3) Main board
1. Check that the 15.5V is observed at pins 1-3 of K3C.
2. Check that the 6V is observed at pins 6-8 of K3C.
3. Check that the -5V is observed at pin 9 of K3C.
4. Check that the 5V is observed at pins 10-11 of K3C.
5. Check that the 6V is observed at pins 2-4 of K3D.
6. Check that the 15.5V is observed at pins 7-8 of K3D.
7. Check that the 5V_SW signal is correct.
Pin 11 of K3D.....................................H : ON
8. Check that the LAMP BST_SW signal is correct.
Pin 12 of K3D.....................................H : ON
9. Check that the POWER FAIL signal is correct.
Pin 13 of K3D.....................................L : abnormal
10. Check that the 12V is observed at test points TP6601. TP6602 and TP6603.
11. Check that the LAMP_SW signal is correct.
Pin 4 of K8CC.....................................H : On
12. Check that the LAMP_ERR signal is correct.
Pin 1 of K8CC.....................................L : On
13. Check that the POWER FAIL signal is correct.
Pin 2 of IC1851 ..................................L : abnormal
14. Check that the Sensor IC(IC2831) detects abnormal temperature inside the projector.
4) Component board
1. Check Power Supply and switching circuit
Check ICs IC2641 to IC2691
2. Check that the POWER FAIL signal is correct.
Pin 11-12 of K3A ................................L : abnormal
3. Check that the FAN_DRIVE signal is correct.
Pin 7-8 of K3A ....................................H : On
Part 4: Troubleshooting
4-2
Содержание D78-5132
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Страница 3: ...CANON Multimedia Projector LV 7105U D78 5132 LV 7105E D78 5133 SERVICE SMANUAL ...
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Страница 11: ...Part 1 General Information ...
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Страница 33: ...Part 2 Repair Information ...
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Страница 55: ...Part 3 Adjustment ...
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Страница 77: ...Part 4 Troubleshooting ...
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Страница 81: ... Memo Part 4 Troubleshooting 4 3 ...
Страница 91: ...Part 4 Troubleshooting 4 13 TP561 S H B INTPUT TP571 TP1571 S H B OUTPUT TP505B TP506B S H B OUTPUT ...
Страница 92: ...Part 4 Troubleshooting 4 14 4 IC BLOCK DIAGRAMS FA5332M Power Factor Control IC01 AN5265 AUDIO OUTPUT IC001 ...
Страница 93: ...Part 4 Troubleshooting 4 15 PW164 10RK System Control Scan Converter IC301 CXA2111R LCD Driver IC401 ...
Страница 94: ...Part 4 Troubleshooting 4 16 M62358FP DAC IC431 CXD3503R White Uniformity Compensation IC471 ...
Страница 96: ...Part 4 Troubleshooting 4 18 IDT71V016S RAM IC811 CXA2016S Sync Separator IC1021 ...
Страница 97: ...Part 4 Troubleshooting 4 19 MC10H351ML IC1501 LM76CHMX Thermal Sensor IC1831 IC1832 ...
Страница 99: ...Part 4 Troubleshooting 4 21 TC4053BF Switching IC5001 SAA7114H Digital Video Processor IC5101 ...
Страница 100: ...Part 4 Troubleshooting 4 22 ...
Страница 101: ...Part 5 Parts Catalog ...
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Страница 103: ...PARTS CATALOG Multimedia Projector LV 7105U REF NO D71 5132 LV 7105E D71 5133 Power Projector LV 7105J D71 5131 ...
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Страница 113: ...U 1 U 2 V 1 V 2 W 1 X 1 Z Page 5 CANON LV 7105J REF No D78 5131 LV 7105U D78 5132 LV 7105E D78 5133 ...
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Страница 118: ...Part 6 Electrical Diagrams ...
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