Panasonic TH-L32A20X Schematic

ORDER NO. MTV1001917CE

LCD TV

Model No.

TH-L32A20X

Chassis: KM06

Destination: SINGAPORE

TABLE OF CONTENTS

1 Safety Precautions ----------------------------------------------- 3

1.1. General Guidelines---------------------------------------- 3

1.1.1. Leakage Current Cold Check ---------------------- 3

1.1.2. Leakage Current Hot Check (See Figure

1.) --------------------------------------------------------- 3

2 Warning-------------------------------------------------------------- 4

2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices---------- 4

2.2. About lead free solder (PbF)---------------------------- 5

3 Service Navigation ----------------------------------------------- 6

3.1. Service Hint ------------------------------------------------- 6

3.2. Applicable signals ----------------------------------------- 7

4 Specifications ----------------------------------------------------- 8 5 Service Mode -----------------------------------------------------10

5.1. How to enter into Service Mode ----------------------10

5.1.1. Contents of adjustment mode --------------------10

5.1.2. How to exit---------------------------------------------10

5.2. SRV-TOOL -------------------------------------------------11

5.2.1. How to access ---------------------------------------- 11

PAG E PAG E

5.2.2. Display of SOS History ---------------------------- 11

5.2.3. POWER ON TIME/COUNT ----------------------- 11

5.2.4. Exit ------------------------------------------------------ 11

5.3. Service Mode Adjustment------------------------------ 12

5.3.1. Self Check Mode ------------------------------------ 12

5.3.2. Hotel Mode Adjustment ---------------------------- 12

5.3.3. Hotel Mode-------------------------------------------- 12

6 Troubleshooting Guide --------------------------------------- 13

6.1. Check of the IIC bus lines------------------------------ 13

6.1.1. How to access --------------------------------------- 13

6.1.2. Exit ------------------------------------------------------ 13

6.1.3. Screen display --------------------------------------- 13

6.1.4. Check Point ------------------------------------------- 13

6.2. Power LED Blinking timing chart --------------------- 14

6.3. No Power--------------------------------------------------- 14

7 Disassembly and Assembly Instructions--------------- 15

7.1. AC Cord Dressing---------------------------------------- 15

7.2. AC Cord Installation ------------------------------------- 16

7.3. VESA Rail Installation----------------------------------- 17

TH-L32A20X

7.4. VESA Metal Assembly ---------------------------------- 18

7.5. Control Panel Assembly -------------------------------- 19

7.6. Side AV Bracket Assembly ----------------------------20

7.7. SP Installation---------------------------------------------21

7.8. LCD Panel Installation ---------------------------------- 22

7.9. LED Panel Installation & Fitting----------------------- 23

7.10. LCD Mounting Installation 1 --------------------------- 24

7.11. LCD Mounting Installation 2 --------------------------- 25

7.12. LCD Mounting Installation 3 --------------------------- 26

7.13. Metal Bracket Installation ------------------------------ 27

7.14. LVDS Installation ----------------------------------------- 28

7.15. PCB and Clamper Assembly -------------------------- 29

7.16. PB MTG Installation -------------------------------------30

7.17. Pedestal Assembly 1 ------------------------------------ 31

7.18. Pedestal Assembly 2 ------------------------------------ 32

7.19. Pedestal Assembly 3 ------------------------------------ 32

7.20. Stand MTG Assembly-----------------------------------34

8 Measurements and Adjustments -------------------------- 35

8.1. Voltage chart of A-board-------------------------------- 35

8.2. Voltage chart of P-board-------------------------------- 35

8.3. Picture level adjustment (RF) ------------------------- 35

8.4. Picture level adjustment (VIDEO) -------------------- 36

8.5. Picture level adjustment (YUV) ----------------------- 36

9 Block Diagram --------------------------------------------------- 37

9.1. Main Block Diagram ------------------------------------- 37

10 Wiring Connection Diagram --------------------------------- 38 11 Schematic Diagram--------------------------------------------- 40

