Eiki EIP-5000L Service Manual page 54

EIP-5000/5000L
Checking the periphery of GA5
Select R, G and B separately in the pat-
tern menu of the process mode.
Are R, G and B of a picture sent prop-
erly?
NO
Measure pins 31, 21 and 11of SC8004
with an oscilloscope.
These signals are MSB of B/G/R.
Do the contents selected in the pattern
menu correspond with the measured
signals?
NO
Is the clock applied to the pin 58 of
SC8004?
YES
Measure TL8047, 8048, and 8049 with
an oscilloscope.
Do the contents selected in the pattern
menu correspond with the measured
signals?
YES
IC8032 is defective.
YES End of checking the periphery of
GA5.
YES The formatter PWB is defective.
NO Is the clock (65 MHz) applied to
FL8009?
NO
Is the clock (65 MHz) applied to
FL8006?
YES
IC8025 is defective.
NO IC8025 is defective.
4 – 12
YES IC8032 is defective.
NO X8004 is defective.