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Title

Number

Revision

Size

A3

Date:

27-Feb-2007

Sheet    of 

File:

E:\

\ATSC\UOC3+ATSC\PCB

\TD303C

PCB.Ddb

刘杰

原理图

原理图及

Drawn By:

S-C

Y

C

S1

DSW-4-011

S-Y

R8

75ohm-0603-±5%-1/10W

C18

330pF-0603-X7R-±10%-50V

L5

SDFL1608Q1R0KT(F)

C70

330pF-0603-X7R-±10%-50V

R67

75ohm-0603-±5%-1/10W

L6

SDFL1608Q1R0KT(F)

C109

330pF-0603-X7R-±10%-50V

C40

330pF-0603-X7R-±10%-50V

S-Y'

S-C'

1

3

2

D8

BAV99LT1(A7)-SOT-23 

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3

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D7

BAV99LT1(A7)-SOT-23 

C14 0.1uF

-0603-

Y5V-

+80%

-20%

-50V

C166

0.1uF-0603-Y5V-+80%-20%-50V

R97

47Kohm-0603-±5%-1/10W

R93

47Kohm-0603-±5%-1/10W

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D24

MLVS0603M07

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D23

MLVS0603M07

PC_AUD_L

PC_AUD_R

R242

1Kohm-0603-±5%-1/10W

R255

47Kohm-0603-±5%-1/10W

R233

1Kohm-0603-±5%-1/10W

R254

47Kohm-0603-±5%-1/10W

DVD_AUD_R

DVD_AUD_L

 

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CN22

3PIN-2.0-D-H-G

DVD_R_IN

DVD_L_IN

VGA_R

VGA_G

VGA_B

VGA_SCL

VGA_SDA

VGAHS

VGAVS

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CN1

D351-015F-001-

-G

短体

VGAVS

VGAHS

R4

100ohm-0603-±5%-1/10W

C2

47pF-0603-NPO-±5%-50V

R5

100ohm-0603-±5%-1/10W

C1

47pF-0603-NPO-±5%-50V

VGA_R

VGA_G

VGA_B

VGA_VS

VGA_HS

R2

2Kohm-0603-±5%-1/10W

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2Kohm-0603-±5%-1/10W

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100pF-0603-NPO-±5%-50V

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AV4

AV3-8.4-14(

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红色主体 绿、蓝、红

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CN7

7PIN-2.0-D-H-G

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S2-C

GND

GND

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SDFL1608Q1R0KT(F)

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330pF-0603-X7R-±10%-50V

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75ohm-0603-±5%-1/10W

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SDFL1608Q1R0KT(F)

C213

330pF-0603-X7R-±10%-50V

C192

330pF-0603-X7R-±10%-50V

S2-Y/

S2-C/

ATV_IIC SW

C

R

R1

L

L1

AV1

CKX3.5-2

C56

1uF-0603-Y5V-+80%-20%-10V

C57

1uF-0603-Y5V-+80%-20%-10V

R24

1Kohm-0603-±5%-1/10W

R28

1Kohm-0603-±5%-1/10W

1

2

D3

MLVS0603M07

1

2

D35

MLVS0603M07

YIN

PrIN

PbIN

1

3

2

D19

B

A

V

99

LT1

(A

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-2

3

1

3

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B

A

V

99

LT1

(A

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-2

3

1

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D32

B

A

V

99

LT1

(A

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T

-2

3

Содержание HL15WHITE

Страница 1: ...HL15WHITE ...

Страница 2: ...1 Features 2 Safety Precautions 3 Images of Module and Circuit Boards 4 Key IC Description Trouble Shooting Guide 5 Signal Flowing Chart 6 Bus Control Adjustment 7 Circuit Diagram ...

