Panasonic TX-32LX500M User manual

© 2005 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
TX-32LX500M
TX-32LX500A
TX-32LX500X
TX-26LX500M
TX-26LX500A
TX-26LX500X
LH41 Chassis
Wide LCD TV
Specifications
Power Source
A
C 110 - 240 V, 50 / 60 Hz
Power Consumption
A
verage use : 137 W (0.8 A) (TX-26LX500)
A
verage use : 168 W (1.0 A) (TX-32LX500)
Standby condition : 0.4 W
LCD Wide XGA (1,366 × 768 pixels)
16 : 9 aspect ratio LCD panel
Visible screen Size 64.8 cmV, 565 mm (W) × 318 mm (H) (TX-26LX500)
80.0 cmV, 697 mm (W) × 392 mm (H) (TX-32LX500)
Sound
Speaker Woofer (Ø80 mm) × 2 pcs, Tweeter (16 mm × 73 mm) ×4 pcs
Audio Output 20 W (5 W + 5 W, 5 W + 5 W), 10% THD
Headphones M3 (3.5 mm) Jack × 1
Scanning format 480i(60Hz), 480p(60Hz), 576i(50Hz), 576p(50Hz), 720p(50Hz), 720p(60Hz), 1080i(50Hz),
1080i(60Hz)
PC signals XGA display
VGA, SVGA, XGA
SXGA...... (compressed)
Horizontal scanning frequency 31 - 69 kHz
Vertical scanning frequency 59 - 86 Hz
ORDER NO. ITD0507041CE

Receiving Systems/ Band name
Receiving Channels Regular TV
VHF BAND 2-12 (PAL / SECAM B, K1)
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)
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)
5A, 9A (AUST.)
Aerial - Rear UHF/VHF
Operating Conditions Temperature : 5 °C - 40 °C
Humidity : 5 % - 90 % RH (non-condensing)
Connection Terminals
AV1/2-Rear VIDEO (RCA Pin Type) 1.0 Vp-p (75 W)
S VIDEO (MINI DIN 4-Pin) Y: 1.0Vp-p (75 W) C: 0.286Vp-p (75 W)
A
UDIO L-R (RCA Pin Type × 2) 0.5 Vrms
AV3-Front
VIDEO (RCA PIN Type) 1.0 Vp-p (75 W)
S-VIDEO (Mini DIN 4-pin) Y: 1.0 Vp-p (75 W) C: 0.286 Vp-p (75 W)
A
UDIO L-R (RCA PIN Type × 2) 0.5 Vrms
AV4-Rear VIDEO (RCA PIN Type) 1.0 Vp-p (75 W)
A
UDIO L-R (RCA PIN Type × 2) 0.5 Vrms
Y 1.0 Vp-p (including synchronization)
PB/CB,P
R/CR±0.35 Vp-p
HDMI
PC
TYPE A Connecter
HIGH-DENSITY D_SUB 15PIN
AUDIO L - R RCA PIN Type × 2
Card slot SD CARD slot × 1, PC CARD slot × 1
MONITOR OUT VIDEO (RCA PIN Type) 1.0 Vp-p (75 W)
A
UDIO L-R (RCA PIN Type × 2) 0.5 Vrms
2
TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

