Mf Send Test - Oki OKIOFFICE44 Service Manual

7.1.14 MF Send Test

Start
Connect oscilloscope probe
across the line terminals
L1 and L2.
Perform MF SEND TEST.
(See 6.11.)
MF signal appears
across L1 and L2?
End
Troubleshooting
No
Yes
MF signal appears across CN10-A8, B8
(S) and CN10-A12, B12 (0V) of R44 Board?
Replace WN5 Board.
Yes
Replace R44 Board.
Return to section 7.1.1
7 - 22
Yes
Replace R44 Board.
Signal route:
IC8-26 to 33 (AD0 to AD7)
IC8-1, 2 IC12-7 (S)
CN10-A8, B8 (S)
Signal route:
CN3-15, 16 T1-3, 1
CN1-3, 4
Solved?
No
Possible cause:
CML signal
Service Manual, P/N 59276801
No
OKIOFFICE 44