Xoceco LC-40K17 Schematic

LC-40K17

CONTENTS

Safety instructions………………………………………………………………………..… Adjustment instruction …………………………….…….…………………………….… Trouble shooting ……………………………………………………….…………………… Method of software upgrading ………………………………………….…….…………… LC-40K17 working principle analysis……………………………….………….…………. LC-40K17 block diagram…………………………………..……………………….………… IC block diagram………………………………………………………………………..…… Wiring diagram ……………………………………………………………..……………... Main assembly……………………………………………………………………………..… Identification criteria for the bright spot and dark spot of the LCD screen………..…. Troubleshooting charts………………………………………………………………..…… Printed circuit boards ………………………………………………………………...………. Schematic diagram …………………………………………………………………….…..

1 3 5 7 9 10 11 19 20 21 22 25 29

APPENDIX: EXPLODED VIEW PART LIST

Attention: This service manual is only for service personnel to take reference with. Before

servicing please read the following points carefully.

Safety instructions

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 LCD

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 LCD screen is 700-825V. Be sure to take proper measures in 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 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 LCD please don’t subject the LCD components to bending, twisting or extrusion, collision lest mishap should result.

2.9 As most of the circuitry in LCD TV set is composed of CMOS integrated circuits, it’s necessary to pay attention to anti statics. Before servicing LCD 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 LCD 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.

2.11 Special care must be taken in transporting or handling it. Exquisite shock vibration may lead to breakage of screen glass or damage to driving circuit. Therefore it must be packed in a strong case before the transportation or handling.

2.12 For the storage make sure to put it in a place where the environment can be controlled so as to prevent the temperature and humidity from exceeding the limits as specified in the manual. For prolonged storage, it is necessary to house it in an anti-moisture bag and put them altogether in one place. The ambient conditions are tabulated as follows:

Temperature Scope for operation 0 ~ +50 oC

Scope for storage -20 ~ +60 oC

Humidity Scope for operation 20% ~ 85%

Scope for storage 10% ~ 90%

2.13 Display of a fixed picture for a long time may result in appearance of picture residue on the screen, as commonly called “ghost shadow”. The extent of the residual picture varies with the maker of LCD 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.

3. Points for attention during installation

3.1 The front panel of LCD 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 please take care to keep it in intactness so as to avoid hidden trouble.

3.5 Be sure to protect the cabinet from damage or scratch during service, dismantling or mounting.

Alignment instruction

1 Alignment equipment

PM5518 (video signal generator) K-7253 (VGA signal generator) CA210 (white balancer)

2 Alignment flow-chart

The alignment flow-chart is shown as fig-1

To produce CPU board and analog board

Check the CPU board and analog board

Connect with central signal source, then check each function of TV such as analog control etc., check the output of headphone and speaker

Input AV/S and HD signal, then check each function of all the terminals

Input VGA signal (one format), check if the displ ay is normal under PC condition, check each function such as analog control etc., check ho rizo ntal /vertical center etc.

Check the accessories and pack t hem in box

Fig-1 adjustment flow-chart

3 Unit adjustments Connect CPU board and analog board according to wiring diagram of 203-L37K70-01JL, connect with power and observe the display. Method for entering factory menu: press “VOL+”, “MUTE” and “VIDEO” repeatedly to enter factory menu; press “ENTER” to select different items when the first line of each adjustment item just lights up; input VGA and DVI signal, then select the “mode” item; after that, you can press “enter” to select three kinds of color temperature namely 6500K, 9300K and 12000K press “MENU” to exit.

Note: the white balance adjustment should be done under “nature” picture mode.

Check DDC and FLASH

All testing

Preset ex-factory

3.1 EEPROM initialization Enter the first page of factory menu, select “clear eeprom” and then press “enter”, shut down the unit after “ok” appears.

