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TCL L28E3500, Service Manual

The TCL L28E3500 service manual is available for free download on our website. This detailed manual provides users with in-depth information on troubleshooting, maintenance, and repairs for this high-quality product. Get your copy today and ensure your TCL L28E3500 continues to perform at its best.

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GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

T

T

T

T

DD-MM

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4-14-2009_15:30

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DD-MM

DD-MM

DD-MM

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DD-MM-YY

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TELEPHONE

ADDRESS2

ADDRESS3

ADDRESS1

ON:
BY:

CHECKED

DRAWN

DESIGNATION

DATE

DESCRIPTION

Last modif

NAME

Index-Lab

SBU :

ON:

BY:

OF  :

PAGE:

A

1

2

3

THIS DRAWING CANNOT BE COMMUNICATED TO UNAUTHORIZED PERSONS COPIED UNLES S PERMITTED IN WRITING

4

5

6

7

8

F

E

D

C

B

A

8

7

6

5

4

3

2

1

F

E

D

C

B

FORMAT DIN A3

Last saved :

TCLNO:

TCL

10

M/SS

VP

11

12

13

14

15

16

17

18

-INV1

SGND

SVRR

OUT1

PGND

OUT2

-INV2

GND

GND

GND

(5)

(5)

(5)

C615

22U

R610
10K

12V

R609

220K

R613

10K

R611

22K

B

E

C

Q602

BT3906

R612
3K9

3V3_STB

C614

1U

C613

1U

NC/

4K7

R607

100R

R605

B

C

E

Q601

BT3904

C603
100U 16V

D601

LL4148

1

2

P601

10

8

7

11

12

13

14

15

16

17

18

1

2

3

4

5

6

9

U601

TDA1517P

R606

1K

C608

470U

16V

C605
220U

16V

C604

220U

16V

OUTRP

OUTRP

OUTLP

OUTLP

R602

3K3

NC/

AMP_R_OUT

C610

0.1U

0.1U

C609

C607

0.1U

SPK_R+

R_GND

L_GND

SPK_L+

R604

3K3

NC/

12V

1000P

C606

C612

1U

C602

1U

C611

1000P

R603
100R

1

2

P602

AMP_RESET

C601

1000P

R601
100R

AMP_L_OUT

SP_MUTE

Summary of Contents for L28E3500

Page 1: ...rocedure 7 4 Block Diagram 2 5 Scheme Diagram 2 6 PCB Layout 27 7 Trouble Shooting 8 Explode Diagram 35 9 BOM List 36 This manual is the latest at the time of printing and does not include the modific...

Page 2: ...lectric shock to the person The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the lite...

Page 3: ...impact of any kind Be particularly careful not to damage the picture tube surface 9 Unplug this television set from the wall outlet before cleaning Do not use liquid cleaners or aerosol cleaners Use...

Page 4: ...ng conductors location of antenna discharge unit connection to grounding electrode and requirements for the grounding electrode 15 2 Note to CATV system installer Only for the television set with CATV...

Page 5: ...durein youroperatinginstructions do not attempt any further adjustment Unplug the set and call your dealer or service technician 22 Whenever the television set is damaged or fails or a distinct change...

Page 6: ...ssis MS82MT LA Viewing Angle H V 178 178 Certification CB Life Time 30 000hrs Power Supply AC 100V 240V 50 60Hz Color 16 7M Power Consumption TV on 35W SOUND Power Consumption Standby 1W Speakers Inte...

Page 7: ...TCL Multimedia Technology Holdings Ltd R D Center Alignment Procedure MS82MT AP LA Chassis Version 1 0 Release Date 2013 03 26 PREPARED BY Kangwei DATE 2013 03 26 APPROVED BY DATE...

Page 8: ...Service Menu 10 3 5 PARAM SETTING MENU 11 3 6 Hotel Menu 12 4 Steps of debugging 13 4 1 Device 13 4 2 steps of debugging 13 4 3 ADC calibration 13 4 4 White Balance adjustment 14 4 5 White Balance ad...

