FUNAI LCD-A2006, Service Manual

Page 1: ...SERVICE MANUAL 20 COLOR LCD TELEVISION LCD A2006 LCD B2006 LCD C2006 LCD D2006 ...

Page 2: ...CBA CN310 To Speaker Function CBA CN801 To Speaker CLN53 CN101A CN102A CN103A CN101B CN102B CN103B Main CBA CN404 CN304 Inverter CBA CN301 CN302 CN303 CN53 CN106 CN31B CN311 CN312 LCD Main CBA Unit To Liquid Crystal Panel Unit To Liquid Crystal Panel Unit ...

Page 3: ...SCL 6 SDA 5 7 WP AL 5V AL 5V CN105 IS USED FOR ADJUSTMENT AT FACTORY MPWEL MPCE MPOE MPSEL 0 MPWEH RESET QH HDIN FBIN BUS OPEN 2 DVP RESET PC 8 DVP CLK PC 5 CN301 NO CONNECTION DVP SOUT PC 6 DVP SIN PC 7 DVP CS PC 4 MPSEL 0 3 Q156 3 3V 5V CONVERTER Q155 3 3V 5V CONVERTER Q152 3 3V 5V CONVERTER Q154 3 3V 5V CONVERTER Q153 3 3V 5V CONVERTER AL 3 3V 2 5 25 2DVP SOUT 2DVP CS 2DVP CLK 4 2DVP SIN 3 79 H...

Page 4: ...L BLOCK DIAGRAM C Y TO LCD BLOCK DIAGRAM CN103B IC781 INPUT SELECT SW CONTROL 10 9 11 INPUT 0 INPUT 1 TO SYSTEM CONTROL BLOCK DIAGRAM Q872 Q871 TUNER UNIT BUFFER WF7 WF2 WF3 WF6 WF5 WF4 3 5 4 12 13 14 2 1 15 CVBS1 8 S VIDEO C 5 S VIDEO Y 6 VIDEO R 1 VIDEO G 2 VIDEO B 3 CVBS2 9 8 19 20 VIDEO IN VIDEO OUT SLOW SW 17 16 16 RAPID SW AFT VIDEO Q781 BUFFER WF8 SDA SCL S SW 6 AUDIO AUDIO AFT IN S C JACK ...

Page 5: ...L IN JK723 SIF JK724 AUDIO1 R IN 14 IC801 AUDIO AMP 7 VOLUME 11 AMP AMP MUTE STANDBY CONTROL 6 1 R CH L CH 2 JK801 HEADPHONE JACK CN801 SP R 1 GND 2 TO IF VIDEO BLOCK DIAGRAM 3 15 WF1 CLN801 SP801 SPEAKER R CH TO SYSTEM CONTROL BLOCK DIAGRAM NICAM RESET 43 22 AUDIO RESET 6 INH JK751 1 3 AUDIO2 L OUT AUDIO2 R OUT 6 AUDIO2 L IN 2 AUDIO2 R IN Q732 Q733 Q741 Q742 INSEL MUTE S C JACK MUTE SP MUTE DEEMP...

Page 6: ...12 OR 3 31 OR 4 30 OR 5 29 OR 0 34 OR 1 33 OR 2 32 OG 3 24 OG 4 23 OG 5 22 OG 0 27 OG 1 26 OG 2 25 OB 3 17 OB 4 16 OB 5 15 OB 0 20 OB 1 19 OB 2 18 ER 3 3 ER 4 2 ER 5 1 ER 0 6 ER 1 5 ER 2 4 EG 3 47 EG 4 46 EG 5 45 EG 0 50 EG 1 49 EG 2 48 EB 3 40 EB 4 39 EB 5 38 EB 0 43 EB 1 42 EB 2 41 CVBS1 8 CVBS2 9 S VIDEO C 5 S VIDEO Y 6 VIDEO B 3 VIDEO R 1 VIDEO G 2 VCOM 3 VCOM 4 CN312 84 85 X301 54MHz XIN XOUT...

