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Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory
8
Confidential
A-4.) Inverter diagram:
1.
Block Diagram:
2. General Specification
Input Voltage: 15V
Input Current: 2A max.
ON/OFF Voltage: 5V
PWM Duty: 5V/50KHz
Output Requirement:
Max. Output Current: 7.5mA
Min. Output Current: 3.3mA
Lamp Working Voltage: 660Vrms
Open Lamp Voltage: 1500Vrms
Frequency: 50KHz
15Vin
ON/OFF
switching
OSCILATOR
CIRCUIT
TRANSFORMER
CCFL
PWM CONTROLLER
TL1451 CIRCUIT
PROTECTION
AND DETECT
ON/OFF
BRT_ADJ
Summary of Contents for Q7T4-FP71G
Page 9: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 9 Confidential Add FFC...
Page 10: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 10 Confidential Add Tape...
Page 14: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 14 Confidential Add one tape...
Page 16: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 16 Confidential Add one screw...
Page 17: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 17 Confidential Add 5 screw...
Page 19: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 19 Confidential Add 2 screw...
Page 21: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 21 Confidential...
Page 22: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 22 Confidential Add one tape...
Page 24: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 24 Confidential Add 4 screw...
Page 25: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 25 Confidential Add 1 screw...
Page 27: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 27 Confidential Finished...
Page 28: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 28 Confidential...
Page 29: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 29 Confidential...
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