Panasonic TH-37LRT12U, TH-37LRT12M, TH-37LRT12A, TH-32LRT12U, TH-32LRT12M Service Manual

...

Order Number PTWTV0909004CE

High Definition Hospitality LCD Display

Model No. TH-37LRT12U/M/A

TH-32LRT12U/M/A-B

TABLE OF CONTENTS

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

1.1. General Guidelines---------------------------------------- 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. Important Notice (TH-32LRT12U/M/A-B)------------ 6

3.2. Different P.C.B. --------------------------------------------6

3.3. Service Hint (TH-32LRT12U/M/A-B)------------------ 7

3.4. Service Hint (TH-37LRT12U/M/A)--------------------- 8

3.5. Applicable signals ----------------------------------------- 9

4 Specifications ----------------------------------------------------10

4.1. TH-32LRT12U/M/A-B------------------------------------10

4.2. TH-37LRT12U/M/A---------------------------------------11

5 Factory Mode -----------------------------------------------------12

5.1. How to enter into Factory Mode ----------------------12

5.1.1. Key command ----------------------------------------12

5.1.2. Contents of adjustment mode --------------------12

5.2. How to exit -------------------------------------------------13

PAGE PAGE

6 Operating Instructions ----------------------------------------14

6.1. On-Screen Menu Display ------------------------------14

6.2. Hotel Mode ------------------------------------------------ 15

6.2.1. Hotel mode setup -----------------------------------15

6.2.2. Hotel mode menu list-------------------------------16

7 Troubleshooting Guide --------------------------------------- 17

7.1. No Power---------------------------------------------------17

7.2. No Picture-------------------------------------------------- 17

8 Disassembly and Assembly Instructions--------------- 18

8.1. TH-32LRT12U/M/A-B Instructions-------------------18

8.1.1. Removal of Pedestal Assy and Back Cover---------------------------------------------------18

8.1.2. Removal of EMI Case Unit------------------------ 18

8.1.3. Removal of the Main PCB, Power PCB, and RS232 PCB-------------------------------------19

8.1.4. Removal of Operation Button -------------------- 19

8.1.5. Removal of IR PCB and AV3 PCB--------------19

8.1.6. Removal of Speaker (L, R)------------------------19

8.1.7. Removal of LCD Panel and Cabinet ----------- 20

8.2. TH-37LRT12U/M/A Instructions----------------------20

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

8.2.1. Removal of Back Cover----------------------------20

8.2.2. Removal of Pedestal Assy------------------------20

8.2.3. Removal of EMI Case and Wall Mount Holder --------------------------------------------------20

8.2.4. Removal of Main PCB, Power PCB, and RS232 PCB-------------------------------------------21

8.2.5. Removal of Power SW PCB and Operation PCB---------------------------------------21

8.2.6. Removal of Speaker (L, R)------------------------21

8.2.7. Removal of LCD Panel and Cabinet------------22

9 Adjustments and Upgrade-----------------------------------23

9.1. White Balance Adjustment (TH-32LRT12U/M/ A-B)----------------------------------------------------------23

9.1.1. Test Condition----------------------------------------23

9.1.2. Low Light Adjustment ------------------------------23

9.1.3. High Light Adjustment------------------------------23

9.2. White Balance Adjustment (TH-37LRT12U/M/ A)-------------------------------------------------------------23

9.2.1. Test Condition----------------------------------------23

9.2.2. Low Light Adjustment ------------------------------23

9.2.3. High Light Adjustment------------------------------23

9.3. Software Upgrade----------------------------------------24

9.3.1. Main micon eeprom upgrade---------------------24

9.3.2. Sub micon upgrade---------------------------------27

10 Block Diagram ---------------------------------------------------30

10.1. System Block Diagram----------------------------------30

10.2. Power Unit Block Diagram for TH-32LRT12U/ M/A-B--------------------------------------------------------31

10.3. Panel Block Diagram for TH-32LRT12U/M/AB--------------------------------------------------------------32

10.4. Power Unit Block Diagram for TH-37LRT12U/ M/A-----------------------------------------------------------33

10.5. Power Unit Block Diagram for TH-37LRT12U/ M/A-----------------------------------------------------------34

11 Wiring Connection Diagram---------------------------------35

1 1 .1. Wiring (1) TH-32LRT12U/M/A-B --------------------- 35 1 1 .2. Wiring (2) TH-32LRT12U/M/A-B --------------------- 36 1 1 .3. Wiring (3) TH-32LRT12U/M/A-B --------------------- 37 1 1 .4. Wiring (4) TH-37LRT12U/M/A ------------------------ 38

