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LC
-
32DH57E-BK/RU-BK/S-BK
4 – 29
The backlight does not light up.
Do all the fluorescent tubes light up?
YES
Check each fluorescent tube and exchange defective fluorescent
tubes.
NO
Is 60V supplied to Connector (CN7302) (20-23) pin?
NO
Refer to troubleshooting “No power supply (Front LED does not
light up)” of a power supply.
Or check a peripheral circuit. (Q7809, Q7807, Q7811, Q7810)
YES
Is UR12.5V supplied to Connector (CN7302) (10)pin?
NO
Refer to troubleshooting “No power supply” (Front LED does not
light up) of a power supply. Or check a peripheral circuit.
YES
Is UR12.5V supplied to (26) pin of IC7700 (INV-CTL)?
NO
Check UR12.5V-line in an INVERTER unit.
YES
Is the STB-ON/OFF signal supplied to (16) pin (or (4) pin of a
connector (CN7302)) of IC7700 (INV-CTL)?
NO
Check the STB-ON/OFF signal-line in an INVERTER unit.
YES
Is each control signal coming to the connector in INV-UNIT
(CN7302)?
• ADIM (Tube current setting): (1pin)
• OFL (PWM light control signal input): (2pin)
• ERR (Lamp error output): (3pin)
• BRT (Light control method identificatio): (5pin)
NO
Check each control circuit.
ADIM-H: Tube current 12mA, L: Tube current 8.5mA
OFL -H: Lamp ON, L: Lamp OFF
ERR -H: Normal, L: Error
REG2-H: External PWM input, L: Analog voltage input
YES
Is [0] displayed as the number of [LAMP_ERROR] in the process
mode?
NO
Reset the number of [LAMP_ERROR] to the default value in the
process mode.
YES
Is the drive output signal sent from PIN (31) and (32) of IC7700
(INV-CTL)?
NO
Check IC7700 (INV-CTL) and the peripheral circuits.
YES
Does the drive output circuit normally work?
(Q7800-Q7806)
(Q7809, Q7807, Q7811, Q7810)
NO
Check which parts are defective.
And exchange the non-conforming articles.
YES
Is the circuit by the side of secondary operating normally?
(T7903-T7905)
NO
Check defective parts and exchange the inferior products.
YES
Is the circuit by the side of secondary operating normally?
(D7900-D7905)
(D7919/D7921/D7923/D7925/D7927/D7929)
NO
Check defective parts and exchange the inferior products.
Содержание LC-32DH57E-BK
Страница 60: ...LC 32DH57E BK RU BK S BK 5 4 2 2 IC1302 VHiMT8292N 1Y 2 2 1 Block Diagram ...
Страница 71: ...LC 32DH57E BK RU BK S BK 5 15 2 10 IC8401 RH iXC721WJQZQ 2 10 1 Block Diagram ...
Страница 80: ...LC 32DH57E BK RU BK S BK 5 24 M E M O ...
Страница 94: ...LC 32DH57E BK RU BK S BK 8 3 1 2 3 10 9 7 6 5 4 8 J A B C D E F G H I 13 11 19 18 16 15 14 12 17 MAIN Unit 2 ...
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Страница 96: ...LC 32DH57E BK RU BK S BK 8 5 1 2 3 10 9 7 6 5 4 8 J A B C D E F G H I 13 11 19 18 16 15 14 12 17 MAIN Unit 4 ...
Страница 97: ...LC 32DH57E BK RU BK S BK 8 6 1 2 3 10 9 7 6 5 4 8 J A B C D E F G H I 13 11 19 18 16 15 14 12 17 MAIN Unit 5 ...
Страница 98: ...LC 32DH57E BK RU BK S BK 8 7 1 2 3 10 9 7 6 5 4 8 J A B C D E F G H I 13 11 19 18 16 15 14 12 17 MAIN Unit 6 ...
Страница 99: ...LC 32DH57E BK RU BK S BK 8 8 1 2 3 10 9 7 6 5 4 8 J A B C D E F G H I 13 11 19 18 16 15 14 12 17 MAIN Unit 7 ...
Страница 100: ...LC 32DH57E BK RU BK S BK 8 9 1 2 3 10 9 7 6 5 4 8 J A B C D E F G H I 13 11 19 18 16 15 14 12 17 MAIN Unit 8 ...
Страница 101: ...LC 32DH57E BK RU BK S BK 8 10 1 2 3 10 9 7 6 5 4 8 J A B C D E F G H I 13 11 19 18 16 15 14 12 17 MAIN Unit 9 ...
Страница 102: ...LC 32DH57E BK RU BK S BK 8 11 1 2 3 10 9 7 6 5 4 8 J A B C D E F G H I 13 11 19 18 16 15 14 12 17 MAIN Unit 10 ...
Страница 103: ...LC 32DH57E BK RU BK S BK 8 12 1 2 3 10 9 7 6 5 4 8 J A B C D E F G H I 13 11 19 18 16 15 14 12 17 LED Unit ...
Страница 104: ...LC 32DH57E BK RU BK S BK 8 13 1 2 3 10 9 7 6 5 4 8 J A B C D E F G H I 13 11 19 18 16 15 14 12 17 KEY Unit ...
Страница 129: ...LC 32DH57E BK RU BK S BK 23 9 LCD PANEL MODULE 1 2 6 4 7 3 8 5 9 11 14 18 15 24 22 16 21 25 17 20 19 23 26 12 13 10 ...
Страница 132: ...LC 32DH57E BK RU BK S BK 26 11 PACKING PARTS NOT REPLACEMENT ITEM S8 S7 S4 S6 S9 S2 S3 S1 S7 S10 S7 S7 S5 ...