Tait TM8115 Service Manual

TM8100/TM8200 Service Manual CODEC and Audio Fault Finding 391
© Tait Electronics Limited June 2006
13.3 No Speaker Audio at Auxiliary Connector
Introduction This section covers the case where the receiver operates normally but there
is no speaker audio at the auxiliary connector. In other words, there is no
signal at pin 13 (
AUD TAP OUT) of the connector. The fault-diagnosis
procedure comprises two tasks:
■ Task 8: check signal from CODEC
■ Task 9: check LPF and buffer amplifier in CODEC circuitry
These tasks need to be followed by those of “Faulty Modulation Using
Auxiliary Connector” on page 402 if there is also a fault with the transmit
modulation using the auxiliary connector.
Figure 13.5 Circuitry in the vicinity of the internal-options connector SK102 (top side)
Internal-options
connector

Tait TM8115 Specifications

General

Brand	Tait
Model	TM8115
Category	Radio
Language	English