Polaroid LC20H15 Скачать руководство пользователя

Страница: 26 / 32

Title

Number

Revision

Size

Date:

5-Nov-2003

Sheet of

File:

F:\temp2\A-USER\POWER.SCH

Drawn By:

X101

12V

C101

16V 2200u

C102
0.1u

Vin

output

GND

on/of

Feedbad

LM2596

VD101

MBRD340

L101
33uH

C103

16V 470u

C104

0.1u

L102

STPB-300

C107
0.1u

GND

X102

PGND1

C109
0.1u

C108

10V 100u

C111

10V 100u

GND

C106

10V 22uF

VDDQ3

C116

0.1u

C124
0.1u

C118

10V 47u

C128

10V100u

V18

GND

Vin

GND

Vout

LM1117MPX

Vin

GND

Vout

AS2830

C122

0.1u

C121

10V100u

GND

R103
10K

Vin

GND

Vout

LM1117MPX

C110

0.1u

C123

10V100u

AVDD

L103

STPB-300

C117
0.1u

L108

6.8uH

C119

0.1u

L106

STBH-181

C115

10V47u

L107

STBH-102

C127

0.1u

L110
22uH

C129

10V100u

LCDON

LVDSON

VD104
IN4148

VD105
IN4148

D2a

D1b

U19

IRF7307

PGND1

R112

100K

C137

0.1u

V12-STB

PGND1

C135
0.1u

L112

STPB-300

PGND1

V12

R102

1.5K

R101
1.5K

V102

BC847

GND

V12

V5-STB

C133

16V100u

GND

PB5

PB3

PB4

GND

PB0

PB1

PB2

VCC

ATTINY12L

VD102

HZ5V1

R104

4.7K

POWER

RESETn

R109

10K

R106
4.7K

DVDD1

C132
0.1u

PGND4

R107

4.7K

GND

R114

100

R115

100

R116

100

FUSE

C130

10V100uF

C131
0.1u

V5-1

R113

R117

4.7k

HOLD

R118

47K

V12

C134
0.1u

R119

10K

LED

PGND4

RZ1

PGND6

GND

V12-STB

R120
10K

V103
BC847

R121
1.8K

R122
1.8K

R123
1.8K

GND

V12

C138

0.1u

R124
100K

R125
20K

Содержание LC20H15

Страница 1: ...LCD TELEVISION LC20H15...

Страница 2: ...Adapter FSP060 1A 1 615 10483 03 Stand Assy 1 667 L20H3 14A Backlight Board 1 FLM 2011 Functional Board List LCD Plasma Televisions Please note that this BOM list may vary from the original documentat...

Страница 3: ...hooting Method of software upgrading Briefing on LC20H15 and its working principle Wiring diagram Serial NO of parts Identification criteria for the bright spot and dark spot of the LCD screen Trouble...

Страница 4: ...t 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...

Страница 5: ...e 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 r...

Страница 6: ......

Страница 7: ...ss to 50 and contrast to 50 Adjust the line center and the field center so that the picture is correctly positioned h Input signal of 16 gray grades Gray H 16 Enter the factory menu and perform calibr...

Страница 8: ...0I 50 Hz 480I 60 Hz separately and check if the picture and sound is normal 8 Preset ex works In the status of TV enter the factory menu by pushing the factory key and then perform presetting 9 Ex wor...

Страница 9: ...e 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...

Страница 10: ...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 corr...

Страница 11: ...it s ready to run For other settings please refer to the Fig Above already defaulted by the system normally no need to change 4 Switch on TV set the FLASH write program begins to run 5 After FLASH wri...

Страница 12: ...n42 PIN43 PIN44 Audio frequency signal is processed with sound in IC N1 VCT3833 Pin19 and then output through MSP3420G Pin28 Pin27 to SRS for surround sound processing in IC N6 M62494E Finally it is s...

Страница 13: ...ROCESS CHIP C BUS VIDEO OUT CRYSTAL 20 25M VIDEO DECODING C BUS C BUS TUNER ANTENNA Supply 12V to LCD panel supply 12V to backlight and power amp sound processing c BUS SPEAKER EARPHONE OUTPUT POWER...

Страница 14: ...h various kinds of three terminal stabilizing integrated circuits is output as 1 8 V and 2 2 V U3 is a power supply managing IC which cuts off the 5 V output in the case of standby so as to keep low p...

Страница 15: ...broad band chroma etc for the use of S VHS broad band broad chroma If self adaptive comb filter is used to carry out high quality Y C separation then the color decoder conducts the processing in S VHS...

