akira CT-21CBP5CP, Service Manual

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Model no.: .CT-21CBP5CP.doc
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2 Signal input 3.9 22.2 47.0.
3 Signal input 1.3 21.2 40.0
4 Signal output 2.5 0 0
5 Signal input 2.4 - -
6 Ground 0 0 0
7 Ground 0 0 0
8 Ground 0 0 0
9 Control signal input 0.03 13.5 13.1
10 Contorl signal input 0.03 13.5 13.1
11 Control signal input 0.03 13.5 13.1
12 Signal output 3.9 22.2 47.0
13 Signal input 0.7 22.2 47.0
14 Signal input 3.9 21.9 26.0
15 Audio output 3.9 21.9 26.0
16 Supply voltage 7.8 0 0
Table 6 Function and Service Data of TDA7449 (N650)’s Pins
Digital Multimeter : Victor DT890D
Pin
No.
Symbol
Reference
Voltage
(V)
Positive
Resistance
(K
Ω
)
Nerative
Resistance
(K
Ω
)
1 CREF 4.0 28.2 21.9
2 VS 8.0 1.8 1.8
3 PGND 0 0 0
4 ROUT 3.3 9.4 9.3
5 LOUT 3.3 9.4 9.3
6 R_IN1 4.0 21.9 26.0
7 R_IN2 4.0 26.7 24.3.
8 L_IN1 4.0 26.7 24.3
9 L_IN2 4.0 21.9 26.1
10 MUXOUT(L) 4.0 24.5 22.5
11 MUXOUT(R) 4.0 24.5 22.5
12 BIN(R) 4.0 28.0 26.1
13 BOUT(R) 4.0 28.0 21.0
14 BOUT(L) 4.0 28.0 20.8
15 TREBLE(L) 4.0 28.0 26.1
16 BIN(L) 4.0 30.5 28.0
17 TREBLE(R) 4.0 30.5 28.0
18 DIG_GND 0 0 0
19 SCL 3.4 6.8 6.7
20 SDA 3.1 6.8 6.7