2-92
Service Manual
4069-XXX
Printhead Service Check
The printhead assembly does not contain any service replaceable
parts or components. If service error code 930 displays, the wrong
printhead is installed in the printer.
Note: A 201 paper jam may also indicate a failing printhead. The
paper may have jammed prior to or at the input sensor. Print the
error log and see if 201 or 931 errors are logged.
Service Error Code
Explanation
1
Error Code 931
No first HYSNC Signal
Error Code 932
Lost HYSNC
These errors usually indicate a
failure in the HYSNC signal to the
printhead. Check the continuity of
the cables connected to J3 and J8
on the engine board. If incorrect,
replace the defective cable. The
voltage at J8-4 measures
approxi5 V dc. If incorrect,
replace the engine board. The
voltage at J3-7 measures
approxi24 V dc. If incorrect,
replace the engine board. If correct,
replace the printhead assembly.
2
Error Code 934
Mirror Motor Lost Lock
Error Code 935
Mirror Motor unable to
reach operating speed
These error codes indicate a
problem with the mirror motor circuit
in the printhead assembly or the
mirror motor cable to the engine
board cable or engine board
assembly. Check the continuity of
the mirror motor cable connected to
J3 on the engine board. If incorrect,
replace the cable. The voltage at
J3-7 measures approximately
+24 V dc. If incorrect, replace the
engine board. If correct, replace the
FRUs in the following order:
engine board
printhead assembly