3.1.1 VPC3230 setting Enter the third page of factory menu, select SCART_PRE: 55.

3.2 VGA/DVI channel adjustment

3.2.1 Preset VGA channel mode Input VGA signal (PATTERN 5: Final Test) of K-7253, select TIME301 (640*350/70Hz), press “AUTO” to do the auto adjustment until the screen is filled with picture. Use the same method to do auto adjustment for the following items:

TIME302 (720*400/70Hz) TIME303 (640*480/60Hz) TIME311 (800*600/60Hz) TIME313 (1024*768/60Hz) TIME315 (640*480/75Hz) TIME316 (800*600/75Hz)

TIME317 (1024*768/75Hz) TIME319 (1280*1024/75Hz) TIME339 (1280*1024/60Hz)

3.2.2 ADC adjustment of VGA channel Adjust ADC-gain to 15.

3.2.3 White balance adjustment VGA/DVI channel Input K-7253 8 level gray-scale signal of TIME311 and PATTERN471, enter white balance adjustment menu; adjust the second and seventh levels using white balance. Select 6500k of “mode”, adjustment offset_R, offset_G and offset_B, let the color coordinate of the second level be 308 and 316 and its brightness be 3.5nit more or less. Adjust gain_R, gain_G and gain_B, let the color coordinate of seventh level be 308 and 316. Adjustment offset_R, offset_G, offset_B, gain_R, gain_G and gain_B repeatedly until the value of the two levels gray-scale be 308 and 316. Select 9300k of “mode”, adjustment offset_R, offset_G and offset_B, let the color coordinate of the second level be 285 and 293 and its brightness be 3.5nit more or less. Adjust gain_R, gain_G and gain_B, let the color coordinate of seventh level be 285 and 293. Adjustment offset_R, offset_G, offset_B, gain_R, gain_G and gain_B repeatedly until the value of the two levels gray-scale be 285 and 290. Select 12000k of “mode”, adjustment offset_R, offset_G and offset_B, let the color coordinate of the second level be 270 and 283 and its brightness be 3.5nit more or less. Adjust gain_R, gain_G and gain_B, let the color coordinate of seventh level be 270 and 283. Adjustment offset_R, offset_G, offset_B, gain_R, gain_G and gain_B repeatedly until the value of the two levels gray-scale be 270 and 283.

Note: gain_R, gain_G, gain_B should not value above 128 and let one of them be 128 at

least. Offset_R, off set _G and offset_B of DVI should not value above 10.

3.3 Adjustment TV channel

3.3.1 Adjustment VCO, OPTION, sub-brightness and sub-contrast Input AV color bar signal (PM5518 COLOR BAR 100%) to VIDEO 1 terminal, enter the first page of factory menu, press “enter” after selecting “auto color”, display “OK” after 2 seconds; then you can finish the VCO adjustment; set the value of “back light” to 0, “option” to 10 and “s-bright” to 140 as well as S-contrast to 140. Set the Max Volume to 44 when the AVC is OFF and SRS is OFF. Set the page number of VPC3220 to 0, 1, 3, 3, 3, 3, 0.

3.3.2 white balance adjustment of TV channel Input AV signal (PM5518, PAL system, 8 level gray-scale signal), enter adjustment menu of white balance, and adjust the second level and seventh level using white balance. Adjust offset_R, offset_G and offset_B to let color coordinate of the second level be 285 and 290 and its brightness be about3.5nit. Fixate gain_B to 128, adjust gain_R, gain_G to let color coordinate of the seventh level be 285 and 290. Adjust offset_R, offset_G, offset_B, gain_R and gain_G, repeatedly using the same method until the value of the two levels gray-scale be the specified value.

3.4 white balance adjustment YPbPr channel Input YPbPr signal of K-7253 to YPbPr-1 terminal, input TIME380 (480i) PATTERN471 8 level gray-scale signal, Enter adjustment menu of white balance, adjust the second level using white balancer. Adjust offset_R, offset_G and offset_B, to let color coordinate of the second level be 285 and 290 and its brightness be about 3.5nit. Input 8 level gray-scale signal of TIME392 (480p), TIME394 (720p) and TIME396 (1080i) separately, repeat the above operations to let color coordinate of the second level be 285 and 290 and its brightness be about 3.5nit.

