Panasonic TC-L32B6 Schematic
ORDER NO.MTNC130213CE
B01 Canada: B61
LCD TV
Model No. TC-L32B6
TC-L32B6P
©Panasonic Corporation 2013.
Unauthorized copying and distribution is a
violation of law.
CONTENTS
1. Safety precautions .................................................................................................
2. Alignment instructions and method of software upgrading.....................................
3. Working principle analysis of the unit ...................................................................
4. Specifications.......................................................................................................13
5. Block diagram ......................................................................................................14
6. Boards Layout......................................................................................................17
7. Wiring diagram ...................................................................................................18
8. Troubleshooting guide..........................................................................................22
9. Exploded View .....................................................................................................26
10. Replacement Parts List......................................................................................28
11. Disassembly and Assembly Instructions............................................................29
3
5
12
2
Attention:
please read the following points carefully.
Safety precautions
This service manual is only for service personnel to take reference with. Before
servicing
1. Instructions
Be sure to switch off the power supply before replacing or welding any components or
inserting/plugging in connection wire Anti static measures to be taken (throughout the entire production
process!):
a) Do not touch here and there by hand at will;
b) Be sure to use anti static electric iron;
c) It’s a must for the welder to wear anti static gloves.
Please refer to the detailed list before replacing components that have special safety requirements.
Do not change the specs and type at will.
2. Points for attention in servicing of LED
2.1 Screens are different from one model to another and therefore not interchangeable. Be sure to
Use the screen of the original model for replacement.
2.2 The operation voltage of LED screen is
protecting yourself and the machine when testing the system in the course of normal operation or
right after the power is switched off. Please do not touch the circuit or the metal part of the module
high voltage. Be
sure to take proper measures in
That is in operation mode. Relevant operation is possible only one minute after the power is switched
off.
2.3 Do not use any adapter that is not identical with the TV set. Otherwise it will cause fire or damage
to the set.
2.4 Never operate the set or do any installation work in bad environment such as wet bathroom,
laundry, kitchen, or nearby fire source, heating equipment and devices or exposure to sunlight etc.
Otherwise bad effect will result.
2.5 If any foreign substance such as water, liquid, metal slices or other matters happens to fall into the
module, be sure to cut the power off immediately and do not move anything on the module lest it should
cause fire or electric shock due to contact with the high voltage or short circuit.
2.6 Should there be smoke, abnormal smell or sound from the module, please shut the power off at
once. Likewise, if the screen is not working after the power is on or in the course of operation, the
power must be cut off immediately and no more operation is allowed under the same condition.
2.7 Do not pull out or plug in the connection wire when the module is in operation or just after the
power is off because in this case relatively high voltage still remains in the capacitor of the driving
circuit. Please wait at least one minute before the pulling out or plugging in the connection wire.
2.8 When operating or installing LED please don’t subject the LED components to bending, twisting or
extrusion, collision lest mishap should result.
2.9 As most of the circuitry in LED TV set is composed of CMOS integrated circuits, it’s necessary to
pay attention to anti statics. Before servicing LED TV make sure to take anti static measure and
ensure full grounding for all the parts that have to be grounded.
2.10 There are lots of connection wires between parts behind the LED screen. When servicing or
moving the set please take care not to touch or scratch them. Once they are damaged the screen
would be unable to work and no way to get it repaired.
If the connection wires, connections or components fixed by the thermo tropic glue need to disengage
when service, please soak the thermo tropic glue into the alcohol and then pull them out in case of
damage.
3
2.11 Special care must be taken in transporting or handling it. Exquisite shock vibration may lead to
breakage
before
2.12 For the storage make sure to put it in a place where the environment can be controlled so as to
prevent
prolonged
place.
of
screen glass or damage to driving circuit. Therefore it must be packed in a strong case
the transportation or handling.
the temperature and humidity from exceeding the limits as specified in the manual. For
storage, it is necessary to house it in an anti-moisture bag and put them altogether in one
The ambient conditions are tabulated as follows:
Temperature
Scope for operation
0
~ + 35
oC
Humidity
2.13
Display of a fixed picture for a long time may result in appearance of picture residue on the
as
screen,
of LED screen. This phenomenon doesn’t represent failure. This “ghost shadow” may remain
in the picture for a period of time (several minutes). But when operating it please avoid displaying still
picture in high brightness for a long time.
commonly called “ghost shadow”. The extent of the residual picture varies with the maker
Scope for storage
Scope for operation
Scope for storage
-20 ~
+ 60oC
20% ~
10% ~ 90%
80
%
3. Points for attention during installation
3.1 The front panel of LED screen is of glass. When installing it please make sure to put it in place.
3.2 For service or installation it’s necessary to use specified screw lest it should damage the screen.
3.3 Be sure to take anti dust measures. Any foreign substance that happens to fall down between the
screen and the glass will affect the receiving and viewing effect
3.4 When dismantling or mounting the protective partition plate that is used for anti vibration and
insulation
3.5 Be sure to protect the cabinet from damage or scratch during service, dismantling or mounting.
please take care to keep it in intactness so as to avoid hidden trouble.
