Changhong Electric PF29T18 Service Manual page 53

Table 13 Functions and Service Data of AT24C16 (N102)'s Pins
Pin
Functions Description
No.
1 Address input
2 Address input
3 Address input
4 Common ground
5 Serial data
6 Serial clock input
7 Write protect
8 Supply voltage
Table 14 Functions and Service Data of TDA8944J (N603)'s Pins
Pin
Functions Description
No.
1 Negative loudspeaker terminal 1
2 Ground channel 1
3 Supply voltage channel 1
4 Positive loudspeaker terminal 1
5 Not connected
6 Positive input 1
7 Not connected
8 Negative input 1
9 Negative input 2
Mode selection input (standby,
10
mute, operating)
Half supply voltage decoupling
11
(ripple rejection)
12 Positive input 2
SERVICE MANUAL
Reference Voltage
(V)
0
0
0
0
4
4.2
0
4.9
Reference Voltage
(V)
7.98
0
14.9
7.3
0
7.3
0
7.4
7.3
0
7.6
7.3
51
Digital Multimeter
Positive Resistance
(20KΩ)
0
0
0
0
6.37
6.37
0
3.03
Digital Multimeter
Positive Resistance
(20KΩ)
∞
0
5.8
∞
∞
∞
∞
∞
∞
7.8
∞
∞
Negative Resistance
(20KΩ)
0
0
0
0
6.4
6.44
0
3.02
Negative Resistance
(20KΩ)
∞
0
7.7
∞
∞
∞
∞
∞
∞
8.9
∞
∞
(Continued)