Service manual

SERVICE MANUAL
No. Reference Voltage (V) Positive Resistance (20K Ω ) Negative Resistance (20K Ω )
29 OSC2 4.8 1300 1000
30 TEST 0 0 0
31 XIN 1.7 1500 1100
32 XOUT 1.5 1500 1100
33 RESET 4.8 12.2 12.1
34 VCC 4.8 3.4 3.4
35 P/N 0 1500 1100
36 RMT 4.8 20.4 20
37 GND 0 0 0
38 MUTE 4.8 25.7 25.6
39 W/R 3 25.7 25.6
40 SCL 3.5 6.8 6.8
41 SDA 3.5 6.8 6.8
42 STANDBY 0 8.2 8.1
Table 14 Functions and Service Data of AT24C08-10P (N002)’s Pins
Digital Multimeter Pin
No.
Function Description
Reference Voltage (V) Positive Resistance (20K Ω )
1 Address input 0.00 0.00 0.00
2 Address input 0.00 0.00 0.00
3 Address input 0.00 0.00 0.00
4 Common ground 0.00 0.00 0.00
5 Clock line 4.94 6.85 4.83
6 Data line 4.94 6.89 5.15
7 PW write protect 4.94 9.58 6.31
8 Supply voltage 4.94 3.5 3.25
Negative Resistance (20K Ω )
Table 15 Functions and Service Data of OM8839PS (N301)’s Pins
Digital Multimeter Pin
No.
Function Description
Reference Voltage (V) Positive Resistance (20K Ω ) Negative Resistance (20K Ω )
1 SIF signal input 0.00 8.8 6.03
2 External audio signal input 3.61 8.69 6.03
3 Reference frequency resonant coil terminal 0.00
∞ ∞
4 Reference frequency resonant coil terminal 0.00
∞ ∞
5 PLL filter 2.45 8.54 5.79
6 Video detection output 2.77 2.19 2.19
7 Clock line 3.85 6.88 4.56
8 Two-way transmission data line 3.91 6.87 4.56
9 Gap decoupling 6.62 7.57 5.66
10 SVHS chroma signal input 1.37 8.65 5.99
11 SVHS luminance signal input 3.85 8.65 5.88
12 Supply voltage 8.22 2.09 2.09
13 Composite video signal input terminal 3.69 8.65 5.88
14 Ground 0.00 0.00 0.01
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continued
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