4 Performance check

4.1 TV function Enter searching menu → auto search, connect RF-TV terminal with central signal source and check if there are channels be skipped

4.2 AV/S, YPbPr terminals Input AV/S, HD signal, check if it is normal.

4.3 VGA terminal Insert VGA terminal, input VGA format signal of 640 X 480@60 Hz, check if the display is normal. If interference exists, press the auto adjusts button on remote control again and check if it is normal.

4.4 DVI terminal Insert DVI terminal, input signal of 640 X 480@60 Hz signal and check if the display is normal.

4.5 check sound channel Check the speaker and headphone of each channel.

4.6 presetting before ex-factory

item setting item setting item setting

Picture mode NATURE OSD language English BALANCE 50

Sound mode NEWS VGA color

N/R WEAK SPEAKER ON CCD OFF

SCREEN 16:9 HEAD PHONE ON Turn off TV

9300 SRS OFF

temperature

Trouble shooting

Before servicing please check to find the possible causes of the troubles according to the table below.

1.Antenna (signal):

Picture is out of focus or jumping  Bad status in signal receiving

 Poor signal  Check if there are failures with the electrical connector or

the antenna.

 Check if the antenna is properly connected.

Fringe in picture  Check if the antenna is correctly oriented.

 Maybe there is electric wave reflected from hilltop or

building.

Picture is interfered by stripe shaped bright spots

There appear streaks or light color on the screen

 Possibly due to interference from automobile, train, high

voltage transmission line, neon lamp etc.

 Maybe there is interference between antenna and power

supply line. Please try to separate them in a longer distance.

 Maybe the shielded-layer of signal wire is not connected

properly to the connector.

 Check if interfered by other equipment and if interfered

possibly by the equipment like transmitting antenna, non-professional radio station and cellular phone.

2.TV set:

Symptoms Possible cause Unable to switch the power on  Check to see if the power plug has been inserted

properly into the socket.

No picture and sound  Check to see if the power supply of liquid crystal TV

has been switched on. (As can be indicated by the red LED at the front of the TV set)

 See if it’s receiving the signal that is transmitted from

other source than the station

 Check if it’s connected to the wrong terminal or if the

input mode is correct.

 Check if the signal cable connection between video

frequency source and the liquid crystal TV set is correct.

Deterioration of color phase or color tone Screen position or size is not proper  Check is the screen position and size is correctly set

Picture is twisted and deformed  Check to see if the picture-frame ratio is properly set

Picture color changed or colorless  Check the “Component” or “RGB” settings of the

Picture too bright and there is  Check if the contrast setting is too high.

 Check if all the picture setups have been corrected.

up.

liquid crystal TV set and make proper adjustment according to the signal types.

distortion in the brightest area  Possibly the output quality of DVD broadcaster is set

too high.

 It maybe also due to improper terminal connection of

the video frequency signal in a certain position of the

system. Picture is whitish or too bright in the darkest area of the picture

No picture or signal produced from the displayer if “XXX in search” appears.

There appears an indication - “outside the receivable scope)

Remote control cannot work properly  Check if the batteries are installed in the reverse

No picture and sound, but only hash.  Check if the antenna cable is correctly connected, or

Blur picture  Check if the antenna cable is correctly connected.

No sound  Check if the “mute” audio frequency setting is

When playing VHS picture search tape, there are lines at the top or bottom of the picture.

 Check if the setting for the brightness is too high  Possibly the brightness grade of DVD player

(broadcaster) is set too high.

 Check if the cable is disconnected.  Check if it’s connected to the proper terminal or if the

input mode is correct.

 Check if the TV set can receive input signal. The

signal is not correctly identified and VGA format is

beyond the specified scope.

order.

 Check if the battery is effective.  Check the distance or angle from the monitor.  Check if there is any obstruct between the remote

control and the TV set.

