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SERVICE MANUAL FOR M35&36; CHASSIS

SERVICE MANUAL FOR M35&36; CHASSIS

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TCL<br />

Chassis M35&<strong>36</strong> Service Manual<br />

Check the voltage of<br />

of<br />

Pin54 of of IC201, is is it it more<br />

than 3.3V?<br />

YES<br />

Check Q206 and its its per-<br />

Ipheral components.<br />

NO<br />

NO<br />

The channel can’t be<br />

stored<br />

YES<br />

Check Q103, Q104 and<br />

Their peripheral components<br />

NO<br />

Check IC202 and IC201<br />

Fig.6 The channel can’t be stored<br />

Tuning control<br />

don’t work<br />

Is Is the voltage of<br />

of<br />

BM terminal of of the<br />

tuner 5V?<br />

YES<br />

Can the VT voltage<br />

vary form 0 to to 30V<br />

While tuning?<br />

YES<br />

Check the tuner,<br />

Q101, IC101 and<br />

IF IF section circuit.<br />

NO<br />

NO<br />

Check the 5V<br />

power supply<br />

circuit for the tuner<br />

Check the circuit<br />

From pin6 of of IC201<br />

to to VT terminal of<br />

of<br />

the tuner.<br />

Fig.7 Tuning control don’t work<br />

55 03.Mar.2003

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