Sanyo LCD- 22R35FHD Schematic

FILE NO.

SERVICE MANUAL

LCD TV

LCD-22R35FHD

PRODUCT CODE No.

PRODUCT CODE No.
1 682 350 81: PAL-BG

NTSC(AV)

REFERENCE No.:SM0915170

CONTENTS

Safety precautions………………………………………………………………………..…

Alignment instructions …………………………….…….…………………………………

Method of software upgrading instructions………………………………………………..

Working principle analysis of the unit……………………………….………….………….

Block diagram…………………………………..………………………………….…………

IC block diagram and instruction…………………………………………………………..……

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

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

Schematic diagram…………………………………………………………………………

APPENDIX-A: Main assembly list

APPENDIX-B: Exploded View

3

5

12

15

16

17

25

26

29

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

servicing please read the following points carefully.

Safety precautions

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 must 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 necessary for the welder to wear anti static gloves.
Please refer to the part list before replacing components that have special safety requirements.
Do not replace with different components with different specs and type at will.

2. LCD servicing precautions

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.
If the connection wires, connections or components fixed by the thermotropic glue need to
disengage when service, please soak the thermotropic glue into the alcohol and then pull them
out in case of dagmage.

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 Operation range 0 ~ +50 oC

Storage range -20 ~ +60 oC

Humidity Operation range 20% ~ 85%

Storage range 10% ~ 90%

2.13 Display of a fixed picture for a long time may cause a permanent after-image on the screen,
as commonly called “ghost shadow”. The degree of the after-image 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. Installation precautions

3.1 The front panel of LCD screen is made 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 instructions

2 Adjustment equipment

Digital multimeter
Signal generator (54200)
PC (presetting FLASH software)
VG848, VG849 (VGA, YPbPr and HDMI signal generator)
DVD player with HDMI output
White balance apparatus (CA210)
Monitor

3 Adjustment flow

3.1 Test voltage of power supply

According to wiring diagram ‘9222KC4201JL’, connect main board, power board, IR board and

key board correctly, switch on power supply, then press key ‘power’ to turn on the TV set.

a）Test voltage of socket X302 each pin in turn, please refer to voltage value as Table 3.

Table 3 Voltage of X302 each pin

X302 Pin1 2 3

3.3 V～5.0 V 1.0 V～3.3

Vol.

V

0

4、5 6、7

11.5 V～

12.5V

0

8 9 10 11 12 13

31 V～

33 V

4.7 V～5.3
V

0

4.7 V～

5.3 V

3.3 V～5.0

0

V

3.2 Adjustment flow chart as Fig.1

Connect to central signal source, check if each function of TV, such
as omitted program, analog parameter control, etc. is normal? Check
if output of earphones, speakers are normal?

Input AV/S-VIDEO signal, check if each function

Input HI definition signal (mode), check if each

Input VGA signal, check if display and each
function, such as analog parameters control, H/V
center, etc., are normal?

Input HDMI signal, check if display and each
function, such as analog parameters control, H/V

Insert U disk, check if functions of MP3 and JPEG

Check if FLASH has been burned

Product main board on line

General assembly and adjustment

White balance adjustment

of both channels are normal?

function of YPbPr is normal?

are normal?

Setting before leaving factory

Check accessories and packing

Fig. 1 Adjustment flow

4 Adjustment instruction

4.1 Unit adjustment

4.1.1 According to wiring diagram ‘9242KC4201JL’ , ‘9222KC4201JL’, ‘9219KC7201JL’ ,
‘9224KC7001J’ or ‘9232KC7001JL’, connect main board, power board, key board and IR board
correctly, switch on power supply, check if display is normal?

4.1.2 Instruction of factory menu
a）First press key ‘Program source’, then press number keys “2、5、8、0” in turn to enter initial

factory menu;

b）Press keys “” and “” to move cursor to each adjustment page of initial factory menu, then

press “” to enter into its adjustment menu;

c）Press keys “” and “” to move cursor upwards or downwards within any adjustment page;
d）Press keys “” and “” to adjust any item when cursor is moved onto it;
e）Press key “Menu” to exit to initial menu from any adjustment page;
f）Press key “Exit” to exit from factory menu in any case;
g）Set item “Aging Mode” as “On” to enter into factory aging mode.

4.2 White balance adjustment

4.2.1 Before adjustment
The unit should be working for above 30 minutes to be in stabler state; Use apparatus CA210 to

adjust white balance;

For model of which dimension is bigger than 26”, only 9300K color temperature (that is “normal”)
is needed adjustment, To guarantee BBY test requirements to be met when color temperature are
12000K and 6500K, make sure that chromaticity coordinates of bright scale are (X=285±5, Y=293±8)
and chromaticity coordinates of dark scale are (X=285±8, Y=293±12);

For model of which dimension is 26” or smaller than 26”, only 8000K color temperature (that is
“normal”) is needed adjustment, To guarantee test requirements to be met when color temperature
are 9300K and 6500K, make sure that chromaticity coordinates of bright scale are X=295±5,
Y=305±8) and chromaticity coordinates of dark scale are (X=295±8, Y=305±12);

4.2.2 White balance adjustment of HDMI channel

Input 16-grey-scale signal with format of 800×600/60 Hz (VG848: Timing is 854，PAT is 921),

enter into submenu “color temperature adjustment” of factory menu;

