Dell 2130cn Service Manual page 195

Step
Check the connections between the PWBA LVPS and
PWBA MCU.
Are P/J501 and P/J14 connected correctly?
9
Does the error still occur when the power is turned OFF and
10
ON?
Checking the HARN ASSY LVPS2 for continuity
Disconnect J501 from the PWBA LVPS.
11
Disconnect J14 from the PWBA MCU.
Is each cable of J501 <=> J14 continuous?
Checking the HARN ASSY MCU HAN for continuity
Disconnect the P/J 530 from the PWBA FAN.
12
Disconnect the P/J 30 from the PWBA MCU.
Is each cable of P/J 530 <=> P/J 30 continuous?
Checking the power to the FAN
Disconnect J503 from the PWBA LVPS.
Is the voltage across P503-1pin <=> ground on the PWBA
LVPS, about +24 VDC when the interlock switch (HARN
ASSY INTERLOCK) is pushed?
13
Checking after replacing the PWBA FAN
Replace the PWBA FAN. (Refer to Removal 12/
14 Replacement 42.)
Does the error still occur when the power is turned OFF and
ON?
Checking after replacing the PWBA LVPS
Replace the PWBA LVPS. (Refer to Removal 11/
15 Replacement 43.)
Does the error still occur when the power is turned OFF and
ON?
Check
1 - 169
Chapter 1 Troubleshooting
Remedy
Yes
Reconnect the
connector(s) P/
Go to step 11. J501 and P/J14
correctly, then go
to step 10.
Go to step 11. End of work.
Replace the
Go to step 12. HARN ASSY
LVPS2.
Replace the
Go to step 13. HARN ASSY
MCU HAR.
Replace the FAN.
(Refer to Removal
Go to step 14.
40/ Replacement
14.)
Go to step 15. End of work.
Replace the
PWBA MCU.
(Refer to Removal End of work.
43/ Replacement
11.)
No