Service manual

SERVICE MANUAL
IC DATA AND WAVEFORMS OF KEY POINTS
(continued)
25 LinTV2 5 7.6 5.82
26 Yin 5 7.7 5.82
27 RinV2 5 7.6 5.82
28 Vin 5 7.8 5.6
29 Vcc 8 4.9 4.1
30 Cout 3.41 5.2 0.2
31 Rout1 3.89 0.2 5.46
32 Yout 3.42 7.4 0.2
33 Lout1 3.89 0.2 5.46
34 Vout1 4 7.4 0.2
35 RoutTV 3.89 0.2 5.48
36 LoutTV 3.89 7.4 5.48
Table 13 Functions and Service Data of TC90A13N (NK02)’s Pins
Digital Multimeter
Pin No. Function Description
Reference Voltage(V)
Positive Resistance
(20K
)
Negative Resistance
(20K )
1 Bios fos ACD 1.46 0.4 0.42
2 GND for ACD 0.01 0.001
3 VDD for ACD 4.83 0.7 0.91
4 Bios for ACD 3.37 0.7 0.78
5 Video input 2.22 6.7 5.79
6 Bios for ACD 1.44 6.7 5.91
7 Clamp filter 3.18 6.7 5.92
8 Test terminal 0.01 0.001 0.00
9 Bios for line memory 2.44 5 4.73
10 Vco filter 1.57 6.7 5.92
11 Clock input 2.25 6.7 5.92
12 VDD for PLL 4.83 0.6 0.91
13 GND for PLL 0.01 0.001 0.00
14 L:Color; H:B/W mode 0.07 6.5 5.45
15 CBPF 0.01 0.001 0.00
16 VENHO 0.01 0.001 0.00
17 VENH1 0.01 0.001 0.00
18 IL LINE 4.83 0.7 0.91
19 CORING 0.01 0.001 0.00
20 VDD3 4.82 0.7 0.91
21 VSS3 0.01 0.001 0.00
22 BIAS3 3.44 6.6 5.91
(Continued)
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