-27-
Electrical Adjustments
1. Receive the 16-step grey scale computer signal.
2. Set to
COMPUTER
mode.
3. Enter the service mode.
[R-SIGNAL CENTER ADJUSTMENT]
4. Connect a digital voltmeter to test point “
TP25R1
” (+)
and chassis ground (-).
5. Select group no. “
3
”, item no. “
0
” and change data
value to adjust the voltage to be 7.30 ±0.05V.
[G-SIGNAL CENTER ADJUSTMENT]
6. Connect a digital voltmeter to test point “
TP25G1
” (+)
and chassis ground (-).
7. Select group no. “
3
”, item no. “
1
” and change data
value to adjust the voltage to be 7.30 ±0.05V.
[B-SIGNAL CENTER ADJUSTMENT]
8. Connect a digital voltmeter to test point “
TP25B1
” (+)
and chassis ground (-).
9. Select group no. “
3
”, item no. “
2
” and change data
value to adjust the voltage to be 7.30 ±0.05V.
1. Receive the 16-step grey scale computer signal.
2. Set to
COMPUTER
mode.
3. Connect an oscilloscope to test point “TP3551” (+)
and chassis ground (-).
4. Enter the service mode, select group no. “
3
”, item no.
“
7
” and change data value to adjust amplitude “a” to
be 5.5 ±0.1V.
(a)
Signal Center adjustment
NRS adjustment
1. Receive the 16-step grey scale computer signal.
2. Set to
COMPUTER
mode.
3. Enter the service mode.
[R-BLACK ADJUSTMENT]
4. Connect an oscilloscope to test point “
TP25R1
” (+)
and chassis ground (-).
5. Select group no. “
3
”, item no. “
3
” and change data
value to adjust amplitude “a” to be 10.0 ±0.1V.
[R-BLACK ADJUSTMENT-]
6. Connect an oscilloscope to test point “
TP25G1
” (+)
and chassis ground (-).
7. Select group no. “
3
”, item no. “
4
” and change data
value to adjust amplitude “a” to be 10.0 ±0.1V.
[R-BLACK ADJUSTMENT-]
8. Connect an oscilloscope to test point “
TP25B1
” (+)
and chassis ground (-).
9. Select group no. “
3
”, item no. “
5
” and change data
value to adjust amplitude “a” to be 10.0 ±0.1V.
(a)
black level
black level
Black Level adjustment
Summary of Contents for 1 122 121 00
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Page 49: ... 49 CXD2064Q Digital Comb Filter IC2101 L3E01031 Level Shift IC3531 IC3561 IC Block Diagrams ...
Page 51: ... 51 ML60851 USB I F IC9801 M62393 D A IC2571 IC Block Diagrams ...
Page 52: ... 52 TA1318N AFC Detector IC6171 TB1274AF Video Decoder IC1101 IC Block Diagrams ...
Page 79: ...MD8 XU3100 79 46 44 44 46 44 44 Optical Parts List 46 57 56 46 46 ...
Page 80: ...MD8 XU3100 80 44 44 54 67 Red 68 Green 69 Blue 44 44 44 Optical Parts List ...
Page 81: ...MD8 XU3100 81 43 43 53 a Red 53 b Green 53 c Blue 61 44 44 46 43 46 53 Optical Parts List ...
Page 82: ...MD8 XU3100 82 52 a 52 45 45 45 45 52 Optical Parts List ...
Page 83: ...MD8 XU3100 83 Optical Parts List 58 70 63 71 57 60 65 59 64 66 51 55 62 ...
Page 84: ... MD8A Apr 2002 BB Printed in Japan SANYO Electric Co Ltd ...