 Check if the remote control signal- receiving window

is exposed to strong fluorescence.

if it has received the video signal correctly.

 Of if it has received the right video signal.

selected.

 Check if the sound volume is set to minimum.  Make sure the earphone is not connected.  Check if the cable connection is loose.

 When being played or in pause VHS picture search

tape sometimes can’t provide stable picture, which

may lead to incorrect display of the liquid crystal TV,

In this case please press “auto” key on the remote

control so as to enable the liquid crystal TV set to

recheck the signal and then to display correct picture

signal

Method of software upgr adi ng

Steps of software upgrading are as follows:

1. Select a serial connection wire and a VGA connection wire and then connect them by means of a patch panel;

2. Use a serial wire to connect the PC to the patch panel and set TV set to off state; Open the software upgrade file holder and double click

FlashUpgraderNT (use under window 2000/XP/NT)

FlashUpgrader (use under window 98),

The following interfaces will show up after running the program:

Based on the computer features, set up the serial port (COM Port). Select corresponding serial port (if it’s unable to FLASH WRITE, change to another port). Baud is selected to be 115200. Then select Reset Target After Download. Click FLASH pushbutton, it’s ready to run. For other settings, please refer to the Fig. Above (already defaulted by the system, normally no need to change). Switch on TV set the FLASH write program begins to run;

After FLASH write is over, push button “cancel” will become flash. Then shut the main power supply

and its OK just switch it on again.

Note: Do not shut the power off or turn the TV set on during the FLASH write. Otherwise it may lead to no way for flash to rewrite.

LC-40K17 working pr inciple analysis

Please refer to LC-40K17 BLOCK DIAGRAM in order to know the working principle of LC-40K17. Brief introduction to its signal flow is shown as follows: RF signal produces composite color television signal through TUNER201, the signal together with AV1/SVHS (SVHS priority) and AV2 etc. are sent to U29 VPC3230D to decode and do switching selection. In addition to decode the selected video signal, part of the selected video signal is also sent to AV terminal. It will be sent to U13 FL12310 in the form of ITU-R656 signal format of 8BIT to

do line-by-line process.

Send two ways YPRPB signal to U30 MST9883 through selection by N1 BA7657F83 in order to do the A/D conversion. After this, the signal will be converted into YUV signal of 24BIT, send it to FLI2310 also. After a series of procedure such as matrix, chroma and tint etc. by FL12310, the two ways signal will be converted into RGB of 24bit, then send it to the main processing chip U12 JAG-ASM. There are another two signals sent to U12 also: RGB signal of computer VGA, RGB signal of 24BIT produced by DV1 through U15 TFP403/501. Do the picture format processing for the three kinds of signal in U12. Firstly do the A/D conversion for RGB signal of VGA, and then do the switching selection together with the other two kinds of signal. And then they will be converted into 1024*768 format through digital display processing such as OSD, GAMMA correction, brightness and contrast etc. output it in the form of 24BIT RGB signal. Send it to LVDS convertor U31 DS90C383, then it will be converted into signal format which can be accepted by LCD screen namely 3 low-voltage differential signal and 1 clock signal, finally send it to LCD screen to do the picture display. PWM of U12 can also be used to control the brightness of back light-source.

Send SIF (the second IF) outputted by tuner to audio processor NA01 MSP3410; Send audio signal DVI and VGA to MSP3410 also; send YPRPB, AV1/SVHS and audio signal AV2 through switching selection by U34 HEF4052; Audio signal of SIF will be done the switching selection together with another three ways of audio signal; finally volume control and sound effect processing will be done. Output left-right sound channel signal R/L. one will be sent to SRS sound field processor NA03 M62494 to do SRS processing and finally amplified by NA04 TPA3008D2 to drive the speaker, one will be used to drive the headphone through NA02 TLE2142 and the last part will be outputted as R/L of AV OUT.

