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ORDER NO.MTNC090213CE
B05 Canada: B07
32 inch/37 inch Class 1080p LCD HDTV
Model No. TC-L37S1
TC-L32S1
LH91 Chassis
© Panasonic Corporation 2009.
Unauthorized copying and distribution is a violation
of law.
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 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.
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 1.1.2. Leakage Current Hot Check (See
1. Unplug the AC cord and connect a jumper between the Figure 1.)
two prongs on the plug. 1. Plug the AC cord directly into the AC outlet. Do not use
2. Measure the resistance value, with an ohmmeter, an isolation transformer for this check.
between the jumpered AC plug and each exposed metal- 2. Connect a 1.5kohm, 10 watts resistor, in parallel with a
lic cabinet part on the equipment such as screwheads, 0.15F capacitors, between each exposed metallic part
connectors, control shafts, etc. When the exposed metal- on the set and a good earth ground such as a water pipe,
lic part has a return path to the chassis, the reading as shown in Figure 1.
should be 100 Mohm and over. 3. Use an AC voltmeter, with 1000 ohms/volt or more sensi-
When the exposed metal does not have a return path to tivity, to measure the potential across the resistor.
the chassis, the reading must be . 4. Check each exposed metallic part, and measure the volt-
age 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 mea-
surement is outside of the limits specified, there is a pos-
sibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the cus-
tomer.
Figure 1
2
2 Warning
2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi-
tive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec-
trostatically 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 alumi-
num 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 compara-
ble 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 brush-
ing 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).
3
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 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. How-
ever, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.
4
3 Service Navigation
3.1. Service Hint
Board Name Function
A-Board Rear Terminal, AV Switch, MCU, Audio & Video
Processor, LVDS, Tuner
V-Board Remote Receiver, LED
P-Board Power (AC/DC), DC-DC
None serviceable
P-Board should be exchanged for service.
Control Panel Assy Control Button, Power switch
None serviceable
Control Panel Assy should be exchanged for service.
3.2. Applicable signals
Input signal that can be displayed
* Mark: Applicable input signal for Component (Y, PB, PR), HDMI and PC
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 * *
1,125 (1,080) /60p 67.43 59.94 *
1,125 (1,080) /60 67.50 60.00 *
1,125 (1,080) /24p 26.97 23.98 *
1,125 (1,080) /24p 27.00 24.00 *
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.
5
4 Specifications
Power Source AC 110-127 V, 60 Hz
Power Consumption
Maximum 123 W (TC-L32S1)
151 W (TC-L37S1)
Standby Condition 0.2 W (TC-L32S1)
0.2 W (TC-L37S1)
Display panel
Aspect Ratio 16:9
Visible screen size 32 inch class (31.5 inches measured diagonally) (TC-L32S1)
37 inch class (37.0 inches measured diagonally) (TC-L37S1)
(W × H × Diagonal) 27.5 inch × 15.4 inch × 31.5 inch (698 mm × 392 mm × 801 mm) (TC-L32S1)
32.2 inch × 18.1 inch × 37.0 inch (819 mm × 460 mm × 940 mm) (TC-L37S1)
(No. of pixels) 2,073,600 (1,920 (W) × 1,080(H)) [5,760 × 1,080 dots]
Sound
Speaker 1-way 2 speakers slim under SP System
Audio Output 20 W [10 W + 10 W] ( 10 % THD )
Headphones M3 (3.5 mm) Jack × 1
PC signals VGA, SVGA, XGA, WXGA, SXGA
Horizontal scanning frequency 31 - 69 kHz
Vertical scanning frequency 59 - 86 Hz
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
VIDEO IN 1 VIDEO: RCA PIN Type × 1 1.0 V [p-p] (75 )
AUDIO L - R: RCA PIN Type × 2 0.5 V [rms]
VIDEO IN 2 VIDEO: RCA PIN Type × 1 1.0 V[p-p] (75 )
S VIDEO: Mini DIN 4-pin Y: 1.0 V[p-p] (75 ) C: 0.286 V [p-p] (75 )
AUDIO L - R: RCA PIN Type × 2 0.5 V [rms]
COMPONENT IN 1 Y: 1.0 V [p-p] (including synchronization)
PB, PR: ±0.35 V [p-p]
AUDIO L-R: RCA PIN Type × 2 0.5 V [rms]
HDMI 1-3 TYPE A Connector × 3 .
! This TV supports [HDAVI Control 4] function.