Страница 3: ...m ATSC NTSC 9 NO of preset channels 181 10 Picture mode Yes 11 Angel of view H 150 V 130 12 Color display 16 194 227 13 Color level 16 14 OSD languages ENGLISH FRENCH SPANISH 15 AV stereo Yes 16 Surrounding sound No 17 Audio system M 18 Bass Yes 19 Balance Yes 20 Sound mode Yes 21 Mute Yes 22 BTSC Yes 23 AV input Yes 24 AV output No 25 Y CB CR Yes 26 Y PB PR Yes 27 S video jack Yes 28 TV in Yes ...

Страница 4: ... CHIP Yes 34 Semitransparent menu Yes 35 ZOOM Yes 36 16 9 mode No 37 Child Lock No 38 Quick View Yes 39 NO of built in speakers 2 40 Audio output power Built in W 2 1 5 41 Total power input W 50 42 Voltage range V 120 43 Power frequency Hz 60 44 Time of sleep timer MINS 120 45 Approval UL 46 Suitable market U S A ...

Страница 5: ...rd Do not expose the main unit to rain or moisture Warning Do not drop or push objects into the television cabinet slots or openings Never spill any kind of liquid on the television receiver Caution If the television is to be built into a compartment or similarly enclosed the minimum distances must be maintained Heat build up can reduce the service life of your television and can also be dangerous...

Страница 6: ... the AC outlet Caution Avoid exposing the main unit to direct sunlight and other source of the heat Do not stand the television receiver directly on other produces which give off heat E g video cassette players Audio amplifiers Do not block the ventilation holes in the back cover Ventilation is essential to prevent failure of electrical component Do not squash power supply cord under the main unit...

Страница 7: ...Images of Module and Circuit Boards 1 images of Main Board 2 images of Power Supply ...

Страница 8: ...ty for direct drive of LEDs 14 DECDIG Decoupling digital supply 15 VP1 1st supply voltage TV processor 5V 16 PH2LF Phase 2 filter 17 PH1LF Phase 1 filter 18 GND1 Ground 1 for TV processor 19 SECPLL SECAM OLL decoupling 20 DECBG Bandgap decoupling 21 EWD AVL East West drive output or AVL capacitor 22 VDRB Vertical drive B output 23 VDRA Vertical drive A output 24 VIFIN1 IF input 1 25 VIFIN2 IF inpu...

Страница 9: ...left signal 50 AUDIOIN4R Audio 4 input right signal 51 CVBS4 Y4 CVBS4 Y4 input 52 C4 Chroma 4 input 53 AUDIOIN2L SSIF Audio 2 input left signal sound IF input 54 AUDIOIN2R Audio 2 input right signal 55 CVBS2 Y2 CVBS2 Y2 input 56 AUDIOIN3L Audio 3 input left signal 57 AUDIOIN3R Audio 3 input right signal 58 CVBS3 Y3 CVBS 3 Y2 input 59 C2 C3 Chroma 2 3 input 60 AUDOUTLSL Audio output for audio power...

Страница 10: ...ence voltage 0V 90 VREFAD_POS Positive reference voltage 3 3V 91 VREFAD Reference voltage for audio ADCs 3 3 2V 92 GNDA Ground 93 VDDA 1 8V Analogue supply for audio ADCs 1 8v 94 VDDA2 3 3V Supply voltage SDAC 3 3V 95 VSSadc Ground for video ADC and PLL 96 VDDadc 1 8V Supply voltage video ADC and PLL 97 INTO P0 5 External interrupt 0 or port 0 5 4mA current sinking capability for direct drive of L...

Страница 11: ...P1 2 INT2 Port 1 2 or external interrupt 2 127 P1 4 RX Port 1 4 or UART bus 128 P1 5TX Port 1 5 or UART bus 2 RTD2023B PIN SYMBOL DESCRIPTION 1 APLL_GND Ground for multi phase PLL 2 APLL_VDD Power for multi phase PLL 3 PLL_TEST1 Test Pin 1 Power on latch for MCU crystal location 4 PLL_TEST2 Test Pin 2 Power on latch for crystal in frequency 5 TMDS_TST TMDS_TEST Pin Power on latch for host interfac...

