Sharp LC-20A2E Service Manual Download | Manualshive

Page: 19 / 26

background image

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

A

B

C

D

E

F

G

H

I

J

LC-20A2E

LC-20A2E

å

AND SHADED COMPONENTS=SAFETY RELATED PARTS

Ë

TUNER Unit

40~41

«
...
17
18
19
20
21
...
»

Summary of Contents for LC-20A2E

Page 1: ...L 4 OUTLINE DIMENSION FIGURE 5 REMOVING OF MAJOR PARTS 6 ADJUSTING PROCEDURE OF EACH SECTION 9 TROUBLE SHOOTING TABLE 11 CHASSIS LAYOUT 17 BLOCK DIAGRAMS 20 DESCRIPTION OF SCHEMATIC DIAGRAM 24 SCHEMATIC DIAGRAMS 25 PRINTED WIRING BOARD ASSEMBLIES 42 PARTS LIST Ë ELECTRICAL PARTS 47 MAIN UNIT 47 SUB UNIT 50 INVERTER UNIT 52 SWITCH UNIT 52 Ë SUPPLIED ACCESSORIES PARTS 53 Ë PACKING PARTS 53 Ë CABINET...

Page 2: ...s mode 4 Entering the TUNER side adjustment process MENU key on the main body Tuning UP key remote control Select the position shown in the figure below and press the M key remote control within 1 second Enters the adjustment process 3 Adjustment MAIN side adjustment Press the M key to move the cursor and press the volume UP DOWN key to make an adjustment Power supply voltage adjustment B 5V Model...

Page 3: ...ss B ADJ Adjust the voltage of the pin 12 of SC901 the SUB PWB to 5 0V 0 05V 3 2 Model setting Page 9 of MAIN side adjustment process MODEL Set to A2E 3 3 Inch size setting Page 9 of MAIN side adjustment process INCH SIZE Set to 20 3 4 COMMON BIAS adjustment of LCD module Page 9 of MAIN side adjustment process COM BIAS Input the picture of gray scale and adjust it so as to obtain the best contrast...

Page 4: ...and F4 Check S4701 and connection cable Is T701 s primary oscillator waveform normal Check T701 s secondary load Yes Yes No No No No Yes Fluorecent lamp failure to light up Does F1 function Is the pin 34 of IC1201 in the H state Is the Q3603 short circuiting Is there short circuiting of T7751 7756 primary side periphery Q7751 Q7755 Yes Yes No No No Yes Replace the fluorecent lamp with new one and ...

Page 5: ... Yes No No No TV and VIDEO 1 output Is voltages at pin 3 of W7 and pins 3 4 5 of W14 tuner normal Is output at pin 2 of W7 tuner normal Check the power line Check tuner and its peripheral parts Is input at pin 3 of IC402 normal Is the pins 2 and 4 of IC402 at H and L state Yes Yes No No No No No Yes No TV output Is the pins 65 and 66 of IC2001 at H and L state Yes Check the its line Check the its ...

Page 6: ... of IC801 normal No No S VIDEO output Is input at pin 70 of IC801 normal Check the V2VO line and their peripheral parts No No line output Is input at pins 1 2 3 56 57 and 79 of IC801 normal Is output at pins 11 13 and 16 of I4 normal Check IC801 and their peripheral parts Check I13 and their peripheral parts Check I9 and their peripheral parts Check I4 and their peripheral parts Is output at pins ...

Page 7: ...HS being outputted Is source clock CK normal Check 3 3V outputs line of IC752 Check R1210 R1211 and their peripheral parts Check FB1203 and gate aray peripheral parts Is output of LBR and HG normal Yes Yes No No No Vertical line output No picture Check all the settings microprocessor s adjust process menu Is output of R0 R5 normal Is output of G0 G5 normal Is output of B0 B5 normal Check R1202 R12...

Page 8: ... 42 and 43 of SC402 normal Yes Is output at pins 6 and 7 of P4004 normal Yes Muting effect is on Check the FSMUTE line Check IC901 and their peripheral parts Check IC304 and their peripheral parts Check SC402 SC901 and their peripheral parts and connection Check P4004 and their peripheral parts and connection cable Yes Check the J4001 line No sound from headphone Is output at pins 36 and 37 of IC9...