11.1. Schematic Diagram Notes ----------------------------- 40

11.2. A Board ----------------------------------------------------- 41

11.2.1. A Board - Sheet : 002 (1 / 4)---------------------- 41

11.2.2. A Board - Sheet : 002 (2 / 4)---------------------- 42

11.2.3. A Board - Sheet : 002 (3 / 4)---------------------- 43

11.2.4. A Board - Sheet : 002 (4 / 4)---------------------- 44

11.2.5. A Board - Sheet : 003 (1 / 3)---------------------- 45

11.2.6. A Board - Sheet : 003 (2 / 3)---------------------- 46

11.2.7. A Board - Sheet : 003 (3 / 3)---------------------- 47

11.2.8. A Board - Sheet : 005 (1 / 3)---------------------- 48

11.2.9. A Board - Sheet : 005 (2 / 3)---------------------- 49

11.2.10. A Board - Sheet : 005 (3 / 3)----------------------50

11.2.11. A Board - Sheet : 007 (1 / 4)---------------------- 51

11.2.12. A Board - Sheet : 007 (2 / 4)----------------------52

11.2.13. A Board - Sheet : 007 (3 / 4)----------------------53

11.2.14. A Board - Sheet : 007 (4 / 4)----------------------54

11.2.15. A Board - Sheet : 009 (1 / 4)----------------------55

11.2.16. A Board - Sheet : 009 (2 / 4)----------------------56

11.2.17. A Board - Sheet : 009 (3 / 4)----------------------57

11.2.18. A Board - Sheet : 009 (4 / 4)----------------------58

11.2.19. A Board - Sheet : 010 (1 / 6)----------------------59

11.2.20. A Board - Sheet : 010 (2 / 6)----------------------60

11.2.21. A Board - Sheet : 010 (3 / 6)----------------------61

11.2.22. A Board - Sheet : 010 (4 / 6)----------------------62

11.2.23. A Board - Sheet : 010 (5 / 6)----------------------63

11.2.24. A Board - Sheet : 010 (6 / 6)----------------------64

11.2.25. A Board - Sheet : 012 (1 / 3)----------------------65

11.2.26. A Board - Sheet : 012 (2 / 3)----------------------66

11.2.27. A Board - Sheet : 012 (3 / 3)----------------------67

11.2.28. A Board - Sheet : 015 (1 / 4)----------------------68

11.2.29. A Board - Sheet : 015 (2 / 4)----------------------69

11.2.30. A Board - Sheet : 015 (3 / 4)----------------------70

11.2.31. A Board - Sheet : 015 (4 / 4)----------------------71

11.2.32. A Board - Sheet : 016 (1 / 4)----------------------72

11.2.33. A Board - Sheet : 016 (2 / 4) --------------------- 73

11.2.34. A Board - Sheet : 016 (3 / 4) --------------------- 74

11.2.35. A Board - Sheet : 016 (4 / 4) --------------------- 75

11.2.36. A Board - Sheet : 017 (1 / 4) --------------------- 76

11.2.37. A Board - Sheet : 017 (2 / 4) --------------------- 77

11.2.38. A Board - Sheet : 017 (3 / 4) --------------------- 78

11.2.39. A Board - Sheet : 017 (4 / 4) --------------------- 79

11.2.40. A Board - Sheet : 018 (1 / 1) --------------------- 80

11.3. K Board----------------------------------------------------- 81

11.3.1. K Board (1 / 2) --------------------------------------- 81

11.3.2. K Board (2 / 2) --------------------------------------- 82

11.4. P Board----------------------------------------------------- 83

11.4.1. P Board (1 / 5) --------------------------------------- 83

11.4.2. P Board (2 / 5) --------------------------------------- 84

11.4.3. P Board (3 / 5) --------------------------------------- 85

11.4.4. P Board (4 / 5) --------------------------------------- 86

11.4.5. P Board (5 / 5) --------------------------------------- 87

11.5. V Board----------------------------------------------------- 88

11.5.1. V Board (1 / 3) --------------------------------------- 88

11.5.2. V Board (2 / 3) --------------------------------------- 89

11.5.3. V Board (3 / 3) --------------------------------------- 90

11.6. L Board ----------------------------------------------------- 91

11.6.1. L Board (1 / 2) --------------------------------------- 91

11.6.2. L Board (2 / 2) --------------------------------------- 92

12 Printed Circuit Board------------------------------------------ 93

12.1. A-Board ---------------------------------------------------- 93

12.2. A-Board ---------------------------------------------------- 94

12.3. P-Board ---------------------------------------------------- 95

12.4. P-Board ---------------------------------------------------- 97

12.5. K-Board ---------------------------------------------------- 98

12.6. K-Board ---------------------------------------------------- 98

12.7. V-Board----------------------------------------------------- 98

12.8. V-Board----------------------------------------------------- 98

12.9. L-Board----------------------------------------------------- 99

12.10. L-Board----------------------------------------------------- 99

