Xoceco LC-22K9 Schematic

COLOR TELEVISION

LC22K9

CONTENT

Safety instructions………………………………………………………………………..…

Instructions on adjusting and testing…………………………….…….…………………

Trouble shooting……………………………………………………….……………………

Principle analysis of LC-22K9……………………………………….………..………….

LC22K9 BLOCK DIAGRAM…………………………………………………………………0

Wiring diagram……………………………………………………………..……………....

Components No…………………………………………………………………………….…

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

Troubleshooting guide………………………………………………………………..……

Exploded views…………………………………………………………………………..…

Schematic diagram…………………………………………………………………….…..

1

3

6

9

10

15

16

17

18

21

23

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

1.1 Be sure to switch off the power supply before replacing or welding any components

or inserting/plugging in connection wire

1.2 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.

1.3 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.

1

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

0---+50 C

operation

Scope for

- 20----60 C

storage

humidity Scope for

20%---85%

operation

Scope for

10%---90%

storage

2.13. Display of a fixed picture for a long time may result in appearance of picture residue on the screen,

as commmonly called “ghost shadow”. The extent of the residual picture varies with the maker of
LCD screen. This phenonmenon 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. Wheng installing it please make sure to put it in place.

3.2. For service or instatallation 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.

2

Instructions on adjusting and testing

The adjustment of LC22K9 excludes 2.30

2.1 Adjusting and calibrating the equipment

PM 5518(video frequency signal generator), K-7253(VGA signal generator),CA210(white balancer)

2.2 Adjustment and calibration procedure

2.3 Adjusting and calibrating the monitor board

Place the monitor board on the testing jig, turn on the power supply and switch on the set to see if it
is normal.

2.3.1 Adjusting the white balance of monitor board

Push the “Rest” key and “OK” key under the cover of the remote control set, repeat the push, enter

the factory menu. Select factory reset to initialize the MONITOR

Input the DVI signal to monitor board. (K-7253 time339 pattern 630 8 gray degree signals, input the
DVI signal to socket with 26 cores of monitor board by way of patch panel). Adjust the intermediate
second and seventh gray degree with CA210 white balancer. Preset value of R,G,B CUT to
100,and R,G,B DRV to 150, then, adjust the second gray degree (brightness: about 9nit) by R,G,B
CUT, to set the color coordinates of second gray degree to 270, 283. Adjust R,G,B DRV to set the
color coordinate of seventh gray degree to 270 and 283.

Note: Because the values of R,G,B CUT and R,G,B DRV directly determines the values of
brightness and contrast at the DVI terminal of monitor board, the white balance should be
adjusted according to the preset value strictly. The value after adjusting should be within
+/-10 of the preset value.

2.3.2 Calibrating ADC of Monitor
After finishing the adjustment of 2.3.1, set the VGA signal to 1024X768 60Hz mode. Access the

pane signal and connect it to VGA terminal of monitor. Adjust h port of the picture to make the
picture fully occupy the screen. Enter the factory menu and select items for ADC calibration and
calibrate the ADC according to the indication on the screen.

2.3.3 Adjusting the white balance of monitor:

Input 8 gray degree signals of 1024X768 60Hz mode, push “display” key on the remote control

set, adjust brightness and contrast, to set the brightness of second gray degree to 5nit and
seventh as 400nit.

For the diagram of adjustment and calibration procedure, see diagram 1

3

V

y

r

k

f

d

d

B CUT and B DRV is fixed as 128. Adjust R G CUT,to make second degree of the color
coordinate as 270 283. Adjust R G DRV to set seventh degree of the color coordinate to 270

283. Adjust R G CUT and R G DRV again and again, until both of the two gray degrees are at
270 and 283.

2.4 Connect decoder board and push button board with the monitor board verified to be normal
(LC-30K9/LC40K9 power is as per connection diagram 203-L30K90-01JL whereas LC-22K9 is as
per 203-L22K90-01JL). After power on, observe if the display is normal.

Method to enter factory menu: Continuously push key of “VOL+” “Mute”, “Video” to enter factory

menu. When the first line of each and every adjusting item is in the highest brightness push

Production of the main board and decoders on the line

General assembly and combined calibration

Connect central signal source, check T
functions (station skipping, analog quantit
control etc) . Check if the output of speake
is normal

Input AV/S and HDTV signal and chec
following functions of the terminals

Input VGA signal (one format), check i
display is normal under the PC status, an
functions (analog control), central of line an
field etc.

Check accessories, then packing

Figure 1. Adjustment and calibration procedure

Check if FLASH is written

Check Monitor board

Check decoders in media board

4

“ENTER” key to select different adjustment items. When VGA and DVI are input, select “mode”
and then push “ENTER” key and select three color temperatures 6500K,9300K,12000K. Push
“MENU” to quit factory menu.

Notice: Adjustment of Media Box must be performed under the mode --”Nature” of picture.

2.4.1 EPROM Initialization

Enter the first page of factory menu, select clear eprom and push “ENTER” key, shut off the set after

the appearance of “OK”.

2.4.2.Adjustin VGA and DVI channel

2.4.2.1 Presetting the VGA channel mode

Input VGA signal from K-7253 (PATTERN 5),select IME301,push “AUTO” to automatically adjust the
picture to be in full screen. Also auto-adjust
TIME302,TIME303,TIME311,TIME313,TIME315,TIME316,TIME317,TIME319,TIME339
respectively.

2.4.2.2 Adjusting ADC of VGA channel
Input K-7253 TIME311,PATTERN474 64 degree of gray signal, adjust adc-gain to maximum (no
bigger than 20), and to set two neighboring brightest degrees distinguishable.