4
2. Alignment instructions
(1) Test equipment
VG-859 (YPbPr, VGA, HDMI signal generator)
FLUKE 54200(TV signal generator)
CA310 (white balancer)
(2) Power test
Connect main board, power board and IR board according the wiring diagram, connect
the power and press power key (Remote controller or Keypad) button to turn on the TV.
a) Test the pin voltage of P802/power board , the data is shown in table1:
Table1 voltage data of P802
For 32”
P802 Pin1,2 Pin3,4 Pin5,6,7
Voltage GND 11.4V~12.6V GND 11.4V~12.6V 4.75V~5.25V
For 32”
Pin12 Pin13 Pin 14 Pin15 Pin16
On:2.5V~5.25V
Off: 0~0.5V
Normal: 2.0~5V
Abnormal :0~0.5V
On:2.5V~5.25V
Off: 0~0.5V
Pin8,9 Pin10,11
Duty 5%~100% NC
5
(3) Alignment flow-chart
The alignment flow-chart is shown as fig-1
Connect to the center signal source and check each
Funct
Check the output of speaker.
Check if EDID, HDCP KEY, FLASH are written
Combined test for general assembly
Auto Gamma adjustment
ion of TV (station leaking, analog control, etc.)
Input AV signal and check the function
Input HD signal and check the function of YPbPr
Input USB signal and check if the display is normal, check
the fu
nction (analog control), horizontal/vertical center, etc.
Input HDMI signal and check if the display is normal, check
the function (analog control), horizontal/vertical center, etc.
Checking SPDIF will output the signal on Amplifier.
Preset ex-factory
Check the accessories and packing
Fig-1 adjustment flow-chart
6
(4) Adjustment instruction
At any input source then press the “←”, “EXIT” and “OK” (using RC within 1 sec) to enter factory mode
During Factory menu, if “EXIT” key is pushed, system will exit factory mode.
4-1. Auto Gamma Adjustment & Check
4-2.1. Set into factory mode then choose Auto Gamma Adjust,
4-2.2. Press "2" "3" "2" "4" in turn within 1sec to enter the item, and push Init will self-generate gray pattern
for adjusting.
4-2.3. Following the Cool spec as bellow.
Color Cool
x
100IRE 0.2677
50IRE 0.2684
y
Adjust
Tolerance
100IRE 0.2655
50IRE 0.2671
±0.005
(1) Adjust 100IRE
First, Decrease G to meet y spec(0.2655).
Second, Decrease R to meet x spec(0.2677).
(2) Adjust 50IRE
First, Decrease G to meet y spec(0.2671).
Second, Decrease R to meet x spec(0.2684).
Note: Do not adjust the B GAIN on both 100IRE and 50IRE.
When match the spec, pressing “Save” then exit the adjustment page.
(5) When match the spec, pressing right key in "Save" position then exit the adjustment page.
4-2.4. Exit Factory Mode:
After finish Gamma adjust press [EXIT] to exit factory mode.
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(5) Items of Factory menu
When in any source, press the “Left -> Exit -> Enter” key of remote control can enter into factory mode.
During Factory menu, only “EXIT” key is pushed, system will exit factory mode.
Press up and down key can move high light item from Model Change -> Color Temp. Adjust -> Auto Gamma
Adjust -> Timer Clear -> Preset Channel -> Full Power -> ADC Calibration -> Shipping reset -> Bypass Gamma ->
UART Enable -> I2C -> Boot Loader Upgrade -> V-Com Adjust -> SG Pattern.
Push “Enter” key can enter high light item function. (Press left and right can adjust value)
Display Model version, Release Date, firmware version and released date on the bottom.
1)Model ID
Press
up or down key can select high light item function
Press enter or right key to enter the item.
It's only used for FW engineer.
2)Color Temp. Adjust
Press up or down key can select high light item function
Press enter or right key to enter the item.
It's only used for PQ engineer.
3)Auto Gamma Adjust
Press up or down key can select high light item function
Press enter or right key to enter the item.
It's only used for PQ engineer.
4)Timer Clear
Reset the timer which records hours of LED panel burn in
This item will have a check dialog “yes or no” to do or not.
- Time in factory mode: Time function shall be displayed automatically. Saving the total time of system
power on (LED turn on), and count the time automatically. The timer is continuous and saved (per 10
minutes) forever, unless it will be reset by doing “Timer Clear”.
5)P
6)Full Power
reset channel
Load p
This is for power consumption testing.
To measure the maximum power consumption of TV set, we adjust the value of following items to
maximum.
- Video: Contrast maximum value, Brightness maximum value, Backlight maximum value.
- Audio: Volume maximum value, Bass default value, Treble default value.
Press enter key to turn on Full Power and OSD stay display until press enter key to recover from Full
Power.
reset channel for production line.