13 Exploded View and Replacement Parts List---------- 100

13.1. Exploded View and Mechanical Replacement Parts List--------------------------------------------------100

13.2. Electrical Replacement Parts List ------------------ 100

13.2.1. Replacement Parts List Notes ------------------ 100

13.2.2. Electrical Replacement Parts List-------------- 101

TH-L32A20X

1 Safety Precautions

1.1. General Guidelines

1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.

2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.

4. When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials.

5. When wiring units (with cables, flexible cables or lead wires) are supplied as repair parts and only one wire or some of the wires have been broken or disconnected, do not attempt to repair or re-wire the units. Replace the entire wiring unit instead.

6. When conducting repairs and servicing, do not twist the Faston connectors but plug them straight in or unplug them straight out.

1.1.1. Leakage Current Cold Check

1. Unplug the AC cord and connect a jumper between the two prongs on the plug.

2. Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be 100 Mohm and over. When the exposed metal does not have a return path to the chassis, the reading must be .

1.1.2. Leakage Current Hot Check (See Figure 1.)

1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.

2. Connect a 1.5kohm, 10 watts resistor, in parallel with a

0.15μF capacitors, between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1.

3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.

4. Check each exposed metallic part, and measure the voltage at each point.

5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.

6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. In case a measurement is outside of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer.

Figure 1

TH-L32A20X

2Warning

2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor [chip] components. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD).

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as [anti-static (ESD protected)] can generate electrical charge sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.

Caution

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise ham less motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).

TH-L32A20X

2.2. About lead free solder (PbF)

Note: Lead is listed as (Pb) in the periodic table of elements. In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu). That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.

This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work, we’d suggest the use of Pb free solder as well, although Pb solder may be used.

PCBs manufactured using lead free solder will have the PbF within a leaf Symbol PbF stamped on the back of PCB.

Caution

• Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40 °C) higher. Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).

• Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C). If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before applying Pb solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.

• After applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto the opposite side. (see figure below)

Suggested Pb free solder

There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.

TH-L32A20X

3 Service Navigation

3.1. Service Hint

Board Name Function

A Board AVSW, TUN, GENX, PEAKS-AVCEEP, TEMP TUN

V Board REMOTE, LED, LUMINUNCE SENSOR

K Board CONTROL BUTTON, POWER BUTTON

P BOARD POWER AC / DC

TH-L32A20X

3.2. Applicable signals

Input signal that can be displayed

* Mark: Applicable input signal for Component (Y, P

horizontal frequency (kHz) vertical frequency (Hz) COMPONENT HDMI PC

525 (480) / 60i 15.73 59.94 * *

525 (480) /60p 31.47 59.94 * *

750 (720) /60p 45.00 59.94 * *

1,125 (1,080) /60i 33.75 59.94 * *

640 × 400 @70 31.47 70.08 *

640 × 480 @60 31.47 59.94 *

Macintosh13 inch (640 × 480) 35.00 66.67 *

640 × 480 @75 37.50 75.00 *

852 × 480 @60 31.47 59.94 *

800 × 600 @60 37.88 60.32 *

800 × 600 @75 46.88 75.00 *

800 × 600 @85 53.67 85.08 *

Macintosh16 inch (832 × 624) 49.73 74.55 *

1,024 × 768 @60 48.36 60.00 *

1,024 × 768 @70 56.48 70.07 *

1,024 × 768 @75 60.02 75.03 *

1,024 × 768 @85 68.68 85.00 *

Macintosh 21 inch (1,152 × 870) 68.68 75.06 *

1,280 × 768 @60 47.70 60.00 *

1,280 × 1,024 @60 63.98 60.02 *

1,366 × 768 @60 48.36 60.00 *

Note:

• Signals other than above may not be displayed properly.

• The above signals are reformatted for optimal viewing on your display.

