Panasonic Viera TC-32LX700 User manual

©2006 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
TC-32LX700
LH65 Chassis
32 “DIAGONAL LCD TV
Specifications
Power Source
A
C 110-127 V, 60 Hz
Power Consumption
Average use 138 W
Maximum Current 1.5 A
Standby condition 0.1W
Aspect Ratio 16 : 9
Visible screen size
(W × H × Diagonal)
(No. of pixels)
31.5” DIAGONAL (80.0 cm DIAGONAL)
27.5” × 15.4” × 31.5” (698 mm × 392 mm × 800 mm)
1,049,088 (1,366 (W) × 768(H)) [4,098 × 768 dots]
Sound
Speaker 2 way 4 speakers
Audio Output 20 W [ (7.5 W + 2.5 W) × 2] ( 10 % THD )
Headphones M3 (3.5mm) Jack × 1
Channel Capability - VHF/UHF: 2 - 69, CATV: 1 - 135
ATSC/NTSC(Digital/Analog)
Operating Conditions Temperature: 32 °F - 95 °F (0 °C - 35 °C)
Humidity : 20 % - 80 % RH (non-condensing)
Connection Terminals
INPUT 1-2 VIDEO: RCA PIN Type × 1 1.0 V [p-p] (75 ohm)
S-VIDEO: Mini DIN 4-pin Y: 1.0 V [p-p] (75 ohm) C: 0.286 V [p-p] (75 ohm)
A
UDIO L-R: RCA PIN Type × 2 0.5 V [rms]
INPUT 3 VIDEO: RCA PIN Type × 1 1.0 V [p-p] (75 ohm)
A
UDIO L-R: RCA PIN Type × 2 0.5 V [rms]
COMPONENT VIDEO
INPUT
Y: 1.0 V [p-p] (including synchronization)
PB,P
R: ± 0.35 V [p-p]
A
UDIO L-R: RCA PIN Type × 2 0.5 V [rms]
HDMI 1-2 AUDIO IN TYPE A Connector × 2
A
UDIO L-R: RCA PIN Type × 2 0.5 V [rms]
ORDER NO.MTNC060802CE
B05 Canada: B07

1 Applicable signals 4
2 Safety Precautions 5
2.1. General Guidelines 5
3 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 6
4 About lead free solder (PbF) 7
5 Chassis Board Layout 8
6 Disassembly for Servise 9
6.1. Pedestal assｴy 9
6.2. Rear cover 9
6.3. VESA metal 9
6.4. AC cord 9
6.5. Tuner cover 10
6.6. Power button bracket 10
6.7. Control panel assｴy 10
6.8. G-Board and GS-Board 10
6.9. Side AV bracket 11
6.10. AP-Board 11
6.11. P-Board 11
6.12. DT-Board 11
6.13. A-Board and DT-Board metal 12
6.14. Chassis 12
6.15. LCD MTG (bottom) 12
6.16. Speaker assｴy 13
6.17. Squawker speaker 13
6.18. V-Board 13
6.19. LCD panel 14
7 Caution statement 15
7.1. Caution statement. 15
8 Location of Lead Wiring 16
8.1. Lead of Wiring (1) 16
8.2. Lead of Wiring (2) 17
9 EMI Processing 18
9.1. EMI (1) 18
9.2. EMI (2) 19
10 Self-check Function 20
10.1. Check of the IIC bus lines 20
10.2. Power LED Blinking timing chart 21
10.3. No Power 22
11 Serviceman Mode 23
11.1. How to enter into Serviceman Mode 23
11.2. Contents of adjustment mode 23
11.3. SRV-TOOL 24
12 Adjustment 25
12.1. Voltage chart of AP-board 25
12.2. Voltage chart of P-board 25
12.3. Voltage chart of A-board 25
12.4. Picture level adjyustment (RF) 25
13 Hotel mode 26
14 Conductor Views 27
14.1. P-Board 27
14.2. AP-Board 28
14.3. A-Board 30
14.4. DT-Board 33
14.5. G, GS and V-Board 34
15 Schematic and Block Diagram 35
15.1. Schematic Diagram Notes 35
15.2. Block Diagram (1 of 2) 36
15.3. Block Diagram (2 of 2) 37
15.4. Interconnection Schematic Diagram 38
15.5. G, GS, P and V-Board Schematic Diagram 39
15.6. AP-Board (1 of 2) Schematic Diagram 40
15.7. AP-Board (2 of 2) Schematic Diagram 41
15.8. A-Board (1 of 13) Schematic Diagram 42
Card slot SD CARD slot × 1
OUTPUT VIDEO: RCA PIN Type × 1 1.0 V [p-p] (75 ohm)
A
UDIO L-R: RCA PIN Type × 2 0.5 V [rms]
DIGITAL AUDIO OUT PCM/Dolby Digital, Fiber Optic
FEATURES 3D Y/C Digital Comb Filter, CLOSED CAPTION, V-Chip
HDMI (HDAVI Control 2)
Vesa compatible Photo Viewer
Dimensions (W × H × D)
Including TV stand 32.9 ” × 23.3 ” × 9.8 ” (836 mm × 592 mm × 248 mm)
TV Set only 32.9 ” × 21.3 ” × 4.2 ” (836 mm × 540 mm × 106.8 mm)
Weight 40.0 lb. (18.0kg) NET
Note:
Design and Specifications are subject change without notice. Weight and Dimensions shown are approximate.
CONTENTS
Page Page
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TC-32LX700

