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4.Function Trouble

4.1 TV

TV can not search/No picture

Check RF signal input

N

Examine

and repair

RF device

Y

Check voltage T1/TDQ-6H3PIN6 for 5V

Examine

and repair

The power

supply net

Y

N

Check voltage T1 PIN3 for 0V

Examine

and repair

R267/0

ȍ

N

Y

Check I

2

C signal T1 PIN4,5

Check I

2

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

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Содержание HLH19BB

Страница 1: ...HLH19BB TV 8888 68 ...

Страница 2: ...CONTENT CONTENT 1 Features 2 Safety Precautions 4 Images of Module and Circuit Boards 6 Key IC Description 8 Trouble Shooting Guide 17 Signal Flowing Chart 26 Circuit Diagram 27 ...

Страница 3: ...tem NTSC 9 NO of preset channels 181 10 Picture mode Yes 11 Angel of view H 150e V 135e 12 Color display 16 777 216 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 NO 36 16 9 mode NO 37 Child Lock YES 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 60 42 Voltage range V 120 43 Power frequency Hz 60 44 Time of sleep timer MINS 240 45 Approval UL 46 Suitable market U S ...

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 Remote Board Subassembly 2 images of Control Panel Subassembly 3 images of Main Board ...

Страница 8: ...4 images of Power Supply 5 images of Inverter ...

Страница 9: ...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 10: ...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 11: ...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 12: ...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 13: ... 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 14: ...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 15: ...n 119 SCLK Serial control I F clock Open drain 120 DDCSDA2 DVI Open 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 e...

Страница 16: ...VV 3 LW RI SRUW ELW RI H WHUQDO PHPRU DGGUHVV 3 LW RI SRUW ELW RI H WHUQDO PHPRU DGGUHVV 3 LW RI SRUW ELW RI H WHUQDO PHPRU DGGUHVV 3 LW RI SRUW ELW RI H WHUQDO PHPRU DGGUHVV 36 1 3URJUDP VWRUDJH HQDEOH GGUHVV ODWFK HQDEOH 3 LW RI SRUW WHUQDO DFFHVV 3 LW RI SRUW GDWD DGGUHVV ELW RI H WHUQDO PHPRU 3 LW RI SRUW GDWD DGGUHVV ELW RI H WHUQDO PHPRU 3 LW RI SRUW GDWD DGGUHVV ELW RI H WHUQDO PHPRU 3 LW R...

Страница 17: ...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 18: ...ortcut KHFN SRZHU RXWSXW IRU 2 OK Turn on or not KHFN WKH SRZHU VXSSO QHW IROORZ Turn on the set KDQJH 2 2U 7KH ORDG LV OK KHFN 3LQ 8 RU K VZLWFK VLJQDO U13 MP1410ES D17 IN5822 Check L9 47 H LJW 9ROWDJH Low voltage U13 MP1410ES 5thPIn U13 Check C111 0 01F Y N Y N N Y Y N Y N Y N N Y OK KHFN 0FX SRZHU VXSSO 5HVHW U VWDO N Y ...

Страница 19: ... Screen Check 5V for BLON on CN10 Tunn on or not Turn on 2 KHFN 0FX SRZHU VXSSO 5HVHW U VWDO Check the cirture for Q4 MMBT3904 N N N Y Y 12V inverter input Check the power supply Check the inverter or self proofed N Y KHFN 8 60 WK 3 1 ...

Страница 20: ...ck 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 ˈaccording 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 21: ...k voltage for the panel Check the panel connector Check LCD Check the output netˈthe 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 22: ...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 PCₚ U21PIN53 54 Check U21 Check...

Страница 23: ...ck 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 make sure U21 is damaged Check the net between SAW2 Pin1and C133 0 01ȝF Check C133 Y N ...

Страница 24: ...3 3 TV Audio Unormal Noise and NICAM can t be detected Check the audio system Select the right audio Search again Picture is normal Check C113 0 01UFǃD26ǃ R140 0 or change SAW2 N N Y Y ...

Страница 25: ...net Y N Check voltage T1 PIN3 for 0V Examine and repair R267 0ȍ 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 26: ...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 27: ...PU 5V 74LVC14 TVR TVG TVB VGA_SCL VGA_SDA VGA_SCL VGA_SDA SCL SDA SDA SCL 24C16 TDQ 6H3 MUTE AMP STB DC_12V TV VS TV HS TV HS TV VS DVD_PW DVD5V MP1410 MP1410 DVD_PW MUTE AMP STB PW_DN YP VGA SEL CPU 5V IR LED RED LED GRN K0 K1 U_8V DVD12V DVD5V K2 K3 K4 K5 K6 SC RST CBT3257 Y Pb Pr U_1V8 U_3V3 S_3V3 U_1V8 S_3V3 U_3V3 TUNER TVR TVG TVB AUDIO LOUT AUDIO ROUT OPTION UOC_SDA UOC_SCL UOC_REQCOMM UOC_R...

Страница 28: ...34 1N5822 SMD SMA L16 TC5026U 470K BK NA BS 1 IN 2 SW 3 GND 4 FB 5 COMP 6 EN 7 NC 8 U15 MP1410ES SO 8 C164 100pF 0603 NPO 5 50V C147 0 01uF 0603 X7R 10 50V R66 10Kohm 0603 5 1 10W C146 0 01uF 0603 X7R 10 50V R190 30 9Kohm 0603 1 1 10W R191 10Kohm 0603 5 1 10W C198 0 1uF 0603 Y5V 80 20 50V VI 3 GND 2 VO 1 U7 78L05 SOT 89 H1 TEST H2 TEST CPU5V DC_PW DC2_PW R36 NC 270ohm 0603 5 1 10W A K D11 NC 3 3V ...