, PR), HDMI and PC

TH-L32A20X

4 Specifications

Power Source AC AUTO 110 - 240 V, 50 / 60 Hz Power Consumption

Average use 94 W Standby Condition 0.3 W

Display panel

Aspect Ratio 16:9 Visible screen size 80 cm (diagonal)

698 mm (W) × 393 mm (H)

Number of pixels 1,049,088 (1,366 (W) × 768 (H))

Sound

Speaker WOOFER × 2 pcs, 8 Ω

MID RANGE × 2 pcs, 8 Ω

Audio Output WOOFER : 20 W (10 W + 10 W), 10% THD

Headphones M3 (3.5 mm) stereo mini Jack × 1

PC signals VGA, SVGA, WVGA, XGA

Receiving Systems / Band name 17 SYSTEMS FUNCTIONS

Receiving Channels (Regular TV)

PAL B/ G 2 - 12 (PAL / SECAM B, K1)

UHF BAND 21 - 69 (PAL G, H, I / SECAM G, K, K1)

28 - 69 (PAL B AUST.) 13 - 57 (PAL D, K) 13 - 62 (NTSC M JAPAN) 14 - 69 (NTSC M USA)

CATV S1 - S20 (OSCAR)

1 - 125 (USA CATV)

C13 - C49 (JAPAN)

S21 - S41 (HYPER)

Z1 - Z37 (CHINA)

Aerial - Rear VHF / UHF Operating Conditions

Connection Terminals

AV1 Input AUDIO L-R RCA PIN Type × 2 0.5 V [rms]

VIDEO RCA PIN Type × 1 1.0 V [p-p] (75 Ω) COMPONENT Y 1.0 V [p-p] (including synchronization)

AV2 Input AUDIO L-R RCA PIN Type × 2 0.5 V [rms]

VIDEO RCA PIN Type × 1 1.0 V [p-p] (75 Ω)

MID RANGE : 10 W (5 W + 5 W), 10% THD

SXGA, WXGA ...... (compressed)

Horizontal scanning frequency 31 - 69 kHz Vertical scanning frequency 59 - 86 Hz

1 PAL B, G, H 2 PAL I 3 PAL D, K 4 SECAM B, G 5 SECAM D, K 6 SECAM K1 7 NTSC M (NTSC 3.58 / 4.5MHZ) 8 NTSC 4.43 / 5.5 MHz

9 NTSC 4.43 / 6.0 MHz 10 NTSC 4.43 / 6.5 MHz 11 NTSC 3.58 / 5.5 MHz 12 NTSC 3.58 / 6.0 MHz 13 NTSC 3.58 / 6.5 MHz 14 SECAM I 15 PAL 60 Hz / 5.5 MHz Playback from Special Disc Players and 16 PAL 60 Hz / 6.0 MHz 17 PAL 60 Hz / 6.5 MHz

0 - 12 (PAL B AUST.)

1 - 9 (PAL B N.Z.) 1 - 12 (PAL / SECAM D) 1 - 12 (NTSC M JAPAN) 2 - 13 (NTSC M USA)

5A, 9A (AUST.)

Temperature : 0°C - 40°C Humidity : 20 % - 80 % RH (non-condensing)

, PR/C

B/CB

Reception of broadcast transmission and

playback from video cassette tape recorders.

Playback from special VCR’s or DVD.

Special VCR’s or DVD.

± 0.35 V [p-p]

AV3 Input AUDIO L-R RCA PIN Type × 2 0.5 V [rms]

VIDEO RCA PIN Type × 1 1.0 V [p-p] (75 Ω)

Monitor Output AUDIO L-R RCA PIN Type × 2 0.5 V [rms] (high impedance)

VIDEO RCA PIN Type × 1 1.0 V [p-p] (75 Ω)

Others HDMI 1 - 3 Input TYPE A Connectors • This TV supports “HDAVI Control 5” function.

PC Input HIGH-DENSITY D-SUB 15 PIN R, G, B / 0.7 V[p-p] (75 Ω)

HD, VD / TTL LEVEL 2.0-5.0 V [p-p] (high impedance)

Card Slot SD Card slot × 1

Dimension (W x H x D) 855 mm × 553 mm × 217 mm (With Pedestal)

855 mm × 513 mm × 120 mm (TV only)

Mass 12.0 kg Net (With Pedestal)

10.0 kg Net (TV only)

Note

Design and Specifications are subject to change without notice. Mass and Dimensions shown are approximate.