2.4.2.3. Adjusting white balance of VGA and DVI channel
Input eighth degree of gray signal K-7253 TIME311 and PATTERN471, enter adjustment menu of
white balance, and use white balancer to adjust second and seventh degree of gray signal.
Select mode to be 6500K, adjust offset_R,offset_G,offset_B, to set second color coordination to 313
293 and the brightness to about 5nit.Fix gain_R as 128, adjust gain_G,gain_B to set seventh color
coordination to 313 293. Adjust offset_R,offset_G,offset_and gain_G,gain_B,again and again until
two gray degrees are 313 and 293.
Selct mode to be 9300K, adjust offset_R,offset_G,offset_B, to set second color coordinate to
281,311 and the brightness to about 5nit.Fix gain_G as 128, adjust gain_R,gain_B to set seventh
color coordinate to 281, 311.Adjust offset_R,offset_G,offset_and gain_R,gain_B,again and again
until two gray degrees are 281 313.

Select mode to be 12000K, adjust offset_R,offset_G,offset_B, to set second color coordinate to 270
283 and the brightness to about 5nit.Fix gain_B as 128, adjust gain_R,gain_B to set seventh color
coordinates to 270, 283. Adjust offset_R,offset_G,offset_B and gain_R,gain_G,again and again until
two gray degrees are 270 283.

Notice: The value of gain_R,gain_G,gain_B should not exceed 128.

2.4.3. Adjusting TV channel

2.4.3.1. Adjusting sub-brightness and sub-contrast of VCO and OPTION
Input AV color bar signal (PM 5518 COLOUR BAR 100%) to terminal of VIDEO 1, enter the first
page of factory menu, select auto color, push”ENTER”key. After two seconds, display of OK shows
the completion of adjustment. Adjust the value of Option to 9, S-brightness to 124,and S-contrast

140.

2.4.3.2 Adjusting white balance of TV channel
Input AV signal, (PM 5518 gray signal ),enter the adjustment menu of white balance, adjust second
and seventh degrees by white balancer. Adjust offset_R,offset_G,offset_B, set the second color
coordinate to 270 283 and the brightness to about 5nit.Fix gain_R as 133, adjust gain_R gain_G to
set the seventh color coordinate to 270 283.Adjust offset_R,offset_G,offset_B and
gain_R,gain_G,again and again until two gray degrees are 270 283.

5

2.4.4 Adjusting white balance of YPbPr channel

Input YPbPr signal of K-7253 to terminal of YPbPr, input 8 gray degree signal to

TIME380(480i)PATTERN471, adjust S-brightness to 20,and S-contrast 140.
Enter adjustment menu of white balance, adjust second degrees by white balancer. Adjust
offset_R,offset_G,offset_B to set the second color coordinate to 270 283 and the brightness to about
5nit.
Separately input the eighth degree of gray signals of TIME392(480p),TIME394(720p)and
TIME396(1080i)mode. Repeat the above operation so that the second color coordinates are 270
283 and the brightness about 5nit.

3. Functional inspection

3.1 TV function
Enter search menu---auto search, connect central signal to RF terminal and check if there is missing
of station.
Input A21 signal and check the function of CCD.

3.2 AV/S HDTV terminal
Input HDTV signal to AV/S, and check if it is normal.

3.3 VGA connector

Insert VGA signal connector, input 640 x 480@60 Hz VGA format signal, and check if display is
normal. If there is interfere on the picture, push the auto-adjust key on the remote control set once
more, check if the display is normal.

3.4 Inspection of PCMCIA channel

Insert PCMCIA card, switchover to this channel, and check if the display is normal.

3.5 Inspecting sound channel

Inspect if the output of speaker and earphone of channels is normal.

Trouble shooting

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

1.Antenna:

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

 Maybe broadcast signal itself is not good
 Check if the outdoor antenna is disconnected.
 Check if the antenna is correctly oriented.

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.

 Check if interfered by other equipment and if interfered

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

6

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

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

Picture too bright and there is
distortion in the brightest area

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

No picture and sound, but only

hash.

 Check if all the picture setups have been corrected.

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

 Check if the contrast setting is too high.
 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.

 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.

 Check if the batteries are installed in the reverse 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.

 Check if the antenna cable is correctly connected, or if it has

received the video signal correctly.

7

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

 Of if it has received the right video signal.

No sound  Check if the “mute” audio frequency setting is 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 playing VHS picture search
tape, there are lines at the top or
bottom of the picture.

 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 TVIn 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

8

Principle analysis of LC-22K9

For the working principle of LC-22K9 please refer to LC-22K9 block diagram of the complete TV set.

Following is a short description of the signal flow:

RF signal through an integral tuner TUNER201 produces complete color TV signal which is input,
together with AV1/SVHS(SVHS in priority)AV2 and PCMCIA video signals, into U29 VPC3230D for
conversion selection and decoding. Except for being decoded the selected video signal is divided in two
routes: one is fed to AV output terminal and another route of signal to special 21 line decoder U32
Z86229 of CCD/V-CHIP for decoding. After decoding by U32, the signal is sent back to U29 with
R,G,B,FB format and superimposed to the original picture decoded, then sent to U13 FLI2310 in
ITU-R656 of 8B1T format for progressive line processing.

YPbPr signal, after analog to digital conversion by U30 MST9883 into YUV with 24BIT is also sent
to FLI2310.

Above two routes of signal are processed by FLI2310 for matrix, color density and tint and then
output as RGB with 24 BIT into the main processor chip U12 JAG-ASM. There are other two routes of
signals: one route is RGB signal of VGA for computer, another route is DV1 into RGB signal with 24 bit to
U12 through interface of U15 TFP403/501. Three routes of signal are processed in U12 for picture
format. Among them, one route of VGA after A/D conversion for RGB is subject to selection for
conversion, together with other two routes, and then processed for digital display including OSD AND
GAMMA correction, and brightness and contrast processing and changed into 1024*768 format. The
RGB signal with 24BIT is output to the LVDS converter, U31 DS90C383A, for conversion into the
signal format which the screen can accept, that is, three pairs of low voltage differential signal and one
pair of time signal. And they are further sent to LCD screen for picture display. The PWM of U12 is also
used to control the brightness of the background light.
The second sound IF signal SIF output from tuner is sent to sound frequency processor N201
MSP3420; the sound frequency signal of YPRPB,DVI and PCMCIA is also sent to N201 after switching
over and selection by switch U34 HEF4052. The AV1/SVHS,AV2 and VGA audio signal are also sent to
N201 respectively, where the second sound IF SIF is first demodulated to the audio signal which,
together with four way audio signal, is selected for conversion, and then further sound magnitude
controlled and sound effect treated. The output of left and right signal R/L is divided into two routes: one
is sent to SRS sound field processor N203 M62494 for SRS surrounding sound processing, and further
used to drive the speaker after the D-type sound power amplification N207 LX1722 and
amplification of N205,N206,N208,N210 SI4532DY; the other route is used to drive earphone after
power amplification N212 TLE2142.
Power is supplied from power adapter and then converted into the power required by various
channels and circuits.