Страница 16: ...sound processing from analog IF signal input to AF OUT audio output after processing is performed in this single chip The sound signal of TV AV S VIDEO Y Pb Pr VGA is input through the ports of MSP34x...

Страница 17: ...d restore the stereo sound that is taking place at the site It is a patented sound technology of SRS Lab USA The signal is fed to pins 1 and 2 of M62494 through pins 27 and 28 of MSP34x0 After process...

Страница 18: ...cy amplifier of category D The gains scope provided is 40dB to 36dB Supply voltage is 12V The input of the amplifier is differential input any noise at the two input sides of the channel can be elimin...

Страница 19: ...and with phased in and phased out function PW1306 includes an 80X86 CPU 16 bit micro processor with interruption port universal I O ports VART port IR decoder PWM output port and timer and a memory po...

Страница 20: ...Memory Out Bus Mem ory Buffer Processor Mem ory Interface Memory In Bus OSD PW1306 Video ImageProcessor Internal Block Diagram ADC Sync Processing HS SOY Stripper PLL CLK A D Clamp A D Clamp VS Pow er...

Страница 21: ...18 WIRING DIAGRAM...

Страница 22: ...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 un...

Страница 23: ...signal Check whether U1 pin 11 have output waveform Check N8 pin3 pin 5 s input signal Replace N8 Yes No Yes No No No Yes No No 20 Troubleshooting guide No raster Does the logo appear on the screen wh...

Страница 24: ...B Hors Vers at X7 Check whether N1 has 5V power supply Check whether X9 pin 1 pin 2 have 5V power input Replace N2 Replace V105 V17 Replace N1 Measure N1 pin 33 pin 35 waveform Measure N1 pin 42 pin...

Страница 25: ...YNC VSYNC PI5V330A PI5V330B IR ROMWEn ROMOEn A 19 1 D 15 0 NMI LVDSON DRE 7 0 DRO 7 0 DGE 7 0 DGO 7 0 DBE 7 0 DBO 7 0 DCLK DVS DHS DEN BLKON PWM LCDON RXD TXD HOLD FLASHID SDA1 SCL1 BUSY POWER REQ PW1...

Страница 26: ...10V100u AVDD L103 STPB 300 V5 C117 0 1u L108 6 8uH C119 0 1u L106 STBH 181 C115 10V47u L107 STBH 102 C127 0 1u L110 22uH C129 10V100u LCDON LVDSON VD104 IN4148 VD105 IN4148 S1 1 G1 2 S2 3 G2 4 D2a 5...

Страница 27: ...7 VCC 8 U11 24LC21 R220 10K C210 0 1u 1 2 3 4 5 6 GND 7 8 9 10 11 12 13 AVDD 14 U6 74HC14A L202 751H L201 751H R231 22 R230 22 R232 2 2K R233 2 2K C221 22p C220 22p C222 0 1u C223 10V 10u R G B H V X...

Страница 28: ...PORTA3 205 PORTA2 206 PORTA1 207 PORTA0 208 U18 PW130 DVDD1 VDDQ3 VDDQ3 V18 VDDQ3 V18 V18 V18 VDDQ3 V18 AVDD DVDD1 V18 VDDQ3 AVDD V18 GND GND L303 22uH R311 3 3K C318 39n C319 3 9n GND C310 47n C309...

Страница 29: ...10K R502 3 3k GND VDDQ3 VDDQ3 V5 VDDQ3 VDDQ3 GND GND GND GND GND GND GND 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 41 42 43 44 45...

Страница 30: ...n By C608 0 1u C607 16V 100u 1 2 3 4 X602 R609 51 R610 51 GND V5 TXD RXD X603 GND BUSY SCL1 SDA1 1 REQ PGND2 LCDVCC 1 2 3 4 X604 GND V5 SDA SCL X901 C901 10V22u C902 0 1u 1 2 3 U901 HWJS538 VD901 R901...

Страница 31: ...P4 HEADER 20X2 VDDQ3 VDDQ3 DBO 7 0 DBE 7 0 DGO 7 0 DGE 7 0 DRE 7 0 DRO 7 0 DCLK PWM LCDON BKLON SCL LVDSON DEN DHS DVS RESET SDA LCDVCC C706 10V 100u VD701 IN4148 VD702 IN4148 VD703 IN4148 R706 100K R...

Страница 32: ...3 2K R12 3K9 C43 220n C42 100n C40 470p SRS STEREO SRS MONO ROUT1 LOUT1 LOUT1 ROUT1 L4 33uH C83 16V 10u L12 10uH 1 GND 2 3 GND 4 5 GND 6 Hs 7 GND 8 Vs 9 R G B X7 GND R109 10K C153 1n C154 25V 470u R10...

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