12 Schematic Diagram---------------------------------------------39

12.1. Schematic Diagram Notes-----------------------------39

12.2. Main Board (1 of 15) Schematic Diagram ---------40

12.3. Main Board (2 of 15) Schematic Diagram ---------41

12.4. Main Board (3 of 15) Schematic Diagram ---------42

12.5. Main Board (4 of 15) Schematic Diagram ---------43

12.6. Main Board (5 of 15) Schematic Diagram ---------44

12.7. Main Board (6 of 15) Schematic Diagram ---------45

12.8. Main Board (7 of 15) Schematic Diagram ---------46

12.9. Main Board (8 of 15) Schematic Diagram ---------47

12.10. Main Board (9 of 15) Schematic Diagram ---------48

12.1 1 . Main Board (10 of 15) Schematic Diagram--------49

12.12. Main Board (11 of 15) Schematic Diagram--------50

12.13. Main Board (12 of 15) Schematic Diagram--------51

12.14. Main Board (13 of 15) Schematic Diagram--------52

12.15. Main Board (14 of 15) Schematic Diagram--------53

12.16. Main Board (15 of 15) Schematic Diagram--------54

12.17. Keypad Board Schematic Diagram (TH32LRT12U/M/A-B)---------------------------------------55

12.18. AV3 Board Schematic Diagram (TH32LRT12U/M/A-B)---------------------------------------56

12.19. AV3+SW Board Schematic Diagram (TH37LRT12U/M/A)------------------------------------------ 57

12.20. RS232 Board Schematic Diagram ------------------ 58

12.21. IR Board Schematic Diagram ------------------------ 59

12.22. Power Board Schematic Diagram (1/2) (for TH-32LRT12U/M/A-B)---------------------------------- 60

12.23. Power Board Schematic Diagram (2/2) (for TH-32LRT12U/M/A-B)---------------------------------- 61

12.24. Power Board Schematic Diagram (for TH37LRT12U/M/A)------------------------------------------ 62

13 Printed Circuit Board------------------------------------------ 63

13.1. Main PCB (Component Side)------------------------- 63

13.2. Main Board (Foil Side) --------------------------------- 64

13.3. A V3+SW and Keypad Board-------------------------- 65

13.4. A V3, IR, and RS232 Board---------------------------- 66

13.5. Power Board (Top Side) ------------------------------- 67

13.6. Power Board (Bottom Side)--------------------------- 68

14 Exploded View and Replacement Parts List----------- 69

14.1. Exploded View and Mechanical Replacement Parts List (TH-32LRT12U/M/A-B) ------------------- 69

14.2. Exploded View and Mechanical Replacement Parts List (TH-37LRT12U/M/A) ---------------------- 72

14.3. Electrical Replacement Parts List ------------------- 75

14.3.1. Replacement Parts List Notes------------------- 75

14.3.2. Electrical Replacement Parts List--------------- 76

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

1 Safety Precautions

1.1. General Guidelines

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

2. 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.

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

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

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

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

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 above 4Mohm. When the exposed metal does not have a return path to

the chassis, the reading must be .

ŵŦŴŵġűŰųŵ

1500 0.22

Figure 1. Leakage Current Test Tool

R 500

10k

)

0.022

1.1.2. Leakage Current Check (See Figure 1 and Figure 2)

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

2. Make a leakage current test loop as shown in Figure 1.

3. The method of connecting leakage current test loop is shown in Figure 2.

4. The measure value of U1(V) should be less than 35Vp and U2(V) should be less than 0.35Vp.

)

TH-32/37LRT12

leakage current

The GND of test ports

AC IN

test tool

AC N

Figure 2.

U1, U2

fix port

oscilloscope

leakage current outlet

AC POWER

SOURCE

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

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 su ch 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-32LRT12U/M/A-B * TH-37LRT12U/M/A

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 proc ess 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 st andard 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 sol der. 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-32LRT12U/M/A-B * TH-37LRT12U/M/A

3 Service Navigation

3.1. Important Notice

3.1.1. MANUFACTURING ID NO.

This service manual is for the MANUFACTURING ID NO. indicated in the label at side and the model name plate of the unit.

