background image

1

2

3

4

5

6

7

8

A

B

C

D

8

7

6

5

4

3

2

1

D

C

B

A

MA9

DMA3

LA18

MA4

LD7

DMA6

MA4

DB9

LD5

LA8

DB8

LA6

BANK0

MA8

YUV0

DB12

MA7

MA3

DB2

DMA10

YUV4

MA7

DMA0

XOUT

DB1

27MHZ

DB14

MA2

MA5

DB4

MA1

LA10

LD6

LA1

DB0

DQMX

DB7

DB5

MA9

DB14

DB6

LA11

MA10

DMA8

DMA11

LD3

LD1

LA9

YUV5

DB15

DMA4

DMA2

DMA9

DB7

MA11

DB3

LA12

MA5
MA6

DMA7

LA3

MA10

YUV2

LA17

YUV3

DB11

DB10

MA6

DB10

DB15

DB5

DB8

MA11

WE#

DMA1

AUX4

LA15

BANK1

LA7

LD4

XIN

LA0

CKE

DB2

DB3

RST#

LA4

CS0#

MA0

MA8

DB13

LA21

CAS#

DB11

WRLL#

LCS3#

DB13

LA19

DB12

LA13

MA3

DB1

EAUX31

DB6

DB4

DB9

RAS0#

LA5

LA2

MA2

MA1

LA16

LOE#

YUV1/VREF

LD0

DB0

DMA5

LD2

LA14

MA0

HRD#

HD3

HWR#

HD0

HA1

HD2

HD7

HD6

EAUX30

HSYNC

LCS2#

HD1

HD4
HD5

HA2

HIRQ

HA0

HD9
HD10
HD11

HD13
HD14
HD15

HRST#

HCS3#

HCS1#

27MHZ

LD[0..7]

DB[0..15]

HD[0..15]

HD12

WRHL#

LD8
LD9
LD10
LD11
LD12

LD13
LD14
LD15

HD8

LD[8..15]

LA20

VSYNC

VDAC

UDAC

CDAC

YDAC

PCLK2X
PCLK

R48

4 . 7 K

2

1

VD4

1N6263

R71

33 OHM

1

8

2

7

3

6

4

5

RN4 12x4

2

1

VD12

1N6263

1

8

2

7

3

6

4

5

RN2

12x4

2

1

VD10

1N6263

C22
470PF

C34
27PF

C25
22P

(22PF)

C32

15PF

R67

68 OHM

R50
75 OHM

2

1

VD7

1N6263

C19
470PF

S0

1

S1

2

S2

3

GND

4

SDA

5

SCL

6

WC

7

VCC

8

N12

2 4 C 0 1 A

R72

33 OHM

R40
OPEN

R65

33 OHM

L7

FERB

1

2

G1

2 7 M

1

8

2

7

3

6

4

5

RN3 12x4

L1

FERB

R49

33 OHM

R56

33 OHM

C20
470PF

R57

33 OHM

R31

0  OHM

R73

33 OHM

C30
470PF

R66

33 OHM

1

8

2

7

3

6

4

5

RN1

33x4

L6

FERB

R78

33 OHM

R42
75 OHM

R45

4 . 7 K

C36
150P

(150PF)

HD0/DCI[0]/EAUX1[0]

122

DCS0

100

HD1/DCI[1]/EAUX1[1]

123

YUV0/CAMYUV2

106

HD2/DCI[2]/EAUX1[2]

124

VC25

9

HD3/DCI[3]/EAUX1[3]

125

YUV1/VREF

107

HD4/DCI[4]/EAUX1[4]

126

VC25

35

HD5/DCI[5]/EAUX1[5]

127

YUV2/CDAC

108

HD6/DCI[6]/EAUX1[6]

128

VC33

1

HD7/DCI[7]/EAUX1[7]

131

YUV3/COMP

109

HD8/DCI_FDS/EAUX2[0]

132

AVCC(VDAC)

111

HD9/EAUX2[1]

133

YUV4/RSET

110

HD10/EAUX2[2]

134

VC25

83

HD11/EAUX2[3]

135

YUV5/YDAC

113

HD12/EAUX2[4]