For model of which dimension is bigger than 26”, select “normal” color temperature (that is

rd

9300K), fix item “G Offset”, adjust items “R Offset, B Offset” to set chromaticity coordinates of the 3
scale as （285±8, 293±12）and guarantee luminance within the range of 3 nit to 5 nit; fix item “G
GAIN”, adjust items “R GAIN, B GAIN” to set chromaticity coordinates of the reverse 3

rd

scale as
（285±8, 293±12）; adjust items “R Offset, B Offset” and “R GAIN, B GAIN” repeatedly until
chromaticity coordinates of both scales are all （285, 293）;

For model of which dimension is 26” and small than 26”, select “normal” color temperature (that is

rd

8000K), fix item “G Offset”, adjust items “R Offset, B Offset” to set chromaticity coordinates of the 3
scale as （295±8, 305±12）and guarantee luminance within the range of 3 nit to 5 nit; fix item “G
GAIN”, adjust items “R GAIN, B GAIN” to set chromaticity coordinates of the reverse 3

rd

scale as
（295±5, 305±8） ; adjust items “R Offset, B Offset” and “R GAIN, B GAIN” repeatedly until
chromaticity coordinates of both scales are all （295, 305）;

Set item “ALL COLOR” as “ON” after completing adjustment.

4.2.3 White balance adjustment of YPbPr channel

ADC calibration of SD mode: Input color-bar signal with format of 480i/60 Hz (VG848: Timing is
968，PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO
COLOR”, system will begin calibration automatically, please note whether picture and data are
abnormal clearly or not (main abnormal data phenomena are that several data are very different from
the other or about 1000 more than the other); it is failed to calibrate ADC if data are abnormal clearly,
so it is necessary to do the calibration again;

ADC calibration of HD mode: Input color-bar signal with format of 1080i/60 Hz (VG848: Timing is
972，PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO
COLOR”, system will begin calibration automatically, please note whether picture and data are
abnormal clearly or not (main abnormal data phenomena are that several data are very different from
the other or about 1000 more than the other); it is failed to calibrate ADC if data are abnormal clearly,
so it is necessary to do the calibration again;

White balance adjustment: Input 16-grey-scale signal with format of 1080i/60 Hz (VG848: Timing
is 972，PAT is 921), check if white balance is normal, if not, enter into submenu “color temperature
adjustment” of factory menu, set item “ALL COLOR” as “OFF”, please refer to step 4.2.2 to adjust
white balance for model of which dimension is 26” , bigger than 26” or smaller than 26” respectively;

Note: Item “ALL COLOR” must not be altered as “ON” again once set as “OFF”.

4.2.4 White balance adjustment of VGA channel
Auto-calibration: Input square signal with format of 800×600/60 Hz (VG848: Timing is 854，PAT is
CROSS) to do calibration automatically in order to make window filled with picture;

ADC calibration: Input monochrome signal with format of 800×600/60 Hz (VG848: Timing is 854，
PAT is 948), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”,
system will begin calibration automatically, please note whether picture and data are abnormal clearly
or not (main abnormal data phenomena are that several data are very different from the other or
about 1000 more than the other); it is failed to calibrate ADC if data are abnormal clearly, so it is
necessary to do the calibration again;

White balance adjustment: Input 16-grey-scale signal with format of 800×600/60 Hz (VG848:
Timing is 854，PAT is 921), check if white balance is normal, if not, enter into submenu “color
temperature adjustment” of factory menu, set item “ALL COLOR” as “OFF”, please refer to step 4.2.2
to adjust white balance for model of which dimension is 26” , bigger than 26” or smaller than 26”
respectively;

Note: Item “ALL COLOR” must not be altered as “ON” again once set as “OFF”.

4.2.5 White balance adjustment of AV channel

Input 16-grey-scale signal with format of PAL (VG848: Timing is 969，PAT is 921), check if white
balance is normal, if not, enter into submenu “color temperature adjustment” of factory menu, set item
“ALL COLOR” as “OFF”, please refer to step 4.2.2 to adjust white balance for model of which
dimension is 26” , bigger than 26” or smaller than 26” respectively;

Note: Item “ALL COLOR” must not be altered as “ON” again once set as “OFF”.

4.2.6 Auto-white balance adjustment

4.2.6.1 ADC pre-calibration

Enter into factory menu, set “Program source” as “YPbPr”, input color-bar signal with format of
480i/60 Hz (VG848: Timing is 968，PAT is 918), enter into submenu “ADC adjustment” of factory
menu and select item “AUTO COLOR”, system will begin calibration automatically; input color-bar
signal with format of 1080i/60 Hz (VG848: Timing is 972，PAT is 918), enter into submenu “ADC

adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration
automatically,

Press key “Menu” to be back to upper menu, set “Program source” as VGA”, input monochrome
signal with format of 800×600/60 Hz (VG848: Timing is 854，PAT is 948), enter into submenu “ADC
adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration
automatically,

4.2.6.2 White balance adjustment (models except LC-19KC72, LC-22KC72)

TV set should be working for above 30 minutes to be in stabler state before white balance
adjustment; connect CA210 to USB port of PC with data line; connect VG848 and TV to COM port of
PC or virtual COM port respectively (default connection: VG848 to COM5,TV to COM1, the
connection can be altered and saved in administrator window with password “xoceco” if necessary);
output signal of VG848 must be sent to AV1, YPbPr, VGA and HDMI1 channels of TV;

Open program file “White_Balance.exe”, load configure file “AdjustConfig.txt”, then connect
CA210, VG848 and TV respectively according to the instruction on interface.
Note: set probe to “0-CAL” before connecting CA210, press “connect CA210”, set probe back to
“MEAS” after prompt “CA-210 connection and calibration are normal !” appears on the left-down side;
BBY channel is used by CA210 for BBY models, for other models, channels except BBY are used by
CA210; please enter into administer window with password “xoceco” to alter and save apparatus
setting if it is different;
At last, press “Begin auto-white-balance-adjustment”, auto-adjustment will be completed until
prompt “Adjustment is successful” appears.

