Dell 2130cn Service Manual page 198

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Step
Checking the HARN ASSY TONER CRUM for continuity
Disconnect J311 from the Toner CRUM (Y).
Disconnect J312 from the Toner CRUM (M).
Disconnect J313 from the Toner CRUM (C).
Disconnect J314 from the Toner CRUM (K).
Disconnect J31 from the PWBA MCU.
Is each cable of J311 to J314 <=> J31 continuous?
6
Checking the HARN ASSY PHD XPRO for continuity
Disconnect J42 from the PWBA MCU.
Disconnect J144 from the PWBA EEPROM (XPRO).
Disconnect P422 from the PHD ASSY.
Is each cable of J42 <=> J144 and P422 continuous?
7
Checking the power to the PWBA EEPROM (XPRO)
Disconnect J42 from the PWBA MCU.
8
Is the voltage across P42-3pin <=> ground on the PWBA
MCU, about +3.3 VDC?
Checking after replacing the PWBA MCU
Replace the PWBA MCU. (Refer to Removal 43/
9
Replacement 11.)
Does the error still occur when the power is turned OFF and
ON?
*1: Though some kind of foreign noise would be possible cause, go to FIP Electrical Noise in Other FIP
and check, to make sure.
Check
1 - 172
Chapter 1 Troubleshooting
Remedy
Yes
Replace the
Go to step 7.
HARN ASSY
TONER CRUM.
Replace the
Go to step 8.
HARN ASSY PHD
XPRO.
Replace the
PWBA EEPROM
Go to step 9.
(XPRO).
Go to Electrical
End of work.
Noise.
No

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