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Pin No. 5: Control keys input (Max. Limit voltage)
AN7522/7523 Function : audio output
Symbol
PIN
Function
Symbol
PIN
Function
Vcc 1
Power
supply GND 7 ground
Out 1 (+)
2
Ch 1 output (+)
In 2
8
Ch 2 input
GND(out 1)
3
Ch 1Ground
VOL
9
Volume Control
Out 1 (-)
4
Ch 1 output (-)
Out 2 (-)
10
Ch 2 output (-)
Standby
5
Mute input
GND(out 2)
11
Ch 2 Ground
In 1
6
Ch 1 input
Out 2 (+)
12
Ch 2 output (+)
Note: AN7523 is pin 1 to 9, AN7522 is pin 1 to 12.
TDA8357 Function : vertical output
Symbol
PIN
Function
Symbol
PIN
Function
INPUT
1
、
2 INPUT VFB 6
VFB
VCC 3
VCC VO 8
VO
OUT
4
、
7 OUT VI 9
VI
GND 5
GND
3. Test point Waveforms
V4
0
1 C
5Vpp
0.9Vpp
1000Vpp
H
H
1Vpp
V
H
H
CRT KB
CRT KG
CRT KR
95Vpp
95Vpp
95Vpp
H
H
H
T
80
1 PIN
4
300Vpp
22Vpp
H
H
V4
0
1 B
2.7Vpp
Function TV/AV MENU CH-
CH+ VOL- VOL+
Voltage 0 0.4125 0.825 1.2375 1.65 2.0625
OM83
XX
2.5Vpp
2.5Vpp
3.8Vpp
H
H
H
OM83
XX
OM83
XX
OM83
XX
OM83
XX
0.8Vpp
V
OM83
XX
OM8
3XX
OM83
XX
1.2Vpp
2.6Vpp
H
H
TDA93XX
TDA93XX
Circuit Explanation
Summary of Contents for HTN20R15
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Page 26: ...PCB Diagram 3 PCB Diagram ...