37
XG-NV5XB
TROUBLE SHOOTING TABLE
(Continued)
No audio output
Yes
No
Check the input, the switching circuit
of IC3303 and IC3304, and their
peripheral circuit,SC3001,SC1502,etc.
Are there audio signal inputs at pin
(2) of IC1411?
Yes
No
Check the IC1411 control voltage,and
its peripheral circuits.
Are there audio signal outputs at pin
(2) of P5508?
Yes
No
Check IC7301 and its peripheral
circuits.
Are there audio signal outputs at pin
(6) of IC7301?
Check IC7301 and its peripheral
circuits, and the SP connectors and
speakers.
If the voltage at pin (2) of IC7301 is
not as specified, check Q5501,
Q5502 and their peripheral circuits.
Checkig the Power Unit
There is no voltage output at
EA connector.
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
Is there any other output
voltage failure?
Is EA connector disconnected
or loose?
Is AC voltage (85-264V)
applied across the PA
connector?
Is Q704 open?
Is there short-circuit between
collector and emitter of Q752?
Reconnect the EA connector.
Replace F701.
Which output voltage line fails?
Replace ICP751.
Replace R752.
Replace Q752.
Replace PC702.
Replace IC702, T701 or Q704.
P-FAN Vcc
-7
Содержание XG-NV5XB
Страница 11: ...11 XG NV5XB Connection Pin Assignments ...
Страница 47: ...49 XG NV5XB 48 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H BLOCK DIAGRAM ...
Страница 48: ...51 XG NV5XB 50 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H OVERALL WIRING DIAGRAM ...
Страница 50: ...55 XG NV5XB 54 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë SIGNAL UNIT 1 2 ...
Страница 51: ...57 XG NV5XB 56 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë IR DA and SIGNAL UNIT 2 2 ...
Страница 52: ...59 XG NV5XB 58 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë OUTPUT UNIT 1 5 Drawing with small PWB attached 2 ...
Страница 53: ...61 XG NV5XB 60 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë OUTPUT UNIT 2 5 Drawing with small PWB attached 2 ...
Страница 55: ...65 XG NV5XB 64 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë OUTPUT UNIT 4 5 Drawing with small PWB attached 2 ...
Страница 56: ...67 XG NV5XB 66 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë OUTPUT UNIT 5 5 Drawing with small PWB attached 2 ...
Страница 57: ...69 XG NV5XB 68 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë OUTPUT SMALL PWB ...
Страница 63: ...81 XG NV5XB 80 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë VIDEO UNIT ...
Страница 64: ...83 XG NV5XB 82 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë PC TERMINAL UNIT ...
Страница 65: ...85 XG NV5XB 84 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë SOUND OUT REGULATOR UNIT ...
Страница 66: ...87 XG NV5XB 86 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë OPERATION KEY UNIT ...
Страница 68: ...91 XG NV5XB 90 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë POWER UNIT B PWB B CDENC0284CE02 ...
Страница 69: ...93 XG NV5XB 92 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë POWER UNIT C PWB C CDENC0284CE02 ...
Страница 70: ...95 XG NV5XB 94 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë PC I F UNIT 1 8 ...
Страница 71: ...97 XG NV5XB 96 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë PC I F UNIT 2 8 ...
Страница 72: ...99 XG NV5XB 98 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë PC I F UNIT 3 8 ...
Страница 73: ...101 XG NV5XB 100 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë PC I F UNIT 4 8 ...
Страница 74: ...103 XG NV5XB 102 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë PC I F UNIT 5 8 ...
Страница 75: ...105 XG NV5XB 104 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë PC I F UNIT 6 8 ...
Страница 76: ...107 XG NV5XB 106 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë PC I F UNIT 7 8 ...
Страница 77: ...109 XG NV5XB 108 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë PC I F UNIT 8 8 ...
Страница 82: ...114 XG NV5XB 6 5 4 3 2 1 A B C D E F G H Output Unit Wiring Side Drawing with small PWB attached 3 ...
Страница 83: ...115 XG NV5XB 6 5 4 3 2 1 A B C D E F G H Output Unit Component Side Drawing with small PWB attached 3 ...
Страница 84: ...116 XG NV5XB 6 5 4 3 2 1 A B C D E F G H PC I F Unit Wiring Side ...
Страница 85: ...117 XG NV5XB 6 5 4 3 2 1 A B C D E F G H PC I F Unit Component Side ...
Страница 86: ...118 XG NV5XB 6 5 4 3 2 1 A B C D E F G H Power Unit Wiring Side PWB A PWB B PWB C ...
Страница 87: ...119 XG NV5XB 6 5 4 3 2 1 A B C D E F G H Power Unit Component Side PWB A PWB B PWB C ...
Страница 88: ...120 XG NV5XB 6 5 4 3 2 1 A B C D E F G H Inlet Unit Wiring Side Inlet Unit Component Side ...
Страница 89: ...121 XG NV5XB 6 5 4 3 2 1 A B C D E F G H Operation Key Unit Wiring Side Operation Key Unit Component Side ...
Страница 90: ...122 XG NV5XB 6 5 4 3 2 1 A B C D E F G H S Out REG Unit Wiring Side S Out REG Unit Component Side ...