4.2.6.3 White balance adjustment (models except LC-19KC72, LC-22KC72)

TV set should be working for above 30 minutes to be in stabler state before white balance
adjustment; connect CA210 to USB port of PC with data line; connect VG848 and TV to COM port of
PC or virtual COM port respectively (default connection: VG848 to COM5,TV to COM1, the
connection can be altered and saved in administrator window with password “xoceco” if necessary);
output signal of VG848 must be sent to AV1, YPbPr, VGA and HDMI1 channels of TV;
Note: Channel shared by AV/YPBPR must be adjusted respectively.

Open program file “White_Balance.exe”, if current working progress includes AV channel, enter
into channel setting of administer window to make sure no YPBPR576i@60 but AV is chosen, or load
configure file “AdjustConfigAV.txt”; if current working progress includes YPBPR channel, enter into
channel setting of administer window to make sure no AV but YPBPR576i@60 is chosen, or load
configure file “AdjustConfigYPBPR.txt.txt”; then connect CA210, VG848 and TV respectively
according to the instruction on interface.
Note: set probe to “0-CAL” before connecting CA210, press “connect CA210”, set probe back to
“MEAS” after prompt “CA-210 connection and calibration are normal !” appears on the left-down side;
BBY channel is used by CA210 for BBY models, for other models, channels except BBY are used by
CA210; please enter into administer window with password “xoceco” to alter and save apparatus
setting if it is different;
At last, press “Begin auto-white-balance-adjustment”, auto-adjustment will be completed until
prompt “Adjustment is successful” appears.

5 Performance check

5.1 TV port

Connect RF port to central signal source, first enter into channel menu, then auto search
programs, check if there is any omitted program ,output of speakers and picture are normal

5.2 AV/S-Video port

Input AV/S signal to corresponding terminal respectively, check if picture and sound are normal.

5.3 YPbPr/YCbCr port

Input YUV signal from signal general VG848 with YUV format listed as Table 8, check if picture
and sound are normal.

Table 8 YUV signal format

NO. Definition

1 720×480i@59.94/60 Hz 15.734 59.94/60 13.5 480i(59.94/60p)
2 720×480p@59.94/60 Hz 31.469 59.94/60 27.00 480p(59.94/60p)

3 1280×720p@59.94/60 Hz 44.96 59.94/60 74.18 720p(59.94/60p)
4 1920×1080i@59.94/60 Hz 33.75 59.94 74.25 1080i(59.94/60i)
5 1920×1080p@23.98/24 Hz 27.00 23.98/24 74.25 1080p(23.98/24p)

6 1920×1080p@59.94/60 Hz 67.50 59.94/60 148.50 1080p(59.94/60p)

H. Fre.

kHz

V. Fre.

Hz

Dot-pulse Fre.

MHz

Note

5.4 VGA port

Input VGA signal from signal general VG848 with VGA format listed as Table 9, check if picture
and sound are normal, if not, enter into menu to do auto-calibration.

Table 9 VGA signal format

NO. Definition

1 720×400@70 Hz 31.47 70.08 28.32 DOS
2 640×480@60 Hz 31.50 60.00 25.18 VESA
3 800×600@60 Hz 37.90 60.00 40.00 VESA

4 1024×768@60 Hz 48.40 60.00 65.00 VESA

1280×1024@60 Hz 63.98 60.02 108.00 VESA

5

1360×768@60 Hz 47.71 60.01 85.50 VESA

6

1920×1080@60 Hz 67.16 59.96 173.00 VESA

7

H. Fre.

kHz

V. Fre.

Hz

Dot-pulse Fre.

MHz

Note

(only for Full HD panel)

(only for 1366X768 panel)

(only for Full HD panel)

5.5 HDMI port

Input HDMIsignal from signal general VG849 with VGA format listed as Table 8&9 , check if
picture and sound are normal

5.6 USB port
Inset U disk, check if JPEG picture and MP3 music are displayed normally

5.7 AV OUT port

Check if picture and sound of AV OUT are normal

5.8 Check other functions

Check if time-on/off, sleeping time, picture/sound mode, OSD, still picture/mute and
microcrystalline-magical-picture, etc., are normal.

6 User menu setting before leaving factory

Enter into factory menu, select item ‘Reset’, TV set will be preset automatically before leaving

factory. Be sure to do the step after completing adjustments in factory.

7 Instruction for software burning in factory as Table 10

Table 10 Instruction for software burning in factory

Loc. Part No. Part Type

N104 5272532004 W25X32VSS

Instruction for

software function

Main CPU

program

Burned before

SMT

Yes Burned software with ALL11

Method of burning

Instruction of software upgrade

Instruction of software upgrade for KC# model:

1. Save upgrade file “flash.img” into the root directory of a U disk;

2. Insert the U disk into USB port of TV set, press key “power” until TV set is in
“standby” state, then power on TV set again;

3. Press key “program source” until menu “program source” display, then
press keys “2”, “5”, “8”, “0” by turn to enter into factory menu, please refer to
the following Fig. 1;

Fig. 1 “Program source” menu

Fig. 2 Factory menu

4. Press keys of remote control “▲”,”▼” to select item “ISP”, press key “enter”

to begin updating progress, a prompt “Updating, Pls, Waiting…” is
displaying, wait for a while until menu display (TV set is unable to accept
other operation now), please refer to the Fig. 3;

Fig. 3 Updating prompt

5. TV set will auto-reset after completing update, according to step1 and step

2, enter into factory menu again to confirm updating completion by
checking the time of update file.

