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Step
Actions and questions
2
Check the TMC pin (B) in the yellow cartridge contact
assembly to make sure it moves freely.
Does the pin move freely?
3
Go to
"BASE SENSOR TEST" on page
check the yellow TMC sensor. When you press the
TMC pin in the yellow cartridge contact assembly,
make sure it actuates the TMC switch on the developer
HVPS. When the TMC pin is pressed in, you hear a
click when the switch actuates. Check for mechanical
interference between the contact block and the
developer HVPS.
Note: You may need to turn the printer off to hear the
click.
Does the yellow TMC switch on the developer HVPS
board actuate properly when the TMC pin is pressed?
4
Check the developer HVPS board to make sure it is not
cracked or broken.
Is the developer HVPS cracked or broken?
5
Check the mounting of the developer HVPS. Make
sure the screws that mount the power supply are
properly tightened down and the board is positioned
and mounted correctly.
Is the developer HVPS mounted correctly?
6
Make sure the developer HVPS cable is correctly
installed on the developer board assembly.
Is the cable correctly installed?
7
Make sure the developer HVPS cable is correctly
installed at J6 on the system board.
Is the cable properly installed?
8
Check the voltage at connector J6-16 on the system
board while pressing the yellow TMC pin in the
cartridge contact assembly.
Does the voltage change when the pin is pressed?
B
3-24, and
Yes
No
Go to step 3
Replace the
cartridge contact
assembly. See
"Cartridge
contact
assembly
removal" on
page
Replace the
Go to step 4
cartridge.
Go to step 6
Go to step 5
Replace the
If the board is
developer HVPS
incorrectly
assembly. See
installed, install it
"Developer
correctly. Make
HVPS board
sure all the
removal" on
mounting screws
page
4-39.
are tightened
down. Recheck
the printer to see
if a 942 Error is
still displayed.
Go to step 7
Correctly connect
the cable.
Go to step 8
Correctly connect
the cable.
Replace the
Go to step 9
system board.
See
"System
board removal"
on page
4-89.
Diagnostic information
5061
4-35.
2-61
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