FUNAI LCD-A1506 Service Manual Download Page 24 | Manualshive

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background image

7-6

L4520BLLB

LCD Backlight Block Diagram

CURRENT

CONTR

OL

SWITCH

Q421

Q424

T401

CN401

LCD MODULE

BA

CK

LIGHT

BA

CK

LIGHT

O

VER V

OL

TA

GE

PR

O

TECT

OR

Q422,432

1

2

CN403

1

2

INV+22V

9

7

3

5

2

6

1

4

10

8

TO

PO

WER

SUPPL

Y

BLOCK

DIA

GRAM

MAIN CB

A

CURRENT

CONTR

OL

SWITCH

Q461

Q464

T402

O

VER V

OL

TA

GE

PR

O

TECT

OR

Q462,463

9

7

3

5

2

6

1

4

10

8

O

VER V

OL

TA

GE

PR

O

TECT

OR

Q404

Q406

SWITCHING

O

VER CURERENT

PR

O

TECT

OR

Q425

Q405

PR

O

TECT

-1

Q401

SWITCHING

BA

CKLIGHT

-ON

Q402

Q403

PWM CONTR

OL

BA

CKLIGHT

-ADJ

AL+40V

TO

SYSTEM

CONTR

OL

BLOCK

DIA

GRAM

Van Woerkom electra

www.freeservicemanuals.info

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Summary of Contents for LCD-A1506

Page 1: ...SERVICE MANUAL 15 COLOR LCD TELEVISION LCD A1506 LCD B1506 LCD C1506 LCD D1506 Van Woerkom electra www freeservicemanuals info...

Page 2: ...trical Adjustment Instructions 6 1 Block Diagrams 7 1 Schematic Diagrams CBA s and Test Points 8 1 Waveforms 9 1 Wiring Diagram 10 1 Exploded View 11 1 Mechanical Parts List 12 1 Electrical Parts List...

Page 3: ...K SECAM L SECAM L MHz MHz MHz MHz MHz MHz 38 9 33 9 33 4 32 9 32 4 40 4 2 Video S N White 50 CH 3 dB 45 40 3 Audio S N Output Level 500mV dB 53 47 Description Condition Unit Nominal Limit 1 Number of...

Page 4: ...pplicable to the coaxial connector If the measured resistance is less than 1 0 megohm or greater than 5 2 megohm an abnormality exists that must be corrected before the instrument is returned to the c...

Page 5: ...be sure that leads and components do not touch thermally hot parts c the AC supply d high voltage and e antenna wiring Always inspect in all areas for pinched out of place or frayed wiring Check AC p...

Page 6: ...s been replaced check that 5 6 kg of force in any direction will not loosen it I Also check areas surrounding repaired locations J Use care that foreign objects screws solder droplets etc do not remai...

Page 7: ...xposed accessible parts RF terminals an tenna terminals video and audio input and output ter minals microphone jacks earphone jacks etc Measuring Method Power ON Insert load Z between B earth ground p...

Page 8: ...ed with glue to the CBA when removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted Fig S 1 6 4 Release the flat pack IC from...

Page 9: ...you can remove it easily Fig S 1 3 2 Affix the wire to a workbench or solid mounting point as shown in Fig S 1 5 3 While heating the pins using a fine tip soldering iron or hot air blower pull up the...

Page 10: ...fference caused by electrostatic charge during unpacking or repair work 1 Ground for Human Body Be sure to wear a grounding band 1 M that is properly grounded to remove any static electricity that may...

Page 11: ...se Unplug or Desolder e g 2 S 2 two Screws S 2 2 L 2 two Locking Tabs L 2 5 Refer to the following Reference Notes in the Table Step Loc No Part Removal Fig No Remove Unhook Unlock Release Unplug Uncl...

Page 12: ...4 2 L4531DC 1 Rear Cabinet 2 Stand A S 1 S 1 S 1 S 2 Shaft S 1 S 2 5 Stand B 3 Bracket 4 Holder S 1 S 3 S 4 S 5 Fig D1 Van Woerkom electra www freeservicemanuals info...

Page 13: ...CBA 6 Jack Holder 9 Function CBA 10 Speaker 12 Front Cabinet Speaker Holders S 8 7 Main CBA 10 Speaker S 10 S 7 S 6 S 9 S 9 S 9 S 9 S 10 S 10 8 LCD Main CBA Unit Liquid Crystal Panel Unit S 6 S 8 S 8...