9

LC22K9 BLOCK DIAGRAM

VGA

DVI

RF

AV1-V/S-Y

SVHS-C

AV2-V

PCMCIA-YUV

AV-V OUT

YPrPb

U15 DVI
receiver

TFP403/501

TUNER201

VIDEO DECODER

VPC3230

U32

CCD
V-CHIP
Z86229

U30

ADC

MST9883

V

U29

FBV

RGB

RGB

SIF

ITU-R656

8bit

24bit
YUV

RGB
24bit

U13

DEINTER

LACER

FLI2310

U14

SDRAM

2

I C BUS

U3

EEPROM

RGB
24bit

U12

SCALER

RGB
24bit

JAG-ASM

U19

SDRAM

U20

SDRAM

U2

MICRO-CONTRLER

TSC80251G2D

U31

LVDS

DRIVER

DS90C383A

KEY BOARD

U4

FLASHMEMORY

IR

PANEL

SIF
AV1/SVHS-R/L
AV2-R/L
VGA-R/L

PCMCI-R/L
YPrPb-R/L
DVI-R/L

AV-R/L OUT

KEY(POWER)

IR

HEF4052

U34

PROCESSOR

U24
Microcontroller
ATTINY12L

N201

AUDIO

MSP3420

ON/OFF

POWER

R/L

SRS 3D STEREO

CONTROLLER

R/L

N205-N208 N210

AMPLIFIER

N203

M62494

R/L

D-CLASS

AUDIO

LX1722

Si4532DY

N212

TLE2142

R/L

R/L

HEADPHONE

SPEAKER

10

Block diagram and description of LC-22K9 main IC

1.MSP3420

2

Loud-

Subwoofer

speaker

Headphone

IS

SCART1

SCART2

DAC

Loud-

Sound

speaker

Processing

Pre-

processing

De-

modulator

DAC

Sound

Processing

Headphone

Prescale

DAC

Source Select

Select

Output

SCART

DAC

Prescale

ADC

DSP

Input

ADC

S1

S2

2

2

I

I

Sound IF1

Sound IF2

SCART

SCART1

SCART2

Select

SCART3

SCART4

Pins description:
2,3 PIN:SCL,SDA applied for control the operation of IC .
27,28 PINAoutput left and right sound channel R/L to speaker processor.
36,37 PIN:AV OUT of sound R/L.
47,48 PIN:DVI/YPRPB/PCMCIA selected input R/L.
50,51 PIN:Input of VGA. R/L
53,54 PIN:Input of AV2 R/L.
56,57 PIN:Input R/L of SVHS/AV1(SVHS priority)
67 PIN:Input TV SIF.

11

MONO

2.VPC3230

CrCb

Y OUT

Output

2D Scaler

Y

OUT

YCOE

FIFO

CNTL

Control

ITU-R 656

Formatter

PIP

ITU-R 601

Mode

Panorama

Cr

Memory

Contrast

Peaking

Brightness

Cb

H Sync

V Sync

LL Clock

+

Sync

Clock

AVO

Generation

C Bus20.25 MHz

2

I

C Bus

2

I

Clock

Gen.

Mixer

Y

Color

Adaptive

Analog

CIN

Pins description:
4 PIN: Input U of PCMCIA.
5,73 PIN: Input Y of PCMCIA.
6 PIN: Input V of PCMCIA
31-34, 37-40 PIN:output format signal of.ITU-R656
70 PIN:Video of AV OUT
71 PIN:Input C of SVHS.
72 PIN:input Video (SVHS in priority) of Y or AV1 of SVHS.
74 PIN:input Video of AV2.
75 PIN:input Video of TV.

Cr

NTSC

Decoder

Filter

Comb

Front-end

VIN1

VIN2

Cb

PA L

SECAM

NTSC

AGC

VIN3

Tint

Saturation

Y

PA L

Y/G

2 ADC

VIN4

VOUT

Cr

Cb

Matrix

Processing

Analog

Contrast

V/R

U/B

Front-End

Component

Tint

Saturation

Brightness

FB FB

4 x ADC

FB

RGB/

YCrCb

RGB/

YCrCb

12

3.Z86229

Addr B us

Row

1

CSEL

I

2

SDO
SDA
SCK

Serial

SEN

6 4 15 14 1613

SMS

VIN/

Intro

Data Line

VDD

+5V

Sliced

12

Status Reg

Control Port

Data Bus

FEW

Data CLK

Recove ry

AW

Data

Data

Slicer

Lock

Buffer

Processor

Command

Test Reg

VW

II Lock

Digital

PG

SIG

Slicer

SYNC

MUX

Address

10

4

Row

Latch

Display

6

DOT CLK

DOT CLK

DEC

ADDR

RAM

DIV

V Lock

COMP SYNC

ADDR

Decoder

RED

GREEN

Logic

Character

Generator

13

8

Latch

Display

FLD

CIR

CHAR

CW

CHAR CLK

OSCO/S

Output

4

SS CTR

Field

Line &

Control

LS

MSGR

FLD

SLS

SFLD

Control

IDrive

&MUX

BLUE
BOX

17 3 2 18

Z86229 only

CKT

POR

V/I

Ref

10

RREF

Line & Fld

Decodes

Vss(A)

11

Filter

Loop

9

LPF

Pin description:
7 PIN:Video input
2 PIN:G output
3 PIN:B output
18 PIN:R output
17 PIN:FB output

