Service Manual
Page 1
... restored to its original condition and only parts identical to change without notice. MODEL LC-15AV7U CONTENTS Page SPECIFICATIONS ...1-1 IMPORTANT SAFEGUARDS AND PRECAUTIONS 2-1 STANDARD NOTES FOR SERVICING 3-1 CABINET DISASSEMBLY INSTRUCTIONS 4-1 ELECTRICAL ADJUSTMENT INSTRUCTIONS 5-1 HOW TO INITIALIZE THE LCD TELEVISION 6-1 TROUBLESHOOTING ...7-1 BLOCK DIAGRAMS ...8-1 SCHEMATIC DIAGRAMS/ CBA'S AND TEST POINTS 9-1 WAVEFORMS ...10-1 WIRING DIAGRAM ...11...
... restored to its original condition and only parts identical to change without notice. MODEL LC-15AV7U CONTENTS Page SPECIFICATIONS ...1-1 IMPORTANT SAFEGUARDS AND PRECAUTIONS 2-1 STANDARD NOTES FOR SERVICING 3-1 CABINET DISASSEMBLY INSTRUCTIONS 4-1 ELECTRICAL ADJUSTMENT INSTRUCTIONS 5-1 HOW TO INITIALIZE THE LCD TELEVISION 6-1 TROUBLESHOOTING ...7-1 BLOCK DIAGRAMS ...8-1 SCHEMATIC DIAGRAMS/ CBA'S AND TEST POINTS 9-1 WAVEFORMS ...10-1 WIRING DIAGRAM ...11...
Service Manual
Page 20
TROUBLESHOOTING Table of power circuit. 7-2 5 +35V is not output. 7-2 6 VT+33V is not output. 7-3 7 INV+22V is not output. 7-3 8 DTV-ON+3.3V is not output. 7-3 9 DTV-... be turned on. 7-2 2 The fuse blows out. 7-2 3 When the output voltage fluctuates. 7-2 4 When buzz sound can be heard in the vicinity of Contents for the Troubleshooting Flow Charts Flow Chart No.
TROUBLESHOOTING Table of power circuit. 7-2 5 +35V is not output. 7-2 6 VT+33V is not output. 7-3 7 INV+22V is not output. 7-3 8 DTV-ON+3.3V is not output. 7-3 9 DTV-... be turned on. 7-2 2 The fuse blows out. 7-2 3 When the output voltage fluctuates. 7-2 4 When buzz sound can be heard in the vicinity of Contents for the Troubleshooting Flow Charts Flow Chart No.
Service Manual
Page 48
... it may cause some components in the power supply circuit are not defective before you connect the AC plug to increase the input slowly,when troubleshooting this unit. ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V. MAIN CBA Ref No. Position TRANSISTORS Q708 C-1 Q709 C-2 Q802 D-4 Q901...
... it may cause some components in the power supply circuit are not defective before you connect the AC plug to increase the input slowly,when troubleshooting this unit. ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V. MAIN CBA Ref No. Position TRANSISTORS Q708 C-1 Q709 C-2 Q802 D-4 Q901...
Service Manual
Page 49
... WIRING BOARD. Main CBA Bottom View CAUTION ! Otherwise it may cause some components in order to have the ability to increase the input slowly,when troubleshooting this unit. Also, in the power supply circuit to the AC power supply. WF6 PIN 66 OF IC1202 WF1 PIN 71 OF IC1202 WF7 PIN...
... WIRING BOARD. Main CBA Bottom View CAUTION ! Otherwise it may cause some components in order to have the ability to increase the input slowly,when troubleshooting this unit. Also, in the power supply circuit to the AC power supply. WF6 PIN 66 OF IC1202 WF1 PIN 71 OF IC1202 WF7 PIN...