15.9. A-Board (2 of 13) Schematic Diagram 43
15.10. A-Board (3 of 13) Schematic Diagram 44
15.11. A-Board (4 of 13) Schematic Diagram 45
15.12. A-Board (5 of 13) Schematic Diagram 46
15.13. A-Board (6 of 13) Schematic Diagram 47
15.14. A-Board (7 of 13) Schematic Diagram 48
15.15. A-Board (8 of 13) Schematic Diagram 49
15.16. A-Board (9 of 13) Schematic Diagram 50
15.17. A-Board (10 of 13) Schematic Diagram 51
15.18. A-Board (11 of 13) Schematic Diagram 52
15.19. A-Board (12 of 13) Schematic Diagram 53
15.20. A-Board (13 of 13) Schematic Diagram 54
15.21. DT-Board Schematic Diagram 55
16 Parts Location & Mechanical Replacement Parts List 57
16.1. Parts Location 57
16.2. Mechanical Replacement Parts List 58
17 Electrical Replacement Parts List 59
17.1. Replacement Parts List Notes 59
17.2. Electrical Replacement Parts List 60
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TC-32LX700

1 Applicable signals
* Mark: Applicable input signal for Component (Y, PB,P
R) and HDMI
horizontal frequency (kHz) vertical frequency (kHz) COMPONENT HDMI
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 * *
1,125 (1,080)/60p 67.43 59.94 *
1,125 (1,080)/60p 67.50 60.00 *
Note:
· Signals other than those shown above may not be displayed properly.
· The above signals are reformatted for optimal viewing on your display.
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TC-32LX700

2.1.1. 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
1Mohm and 5.2Mohm.
When the exposed metal does not have a return path to
the chassis, the reading must be .
Figure 1
2.1.2. 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.
2 Safety Precautions
2.1. 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.
5
TC-32LX700

3 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
TC-32LX700

4 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.
7
TC-32LX700

5 Chassis Board Layout
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TC-32LX700

6.1. Pedestal ass´y
1. Lay down the unit so that the rear cover faces upward.
2. Remove the 4 screws.
3. Remove the pedestal ass´y.
6.2. Rear cover
1. Remove the 18 screws.
2. Remove the rear cover.
6.3. VESA metal
1. Remove the 4 screws.
2. Remove the VESA metal.
6.4. AC cord
1. Take out the groove of the AC cord from the slot of the
tuner cover.
2. Disconnect the connecter (P1) of AC cord.
6 Disassembly for Servise
9
TC-32LX700

6.5. Tuner cover
1. Remove the 2 screws.
2. Remove the tuner cover.
6.6. Power button bracket
1. Remove the 2 screws.
2. Remove the power button bracket.
6.7. Control panel ass´y
1. Disconnect the connecter (AP6).
2. Remove the 2 screws.
3. Remove the control panel ass´y.
6.8. G-Board and GS-Board
1. Remove the screw.
2. Disconnect the connecter (GS8)
3. Remove the GS-Board
4. Remove the 2 screws.
5. Disconnect the connecter (G4).
6. Remove the G-Board.
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TC-32LX700

6.9. Side AV bracket
1. Remove the 2 screws (A).
2. Remove the screw (B).
3. Remove the side AV bracket.
6.10. AP-Board
1. Remove the 3 screws.
2. Disconnect the connecters (A3/A4/CN3).
3. Remove the AP-Board.
6.11. P-Board
1. Remove the 6 screws.
2. Disconnect the connecters (P3/P5/P6).
3. Remove the P-Board.
6.12. DT-Board
1. Remove the 4 screws.
2. Remove the DT-Board.
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TC-32LX700

6.13. A-Board and DT-Board metal
1. Remove the 10 screws.
2. Disconnect the connecter (A2/A5/A6/A9).
3. Remove the 2 screws.
4. Remove the A-Board and DT-Board metal.
6.14. Chassis
1. Remove the 2 screws (C).
2. Remove the 2 screws (D).
3. Remove the 2 screws (E).
4. Remove the chassis.
6.15. LCD MTG (bottom)
1. Remove the 4 screws (F).
2. Remove the 6 screws (G)
3. Remove the LCD MTG (bottom).
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TC-32LX700

6.16. Speaker ass´y
1. Remove the 4 screws.
2. Remove the speaker ass´y.
6.17. Squawker speaker
1. Remove the 4 screws.
2. Remove the squawker speaker.
6.18. V-Board
1. Remove the 2 screws.
2. Remove the V-Board.
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TC-32LX700

6.19. LCD panel
1. Remove the 2 screws.
2. Remove the LCD L/R MTG (A).
3. Remove the 2 screws.
4. Remove the LCD L/R MTG (B).
5. Remove the LCD panel.
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TC-32LX700

7 Caution statement
7.1. Caution statement.
Caution:
Please confirm that all flexible cables are assembled correctly.
Also make sure that they are locked in the connectors.
Verify by giving the flexible cables a very slight pull.
15
TC-32LX700

8 Location of Lead Wiring
8.1. Lead of Wiring (1)
16
TC-32LX700

8.2. Lead of Wiring (2)
17
TC-32LX700

9 EMI Processing
9.1. EMI (1)
18
TC-32LX700

9.2. EMI (2)
19
TC-32LX700

Use the self-check function to test the unit.
10 Self-check Function
1. Checking the IIC bus lines
2. Power LED Blinking timing
10.1. Check of the IIC bus lines
10.1.1. How to access
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.
10.1.2. Exit
Disconnect the AC cord from wall outlet.
10.1.3. Screen display
10.1.4. Check Point
Confirm the following parts if NG was displayed.
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TC-32LX700