RCA MCR51R410, Service Manual

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SERVICE , MANUAL
Table 7 Functions and Service Data of TDA7057AQ (N191)’s Pins
GDM8145 Multimeter
Pin No.
Function Description
Voltage (V) Positive Resistance (K ) Negative Resistance (K )
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 8 Functions and Service Data of HEF4053BP (NK01)’s Pins
DT890D Digital Multimeter
Ground Resistance (K
ȍ
)
Pin No.
Function Description
Voltage of
Pin (V)
Measure with red
probe while
grounding black
probe. Measure with black
probe while
grounding red
probe.
1 Signal input terminal 3.91 6.31 012
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
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