136

VC33

18

HD13/EAUX2[5]

137

YUV6/VDAC

114

HD14/EAUX2[6]

140

VC25

121

HD15/EAUX2[7]

141

YUV7CAMYUV3

115

VC25

139

VC33

27

VC25

172

VC25

44

VC33

59

VC33

68

VC33

75

VC33

92

VC33

99

AVCC(PLL)

51

VC33

104

VC33

130

VC33

148

VC33

157

VC33

159

VC33

164

VC33

183

VC33

193

VC33

201

VSS

129

DMA0

53

LA4

2

DMA1

54

DMA2

55

LA5

3

DMA3

56

LA6

4

DMA4

57

LA7

5

DMA5

58

LA8

6

LA9

7

VSS

8

LA10

10

LA11

11

LA12

12

LA13

13

LA14

14

LA15

15

LA16

16

VSS

17

LA17

19

LA18

20

LA19

21

LA20

22

LA21

23

RESET

24

TDMDX/RSEL

25

VSS

26

TDMDR

28

TDMCLK

29

TDMFS

30

TDMTSC

31

TWS/SEL_PLL2

32

TSD0/SEL_PLL0

33

VSS

34

TSD1/SEL_PLL1

36

TSD2

37

TSD3

38

MCLK

39

TBCK

40

SPDIF/SEL_PLL3

41

NC/CAMVS

42

VSS

43

RSD

45

RWS

46

RBCK

47

NC/APLL

48

XIN

49

XOUT

50

AVSS(PLL)

52

VSS

60

DMA6

61

DMA7

62

DMA8

63

DMA9

64

DMA10

65

DMA11

66

VSS

67

DCAS

69

DSCK/DOE

70

DWE

71

DRAS0

72

DBANK0/DRAS1

73

DBANK1/DRAS2

74

VSS

76

DB0

77

DB1

78

DB2

79

DB3

80

DB4

81

DB5

82

VSS

84

DB6

85

DB7

86

DB8

87

DB9

88

DB10

89

DB11

90

VSS

91

DB12

93

DB13

94

DB14

95

DB15

96

DCS1

97

VSS

98

DQM

101

DSCK

102

VSS

103

CLK

105

AVSS(VDAC)

112

PCLK2XSCN/CAMYUV4

116

PCLKQSCN/CAMYUV5/AUX3[2]

117

VSSCN/CAMYUV6/EAUX3[1]

118

HSSCN/CAMYUV7/EAUX3[0]

119

VSS

120

VSS

138

HWRQ/DCI_REQ/EAUX4[1]

142

HRDQ/EAUX4[0]

143

HIRQ/DCI_ERR/EAUX4[7]

144

HRST/EAUX3[5]

145

HIORDY/EAUX3[3]

146

VSS

147

HWR/DCI_CLK/EAUX4[5]

149

HRD/DCI_ACK/EAUX4[6]

150

HIOCS16/CAMPCLK/EAUX3[4]

151

HCS1FX/EAUX3[7]

152

HCS3FX/EAUX3[6]

153

HA0/EAUX4[2]

154

HA1/EAUX4[3]

155

VSS

156

HA2/EAUX4[4]

