Service manual

SERVICE MANUAL
Table 12 Functions and Service Data of TDA4605(N811)’s Pins
Digital Multimeter Pin
No.
Function Description
Reference Voltage (V) Positive Resistance (K Ω ) Negative Resistance (K Ω )
1 Regulation control 0.4 0.713 0.4
2 Primary current input 1.34 9.71 1.34
3 Primary voltage monitoring input 1.91 7.09 1.91
4 Ground 0 0 0
5 Drive pulse output 4.08 0.84 4.08
6 Supply voltage 0.74 16.35 4.9
7 Soft-start 2.36 8.69 6.19
8 Zero crossing input detection 0.33 6.72 5.94
Table 13 Functions and Service Data of S3P8849XZZ/ CH12T1007(N001A)’s Pins
Digital Multimeter Pin
No.
Function Description
Reference Voltage (V) Positive Resistance (20K Ω ) Negative Resistance (20K Ω )
1 VT 0.5 103 105.
2 EMC 0 1500 1120.
3 KAV1 0 25.4 25.4
4 KAV2 0 25.5 25.5
5 KAV3 0 25.8 25.8
6 L 4.8 14.3 14.3
7 H 4.8 14.3 14.3
8 U 0 1380 1100.
9 KEYB1 4.8 13.4 13.4
10 KEYB0 4.8 13.4 13.4
11 SCL1 4.8 7 6.8
12 SDA1 4.8 7 6.8
13 GND 0 0 0
14 NC
15 SYS0 0 26 25.3
16 SYS1 3.8 26 25.3
17 STDBY1 4.8 25.6 25.6
18 BASS-SW 3.5 156
19 S-SW 0 20 20
20 Y/C 0 1300 1000
21 HALFTONE 0 25.6 25.6
22 R 0 2.1 2.1
23 G 0 2.1 2.1
24 B 0 2.1 2.1
25 FB 0 2 2
26 HD 3.8 5.5 2
27 VD 4.8 8.7 8.4
28 OSC1 4.8 1300 1000
(continued)
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Service Data of Key IC’s