Working principle analysis of the unit

RF signal from antenna is sent into TUNER301 to be processed by HF-amplified and
frequency mixing, then IF signal is outputted to SWF Z301 to be IF filtered to get ideal IF
characteristics, then the signal is sent to main chip N101(RTD2674S)-27#,28# to be
amplified by inline IF amplifier and synchronous demodulated to get CVBS.

Video and audio signal from AV, S-VIDEO , YPbPr, VGA , HDMI are sent to main chip
N101(RTD2674S) directly.
Main chip N101(RTD2674S) is a special large scale IC with full functions, such as HDMI
interface process, video decoding, video switch selection, A/D and D/A transformation,
interleaved/successive scans, mode transformation, OSD and low-voltage difference
output process, etc.; furthermore, it also has functions of audio selection and process,
MCU, etc.; external video signal is processed by main chip N101(RTD2674S), then 4
pairs of difference signals and one pair of clock signals are outputted to LCD to display;
external audio signal processed by main chip N101(RTD2674S) is sent to sound amplifier
N308(TDA7266SA) to be amplified and then to speakers.

Block Diagram

TUNER

AV

YPbPr

VGA

VGA

AUDIO

IF

CVBS

YPbPR

RGB

L/R

DDR

EM6AA160TS-

4G

RTD2674S

SPI FLASH

W25X32VSSIG-E

IC

LVDS

PANEL

SPEAKER

AMP

TDA7266SA

HP

HDMI

USB

TMDS

D+/D-

AUDIO

VIDEO

IC block diagram

RTD2674S

Ｍａｉｎ　ＩＣ

Pin List

217

U2

1

VCM_BB

2

AVDD_BB0_3.3V

3

AIN_5L/LSADC6

4

AIO_2R

5

AIO_2L

6

AIO_1R

7

AIO_1L

8

AIN_4R

9

AIN_4L

10

AIN_3R

11

AIN_3L

12

AIN_2R

13

AIN_2L

14

AIN_1R

15

AIN_1L

16

AOUT_R

17

AOUT_L

18

HPOUT_R

19

HPOUT_L

20

SCART_FSW_0

21

SCART_FSW_1

22

DAC_VDD_3.3V

23

AVOUT_1

24

AVOUT_2

25

DAC_GND

26

ADC2X_GND_3.3V

27

IF_N

28

IF_P

29

ADC2X_VDD

30

PLL_GND

31

XI N

32

XO U T

33

PLL_VDD_3.3V

34

CORE_1.2V

35

USB_AVDD_3.3V

36

HSDM

37

HSDP

38

USB_AVDD_1.2V

39

I2C0_SCL

40

I2C0_SDA

41

IO_3.3V

42

GPIO_A0/RF_AGC

43

GPIO_A1/IF_AGC

44

CORE_1.2V

45

O_FP

46

O_FN

47

O_EP

48

O_EN

49

O_DP

50

O_DN

51

O_CP

52

O_CN

53

O_BP

54

O_BN

E-PAD

213

215

216

214

VIN_A2N

AGND_BB1

(CVBS)VIN_14P

AVDD_BB1_3. 3V

212

211

(CVBS/SV-C)VIN_13P

(CVBS/SV-Y)VIN_10P

209

VIN_A1N

208

(SV-C)VIN_12P

(SV-Y)VIN_9P

206

VIN_A0N

VD_GND

VD_VDD_1.2V

(SV-C/FSC_CVBS)VIN_11P

204

205

207

210

199

196

200

201

202

203

VIN_Y1N

ADC_VDD_1.2V

(FSC_R/Y)VIN _8P

(FSC_G/Pr)VIN_7P

(FSC_B/Pb)VIN_6P

194

195

198

(Pr)VIN_5P

193

197

VIN_2N

VIN_Y0N

(Y)VIN_4P

(Pb)VIN_3P

(VGA_R)VIN_2P

RTD2674
LQFP-216
E-PAD

188

190

192

191

VIN1_N

(VGA_B)VIN_1P

189

VIN_0N

(VGA_G)VIN_0P

186

187

VSYNC

VD_VDD_3.3V

ADC_VDD_3.3V

181

185

HSYNC

180

182

183

184

APLL_GND

TMDS_1.2V

TMDS_REXT

APLL_VDD_3. 3V

P0_RX0P/HDMI _2P_0

175

177

179

178

P0_RX1P/HDMI _1P_0

P0_RX1N/HDMI_1N_0

P0_RX0N/HDMI_2N_0

176

P0_RX2P/HDMI _0P_0

P0_RX2N/HDMI_0N_0

174

173

P0_RX3P/HDMI _CLKP_0

P0_RX3N/HDMI_CLKN_0

172

P1_RX0P/HDMI _2P_1

167

169

171

168

170

P1_RX2P/HDMI _0P_1

P1_RX1P/HDMI _1P_1

P1_RX1N/HDMI_1N_1

P1_RX0N/HDMI_2N_1

163

164

165

166

TMDS_1.2V

TMDS_3.3V

HDDC0_SCL
HDDC0_SDA

P1_RX2N/HDMI_0N_1

HDDC1_SCL

P1_RX3P/HDMI _CLKP_1

P1_RX3N/HDMI_CLKN_1

HDDC1_SDA

VGA_DDC_SCL

VGA_DDC_SDA

IO_3.3V
GPIO_C8
GPIO_C6
GPIO_C5

STBY_CORE_1.2V

SPI_D O
SPI_SCK

SPI_CS_N
RESET_IN

GPIO_C4
GPIO_C3
GPIO_C2
GPIO_C1
GPIO_C0