Label at side

Model Name Plate

3.2. Different P.C.B.

TH-32LRT12U/M/A TH-32LRT12U/M/A-B TNM4CD0819FA TNM4CD0819FD MAIN BOARD only change soft TNM4CD0822F TNM4CD0821F POWER BOARD

TNM4CD0906F IR TNM4CD0809F AV3 TNM4CD0810F KEY TNM4CD0820F RS232

Parts No. Parts name & Description Remarks

3.3. Service Hint

TH-32LRT12 U/M/A-B

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

Remove the Rear Cover

Back Cover

AC Cord

Pedestal Assy

1. Remove: 15 screws ( ) XTN4+15JFZ 3 screws ( ) XTB4+10FFZ 1 screw ( ) THT4CM010K 4 screws ( ) XYN4+F11FZ

2. Remove Pedestal Assy

3. Remove AC Cord and Back Cover

KEY

POWER

BOARD

AV3

MAIN

BOARD

RS232

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

3.4. Service Hint

TH-37LRT12 U/M/A

Remove the Rear Cover

Back Cover

AC Cord

1. Remove: 14 screws ( ) XTB4+15JFZ 2 screws ( ) XYN4+F10FZ 1 screw ( ) THT4CM010K

2. Remove AC Cord and Back Cover

POWER BOARD

AV3+SW

Board Name Function

MAIN BOARD Sync Processor, Audio Processor,

POWER BOARD Power Supply Unit

AV3+SW AV3+KEY Switch

RS232 RS-232 Input terminal

MAIN

BOARD

IR Remote Switch, LED-G, R, Power Switch

RS232

Speaker Out Amplifier, Slot Interface (Audio / Video / Sync Input Switch)

3.5. Applicable signals

Applicable input signals for Mini D-sub 15P

Signal name +RUL]RQWDOIUHTXHQF\

1 640 x 480 @ 60 Hz 31.47 59.94 25.18 2 640 x 480 @ 72 Hz 37.86 72.81 31.5

3 640 x 480 @ 75 Hz 37.50 75.00 31.5 4 800 x 600 @ 56 Hz 35.16 56.25 36.0 5 800 x 600 @ 60 Hz 37.88 60.32 40.0 6 800 x 600 @ 72 Hz 48.08 72.19 50.0 7 800 x 600 @ 75 Hz 46.88 75.00 49.5 8 1024 x 768 @ 60 Hz 48.36 60.00 65.0 9 1024 x 768 @ 70 Hz 56.48 70.07 75.0

10 1024 x 768 @ 75 Hz 60.02 75.03 78.75

Applicable input signals for HDMI and YPbPr

HDMI Mode YPbPr Mode

Signal name Signal name

2 480p@60Hz 2 480p@60Hz 3 576i@50Hz 3 576i@50Hz 4 576p@50Hz 4 576p@50Hz 5 720p@50Hz 5 720p@50Hz 6 720p@60Hz 6 720p@60Hz 7 1080i@50Hz 7 1080i@50Hz 8 1080i@60Hz 8 1080i@60Hz 9 1080p@50Hz 9 1080p@50Hz

10 1080p@60Hz 10 1080p@60Hz

480i@60Hz 1 480i@60Hz

N+]

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

9HUWLFDOIUHTXHQF\

+]

'RWFORFNIUHTXHQF\

0+]

Note: Signals without the above specifications may not be displayed properly.

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

4 Specifications

4.1. TH-32LRT12U/M/A-B

Power Source 110 - 127 V AC 50/60 Hz (TH-32LRT12U-B)

220 - 240 V AC, 50/60 Hz (TH-32LRT12M/A-B)

Power Consumption

Power on 155 W

Stand-by condition 1.0 W (TH-32LRT12U-B)

1.5 W (TH32LRT12A/M-B)

Aspect Ratio 16:9 Screen size 27.5" (698 mm) (W) x 15.4" (392 mm) (H) x 31.5" (800 mm) (diagonal)

(No.of pixels) 1,049,088 (1,366 (W) x 768 (H)) [4,098 x 768 dots]

Operating condition

Temperature 32 °F - 104 °F (0 °C - 40 °C)

Humidity 20 % - 80 %

Connection terminals

PC IN 0,1,'68%3,1*9SS

%9SS 59SS

HD/VD: 1.0 - 5.0 Vp-p (high impedance) AUDIO IN (M3 JACK) 0.5 Vrms

AV1-AV3 9,'(2,15&$3,1-$&.[9SS

S VIDEO IN (MINI DIN 4PIN x 3) Y:1.0 9SS&9SS AUDIO IN (RCA PIN JACK x 3) 0.5 Vrms

BPR

HDMI1 - HDMI3 TYPE A Connector x 3

AUDIO OUT RCA PIN JACK x 2 0.5 Vrms

SERIAL EXTERNAL CONTROL TERMINAL (D-SUB 9PIN) RS-232C COMPATIBLE

Dimensions (W × H × D)