158

AUX0

160

AUX1

161

AUX2

162

VSS

163

AUX3

165

AUX4

166

AUX5

167

AUX6

168

AUX7

169

LOE

170

VSS

171

LCS0

173

LCS1

174

LCS2

175

LCS3

176

VSS

177

LD0

178

LD1

179

LD2

180

LD3

181

LD4

182

VSS

184

LD5

185

LD6

186

LD7

187

LD8

188

LD9

189

LD10

190

LD11

191

VSS

192

LD12

194

LD13

195

LD14

196

LD15

197

LWRLL

198

LWRHL

199

VSS

200

CAMYUV0

202

CAMYUV1

203

LA0

204

LA1

205

LA2

206

LA3

207

VSS

208

N8
ES60x8

VCC

1

DQ0

2

DQ1

4

VSSQ

6

DQ2

5

DQ3

7

VCCQ

3

DQ4

8

DQ5

10

VSSQ

12

DQ6

11

DQ7

13

VCCQ

9

DQML

15

WE

16

CAS

17

RAS

18

CS

19

A11

35

A10

22

A0

23

A1

24

A2

25

A3

26

VCC

14

VSS

28

A4

29

A5

30

A6

31

A7

32

A8

33

A9

34

NC

36

CKE

37

CLK

38

DQMH

39

NC

40

VCCQ

43

DQ8

42

DQ9

44

VSSQ

46

DQ10

45

DQ11

47

VCCQ

49

DQ12

48

DQ13

50

VSSQ

52

DQ14

51

DQ15

53

VSS

41

BA0

20

BA1

21

VCC

27

VSS

54

N10

4Mx16 SDRAM (9ns)

C35
1000PF

L5

2.7UH

C28

0.1UF

L2

2.7UH

C24
15P

(15PF)

NC

1

GND

2

NC

3

RES

4

VDD

5

N7

V6300

R76

4 . 7 K

R47

4 . 7 K

R46

4 . 7 K

2

1

VD5

1N6263

VD3
OPEN

R59

270

C29
470PF

C23
470PF

R69
4K7

R77

1 0 0 K

R43
OPEN

C31

0.1UF

R58
75 OHM

R41
4 . 7 K

R70
4K7

C33
27PF

2

1

VD8

1N6263

R81

33 OHM

R39
OPEN

R38
OPEN

L3

2.7UH

R63

33 OHM

L4
3.3UH

1

2

C21
OPEN

VCC33E

VCC

VCC33

VCC33E

VCCV

VCCV

VCCL

VCC

VCC33

VCCV

VCC33P

VCC33

VCC

VCCV

VCC

VCC33

VCC33

VCC

VCC

VCC

VCC

VCC

TSD0

TBCK

AUX3

MCLK

TWS

HIRQ

HWR#

HRD#

EAUX41

HD[0..15]

LCS2#

LD[0..7]

EAUX40

HA[0..2]

LD[8..15]
HRST#

HCS1#

HIORDY

HIOCS16#

HCS3#

RST#

AUX2

AUX6
AUX7

VDAC

CDAC
UDAC

YDAC

VSYNC

HSYNC

(47UF)

Package:  SOT-23 5L

(4.7K)

EM-MARINRESET IC

ESS REMOTE INTERFACE

(10K)

32/64MBIT SDRAM

(4.7K)

SERIAL EEPROM

VIDEO OUT

ES6420

(1N4148)

(4.7K)

NA

0

1

4.25

1

94.5

PLL1(pin36)

PLL0(pin33)

0

108

1

1

Frequency

1

reserved

121.5

1

0

3.75

0

4.5

PLL2(pin32)

bypass

1

reserved
3.5

NA

4

1

27

0

0

0

1

MULTI

0

0

101.25

1

1

0

114.75

0

1

0

0

CLK SOURCE

1

DCLK INPUT

CRSTAL OSC

PLL3(pin41)

ADDRESS

LEAST

CRITICAL TRACES

CLOCKS

DQM

MOST

CSx

WE

RAS

CAS

C

YDAC

Y

B

RGB

PR

CV

CDAC
UDAC

PB

R

CVBS&YUV

CV

Y

CVBS&S-VIDEO

G

VDAC

ES6420F/FP

VCC33

IR_DATA

LA[0..19]

TP5

VREF

12

13

11

N3D

74HCT32

R27

1.2/1W

批准

                                        

厦门华侨电子企业有限公司

XOCECO

26

5

拟制

复核

标准化

工艺

型号规格

编号

20

PCMCIA

782-L40D9-9000

203-L30K90-03D

Summary of Contents for LC22K9

Page 1: ...COLOR TELEVISION LC22K9 ...

Page 2: ...ting 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 ...

Page 3: ...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...

Page 4: ...re tabulated as follows Temperature Scope for operation 0 50 C Scope for storage 20 60 C 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 commmonly called ghost shadow The extent of the residual picture varies with the maker of LCD screen This phenonmenon doesn t represent failure...

Page 5: ...gree 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 st...

