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5-1
VPH-G90E/G90U/G90M
SECTION 5
CIRCUIT ADJUSTMENTS
Perform this section only when the components of each
board have been replaced. When the completed board had
been replaced, the following adjustments will not be
required.
5-1. POWER BLOCK
5-1-1. DC (
+
+
+
+
+
) Adjustment
1. Remove the GA board, and connect it back through the
extension board.
2. Connect a digital voltmeter to pin 1 and pin 3 of CN11
of the GA board.
3. Adjust RV101 on the GAA board of CN14 side so that
the voltage becomes the following specification.
Specification: 375
±
2 V
4. Connect a digital voltmeter to pin 6 and pin 4 of CN11
of the GA board.
5. Adjust RV101 on the GAA board of CN15 side so that
the voltage becomes the following specification.
Specification: 375
±
2 V
5-1-2.
+
+
+
+
+
115 V Adjustment
1. Remove the GB board, and connect it back through the
extension board.
2. Connect a digital voltmeter to pin 2 and pin 6 of CN34
of the GB board.
3. Adjust RV403 on the GBB board so that the voltage
becomes the following specification.
Specification: 116
±
0.5 V
5-1-3.
+
+
+
+
+
200 V Adjustment
1. Remove the GB board, and connect it back through the
extension board.
2. Connect a digital voltmeter to pin 1 and pin 6 of CN34
of the GB board.
3. Adjust RV404 on the GBB board so that the voltage
becomes the following specification.
Specification: 200
±
1.0 V
5-1-4. Oscillating Frequency Adjustment
1. Remove the GB board, and connect it back through the
extension board.
2. Connect a frequency counter to the gate terminal of Q6
of the GB board.
3. Adjust RV201 on the GBA board so that the frequency
becomes the following specification.
Specification: 85
±
2 kHz
4. Connect a frequency counter to the gate terminal of
Q10 of the GB board.
5. Adjust RV202 on the GBA board so that the frequency
becomes the following specification.
Specification: 95
±
2 kHz
6. Connect a frequency counter to the gate terminal of Q8
of the GB board.
7. Adjust RV402 on the GBB board so that the frequency
becomes the following specification.
Specification: 85
±
2 kHz
8. Connect a frequency counter to the gate terminal of
Q12 of the GB board.
7. Adjust RV401 on the GBB board so that the frequency
becomes the following specification.
Specification: 100
±
2 kHz
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 ...
Страница 474: ...2 3 4 5 A B C D E F G H 1 10 112 10 112 VPH G90J G90E G90U G90M ...
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 ...