Страница 12: ... bit 4 34 V3 Video8 bit 3 35 V2 Video8 bit 2 36 V1 Video8 bit 1 37 ADC_GND ADC Ground 38 ADC_VDD ADC Power 39 V0 Video8 bit 0 40 VCLK Video8 Clock 41 NC 42 NC 43 NC 44 NC 45 NC 46 Digital 1 8V Ground GNDK 47 Digital 1 8V Power VCCK 48 COUT Crystal out 49 PWM2 Pulse width modulation output port2 50 DDCSCL1 ADC Open drain Internal 75K pull high 51 DDCSDA1 ADC Open drain Internal 75K pull high 52 DCL...

Страница 13: ...play B port Red Data 5 80 BRED4 Display B port Red Data 4 81 BRED3 Display B port Red Data 3 82 BRED2 Display B port Red Data 2 83 Pad 3 3V Power PVCC 84 Pad 3 3V Ground PGND 85 ABLU7 Display A port Blue Data 7 86 ABLU6 Display A port Blue Data 6 87 ABLU5 Display A port Blue Data 5 88 ABLU4 Display A port Blue Data 4 89 ABLU3 Display A port Blue Data 3 90 ABLU2 Display A port Blue Data 2 91 ABLU1 ...

Страница 14: ... drain Internal 75K pull high 121 DDCSCL2 DVI Open drain Internal 75K pull high 122 PWM0 Pulse width modulation output port0 123 RESET_OUT Reset out 124 33VRST_REF Reference 3 3v for Reset Out 125 DPLL_VDD Power for digital PLL 126 DPLL_GND Ground for display digital PLL 127 XO Crystal OSC output 128 XI Reference clock input from external crystal or from single ended CMOS TTL OSC 3 SM5964 PLCC Fun...

Страница 15: ... port 2 bit 12 of external memory address 29 P2 5 A13 Bit 5 of port 2 bit 13 of external memory address 30 P2 6 A14 Bit 6 of port 2 bit 14 of external memory address 31 P2 7 A15 Bit 7 of port 2 bit 15 of external memory address 32 PSEN Program storage enable 33 ALE Address latch enable 34 P4 1 Bit 1 of port 4 35 EA External access 36 P0 7 AD7 Bit 7 of port 0 data address bit 7 of external memory 3...

Страница 16: ...channel 2 7 VCC VCC is the supply voltage input 8 M SB M SB is the mute standby mode enable When held at less than 2V this signal enables the TPA1517 for standby operation When held between 3 4V and 8 8V this signal enables the TPA1517 for mute operation When held above 9 2V the TPA1517 operates normally 9 IN2 IN2 in the audio input for channel 2 10 20 GND HS GND HS are the ground and heat sink co...

Страница 17: ... VGA_SCL VGA_SDA VGA_SCL VGA_SDA SCL SDA SDA SCL 24C16 MUTE AMP STB CON12V CON12V TXD RXD TV VS TV HS TV HS TV VS DTV_PW D5V DCDC DCDC DVD_PW WAKE UP MUTE AMP STB PW_DN DVD TV SEL CPU 5V IR LED RED LED GRN K0 K1 U_8V CON12V DVD5V DVD CLK DVD DAT K2 K3 K4 K5 K6 K7 SC RST IRQ BL PWM BL PWM DVD STB DVD IR CBT3257 DVD_Y DVD_Pb DVD_Pr MCU_3V3 U_1V8 U_3V3 S_1V8 S_3V3 U_1V8 S_1V8 U_3V3 YUV_R YUV_L 4052 T...

