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1. TROUBLESHOOTING
1.1 No Power
1) Periphery of chassis
1. Is fuse (F601) blown?
Fuse may be opened when either the LAMP indicator or the READY indicator isn't
Illuminated. Check the fuse.
• For continued safety, replace with a fuse of the same type.
TYPE T4.0AH 250V FUSE. (LITTLE FUSE INC. TYPE 215004)
2. Is projection of lamp cover inside broken or not fitting?
Check the INTER LOCK switch(SW904) and lamp cover.
SW904 ...............................................OPEN : abnormal
3. Is thermal switch(SW902) operating?
If temperatures periphery of lamp house reaches 100˚C, the thermal switch will be
turned off automatically.
SW902 ...............................................OPEN : abnormal
4. Is the WARNING TEMP. indicator flashing ? The thermal sensor IC (IC2832) on the
Temp. board or IC2831 on the main board may detect the abnormal temperature
inside of the projector. If one of these ICs detects the abnormal temperature, this
projector will be turned off automatically.
2) Power board
1. Are the LAMP indicator(red) and READY indicator(green) light?
If the LAMP and READY indicators do not illuminated, check the primary circuit and
S6V of standby power supply circuit.
2. Check that the LAMP BST-SW signal is correct.
Pin 12 of K6K .....................................H : ON
3. Check that the 5V_SW signal is correct.
Pin 11 of K6K .....................................H : ON
4. Check that the POWER FAIL signal is correct.
Pin 13 of K6K .....................................L : abnormal
5. Is thermal switch(TSW611) operating?
If temperatures periphery of P.F.C. circuit reaches 95˚C, the thermal switch will be
turned on automatically.
TSW611 .............................................SHORT : abnormal
6. Check the signal at pin 5 of T651. (Switching power IC output signal)
Part 4: Troubleshooting
4-1
Содержание D78-5132
Страница 2: ......
Страница 3: ...CANON Multimedia Projector LV 7105U D78 5132 LV 7105E D78 5133 SERVICE SMANUAL ...
Страница 10: ......
Страница 11: ...Part 1 General Information ...
Страница 12: ......
Страница 33: ...Part 2 Repair Information ...
Страница 34: ......
Страница 54: ......
Страница 55: ...Part 3 Adjustment ...
Страница 56: ......
Страница 77: ...Part 4 Troubleshooting ...
Страница 78: ......
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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