
FDR.
18
Is the voltage across ground <=> J422-6pin on the PWBA
OPT FDR, about +24 VDC when the interlock switch
(HARN ASSY INTERLOCK) is pushed?
Checking the connectors of the PWBA OPT FDR and
PWBA MCU for connection
19 Check the connections between the PWBA OPT FDR and
PWBA MCU.
Are P/J419, P/J281 and P/J28 connected surely?
Checking the HARN ASSY FDR UNIT for continuity
Disconnect P/J419 from the PWBA OPT FDR.
20
Disconnect P/J281 from the HARN ASSY R SIDE.
Is each cable of P/J419 <=> P/J281 continuous?
Checking the HARN ASSY R SIDE for continuity
Disconnect P/J281 from the HARN ASSY FDR UNIT.
21
Disconnect P/J28 from the PWBA MCU.
Is each cable of P/J281 <=> P/J28 continuous?
Checking the power to the PWBA OPT FDR
Disconnect the connector of P/J28 on the PWBA MCU.
Is the voltage across ground <=> J28-4pin/J28-5pin on the
22
PWBA MCU, about +24 VDC when the interlock switch
(HARN ASSY INTERLOCK) is pushed?
Checking the connectors of the CLUTCH ASSY FEED
OPT for connection
23 Check the connections between the PWBA OPT FDR and
CLUTCH ASSY FEED OPT.
Are P/J421 and P/J4213 connected surely?
Checking the HARN ASSY C2 CHUTE for continuity
Disconnect P/J421 from the PWBA OPT FDR.
24
Disconnect P/J4213 from the CLUTCH ASSY PH FEED.
Is each cable of P/J421 <=> P/J4213 continuous?
Checking the power to CLUTCH ASSY FEED OPT
Disconnect the connector of P/J421 on the PWBA OPT
FDR.
25
Is the voltage across ground <=> J421-1pin on the PWBA
OPT FDR, about +24 VDC when the interlock switch
(HARN ASSY INTERLOCK) is pushed?
Checking the connectors of the PWBA OPT FDR and
PWBA MCU for connection
26 Check the connections between the PWBA OPT FDR and
PWBA MCU.
Are P/J419, P/J281 and P/J28 connected surely?
Checking the HARN ASSY FDR UNIT for continuity
Disconnect P/J419 from the PWBA OPT FDR.
27
Disconnect P/J281 from the HARN ASSY R SIDE.
Is each cable of P/J419 <=> P/J281 continuous?
Version 1 2008.02.15
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Chapter 1 Troubleshooting
Yes
Replace the
DRIVE ASSY
OPT FDR.
Go to step 20. P/J419, P/J281
Go to step 21. HARN ASSY FDR
Go to step 22. HARN ASSY R
Replace the
(Refer to Removal
PWBA OPT FDR.
30/ Replacement
Go to step 24.
P/J4213 surely.
Go to step 25. HARN ASSY C2
Replace the
CLUTCH ASSY
PH FEED.
(Refer to Removal
40/ Replacement
4.)
Go to step 27. P/J419, P/J281
Go to step 28.
No
Go to step 19.
Reconnect the
connector(s)
and/or P/J28
surely.
Replace the
UNIT.
Replace the
SIDE.
Replace the
PWBA MCU.
14.)
Reconnect the
connector(s)
P/J421 and/or
Replace the
CHUTE.
Go to step 26.
Reconnect the
connector(s)
and/or
P/J28 surely.
Replace the
HARN ASSY
FDR UNIT.