Страница 29: ...LNKGND 18 VOUT 19 VIN 20 SHIELD 21 CN5 NC RC 2101 CS 104 GND GND GND GND GND GND GND SC1_R_IN SC1_L_IN SCART_B SC1_SWITCH SCART_G SCART_R SCART_VI CVBSO SC1_FB SC1_SWITCH R68 NC 39Kohm 0603 5 1 10W R156 NC 10Kohm 0603 5 1 10W R148 NC 75ohm 0603 5 1 10W C186 NC 100pF 0603 NPO 5 50V 5V 12V SC1_SWITCH 1 3 2 D38 NC BAV99LT1 A7 SOT 23 1 3 2 D39 NC BAV99LT1 A7 SOT 23 SCART_B SCART_G SCART_R SCART_VI CVB...

Страница 30: ...6 4 2 RP7 4 33ohm 0603 5 1 16W DEN DCLK DHS DVS C73 0 1uF 0603 Y 5V 80 20 50V C64 0 1uF 0603 Y 5V 80 20 50V C63 0 1uF 0603 Y 5V 80 20 50V REF DVI_SCL DVI_SDA DAGRN0 DAGRN1 DAGRN2 DAGRN3 DAGRN4 DAGRN5 DAGRN6 DAGRN7 DARED6 DARED0 DARED2 DARED4 DARED1 DARED3 DARED5 DARED7 DABLU1 DABLU7 DABLU5 DABLU0 DABLU2 DABLU3 DABLU4 DABLU6 1 3 5 7 8 6 4 2 RP14 4 33ohm 0603 5 1 16W DHS DVS DE C60 10pF 0603 N P O 5...

Страница 31: ...hm 0603 5 1 10W R133 10Kohm 0603 5 1 10W 5V C148 0 22uF 0603 Y5V 80 20 16V E69 10uF 25V 20 5 11 105 C155 3300pF 0603 X7R 10 50V R204 390ohm 0603 5 1 10W C75 0 1uF 0603 Y5V 80 20 50V E70 1uF 50V 20 5 11 105 E68 2 2uF 50V 20 5 11 105 8V C77 0 1uF 0603 Y5V 80 20 50V C128 0 1uF 0603 Y 5V 80 20 50V 3 5 6 7 26 54 92 R216 100ohm 0603 5 1 10W R217 100ohm 0603 5 1 10W C86 0 1uF 0603 Y5V 80 20 50V L37 GZ160...

Страница 32: ...O 41 Q22 MMBT3906 2A SOT 23 Q21 MMBT3906 2A SOT 23 E46 100uF 16V 20 5 11 105 GND R220 10Kohm 0603 5 1 10W R229 240ohm 0603 5 1 10W R49 1Kohm 0603 5 1 10W GND D14 LL4148 LL 34 R231 4K7ohm 0603 5 1 10W R244 1K2ohm 0603 5 1 10W Q9 MMBT3904LT1 1A SOT 23 R245 5K6ohm 0603 5 1 10W Q14 MMBT3904LT1 1A SOT 23 R221 10Kohm 0603 5 1 10W GND C120 0 1uF 0603 Y5V 80 20 50V GND GND MUTE AMP_STB Q15 MMBT3904LT1 1A ...

Страница 33: ...10 100pF 0603 NPO 5 50V C11 100pF 0603 NPO 5 50V C12 100pF 0603 NPO 5 50V C13 100pF 0603 NPO 5 50V C17 100pF 0603 NPO 5 50V SDIO DVD_STB DVD_CLK DVD_IR DVD_DAT GND 1 2 3 4 5 CN19 NC 5PIN 2 0 D H R83 NC 330ohm 0603 5 1 10W IR_IN LED_O LED_G PPWR BACKLIGHT_PW R263 4K7ohm 0603 5 1 10W R264 4K7ohm 0603 5 1 10W R266 510ohm 0603 5 1 10W R265 510ohm 0603 5 1 10W CPU5V Q1 MMBT3906 2A SOT 23 Q2 MMBT3906 2A...

Страница 34: ...E61 NC 47uF 25V 20 5 7 105 R55 NC 4K7ohm 0603 5 1 10W R54 NC 68Kohm 0603 5 1 10W A OUTSR R22 NC 100ohm 0603 5 1 10W E6 NC 47uF 25V 20 5 7 105 C92 NC 0 1uF 0603 Y5V 80 20 50V 8V R114 NC 75ohm 0603 5 1 10W R64 NC 100ohm 0603 5 1 10W R63 NC 100ohm 0603 5 1 10W CVBS OUT A OUTSL A OUTSR DVD 5V DVD 12V 1 2 3 4 5 6 CN16 NC 6PIN 2 0 CVBSO A OUTSL A OUTSR 1 2 3 4 5 CN14 5PIN 2 0 D H DVD_STB R232 NC SDFL160...

Страница 35: ...180Kohm 0603 5 1 10W R143 NC 22Kohm 0603 5 1 10W R139 NC 6K8ohm 0603 5 1 10W R147 NC 560Kohm 0603 5 1 10W R150 NC 6K8ohm 0603 5 1 10W D26 0ohm 0805 A A K K D28 NC LL4148 LL 34 D25 NC BA792L8 SOD110 Q12 NC MMBT3904LT1 1A SOT 23 R140 0ohm 0603 5 1 10W OP2 R99 NC 100ohm 0603 5 1 10W C123 NC 0 1uF 0603 Y5V 80 20 50V E30 NC 47uF 25V 20 5 7 105 5V_IF L12 EC0410 101K C124 0 1uF 0603 Y5V 80 20 50V E38 47u...

Страница 36: ...ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ ...

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