Dell 2135cn Service Manual page 419

Step
Checking the PHD UNIT for connection
Remove the PHD UNIT.
Are five HV terminals on the PHD UNIT, and five springs on
the frame (PL4.1.10 and PL4.1.15 to 18) dirty and/or
deformed?
10
Checking after reseating the PHD UNIT
11 Reseat the PHD UNIT.
Is the image printed correctly?
Checking after reseating TONER CARTRIDGEs (Y/M/C/K)
Reseat the TONER CARTRIDGEs (Y/M/C/K), and check
12
that their lock keys are in the lock positions.
Is the image printed correctly?
Checking after reseating the PWBA MCU
13 Reseat the PWBA MCU.
Is the image printed correctly?
Checking after reseating the PWBA CONT AIO
14 Reseat the PWBA CONT AIO.
Is the image printed correctly?
Checking after reseating the TRANSFER ASSY
15 Reseat the TRANSFER ASSY.
Is the image printed correctly?
Checking after reseating the PWBA HVPS
16 Reseat the PWBA HVPS.
Is the image printed correctly?
Version 1 2008.02.01
Check
1 - 391
Chapter 1 Troubleshooting
Remedy
Yes
Clean and/or
replace the PHD
Go to step 11.
UNIT or
SPRING(s).
End of work. Go to step 12.
End of work. Go to step 13.
End of work. Go to step 14.
End of work. Go to step 15.
End of work. Go to step 16.
End of work. Go to step 17.
No