CG

Dual

Clamp

Slice Level

7

Video

8

CSYNC

CG Lines

Logic

PH1

MSYNC

FR

PH2

HIN

5

Figure 1. Z86229 Block Diagram

13

4.JAG-ASM

Panel clk

48

PIP

OVRLY

CLUT

GAMMA

OSD

OVERLAY

DITHER

ENGINE

DATA

STEER

PANEL

BE

FIFO

SYNC

SCALE

SCALE

SLOT 0

BE

FIFO

MEM

SCALE

SLOT 2

CTRL

PANEL

48

MEM

OSD

128

UNPACKER

MEM DIS

128

FIFO

64/48/32

SDRAM

48

VGA

MUX

VIDEO

PIX

VGA

DROP

VGA

FIFO

48

VGA

MUX

VIDEO

SMARTSET

SURE SYNC

SCALE

SLOT 1

PIX

VID

DROP

VID

FIFO

48

128

MEM

PACKER

MEM CAP

Memory clk

128

FIFO

Scaling clk

SDRAM INTERFACE

Figure 2. Functional Block Diagram

Vga half clk

VGA

CAPTURE

Video half clk

VID

CAPTURE

Mem clock

Panel clock

48

24

PLL 1

MICRO

INTERFACE

PLL 2

CONTROLLER

FE

24

PORT A

24

PORT B

Vga clk

Vid clk

16

PORT C

Ref clock

Micro Cont.

14

WIRING DIAGRAM

667-L22K9-53

667-L22K9-56

Analog board

X212

IR board

55

44

X204 X201

7

10

10

7

X213

10

10

667-L22K9-09

IR

PANEL INTERFACE

P4

CONTROL

P11

AUDIO

P37

VIDEO

P32

P6 P8

P41

PCMCIA card

BACKLIGHT

P29

POWER

P2

P39

CPU board

LCD panel

335-22001-00

P40

Keyboard

667-L22K9-05 667-L40D9-90

15

Components No.

Part Name Part No Main components and No Remark

Analog board assy’ 667-L22K9-53

CPU board assy’ 667-L22K9-56

Infra-red receive assy’ 667-L22K9-09

Push button board assy’ 667-L22K9-05

PCMCIA board assy’ 667-L40D9-90

Power supply conversion

AD-11C

Remote control set

RC-U19R-0A

Display screen

TM220WX- 71N31

302-AD11C-00

301-UL30K9-19RA

335-22001-00

N201 MSP3420G-Q (353-34200-10)
N203 M62494FP (353-62494-20)
N207 LX1722 (353-17220-30)
N205 N206 SI4532ADY
(353-45320-80)
N208 N210

U12 JAG-ASM (353-0JAG0-00)
U13 FLI2310 (353-23100-00)
U15 TFP403PZP (353-04030-10)
U29 VPC3230D (353-32300-80)
U30 MST9883B (353-98830-10)
U31 DS90C383A (353-03830-70)
U32 Z8622912SS (353-86229-10)
U2 TSC80251G2D
(353-80251-10)
U4 AT49F002NT
(352-49002-70)

Self produced

Self produced

Self produced
Self produced
Self produced

Self produced

16

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

Category criteria

One single

Bright

spo

t

Dark

spots

Total defected point ≤8 ≤7 ≤5 ≤4 /

Notes:

.1. Definition of defected point (bright spot, dark spot): It is identified as a defected point if its

2. Definition of bright spot: It is identified as a bright spot if it is bright in the state of dark field

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

spot

2 neighboring

spots

Total No. ≤5 ≤2 ≤5 ≤2 ≤3

One single

spot

Two

neighboring

spots

Total No. ≤6 ≤7 ≤5 ≤4 ≤10

area exceeds 1/2 of a single picture element (R,G,B).

and its bright size remains unchanged

its dark size remains unchanged

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

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

Q’ty allowed Distance between two spots

≥15mm

≥15mm

≥10mm

≥5mm

17

Trouble shooting gude

r

n

f

y

f

h

h

1. No grating

1.

Connect powe

2. yes

supply, check if the
red light is on whe

Blue

in stand-by?

No

Check the

output 13V o

Lamp off

No Yes

Yes

No Yes

No

power adapter

No

Check if the fuse of

power adapter is
blown out.

No No

Chang the

power adapter.

No

Check F1，F2
if they are
blown out?

Push key on the R/C set or push power ke

to put on the set, to check the status of
the indication lamp

No color
change

Change CPU

board

Push any key on R/C set, to
see if the indication lamp
twinkles.

Check 12th foot o
P29 is at high
voltage/?

Check 19th and ,20t
foot of P4 are at hig
electric level?

Check if F3 is blown
out?

18

2. There is grating but no picture

t

d

h

l

t

R

n

U

U

N

r

l

U

r

Z

n

y

U

t

Check If this se

can be operate

No

No
Has

有 No
Yes
No
has
否

No

No

No
has
has

has

by R/C or pus
key?

Enter factory adjustmen
menu ， execute CLEA

change
CPU
board

Calibrate CP
board again

Determine the

synchronization signa
of 65th foot of U30

EEPROM, after operatio
shut off and re-put on to
check if there is a picture?

No

Change U30

All channels
are withou

can No

pictures

Yes VGA/DVI

Screen display

O-SIGNAL

Determine the
signal of TP1，
TP2，TP3, the
should be 1VPP

Change 13

Change CP
board

Which channe
without picture?

YPrPb TV

Determine
modulate powe
supply +5V-V

Determine 1st foot of P32
if there is 1VPP signal o
noise wave?

Determine 56th foot of U29

if there is 15.734KH
line synchronizatio
signal?

Change U29

Change CP
board

Check FI on CP
board is melted

Change
TUNER 201

No

19

3. No sound (with TV input as an example)

g

No

No No

has

has

No

Check if R282

burns.

Check if TP2 is

tri-angle wave.