PC D-SUB 15PIN: R,G,B / 0.7 V [p-p] (75 )
HD, VD / 1.0 - 5.0 V [p-p] (high impedance)
Card slot SD CARD slot × 1
DIGITAL AUDIO OUT PCM / Dolby Digital, Fiber Optic
FEATURES 3D Y/C Digital Comb Filter, CLOSED CAPTION, V-Chip
HDMI (HDAVI Control 4)
Vesa compatible, Photo viewer
Dimensions (W × H × D)
Including TV stand 31.5 inch × 21.7 inch × 8.6 inch (798 mm × 551 mm × 217 mm) (TC-L32S1)
36.1 inch × 24.5 inch × 11.3 inch (915 mm × 620 mm × 287 mm) (TC-L37S1)
TV Set only 31.5 inch × 20.2 inch × 3.7 inch (798 mm × 511 mm × 93 mm) (TC-L32S1)
36.1 inch × 22.8 inch × 3.9 inch (915 mm × 577 mm × 97 mm) (TC-L37S1)
Mass
Including TV stand 29.3 lb. (13.3 kg) NET (TC-L32S1)
37.0 lb. (16.8 kg) NET (TC-L37S1)
TV Set only 25.6 lb. (11.6 ) NET (TC-L32S1)
32.0 lb. (14.5 ) NET (TC-L37S1)
Note
Design and Specifications are subject to change without notice. Mass and Dimensions shown are approximate.
6
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. Key command
[1] button...Main items Selection in forward direction
[2] button...Main items Selection in reverse direction
[3] button...Sub items Selection in forward direction
[4] button...Sub items Selection in reverse direction
[VOL] button...Value of sub items change in forward direction ( + ), in reverse direction ( - )
5.1.2. Contents of adjustment mode
· 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.
Main item Sub item Sample Data Remark
ADJUST CONTRAST 000
COLOR 4C
TINT 00
SUB-BRT 808
BACKLGT 4CB
B-Y-G 34
R-Y-A 00
WB-ADJ R-GAIN F2
G-GAIN FC
B-GAIN E6
R-CENT 84
G-CENT 80
B-CENT 7A
OPTION Boot ROM Factory Preset.
STBY-SET 00
EMERGENCY ON
CLK MODE 00
CLOCK FCA
RM-SET CODE 00 Fixed.
SRV-TOOL 00 See next.
5.1.3. How to exit
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
7
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 ship-
ment 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.
8
5.3. Hotel mode
1. Purpose
Restrict a function for hotels. item Function
2. Access command to the Hotel mode setup menu Mode Select hotel mode off/on
In order to display the Hotel mode setup menu, please Input Select input signal modes.
enter the following command (within 2 second). Set the input, when each time power is
[TV] : Vol. [Down] + [REMOTE] : INPUT (3 times) switched on.
Selection:
-/RF/Component/HDMI1/HDMI2/HDMI3/
Then, the Hotel mode setup menu is displayed. Video1/Video2/PC
· Off: give priority to a last memory.
Channel Select channel when input signal is RF.
Set the channel, each time power is switched
on.
Selection:
Any channel number or [-].
[-] means the channel when turns off.
Volume Adjust the volume when each time power is
switched on.
Range:
0 to 100
Vol. Max Adjust maximum volume.
Range:
0 to 100
OSD Ctrl Restrict the OSD.
Selection:
Off/Pattern1
· OFF: No restriction
· Pattern1: restriction
FP Ctrl Select front key conditions.
Selection:
Off/Pattern1/All
· Off: altogether valid.
· Pattern1: only input key is valid.
· All: altogether invalid.
Pow Ctrl Select POWER-ON/OFF condition when AC
power cord is disconnected and then con-
nected.
3. To exit the Hotel mode setup menu OFF: The same condition when AC power
Disconnect AC power cord from wall outlet. cord is disconnected.
4. Explain the Hotel mode setup menu ON: Forced power ON condition.
9
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.
10
6.2. Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality 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 blinks of the Power LED on the front panel of the unit.
11
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.)
12
7 Disassembly and Assembly Instructions
7.1. Pedestal assy 7.3. AC cord
1. Lay down the unit so that the rear cover faces upward. 1. Remove the bushing of the AC cord from the AC cord
2. Remove the 4 screws. cover.
3. Remove the pedestal assy. 2. Disconnect the connector (P1) of AC cord.
3. Remove the 1 screw and AC cord cover.
7.2. Rear cover
1. Remove the 15 screws (A).
2. Remove the 2 screws (B).
3. Remove the rear cover.
7.4. P-Board
1. Remove the 5 screws.
2. Disconnect the connectors (P1/P2/P4/P5/P6).
3. Remove the P-Board.
13
7.5. Side AV bracket 7.7. Control panel assy
1. Remove the screw (C). 1. Disconnect the connector (K1).
2. Remove the screw (D). 2. Remove the 2 screws.
3. Remove the side AV bracket. 3. Remove the control panel.
7.6. A-Board
1. Remove the 7 screws.
2. Disconnect the connector (A02/A03/A10/A11/A15/A20).
3. Remove the A-Board.
7.8. Speaker
1. Remove the 4 screws.
2. Remove the Speaker.
14
7.9. A-P-MTG Metal 7.11. LCD MTG
1. Remove the 6 screws. 1. Remove the 4 screws (G).
2. Remove the A-P-MTG Metal. 2. Remove the 4 screws (H).
3. Remove the LCD BTM MTG and LCD bottom corner
BTG.
