Sharp Aquos LC-60C6600U, Service Manual

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LC-60/70LE660U,C6600U
6 – 14
No audio (3)
No video at UHF/VHF broadcast signal reception No video at digital broadcast signal reception
Is the specified TV signal selected on the input select menu screen?
Are there the IF signal at input pins(24/25)(IF_N/P) of IC3301(CPU)? Are there the IF signal at input pins(24/25)(IF_N/P) of IC3301(CPU)?
YES
NO
Is there IF-AGC signal at input pin(5) of TU1101?
YES
NO
Check the IF signal line between IC3301 and TU1101, and
their peripheral circuits. Check the IF signal line between IC3301 and TU1101, and
their peripheral circuits.
Check the Tuner I2C lines.
(1)TU1101:pin(10)(SCL), pin(11)(SDA)
(2)IC3301:pin(39), pin(40) Check the IF-AGC line between pin(38) of IC3301 and
pin(5) of TU1101.
Check the Tuner I2C lines.
(1)TU1101:pin(10)(SCL), pin(11)(SDA)
(2)IC3301:pin(39), pin(40)
Does the analog audio signal come from pins(11/12)(SP_L/SP_R) of IC3301(CPU) to pins(22/32)(SP_L/SP_R) of IC1701(Audio AMP)?
YES
NO
Check the audio line between IC3301 and IC1701, and their paripheral circuits.
•
About the L/R Speakers.
Check the connector (P1701) L/R speakers and their peripheral circuits.
YES
Check the RF cable and Antena condition