Dell 2135cn Service Manual page 260

Step
Checking after replacing the TONER CARTRIDGE (M)
Replace the TONER CARTRIDGE (M), and check that the
lock key is in the lock position. (Refer to Removal 7/
12
Replacement 53.)
Does the error still occur when the power is turned OFF and
ON?
Checking after replacing the PHD UNIT
Replace the PHD UNIT. (Refer to Removal 3/Replacement
13 57.)
Does the error still occur when the power is turned OFF and
ON?
Checking after reseating the TRANSFER ASSY
Reseat the TRANSFER ASSY.
14
Does the error still occur when the power is turned OFF and
ON?
Version 1 2008.02.01
Check
1 - 232
Chapter 1 Troubleshooting
Remedy
Yes
Go to step 13. End of work.
Go to step 14. End of work.
Replace the ADC
Sensor or
TRANSFER
End of work.
ASSY. (Refer to
Removal 48/
Replacement 12.)
No