Change N207

Check the output

Yes has

wave form of foot 5
and 8 of N203

Check the output wave
form foot 27,and 28
of N201

No

Check the output wave
form of foot 67 of N201

No

Check the output wave
form of foot 11 of N201

Change TUNER201

Check the solderin
problem of N207

Change N203

Change N201

4. Examples of normal trouble fixing for LC-22K9

1. Indication lamp no light: R2, false soldering, X2, joint soldering, R2,R3,LED1 no good.

2. No power supply: F2, adapter no good.

3. No grating: V8 false soldering, or no good;P29,line of X1 no good.

4. No picture: X3, adapter no good.:

5. Abnormal background color cast: P4, no good

6. Vertical or (horizontal) line interfere: Screen, no good

7. Sound no good: line of FB20,P6 or speaker, no good.

8. Earphone no good: C275 copper foil broken

9. Remote control no good: X2 joint soldering: line of R2, X2 no good.

10. Function of push key abnormal: line of X1 no good.

20

EXPLODED VIEWS

21

Exploded views list

22

NO. Name NO. Name

21 connector cover

20 speaker box connector

19 speaker box front cabinet

18 speaker grille

17 acryl panel

16 speaker 37 rear cabinet cover(lower)

15 light indicator 36 rotate axis cover(back)

14 speaker box rear cabinet 35 rotate axis assy'

13 main board supporter assy' 34 column

12 metallic terminal panel(left) 33 stand upper cover

11 plastic terminal panel(left) 32 stand lower cover

10 PCMCIA card slot 31 rubber cushion

9 PCMCIA board 30 rear cabinet

8 PCMCIA card door 29 speaker box socket

7 PCMCIA bracket 28 shielding cover

6 button 27 main board

5 BUTTON panel 26 metallic terminal panel(right)

4 KEY supporter 25 plastic terminal panel(right)

3 rotate axis cover(back) 24 LCD panel

2 rear cabinet cover(upper) 23 remote sensor

1 rear cabinet cover 22 connector assy'

4321

203-L30K90-03

D

VCC33EVCCL

VCC33P

2 Ground are connected atboard layout thru a thicktrace

D

R24 0 OHM

12

CB2

0.1UF

CB3

0.1UF

CB4

0.1UF

CB5

0.1UF

12

CB6
10UF

CB7

0.1UF

CB8

0.1UF

CB9

0.1UF

12

CB10
10UF

CB11

0.1UF

12

CB12

place near powerconnector

10UF

C15

100UF

C

VCC33

CB26

0.1UF

CB13

0.1UF

CB27

0.1UF

ES60x8

CB14

0.1UF

CB15

0.1UF

CB29

0.1UF

CB16

0.1UF

CB30

0.1UF

CB17

0.1UF

CB18

0.1UF

CB32

0.1UF

CB19

0.1UF

VCCA VCC

L8
FERB

CB25

0.1UF

12

CB23
100UF

12

CB20

0.1UF

12

CB22
10UF

X2

1
2

Power

C

CB34
10UF

24C01

VCC

B

CB46

VCC33

CB36

0.1UF

CB37

0.1UF

CB38

0.1UF

SDRAM

CB39

0.1UF

VCC

CB40

0.1UF

0.1UF

No need to installEZ1085 circuitry ifJ12 provide +3.3V

VCC

12

CB48

A

1 2 3 4

0.1UF

CB50
OPEN(10UF)

VCCA

CB53

0.1UF

WM8706

12

CB54
10UF

CB55

0.1UF

12

CB56
10UF

3.3V REGUALTOR

N13 2830/3.3V

3

IN

拟制
复核

标准化

工艺
批准

1

OUT

ADJ

VCC33

2

12

FRONT

B

EZ1085

CB47

100UF

型号规格
编号

ADJ

PCMCIA

INP

OUT

A

782-L40D9-9000

23

第 张 共 张

厦门华侨电子企业有限公司XOCECO

26

87654321

203-L30K90-03D

D

V4

847

VS1#
VS2#
PC_CD1#
PC_CD2#

VCC

VCC

A[2..9]

R11

10K

R12
10K

VCC

N3A

1
2

74HCT32
N3B

4

5

74HCT32

N3C

9

10

74HCT32

C10

0.1UF

GND

N5A

2

A

3

B

1

G

74HCT139

N5B

14

A

13

B

15

G

74HCT139

VCC

C14

0.1UF

GND

2

HD[0..15] DD[0..15]

HD[0..15]

C

HA[0..2]

B

HA[0..2] DA[0..2]

HIORDY

HIOCS16#

HD0
HD1
HD2
HD3

HD4
HD5
HD6
HD7

HD8
HD9
HD10
HD11

HD12
HD13
HD14
HD15

HA0
HA1
HA2

HWR#

HWR#

HRD# DRD#

HRD#

HIORDY
HRST#

HRST#

HIRQ
HCS3#
HCS1#

LD[8..15]

VCC

HIRQ DIRQ
HCS3# DACS3#

HIOCS16# DIOCS16#

LD[8..15]