Страница 18: ...h 07 MCU 07 MCU Sch 08 0UTPUT 08 0UTPUT Sch ACLK0 SRXD0 SCLK0 STXD0 ADATA0 LRCK0 BCK0 DTV_AUDIO VIDEO DTV_AUDIO VIDEO SCH COAX BCK0 LRCK0 ADATA0 ACLK0 IF_AGC STXD0 SRXD0 SCLK0 RS232_RX RS232_TX D_SDA D_SCL SDA_3V3 SCL_3V3 RESET_SX DTV_Flash DTV_Flash Sch DRAM_DQM1 DRAM_CKE DRAM_DQS1 DRAM_DQS1 DRAM_DQM1 DRAM_CLKN DRAM_CLK DRAM_CKE DRAM_CLK DRAM_CLKN DTV_SDRAM DTV_SDRAM Sch SCL_3V3 SDA_3V3 D_SCL D_S...

Страница 19: ...V LL 34 1 2W VIN 1 OUT 2 COM 3 FBK 4 ON 5 GND 6 U1 AP1501 50K5L A MCU VCC D5V 12V 12V C37 0 1uF 0603 Y5V 80 20 50V C39 0 1uF 0603 Y5V 80 20 50V E32 470uF 25V 20 10 13 105 BLON ADJ DVD_OP_12V R87 1Kohm 0603 5 1 10W Q26 PMBT3904 R257 10Kohm 0603 5 1 10W CPU5V C224 0 1uF 0603 Y5V 80 20 50V F1 3G3A 250V 1 2 3 4 5 6 7 8 CN10 7PIN 2 54 D H G CPU5V 8 靠 脚插 TO NT68565 TO UOCIII TO UOCIII C8 0 1uF 0603 Y5V ...

Страница 20: ...A VGAHS VGAVS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 CN1 D351 015F 001 G 短体 VGAVS VGAHS R4 100ohm 0603 5 1 10W C2 47pF 0603 NPO 5 50V R5 100ohm 0603 5 1 10W C1 47pF 0603 NPO 5 50V VGA_R VGA_G VGA_B VGA_VS VGA_HS R2 2Kohm 0603 5 1 10W R1 2Kohm 0603 5 1 10W 1 3 2 D4 BAV99LT1 A7 SOT 23 1 3 2 D5 BAV99LT1 A7 SOT 23 5V C4 0 1uF 0603 Y5V 80 20 50V 1 3 2 D36 BAV99LT1 A7 SOT 23 C190 100pF 0603 NPO 5 50V C189 ...

Страница 21: ...603 5 1 16W 1 3 5 7 8 6 4 2 RP3 4 33ohm 0603 5 1 16W 1 3 5 7 8 6 4 2 RP4 4 33ohm 0603 5 1 16W 1 3 5 7 8 6 4 2 RP5 4 33ohm 0603 5 1 16W 1 3 5 7 8 6 4 2 RP6 4 33ohm 0603 5 1 16W DARED6 DARED0 DARED2 DARED4 DAGRN0 DARED1 DAGRN1 DARED3 DAGRN2 DARED5 DAGRN3 DARED7 DAGRN4 DABLU1 DAGRN5 1 3 5 7 8 6 4 2 RP7 4 33ohm 0603 5 1 16W DAGRN6 DABLU7 DAGRN7 DHS DABLU5 DVS DABLU0 DE DABLU2 C194 10pF 0603 NPO 5 50V ...

Страница 22: ...S100KT F C88 0 1uF 0603 Y5V 80 20 50V E81 100uF 16V 20 5 11 105 L26 SDFL1608S100KT F C152 0 1uF 0603 Y5V 80 20 50V E75 100uF 16V 20 5 11 105 E76 10uF 25V 20 4 7 105 C151 0 1uF 0603 Y5V 80 20 50V R134 10Kohm 0603 5 1 10W R133 10Kohm 0603 5 1 10W 5V C148 0 22uF 0603 Y5V 80 20 16V E69 10uF 25V 20 4 7 105 C155 3300pF 0603 X7R 10 50V R204 390ohm 0603 5 1 10W C75 0 1uF 0603 Y5V 80 20 50V E70 1uF 50V 20 ...