Including pedestal 32.4'' (821 mm) x 23" (584 mm) x 9.3" (236 mm)

Display Set only 32.4" (821 mm) x 21.3" (539 mm) x 4.2" (106 mm)

Mass (weight)

Including pedestal approx. 36.4 lbs

Display Set only approx. 30.9 lbs

Sound

Audio Output 20W [10 W + 10 W] (10 % THD)

Y (RCA PIN JACK x 1) 9SS P

5&$3,1-$&.[9SS

B/PR

AUDIO IN (RCA PIN JACK x 1) 0.5 Vrms

Note: Design and specifications are subject to change without notice. Mass and dimensions shown are approximate.

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

4.2. TH-37LRT12U/M/A

Power Source 110 - 127 V AC 50/60 Hz (TH-37LRT12U)

220 - 240 V AC, 50/60 Hz (TH-37LRT12A/M)

Power Consumption

Power on 190 W

Stand-by condition 1.0 W (TH-37LRT12U)

1.5 W (TH-37LRT12A/M)

Aspect Ratio 16:9 Screen size 32.2" (819 mm) (W) x 18.1" (460 mm) (H) x 37.0" (940 mm) (diagonal)

(No.of pixels) 1,049,088 (1,366 (W) x 768 (H)) [4,098 x 768 dots]

Operating condition

Temperature 32 °F - 104 °F (0 °C - 40 °C)

Humidity 20 % - 80 %

Connection terminals

PC IN 0,1,'68%3,1*9SS

HD/VD: 1.0 - 5.0 Vp-p (high impedance) AUDIO IN (M3 JACK) 0.5 Vrms

AV1-AV3 9,'(2,15&$3,1-$&.[9SS

S VIDEO IN (MINI DIN 4PIN x 3) Y:1.0 9SS&9SS AUDIO IN (RCA PIN JACK x 3) 0.5 Vrms

BPR

HDMI1 - HDMI3 TYPE A Connector x 3

AUDIO OUT RCA PIN JACK x 2 0.5 Vrms

SERIAL EXTERNAL CONTROL TERMINAL (D-SUB 9PIN) RS-232C COMPATIBLE

Dimensions (W × H × D)

Including pedestal 37.4'' (949 mm) x 25.6" (650 mm) x 12.1" (307 mm)

Display Set only 37.4" (949 mm) x 24" (608 mm) x 4.1" (104 mm)

Mass (weight)

Including pedestal approx. 47.4 lbs

Display Set only approx. 39.7 lbs

Sound

Audio Output 20W [10 W + 10 W] (10 % THD)

Note: Design and specifications are subject to change without notice. Mass and dimensions shown are approximate.

Y (RCA PIN JACK x 1) 9SS P

5&$3,1-$&.[9SS

B/PR

AUDIO IN (RCA PIN JACK x 1) 0.5 Vrms

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

5 Factory Mode

5.1. How to enter into Factory Mode

Press and hold [VOL+] button and [VOL-] button of the main unit more than 3 seconds.

Main item

Sub item

Software Version

SPV7100

SPV7100 PICTURE R OFFSET G OFFSET B OFFSET R GAIN G GAIN B GAIN 516 CONTRAST 516 BRIGHTNESS 516 SATURATION 516 HUE H PEAK BP GAIN H PEAK HP GAIN H PEAK LP GAIN H PEAK CORING H PEAK CLIP V PEAK GAIN V PEAK CLIP NR PHASE

NTSCM TH-32LRTB V3.0 090923 WTCodeVersion V3.0

FACTORY MENU

OD OE OF

0x7A 0x7A 0x7A

0x80 0x80 0x80 0x85

0x1A

0x90 0x00 0x02

0x0D

0x04 0x00 0x0F 0x18 0x10

OFF

0x00

056A0220

5.1.1. Key command

[ ] button...Main items Selection in forward direction and value of sub items change. [ ] button...Main items Selection in reverse direction and value of sub items change. [ ] button...Sub items Selection in forward direction [ ] button...Sub items Selection in reverse direction [OK] button...Back to main items selection from sub items selection

5.1.2. Contents of adjustment mode

• Value is shown as a hexadecimal number.