7.12. LCD Panel
1. Remove the 4 screws.
2. Remove the LCD panel and LCD side MTG.
7.10. VESA metal
1. Remove the 4 screws (A).
2. Remove the 4 screws (B).
3. Remove the VESA metal.
15
7.13. V-Board
1. Remove the 1 screw.
2. Disconnect the connector (V10).
3. Remove the V-Board.
16
7.14. EMI processing (37 inch)
17
18
19
20
7.15. EMI processing (32 inch)
21
22
23
8 Measurements and Adjustments
8.1. Voltage chart of P-board
VOLTAGE TEST POINT SPECIFICATION
(Reception state)
5.136 TP2831 5.2 ± 0.26 V
3.305 TP5480 3.3 ± 0.16 V
1.261 TP5602 1.26 ± 0.06 V
1.835 TP5601 1.83 ± 0.09 V
3.309 TP5600 3.3 ± 0.16 V
4.775 TP5405 5 ± 0.25 V
9.097 TP5481 9 ± 0.45 V
30.94 TP8300 30 ± 1.5 V
17.33 TP5431 17 ± 0.85 V
17.33 TP5417 17 ± 0.85 V
11.97 TP5432 12 ± 0.6 V
11.95 TP5413 12 ± 0.6 V
5.709 TP5433 5.6 ± 0.28 V
5.706 TP5439 5.6 ± 0.28 V
8.2. Voltage chart of A-board
VOLTAGE TEST POINT SPECIFICATION
(Reception state)
STB5V TP2831 5.2 ± 0.26 V
STB3.3V TP5480 3.3 ± 0.16 V
SUB1.2V TP5602 1.26 ± 0.06 V
SUB1.8V TP5601 1.83 ± 0.09 V
SUB3.3V TP5600 3.3 ± 0.16 V
SUB5V TP5405 5 ± 0.25 V
SUB9V TP5481 9 ± 0.45 V
BT30V TP8300 30 ± 1.5 V
P17V TP5431 17 ± 0.85 V
SOUNDVCC TP5417 17 ± 0.85 V
DTV12V TP5432 12 ± 0.6 V
PANEL12V TP5413 12 ± 0.6 V
5VS TP5433 5.6 ± 0.28 V
TUNER6V TP5439 5.6 ± 0.28 V
24
8.3. Picture level adjustment (RF)
Instrument Name Remarks
1. REMOTE TRANSMITTER
2. Ex. Signal (Split color bar)
Adjustment or Inspection Procedure Remarks
1. Receive the split color bar.
(Screen mode: ZOOM or FULL Picture mode: DYNAMIC AI: OFF AI Picture: OFF)
*BACK LIGHT +30
1. Enter Service mode, and select MAIN_ADJ PICTURE.
Volume UP/DOWN key makes GAIN displayed under PICTURE to set.
Pushing the remote controller [OK] key for about 3 seconds, GAIN is suited
to the adjustment value automatically.
8.4. Picture level adjustment (VIDEO)
Instrument Name Remarks
1. REMOTE TRANSMITTER
2. Video signal generator (100% Color bar)
Adjustment or Inspection Procedure Remarks
1. Receive 100% color bar.
(ASPECT: ZOOM or FULL , Picture mode: VIVID , AI Picture: OFF)
*BACK LIGHT MAX VALUE
1. Enter Factory adjustment mode, and select ADJUST CONTRAST.
Volume UP/DOWN key makes GAIN value displayed on the right of CONTRAST to set.
Pushing the remote controller [OK] key for about 3 seconds, GAIN is suited to the adjustment value auto-
matically.
8.5. Picture level adjustment (YUV)
Instrument Name Remarks
1. REMOTE TRANSMITTER
2. Component Video signal generator (100% Color bar 1080i)
Adjustment or Inspection Procedure Remarks
1. Receive 100% color bar.
(ASPECT: ZOOM or FULL , Picture mode: VIVID , AI Picture: OFF)
*BACK LIGHT MAX VALUE
1. Enter Factory adjustment mode, and select ADJUST CONTRAST.
Volume UP/DOWN key makes GAIN value displayed on the right of CONTRAST to set.
Pushing the remote controller [OK] key for about 3 seconds, GAIN is suited to the adjustment value auto-
matically.
25
26
9 Block Diagram
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