Panasonic Viera TCL32XM6 Manuale utente

FILE NO

SERVICE MANUAL

LED TV

C-

-L

2XM6

XM6XM6

XM6

C-

-L32XM6X

L32XM6XL32XM6X

L32XM6X

TCTC

TC-

-L32XM6P

L32XM6PL32XM6P

L32XM6P

CONTENTS

1. Safety precautions .................................................................................................3

2. Alignment instructions and method of software upgrading.....................................5

3. Working principle analysis of the unit ................................................................... 12

4. Specifications.......................................................................................................13

5. Block diagram ......................................................................................................14

6. IC block diagram..................................................................................................17

7. Wiring diagram ...................................................................................................24

8. Troubleshooting guide..........................................................................................28

9. Schematic diagram ..............................................................................................32

10. APPENDIX-A: Assembly list

APPENDIX-B: Exploded View

11.Disassembly and Assembly Instructions

Attention:

This

service

manual

only

for

service

personnel

take

reference

with. Before servicing

please

read

the

following

points

carefully.

Safety

precautions

1. Instructions

sure

switch

off

the

power

supply

before

replacing

welding

any

components

inserting/plugging

connection

wire

Anti

static

measures

taken

(throughout

the

entire production

process!):

not

touch

here

and

there

hand

will;

sure

use

anti

static

electric

iron;

It’s

must

for

the

welder

wear

anti

static

gloves.

Please

refer

the

detailed

list

before

replacing

components

that

have

special

safety

requirements.

not

change

the

specs

and

type

will.

2. Points for attention in servicing of LED

2.1

Screens

are

different

from

one

model

another

and

therefore

not

interchangeable.

sure

Use

the

screen

the

original

model

for

replacement.

2.2

The

operation

voltage

LED

screen

high voltage

sure

take

proper

measures

protecting

yourself

and

the

machine

when

testing

the

system

the

course

normal

operation

right

after

the

power

switched

off.

Please

not

touch

the

circuit

the

metal

part

the

module

That

operation

mode.

Relevant

operation

possible

only

one

minute

after

the

power

is switched

off.

2.3

not

use

any

adapter

that

not

identical

with

the

set.

Otherwise

will

cause

fire

or damage

the

set.

2.4

Never

operate

the

set

any

installation

work

bad

environment

such

wet

bathroom,

laundry,

kitchen,

nearby

fire

source,

heating

equipment

and

devices

exposure

sunlight

etc.

Otherwise

bad

effect

will

result.

2.5

any

foreign

substance

such

water,

liquid,

metal

slices

other

matters

happens

fall

into the

module,

sure

cut

the

power

off

immediately

and

not

move

anything

the

module

lest

it should

cause

fire

electric

shock

due

contact

with

the

high

voltage

short

circuit.

2.6

Should

there

smoke,

abnormal

smell

sound

from

the

module,

please

shut

the

power

off

once.

Likewise,

the

screen

not

working

after

the

power

the

course

operation,

the

power

must

cut

off

immediately

and

operation

allowed

under

the

same

condition.

2.7

not

pull

out

plug

the

connection

wire

when

the

module

operation

just

after

the

power

off

because

this

case

relatively

high

voltage

still

remains

the

capacitor

the

driving

circuit.

Please

wait

least

one

minute

before

the

pulling

out

plugging

the

connection

wire.

2.8

When

operating

installing

LED

please

don’t

subject

the

LED

components

bending,

twisting or

extrusion,

collision

lest

mishap

should

result.

2.9

most

the

circuitry

LED

set

composed

CMOS

integrated

circuits,

it’s

necessary to

pay

attention

anti

statics.

Before

servicing

LED

make

sure

take

anti

static

measure

and

ensure

full

grounding

for

all

the

parts

that

have

grounded.

2.10

There

are

lots

connection

wires

between

parts

behind

the

LED

screen.

When

servicing

moving

the

set

please

take

care

not

touch

scratch

them.

Once

they

are

damaged

the

screen

would

unable

work

and

way

get

repaired.

the

connection

wires,

connections

components

fixed

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

damage.

2.11

Special

care

must

taken

transporting

handling

it.

Exquisite

shock

vibration

may

lead

breakage

screen

glass

damage

driving

circuit.

Therefore

must

packed

strong

case

before

the

transportation

handling.

2.12

For

the

storage

make

sure

put

place

where

the

environment

can

controlled

prevent

the

temperature

and

humidity

from

exceeding

the

limits

specified

the

manual.

For

prolonged

storage,

necessary

house

anti-moisture

bag

and

put

them

altogether

one

place.

The

ambient

conditions

are

tabulated

follows:

Temperature

Scope

for

operation

~ + 35

Scope

for

storage

-20

+ 60o

Humidity

Scope

for

operation

20%

Scope

for

storage

10%

90%

2.13

Display

fixed

picture

for

long

time

may

result

appearance

picture

residue

the

screen,

commonly

called

“ghost

shadow”.

The

extent

the

residual

picture

varies

with

the maker

LED

screen.

This

phenomenon

doesn’t

represent

failure.

This

“ghost

shadow”

may

remain

the

picture

for

period

time

(several

minutes).

But

when

operating

please

avoid

displaying still

picture

high

brightness

for

long

time.

3. Points for attention during installation

3.1

The

front

panel

LED

screen

glass.

When

installing

please

make

sure

put

place.

3.2

For

service

installation

it’s

necessary

use

specified

screw

lest

should

damage

the

screen.

3.3

sure

take

anti

dust

measures.

