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5-8
VPH-G90E/G90U/G90M
5-4-17. D/A Converter Offset Adjustment
(DD Board)
1. Pull out the DB board, then inset the extension board
instead. Short-circuit pins B32 and C32 of the
extension board’s connector with a jumper wire.
2. Short-circuit both ends of capacitors C136 and C342 on
the DD board with a jumper wires respectively.
3. Turn on the power.
4. Adjust RV301 so that the voltage at pin-A5 of CN211
is 0
±
0.01 Vdc.
5. Adjust RV302 so that the voltage at pin-A3 of CN211
is 0
±
0.01 Vdc.
6. Adjust RV303 so that the voltage at pin-A1 of CN211
is 0
±
0.01 Vdc.
7. Adjust RV304 so that the voltage at pin-A11 of CN211
is 0
±
0.01 Vdc.
8. Adjust RV305 so that the voltage at pin-A9 of CN211
is 0
±
0.01 Vdc.
9. Adjust RV306 so that the voltage at pin-A7 of CN211
is 0
±
0.01 Vdc.
5-4-12. HS
x
x
x
x
x
VS Waveform Adjustment
(DB Board)
1. Input the signal of its frequency is 64 kHz.
2. Set the data value of H SIZE COARSE to “250.”
3. Set the data value of V SIZE COARSE to “180.”
4. Connect an oscilloscope to TP601.
5. Adjust RV601 so that A section of a waveform become
even as shown in the figure.
6. Adjust RV602 so that A section is 0 V.
5-4-13. HP
x
x
x
x
x
VS Waveform Adjustment
(DB Board)
1. Input the signal of its frequency is 64 kHz.
2. Set the data value of H SIZE COARSE to “250.”
3. Set the data value of V SIZE COARSE to “180.”
4. Connect an oscilloscope to TP602.
5. Adjust RV603 so that A section of a waveform become
even as shown in the figure.
A
6. Adjust RV604 so that A section is 0 V.
5-4-14. B KEY Waveform Adjustment
(DB Board)
1. Input the signal of its frequency is 64 kHz.
2. Set the data value of H SIZE COARSE to “250.”
3. Set the data value of V SIZE COARSE to “180.”
4. Connect an oscilloscope to TP502.
5. Adjust RV502 so that A section is 0 V.
A
B
+
_
A
5-4-15. T KEY Waveform Adjustment
(DB Board)
1. Input the signal of its frequency is 64 kHz.
2. Set the data value of H SIZE COARSE to “250.”
3. Set the data value of V SIZE COARSE to “180.”
4. Connect an oscilloscope to TP501.
5. Adjust RV501 so that A section is 0 V.
A
5-4-16. 1/2H Switching Waveform Adjustment
(DA/DB Boards)
1. Input the signal of its frequency is 15 kHz.
2. Connect an oscilloscope to TP501 on the DB board.
3. Adjust RV303 on the DA board so that the switching
point (A) coincides with 0V cross-point as shown in the
figure.
B
A
Содержание VPH-G90E
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Страница 122: ...2 2 VPH G90E G90U G90M 2 1 3 Location 3 ME MB MC PB M L MA BA F BC NA BB ...
Страница 128: ...2 8 VPH G90E G90U G90M 2 2 8 Remote Commander Removal 1 Two screws BVTP 3 x 12 2 Remote commander A CN1 ...
Страница 144: ...2 24 VPH G90E G90U G90M XA board A 1390 918 A XB board A 1390 919 A XC board A 1501 447 A 2 2 25 Extension Board ...
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Страница 337: ...9 1 9 1 VPH G90E G90U G90M SECTION 9 BLOCK DIAGRAMS ...
Страница 363: ...2 3 4 5 A B C D E F G H 1 10 1 10 1 VPH G90J G90E G90U G90M SECTION 10 DIAGRAMS ...
Страница 408: ...2 3 4 5 A B C D E F G H 1 10 46 10 46 VPH G90J G90E G90U G90M BC BC BC BOARD BC A SIDE SUFFIX 11 BC B SIDE SUFFIX 11 ...
Страница 437: ...2 3 4 5 A B C D E F G H 1 10 75 10 75 VPH G90J G90E G90U G90M ...
Страница 438: ...2 3 4 5 A B C D E F G H 1 10 76 10 76 VPH G90J G90E G90U G90M DC A SIDE SUFFIX 11 DC DC DC BOARD ...
Страница 439: ...2 3 4 5 A B C D E F G H 1 10 77 10 77 VPH G90J G90E G90U G90M DC DC DC BOARD DC B SIDE SUFFIX 11 ...
Страница 462: ...2 3 4 5 A B C D E F G H 1 10 100 10 100 VPH G90J G90E G90U G90M E A SIDE SUFFIX 11 E E E BOARD ...
Страница 463: ...2 3 4 5 A B C D E F G H 1 10 101 10 101 VPH G90J G90E G90U G90M E E E BOARD E B SIDE SUFFIX 11 ...
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Страница 516: ...2 3 4 5 A B C D E F G H 1 10 154 10 154 VPH G90J G90E G90U G90M F F F BOARD F A SIDE SUFFIX 11 F B SIDE SUFFIX 11 ...
Страница 518: ...2 3 4 5 A B C D E F G H 1 10 156 10 156 VPH G90J G90E G90U G90M GA GA GA BOARD GA A SIDE SUFFIX 11 ...
Страница 519: ...2 3 4 5 A B C D E F G H 1 10 157 10 157 VPH G90J G90E G90U G90M GA GA GA BOARD GA B SIDE SUFFIX 11 ...
Страница 522: ...2 3 4 5 A B C D E F G H 1 10 160 10 160 VPH G90J G90E G90U G90M GB GB GB BOARD GB A SIDE SUFFIX 11 ...
Страница 523: ...2 3 4 5 A B C D E F G H 1 10 161 10 161 VPH G90J G90E G90U G90M GB GB GB BOARD GB B SIDE SUFFIX 11 ...
Страница 530: ...2 3 4 5 A B C D E F G H 1 10 168 10 168 VPH G90J G90E G90U G90M GC GC GC BOARD GC A SIDE SUFFIX 11 GC B SIDE SUFFIX 11 ...
Страница 532: ...2 3 4 5 A B C D E F G H 1 10 170 10 170 VPH G90J G90E G90U G90M M M M BOARD M A SIDE SUFFIX 11 ...
Страница 533: ...2 3 4 5 A B C D E F G H 1 10 171 10 171 VPH G90J G90E G90U G90M M M M BOARD M B SIDE SUFFIX 11 ...
Страница 537: ...2 3 4 5 A B C D E F G H 1 10 175 10 175 VPH G90J G90E G90U G90M MA MA MA BOARD MA A SIDE SUFFIX 11 MA B SIDE SUFFIX 11 ...
Страница 546: ...English 98LT0812 1 Printed in Japan 1998 12 9 929 608 01 Sony Corporation Broadcasting Professional Systems Company ...