Dell 2130cn Service Manual page 205

Step
Checking the connectors of the K Mode Sensor in the
DRIVE ASSY PH for connection
Check the connections between the PWBA MCU and K
Mode Sensor.
Are P/J26 and P/J261 connected correctly?
8
Does the error still occur when the power is turned OFF and
9
ON?
Checking the HARN ASSY KSNR REGCL for continuity
Disconnect J26 from the PWBA MCU.
10
Disconnect J261 from the K Mode Sensor.
Is each cable of J26 <=> J261 continuous?
Checking the power to the K Mode Sensor
Disconnect J26 from the PWBA MCU.
11
Is the voltage across P26-1pin <=> ground on the PWBA
MCU, about +3.3 VDC?
Checking the K Mode Sensor for operation
Remove the DRIVE ASSY PH from the printer once, but P/
J261 and P/J24 should be connected.
Enter the [Digital Input] - [K Mode SNR] in [CE Diag] tab of
12
[CE Diag].
During this check, close the COVER ASSY FRONT.
Does the voltage change, when a piece of paper is inserted
into the gap of the K Mode Sensor?
Check
1 - 179
Chapter 1 Troubleshooting
Remedy
Yes
Reconnect the
connector(s) P/
Go to step 10. J26 and/or P/
J261correctly,
then go to step 9.
Go to step 10. End of work.
Replace the
Go to step 11. HARN ASSY
KSNR REGCL.
Replace the
PWBA MCU.
Go to step 12. (Refer to Removal
43/ Replacement
11.)
Replace the Replace the
PWBA MCU. DRIVE ASSY PH.
(Refer to Removal (Refer to Removal
43/ Replacement 31/ Replacement
11.) 23.)
No