Haier 21F8A - Page 28

27
R
eference voltage V
Reference resistor
No Function
NO signal Ssignal
POSITION
N
egative
21 Cr input 5.3 5.3 820 2000
22 TV data 4.2 4.2 750 2000
23 C input 5.0 5.0 820 2000
24 Video input 2 0.9 0.9 720 900
25 Tv power supply 0.2 0.2 800 2000
26 Video input 2 3.0 3.0 720 15000
27 ABCL 3.0 3.0 720 15000
28 Sound output 9.0 9.0 450 600
29 +9Vpower supply 1.8 2. 8 800 2000
30 PIF output 0.8 0.8 780 2000
31 SIF output 4.8 4.6 780 2000
32 External sound output 2.0 2.0 640 680
33
SIF signal input and horizontel
correction
0 0 0 0
34 DC negative feedback 1.4 1.4 820 2000
35 PIFPLL 2.8 2.8 750 1200
36 +5Vpower supply 5.0 5.0 470 800
37 Filting base 2.6 2.6 800 2000
38 De-emphasis 2.6 2.6 800 2000
39 IF AGC 1.5 1.5 800 3600
40 IF ground 6.4 6.4 800 2000
41 IF input 1.6 1.6 800 2000
42 IF input 0 0 0 0
43 RF AGC 2.8 2.8 800 2000
44 Y/C power supply+5V 3.0 2.0 800 4000
45 Moniter output 2.8 2.8 800 2000
46 Black level stretch filting 5.0 5.0 500 1200
47 Coloy decode PLL 4.7 3.8 680 900
48 Black balance testing 4.4 4.4 800 2000
Circuit Explanation