Adcom GTP-740 - Page 26

26
GTP-740
1
2L-S1
VSS
SHIFT REGISTER
LEVEL SHIFTER LEVEL SHIFTER
LATCH CIRCUIT LATCH CIRCUIT
14
GND
28
VDD
27 R-S1
3L-S2 26 R-S2
4L-S3 25 R-S3
5
L-S4
24
R-S4
6
L-COM1
23
R-COM1
7L-S5 22 R-S5
8L-S6 21 R-S6
9L-COM2 20 R-COM2
10L-S7 19 R-S7
11L-S8 18 R-S8
12L-COM3 17 R-COM3
13L-ST 16 DATA
15 CK
AUDIO ASSEMBLY
U401: TC9163AN
1
2L-S1
VSS
SHIFT REGISTER
LEVEL SHIFTER LEVEL SHIFTER
LATCH CIRCUIT LATCH CIRCUIT
14
GND
28
VDD
27 R-S1
3L-S2 26 R-S2
4L-S3 25 R-S3
5L-S4 24 R-S4
6L-COM1 23 R-COM1
7L-S5 22 R-S5
8L-S6 21 R-S6
9L-COM2 20 R-COM2
10L-S7 19 R-S7
11L-S8 18 R-S8
12L-COM3 17 R-COM3
13L-ST 16 DATA
15 CK
AUDIO ASSEMBLY
U402, U411: TC9164AN
AMPLIFIER 1
OUTPUT
INVERTING
INPUT
NON-INVERTING
INPUT
V –
AMPLIFIER 2
V +
OUTPUT
INVERTING
INPUT
NON-INVERTING
INPUT
1
2
3
4
8
7
6
5
+ – – +
AUDIO ASSEMBLY
U426, U427: 7805
1
2
3
4
OUTPUT
AMPLIFIER NO.1
INVERTING
OUTPUT
NONINVERTING
OUTPUT
INVERTING
INPUT
NONINVERTING
INPUT
V-
8
7
6
5
V+
AD712
OUTPUT
AMPLIFIER NO.2
+ – – +
AUDIO ASSEMBLY
U404-U408, U412, U418, U422-U425:
AD712
IC BLOCK DIAGRAM