akira CT-21XF9, Руководство по обслуживанию

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Model No: CT-21XF9A
Version 1.0
9. Repair data for IC SAA5261
The SAA5261 is a teletext signal processor.
The pin functions and repair data of TDA7449 is listed in the table 11
Table 11 Pin functions and repair data of SAA5261
Digital multimeter (GDM8145)
Resistance for GND
(R x 200KÙ)
Pin Symbol Quiescent
state (V) Dynamic
state (V)
Red pen
measure
Black
pen
measure
1 VO 0.32 0.02 23.89 12.66
2 V1 0.29 0.12 24.92 13.15
3 V2 0.30 0.02 24.45 13.18
4 V3 0.26 0.02 23.80 13.20
5 V4 0.24 0.04 24.64 13.20
6 V5 0.25 0.04 21.44 13.21
7 V6 0.25 0.02 24.81 13.19
8 V7 0.24 0.05 23.90 13.25
9 RESERVED 0.24 0.04 27.32 13.24
10 RESERVED 0.25 0.05 26.22 13.32
11 RESERVED 0.13 0.04 20.63 13'24
12 RESERVED 0.31 0.07 20.97 13.08
13 VSS2 0.04 0.01 0.00 0.00
14 SCL1 2.81 1.70 15.14
15 SDA1 0.81 1.70 15.01
16 RESERVED 0.28 0.08 26.23 13.36
17 RESERVED 0.33 0.08 20.81 13.32
18 H.mode 0.09 0.01 20.53 13.35
19 V.mode 0.07 0.01 18.31 11.37
20 PDI 0.10 0.01 18.25 11.28
21 Ph.
LOCKED
0.08 0.01 20.81 13.22
22 VSS1 0.11 0.01 0.00 0.00
23 CVBS0 0.06 0.17 36.16 14.16
24 CVBS1 5.73 0.01 36.19 14.26
25 BLACK 6.20 0.01 38.72 14.31
26 Iref 6.56 0.23 27.06 12.28
27 FRAME 0.01 0.01 36.32 14.46
28 VSS 0.01 0.01 0.00 0.00
29 /COR 0.01 1.13 20.98 13.03
30 PON 0.01 1.13 28.90 13.01
31 RGBref 0.01 0.01 15.67 10.01
32 B 0.01 0.01 1.00 1.00
33 G 0.01 0.01 1.00 0.99
34 R 0.01 0.01 1.00 1.00
35 VDS 0.01 0.01 17.03 14.88
36 HSYNC 0.19 0.83 44.19 12.75
37 VSYNC 0.01 0.66 40.32 12.92
38 VDD1 0.01 0.01 0.00 0.00
39 VDD2 0.01 0.01 15.69 10.00
40 OSDGND 0.01 0.01 0.01 0.01