Page 9: ...TROL RECEIVER RESET IC2002 CS E 2 PROM IC2004 I 2 C I 2 C I 2 C I 2 C MICON IC2001 MP_CLK MPDA DAC1CS CONTROL SIGNAL LLC1 LLC2 FIELD VSY HSY UV0 UV7 VP_Y0 VP_Y7 DACM_L R DACA_L R MSP IC901 VPC IC801 HSY ANALOG SWITCH IC2007 HSY2 HD CSYNC 5V 31V 14V 8V 38V 16V 9V 5V 8V 3 3V 3 3V REG IC752 IC201 Q204 Q202 Q203 5V REG IC751 DC DC T701 PWM IC702 INV DC 13V PA DC 13V PA VCC INV VCC SIG VCC DC 13V OSD I...

Page 10: ... OUT V IN2 VPC DY SC1 IN L R MSP V OUT VPC SC1 OUT L R MSP V IN3 VPC SC2 IN L R MSP V IN2 VPC AN IN1 MSP SC2 OUT L R MSP DACA_L R W9 I 2 C I 2 C I 2 C OSD W1 DC 13V W13 ANALOG SWITCH I4 MICON I9 ANALOG SWITCH I13 R_OSD G_OSD B_OSD H V HEAD PHONE AMP Q18 Q23 TUNER W7 W14 HEAD PHONE SOUND L R SOUND L R RF AV1 SOUND L R AV1 PICTURE R_SCART G_SCART B_SCART AV1 SOUND OUTPUT L R AV1 PICTURE OUTPUT SCL S...

Page 11: ...25 LC 20A2E Ë INVERTER Unit A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 SCHEMATIC DIAGRAMS å AND SHADED COMPONENTS SAFETY RELATED PARTS ...

Page 12: ...1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J LC 20A2E LC 20A2E Ë MAIN Unit 1 4 26 27 ...

Page 13: ...1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J LC 20A2E LC 20A2E Ë MAIN Unit 2 4 28 29 ...

Page 14: ...1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J LC 20A2E LC 20A2E Ë MAIN Unit 3 4 30 31 ...

Page 15: ...1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J LC 20A2E LC 20A2E Ë MAIN Unit 4 4 32 33 ...

Page 16: ...1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J LC 20A2E LC 20A2E Ë SUB Unit 1 2 34 35 ...

Page 17: ...1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J LC 20A2E LC 20A2E å AND SHADED COMPONENTS SAFETY RELATED PARTS Ë SUB Unit 2 2 36 37 ...

Page 18: ...1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J LC 20A2E LC 20A2E Ë SWITCH Unit 38 39 ...

Page 19: ...1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J LC 20A2E LC 20A2E å AND SHADED COMPONENTS SAFETY RELATED PARTS Ë TUNER Unit 40 41 ...

Page 20: ... IC1109 VHiNJM353M 1 J NJM353M AG IC1110 VHiBU4053V 1 J BU4053V AE IC1201 RH iX3378CEZZ J IX3378CE AY IC1202 VHiPD485505 2 J PD485505 AY IC1203 VHiTC4W53U 1 J TC4W53U AF IC1204 VHiTC4024BF 1 J TC4024BF AG IC1205 VHiTC4052BF 1 J TC4052BF AE IC2001 RH iX3483CEZZ J IX3483CE BA IC2002 VHiPST529DM 1 J PST529DM AE IC2006 VHiTC7W04U 1 J TC7W04U AD IC2007 VHiTC4W53U 1 J TC4W53U AF TRANSISTORS Q401 VS2SC27...

Page 21: ... AA R775 VRS CY1JF000J J 0 1 16W Metal Oxide AA R776 VRS CY1JF1R0J J 1 1 16W Metal Oxide AA R777 VRS CY1JF102J J 1k 1 16W Metal Oxide AA R787 VRS CY1JF472J J 4 7k 1 16W Metal Oxide AA R788 VRS TW2ED102J J 1k 1 4W Metal Oxide AA R789 VRS CY1JF102J J 1k 1 16W Metal Oxide AA DUNTKA431DE01 MAIN PWB UNIT Continued L1204 VP 1M220J2R9N J Peaking 22µH AC L1205 VP 1M220J2R9N J Peaking 22µH AC CAPACITORS C4...

