10
In 1
6
Ch 1 input
Out 2 (+)
12
Ch 2 output (+)
4. N301: Vertical output (TDA8357A)
Symbol PIN
Function
Symbol
PIN Function
INV IN
1
Input
PUMP UP
6
Pump up power
INV IN
2
Input
V OUT
7
Vertical output
Vcc
3
Pump up power
V PRO
8
Vertical protection
V OUT
4
Vertical output
V FEEDBACK
9
Vertical feedback
GND 5
Ground
5. U101
：
Tuner
PIN Function
PIN Function
1 AGC
7 +5V
2 vacant
8 vacant
3 Gnd
9 Vt
33V
4 SCL
10 Gnd
5 SDA
11 IF
Out
6 +5V
6. Test point Waveforms
7. IC voltages
5Vpp
0.9Vpp
1.3Vpp
H
H
1Vpp
V
CRT KB
CRT KG
CRT KR
95Vpp
95Vpp
95Vpp
H
H
H
TDA9370PIN53
2.5Vpp
2.5Vpp
3.8Vpp
H
H
H
TDA9370PIN52
TDA9370 PIN51
TDA9370 PIN33
TDA9370 PIN34
0.8Vpp
V
TDA9370 PIN21
TDA9370 PIN22
TDA9370 PIN59
1.2Vpp
2.6Vpp
H
H
TDA9370 PIN40
TDA9370 PIN38