Страница 23: ...Y0 1 Y2 2 Y 3 Y3 4 Y1 5 INH 6 VEE 7 GND 8 B 9 A 10 X3 11 X0 12 X 13 X1 14 X2 15 VDD 16 U11 74HC4052D R186 100Kohm 0603 5 1 10W R160 100Kohm 0603 5 1 10W R177 100Kohm 0603 5 1 10W R159 100Kohm 0603 5 1 10W PC_HD_YP_L PC_HD_YP_R YP_L YP_R C245 0 1uF 0603 Y5V 80 20 50V E10 47uF 16V 20 4 7 105 5V 5V_AUDBIAS R158 100ohm 0603 5 1 10W 5V_AUDBIAS 5V_AUDBIAS R185 100Kohm 0603 5 1 10W R184 100Kohm 0603 5 1 ...

Страница 24: ...Y0 1 Y2 2 Y 3 Y3 4 Y1 5 INH 6 VEE 7 GND 8 B 9 A 10 X3 11 X0 12 X 13 X1 14 X2 15 VDD 16 U11 74HC4052D R186 100Kohm 0603 5 1 10W R160 100Kohm 0603 5 1 10W R177 100Kohm 0603 5 1 10W R159 100Kohm 0603 5 1 10W PC_HD_YP_L PC_HD_YP_R YP_L YP_R C245 0 1uF 0603 Y5V 80 20 50V E10 47uF 16V 20 4 7 105 5V 5V_AUDBIAS R158 100ohm 0603 5 1 10W 5V_AUDBIAS 5V_AUDBIAS R185 100Kohm 0603 5 1 10W R184 100Kohm 0603 5 1 ...

Страница 25: ...3 5 1 16W R70 10Kohm 0603 5 1 10W RP15 4 4K7ohm 0603 5 1 16W RP14 4 4K7ohm 0603 5 1 16W RP9 4 4K7ohm 0603 5 1 16W E7 4 7uF 50V 20 4 7 105 RP11 4 4K7ohm 0603 5 1 16W RP8 4 4K7ohm 0603 5 1 16W R88 1Mohm 0603 5 1 10W TCLK UOC_SDA UOC_SCL UOC_REQCOMM UOC_READYCOMM UOC_REQREAD BL_PW LED_GRN LED_RED NT_RST NT_IRQ M_SCL VGASCL VGASDA TXD RXD CPU5V CPU5V R79 4K7ohm 0603 5 1 10W R81 1Kohm 0603 5 1 10W R82 ...

Страница 26: ...0pF 0603 NPO 5 50V R86 47Kohm 0603 5 1 10W R69 1Kohm 0603 5 1 10W C118 100pF 0603 NPO 5 50V R85 47Kohm 0603 5 1 10W R71 1Kohm 0603 5 1 10W 1 2 D21 MLVS0603M07 1 2 D9 MLVS0603M07 AV_AUD_L AV_AUD_R AV L AV R 耳机输出 LSPK RSPK 1 2 3 4 CN11 4PIN 2 54 D H G GND R210 NC 0ohm 0805 5 1 8W R218 NC 0ohm 0805 5 1 8W ROUT LOUT C R R1 L L1 AV7 CKX3 5 2 C217 1000pF 0603 X7R 10 50V C218 1000pF 0603 X7R 10 50V 4 3 A...

Страница 27: ... NPO 5 50V C278 220pF 0603 NPO 5 50V C279 220pF 0603 NPO 5 50V HAVDD HPVDD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 CN18 HMR41 AK5200 19PIN 0 5 GND GND GND GND GND RX2 RXC RX1 RX1 RX2 RXC RX0 RX0 RX_HOTPLUG DAC_AVDD HVDDE RX2 RXC RX1 RX1 RX2 RXC RX0 RX0 HDCP_SCL HDCP_SDA E6 100uF 16V 20 5 11 105 C24 0 1uF 0603 Y5V 80 20 50V 5V 3V3 C262 0 1uF 0603 Y5V 80 20 50V C263 0 1uF 0603 Y5V 80 20 50V ...

