Printhead Service Check - Ricoh M126 Service Manual

6.5.16 PRINTHEAD SERVICE CHECK

FRU
Printhead

New
printhead
must be
aligned
( p.5-48
"Printhead
Assembly
Electronic
Adjustment"
).
M126/M127/M128
Turn the machine off.
Disconnect the printhead cables from J9 and J6 on the controller
board.
Turn the machine on with the front door closed.
On the controller board, verify +5Vdc on pins 2 and 3 at J6 and
+5Vdc on pins 1,and 10 at J9.
Verify grounds on pins 4, 5, 6, and 7 at J6 and on pin 4 at J9.

If voltages or grounds are incorrect, then check the controller
board. See "Controller Board Service Check" in
"Troubleshooting" for more information.

If voltages are correct, then replace the printhead (comes with
cables).
6-84
Action
SM