38
LC-26GD4U
TROUBLE SHOOTING TABLE
YES
YES
YES
NO
YES
NO
YES
YES
NO
YES
NO
NO
NO
NO
NO
<Power supply>
No power supply (Front LED is off) or no power-up (Front LED does not change from red to green)
Is power cable properly connected to the main unit?
Is BU+5V line (pin (16) of CN706, pin (8) of CN707 and pin
(4) of CN708) normal?
Is there any defective part or short-circuit in BU+5V line?
Check the 15V line power circuits (T701, T702, F704, Q706-714,
PC703-704, D708-717, IC702, L710, Q733-736, D735-736, D780
and IC706).
Check each DC/DC converter and line (IC707-711 and IC716).
Replace if necessary.
Remove the defective part or short-circuit, and repeat the check.
Is the voltage (approx. 380V) available at C709/C710 when the
power is turned on?
Is the voltage available in 15V line immediately after the power is
turned on?
Is each DC/DC converter output (IC707-711 and IC716) normal?
Reconnect the wire harness, FFC, etc. in the set properly, and
repeat the check.
Check the 380V line power circuits (L703, IC701, Q701-5, D706
and TH701).
Connect the power cable properly, and turn on the power.
Is F701 normal?
Replace F701, and turn on the power. If the fuse is still blown,
replace VA701, VA702, D701, D702, L703, Q701, Q702 and
IC701. Then repeat the check.
Check the BU+5V line power circuits (F703,
D722, IC703, T703, PC702, D761 and IC715).
Are the wire harness, FFC, etc. in the set connected properly?
•
Power switch: Top panel
(Main) Power (DC cutoff: Detected by microprocessor)
[Scheme of power supply system]
[(Main) Power OFF sequence]
1) (Main) Power OFF (DC switch)
2) (Main) Power shutoff is detected by the monitor microprocessor port.
3) Standby request (power cord) is sent to Seine from the microprocessor.
4) Seine shutdown process
5) Reception of shutdown permission from Seine
6) Monitor microcomputer turns off the relay to enter the standby mode.
(Main) Power
Seine
DTV(UR+6V)
Main
Relay
PS-ON
Monitor microprocessor
Backup
Содержание Aquos LC 26GD4U
Страница 52: ...52 8 7 10 9 6 5 4 3 2 1 A B C D E F G H LC 26GD4U OVERALL WIRING DIAGRAM CHASSIS LAYOUT ...
Страница 53: ...53 17 16 19 18 15 14 13 12 11 10 LC 26GD4U ...
Страница 54: ...54 8 7 10 9 6 5 4 3 2 1 A B C D E F G H LC 26GD4U SYSTEM BLOCK DIAGRAM ...
Страница 55: ...55 17 16 19 18 15 14 13 12 11 10 LC 26GD4U ...
Страница 56: ...56 8 7 10 9 6 5 4 3 2 1 A B C D E F G H LC 26GD4U MAIN BLOCK DIAGRAM ...
Страница 57: ...57 17 16 19 18 15 14 13 12 11 10 LC 26GD4U ...
Страница 58: ...58 8 7 10 9 6 5 4 3 2 1 A B C D E F G H LC 26GD4U AV BLOCK DIAGRAM ...
Страница 59: ...59 17 16 19 18 15 14 13 12 11 10 LC 26GD4U ...
Страница 60: ...60 8 7 10 9 6 5 4 3 2 1 A B C D E F G H LC 26GD4U DISPLAY BLOCK DIAGRAM ...
Страница 61: ...61 17 16 19 18 15 14 13 12 11 10 LC 26GD4U ...
Страница 62: ...62 8 7 10 9 6 5 4 3 2 1 A B C D E F G H LC 26GD4U POWER BLOCK DIAGRAM ...
Страница 63: ...63 17 16 19 18 15 14 13 12 11 10 LC 26GD4U ...
Страница 64: ...64 LC 26GD4U 6 5 4 3 2 1 A B C D E F G H DVI Unit Component Side PRINTED WIRING BOARD ASSEMBLIES ...
Страница 70: ...70 LC 26GD4U 8 7 10 9 6 5 4 3 2 1 A B C D E F G H DIGITAL Unit Side A ...
Страница 71: ...71 LC 26GD4U 17 16 19 18 15 14 13 12 11 10 ...
Страница 74: ...74 LC 26GD4U 8 7 10 9 6 5 4 3 2 1 A B C D E F G H DIGITAL Unit Side B ...
Страница 75: ...75 LC 26GD4U 17 16 19 18 15 14 13 12 11 10 ...
Страница 80: ...80 LC 26GD4U 8 7 10 9 6 5 4 3 2 1 A B C D E F G H MAIN Unit Side A ...
Страница 81: ...81 LC 26GD4U 17 16 19 18 15 14 13 12 11 10 ...
Страница 84: ...84 LC 26GD4U 8 7 10 9 6 5 4 3 2 1 A B C D E F G H MAIN Unit Side B ...
