Haier HS-2190 Service Manual page 22

Pin
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
23
Green primary color character output
24 Blue primary color character output 0
25 Character blanking
26 Line flyback
27 Field flyback
28 Character oscillating
29 Character oscillating
30 Grounding
31 CPU clock
32 CPU clock
33 CPU reset
34 Vacant pin
35 Infrared receiving input
36 Line synchronizing signal input
37 Clock bus control
N901
Function
TMP87CM38N
Reference Voltage(V)
With signal
Without signal
0 0
4.2 4.2
5.2 5.2
0 0
0 0
0 0
2.1 2.1
1~5.1 0
0 0
1.7 1.7
5.1 5.1
5.1 5.1
2.5 2.5
0 0
5.1 5.1
5.1 5.1
0 0
0 0
0 0
0 0
0 0
0.1 0.1
0 0
0
0.2 0.1
4.2 4.2
4.9 4.9
4.6 5.0
4.0 4.6
0 0
2.1 2.1
2.1 2.1
5.1 5.1
0.5 2.7
5.2 5.2
4.7 5.1
3.0 3.0
Reference
Resistance(KΩ)
Forward
Backward
0 0
66 66
5.3K 3.4K
2.8 3.4K
3.0K 0.9K
5.4K 3.4K
19 1.9K
6.7K 3.4K
28 46
1.0K 42.7
0.7K 12.0
44.2 42.1
51.2 51.2
45 44.2
54 54.8
52.8 53.0
5.6K 5.6K
5.4K 5.4K
5.K 5.K
5.4K 5.4K
0 0
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
40 40
46 46
5.8K 5.8K
5.3K 5.3K
0 0
5.5K 5.5K
5.5K 5.5K
5.1K 5.1K
5.5 3.4K
12K 52.1
0.9 38.3
0.6 12
22