Haier HT-2599 Service Manual page 19

Pin Function
47 PIF and SIF composite signal
output
48 Intermediate frequency locked
phase loop filtering
49 VCO and SIF grounding
50 Intermediate frequency VCO
51 Intermediate frequency VCO
52 VCO and SIF power supply
53 SIF signal input and horizontal
curve correction
54 SIF smooth filtering
55 External audio input
56 FM DC negative feedback
Pin Function
1 Power supply grounding
2 Tuning voltage output
3 Vacant pin
4 Mute
5 External mute
6 Vacant pin
7 Standby power supply
8 Vacant pin
9 Band 1
10 Band 2
11 Clock bus control
12 Digit bus control
13 AFC input
14 Karaoke switch
15 Keyboard matrix input
16 Keyboard matrix input
17 Vacant pin
18 Vacant pin
19 Vacant pin
20 Vacant pin
21 Grounding
22 Red primary color character
output
Reference Voltage(V) Reference Resistance(KΩ )
Without
signal
N901
Reference Voltage(V)
Without
signal
0
*
5.0
5.0
5.0
0
2.0
1~4.2
0~4.8
0~1.7
5.0
5.0
2.3
0
4.0
4.0
0
0
0
0
0
0
18
With
signal
3.8 3.8
4.7 4.7
0 0
8.1 8.1
8.1 8.1
9.0 9.0
4.5 4.5
5.6 5.6
4.2 4.2
3.5 3.5
TMP87CK38N
With
signal
0
*
5.0
0
0
0
2.0
1~4.2
0~4.8
0~1.7
5.0
5.0
2.3
0
4.0
4.0
0
0
0
0
0
0
Forward(Ω) Backward(Ω)
680
800 2000
0
550 1000
650 1000
450
820 2000
800 1300
800 2000
800 2000
Reference Resistance
Forward(Ω) Backward(Ω)
0
700
700
700
700
700
700
700
700
700
700 15000
600 15000
700
600 10000
700 10000
680 10000
700 10000
700 10000
620 10000
620 10000
0
620
900
0
600
0
8000
8000
8000
8000
8000
8000
8000
3500
3000
3000
0
2200