MITSUI MTV-DV05, Руководство по обслуживанию

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SERVICE MANUAL
Table 9 Functions and Service Data of TDA7057AQ (N191)’s Pins
GDM8145 Multimeter
Pin
No.
Function Description
Voltage
(V)
Positive Resistance
(K
Ω )
Negative Resistance
(K
Ω )
1
Volume control input 0.95 6.85 6.15
2
Not connected 0.00
∞ ∞
3
Audio R signal input 2.38 12.59 6.51
4
Supply voltage 17.48 0.47 0.47
5
Audio L signal input 2.37 12.5 6.51
6
Ground 0.00 0.00 0.00
7
Volume control input 0.95 6.85 0.15
8
Left channel in-phase signal output 8016 6.46 5.59
9
Ground 0.00 0.00 0.00
10
Left channel inverting signal output 8.25 6.46 5.59
11
Right channel inverting signal output 8.24 6.46 5.59
12
Ground 0.00 0.00 0.00
13
Right channel in-phase signal output 8.13 6.46 5.59
Table 10 Functions and Service Data of HEF4053 (NK01)’s Pins
GDM8145 Multimeter
Pin
No.
Function Description Voltage
(V)
Positive Resistance
(K
Ω )
Negative Resistance
(K
Ω )
1
Signal input terminal
3.91 6.31 0.12
2
Signal input terminal
5.01 6.31 0.11
3
Signal input terminal
0.00 0.00 3.41
4
Signal output terminal
0.02 6.07 0.05
5
Signal input terminal
0.22 6.17 3.72
6
Ground
0.00 0.00 0.00
7
Ground
0.00 0.017 0.00
8
Ground
0.00 0.017 0.00
9
Control signal input terminal
4.42 6.27 6.08
10
Control signal input terminal
4.42 6.24 6.07
11
Control signal input terminal
4.42 6.24 6.08
12
Signal input terminal
3.30 6.08 3.66
13
Signal output terminal
1.31 5.96 4.72
14
Signal input terminal
1.44 5.95 3.69
15
Signal output terminal
1.43 6.017 4.01
16
Supply voltage
5.04 0.352 0.33
36