1 Safety Precautions 5
1.1. General Guidelines 5
2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 6
3 Applicable signals 7
4 Self Check Function 8
4.1. Self Check 8
4.2. Power LED Blinking timing chart 9
5 Chassis Board Layout 10
6 Before servicing 11
6.1. Kind and location of the flexible cable and bridge cable
11
6.2. How to remove the connector 12
6.3. Wire dressing 1 13
6.4. Wire dressing 2 14
7 Servicing method 15
7.1. Removing the stand ass’y 15
7.2. Removing the rear cover 15
7.3. Removing the speaker box L and R 15
7.4. Removing the rear AV bracket 16
7.5. Removing the rear metal frame 16
7.6. Removing the P-Board 16
7.7. Removing the DG-Board 16
7.8. Removing the DV-Board 17
7.9. Removing the AP-Board 17
7.10. Removing the H-Board 17
7.11. Removing G-Board bracket (G-Board and GP-Board) 17
7.12. Removing the G-Board and GP-Board 18
7.13. Removing the GS-Board bracket. 18
7.14. Removing the K-Board 18
7.15. Removing the V-Board 19
7.16. Removing the main chassis 19
7.17. Removing the LCD panel 19
8 Service Mode Function 20
8.1. How to enter SERVICE 1 20
8.2. How to enter SERVICE 2 20
8.3. Option Description 23
8.4. Option Code Setting 25
9 Adjustment method 26
9.1. Sub-Contrast/White Balance Adjustment 26
10 Block Diagram 27
10.1. Main Block Diagram 27
10.2. Block Diagram (1 of 6) 28
10.3. Block Diagram (2 of 6) 29
10.4. Block Diagram (3 of 6) 30
10.5. Block Diagram (4 of 6) 31
10.6. Block Diagram (5 of 6) 32
10.7. Block Diagram (6 of 6) 33
11 Schematic Diagram 35
11.1. Schematic Diagram Notes 35
11.2. AP-Board (1 of 2) and K-Board Schematic Diagram 36
11.3. AP-Board (2 of 2) Schematic Diagram 37
11.4. H-Board (1 of 3) Schematic Diagram 38
11.5. H-Board (2 of 3) Schematic Diagram 39
11.6. H-Board (3 of 3) Schematic Diagram 40
11.7. DG-Board (1 of 7) Schematic Diagram 41
11.8. DG-Board (2 of 7) Schematic Diagram 42
11.9. DG-Board (3 of 7) Schematic Diagram 43
11.10. DG-Board (4 of 7) Schematic Diagram 44
11.11. DG-Board (5 of 7) Schematic Diagram 45
11.12. DG-Board (6 of 7) Schematic Diagram 46
11.13. DG-Board (7 of 7) Schematic Diagram 47
11.14. DV-Board Schematic Diagram 48
11.15. GS-Board Schematic Diagram 49
11.16. GP-Board Schematic Diagram 50
11.17. G-Board and V-Board Schematic Diagram 51
12 Printed Circuit Board 53
12.1. AP-Board 53
12.2. H-Board 55
12.3. DG-Board 58
12.4. DV and GP-Board 61
12.5. GS-Board 62
12.6. G-Board 63
Dimensions ( W × H × D )
Including TV Stand 724 mm × 549 mm × 300 mm (TX-26LX500)
857 mm × 624 mm × 300 mm (TX-32LX500)
TV Set Only 724 mm × 487 mm × 141 mm (TX-26LX500)
857 mm × 563 mm × 141 mm (TX-32LX500)
Weight 20.5 kg Net (TX-26LX500)
22.5 kg Net (TX-32LX500)
Note:
Design and Specifications are subject to change without notice. Weight and Dimensions shown are approximate.
CONTENTS
Page Page
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TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

12.7. K and V-Board 64
13 Exploded View and Replacement Parts List. 65
13.1. Set Layout 65
13.2. Front Chassis Layout 66
13.3. Cabinet Ass’y Layout 67
13.4. Packing 68
13.5. Mechanical Replacement Parts List 69
14 Electrical Replacement Parts List 70
14.1. Electrical Replacement Parts List Notes 70
14.2. Electrical Replacement Parts List 71
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TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

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 between
1MWand 5.2MW.
When the exposed metal does not have a return path to the
chassis, the reading must be .
Figure 1
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 1.5kW, 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.
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.
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TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

2 Prevention of Electro Static 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 electro static 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 alminum
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, alminum 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 hamless 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).
6
TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