STBY_CORE_1.2V

LSADC4/GPIO
LSADC2/GPIO
LSADC1/GPIO
LSADC0/GPIO

LSADC_REF

IO_3.3V

CORE_1. 2V

DDR_IO_2.5V

DDR_VREF

DDR_IO_2.5V

DDR_IO_2.5V

ADDR12
ADDR11

CEC

SPI_DI

DQS1

DQ_8
DQ_9

DQ_10
DQ_11
DQ_12
DQ_13
DQ_14
DQ_15

DM1

CK#

CK

CKE

ADDR9
ADDR8
ADDR7
ADDR6
ADDR5

162
161
160
159
158
157
156
155
154
153
152
151
150
149
148
147
146
145
144
143
142
141
140
139
138
137
136
135
134
133
132
131
130
129
128
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
109

QFP216E

O_AP55O_AN56IO_3.3V57E_FP58E_FN59E_EP60E_EN61E_DP62E_DN63E_CP64E_CN65E_BP66E_BN67E_AP68E_AN69CORE_1. 2V70TCON/GPIO_B071TCON/GPIO_B272TCON/GPIO_B373TCON/GPIO_B474TCON/GPIO_B575TCON/GPIO_B676TCON/GPIO_B777TCON/GPIO_B878IO_3.3V79TCON/GPIO_B980TCON/GPIO_B1081TCON/GPIO_B1282CORE_1. 2V83DQS084DQ_785DQ_686DDR_IO_2.5V87DQ_588DQ_489DQ_390DQ_291DQ_192DQ_093DDR_IO_2.5V94DM095WE#96CAS#97RAS#98CORE_1. 2V99BA0

100

101

BA1

102

ADDR10

103

ADDR0

ADDR1

104

105

ADDR2

ADDR3

106

107

DDR_IO_2.5V

108

ADDR4

Ｍａｉｎ　ＩＣ

RTD2674S

Table 1-1. RTD2674S Pin Assignments – Pin detail description

(I/O Legend: A = Analog, I = Input, O = Output, P = Power, G = Ground)

Pin No Pin Name Type Description Note

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

34
35
36
37
38

39
40

VCM_BB AP Analog Audio Common Voltage Reference

AVDD_BB0 AP Analog Baseband Power 3.3V

AIN_5L/LSADC6 AI Low Speed ADC input 6

AIO_2R AIO Analog Audio input/output 2 (Right Channe l)
AIO_2L AIO Analog Audio input/output 2 (Left Channel)
AIO_1R AIO Analog Audio input/output 1 (Right Channe l)
AIO_1L AIO Analog Audio input/output 1 (Left Channel)
AIN_4R AI Analog Audio input 4 (Right Channel)

AIN_4L AI Analog Audio input 4 (Left Channel)

AIN_3R AI Analog Audio input 3 (Right Channel)

AIN_3L AI Analog Audio input 3 (Left Channel)

AIN_2R AI Analog Audio input 2 (Right Channel)

AIN_2L AI Analog Audio input 2 (Left Channel)

AIN_1R AI Analog Audio input 1 (Right Channel)

AIN_1L AI Analog Audio input 1 (Left Channel)
AOUT_R AO Analog Baseband Audio Out (Right Channel)
AOUT_L AO Analog Baseband Audio Out (Left Channel)

HPOUT_R AO Head Phone DAC output (Right Channel)

HPOUT_L AO Head Phone DAC output (Left Channel)
Scart_FSW_0 AIO SCART RGB Fast Switch Input 0
Scart_FSW_1 AIO SCART RGB Fast Switch Input 1

DAC_VDD_0 AP Video DAC Power 3.3V

AVOUT_1 AP CVBS DAC output1

AVOUT_2 AP CVBS DAC output2

DAC_GND_0 AP Video DAC GND

ADC2X_GND_1 AP IFADC GND

IF_N AP IF demod Negative input
IF_P AP IF demod Postive input

ADC2X_VDD_0 AP IFADC power 3.3V

PLL_GND_1 AP XTAL PLL GND

XIN AP 27MHz Crystal Input

XOUT AP 27MHz Crystal Output

PLL_VDD_0 AP XTAL PLL power 3.3V

Core_1.2V DP Core Power 1.2V

AVDD_1 AP USB Power 3.3V

HSDM_1 AP USB HOST0 Data Negative

HSDP_1 AP USB HOST0 Data Postive

LV_USB_1 AP USB Power 1.2V

I2C0_SCL DIO Tuner I2C clock

I2C0_SDA DIO Tuner I2C data

Connect 1uF to GND
Analog 3.3V

Analog 3.3V

Analog 3.3V

Analog 3.3V
Digital 1.2V, Power Down@

Power saving
Analog 3.3V

Analog 1.2V

5V tolerance even when
power-off
5V tolerance even when
power-off

Ｍａｉｎ　ＩＣ

RTD2674S

41
42
43

44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69

70
71
72
73
74
75
76
77
78

79

VCC3_0 P PAD I/O Power 3.3V
GPIO_A0 DIO GPIO_A0
GPIO_A1 DIO GPIO_A1

Core_1.2V P Core Power 1.2V

B_FP AO LVDS_Port_B_F_Pair_P
B_FN AO LVDS_Port_B_F_Pair_N
B_EP AO LVDS_Port_B_E_Pair_P
B_EN AO LVDS_Port_B_E_Pair_N
B_DP AO LVDS_Port_B_D_Pair_P