Page 22: ...LN 0090CE AD FB1201 RBLN 0090CEZZ J Balun BLN 0090CE AD FB1203 RBLN 0076TAZZ J Balun BLN 0076TA AC DUNTKA431DE01 MAIN PWB UNIT Continued R790 VRS CY1JF102J J 1k 1 16W Metal Oxide AA R791 VRS CY1JF000J J 0 1 16W Metal Oxide AA R801 VRS CB1JF221J J 220 1 16W Metal Oxide AC R802 VRS CB1JF220J J 22 1 16W Metal Oxide AC R803 VRS CB1JF220J J 22 1 16W Metal Oxide AC R804 VRS CA1JF101J J 100 1 16W Metal O...

Page 23: ... J 470p 50V Ceramic AA C706 VCKYCY1HB562K J 5600p 50V Ceramic AA C710 VCKYTV1CF105Z J 1 16V Ceramic AB C711 VCKYCY1EB103K J 0 01 25V Ceramic AA C712 VCEAPT1CN226M J 22 16V Electrolytic AC C713 RC EZ1176CEZZ J 100 16V Electrolytic AK C716 VCKYTV1CF105Z J 1 16V Ceramic AB C719 RC EZ0420CEZZ J 100 25V Electrolytic AE C721 VCEASD1HN336M J 33 50V Electrolytic AD C722 VCKYTV1HF104Z J 0 1 50V Ceramic AA ...

Page 24: ... CY1JF682J J 6 8k 1 16W Metal Oxide AA R724 VRS TQ2BD000J J 0 1 8W Metal Oxide AA R729 VRS TQ2BD000J J 0 1 8W Metal Oxide AA R731 VRS TQ2BD000J J 0 1 8W Metal Oxide AA R732 VRS TW2ED222J J 2 2k 1 4W Metal Oxide AA R733 VRS TQ2BD683J J 68k 1 8W Metal Oxide AA R734 VRS CY1JF393J J 39k 1 16W Metal Oxide AA R735 VRS CY1JF223J J 22k 1 16W Metal Oxide AA R736 VRS CY1JF1R0J J 1 1 16W Metal Oxide AA R741 ...

Page 25: ...Q4006 VS2SC2712Y 1 J 2SC2712Y AB Q4007 VS2SC2712Y 1 J 2SC2712Y AB Q4008 VSUPA606T 1 J UPA606T AD DIODES AND LED S D4005 VHDMA3120WA 1 J MA3120WA AK D4006 VHDMA3120WA 1 J MA3120WA AK D4008 RH EX0891CEZZ J Zener Diode AC D4009 RH EX0879CEZZ J Zener Diode AD D4010 RH EX0879CEZZ J Zener Diode AD D4012 RH EX0879CEZZ J Zener Diode AD D4013 RH PX0421CEZZ J PhotoDiode AD D4014 RH PX0421CEZZ J PhotoDiode A...

Page 26: ...Model Label AF 2 16 TLABN0304CEZZ J No Label AF 3 CCOVA1800CE02 J Terminal Cover Ass y AT 4 CCOVA1811CE01 J Stand Ass y BR å 5 KLMP 0112CEZZ J Lamp Upper BB CABINET PARTS LIST å 6 KLMP 0113CEZZ J Lamp Lower BB 7 LANGQ9206CEFW J Fixing Angle x4 AF 8 PGiDM0058CEZZ J Lamp Guide Plate BK 9 PSHEP0179CEZZ J Diffusion Sheet x2 AS 10 PSHEP0180CEZZ J Reflection Polarizing Sheet BR 11 PSHEP0186CEZZ J Reflec...

Reviews:

No comments

Related manuals for LC-20A2E

Brand: HANNspree Pages: 2

Brand: Hisense Pages: 50

Brand: Bush Pages: 44

Brand: Finlux Pages: 30

Brand: Salora Pages: 18

Brand: aiko Pages: 94

Brand: TCL Pages: 21

Brand: TCL Pages: 26

Sentry 2 Z25X22

Brand: Zenith Pages: 36

Brand: HANNspree Pages: 89

Brand: Kogan Pages: 45

Series 8 JU8200

Brand: Kogan Pages: 17

Brand: ProScan Pages: 26

Brand: Dynex Pages: 2

Brand: Cello Pages: 40

Brand: Samsung Pages: 102

Viera TX-L32G20BA

Brand: Panasonic Pages: 108

Brand: Samsung Pages: 289

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands