Panasonic KX-F1200 Service Manual And Technical Manual page 41

Note 6) Check IC404 (Digital Board)
I'_A-r i iuu
Bus
Is the amplitude at pins 84-89, 92-99,
101-104 of IC404 4-5 Vp-p?
YES
Reset
Is the voltage at a pin 66 of IC404 4-5 V?
YES
NO
NO
j Check the solder of pins
"/84-89'92-99'101~104 of IC404.
Check the solder of these pins.
Is the voltage at pins 37,38,64,65 of IC404
0V?
YES
NO
I
Check the solder of these pins.
J END
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