TH-L32A20X

5 Service Mode

5.1. How to enter into Service Mode

While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds.

5.1.1.

• Value is shown as a hexadecimal number.

• Preset value differs depending on models.

• After entering the adjustment mode, take note of the value in each item before starting adjustment.

Contents of adjustment mode

Main item Sub item Sample Data Remark

ADJUST CONTRAST 000

COLOR 4C

TINT 00

SUB-BRT 808

BACKLGT 22E

B-Y-G 34

R-Y-A 00

WB-ADJ R-GAIN F7

G-GAIN FB

B-GAIN DB

R-CENT 82

G-CENT 80

B-CENT 86

OPTION Boot ROM Factory Preset.

STBY-SET 00

EMERGENCY ON

CLK MODE 00

CLOCK 0E4

RM-SET 00 Fixed.

SRV-TOOL 00 See next.

5.1.2. How to exit

Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.

TH-L32A20X

5.2. SRV-TOOL

5.2.1. How to access

1. Select [SRV-TOOL] in Service Mode.

2. Press [OK] button on the remote control.

5.2.2. Display of SOS History

SOS History (Number of LED blinking ) indication. From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment. This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory shipment setting].

5.2.3. POWER ON TIME/COUNT

Note : To display TIME/COUNT menu, highlight position, then press MUTE for 3sec. Time : Cumulative power on time, indicated hour : minute by decimal Count : Number of ON times by decimal Note : This indication will not be cleared by either of the self-checks or any other command.

5.2.4. Exit

1. Disconnect the AC cord from wall outlet.

TH-L32A20X

5.3. Service Mode Adjustment

1. Press the “RECALL” button on the remote control and press “ -” vol button on the LCD panel.

2. Press button number 1 on the remote control to select for Adjustment.

3. Self Check to Exit.

5.3.1. Self Check Mode

1. Press the “MENU” button (on the remote control) and the “DOWN” button on the LCD panel.

2. Press ON/OFF button on the panel to Exit.

5.3.2. Hotel Mode Adjustment

1. Press the “VOLUME DOWN” button on the TV panel and simultaneously press the AV button on the remote control 3 times to enter Hotel Mode.

2. Set Hotel mode “on”, then press “EXIT” to come out.

5.3.3. Hotel Mode

Item Function

Hotel Mode Select hotel mode ON/OFF

Initial INPUT Select input signal modes.

Initial POS Select programme number.

Initial VOL level Adjust the volume when each time power is

Maximum VOL level

Button lock Select local key conditions.

Remote lock Select remote control key conditions.

Set the input, when each time power is switched on. Selection : OFF/Analogue TV/Digital TV/AV1/AV2/AV3/PC/ HDMI1/HDMI2/HDMI3

• Off: give priority to a last memory.

• Selectable input is depend on the model.

Selection : Off/0 to 100

• Off: give priority to a last memory.

switched on. Selection/Range : Off/0 to 100

• Off: give priority to a last memory.

Adjust maximum volume. Range : 0 to 100

Selection : Off/SETUP/MENU/All

• Off: altogether valid.

• SETUP: only F-key is invalid. (Tuning guide (menu) can not be selected.)

• MENU: only F-key is invalid. (only Volume/Mute can be selected.)

• ALL: altogether invalid.

Selection : Off/SETUP/MENU

• Off: altogether valid.

• SETUP: only Setup menu is invalid.

• MENU: Picture/Sound/Setup menu are invalid.

TH-L32A20X

6 Troubleshooting Guide

Use the self-check function to test the unit.

1. Checking the IIC bus lines

2. Power LED Blinking timing

6.1. Check of the IIC bus lines

6.1.1. How to access

Self-check indication only: Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds. Self-check indication and forced to factory shipment setting: Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.

6.1.2. Exit

Disconnect the AC cord from wall outlet.

6.1.3. Screen display

6.1.4. Check Point

Confirm the following parts if NG was displayed.

