Service manual

SERVICE MANUAL
IC DATA AND WAVEFORMS OF KEY POINTS
(continued)
Table 6 Functions and Service Data of TDA8350Q-N6 (N401)’s Pins
Digital Multimeter
Pin No. Function Description
Reference Voltage(V)
Positive Resistance
(20K
)
Negative Resistance
(20K )
1 Vertical drive input (positive) 2.16 9 5.8
2 Vertical drive input (negative) 2.16 9 5.83
3 Feedback input 10.09 5.8 4.71
4 Supply voltage 19.49 6.4 4.2
5 Output 1 10.09 5.8 4.71
6 Not connected 0
7 Ground 0 0.001 0.00
8 Pump supply voltage input 51.3
9 Output 2 9.85 9.8 4.7
10 Guard output 0.28 9.1 5.88
11 Pincushion output 20 9 5.24
12 Pincushion input (negative) 0.71 8.5 6.97
13 Pincushion input (positive) 0 0.01 6.88
Table 7 Functions and Service Data of TDA7057AQ (N601)’s Pins
Digital Multimeter
Pin No. Function Description
Reference Voltage(V)
Positive Resistance
(20K
)
Negative Resistance
(20K )
1 Volume control input 0.99 15.3 6.15
2 Not connected 0
3 Audio R signal input 2.4 6.51
4 Supply voltage 16 9 0.47
5 Audio L signal input 2.4 6.51
6 Ground 0 0.001 0.00
7 Volume control input 1 15.6 0.15
8 Left channel in-phase signal output 8 12.3 5.59
9 Ground 0 0.001 0.00
10 Left channel inverting signal output 8 12.6 5.59
11
Right channel inverting signal
output
8 12.6 5.59
12
Ground 0 0.001 0.00
13
Right channel in-phase signal
output
8 12.6 5.59
Table 8 Functions and Service Data of TDA6108JF’s Pins
Digital Multimeter
Pin No. Function Description
Reference Voltage(V)
Positive Resistance
(20K
)
Negative Resistance
(20K )
1
G inverting input 2.7 5.4 4.72
2
R inverting input 2.6 5.4 4.72
3
B inverting input 2.7 5.4 4.72
4 Ground 0 0.001 0.00
5 Black level current input 6.25 17.3 5.65
(Continued)
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