Page 6: ...f 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 Check if FLASH is written Production of the main board and decoders on the line Check Monitor board Check decoders in media board General assembly and combined calibration Connect central signal sou...

Page 7: ...in_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 ...

Page 8: ...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 accord...

Page 9: ...he liquid crystal TV set and make proper adjustment according to the signal types Picture too bright and there is distortion in the brightest area 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 Picture is whitish or too bright...

Page 10: ...nected 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 th...

Page 11: ... 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 ...

Page 12: ...T U32 CCD V CHIP Z86229 FB V U30 ADC MST9883 YPrPb U3 EEPROM U2 MICRO CONTRLER TSC80251G2D U4 FLASHMEMORY IR SIF AV1 SVHS R L AV2 R L YPrPb R L DVI R L VGA R L PCMCI R L AV R L OUT N201 AUDIO PROCESSOR MSP3420 U34 HEF4052 N203 SRS 3D STEREO CONTROLLER M62494 N205 N208 N210 D CLASS AUDIO AMPLIFIER LX1722 Si4532DY N212 TLE2142 HEADPHONE R L SPEAKER LC22K9 BLOCK DIAGRAM 10 RGB I C BUS 2 24bit YUV KEY...

Page 13: ... Prescale 2 I S1 2 I S2 Sound IF1 Sound IF2 speaker 1 MSP3420 11 Block diagram and description of LC 22K9 main IC 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 In...

Page 14: ...RGB FB Y Cr Cb Y Cr Cb Y G U B Y Cr Cb LL Clock Saturation Tint Analog Front end Contrast Brightness Peaking Clock Gen 2 I C Bus V R FB FB YCrCb RGB YCrCb 2 ADC Analog Component Front End 4 x ADC Processing 2 VPC3230 12 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 o...

Page 15: ... LPF Loop 1 Filter DOT CLK DIV Line CHAR CIR V Lock Field FLD LS SFLD SLS Control CHAR CLK CW Line Fld Decodes MSGR DOT CLK SMS SEN SCK SDA SDO 6 4 15 14 16 13 VDD 5V 12 11 2 I C SEL Vss A RREF POR CKT 4 10 Command Processor Row Address MUX Display RAM Character Generator Row Latch Display Latch SS CTR Output Logic 10 6 8 13 4 FLD V I Ref RED GREEN BLUE BOX 17 3 2 18 Addr Bus ADDR DEC 8 ADDR Decod...

Page 16: ... SLOT 0 PIP OVRLY SYNC BE FIFO 48 VID PIX DROP VGA VIDEO MUX SCALE SLOT 1 SCALE SLOT 2 MEM BE FIFO SCALE 48 24 24 16 24 48 CLUT GAMMA OSD OVERLAY DITHER ENGINE DATA STEER SDRAM INTERFACE MEM CAP FIFO MEM PACKER 48 128 128 UNPACKER MEM 128 128 48 OSD PANEL CTRL Panel clk Vga half clk Video half clk PANEL SDRAM 48 64 48 32 Scaling clk Memory clk SMARTSET SURE SYNC VID FIFO VGA FIFO FIFO MEM DIS FE 4...

Page 17: ...7 L22K9 09 X212 X204 X201 X213 P2 PCMCIA card 667 L22K9 05 667 L40D9 90 P40 P41 P6 P8 P32 VIDEO P37 AUDIO P11 CONTROL P4 PANEL INTERFACE P39 IR POWER P29 BACKLIGHT 15 WIRING DIAGRAM LCD panel Keyboard CPU board Analog board 667 L22K9 53 667 L22K9 56 ...

Page 18: ... 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 Infra red receive assy 667 L22K9 09 Self produced Push button board assy 667 L22K9 05 Self produced PCMCIA board assy 667 L40D9 90 Self produced Power supply conversion AD 11C 302 AD11C 0...

Page 19: ...0mm 5mm 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 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...

Page 20: ...fuse of power adapter is blown out Chang the power adapter Push key on the R C set or push power key to put on the set to check the status of the indication lamp Check F1 F2 if they are blown out Change CPU board Push any key on R C set to see if the indication lamp twinkles Check 12th foot of P29 is at high voltage Check 19th and 20th foot of P4 are at high electric level Check if F3 is blown out...