Page 14: ...To Speaker Function CBA CN801 To Speaker CLN53 CN101A CN102A CN103A CN101B CN102B CN103B Main CBA CN401 CN403 CN53 CN106 CN31B CN311 CN312 LCD Main CBA Unit To Liquid Crystal Panel Unit To Liquid Crys...

Page 15: ...Use main power on the TV unit 2 To enter the service mode press STANDBY 2 7 1 and MUTE buttons on the remote control unit in that order within 5 seconds To cancel the service mode press STANDBY button...

Page 16: ...remote control 1 Initial Setting General Enter the Service mode Set the each initial data as shown on table 1 below Table 1 Initial Data ITEM BUTTON on the remote control DATA VALUE BRT PAL MENU 1 13...

Page 17: ...SC 131 C SHR NTSC 143 BRIGHT 0 0 NORMAL 0 40 DARK 0 95 COR C D S 1 VOL p 1 128 COG C D S 1 VOL p 2 128 COB C D S 1 VOL p 3 128 DR C D S 1 VOL p 4 180 DG C D S 1 VOL p 5 180 DB C D S 1 VOL p 6 180 SBR...

Page 18: ...t DB C D S 1 or DR C D S 1 Refer to 1 Initial Setting RF AV2 CVBS APL 40 Press 3 button to select COB C D S 1 for Blue adjustment Press 1 button to select COR C D S 1 for Red adjustment When x value a...

Page 19: ...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...

Page 20: ...D 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...

Page 21: ...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...

Page 22: ...9 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...

Page 23: ...OCK DIAGRAM TO LCD BACKLIGHT 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...

Page 24: ...2 6 1 4 10 8 TO POWER SUPPLY BLOCK DIAGRAM MAIN CBA CURRENT CONTROL SWITCH Q461 Q464 T402 OVER VOLTAGE PROTECTOR Q462 463 9 7 3 5 2 6 1 4 10 8 OVER VOLTAGE PROTECTOR Q404 Q406 SWITCHING OVER CURERENT...

Page 25: ...rrect part number is shown in the parts list and may be slightly different or amended since these drawings were prepared 2 All resistance values are indicated in ohms K 103 M 106 3 Resistor wattages a...

Page 26: ...function and reliability of repaired units use only original replacement parts which are listed with their part numbers in the parts list section of the service manual 4 Voltage indications on the sc...

Page 27: ...8 3 L4520SCM1 Main 1 4 Schematic Diagram Van Woerkom electra www freeservicemanuals info...

Page 28: ...c 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 Van Woerkom elec...

Page 29: ...wn 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 circu...

Page 30: ...chematic 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 Van Woerkom e...

Page 31: ...8 7 Function Schematic Diagram L4520SCF Van Woerkom electra www freeservicemanuals info...

Page 32: ...8 8 L4520SCL1 LCD Main 1 2 Schematic Diagram Van Woerkom electra www freeservicemanuals info...

Page 33: ...8 9 L4520SCL2 LCD Main 2 2 Schematic Diagram Van Woerkom electra www freeservicemanuals info...

Page 34: ...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 c...

Page 35: ...s 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...

Page 36: ...8 12 IR Sensor CBA Top Bottom View Function CBA Top View Function CBA Bottom View BL4520F01012 2 BL4520F01012 3 Van Woerkom electra www freeservicemanuals info...

Page 37: ...atic Diagram WF1 Pin 14 of IC801 AUDIO 0 1V 0 5ms WF2 Pin 1 of IC781 S VIDEO Y 0 2V 10 s WF3 Pin 13 of IC781 S VIDEO C 0 2V 20 s WF4 Pin 3 of CN103A B 0 5V 5 s WF7 Pin 9 of CN103A CVBS2 0 2V 20 s WF5...

Page 38: ...9 WF14 Waveforms to be observed at Waveform check points Shown in Schematic Diagram WF9 R997 WF10 R902 WF11 R901 WF12 R904 WF13 R907 WF14 R905 CTKH 1V 20ns STH1 1V 1 s POL 1V 20 s LP 1V 10 s STV1 1V 5...

Page 39: ...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 VRE...

Page 40: ...02 SP802 See Electrical Parts List for parts with this mark Main CBA Function CBA IR Sensor CBA B10 L4 L1 L21 L21 L9 L17 LCD Main CBA Unit Liquid Crystal Panel Unit AC601 L4 L1 B9 L16 A5 L9 B34 L30 B5...