TH-L32A20X

6.2. Power LED Blinking timing chart

1. Subject Information of LED Flashing timing chart.

2. Contents When an abnormality occurs, the protection circuit will operate and reset the unit to stand by mode. During this time, the defective block can be identified by the number of blinking times of the Power LED on the front panel of the unit as follow:

Blinking times Contents BOARD

1 Inverter_SOS P BOARD

2 SUB 1.8V_SOS A BOARD

3 SUB 1.2V_SOS A BOARD

4 POWER_SOS P/A BOARD

5 SUB 5V_SOS A BOARD

9 TCON_SOS A BOARD

10 SUB 3.3V_SENSE A BOARD

11 DCDC_SOS A BOARD

12 SOS A BOARD

6.3. No Power

First check point There are following 2 states of No Power indication by power LED.

1. No lit

2. Red is lit then turns red blinking a few seconds later. (See 6.2.)

7 Disassembly and Assembly Instructions

7.1. AC Cord Dressing

TREATMENT AC CORD.

TH-L32A20X

7.2. AC Cord Installation

1. Put on the AC CORD BRACKET on the CABINET.

2. Fix the AC CORD BRACKET with SCREW.

3. Insert AC CORD connector into P-PCB connector.

4. Clamp the AC CORD.

5. Insert AC CORD bushing into the AC CORD BRACKET.

6. AC code is pushed into the bottom of the bracket.

7.3. VESA Rail Installation

1. Stick the FELT.

2. Metal Support on the LCD PANEL.

(insert positioning.

3. Fix them with SCREW.

→

)

TH-L32A20X

7.4. VESA Metal Assembly

1. Put VESA METAL TOP AT L & R on the METAL SUPPOUT.

2. Fix them with SCREW.

7.5. Control Panel Assembly

1. Stick the FELT to CONTROL BUTTON.

2. Wire connecting. (K1)

3. Assemble POWER BUTTON to the K-PRINT.

4. Assemble K-PRINT, CONTROL BUTTON, CONTROL PANEL BRACKET.

5. Fix them with SCREWS.

6. Stick the FELT to CONTROL PANEL BRACKET.

TH-L32A20X

7.6. Side AV Bracket Assembly

1. Put SIDE AV BRACKET ASSY ON LCD PANEL.

2. Fix them with screw.

7.7. SP Installation

1. Fix SP RUBBER BUSH on SP UNIT.

2. Fix SP UNIT on the SP Bracket.

3. Fix them with SCREW.

4. Stick EPT SEAL on SP Bracket.

TH-L32A20X

7.8. LCD Panel Installation

Put LCD PANEL on the CABINET.

7.9. LED Panel Installation & Fitting

1. Fix LED PANEL on CABINET.

2. Wire connecting wire make sure fully insert at cabinet slit (V10).

3. Put V-PCB on CABINET.

4. Fix them with SCREW.

TH-L32A20X

7.10. LCD Mounting Installation 1

1. Put clamper on METAL BRACKET BOTTOM.

2. Put METAL BRACKET BOTTOM on the LCD PANEL.

3. Fix them with screw.

4. Wire dressing and lock CLAMPER.

7.11. LCD Mounting Installation 2

1. Put BARRIER & METAL BRACKET TOP-L on the LCD PANEL.

2. Fix them with screw.

TH-L32A20X

7.12. LCD Mounting Installation 3

1. Put LCD CORNER MTG/LCD-SIDE MTG & TOP MOUNTING ® ON THE LCD PANEL.

2. Fix them with screw.

7.13. Metal Bracket Installation

1. Put Metal Bracket Top R on the LCD PANEL.

2. Fix them with SCREW.

3. Insert the CLAMPER.

TH-L32A20X

7.14. LVDS Installation

1. Put LVDS HARNESS to LCD PANEL with FELT.

→

ii → iii → iv.

2. Put PET/AL-TAPE on LCD PANEL.

7.15. PCB and Clamper Assembly

1. Put the P-PCB, A-PCB on the MTG METAL.

2. Fix them with SCREWS.

3. Setting the CLAMPER.

4. Insert inv-lead in P PCB.

TH-L32A20X

7.16. PB MTG Installation

1. Put METAL BRACKET PCB-AS/AL on the LCD PANEL.

2. Fix them with SCREW. Add wire A13~L13 and fix 2 pcs felt follow the picture.

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