Haier 21F8A Service Manual page 27

Function
No
6 Ground
7 Audio input
8 Ripple filt
9 No used
No Function
1 Band 1
2 Band 2
3 Keyboard
4 Data ground
5 CPU reset
6 CPU clock
7 CPU clock
8 Testing
9 + 5 V power
10 Ground
11 Ground
12 Pulse
13 Horizontal output
14 Horizontal AFC1
15 Vertical saw-tooth wave product
16 Vertical saw-tooth wave output
17 Horizontal power
18 No used
19 Cb input
20 Y input
Reference
voltage V
0
1.2
9.3
0.1
N204 TMPA8829B
Reference voltage V
NO signal Ssignal
5.0 5.0
3.5 3.5
9.0 9.0
2.0 2.0
0 0
1.4 1.4
1.2 1.2
6.6 5.0
5.2 4.0
1.8 1.8
3.6 3.6
0 0
0.1 0
1.1 1.1
1.1 1.1
1.1 1.1
9.0 9.0
1.8 2.8
1.8 1.8
3.0 3.0
26
Circuit Explan
Reference resistor K
Position Negative
0 0
0.76 2
0.78 1.9
Reference resistor
POSITION
Negative
800 2000
750 2000
460 600
750 600
0
680 2000
680 2000
680 2000
760 2000
750 3000
820 3000
0
720 650
800 3000
800 3000
800 3000
450 600
760 1500
760 1500
720 1400
0
0