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KX-T7533G/KX-T7533G-B
3. THE ELECTRONIC VOLUME OF THE SPEAKER-PHONE DOES NOT WORK.
Press the speaker-phone button and create a
dial tone.
Does an oscillation signal appear at Pins 3
No
Check X3 and R92.
and 4 of IC6?
Check Vcce=5 V.
Yes
Check Pins 33~38, 44 and 11 of IC2.
4. THE ELECTRONIC VOLUME OF THE HANDSET DOES NOT WORK.
Lift a handset and make a dial tone.
Does an oscillation signal appear at Pins 3
No ;
Check X3 and R92.
and 4 of IC6?
Check Vcc=5 V.
Yes
Check IC2 and around circuit of IC2.
—~26-
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