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)
39
Service Data of Key IC’s
