Dell 3130cn Service Manual page 240

Step
Checking the HARN ASSY REGI SNR for continuity Dis-
connect P/J2922 from the REGI SENSOR.
10
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.
11
Disconnect P/J292 from the HARNESS 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.
12
Is the voltage across ground <=> J29-8pin on the PWBA
MCU, about +3.3 VDC?
Checking the REGI SENSOR for operation
Measure the voltage across ground <=> J29-10pin on the
13 PWBA MCU.
Does the voltage change, every time the actuator of the
REGI SENSOR is operated?
Checking the connectors of the DRIVE ASSY PH for con-
nection
14 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.
15
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.
16 Are the voltages across ground <=> J25-1pin/J25-2pin on
the PWBA MCU, about +24 VDC when the interlock switch
(HARN ASSY INTERLOCK) is pushed?
Checking the connectors of the CLUTCH ASSY PH FEED
for connection
17 Check the connections between the PWBA MCU and
CLUTCH ASSY PH FEED.
Are P/J23 and P/J233 connected surely?
Checking the HARN ASSY R SIDE for continuity
Disconnect P/J23 from the PWBA MCU.
18
Disconnect P/J233 from the CLUTCH ASSY PH FEED.
Is each cable of P/J23 <=> P/J233 continuous?
Checking the power to CLUTCH ASSY PH FEED
Disconnect the connector of P/J23 on the PWBA MCU.
19 Is the voltage across ground <=> J23-5pin on the PWBA
MCU, about +24 VDC when the interlock switch (HARN
ASSY INTERLOCK) is pushed?
Version 1 2008.02.15
Check
1 - 214
Chapter 1 Troubleshooting
Yes
Go to step 11.
Go to step 12. HARN ASSY R
Go to step 13. (Refer to Removal
30/ Replacement
Replace the
PWBA MCU. Replace the SEN-
(Refer to Removal
30/ Replacement (REGI SENSOR).
14.)
Go to step 15.
P/J25 and/or P/
Go to step 16. HARN ASSY R
Replace the
DRIVE ASSY PH.
(Refer to Removal (Refer to Removal
17/ Replacement 30/ Replacement
27.)
Go to step 18.
Go to step 19. HARN ASSY R
Replace the
CLUTCH ASSY
PH FEED.
(Refer to Removal
(Refer to Removal
30/ Replacement
40/ Replacement
4.)
No
Replace the
HARN ASSY
REGI SNR.
Replace the
SIDE.
Replace the
PWBA MCU.
14.)
SOR PHOTO
Reconnect the
connector(s)
J251 surely.
Replace the
SIDE.
Replace the
PWBA MCU.
14.)
Reconnect the
connector(s)
P/J23 and/or
P/J233 surely.
Replace the
SIDE.
Replace the
PWBA MCU.
14.)