Page 41: ...1 Some Ref Numbers are not in sequence X5 X3 Comparison Chart of Models and Marks Model Mark LCD A1506 LCD B1506 LCD C1506 LCD D1506 A B C D X2 1 X2 2 X2 3 X2 4 X2 5 X2 6 X2 7 X2 12 A X2 1 B C D X2 2...

Page 42: ...GBHP3100 L23 SCREW P TIGHT M3X8 BIND HEAD GBJP3080 L25 ASSEMBLED SCREW M3X10 1EM420633A L30 SCREW P TIGHT M3X8 DISH HEAD GDJP3080 SP801 SPEAKER S0407F10 DSD0807XQ002 SP802 SPEAKER S0407F10 DSD0807XQ0...

Page 43: ...C CAP 10 F 50V M or CE1JMASDL100 ELECTROLYTIC CAP 10 F 50V M or CA1J100SP085 ALUMINUM ELECTROLYTIC CAP 10 F 50V M CE1JMASTM100 C427 CHIP CERAMIC CAP 1608 B K 0 01 F 50V CHD1JK30B103 C428 ELECTROLYTIC...

Page 44: ...LYTIC CAP 470 F 10V M or CA1A471SP085 ELECTROLYTIC CAP 470 F 10V M CE1AMASTM471 C654 CHIP CERAMIC CAP 1608 B K 0 01 F 50V CHD1JK30B103 C655 ELECTROLYTIC CAP 470 F 6 3V M or CE0KMASDL471 ELECTROLYTIC C...

Page 45: ...HD1JK30B103 C847 ELECTROLYTIC CAP 10 F 16V M or CE1CMASDL100 ELECTROLYTIC CAP 10 F 16V M or CA1C100SP085 ELECTROLYTIC CAP 10 F 16V M CE1CMASTM100 Ref No Description Part No C848 CHIP CERAMIC CAP 1608...

Page 46: ...0DZ5R6BS D611 ZENER DIODE MTZJT 7722B or QDTB00MTZJ22 ZENER DIODE DZ 22BSBT265 NDTB00DZ22BS Ref No Description Part No D612 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D613 SWITCHING DIODE 1SS133 T 77 QD...

Page 47: ...OR KTA 1266 GR AT P or NQS4KTA1266P TRANSISTOR 2SA1318 T AANP or 2SA1318TZ TRANSISTOR 2SA1318 U AANP 2SA1318UZ Q406 TRANSISTOR 2SC2120 O TE2 F T or QQS02SC2120F TRANSISTOR 2SC2120 Y TE2 F T QQSY2SC212...

Page 48: ...A103YF002 R437 CHIP RES 1 10W J 10k or RRXAJR5Z0103 Ref No Description Part No RES CHIP 1608 1 10W J 10k RRXA103YF002 R461 CHIP RES 1 10W J 390 or RRXAJR5Z0391 RES CHIP 1608 1 10W J 390 RRXA391YF002 R...

Page 49: ...002 R661 CARBON RES 1 4W J 1 2k RCX4JATZ0122 R663 CARBON RES 1 4W J 2 2 RCX4JATZ02R2 Ref No Description Part No R664 CARBON RES 1 4W J 2 2 RCX4JATZ02R2 R665 PCB JUMPER D0 6 P5 0 JW5 0T R667 CARBON RES...

Page 50: ...METAL OXIDE FILM RES 2W J 2 2 or RN022R2ZU001 Ref No Description Part No METAL OXIDE FILM RES 2W J 2 2 RN022R2DP004 R807 METAL OXIDE FILM RES 2W J 2 2 or RN022R2ZU001 METAL OXIDE FILM RES 2W J 2 2 RN0...

Page 51: ...ER ETJV27ZJ22AC LTZ2PC0MS002 T402 TRANS INVERTER ETJV27ZJ22AC LTZ2PC0MS002 T601 TRANS POWER 6740 LTT3PE0KT012 TM601 EYELET TYPE D 1 0VM406868 TM602 EYELET TYPE D 1 0VM406868 X831 XTAL 18 432MHz FXD186...

Page 52: ...ption Part No MISCELLANEOUS AC601 A C D AC CORD CEE 1800MM BLACK WAE0182LW004 AC601 B AC CORD BS 1800MM BLACK WAB0182LW017 TU1 A B D TUNER UNIT BS TMFE6 301A UTUNPLGAL018 TU1 C TUNER UNIT BS TMFE6 401...

Page 53: ...LCD A1506 LCD B1506 LCD C1506 LCD D1506 L4520EA 21BB 22FC 23RD 2006 08 04 Van Woerkom electra www freeservicemanuals info...

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