3 Applicable signals
Note:
·
· ·
· Signals other than above may not be displayed properly.
·
· ·
· Applicable input signal for PC is basically compatible to VESA standard timing.
·
· ·
· PC signal is magnified or compressed for display, so that it may not be possible to show fine detail with sufficient clarity.
·
· ·
· *: Based on SMPTE295M standard.
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TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

4 Self Check Function
4.1. Self Check
1. Self-Check is used to automatically check the bus lines and hexadecimal code of the TV set.
2. To get into the Self -Check mode press the Down () button on the customer controls at the front of the set, at the same
time pressing the MENU button on the remote control, and the screen will show :
3. Turn off the TV to reset JPEG Viewer mode after SELF-CHECK.
If the CCU ports have been checked and found to be incorrect or not located then “--” will appear in place of “O.K.”.
Display Ref. No. Description P.C.B.
MEM IC1107 Memory DG-Board
GC4P IC4054 Global Core Processor DG-Board
GC4L IC4057 Global Core DG-Board
GC3FS IC4013 Global Core for Sub DG-Board
HAD IC4012 OSD RGB A/D Converter DG-Board
AVSW1 IC3005 AV Switch VIDEO H-Board
AVSW2 IC2105 AV Switch AUDIO H-Board
Tun1 TU3201 Tuner H-Board
DAC1 IC1106 DAC control 1 DG-Board
DAC2 IC1116 DAC control 2 DG-Board
DAC3 IC3006 DAC control 3 H-Board
MSP IC2106 Stereo Decoder H-Board
SDM SD-Module MPEG4/PHOTO view, SD
recording
SD-Module
HDMI IC5003 HDMI I/F Receiver DV-Board
ADV IC4005 A/D Converter DG-Board
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TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

4.2. Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abonormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the
defective block can be identified by the number of blinking of the Power LED on the front panel of the unit.
9
TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

5 Chassis Board Layout
Board Name Function
AP-Board Regulator
DG-Board Global Core, A/D Converter, MCU
H-Board AV connector, TV Tuner, AV Switch
K-Board Power Switch
G-Board Front AV & HP connector, Key Switch
Power Unit
DC Power Supply
None service able.
Power Unit should be exchange for service.
V-Board Remote Receiver, LED
DV-Board HDMI interface
GP-Board PC Card slot, PC Card interface
GS-Board SD Card slot, SD Card Interface
SD Module
MPEG/JPEG interface
None service able.
SD Module should be exchange for service.
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TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

6 Before servicing
6.1. Kind and location of the flexible cable and bridge cable
Ref No. Connecter type Pins Location Opposite Ref No.
G1 - 10pin G-Board V1
G4 - 30pin G-Board H4
G5 - 20pin G-Board H5
G10 - 4pin G-Board speaker box L
G11 - 5pin G-Board speaker box R
GP6 - 3pin GP-Board H6
GP10 Flexible type 50pin GP-Board SD Module
GS3 Flexible type 40pin GS-Board SD Module
GS8 - 7pin GS-Board H8
GS9 - 15pin GS-Board H9
AP1 Bridge Type 23pin AP-Board H1
AP2 - 7pin AP-Board P2 (CN101)
AP3 Bridge Type 11pin AP-Board P3 (CN201)
AP4 Bridge Type 22pin AP-Board DG4
AP5 Bridge Type 22pin AP-Board DG5
AP6 - 3pin AP-Board K6
AP10 - 2pin AP-Board AC cord
DG2 Flexible type 40pin DG-Board H2
DG3 Flexible type 40pin DG-Board H3
DG4 Bridge type 23pin DG-Board AP4
DG5 Bridge type 23pin DG-Board AP5
DG6 - 8pin DG-Board CN3 (Inverter)
DG7 - 32pin DG-Board LCD Panel
DG8 - 7pin DG-Board LCD Panel
DG10 - 60pin DG-Board DV15
DV15 - 60pin DV-Board DG10
H1 Bridge type 23pin H-Board AP1
H2 Flexible type 40pin H-Board DG2
H3 Flexible type 40pin H-Board DG3
H4 - 30pin H-Board G4
H5 - 20pin H-Board G5
H6 - 3pin H-Board GP6
H8 - 7pin H-Board GS8
H9 - 15pin H-Board GS9
K6 - 3pin K-Board AP6
P1 (CN203) - 8pin P-Board CN5 (Inverter)
P2 (CN101) - 7pin P-Board AP2
P3 (CN201) Bridge Type 11pin P-Board AP3
P4 (CN202) - 8pin P-Board CN4 (Inverter)
V1 - 10pin V-Board G1
11
TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

