14
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 (+)
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
5Vpp
0.9Vpp
1.3Vpp
H
H
1Vpp
V
CRT KB
CRT KG
CRT KR
95Vpp
95Vpp
95Vpp
H
H
H
2.5Vpp
2.5Vpp
3.8Vpp
H
H
H
0.8Vpp
V
TDA8377 PIN21
TDA8377 PIN22
TDA8377 PIN59
1.2Vpp
2.6Vpp
H
H
TDA8377 PIN40
TDA8377 PIN38
Summary of Contents for HTAF21C
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