Page 7: ... AL 40V TO SYSTEM CONTROL BLOCK DIAGRAM TO INVERTER BLOCK DIAGRAM F601 T4A L 250V Q608 Q603 Q504 Q633 Q502 Q632 Q507 Q506 6V REG 5V REG IC602 3 3V REG IC605 5V REG 5V REG Q501 25V REG Q503 10 8V REG Q505 PROTECT 2 AL 5V 11 11 AL 5V CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F601 is blown check to see that all components in the power supp...

Page 8: ... 9 7 3 5 2 6 1 4 10 8 TO POWER SUPPLY BLOCK DIAGRAM TO SYSTEM CONTROL BLOCK DIAGRAM MAIN CBA 22V 7 7 CN404 CN304 22V 6 6 22V 5 5 22V 4 4 22V 8 8 22V 9 9 CURRENT CONTROL SWITCH Q341 Q344 T302 OVER VOLTAGE PROTECTOR Q342 343 9 7 3 5 2 6 1 4 10 8 CURRENT CONTROL SWITCH Q361 Q364 T303 OVER VOLTAGE PROTECTOR Q362 363 9 7 3 5 2 6 1 4 10 8 OVER VOLTAGE PROTECTOR Q304 Q306 10V REG OVER CURERENT PROTECTOR ...

Page 9: ...8 3 L4620SCM1 Main 1 4 Schematic Diagram ...

Page 10: ...620SCM2 Main 2 4 Schematic Diagram CN103A 1 0 1 2 0 4 3 0 2 4 0 5 2 6 6 2 6 7 0 8 1 7 9 0 2 10 0 11 3 5 12 5 2 13 6 9 14 3 1 15 0 16 4 8 17 0 18 5 2 19 0 20 5 2 21 3 3 22 3 1 23 0 VOLTAGE CHART Pin No Voltage ...

Page 11: ... If Main Fuse F601 is blown check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail CAUTION For continued protection against fire hazard replace only with the same type fuse NOTE The voltage for parts in hot circuit is measured using hot GND as a c...

Page 12: ...SCM4 Main 4 4 IR Sensor Schematic Diagram CN102A 1 3 8 2 0 3 0 1 4 5 2 5 5 2 6 3 3 7 0 2 8 0 9 2 0 10 0 11 4 4 12 0 4 13 3 8 14 1 5 15 3 4 16 0 17 0 18 5 2 19 5 2 20 0 21 0 22 0 23 0 VOLTAGE CHART Pin No Voltage ...

Page 13: ...8 7 Function Schematic Diagram L4620SCF ...

Page 14: ...8 8 L4620SCINV Inverter Schematic Diagram ...

Page 15: ...8 9 L4620SCL1 LCD Main 1 2 Schematic Diagram ...

Page 16: ...8 10 L4620SCL2 LCD Main 2 2 Schematic Diagram ...

Page 17: ...unit If Main Fuse F601 is blown check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail Because a hot chassis ground is present in the power supply circut an isolation transformer must be used Also in order to have the ability to increase the input...

Page 18: ...se a hot chassis ground is present in the power supply circut an isolation transformer must be used Also in order to have the ability to increase the input slowly when troubleshooting this type power supply circuit a variable isolation transformer is required CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F601 is blown check to see that all ...

Page 19: ...8 13 IR Sensor CBA Top Bottom View Function CBA Top View Function CBA Bottom View BL4520F01011 2 BL4520F01011 3 ...

Page 20: ...8 14 Inverter CBA Top View Inverter CBA Bottom View BL2500F01021 ...

Page 21: ...15 20 18 16 14 12 6 8 11 10 9 7 5 1 3 4 2 AC601 AC CORD CN312 1 GND 2 NU 3 VCOM 4 VCOM 5 TEST 6 PANEL 25V 7 TEST 8 PANEL 3 3V 9 NU 10 PANEL 6V 11 NU 12 OFFEV 13 STV1 14 CLKV 15 NU 16 GND 17 NU 18 NU 19 NU 20 NU 21 GND 22 VREF 9 23 VREF 8 24 VREF 7 25 VREF 6 26 VREF 5 27 GND 28 VREF 4 29 VREF 3 30 VREF 2 31 VREF 1 32 VREF 0 PANEL 3 3V 33 34 35 36 VCOM 37 GND 38 EB 5 39 EB 4 40 EB 3 1 2 3 4 5 6 7 8 ...