Dell 3130cn Service Manual page 252

Step
Checking the connectors of the CLUTCH ASSY PH TURN
for connection
18 Check the connections between the PWBA MCU and
CLUTCH ASSY PH TURN.
Are P/J23 and P/J232 connected surely?
Checking the HARN ASSY R SIDE for continuity
Disconnect P/J23 from the PWBA MCU.
19
Disconnect P/J232 from the CLUTCH ASSY PH TURN.
Is each cable of P/J23 <=> P/J232 continuous?
Checking the power to CLUTCH ASSY PH TURN
Disconnect the connector of P/J23 on the PWBA MCU.
20
Is the voltage across ground <=> J23-3pin on the PWBA
MCU, about +24 VDC?
Checking the connectors of the DRIVE ASSY PH for con-
nection
21 Check the connections between the PWBA MCU and
DRIVE ASSY PH.
Are P/J25 and P/J251 connected surely?
Checking the HARN ASSY R SIDE for continuity
Disconnect P/J25 from the PWBA MCU.
22
Disconnect P/J251 from the DRIVE ASSY PH.
Is each cable of P/J25 <=> P/J251 continuous?
Checking the power to DRIVE ASSY PH
Disconnect the connector of P/J25 on the PWBA MCU.
23
Are the voltages across ground <=> J25-1pin/J25-2pin on
the PWBA MCU, about +24 VDC?
Checking the connectors of the SENSOR PHOTO (REGI
SENSOR) for connection
24 Check the connections between the PWBA MCU and
REGI SENSOR.
Are P/J29, P/J292 and P/J2922 connected surely?
Checking the HARNESS ASSY REGI SNR for continuity
Disconnect P/J2922 from the REGI SENSOR.
25
Disconnect P/J292 from the HARN ASSY R SIDE.
Is each cable of P/J2922 <=> P/J292 continuous?
Checking the HARN ASSY R SIDE for continuity
Disconnect P/J29 from the PWBA MCU.
26
Disconnect P/J292 from the HARN ASSY REGI SNR.
Is each cable of P/J29 <=> P/J292 continuous?
Checking the power to REGI SENSOR
Disconnect the connector of P/J29 on the PWBA MCU.
27
Is the voltage across ground <=> J29-8pin on the PWBA
MCU, about +3.3 VDC?
Version 1 2008.02.15
Check
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Chapter 1 Troubleshooting
Yes
Go to step 19.
Go to step 20. HARN ASSY R
Replace the
CLUTCH ASSY (Refer to Removal
PH TURN. 30/ Replacement
Go to step 22.
Go to step 23. HARN ASSY R
Replace the
DRIVE ASSY PH.
(Refer to Removal (Refer to Removal
17/ Replacement 30/ Replacement
27.)
Go to step 25.
and/or P/J2922
Replace the HAR-
Go to step 26.
Go to step 27. HARN ASSY R
Go to step 28. (Refer to Removal
30/ Replacement
No
Reconnect the
connector(s)
P/J23 and/or
P/J232 surely.
Replace the
SIDE.
Replace the
PWBA MCU.
14.)
Reconnect the
connector(s)
P/J25 and/or
P/J251 surely.
Replace the
SIDE.
Replace the
PWBA MCU.
14.)
Reconnect the
connector(s)
P/J29, P/J292
surely.
NESS ASSY
REGI SNR.
Replace the
SIDE.
Replace the
PWBA MCU.
14.)