• Preset value differs depending on mode

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

Main item Sub item Adjustment

R OFFSET Set R Brightness G OFFSET Set G Brightness B OFFSET Set B Brightness

R GAIN R white-Balance

G GAIN G white-Balance

B GAIN B white-Balance

516 CONTRAST Set_Decoder_Contrast

516 BRIGHTNESS Set_Decoder_Brightness

(SPV7100 PICTURE)

516 SATURATION Set_Decoder_Saturation

516 HUE Set_Decoder_Hue H PEAK BP GAIN Static gain after BP for Peaking H PEAK HP GAIN Static gain after HP for Peaking H PEAK LP GAIN Static gain after LP for Peaking H PEAK CORING Coring threshold for Peaking

H PEAK CLIP The adjusted threshold for Peaking

V PEAK GAIN Static gain for Vertical Edge Enhancement

V PEAK CLIP Adjusted threshold for Vertical Edge Enhancement

NR Noise reduction

PHASE PLL clock phase

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

Main item Sub item Adjustment

ADC PR GAIN R channel gain Register

ADC Y GAIN G channel gain Register

(SPV 7100 ADC)

(SPV 7100 AUDIO)

(SPV 7100 SCALER)

(SPV 7100 SYSTEM)

ADC PB GAIN B channel gain Register

ADC PR OFFSET R channel OFFSET Register

ADC Y OFFSET G channel OFFSET Register

ADC PB OFFSET B channel OFFSET Register

ADC Auto White AutoWhite

100HZ EQ MAIN Equalizer Band 1 Control (100 Hz)

300HZ EQ MAIN Equalizer Band 2 Control (300 Hz) 1000HZ EQ MAIN Equalizer Band 3 Control (1000 Hz) 3000HZ EQ MAIN Equalizer Band 4 Control (3000 Hz) 8000HZ EQ MAIN Equalizer Band 5 Control (8000 Hz)

DEC LEV LEV_ADJ_DEM_REG(level adjust)Stereo RF MODE

MONO LEV LEV_ADJ_DEM_REG(level adjust)MONO RF MODE

NIC LEV LEV_ADJ_DEM_REG(extra gain for NICAM) RF MODE SAP LEV LEV_ADJ_DEM_REG(level adjust)SAP RF MODE ADC LEV LEV_ADJ_DEM_REG(level adjust)AV Ypbpr PC MODE

DIGIN LEV LEV_ADJ_DEM_REG(level adjust)HDMI MODE

LOUD Set_Loudness_On_Off

LOUD LEV Set_LOUD_LEV

LOUD FIL Set_LOUD_LEV (500Hz or 1000Hz)filter

SOUND AI AVL Reference Level

AUDIO OUT LEV Set_AUDIO_OUT_LEV

H START Set_H_Start_Position V START Set_V_Start_Position

H OVERSCAN Set_H_Overscan V OVERSCAN Set_V_Overscan

OPTION Set_H_V_Overscan_Reference_Point

POLLING STATE Set_Polling_State

EEPROM RESET Reset_EEPROM

BURN IN BurnIn _Set

UART ON DSUB Set_UART_State

OpenDebug OpenDebugInformation

Baud Rate Set_BaudRate

SPREAD SPECTRUM Set_Spread_Spectrum

DPLLMD-L Display PLL modulation setting

DPLLCU Display PLL charge pump current setting

BANK Set_Bank

READ Register_Read WRITE Register_Write VALUE Set_Register_Value

5.2. How to exit

Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control or press and hold [VOL+] and [VOL-] buttons on the main unit at the same time.

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

6 Operating Instructions

6.1. On-Screen Menu Display

2Q6FUHHQ0HQX'LVSOD\

V arious menus allow you to make settings for the picture, sound, and other functions so that you can enjoy watching Display best suited for you.

5HPRWH&RQWURO Unit

'LVSOD\WKHPHQXVFUHHQ

Select the menu.

Main Menu

Picture Menu

Sound Menu

Setup Menu

Select the item.

Picture Menu

Picture Mode Standard

Contrast

Brightness Color Tint Sharpness

User Off

Press the menu button.

Select

Action

Select

32 32 32 00 12

Press the MENU button.

Press the CH buttons to select the menu.

Press the MENU button.

Press the CH < or > buttons to select the item.

(Example: Picture Menu)

$GMXVWRUVHOHFW

Contrast

([LWWKHPHQX

Press the VOL + or – buttons.

RETURN

Press several times until you exit the menu.

Press to return to the

previous menu.