Any

foreign

substance

that

happens

fall

down

between the

screen

and

the

glass

will

affect

the

receiving

and

viewing

effect

3.4

When

dismantling

mounting

the

protective

partition

plate

that

used

for

anti

vibration

and

insulation

please

take

care

keep

intactness

avoid

hidden

trouble.

3.5

sure

protect

the

cabinet

from

damage

scratch

during

service,

dismantling

mounting.

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

board

according

the

wiring

diagram,

connect

the

power

and

press

power key (Remote controller or Keypad)

button

turn

the

TV.

a) Test

the

voltage

P802/power board ,

the

data

shown

table1:

Table1

voltage

data

P802

For 32”

P802 Pin1,2 Pin3,4 Pin5,6,7

Pin8,9 Pin10,11

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 Duty 5%~100% NC

(3) Alignment flow-chart

The

alignment

flow-chart

shown

fig-1

Check if EDID, HDCP KEY, FLASH are written

Combined test for general assembly

Auto Gamma adjustment

Connect to the center signal source and check each

Function of TV (station leaking, analog control, etc.)

Check the output of speaker.

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 function (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

(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

100IRE 0.2677

x 50IRE 0.2684

100IRE 0.2655

y 50IRE 0.2671

Adjust

Tolerance ±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.

() 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.

(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)Preset channel

Load preset channel for production line.

6)Full Power

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.

7)ADC Calibration

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) Performance check

6-1

function

Connect

the

center

signal

source,

enter

Channel

→

auto

tuning,

check

there

are channels

skipped,

check

the

picture

and

speaker

are

normal.

6-2

terminals

Input

Video

signal,

check

the

picture

and

sound

are

normal.

6-3

YPbPr

terminal

Input

YUV

signal

(VG859

signal

generator),

separately

input

the

YUV

signals

listed

table4

and check

the

display

and

sound

are

normal

any

situation

(power

on,

channel

switch

and

format convert,

etc.)

Table4

YUV

signal

format

FREQ PERIOD SYNC

POLARITY

PIXEL

CLOCK

Display SYNC

WIDTH

BACK

PORCH

MODE LINE(kHz)

FRAME

(Hz)

LINE (pixel)

FIELD

(lines)

LINE

FIELD (MHz)

LINE (pixel)

FRAME

(lines)

LINE (pixel)

FRAME

(lines)

LINE (pixel)

FRAME

(lines)

15.734

1716

Negitive 27

1440

124

114

59.94Hz 720x480i 59.94

525

Negitive 480

31,469

858

Negitive 27

720

59.94Hz 720x480P 59.94

525

Negitive 480

1650

Positive 74.25

1280

220

60Hz 1280x720P 60

750

Positive 720

33.75

2200

Positive 74.25

1920

148

60Hz 1920X1080i 60

1125

Positive 1080

67.5

2200

Positive 148.5

1920

148

60Hz 1920X1080P 60

1125

Positive 1080

6-4

HDMI

terminal

Input

HDMI

signal

(VG859

signal

generator),

separately

input

the

signals

listed

table6 and

check

the

display

and

sound

(32 KHz,

44.1 KHz,

48 KHz)

any

situation

(power

on,

channel switch

and

format

convert,

etc.)

Table6

HDMI

signal

format

HDMI

1/2/

DVI

Timing

Table

FREQ FREQ PERIOD

SYNC

POLARITY

PIXEL

CLOCK Display SYNC

WIDTH

BACK

PORCH

MODE LINE(kHz)

FRAME(Hz)

LINE (pixel)

FIELD(lines)

LINE

FIELD (MHz)

LINE (pixel)

FRAME

(lines)

LINE (pixel)

FRAME

(lines)

LINE (pixel)

FRAME

(lines)

31.47 800 Negitive 25.175 640 96 48

640x480 59.94 525 Negitive 480 2 33

37.88 1056 Positive 40 800 128 88

800x600 60.32 628 Positive 600 4 23

48.36 1344 Negitive 65 1024 136 160

1024x768 60 806 Negitive 768 6 29

47.4 1440 Positive 68.25 1280 32 80

1280x768 (1280cvt) 59.99 790 Negitive 768 7 12

47.78 1664 Negitive 79.5 1280 128 192

1280x768 59.87 798 Positive 768 7 20

63.98 1688 Positive 108 1280 112 248

1280x1024 60.02 1066 Positive 1024 3 38

47.71 1792 Positive 85.5 1360 112 256

1360x768 60.02 795 Positive 768 6 18

47.71 1792 Positive 85.5 1366 112 256

1366x768 59.79 795 Positive 768 6 18

67.5 2200 Positive 148.5 1920 44 148

1920x1080 60 1125 Positive 1080 5 36

15.73 1716 Negitive 27 1440 124 114

59.94Hz 1440x480i 59.94 262.5 Negitive 480 3 15

31.47 858 Negitive 27 720 62 60

59.94Hz 720x480P 59.94 525 Negitive 480 6 30

45 1650 Positive 74.25 1280 40 220

60Hz 1280x720P 60 750 Positive 720 5 20

33.75 2200 Positive 74.25 1920 44 148

60Hz 1920X1080i 60 562.5 Positive 1080 5 15

27 2750 Positive 74.25 1920 44 148

24Hz 1920x1080P 24 1125 Positive 1080 5 36

33.75 2200 Positive 74.25 1920 44 148

30Hz 1920x1080P 30 1125 Positive 1080 5 36

67.5 2200 Positive 148.5 1920 44 148

60Hz 1920X1080P 60 1125 Positive 1080 5 36

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