B_DN AO LVDS_Port_B_D_Pair_N

B_CP AO LVDS_Port_B_C_Pair_P
B_CN AO LVDS_Port_B_C_Pair_N
B_BP AO LVDS_Port_B_B_Pair_P
B_BN AO LVDS_Port_B_B_Pair_N
B_AP AO LVDS_Port_B_A_Pair_P
B_AN AO LVDS_Port_B_A_Pair_N

LVDSV P LVDS Power 3.3V

A_FP AO LVDS_Port_A_F_Pair_P
A_FN AO LVDS_Port_A_F_Pair_N
A_EP AO LVDS_Port_A_E_Pair_P
A_EN AO LVDS_Port_A_E_Pair_N
A_DP AO LVDS_Port_A_D_Pair_P

A_DN AO LVDS_Port_A_D_Pair_N

A_CP AO LVDS_Port_A_C_Pair_P
A_CN AO LVDS_Port_A_C_Pair_N
A_BP AO LVDS_Port_A_B_Pair_P
A_BN AO LVDS_Port_A_B_Pair_N
A_AP AO LVDS_Port_A_A_Pair_P
A_AN AO LVDS_Port_A_A_Pair_N

Core_1.2V P Core Power 1.2V

GPIO_B0 DIO GPIO_B0
GPIO_B2 DIO GPIO_B2
GPIO_B3 DIO GPIO_B3
GPIO_B4 DIO GPIO_B4
GPIO_B5 DIO GPIO_B5
GPIO_B6 DIO GPIO_B6
GPIO_B7 DIO GPIO_B7
GPIO_B8 DIO GPIO_B8

VCC3_2 P PAD I/O Power 3.3V

Digital I/O 3.3V

5V tolerance even when
power-off
5V tolerance even when
power-off

Digital 1.2V, Power Down@
Power saving

Digital 1.2V, Power Down@
Power saving

5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off

Ｍａｉｎ　ＩＣ

80
81
82

83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98

99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122

RTD2674S

GPIO_B9 DIO GPIO_B9
GPIO_B10 DIO GPIO_B10
GPIO_B12 DIO GPIO_B12

Core_1.2V P Core Power 1.2V

DQS0 DO DDR_DQS0
DQ_7 DIO DDR_Data7
DQ_6 DIO DDR_Data6

SVCC25 P DDR I/O Power 2.5V

DQ_5 DIO DDR_Data5
DQ_4 DIO DDR_Data4
DQ_3 DIO DDR_Data3
DQ_2 DIO DDR_Data2
DQ_1 DIO DDR_Data1
DQ_0 DIO DDR_Data0

SVCC25 P DDR I/O Power 2.5V

DM0 DO DDR_Data_Mask0

WE# DO DDR Write Enable (Low Enable)
CAS# DO DDR CAS (Low Enable)
RAS# DO DDR RAS (Low Enable)

Core_1.2V P Core Power 1.2V

BA0 DO DDR Bank Address0
BA1 DO DDR Bank Address1

ADDR10 DO DDR Address10

ADDR0 DO DDR Address0
ADDR1 DO DDR Address1
ADDR2 DO DDR Address2
ADDR3 DO DDR Address3

SVCC25 P DDR I/O Power 2.5V

ADDR4 DO DDR Address4
ADDR5 DO DDR Address5
ADDR6 DO DDR Address6
ADDR7 DO DDR Address7
ADDR8 DO DDR Address8

ADDR9 DO DDR Address9
ADDR11 DO DDR Address11
ADDR12 DO DDR Address12

CKE DO DDR Clock Enable

SVCC25 P DDR I/O Power 2.5V

CK DO DDR Clock Differential(+)

CK# DO DDR Clock Differential(-)

DM1 DO DDR Data Mask1

SVCC25 P DDR I/O Power 2.5V

VREF AI DDR Reference Voltage Input

5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off

Digital 1.2V, Power Down@
Power saving

Digital 1.2V, Power Down@
Power saving

1.25V Ref input

Ｍａｉｎ　ＩＣ

RTD2674S

123
124
125
126
127
128
129
130
131
132

133
134
135
136
137
138
139

140
141
142
143
144
145

146
147
148
149
150

151
152
153
154

155
156
157
158
159

DQ_15 DIO DDR_Data15
DQ_14 DIO DDR_Data14
DQ_13 DIO DDR_Data13
DQ_12 DIO DDR_Data12
DQ_11 DIO DDR_Data11
DQ_10 DIO DDR_Data10