Adjust

Press the INPUT button several times until you exit the menu.

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

6.2. Hotel Mode

The Hotel Mode is a special function which allows users to configure settings to suit certain locations or applications.

6.2.1. Hotel mode setup

Press

Select Setup Menu.

Select Movie Mode.

Press and hold

Select the item and set desired settings.

Main Menu

Picture Menu

Sound Menu

Setup Menu

Language

Movie Mode

to display the menu screen.

English

MUTE

for more than 3 seconds.

Press to select the Setup menu. Press to enter menu.

Press to select the item.

Setup Menu

Initial Input

Onscreen Display Initial VOL Level Maximum VOL Level Input Lock Button Lock Remocon User Level

Press

RETURN

Off On Off Off Off Menu Off

repeatedly to exit the menu.

Press to select the item.

Press to adjust settings.

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

6.2.2. Hotel mode menu list

Item Details

Off

RF AV1 AV2 AV3 YPbPr HDMI1 HDMI2 HDMI3 PC

Adjusts the input signal when the unit is turned on.

Initial Input

Onscreen Display

Initial VOL Level

Maximum VOL

Level

Off: The input signal when the power was last turned off is set.

Note:

This menu is available only when "Input Lock" is "Off". RF mode is available only when Pal Tuner is connected.

Off: Onscreen information is not displayed. On: Onscreen information is displayed, such as:

•

Power on display

•

Input signal switch display

•

No signal display

•

Mute and the remaining time of off-timer

On 1: Onscreen information is displayed, except some RS-232C communication information is not

displayed.

Used to set the volume level at power-on.

Off: The volume is set to the same level as when the power was last turned off. 0 to 63: The volume is set to the selected level.

Note:

It is not possible to select an Initial VOL Level setting which is higher than the Maximum VOL Level setting. Used to set the volume level so that it will not exced the maximum setting.

Off: No restrictions are placed on the volume level. 0 to 63: The volume is restricted to the selected level.

Note:

It is not possible to select a Maximum VOL Level setting which is lower than the Initial VOL Level setting.

Input Lock

Button Lock

Remocon User

Level

Off

RF AV1 AV2 AV3 YPbPr HDMI1 HDMI2 HDMI3 PC

Locks the input switch operation.

Off: Input switch can be used.

Note:

RF mode is available only when Pal Tuner is connected. Used to restrict the operation of the buttons on the main unit.

Off: All the buttons on main unit can be used. Menu: Locks the Menu button on the main unit. On: Locks all the buttons on the main unit except the Power button.

Off

Off: You can use all of the buttons on the remote control. User1:You can only use

User2:You can only use

User1 User2 User3

MUTE

INPUT

POWER

, ,

POWER

button on the remote control.

VOL

buttons on the remote control.

User3:Locks all the buttons on remote control. Note: Hotel Mode menu may not be accessible when you select “User2” or “User3”. When this happens,

press the VOL- on the display and the OK button on the remote control at the same time. The message “Are you sure to out the mode?” will appear, select “Yes”.

7 Troubleshooting Guide

7.1. No Power

NO POWER

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

7.2. No Picture

Check

Power board

Check

Fuse F1

Conn ec tor CN3ΕCN4ΕCN7

NO PICTURE

Check

OSD

Conn ec tor J7ΕCN10

Check Main board

Conn ec tor J5ΕCN10

Check

Chec k M ai n bo a r d

Location CN1(Flash IC)

Check

Location U14(SPV7100P)

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

8 Disassembly and

Assembly Instructions

Caution:

Exchange printed circuit board after confirm parts number.

Parts name & Descrption Parts No. MAIN PCB TNM4CD0819FD POWER PCB TNM4CD0821F

8.1. TH-32LRT12U/M/A-B Instructions

• To disassemble P.C.B., wait for 1 minute after power was off for discharge from electrolysis capacitors.

• , , , , , and marks indicate screw positions.

8.1.1. Removal of Pedestal Assy and Back Cover

1. Remove screws (x15 , x3 , x1 , x4 ) and then remove the Pedestal Assy.

Back Cover

2. Remove 4 screws ( ), disconnect the connectors and then remove the EMI Case.

EMI Case

3. Disconnect the connectors including Speaker (R), speaker (L), CON33, CON42, CON34 CN1 (panel inverter), CN1 (panel driver), and remove the 13 foil.

