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• IC Block Diagrams
– MAIN Board –
IC101, 201 TDA7296
THERMAL
BIPOLAR
SHUTDOWN
TRANSCONDACTANCE
INPUT STAGE
MOS GAIN &
MOS
SHORT
–
LEVEL SHIFTING
OUTPUT
CIRCUIT
+
STAGE
STAGE
PROTECTION
STANDBY/
MUTE
BOOST-
STRAP
1 2
3
4
5
6
7
8 9
10
11
12
IC301 TDA7439
30
29
28
27
26 25 24 23
22 21 20 19
18
17
VOLUME
TREBLE
MIDDLE
BASS
SPEAKER
ATTENUATOR
IIC BUS
DECODER &
LATCH
VREF
GAIN AMP
SUPPLY
MULTIPLEXER
1
2 3 4
5
6
7
8
9
10
13
14 15
IC309 KA3082
DRIVER OUT
16
PRE DRIVER
VOLUME
LOGIC
SWITCH
TREBLE
1
2 3
4
5
6
MIDDLE
BASS
SPEAKER
ATTENUATOR
GAIN AMP
MULTIPLEXER
11 12 13 14
15
– 35 –
IC804 BU1924F-E2 (AEP, UK models)
16
15
PLL 57kHz
RDS/ARI
PLL
1187.5Hz
COMPARATOR
8th SWITCHED
BIPHASE
CAPACITOR
DECODER
FILTER
DEFFERENTIAL
ANTI-ALIASING
DECODER
FILTER
1
2
3
4
TSD
7
8 9 10
14
13
12 11 10
9
CLOCK
TEST
5
6
7
8
– 36 –
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