Test Point Waveforms - Haier HTAF21C Service Manual

GND(out 1) 3
Out 1 (-) 4
Standby 5
In 1 6
4. N301: Vertical output (TDA8357A)
Symbol PIN
INV IN 1
INV IN 2
Vcc 3
V OUT 4
GND 5
5. U101：Tuner
PIN Function
1 AGC
2 vacant
3 Gnd
4 SCL
5 SDA
6 +5V

6. Test point Waveforms

2.6Vpp
H
TDA8377 PIN38
95Vpp
H
CRT KR
1Vpp
V
TDA8377 PIN21 TDA8377 PIN22
Ch 1Ground
Ch 1 output (-)
Mute input
Ch 1 input
Function
Input
Input
Pump up power
Vertical output
Ground
PIN Function
7 +5V
8 vacant
9 Vt 33V
10 Gnd
11 IF Out
1.2Vpp
H
TDA8377 PIN40
95Vpp
H
CRT KG
CRT KB
1.3Vpp
0.8Vpp
V
TDA8377 PIN59
VOL
Out 2 (-)
GND(out 2)
Out 2 (+)
Symbol
PUMP UP
V OUT
V PRO
V FEEDBACK
3.8Vpp 2.5Vpp
H
H
0.9Vpp
95Vpp
H
H
14
9 Volume Control
10 Ch 2 output (-)
11 Ch 2 Ground
12 Ch 2 output (+)
PIN Function
6 Pump up power
7 Vertical output
8 Vertical protection
9 Vertical feedback
2.5Vpp
H
5Vpp
H