C12

0.1UF

GND

A

1 2 3 4 5 6 7 8

LCS2#

RST#

RRN1 47X4

RRN2 47X4

RRN3 47X4

RRN4 47X4

RRN5 47X4

RRN6 47X4

RRN7 47X4

LD15
LD14
LD13
LD12
LD11
LD10
LD9
LD8

LCS2#
RST#

DD0

18

DD1

27

DD2

36

DD3

45

DD4

18

DD5

27

DD6

36

DD7

45

DD8

18

DD9

27

DD10

36

DD11

45

DD12

18

DD13

27

DD14

36

DD15

45

DA0

18

DA1

27

DA2

36
45

DWR#

18
27

DIORDY

36
45

18
27

DACS1#HCS1#

36
45

N4

3

D1

4

D2

7

D3

8

D4

13

D5

14

D6

17

D7

18

D8

11

CLK

1

CLR

2

Q1

5

Q2

6

Q3

9

Q4

12

Q5

15

Q6

16

Q7

19

Q8

74F273

VCC

C11

DWR#

DACS1#

0.1UF

GND

VCC

C13

0.1UF R21 33 OHM

GND

PC_RST
PC_LOW#
PC_HI#
IO/MEM
CNTLA
CNTLB
CNTLC
CSB

VCC CB31

PC_HI#

DACS3#

PC_LOW#

DACS3#

IO/MEM
DACS3#

DRD#

DACS3#

DWR#

CNTLA
CNTLB
CNTLC
CSB

N11 1117/3.3V

IN3OUT

ADJ

1

DAC ML
DAC MC
DAC MD
WM8706 CSB

DD0
DD1
DD2

DD4
DD5
DD6 A8
DD7

WLAT

3

CE_H#

6

CE_L#

8

OE#

4

Y0
Y1
Y2
Y3

Y0
Y1
Y2
Y3

VCC

IORD#

5
6
7

WE/P#

12

IOWR#

11
10
9

12

C6
47UF

N2

3

D0

4

D1

7

D2

8

D3

13

D4

14

D5

17

D6

18

D7

1

OC

11

CLK

2

Q0

5

Q1

6

Q2

9

Q3

12

Q4

15

Q5

16

Q6

19

Q7

74HCT374

AUX2
AUX3
AUX6
AUX7

V1

FDN338P

A2
A3
A4
A5DD3
A6
A7

A9

DIRQ

R19 33 OHM
R20 33 OHM

R22 33 OHM

VCC33

PC_VCC

12

GND

R13

4.7K

C5
100UF

V2

FDN338P

12

47UF

0.1UF

C7

IO/MEM
0 = Memory Cycle, activate OE# and WE/P#
1 = I/O Cycle, activate IORD# and IOWR#

R29

4.7K

EAUX40

EAUX41

PC_VCC

GND

C8

0.1UF

R1

4.7K

VCC

VCC

VCC

R16

4.7K

PC_VCC

GND

R15

4.7K

R17

4.7K

VCC

拟制
复核

标准化

工艺
批准

C9

0.1UF

PC_VCC

VCC

VCC

R23

4.7K

R14

4.7K

R18

4.7K

DD11
DD12
DD13
DD14
DD15
CE_L#

OE#

A9
A8

WE/P#

PC_VCC

A7
A6
A5
A4
A3
A2
DA1
DA0
DD8
DD9
DD10

DIOCS16#

PHOTO_EN#

PC_CD1#
DD3
DD4
DD5
DD6
DD7
CE_H#
VS1#
IORD#
IOWR#

PC_VCC

VS2#

PC_RST

DIORDY

DACS3#

DD0
DD1
DD2
PC_CD2#

X4

1

GND1

2

D3

3

D4

4

D5

5

D6

6

D7

7

CE1

8

A10

9

OE

10

A11

11

A9

12

A8

13

A13

14

A14

15

WE/PGM

16

IREQ

17

VCC1

18

VPP1

19

A16

20

A15

21

A12

22

A7

23

A6

24

A5

25

A4

26

A3

27

A2

28

A1

29

A0

30

D0

31

D1

32

D2

33

IOIS16

34

GND

35

GND3

36

CD1

37

D11

38

D12

39

D13

40

D14

41

D15

42

CE2

43

VS1#/RFSH

44

IORD

45

IOWR

46

A17

47

A18

48

A19

49

A20

50

A21

51

VCC2

52

VPP2

53

A22

54

A23

55

A24

56

A25

57

VS2#/RFU

58

RESET

59

WAIT

60

INPACK

61

REG

62

SPKR

63

STSCHG

64

D8

65

D9

66

D10

67

CD2

68

GND4

PCMCIA

型号规格

PCMCIA

编号

782-L40D9-9000

第 张 共 张

22

厦门华侨电子企业有限公司XOCECO

26

D

C

B

A

4321

203-L30K90-03

LD[0..7]

LD[0..7]

N9

VCC33

D

LA16
LA15
LA14
LA13
LA12
LA11
LA9
LA8
WRLL#

LA7
LA6
LA5

C

LA4
LA3
LA2
LA1

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20

N6

A16
A15
A14
A13
A12
A11
A9
A8
W
NC
NC
NC
A18
A7
A6
A5
A4
A3
A2
A1

SST39VF080

A17

VSS

NC
A19
A10

D7

D6

D5

D4

VDD
VDD

NC

D3

D2

D1

D0

VSS

A0

40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24

G

23
22

E

21

LA17

LA19
LA10
LD7
LD6
LD5
LD4

LD3LA18
LD2
LD1
LD0
LOE#

LA0

8MBIT EPROM

4MBIT EPROM/FLASH

LD0
LD1
LD2
LD3
LD4
LD5
LD6
LD7

VCC

13

D0

14

D1

15

D2

17

D3

18

D4

19

D5

20

D6

21

D7

32

VCC

16

GND

OPEN 27C040/080-90

LD[0..7]

A0
A1
A2
A3
A4
A5
A6
A7
A8

A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19

CE

OE

12
11
10
9
8
7
6
5
27
26
23
25
4
28
29
3
2
30
31
1

22
24

LA0
LA1
LA2
LA3
LA4
LA5
LA6
LA7
LA8
LA9
LA10
LA11
LA12
LA13
LA14
LA15
LA16
LA17
LA18

LA19

LA[0..19]

