Haier HT-2180, Руководство по обслуживанию

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30
Reference Voltage(V) Reference Resistance Pin Function
Without
signal
With
signal
Forward(
Ω
) Backward(
Ω
)
23 Green primary color
character output
0 0 620 2200
24 Blue primary color
character output 0 0 620 2200
25 Character blanking 0 0 620 2200
26 Line flyback 4.0 4.0 680 10000
27 Field flyback 4.8 4.8 680 10000
28 Character oscillating 5.0 5.0 600 10000
29 Character oscillating 5.0 5.0 0 10000
30 Grounding 0 0 0 0
31 CPU clock 2.1 2.1 700 10000
32 CPU clock 2.1 2.1 700 10000
33 CPU reset 5.0 5.0 650 40000
34 Vacant pin 5.0 5.0 700 10000
35 Infrared receiving input 5.0 5.0 700 10000
36 Line synchronizing signal
input
4.7 4.7 700 10000
37 Clock bus control 2.9 2.9 700 10000
38 Data bus control 3.2 3.2 700 10000
39 Vacant pin 0 0 700 10000
40 Vacant pin 4.6 4.6 700 10000
41 Vacant pin 0 0 700 10000
42 Power supply 5.0 5.0 420 2700
N101 LA7910
Reference
Voltage(V)
Reference Resistance
Pin Function
Without signal Forward(K
Ω
) Backward(K
Ω
)
1 Output (BU) 1.7 120 7.2
2 Output (BH) 12.6 17.5 7.5
3 Control input 4.8 6.5 8.5
4 Control input 0 6.5 9.0
5 Grounding terminal 0 0 0
6 Power input terminal 1 14.0 6.0 50
7 Output (BL) 0 1.5 1.5
8 Vacant pin 0 8.5
9 Power input terminal 2 12 0.5 0.5
Circuit Explanation