Page 9: ...esign Menu Service Menu and Hotel Menu Factory Menu covers all indispensable functions during manufacture such as White Balance Adjustment ADC Calibration USB Upgrading e g while the items under Desig...

Page 10: ...nsure user cannot access to Factory Menu after executing the item OK NVM RESET DO Restore default value except WB and ADC data OK SET FAC CH DO Preset the channel table of factory Option HZ WX EGYPT E...

Page 11: ...4096 Gain of G channel cannot be changed after auto calibration OK B GAIN 4096 Gain of B channel cannot be changed after auto calibration OK R OFFSET 0 Offset of R channel cannot be changed after auto...

Page 12: ...ature you intend to adjust Three groups of color temperature Normal Warm Cool are available for each source OK R GAIN 2 Gain of R channel cannot be changed after auto calibration OK G GAIN 0 Gain of G...

Page 13: ...D OK SERVICE MENU Provide many useful information for aftersale service Please reference to SERVICE MENU submenu OK PARAM SETTING Include volume brightness contrast saturation hue sharpness backlight...

Page 14: ...OP MENU Name Default Description Status VOLUME 30 Volume setting 0 100 adjustable OK PIC MODE STANDARD Picture mode Options BRIGHT SOFT PERSONAL STANDARD OK SOUND MODE STEREO Sound effects Options STA...

Page 15: ...Control Exclusively used by R D OK DBC ENABLE Dynamic Backlight Enable Exclusively used by R D OK BP Parameter of DBC Exclusively used by R D OK CP Parameter of DBC Exclusively used by R D OK DBC MOD...

Page 16: ...the available options SERVICE MENU Product Info Name Default Description Status SW NO Software virtual code of Main Software OK DATE Release date time OK Project Name Model of product OK SIACP Version...

Page 17: ...item and to enter menu PARAM SETTING MENU Setting menu Name Default Description Status Brightness Curve Brightness curve Exclusively used by R D OK Contrast Curve Contrast curve Exclusively used by R...

Page 18: ...K MAX VOL 100 Max volume OK AUTO SET OFF The switch of PIC SOUND etc When it is ON these items are selectable OK PIC MODE Standard Picture mode OK SOUND MODE STEREO Sound mode OK POWER VOL 50 Default...

Page 19: ...BOM about Project ID number D return to Factory Menu check the Product model E choose Factory Menu NVM RESET and press and wait until prompt OK appears F restart the set G according to the requiremen...

Page 20: ...eed to be adjusted It is necessary to adjustment HDMI 1 firstly a signal and generator The pattern of the signal should be used are White Chroma2329 pattern113 and Grey pattern 114 The format of signa...

Page 21: ...and grey equal to x y In addition to select COLORTEMP COOL WARM the adjustment method of COOL and WARM color temperature is same with that of NORMAL The color coordination we recommend is as follows D...

Page 22: ...rogrammed before SMT by ALL 11 or other tools Note 1 The software for U502 and U702 can be program using ISP tool 2 Every set has its unique HDCP key which is purchased from suppliers or HDCP certific...

Page 23: ...enu you can choose either a or b way below a In the first place press Menu button of remote control then select Contrast item of Picture submenu Finally press 9 7 3 5 consecutively b When the Factory...

Page 24: ...can choose either a or b way below a In the first place press Menu button of remote control then select Contrast item of Picture submenu Finally press 1 9 5 0 consecutively b When the DESIGN HOTKEY it...

Page 25: ...2MT AP LA Chassis Aliment procedure PRELIMINARY INFORMATION SUBJECT TO CHANGE 19 Check product information Product Information Remote Control name Power Supply name Audio Channel number Change project...

Page 26: ...fix the problem a If the resolution of the panel of your set is 1366 768 HD panel you can press Menu and 4976 of remote control in series after turning on b If the resolution of the panel of your set...