LCS3#
LOE#

VCCA

D

C

LCS2#
LCS3#

2-CHANNEL AUDIO OUT

WOLFSON 2-CHANNEL AUDIODAC

R54 OPEN 0
R55 0 OHM

N1

RST#

WRLL#

VCCAVCCA

4-PIN EXTENSION FOR ROM EMULATOR INTERFACE

TP1 TP3

TP4

TP2

LA20

L_OUT

LA21

R34
15k

R36
33k

R35
1k

V7
847

L

C110UF

B

VCCA

CSB

CNTLA

CNTLB

CNTLC

TWS

MCLK

A

TBCK

TSD0

R3 33 OHM
R4 33 OHM
R5 33 OHM
R6 33 OHM

R7 33 OHM
R8 33 OHM
R9 33 OHM
R10 33 OHM

ML
MC
MD

TWS-

MCLK-

TBCK-

TSD0-

8

DVDD

7

DGND

23

CSB/WO

28

MLIIS

27

MCDM1

26

MDDM0

25

MUTEB

24

MODE

1

LRCIN

5

XTI

3

BCKIN

2

DIN

AVDD

VREFP

AGND

VREFN

VOUTL

VOUTR

ZERO

VMID

15
20

14
19

C16
10uF

16
13

C17

21

18

10uF

C3

0.1UF

L_OUT
R_OUT

ZERO

12

C4
10UF

VSYNC
HSYNC

UDAC

YDAC

CDAC

VSYNC
HSYNC

Y

Cb

IR_DATA

PHOTO_EN#

R

L

UDAC

YDAC

CDAC

X1

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

VCCA

R30
15k

R32
33k

R33
1k

R28
620

R_OUTCr

拟制
复核

V6
847

R

C210UF

型号规格
编号

标准化

WM8706

PORT

工艺

第 张 共 张

21

批准

1 2 3 4

5

R37
620

PCMCIA

782-L40D9-9000

26

厦门华侨电子企业有限公司XOCECO

B

A

87654321

203-L30K90-03D

CLK SOURCE

PLL3(pin41)

1

DCLK INPUT

0

VCC

WRLL#
WRHL#

LOE#

LA0
LA1
LA2
LA3
LA4
LA5
LA6
LA7
LA8
LA9
LA10
LA11
LA12
LA13
LA14
LA15
LA16
LA17
LA18
LA19

LD8
LD9
LD10
LD11
LD12
LD13
LD14
LD15

VD3
OPEN

(1N4148)

CRSTAL OSC

VCC

12

105

24

173
174
175
176

198
199

170

204
205
206
207

2
3
4
5
6

7
10
11
12
13
14
15
16
19
20
21
22
23

178
179
180
181
182
185
186
187
188
189
190
191
194
195
196
197

145
150
149
143
142
146
151
152
153
144

154
155
158

122
123
124
125
126
127
128
131
132
133
134
135
136
137
140
141

R43
OPEN

(10K)

EM-MARINRESET IC

VCC

N7

1

NC

2

LD[8..15]
HRST#

HRD#

HWR#

GND

3

NC

4

RES

5

VDD

V6300

27MHZ

RST#

LCS2#

LCS2#

LCS3#

LA[0..19]

LA20
LA21

LD0
LD1
LD2
LD3
LD4
LD5
LD6
LD7

LD[0..7]

LD[0..7]

LD[8..15]

HRST#

HRD#
HWR#

HIORDY

HIOCS16#

HCS1#
HCS3#

HIRQ

HD[0..15]

HD[0..15]

1 2 3 4 5 6 7 8

HA0
HA1
HA2

HCS1#
HCS3#
HIRQ

HD0
HD1
HD2
HD3
HD4
HD5
HD6
HD7
HD8
HD9
HD10
HD11
HD12
HD13
HD14
HD15

D

C

B

EAUX40
EAUX41

HA[0..2]

A

VCC

R41

4.7K

RST#

C21
OPEN

(47UF)Package: SOT-23 5L

25

28

29

30

31

CLK

RESET

LCS0
LCS1
LCS2
LCS3

LWRLL
LWRHL

LOE

LA0
LA1
LA2
LA3
LA4
LA5
LA6
LA7
LA8
LA9
LA10
LA11
LA12
LA13
LA14
LA15
LA16
LA17
LA18
LA19
LA20
LA21

LD0
LD1
LD2
LD3
LD4
LD5
LD6
LD7
LD8
LD9
LD10
LD11
LD12
LD13
LD14
LD15

HRST/EAUX3[5]
HRD/DCI_ACK/EAUX4[6]
HWR/DCI_CLK/EAUX4[5]
HRDQ/EAUX4[0]
HWRQ/DCI_REQ/EAUX4[1]
HIORDY/EAUX3[3]
HIOCS16/CAMPCLK/EAUX3[4]
HCS1FX/EAUX3[7]
HCS3FX/EAUX3[6]
HIRQ/DCI_ERR/EAUX4[7]

HA0/EAUX4[2]
HA1/EAUX4[3]
HA2/EAUX4[4]

HD0/DCI[0]/EAUX1[0]
HD1/DCI[1]/EAUX1[1]
HD2/DCI[2]/EAUX1[2]
HD3/DCI[3]/EAUX1[3]
HD4/DCI[4]/EAUX1[4]
HD5/DCI[5]/EAUX1[5]
HD6/DCI[6]/EAUX1[6]
HD7/DCI[7]/EAUX1[7]
HD8/DCI_FDS/EAUX2[0]
HD9/EAUX2[1]
HD10/EAUX2[2]
HD11/EAUX2[3]
HD12/EAUX2[4]
HD13/EAUX2[5]
HD14/EAUX2[6]
HD15/EAUX2[7]

TDMFS

TDMDR

TDMTSC

TDMDX/RSEL

NC/CAMVS

42

PLL2(pin32)

TDMCLK

ES6420

202

PLL1(pin36) PLL0(pin33)
0 114.75
0
0
0 101.25
1
1
1
1

CAMYUV0

203

0
0
1 270
1
0
0
1 94.5
1

VCC33P

L6
FERB

L7
FERB

51

AVCC(PLL)

AVCC(VDAC)

AVSS(VDAC)

112

1

18

27

VC33

VC33

VC33

VC3359VC3368VC3375VC3392VC33

AVSS(PLL)52VSS

8

111

CAMYUV1

VSS

MULTI

4.25

0

reserved

1

bypass

1

3.75

0

4.5
reserved

1

3.5

0
1

4

VCC33

VCC33VCC33E

99

104

130

148

VC33

VC33

VC33

VSS

VSS

VSS

VSS

VSS

17

26

34

43

60

67

157

76

159

VC33

VSS

84

164

VC33

VSS

91

VC33

VSS

Frequency

NA

121.5
NA

108

183

193

VC33

VSS

98

103

201

VC33

VSS

120

VC33

VSS

129

R27

1.2/1W

VSS

138

VSS

9

35

VC25

VSS

VSS

147

156

163

VCC33

R45

4.7K

VCCL

83

121

139

172

44

VC25

VC25

VC25

VC25

VC25

VC25

PCLKQSCN/CAMYUV5/AUX3[2]