LC-40K17 BLOCK DIAGRAM

RGB

RGB 24bit

U15 DVI

DRIVER TFP403

RGB RF 24bit SIF RGB V 24bit

ITU-R656 AV1-V/S-Y 8bit

SVHS-C

TUNER1

VIDEO DECODER

VPC3230

U29

U13

DEINTER LACER FLI2310

AV2 -V

U14

SDRAM

AV-V OUT

R G B FB I IC BUS

1 BA76 57F8 3

U32 CCD Z86229

U30

ADC MST98 83

EEPROM

MICROCONTROLER

TSC80251G2D

YprPb

YprPb2 YUV

24bit R/L

SIF DVI-R/L VGA-R/L R/LR/L

U34

HEF4052

YprPb1-R/L R/L R/L R/L

YprPb2-R/L R/L R/L

AV1/SVHS-R/L

AV2-R/L

A01

AUDIO

PROCESSOR

MSP3420

A03

SRS 3D STEREO CONTROLLER

M62494

AV-R/L OUT

SCALER

JAG-ASM

U19

SDRAM

U12

U31

DS90C383

U20

SDRAM

FLASH

MEMORY

IR / KEYBOAD

A02

TLE2142

NA04

AUDIO

AMPLIFIER

TPA3008D2

PANEL

LVDS

DRIVER

HEADPHONE

SPEAKER

IC block diagram

1.AD9883

Pins description: 54,48,43 PIN: Input of YPRPB 2-9 PIN: Output of Y 12-19 PIN: Output of U 70-77 PIN: Output of V 56,57 PIN: SCL, SDA applied for control the operation of IC 66 PIN: Output of horizontal synchronizing 64 PIN: Output of field synchronizing 65 PIN: Output of DE 67 PIN: Output of CLK 11,26,34 PIN: 3.3V power supply

2.VPC3230

Pins description:

70 PIN: Video of AV OUT 71 PIN: Input C 72 PIN: Input Video of Y or AV1. 74 PIN: Input Video of AV2. 75 PIN: Input Video of TV 31-34, 37-40 PIN: Output format signal of. ITU-R656 27 PIN: Output of CLK 13,14 PIN: SCL, SDA applied for control the operation of IC 10,29,45,52 PIN: 3,3V_VPC power supply. 59,69,76 PIN: 5V power supply.

3.FLI2310-Simplified Internal Block Diagram

Pins description:

196,199-205 PIN: Input of format signal of ITU-R656 11-15,18-20 PIN: Input of U 21-28 PIN: Input of V 29,32-35,38-40 PIN: Input of Y 1 PIN: Input of YPRPB horizontal synchronizing 2 PIN: Input of YPRPB field synchronizing 4 PIN: Input of YPRPB-CLK 5 PIN: Input of YPRPB-DE 195 PIN: Input of AV/TV-CLK 114 PIN: Input of SDRAM-CLK 136,137,140-145 PIN: Output of R 148-155 PIN: Output of G 126,127,130-135 PIN: Output of B 125 PIN: Output of CLK 111 PIN: Output of SDRAM-CLK

118 PIN: Output of horizontal synchronizing 119 PIN: Output of field synchronizing 120 PIN: Output of DE 45,46 PIN: SCL, SDA applied for control the operation of IC 8,62,112,193,171,187 PIN: 3.3V power supply 155,168,16,68,123,197 PIN: 1.8V power supply

4.JAG-ASM

Pins description:

A12, A13: Input of VGA-R A16, A17: Input of VGA-G A20, A21: Input of VGA-B P1, P2, N2, N3, M1-M4: Input of DVI-B L1-L4, K2-K4, J1: Input of DVI-R J2-J4, H1-H3, G1, G2: Input of DVI-G

