Service Manual
Page 1
SERVICE MANUAL LCD COLOR TELEVISION LC-20AV7U/LC-20SH7U SERVICE MANUAL S37F3LC20AV7U LCD COLOR TELEVISION MODEL LC-20AV7U MODEL LC-20SH7U In the interests of user-safety (Required by safety regulations in some countries) the set ... 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 ...11-1 IC PIN FUNCTION DESCRIPTIONS 12-1 EXPLODED VIEWS ...13-1 MECHANICAL PARTS LIST ...14-1 ELECTRICAL PARTS LIST ...15-1 This document has been published to change without notice. MODELS LC-20AV7U/LC-20SH7U
SERVICE MANUAL LCD COLOR TELEVISION LC-20AV7U/LC-20SH7U SERVICE MANUAL S37F3LC20AV7U LCD COLOR TELEVISION MODEL LC-20AV7U MODEL LC-20SH7U In the interests of user-safety (Required by safety regulations in some countries) the set ... 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 ...11-1 IC PIN FUNCTION DESCRIPTIONS 12-1 EXPLODED VIEWS ...13-1 MECHANICAL PARTS LIST ...14-1 ELECTRICAL PARTS LIST ...15-1 This document has been published to change without notice. MODELS LC-20AV7U/LC-20SH7U
Service Manual
Page 18
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 46
... isolation transformer must be used in the power supply circuit are not defective before you connect the AC plug to increase the input slowly,when troubleshooting this unit. Otherwise it may cause some components in hot circuit is required. Main CBA Top View CAUTION ! ATTENTION : Utiliser un fusible de rechange de...
... isolation transformer must be used in the power supply circuit are not defective before you connect the AC plug to increase the input slowly,when troubleshooting this unit. Otherwise it may cause some components in hot circuit is required. Main CBA Top View CAUTION ! ATTENTION : Utiliser un fusible de rechange de...
Service Manual
Page 47
... for parts in hot circuit is blown , check to see that all components in order to have the ability to increase the input slowly,when troubleshooting this unit. ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V. Because a hot chassis ground is required. Otherwise it may cause...
... for parts in hot circuit is blown , check to see that all components in order to have the ability to increase the input slowly,when troubleshooting this unit. ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V. Because a hot chassis ground is required. Otherwise it may cause...