Epson Stylus Photo 750 - Page 51

EPSON Stylus Photo 750 Revision A
Troubleshooting Repair of the Control Board 46
Table 3-9. Repair of the Control Board
Sympto
m
Condition Cause Check point Solution
Abnormal
printing
IC12 is
broken.
Check the signal waveform of
DATA(Pin 29) of IC14 and Common
NPNB/PNPB(Pin 16/19).
If DATA
is not
input,
replace
IC2.
IC14 is
broken.
Replace
IC14.