Dell 2130cn Service Manual page 270

Step
Checking the HARN ASSY L SIDE for continuity
Disconnect J23 from the PWBA MCU.
19
Disconnect J233 from the SENSOR PHOTO.
Is each cable of J23 <=> J233 continuous?
Checking the power to the SENSOR PHOTO
Disconnect J23 from the PWBA MCU.
20
Is the voltage across P23-6pin <=> ground on the PWBA
MCU, about +3.3 VDC?
Checking the SENSOR PHOTO for operation
Check the voltage across J23-8pin <=> ground on the
PWBA MCU.
21 Remove the CHUTE LOW (PL3.2.27) once to check the
operation.
Does the voltage change, when the ACTUATOR SSI is
operated?
Checking the connectors of the SENSOR PHOTO (Regi
Sensor) for connection
Check the connections between the PWBA MCU and
SENSOR PHOTO.
Are P/J23 and P/J232 connected correctly?
22
Checking the HARN ASSY L SIDE for continuity
Disconnect J23 from the PWBA MCU.
23
Disconnect J232 from the SENSOR PHOTO.
Is each cable of J23 <=> J232 continuous?
Checking the power to the SENSOR PHOTO
Disconnect J23 from the PWBA MCU.
24
Is the voltage across P23-3pin <=> ground on the PWBA
MCU, about +3.3 VDC?
Check
1 - 244
Chapter 1 Troubleshooting
Remedy
Yes
Replace the
Go to step 20. HARN ASSY L
SIDE.
Replace the
PWBA MCU.
Go to step 21. (Refer to Removal
43/ Replacement
11.)
Replace the
PWBA MCU. Replace the
(Refer to Removal SENSOR
43/ Replacement PHOTO.
11.)
Reconnect the
connector(s) P/
Go to step 23.
J23 and/or P/J232
correctly.
Replace the
Go to step 24. HARN ASSY L
SIDE.
Replace the
PWBA MCU.
Go to step 25. (Refer to Removal
43/ Replacement
11.)
No