SVCC25 P DDR I/O Power 2.5V

DQ_9 DIO DDR_Data9
DQ_8 DIO DDR_Data8
DQS1 DO DDR_DQS1

Core_1.2V P Core Power 1.2V

V33_IO P PAD I/O Power 3.3V

lsadc_ref AI LSADC reference

lsadc0 AI LSADC0
lsadc1 AI LSADC1
lsadc2 AI LSADC2
lsadc4 AI LSADC4

STBY_Core_1.2V P Standby ON Core Power 1.2V

GPIO_C0 DIO GPIO_C0
GPIO_C1 DIO GPIO_C1
GPIO_C2 DIO GPIO_C2
GPIO_C3 DIO GPIO_C3
GPIO_C4 DIO GPIO_C4

RSTI DI Chip Reset Input

SPI_CSn DO SPI Flash CS Output

SPI_SCLK DO SPI Flash Clock Output

SPI_SDO DO SPI Flash Data Output

SPI_SDI DI SPI Flash Data Input

STBY_Core_1.2V P Standby ON Core Power 1.2V

GPIO_C5 DIO GPIO_C5
GPIO_C6 DIO GPIO_C6
GPIO_C8 DIO GPIO_C8

VCC3_4 P PAD I/O Power 3.3V

VDDC_SDA DIO VGA DDC Data

VDDC_SCL DIO VGA DDC Clock
HDDC1_SDA DIO HDMI DDC Data 1
HDDC1_SCL DIO HDMI DDC Clock 1

Digital 1.2V, Power Down@
Power saving

Connect 10K to GND

Digital 1.2V, Always On@
Power saving

5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off

Low Active

Digital 1.2V, Always On@
Power saving

5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off

5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off

Ｍａｉｎ　ＩＣ

160
161
162

163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203

RTD2674S

HDDC0_SDA DIO HDMI DDC Data 0
HDDC0_SCL DIO HDMI DDC Clock 0

CEC DIO HDMI CEC function
RX_V12 AP HDMI GDI Power 1.2V
RX_V33 AP HDMI GDI Power 3.3V

HDMI_1_CLKN AI HDMI_RX_Port1_CLK_Pair_Negative

HDMI_1_CLKP AI HDMI_RX_Port1_CLK_Pair_Positive

HDMI_1_0N AI HDMI_RX_Port1_Pair0_Negative

HDMI_1_0P AI HDMI_RX_Port1_Pair0_Positive

HDMI_1_1N AI HDMI_RX_Port1_Pair1_Negative

HDMI_1_1P AI HDMI_RX_Port1_Pair1_Positive

HDMI_1_2N AI HDMI_RX_Port1_Pair2_Negative

HDMI_1_2P AI HDMI_RX_Port1_Pair2_Positive

HDMI_0_CLKN AI HDMI_RX_Port0_CLK_Pair_Negative

HDMI_0_CLKP AI HDMI_RX_Port0_CLK_Pair_Positive

HDMI_0_0N AI HDMI_RX_Port0_Pair0_Negative

HDMI_0_0P AI HDMI_RX_Port0_Pair0_Positive

HDMI_0_1N AI HDMI_RX_Port0_Pair1_Negative

HDMI_0_1P AI HDMI_RX_Port0_Pair1_Positive

HDMI_0_2N AI HDMI_RX_Port0_Pair2_Negative

HDMI_0_2P AI HDMI_RX_Port0_Pair2_Positive

TMDS_REXT AI TMDS External Resistor Input

RX_V12 AP HDMI GDI Power 1.2V

APLL_VDD AP APLL Power 3.3V
APLL_GND AP APLL GND

HSYNC AI Hsync input

VSYNC AI Vsync input

ADC_VDD33 AP ADC Power 3.3V

ADC_VDC_VDD33 AP ADC Power 3.3V

VIN_0P AI ADC Blue Input 1 Positive
VIN_BN AI ADC Blue Input 1 Negative
VIN_1P AI ADC Green Input 1 Positive

VIN_GN AI ADC Green Input 1 Negative

VIN_2P AI ADC Red Input 1 Positive

VIN_RN AI ADC Red Input 1 Negative

VIN_3P AI YPbPr Blue Input

VIN_Y0N AI Common GND for YPbPr

VIN_4P AI YPbPr Green Input
VIN_5P AI YPbPr Red Input
VIN_6P AI YPbPr Blue Input/Scart Blue

VIN_Y1N AI Common GND for YPbPr/Scart

VIN_7P AI YPbPr Green Input/Scart Green
VIN_8P AI YPbPr Red Input/Scart Red/Scart C

ADC_VDD12 AP ADC Power 1.2V

5V tolerance even when
power-off
5V tolerance even when
power-off
5V tolerance even when
power-off

Connect 6. 2K to GND

Ｍａｉｎ　ＩＣ

RTD2674S

204
205
206
207
208
209
210
211
212
213
214
215
216 AGND_BB1 AP Analog Baseband GND

Note

ADC_VDC_VDD12 AP ADC Power 1.2V

ADC_GND_OFF AP ADC GND

VIN_11P AI S-Video C/Scart C Input

VIN_A0N AI Common GND for Scart/SV

VIN_9P AI S-Video Y/Scart Y Input

VIN_12P AI S-Video C Input

VIN_A1N AI Common GND for SV

VIN_10P AI S-Video Y Input
VIN_13P AI CVBS Input

VIN_A2N AI Common GND for CVBS

VIN_14P AI CVBS Input

AVDD_BB1 AP Analog Baseband Power 3.3V

1. AP : Analog Power/Ground

2. AI : Analog Input

3. AO : Analog Output

4. AIO : Analog Input/Output

5. DP : Digital Power/Ground

6. I : Digital Input

7. O: Digital Output

8. IO : Digital Input/Output

TDA7266SA Sound Power Amplifier

Wiring diagram

Troubleshooting flow

1. No raster

2. No picture, but sound is normal

3. No sound, but picture is normal.

APPENDIX-B: Exploded view (LCD-22R35FHD)

PART LIST OF EXPLODED VIEW

REF.No. DESCRIPION

1 Front cabinet assembly
2
3 Main frame
4
5
6
7
8
9 Interface baffle (down)
10 Power cord clip
11 Interface baffle
12 Key board assembly
13
14
15

Display panel

Main board assembly
Power / backlight board assembly
Back cover assembly
Standing pole assembly
Pedestal assembly

Speaker assembly
IR assembly
Light-guided pole

Note: design and specification are subject to change without notice.