AA2,AA3,Y1-Y3,N1-N3: Input of AV/TV/YPRPB-B N4,V1-V4,U1-U3: Input of AV/TV/YPRPB-G U4,T1-T4,R1-R3: Input of AV/TV/YPRPB-R AB3: Input of DVI horizontal synchronizing AB1: Input of DVI field synchronizing G4: Input of DVI-CLK F1: Input of DVI-DE D6: Input of VGA horizontal synchronizing P3: Input of VGA field synchronizing F2: Input of AV/TV/YPRPB horizontal synchronizing G3: Input of AV/TV/YPRPB field synchronizing P4,AA4,AF12: Input of AV/TV/YPRPB-CLK G6: Input of AV/TV/YPRPB-DE AD13-15,AE13-15,AF14,AC15: Output of R AF15,AC16,AD16,AE16,AD17,AE17,AF17,AC18: Output of G AD18,AE18,AF18,AC19,AD19,AE19,AD20,AE20: Output of B AE21: Output of horizontal synchronizing AC21: Output of field synchronizing AC13: Output of CLK AF20: Output of EN AD21: Output of EN VDD(power switch) AF22: Output of EN BKL(back light switch) B1: Output of PWW(back light adjustment) F3, F4: SCL, SDA applied for control the operation of IC B22,C22,D20,C21;H4;D21;AC8: 2.5V D7;A5;A26;AF10: 3.3V C10,D10-D19: JA2.5V1 C8,D8,D9: JA2.5V2

5. TFP403

functional block diagram

3.3 V

Internal 50-

Termination



3.3 V

1.8 V

Regulator

3.3 V

Rx2+

Rx2-

Rx1+

Rx1-

Rx0+

Rx0-

RxC+

RxC-

RED(0-7)

CTL3 CTL2

GRN(0-7)

CTL1

BLUE(0-7)

VSYNC HSYNC

Panel

Interface

Latch

PLL

Channel 2

Channel 1

Channel 0

Data Re co ver y

and

Synchronization

+ _

CH2(0-9)

CH1(0-9)

CH0(0-9)

TMDS

Decoder

QE(0-23) QO(0-23)

ODCK DE SCDT

CTL2 CTL1 VSYNC HSYNC

Terminal Functions

TERMINAL

NAME NO.

AGND 79 GND Analog ground? Ground reference and current return for analog circuitry AV

82,85,88,91V

CAP 67 V

CTL[2:1] 41,40 DO General-purpose control signals? Used for user defined control. In normal mode CTL1 is not powered down

DE 46 DO Output data enable? Used to indicate time of active video display versus nonactive display or blank time.

DFO 1 DI Outp ut cloc k data f ormat? Contro ls the o utput c lock ( ODCK) f ormat f or eith er TFT or DSTN panel su pport . For

DGND 5,39,68 GND Digital ground? Ground refe rence and current return for di gi tal core DV

6,38 V HSYNC 48 DO Horizontal sync output OCK_INV 100 DI ODCK polarity? Selects ODCK edge on which pixel data (QE[23:0] and QO[23:0]) and control signals

I/O

I/O DESCRIPTION

Analog VDD? Power supply for analog circuitry. Nominally 3.3 V

Bypa ss c apa ci t or? 4.7F tantalum and 0.01 F ceramic conn ected to gro und. This ca paci tor is o ptiona l for

the TFP403, but is required for the TFP501.

via PDO

DESCRIPTION

During blank, on ly HSYNC, VSYNC, and CTL1-2 are tr ansmitted. During tim es of active display , or nonbla nk, only pixel data, QE[23:0] and QO[23:0], is transmitted.

High : Active display time Low: Blank time

TFT support ODCK clock runs cont inuously . For DST N support OD CK only clock s when DE is high; ot herwise ODCK is held low when DE is low .

High : DSTN support/ODCK held low when DE = low Low: TFT support/ODCK runs continuously.