CN1

AC Cord

Pedestal Assy

2. Remove the AC cord from the slot.

3. Remove the Back Cover.

8.1.2 Removal of EMI Case Unit

1. Remove screws (x3 , x4 , x3 ) and then remove the AV co ve r.

AV Cover

CON34

CN1

CON33

CON42

Speaker (L)Speaker (R)

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

ON1C

8.1.3 Removal of the Main PCB, Power PCB, and RS232 PCB

1. Turn the EMI case over and then remove 8 screws.

• Disconnect the connectors (CON7, CON1, CON34, CON8, CON12, CON11, J5, J7, J8, CON10).

• Unfasten the wire clip

• Disconnect the connectors CON1 of the RS232 board.

• Disconnect the connectors including CN3, CN4, CN7, and CN1 (AC CORD).

Main PCB

¿, ¡, ¬.

Power PCB

8.1.5 Removal of IR PCB and AV3 PCB

1. Remove 2 screws ( ) and then remove the IR PCB.

2. Remove 2 screws ( ) and then remove the AV3 PCB.

IR PCBAV3 PCB

8.1.6 Removal of Speaker (L, R)

1. Connected terminal hook is pushed, and the speaker lead in 4 places is pulled out.

2. To safely remove speaker, see picture below:

CN3

RS232

CON13

CON34 CON8

CON1

CON7

CON12

CON11

J5 J8

CON10

CN1

CN4

CN7

8.1.4 Removal of Operation Button

1. Remove the Operation Button.

2. Remove 2 screws and then remove the key PCB.

Key PCB

OPeration Button

3. Remove 8 screws and then remove the Speaker (L, R).

Speaker (R)

Speaker (L)

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

8.1.7 Removal of LCD Panel and Cabinet

1. Remove 11 screws and then remove the Panel Fixed.

Panel Fixed Panel Fixed

Panel Fixed

2. Remove the LCD Panel from the Cabinet.

Panel Fixed

8.2. TH-37LRT12U/M/A Instructions

• To disassemble P.C.B., wait for 1 minute after power was off for discharge from electrolysis capacitors.

• , , , , , and marks indicate screw positions.

8.2.1 Removal of Back Cover

1. Remove screws (x14 , x2 , x1 ) and then remove the Back Cover.

2. Remove the AC cord from the slot.

Back Cover

AC Cord

8.2.2 Removal of Pedestal Assy

1. Remove 4 screws ( ) and then remove the Pedestal Assy.

Pedestal Assy

8.2.3 Removal of EMI Case and Wall Mount Holder

1. Remove 9 screws ( ) and then remove the EMI Case.

2. Remove 4 screws ( ) and then remove the Wall Mount Holder.

Wall Mount Holder

EMI CASE

Wall Mount Holder

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

8.2.4 Removal of Main PCB, Power PCB, and RS232 PCB

1. Remove screws (x4 ) of the Power PCB.

2. Remove screws (x5 , x3 , x3 , x4 PCB.

3. Disconnect the connectors CON1 of the RS232 PCB.

Power PCB

Main PCB

4. Disconnect the connectors (CON7, CON1, CON34, CON8, CON12, CON11, CON10, J5, J8, J7).

• Disconnect the connectors (CON7, CON1, CON34,

CON42, CON8, CON12, CON11, CON10, J5, J8, J7) and then remove the Main PCB.

• Unscrew

¿, ¡, ¬.

• Disconnect the connectors (CN3, CN4, CN7, CN1-AC

CORD) and then remove the Power PCB.

I) of the Main

8.2.5 Removal of Power SW PCB and Operation PCB

1. Remove 4 screws ( ) and then remove the Power SW PCB and Operation PCB.

Power SW PCBOperation PCB

8.2.6 Removal of Speaker (L, R)

1. Connected terminal hook is pushed, and the speaker lead in 4 places is pulled out.

2. To safely remove speaker, see picture below:

CN1

Speaker (R)

CN7

CON34

CN4

CN1

CON33

CN1

CN3

CON10

CON7 J5 J8

SCREW

CON34

CON12

CON11

Speaker (L)

CON1

CON8

CON42

3. Remove 8 screws and then remove the Speaker (L, R).

Speaker (L)Speaker (R)

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

8.2.7 Removal of LCD Panel and Cabinet

1. Remove screws (x5 , x4 ) and then remove the Chassis Frame.

Chassis Frame

2. Remove screws (x8 , x4 ) and then remove the Panel Fixing.

Panel Fixing

3. Remove the LCD Panel from the Cabinet.

9 Adjustments and Upgrade

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

9.1. White Balance Adjustment (TH-32LRT12U/M/A-B)

9.1.1. Test Condition

1. Press the "Factory Settings" button on the custom remote or hold down the "Volume+ -" keys on the screen for 3 seconds to access the "Factory Mode".