HSSCN/CAMYUV7/EAUX3[0]
VSSCN/CAMYUV6/EAUX3[1]

VSS

VSS

VSS

VSS

VSS

VSS

171

177

184

192

200

208

VCC33

R38
OPEN

(4.7K)

R46

4.7K

N8
ES60x8

TWS/SEL_PLL2
TSD0/SEL_PLL0
TSD1/SEL_PLL1

SPDIF/SEL_PLL3

PCLK2XSCN/CAMYUV4

YUV0/CAMYUV2

YUV1/VREF
YUV2/CDAC
YUV3/COMP

YUV4/RSET
YUV5/YDAC
YUV6/VDAC

YUV7CAMYUV3

DBANK0/DRAS1
DBANK1/DRAS2

DSCK/DOE

DMA10
DMA11

NC/APLL

VSS

48

C36
150P

(150PF)

R39
OPEN

(4.7K)

R47

4.7K

MCLK

TBCK

TSD2
TSD3

RBCK

RWS

RSD

DCS0
DCS1

DRAS0

DCAS

DWE

DQM

DSCK

DMA0
DMA1
DMA2
DMA3
DMA4
DMA5
DMA6
DMA7
DMA8
DMA9

DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB8

DB9
DB10
DB11
DB12
DB13
DB14
DB15

AUX0
AUX1
AUX2
AUX3
AUX4
AUX5
AUX6
AUX7

XIN

XOUT

33 OHM

VCC33

R40
OPEN

(4.7K)

39
40

32
33
36
37
38

47
46
45

41

PCLK2X

116

PCLK

117

EAUX30

119

EAUX31

118

106
107
108
109
110
113
114
115

100
97
72
73
74
69
71
70
101

102

DMA0

53

DMA1

54

DMA2

55

DMA3

56

DMA4

57

DMA5

58

DMA6

61

DMA7

62

DMA8

63

DMA9

64

DMA10

65

DMA11

66

DB0

77

DB1

78

DB2

79

DB3

80

DB4

81

DB5

82

DB6

85

DB7

86

DB8

87

DB9

88

DB10

89

DB11

90

DB12

93

DB13

94

DB14

95

DB15

96

R71 33 OHM

160

R72 33 OHM

161

R73 33 OHM

162
165

AUX4

166
167
168
169

49

XOUT

50

R81

27MHZ

R48

4.7K

R56 33 OHM

R57 33 OHM

YUV0
YUV1/VREF
YUV2
YUV3
YUV4
YUV5

R65 33 OHM
R66 33 OHM

XIN

R77

100K
G1

12

27M

C33
27PF

ES6420F/FP

VDAC
YDAC Y
CDAC
UDAC

VCCV

CVBS&S-VIDEO

L1
FERB

R31 0 OHM

R49 33 OHM

HSYNC

VSYNC

TP5

RN1 33x4

1 8
2 7
3 6
4 5

RN2 12x4

1 8
2 7
3 6
4 5

RN312x4

1 8
2 7
3 6
4 5

RN412x4

1 8
2 7
3 6
4 5

VCC

VCC

R69

R70

4K7

4K7

AUX2
AUX3

AUX6
AUX7

L4

3.3UH

C34

C35

27PF

1000PF

CVBS&YUV

CV

C

VCC

C24
15P

(15PF)

HSYNC

VSYNC

C31 0.1UF

VREF

R59 270

R63 33 OHM

R67 68 OHM

MA0
MA1
MA2
MA3

MA4
MA5
MA6
MA7

MA8
MA9
MA10
MA11

VCC

8
7
6
5

VCC

N3D

11

74HCT32

RGB

CV

G

Y

PB R

B

PR

C25
22P

(22PF)

TWS
TSD0

VCC33E

C32

15PF

DB[0..15]

SERIAL EEPROM

N12

S0

VCC

S1

WC

S2

SCL

GND

SDA

24C01A

R76

4.7K

13

12

MCLK

TBCK

C28

0.1UF

CS0#

RAS0#

CAS#

WE#

BANK0
BANK1

1
2
3
4

ESS REMOTE INTERFACE

R78 33 OHM

R42
75 OHM

R50
75 OHM

R58
75 OHM

MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA9
MA10
MA11

CKE

DQMX

IR_DATA

L2 2.7UH

C19
470PF

L3 2.7UH

C22
470PF

L5 2.7UH

C29
470PF

N10

23

A0

24

A1

25

A2

26

A3

29

A4

30

A5

31

A6

32

A7

33

A8

34

A9

22

A10

35

A11

38

CLK

37

CKE

19

CS

18

RAS

17

CAS

16

WE

15

DQML

39

DQMH

20

BA0

21

BA1

36

NC

40

NC

4Mx16 SDRAM (9ns)

32/64MBIT SDRAM

拟制
复核

标准化

工艺
批准

C20
470PF

C23
470PF

C30
470PF

DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8

DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15

VCC
VCC
VCC

VCCQ
VCCQ
VCCQ
VCCQ

VSSQ
VSSQ
VSSQ
VSSQ

VSS
VSS
VSS

5

VDAC
YDAC
CDAC
UDAC

VCCV

VD4

1N6263

2 1

VD7

1N6263

2 1

VCCV

VD10

1N6263

2 1

VD12

1N6263

2 1

VCC33

DB0

2

DB1

4

DB2

5

DB3

7

DB4

8

DB5

10

DB6

11

DB7

13

DB8

42

DB9

44

DB10

45

DB11

47

DB12

48

DB13

50

DB14

51

DB15

53

1
14
27

3
9
43
49

6
12
46
52

28
41
54

型号规格
编号

第 张 共 张

20

VDAC
YDAC

VIDEO OUT

CDAC
UDAC

VCCV

VD5

1N6263

2 1

VD8

1N6263

2 1

CRITICAL TRACES

MOST

LEAST

CLOCKS

ADDRESS

CAS

WE

RAS

CSx

DQM

PCMCIA

782-L40D9-9000

厦门华侨电子企业有限公司XOCECO

26

D

C

B

A