Digital VDD? Power supply for digital core. Nominally 3.3 V

(HSYNC, VSYNC, DE, CTL1-2 ) are latched Normal mode:

High : Latches output data on rising ODCK edge Low : Latches output data on falling ODCK edge

80,81,83,84,86,87,89,90: Input of four DVI different signal 92: DDC-SCL 93: DDC-SDA 95: PROM-SCL 96: PROM-SDA 2: Input of POWER DOWN

9: Input of OUTPUT DRIVE POWER DOWN 8: Output of synchronization check 10-17: Output of B 20-27: Output of G 30-37: Output of R 44: Output of CLK 46: Output of data enabling 47: Output of field synchronizing 48: Output of horizontal synchronizing 6,38,82,91,18,29,57,78,97: 3.3V power supply

6. DS90C383

51,52,54-56,3,50,2: Input of R 4,6,7,11,12,14,8,10: Input of G 15,19,20,22-24,16,18: Input of B 27: Input of horizontal synchronizing 28: Input of field synchronizing 30: Input of data enabling 31: Input of CLK 32: Input of power enabling 37,38,41,42,45,46,47,48: Output of 4different signal 39, 40: Output of 1 CLK signal 1, 9, 26, 34, 44: 3.3V power supply

7. MSP3420

50: Input of VGA-L 51: Input of VGA-R 53: Input of DVI-L 54: Input of DVI-R 56: Input of AV1/S/AV2/YPRPB1/YPRPB2-L 57: Input of AV1/S/AV2/YPRPB1/YPRPB2-R 67: Input of SIF 25: Input of earphone -L 24: Input of earphone -R 27: Output of R 28: Output of L 36: Output of AV-R 37: Output of AV-L 2: SCL 3: SDA 11,12,13;39;65,66: +5V—MSP

Wiring diagram

Tokeyboard

Toremot e cont rol

667-L40K17N-56

CPU board

AV processing boa rd

666-L40K17N-4 0

Tospeaker

To ear phone

Top pane

Right panel

Main assembly

NAME NO. MAIN COMPONENT AND NO.

AV processing board

CPU board

IR board Keypad board Earphone assy

Power supply board KAS25 667-L40K17-20 Outsourcing Remote control (RC-U38R-0E) Panel (LTA400W2-L01) Connector board 667-L40K17-46

667-L40K17N-40 NA01

NA03 N04

667-L40K17N-56

667-L37K7-09 667-L40K17-05 667-L37K7-10

301-UL27K6-38RE

335-40004-00

U12 U13 U15 U29 U30 U31 U2 U4

Outsourcing Outsourcing

MSP3420 (353-34200-10)

M62494FP (353-62494-20)

TPA3008D2 (353-30080-10)

JAG-ASM (353-0JAG0-00) FLI2310 (353-23100-00)

TFP403PZP (353-04030-10)

VPC3230D (353-32300-80) MST9883B (353-98830-10) DS90C385 TSC80251G2D (353-80251-10) AT49F002NT (352-49002-70)

(353-03830-70)

Identification criteria for the bright spot and dark spot of the LCD screen

Category criteria

One single

Bright

spo

Dark

spots

Total defected point ≤8 ≤7 ≤5 ≤4 /

spot

2 neighboring

spots

Total No. ≤5 ≤2 ≤5 ≤2 ≤3

One single

spot

Two

neighboring

spots

Total No. ≤6 ≤7 ≤5 ≤4 ≤10

15" 20" 22" 30" 40" 15" 20" 22" 30" 40"

≤5 ≤2 ≤5 ≤2 ≤3

≤2 ≤1 ≤2 ≤1 ≤1

≤6 ≤7 ≤5 ≤4 ≤10

≤2 ≤2 ≤2 ≤1 ≤5

Q’ty allowed Distance between two spots

≥15mm

≥10mm

≥5mm

Notes:

1. Definition of defected point (bright spot, dark spot): It is identified as a defected point if its area exceeds 1/2 of a single picture element (R,G,B).

2. Definition of bright spot: It is identified as a bright spot if it is bright in the state of dark field and its bright size remains unchanged

3. Definition of dark spot: It is identified as a dark spot if it is dark in the state of white field and its dark size remains unchanged

4. Definition of two neighboring points: Defects of a group of picture elements(RB,RG,GB).

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