Страница 28: ...0V GND GND DTV_5V C181 0 1uF 0603 Y5V 80 20 50V C182 0 1uF 0603 Y5V 80 20 50V R288 560ohm 0603 1 1 10W 3V3_ADC R287 560ohm 0603 1 1 10W GND BCK 1 DATA 2 LRCK 3 DGND 4 VDD 5 VCC 6 VOUTL 7 VOUTR 8 AGND 9 VCOM 10 ZEROR 11 ZEROL 12 MO 13 MC 14 ML 15 SCK 16 U28 PCM1753DBQ R139 100ohm 0603 5 1 10W R143 100ohm 0603 5 1 10W C362 0 01uF 0603 X7R 10 50V C361 0 01uF 0603 X7R 10 50V C196 0 1uF 0603 Y5V 80 20 ...

Страница 29: ...5 1 16W 1 3 5 7 8 6 4 2 RP24 4 33ohm 0603 5 1 16W 1 3 5 7 8 6 4 2 RP23 4 33ohm 0603 5 1 16W 1 3 5 7 8 6 4 2 RP27 4 33ohm 0603 5 1 16W R329 1Mohm 0603 5 1 10W C352 22pF 0603 NPO 5 50V Y4 25MHz 30PPM 20PF HC 49S C353 22pF 0603 NPO 5 50V R330 1Kohm 0603 5 1 10W C350 22pF 0603 NPO 5 50V Y3 27 000MHz 30PPM 20PF HC 49S C351 22pF 0603 NPO 5 50V L39 GZ1608D121T F C333 1uF 0603 Y5V 80 20 10V C291 0 1uF 060...

Страница 30: ... 0603 X7R 10 50V C99 0 01uF 0603 X7R 10 50V C100 0 01uF 0603 X7R 10 50V C101 0 01uF 0603 X7R 10 50V C47 0 1uF 0603 Y5V 80 20 50V 1 3 2 D15 BAV99LT1 A7 SOT 23 1 3 2 D16 BAV99LT1 A7 SOT 23 33V BS L19 SDFL1608S100KT F D22 33V LL 34 1 2W C46 0 1uF 0603 Y5V 80 20 50V R235 NC 10Kohm 0603 5 1 10W Q23 NC PMBT3904 R80 0ohm 0603 5 1 10W BS PLL_TEST2 PWM R22 NC 10Kohm 0603 5 1 10W Q3 NC PMBT3904 D11 NC LL414...

Страница 31: ...RAM_ADDR10 DRAM_ADDR11 DRAM_ADDR12 DRAM_DQS1 DRAM_DQM1 DRAM_CLKN DRAM_CLK DRAM_CKE DRAM_ADDR4 DRAM_ADDR5 DRAM_ADDR6 DRAM_ADDR7 DRAM_ADDR8 DRAM_ADDR9 DRAM_ADDR11 DRAM_ADDR12 DRAM_DATA0 DRAM_DATA1 DRAM_DATA2 DRAM_DATA3 DRAM_DATA4 DRAM_DATA5 DRAM_DATA6 DRAM_DATA7 DRAM_DATA8 DRAM_DATA9 DRAM_DATA10 DRAM_DATA11 DRAM_DATA12 DRAM_DATA13 DRAM_DATA14 DRAM_DATA15 DRAM_ADDR0 DRAM_ADDR1 DRAM_ADDR2 DRAM_ADDR3 D...

Страница 32: ...R156 100ohm 0603 5 1 10W R296 33ohm 0603 5 1 10W S1 S1 G1 G1 D2 D2 D1 D1 G2 G2 S2 S2 U36 UM6K1N S1 S1 G1 G1 D2 D2 D1 D1 G2 G2 S2 S2 U37 UM6K1N S1 S1 G1 G1 D2 D2 D1 D1 G2 G2 S2 S2 U38 UM6K1N S1 S1 G1 G1 D2 D2 D1 D1 G2 G2 S2 S2 U39 UM6K1N M_SCL R315 100ohm 0603 5 1 10W R316 100ohm 0603 5 1 10W E85 NC 10uF 25V 20 4 7 105 C340 NC 0 1uF 0603 Y5V 80 20 50V R343 NC 10Kohm 0603 5 1 10W R344 NC 10Kohm 0603...