8
7)ADC Calibration
LINE (pixel)
LINE (pixel)
LINE (pixel)
3 15
62 60
6 30
40
5 20
44
5 15
44
5 36
ADC Calibration function is reserved for calibration by hand (PQ engineer only).
8)Shipping reset
Reset all settings of OSD menu to default value.
Reset settings: Channel table, Model table (H/V Position, Clock, Phase), Source dependent setting
(Contrast, Brightness etc.), Common setting (Volume, Language etc.), Parental Control (Rating,
Password etc), Closed Caption.
9)Bypass Gamma
For factory test value of gamma.
10)UART Enable
Enable to communicate with Auto-Alignment system.
11)I2C
Enable to communicate with Eeprom burn-in tool.
12)Boot Loader Upgrade
For firmware downgrade used.
13)V-Com Adjust
It's reserved for BMS function.
14)SG Pattern
Aging is for factory burn in and PTN ID provides each pattern for tester using.
(6) Pe
6-1 TV function
Connect RF to the center signal source, enter Channel menu → auto tuning, check if there are channels be
skipped, check if the picture and speaker are normal.
6-2 AV terminals
Input Video signal, check if the picture and sound are normal.
6-3 YPbPr terminal
Input YUV signal (VG859 signal generator), separately input the YUV signals listed in table4 and check if the
display and sound are normal at any situation (power on, channel switch and format convert, etc.)
rformance check
FREQ PERIOD
Table4 YUV signal format
SYNC
POLARITY
CLOCK
PIXEL
Display
SYNC
WIDTH
BACK
PORCH
MODE
15.734
59.94Hz 720x480i
59.94Hz 720x480P
60Hz 1280x720P
60Hz 1920X1080i
60Hz 1920X1080P
LINE(kHz)
FRAME
(Hz)
59.94
31,469
59.94
45
60
33.75
60
67.5
60
LINE (pixel)
FIELD
(lines)
1716
525
858
525
1650
750
2200
1125
2200
1125
LINE
FIELD
Negitive 27
Negitive 480
Negitive 27
Negitive 480
Positive 74.25
Positive 720
Positive 74.25
Positive 1080
Positive 148.5
Positive 1080
9
(MHz)
FRAME
(lines)
1440
720
1280
1920
1920
FRAME
(lines)
124
FRAME
(lines)
114
220
148
148
6-4 HDMI terminal
Input HDMI signal (VG859 signal generator), separately input the signals listed in table6 and check the display and
sound (32 KHz, 44.1 KHz, 48 KHz) at any situation (power on, channel switch and format convert, etc.)
HDMI signal format
SYNC
POLARITY
PIXEL
CLOCK
Display
SYNC
WIDTH
BACK
PORCH
HDMI
1/2/
DVI
Timing
Table
Table6
FREQ FREQ PERIOD
MODE
640x480
800x600
1024x768
1280x768 (1280cvt)
1280x768
1280x1024
1360x768
1366x768
1920x1080
59.94Hz 1440x480i
59.94Hz 720x480P
60Hz 1280x720P
60Hz 1920X1080i
24Hz 1920x1080P
30Hz 1920x1080P
60Hz 1920X1080P
LINE(kHz)
FRAME(Hz)
31.47 800 Negitive 25.175 640 96 48
LINE (pixel)
FIELD(lines)
LINE
FIELD
(MHz)
LINE (pixel)
FRAME
(lines)
LINE (pixel)
FRAME
(lines)
LINE (pixel)
FRAME
(lines)
59.94 525 Negitive 480 2 33
37.88 1056 Positive 40 800 128 88
60.32 628 Positive 600 4 23
48.36 1344 Negitive 65 1024 136 160
60 806 Negitive 768 6 29
47.4 1440 Positive 68.25 1280 32 80
59.99 790 Negitive 768 7 12
47.78 1664 Negitive 79.5 1280 128 192
59.87 798 Positive 768 7 20
63.98 1688 Positive 108 1280 112 248
60.02 1066 Positive 1024 3 38
47.71 1792 Positive 85.5 1360 112 256
60.02 795 Positive 768 6 18
47.71 1792 Positive 85.5 1366 112 256
59.79 795 Positive 768 6 18
67.5 2200 Positive 148.5 1920 44 148
60 1125 Positive 1080 5 36
15.73 1716 Negitive 27 1440 124 114
59.94 262.5 Negitive 480 3 15
31.47 858 Negitive 27 720 62 60
59.94 525 Negitive 480 6 30
45 1650 Positive 74.25 1280 40 220
60 750 Positive 720 5 20
33.75 2200 Positive 74.25 1920 44 148
60 562.5 Positive 1080 5 15
27 2750 Positive 74.25 1920 44 148
24 1125 Positive 1080 5 36
33.75 2200 Positive 74.25 1920 44 148
30 1125 Positive 1080 5 36
67.5 2200 Positive 148.5 1920 44 148
60 1125 Positive 1080 5 36
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