Page 27: ...U D104 MBRX14 R124 220R 12V_A 5 4 3 2 1 U106 RT9711 NC 5V D101 5V6 NC C110 10U NC C105 1U NC R102 4K7 NC C122 0 022U NC R118 2K2 R117 51K R116 30K R115 82K 1 2 3 6 5 8 4 7 U105 MP1494 C132 1000P VDDC...

Page 28: ...VIN 4 300mA Caution TU_3V3 must be from LDO TDA18273 CAN_TUNER_ONBOARD_COMP SCH VER1 0 2012 7 25 1 2 3 4 U201 AS1117 3 3 7 3 4 5 1 2 6 TUN1 LT6 100NH 8 2NH LT5 0 047U CT22 100P CT23 IF_AGC 6800P CT32...

Page 29: ..._R SPDIF C313 33P R323 220R SPDIF_OUT C312 0 1U R316 100R C316 2U2 C317 2U2 0 047U C318 AV1_R_IN AV1_L_IN AV1_V_IN HD_L HD_R R310 47R R309 47R R305 47R 0 047U C309 R311 10R C304 1000P 0 047U C305 0 04...

Page 30: ...406 0 047U VGA_VS VGA_RXD R407 10K NC H1_HPD_OUT 4K7 R408 10K R413 H1_DET C404 1U R421 0R VGA_HS R402 75R 2K2 R403 R404 2K2 R422 100R R423 100R H1_SCL F29 F30 R420 100R R419 100R 100R R416 R415 100R R...

Page 31: ...CS 200MA CLOSE TO IC 100mA total 200mA 600mA CONFIG GPIO SPI_SDI SPI_SCK SPI_CZ SPI_SDO F_WP 5 6 7 8 4 3 2 1 U502 CPP EN25Q32B 5V 0 1U C509 R511 100R L8 M11 K4 J9 H10 H9 R7 P7 P6 R5 R4 P4 G3 G2 K13 N...

Page 32: ...TCLNO TCL 10 M SS VP 11 12 13 14 15 16 17 18 INV1 SGND SVRR OUT1 PGND OUT2 INV2 GND GND GND 5 5 5 C615 22U R610 10K 12V R609 220K R613 10K R611 22K B E C Q602 BT3906 R612 3K9 3V3_STB C614 1U C613 1U N...

Page 33: ...6 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 U701 MST6M30QST TCON_SCL 5 6 7 8 4 3 2 1 U702 CPP M24C...

Page 34: ...no picture Check the voltage of pin s of q208 2 1 Replace R270 and R271 Check the output of Q208 2 1 Check the voltage of g of Q208 OR replace Q208 Measure the wave of LVDS signal 1 2 Replace panel Ch...

Page 35: ...e wave of pin 8 9 of U1 1 Check the voltage of pin 6 7 of u1 OK Replace u1 Check the circuit between U1 and U201 Check the U201 measure the wave of SDA and SCL 1 repair the circuit of U101 and Q102 OK...

Page 36: ...Check the components between VGA YPbPr port and U201 1 Replace the bad VGA YPbPr no picture OK Check the components between VGA YPbPr port and U201 1 Replace the bad Software of U202 ok 1 Check U201 o...

Page 37: ...in 3 13 of U602 2 1 Repair the 12v supply Check the pin 6 of u602 2 1 Check q607 q608 q609 1 2 Replace U602 or replace the wire of speaker check u601 and volume control Check the wave of PIN 4 12 of U...

Page 38: ...ndby 5 0VSB OK 5 0V NG Check the voltage of pin s of q305 2 1 Check before Q305 Check the output of Q305 2 1 Check the voltage of g of Q305 OR replace Q305 Check U303 U304 short to Gnd 1 Replace the b...

Page 39: ...The picture bad Replace the wire from P202A to t com Replace panel Replace the chassis NG Check the circuit between p202a and U201 Upgrade the software NG OK OK...

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