Страница 33: ... output for LDO OK Turn on or not Check the power supply net follow F1 Turn on the set Change LDO Or The load is OK Check Pin3 U13 For 350Khz switch signal U1 AP1501 50 D17 IN5822 Check L9 47μH Higt Voltage Low voltage U1 MAP1501 50 4thPIn U1 Check C111 0 01F Y N Y N N Y Y N Y N Y N N Y OK Check Mcu 1 power supply 2 Reset 3 Crystal N Y ...

Страница 34: ...Check 5V for BLON on CN10 Tunn on or not Turn on 图 2 Check Mcu 1 power supply 2 Reset 3 Crystal Check the cirture for R55 N N N Y Y 12V inverter input Check the power supply Check the inverter or self proofed N Y Check U6 NT68F631ALG 43th pin ...

Страница 35: ...o Check voltage of Q24 Turn to power suppy trouble shorting Check LCD or Panel Connector Check U5 1 Power supply 2 Time circuit Check Q24 0 3 3V 5V or 12V according to the volitage N Y Check power supply for panel Check voltage of Q24 Check Q24 be care for the shorting Check circuit between CN8 and CN9 N N N N Y Y Y Y ...

Страница 36: ...k voltage for the panel Check the panel connector Check LCD Check the output net the connector Change the panel connector Change LCD Select the right panel voltage N Y N N Y Y Check U5 For Power supply timer circuit Y Change mend the part circuit N ...

Страница 37: ...from C11 Y N Check the speaker N Y Check U25 SM5964 And U25 I 0 interface PIN6 12 Check U3 PIN1 and PIN9 for signal input Y N Y N Check U3 PIN4 and PIN6 for signal output Chekc U21PIN60 61for signal output Y N Check U3 or E45 100 Examine and repair the output net between U3 and CN11 Check net between U21 PIN60 61 And U3 PIN1 9 Check input audio input AV U21 PIN49 50 PC下 U21PIN53 54 Check U21 Check...

Страница 38: ...ure Check audio and PC AV N Y Turn to NO AUDIO trouble shooting Check signal ouput of SAW2 M9370M30 PIN1 1 check SAW2 2 check U21 PIN29 30 3 check power supply of U21 4 change U21 Check the net between SAW2 Pin1and C133 0 01μF Check C133 Y N ...

Страница 39: ...3 3 TV Audio abnormal Noise and NICAM can t be detected Check the audio system Select the right audio Search again Picture is normal Check C113 0 01UF D26 R140 0 or change SAW2 N N Y Y ...

Страница 40: ...net Y N Check voltage T1 PIN3 for 0V Examine and repair R267 0Ω N Y Check I2 C signal T1 PIN4 5 Check I2 C net connect with U25 SM5964 PIN16 17 N Y Check signal T1 PIN11 N Check the net between T1 PIN11 and U21 PIN24 25 Power supply for U21 Y Check voltage T1 PIN1 V Examine and repair The circuit N Y Change T1 TDQ 6H3 Check voltage T1 PIN9 for 33V Examine and repair 33V circuit Y N ...

Страница 41: ...PC Picture not in center Missing color Picture dithering No signal Auto adjust Check U5 RGB input Reset Y N Check R G B circuit Check VS HS signal Check OSD setting Reset Check VS HS i i Y N Check VS HS PC ...

Страница 42: ...4 3 AV SV SCART YPbPr YCbCr S Video AV Missing color No signal No signal except PC Reset Check RGB circuit Check VS HS circuit Check the circuit for power supply of U21 Check RGB signal input for U5 Y N ...

Страница 43: ......

Страница 44: ...Sincere forever ...

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