2. Software Reset: Before screen warm-up, go to option "0F" in factory mode and at "RESET" press the "Left" button on the remote.

3. Screen Burn-in: Go to option "OF" in factory mode and at "BURN IN", press the "Left" button on the remote to switch to "W" then exit factory mode. Allow to burn in for "1 hour". After burn-in, enter factory mode and change "BURN IN" to "OFF" before proceeding with White Balance Adjustment.

4. White Balance Adjustment: Set TV to “AV1”; Input signal is H Pattern*.

9.1.2. Low Light Adjustment

1. In option "0A" under factory mode, use "R OFFSET " and "B OFFSET" to set the hue and brightness.

x(cd/m

y(cd/m

Y(cd/m

Adjustment (auto)

0.280±0.003 0.280±0.005 0.280±0.01

)

0.285±0.003 0.285±0.005 0.285±0.01

)

3±0.5 3±0.5 3±0.5

)

Adjustment (manual)

Confirmation

9.2. White Balance Adjustment (TH-37LRT12U/M/A)

9.2.1. Test Condition

1. Press the "Factory Settings" button on the custom remote or hold down the "Volume+ -" keys on the screen for 3 seconds to access the "Factory Mode".

2. Software Reset: Before screen warm-up, go to option "0F" in factory mode and at "RESET" press the "Left" button on the remote.

4. White Balance Adjustment: Set TV to “AV1”; Input signal is H Pattern*.

9.2.2. Low Light Adjustment

1. In option "0A" under factory mode, use "R OFFSET" and "B OFFSET" to set the hue and brightness.

x(cd/m

y(cd/m

Y(cd/m

Adjustment (auto)

0.280±0.003 0.280±0.005 0.280±0.01

)

0.285±0.003 0.285±0.005 0.285±0.01

)

3.5±0.5 3.5±0.5 3.5±0.5

)

Adjustment (manual)

Confirmation

9.1.3. High Light Adjustment

1. In option "0A" under factory mode, use "R GAIN" and "B GAIN" to set the hue and brightness.

x(cd/m

y(cd/m

Y(cd/m

Adjustment (auto)

0.280±0.003 0.280±0.005 0.280±0.01

)

0.285±0.003 0.285±0.005 0.285±0.01

)

200±1.0 200±1.0 200±15.0

)

Adjustment (manual)

Confirmation

* H Pattern:

9.2.3. High Light Adjustment

1. In option "0A" under factory mode, use "R GAIN" and "B GAIN" to set the hue and brightness.

x(cd/m

y(cd/m

Y(cd/m

Adjustment (auto)

0.280±0.003 0.280±0.005 0.280±0.01

)

0.285±0.003 0.285±0.005 0.285±0.01

)

200±1.0 200±1.0 200±15.0

)

Adjustment (manual)

Confirmation

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

9.3. Software Upgrade

9.3.1. Main micon eeprom upgrade

How to upgrade:

1. Turn on the display and enter into Factory mode.

2. Use an RS232 cable to connect the display with the computer. The way of connection is shown below:

3. When using a notebook computer for upgrade, use a USB to RS-232 adapter to connect the RS -232 cable to the notebook, then connect the RS-232 cable to the display. (Connect the 9th pin of the RS-232 cable to the ground.)

RS-232 cable

USB to RS-232 adapter

4. Record 0A 6 groups of values as marked below:

SPV7100

NTSCM TH-32LRTB V3.0 090923 WTCodeVersion V3.0

D-SUB 9 pin

FACTORY MENU

OD OE OF

(female)

RS-232 cable

(female)

0x7A 0x7A 0x7A

0x80 0x80 0x80 0x85

0x1A

0x90 0x00 0x02

0x0D

0x04

0x00 0x0F 0x18 0x10

OFF

0x00

056A0220

4. Use a 9 pin D-SUB cable to connect the display with the computer.

5. Open ISP TOOL software on the computer.

6. Select the connected COM port of the computer in the drop-down list.

7. Select Option on the main bar, then change the setting values as below:

8. Click Select File to choose the upgrade file.

TH-32LRT12U/M/A-B * TH-37LRT12U/M/A

9. Click Start to begin upgrading.

10. When upgrade is completed, a window appears as shown below. Then unplug the display after at least 3 seconds.

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