Bridge cable connector Flexible cable connector
6.2. How to remove the connector
12
TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

6.3. Wire dressing 1
1. Make the wire dressing as illustrated below.
13
TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

6.4. Wire dressing 2
<Clamping>
Notes :
1. Connect every connector surely.
2. Manage wires not to touch any sharp edge of the metal parts.
3. Manage wires not to have too much tension.
4. For 32 inch model only.
14
TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

7.1. Removing the stand ass’y
1. Lay down the main unit so that the rear cover faces upward.
2. Remove the cable cover.
3. Remove the fixing screws (4pcs).
4. Remove the stand ass’y.
7.2. Removing the rear cover
1. Remove the stand ass’y. (See 7.1.)
2. Remove the fixing screws (11pcs).
3. Remove the rear cover.
7.3. Removing the speaker box L
and R
1. Remove the rear cover. (See 7.2.)
2. Release the speaker cables from the clampers on the
speaker box L and R, and disconnect the speaker relay
couplers (SPL and SPR).
3. Remove the fixing screws (6pcs).
4. Remove the speaker box L and R.
7 Servicing method
15
TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

7.4. Removing the rear AV bracket
1. Remove the rear cover (See 7.2.) and the speaker box L
and R. (See 7.3.)
2. Release the bushing of AC cord from the rear AV bracket
and the clamper on the rear metal frame, disconnect the
coupler (AP10) and remove the AC cord.
3. Remove the fixing screws (4pcs).
4. Remove the rear AV bracket.
7.5. Removing the rear metal frame
1. Remove the rear AV bracket. (See 7.4.)
2. Release the cables from the clampers on the rear metal
frames.
3. Remove the fixing screws (4pcs).
4. Remove the rear metal frames (right and left).
7.6. Removing the P-Board
1. Remove the rear cover. (See 7.2.)
2. Disconnect the couplers P2 (CN101), P3 (CN201) P4
(CN202), and P1 (CN203).
3. Remove the fixing screw (4pcs).
4. Remove the P-Board.
7.7. Removing the DG-Board
1. Remove the rear AV bracket (See 7.4.) and the rear metal
frame. (See 7.5.)
2. Disconnect the couplers (DG6, DG8 and DG7), the flexible
cables (DG2 and DG3) and the bridge cables (DG4 and
DG5).
3. Remove the fixing screws (7pcs).
4. Remove the DG-Board with DV-Board.
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TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

