Service manual

SERVICE MANUAL
IC DATA AND WAVEFORMS OF KEY POINTS
(continued)
29 Clock line 1 4 7 4.54
30 Data line 1 3.5-3.7 7 4.54
31 Overload detecting input terminal 5 3.6 3.34
32
Input terminal for selectable
production modes
5 9.4 5.18
33 Not connected 0.01 9.2 5.46
34 Remote control input 5 9.3 5.43
35 Not connected 0.01 9.4 5.4
36 Comb filter direct-pass control 0.01 7 5.1
37 Mute 0 9.3 5.15
38 Not connected 0 9.4 5.34
39 Not connected 0 9.4 5.3
40 Not connected 0 9.3 5.38
41 Standby control 0 7 4.9
42 YUV switch control 0 5.9 4.93
Table 4 Functions and Service Data of AT24C08-10P (N002)’s Pins
Digital Multimeter
Pin No. Function Description
Reference Voltage(V)
Positive Resistance
(20K
)
Negative Resistance
(20K )
1 Address input 0 0.001 0.00
2 Address input 0 0.001 0.00
3 Address input 0 0.001 0.00
4 Common ground 0 0.001 0.00
5 Clock line 5 7 4.83
6 Data line 4.99 6.9 5.15
7 PW write protect 4.99 9.5 5.31
8 Supply voltage 5 3.5 3.25
Table 5 Functions and Service Data of OM8839PS (N301)’s Pins
Digital Multimeter
Pin No. Function Description
Reference Voltage(V)
Positive Resistance
(20K
)
Negative Resistance
(20K )
1 SIF signal input 0.28 7.9 6.03
2 External audio signal input 3.7 8.3 6.03
3
Reference frequency resonant coil
terminal
0
4
Reference frequency resonant coil
terminal
0
5 PLL filter 2.5 7.5 5.79
6 Video detection output 2.9 2.1 2.19
7 Clock line 3.5-3.6 6.6 4.56
8 Two-way transmission data line 4.02 6.6 4.56
9 Gap decoupling 6.73 7.3 5.66
10 SVHS chroma signal input 1.35 8 5.99
11 SVHS luminance signal input 4 8.3 5.88
12 Supply voltage 8 2.1 2.09
(Continued)
27