Page 21: ... picture change CPU board Calibrate CPU board again Change CPU board Screen display NO SIGNAL Determine modulate power supply 5V V Determine the synchronization signal of 65th foot of U30 Change U30 Check FI on CPU board is melted Determine 1st foot of P32 if there is 1VPP signal or noise wave Change TUNER 201 Determine 56th foot of U29 if there is 15 734KHZ line synchronization signal Change U29 ...

Page 22: ...tical 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 Check if R282 burns Check if TP2 is tri angle wave Change N207 Check the output wave form of foot 5 and 8 of N203 Check the output wave fo...

Page 23: ...EXPLODED VIEWS 21 ...

Page 24: ...ic 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...

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Page 44: ...CB55 0 1UF CB17 0 1UF CB37 0 1UF R24 0 OHM 1 2 CB23 100UF CB40 0 1UF IN 3 OUT 2 ADJ 1 N13 2830 3 3V CB36 0 1UF CB4 0 1UF CB5 0 1UF 1 2 CB22 10UF 1 2 X2 Power 1 2 CB34 10UF CB29 0 1UF CB9 0 1UF 1 2 CB10 10UF VCC33E VCCL VCC VCC33P VCC33 VCC VCC33 VCC VCCA VCC33 VCCA VCC 3 3V REGUALTOR EZ1085 No need to installEZ1085 circuitry if J12 provide 3 3V ES60x8 ADJ 24C01 OUT SDRAM WM8706 INP FRONT place nea...

Page 45: ... 14 D6 17 D7 18 OC 1 CLK 11 Q0 2 Q1 5 Q2 6 Q3 9 Q4 12 Q5 15 Q6 16 Q7 19 N2 74HCT374 V1 FDN338P 1 2 C5 100UF 1 2 C7 47UF C8 0 1UF C14 0 1UF C12 0 1UF R11 10K V2 FDN338P R12 10K GND1 1 D3 2 D4 3 D5 4 D6 5 D7 6 CE1 7 A10 8 OE 9 A11 10 A9 11 A8 12 A13 13 A14 14 WE PGM 15 IREQ 16 VCC1 17 VPP1 18 A16 19 A15 20 A12 21 A7 22 A6 23 A5 24 A4 25 A3 26 A2 27 A1 28 A0 29 D0 30 D1 31 D2 32 IOIS16 33 GND 34 GND3...

Page 46: ... LD0 RST LA5 LA16 LA17 LA11 LA10 LD3 LD1 LA13 LA15 LA3 LA8 LA0 LA21 LA19 LA6 LD4 LA12 LA7 LA1 LD2 LA14 LD 0 7 LA 0 19 LD 0 7 A0 12 A1 11 A2 10 A3 9 A4 8 A5 7 A6 6 A7 5 A8 27 A9 26 A10 23 A11 25 A12 4 A13 28 A14 29 A15 3 D0 13 D1 14 D2 15 D3 17 D4 18 D5 19 D6 20 D7 21 A16 2 CE 22 OE 24 A18 31 A17 30 A19 1 VCC 32 GND 16 N9 OPEN 27C040 080 90 VCC LD 0 7 4 PIN EXTENSION FOR ROM EMULATOR INTERFACE 4MBI...

Page 47: ... 66 VSS 67 DCAS 69 DSCK DOE 70 DWE 71 DRAS0 72 DBANK0 DRAS1 73 DBANK1 DRAS2 74 VSS 76 DB0 77 DB1 78 DB2 79 DB3 80 DB4 81 DB5 82 VSS 84 DB6 85 DB7 86 DB8 87 DB9 88 DB10 89 DB11 90 VSS 91 DB12 93 DB13 94 DB14 95 DB15 96 DCS1 97 VSS 98 DQM 101 DSCK 102 VSS 103 CLK 105 AVSS VDAC 112 PCLK2XSCN CAMYUV4 116 PCLKQSCN CAMYUV5 AUX3 2 117 VSSCN CAMYUV6 EAUX3 1 118 HSSCN CAMYUV7 EAUX3 0 119 VSS 120 VSS 138 HW...

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