7.8. Removing the DV-Board
1. Remove the DG-Board with DV-Board. (See 7.7.)
(See above figure in item 7.7.)
2. Remove a fixing screw ( ) (reverse side).
3. Disconnect the coupler (DV15-DG10) and remove the DV-
Board.
7.9. Removing the AP-Board
1. Remove the rear AV bracket ass´y (See 7.4.) and the rear
metal frame. (See 7.5.)
2. Disconnect the couplers (AP2, AP6 and AP10 (AC Cord))
and the bridge cables (H1 (AP1) on the H-Board, P3/CN201
(AP3) on the P-Board and DG4 (AP4) and DG5 (AP5) on
the DG-Board.
3. Remove the fixing screws (7pcs).
4. Remove the AP-Board.
7.10. Removing the H-Board
1. Remove the rear AV bracket (See 7.4.) (and the rear metal
frame). (See 7.5.)
2. Disconnect the flexible cables (H2 and H3), the bridge cable
(H1) and the couplers (H4, H5, H6, H8 and H9).
3. Remove the fixing screws (4pcs).
4. Remove the H-Board.
7.11. Removing G-Board bracket (G-
Board and GP-Board)
1. Remove the rear AV bracket (See 7.4.) and the rear metal
frames. (See 7.5.)
2. Remove the fixing screws (2pcs ) and pull out the rear
AV bracket slightly.
3. Disconnect the flexible cable (GP10) and the couplers (G1,
G4, G5, G10, G11 and GP6).
4. Remove a screw on the DG-Board and release the earth
lug from the DG-Board.
5. Release the cables from the cable holders of the G-Board
bracket.
6. Remove the G-Board bracket with the G-Board and GP-
Board.
17
TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

7.12. Removing the G-Board and
GP-Board
1. Remove the G-Board bracket. (See 7.11.)
<Removing the G-Board>
2. Push the hooks (7 points) to release the G-Board from the
G-Board bracket.
3. Remove the G-Board.
<Removing the GP-Board>
4. Remove the screws (2pcs ) and push the hooks (2
points ).
5. Remove the GP-Board.
7.13. Removing the GS-Board
bracket.
1. Remove the screws (3pcs ) (See figure in item 7.11.)
2. Remove the GS-Board bracket.
3. Remove the couplers (GS9 and GS10) and a flexible cable
(GS3).
4. Remove the screws (2pcs ).
5. Remove the GS-Board
7.14. Removing the K-Board
1. Remove the rear cover (See 7.2.) and the speaker box L.
(See 7.3.)
2. Remove a coupler (K6).
3. Remove the screws (2pcs ).
4. Remove the K-Board bracket with the K-Board.
5. Remove a screw ( ) and remove the K-Board.
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TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

7.15. Removing the V-Board
1. Remove the rear cover (See 7.2.) and the speaker box R.
(See 7.3.)
2. Remove the screws (2pcs).
3. Remove the V-Board.
4. Disconnect the coupler (V1).
7.16. Removing the main chassis
1. Remove the rear AV bracket (See 7.4.) and the rear metal
frame. (See 7.5.)
2. Disconnect the couplers (CN202, CN203, DG6, DG7, DG8,
H4, H5, H6, H8, H9, AP6, AP10) and the earth lug (on the
H-Board) from G-Board.
3. Release the cables from the clampers on the main chassis.
4. Remove the fixing screws (3pcs).
5. Remove the main chassis with the P-Board, the AP-Board,
the DG-Board (with DV-Board) and the H-Board.
7.17. Removing the LCD panel
1. Remove the main chassis. (See 7.16.)
2. Remove the fixing screws (11pcs ).
3. Remove the LCD panel and LCD panel holders (right and
left).
4. Remove the screw (4pcs ).
5. Remove the LCD panel holders (top and bottom).
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TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X

8 Service Mode Function
MPU controls the functions switching for each IICs through IIC bus in this chassis. The following setting and adjustment can be
adjusted by remote control in Service Mode.
8.1. How to enter SERVICE 1
1. In main menu, move to choose sound menu, set BASS to MAXIMUM, and set TREBLE to MINIMUM.
2. Simultaneously press INDEX button on remote control and DOWN button [ ] on the TV set.
8.2. How to enter SERVICE 2
1. Enter the SERVICE 1 mode and press RED button into the end of SERVICE 1 mode.
2. Select the SD Auto Check.
3. Set the channel to CH99.
4. Press HOLD button on remote control.
Note:
To exit from Service mode, press N or Power button on remote control.
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TX-32LX500M / TX-32LX500A / TX-32LX500X / TX-26LX500M / TX-26LX500A / TX-26LX500X