PART LIST

LCD-22R35FHD ver.1.0

REF.No. PARTS No. DESCRIPION Q'TY REMARK

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

16
17 XI5944038790

XI662242005D
XI5203228203
XI574022801D
XI6KC03101B0
XI6KH0022010
XI672242N020
XI6156090800
XI6151201010
XI5810M6870A
XI572011201C
XI5810H68610
XI6KC0250510
XI6170847000
XI6KC0310910
XI5700315010
XI6010J03505

Front cabinet assembly 1
Display panel

Main frame 1
Main board assembly
Power / backlight board assembly
Back cover assembly
Standing pole assembly
Pedestal assembly

Interface baffle (down) 1
Power cord clip 1
Interface baffle 1
Key board assembly 1
Speaker assembly
IR assembly
Light-guided pole
Remote control
User manual

1 CLAA215FA01 V2

1
1
1
1
1

1
1
1
1
1

Only the parts in above list are used for repairing.
Other parts except the above parts can't be supplied.

Appendix: Installing the Stand

If the stand is provided, please read these instructions thoroughly before attempting this installation.

You must install your TV into the stand in order for it to stand upright on a cabinet or other flat surface. If you intend
to mount your TV on a wall or other vertical surface, you must remove the stand column.

Cautions:

Make sure that you handle your TV very carefully when attempting assembly or removal of the stand. If you are not
sure of your ability to do this, or of your ability to use the tools necessary to complete this job, refer to a professional
installer or service personnel. The manufacturer is not responsible for any damages or injuries that occur due to
mishandling or improper assembly.

The speaker is not intended to support the weight of your TV. Do not move or handle your TV by the speaker. This
can cause damage to your TV that is not covered by the manufacturer's warranty.

Before attempting assembly or removal of the stand, unplug the AC power cord.

Installing the stand

Push downward s

Stand groove

Stand column

Stand

Adjusting the viewing angle

forward

Stand

Stand

backward

To install the stand:

Place the stand on the table, hold the display upright and aim the
bottom stand column toward the stand groove, then carefully push
the display downwards, fully insert the column into the stand until the
lock snaps. Now the stand is assembled.

To adjust the viewing angle:

Tilt the screen forward 5 or backward 10 .

Caution: When adjusting the viewing angle, be careful not to tip over
your TV.

o o

5°

Detaching the Stand

10°

To detach the stand:

1.Place carefully the display on its front side with a soft cushion

90

below, shake the stand forward or backward to adjust angle
between the stand and the display, let the angle ≤ 90°.

Appendix: Installing the Stand (Continued)

Pull out the stan d

Pre ss together
and push inside

Tabs

Removing the Stand Column

2.Press the two tabs together and push inside properly, and pull out

the stand at the same time to detach the stand.

To remove the stand column:

If wall mounting, please detach the stand column.

Place carefully the display on its front side with a soft cushion below,

loosen and remove 4 pcs screws, detach the stand column.

Stand Column

4 pcs screws

NOTE:

!The appearance of this product in these illustrations may differ from your actual product, and is for

comparative purposes only.

WALL MOUNTING INSTRUCTIONS

Safety Precautions:

1. Be sure to ask an authorized service personnel to carry out setup.

2. Thoroughly read this instruction before setup and follow the steps below precisely.

3.The wall to be mounted should be made from solid materials. Only use accessories supplied by the manufacturer.

4.Very carefully handle the unit during setup. We are not liable for any damage or injury caused by mishandling or improper installation.

5.Be sure to place the unit on a stable and soft platform which is strong enough to support the unit.

6.Do not uplift the speaker when moving the display. The appearance of the unit may different from the actual ones.

7.Design and specifications are subject to change without notice.

8. Retain these instructions for future reference.

Note: All the wall mounting parts are optional and may be unavailable in your model.

Below we will show you how to mount the Display on the wall using our company’s wall mounting components.

11

Take out these parts from the box.

Wall Mounting
Component

(including bracket
and connector)

Expansion Bolt

Wood Screw

M4 Screw

Fig. 1

Fully insert the two insertions on the wall mounting connector into the

44

locating grooves on the wall mounting bracket from top to bottom end.

22

Screw 4pcs expansion bolts to fix
the wall mounting bracket on the
wall.

Wall

Wall Mounting Bracket

Fig. 2a

If your wall is a wooden structure, please
fix the wall mounting bracket on the wall
with 8 pcs wood screws.

Wall

Wall Mounting Bracket

Fig. 2b

55

Use screwdriver to revolve the Clasper to the Positioner

following the direction of the arrow.

33

Use the 4pcs M4 screws to fix the wall

mounting connector to the rear of the

display unit.

Wall Mounting Connector

Fig. 3

Clasper

Positioner

Fig. 4

Fig. 5

February 2011