Страница 85: ...85 LC 26GD4U 17 16 19 18 15 14 13 12 11 10 ...
Страница 88: ...88 LC 26GD4U 8 7 10 9 6 5 4 3 2 1 A B C D E F G H AV Unit Side A ...
Страница 89: ...89 LC 26GD4U 17 16 19 18 15 14 13 12 11 10 ...
Страница 96: ...96 LC 26GD4U 8 7 10 9 6 5 4 3 2 1 A B C D E F G H POWER Unit Side A ...
Страница 97: ...97 LC 26GD4U 17 16 19 18 15 14 13 12 11 10 ...
Страница 98: ...98 LC 26GD4U 8 7 10 9 6 5 4 3 2 1 A B C D E F G H POWER Unit Side B ...
Страница 99: ...99 LC 26GD4U 17 16 19 18 15 14 13 12 11 10 ...
Страница 100: ...100 LC 26GD4U 8 7 10 9 6 5 4 3 2 1 A B C D E F G H INVERTER Unit Component Side INVERTER GND Unit Component Side ...
Страница 101: ...101 LC 26GD4U 17 16 19 18 15 14 13 12 11 10 ...
Страница 150: ...ËAV Unit 1 5 ...
Страница 151: ...ËAV Unit 2 5 ...
Страница 152: ...ËAV Unit 3 5 ...
Страница 153: ...ËAV Unit 4 5 ...
Страница 154: ...ËAV Unit 5 5 ...
Страница 155: ...ËKEY Unit ...
Страница 156: ...ËR C LED Unit ...
Страница 157: ...ËEXT SP TERMINAL Unit ...
Страница 158: ...ËDVI Unit 1 2 ...
Страница 159: ...ËDVI Unit 2 2 ...
Страница 160: ...ËLCD CONTROL Unit 1 8 ...
Страница 161: ...ËLCD CONTROL Unit 2 8 ...
Страница 162: ...ËLCD CONTROL Unit 3 8 ...
Страница 163: ...ËLCD CONTROL Unit 4 8 ...
Страница 164: ...ËLCD CONTROL Unit 5 8 ...
Страница 165: ...ËLCD CONTROL Unit 6 8 ...
Страница 166: ...ËLCD CONTROL Unit 7 8 ...
Страница 167: ...ËLCD CONTROL Unit 8 8 ...
Страница 168: ...ËDIGITAL Unit 1 20 ...
Страница 169: ...ËDIGITAL Unit 2 20 ...
Страница 170: ...ËDIGITAL Unit 3 20 ...
Страница 171: ...ËDIGITAL Unit 4 20 ...
Страница 172: ...ËDIGITAL Unit 5 20 ...
Страница 173: ...ËDIGITAL Unit 6 20 ...
Страница 174: ...ËDIGITAL Unit 7 20 ...
Страница 175: ...ËDIGITAL Unit 8 20 ...
Страница 176: ...ËDIGITAL Unit 9 20 ...
Страница 177: ...ËDIGITAL Unit 10 20 ...
Страница 178: ...ËDIGITAL Unit 11 20 ...
Страница 179: ...ËDIGITAL Unit 12 20 ...
Страница 180: ...ËDIGITAL Unit 13 20 ...
Страница 181: ...ËDIGITAL Unit 14 20 ...
Страница 182: ...ËDIGITAL Unit 15 20 ...
Страница 183: ...ËDIGITAL Unit 16 20 ...
Страница 184: ...ËDIGITAL Unit 17 20 ...
Страница 185: ...ËDIGITAL Unit 18 20 ...
Страница 186: ...ËDIGITAL Unit 19 20 ...
Страница 187: ...ËDIGITAL Unit 20 20 ...
Страница 188: ...ËPC CARD Unit 1 4 ...
Страница 189: ...ËPC CARD Unit 2 4 ...
Страница 190: ...ËPC CARD Unit 3 4 ...
Страница 191: ...ËPC CARD Unit 4 4 ...
Страница 192: ...ËMAIN Unit 1 13 ...
Страница 193: ...ËMAIN Unit 2 13 ...
Страница 194: ...ËMAIN Unit 3 13 ...
Страница 195: ...ËMAIN Unit 4 13 ...
Страница 196: ...ËMAIN Unit 5 13 ...
Страница 197: ...ËMAIN Unit 6 13 ...
Страница 198: ...ËMAIN Unit 7 13 ...
Страница 199: ...ËMAIN Unit 8 13 ...
Страница 200: ...ËMAIN Unit 9 13 ...
Страница 201: ...ËMAIN Unit 10 13 ...
Страница 202: ...ËMAIN Unit 11 13 ...
Страница 203: ...ËMAIN Unit 12 13 ...
Страница 204: ...ËMAIN Unit 13 13 ...
Страница 205: ...ËPOWER Unit ...
Страница 206: ...ËINVERTER Unit ...
Страница 207: ...ËINVERTER GROUND Unit ...