Insignia NS-LTDVD19 - 19" LCD TV, Service Manual

Page 1: ...NS LTDVD19 ...

Page 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 ...

Page 3: ...system NTSC 9 NO of preset channels 181 10 Picture mode Yes 11 Angel of view H 160 V 160 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 ...

Page 4: ... CHIP Yes 34 Semitransparent menu Yes 35 ZOOM No 36 16 9 mode Yes 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 80 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 A ...

Page 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...

Page 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...

Page 7: ...Images of Module and Circuit Boards 1 images of Remote Board Subassembly 2 images of Control Panel Subassembly 3 images of Main Board 4 images of Power Supply ...

Page 8: ...640 Digital ATSC upgrade for Analog TVs The ZR397xx family consists of SupraHD 760 IC ZR39760 Digital Flat Panel TVs for the ATSC Market SupraHD 740 IC ZR39740 Digital ATSC upgrade for Analog TVs 1 2 SupraHD 760 IC Description The SupraHD 760 IC is a members of the SupraHD family of DTV controllers developed by Zoran These devices are intended to be used in ATSC compliant television implementation...

Page 9: ...ner Figure 2 SupraHD 760 DTV System Diagram FTA Implementation Front Panel Rear Chassis Connections ZR39760 ATSC NTSC Tuner Analog Mux CVBS IF IF CVBS S Video In I2C0 HI2C HCEC HDMI MIF Stereo D A Virtual Suround ACLK LRCLK ADATAO0 ADATAO1 ADATAO2 As appropriate for the design CVBS C Y Audio A D I2S0 L CLKIN IEC958 Audio Amp IRR UART0 R GPIOx GPIOx L Audio RAudio Video A D Unconpressed Digital HDI...

Page 10: ...d Guest Bus 5 GADR 4 0 GDAT 7 0 6 GCS_n 5 0 1 GW S_ACK 5 GDIR GOE_n GIOW R_n GIORD_n GWE_n 4 GIRQ 3 0 CLKIN CLKOUT BVCI AVCI BUS 64b RESET_n VideoI F 29 13 HDMI_SCL HDMI_SDA HDMI_CEC HDMI_HPD HDMI_REXT HDMI_D0P HDMI_D0N HDMI_D1P HDMI_D1N HDMI_D2P HDMID2N HDMI_CLKP HDMI_CLKN TDO TDI TCK TMS TRST_N TAPSEL 10 PVCI BUS 64b LinkList CLKGEN DVCXO PLL 2 BLT UART1 2 UART1_TX UART1_RX ACLK BCLK LRCLK ADATA...

Page 11: ...ort output from the integrated Demodulator 4 Uncompressed Digital Video YUV or RGB Format via HDMI Port 5 Uncompressed Digital Video YUV or RGB Format via 24 bit UDI Port 6 NTSC CVBS Analog Video via NTSC PAL Decoder Port Video Output Options A Uncompressed Digital Video YUV or RGB Format via LVDS Output B Uncompressed Digital Video YUV or RGB Format via Uncompressed Digital Video Port Audio Input...

Page 12: ...wer 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 U13 MP1410ES D17 IN5822 Check L9 47μH Higt Voltage 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 Check Mcu 1 power supply 2 Reset 3 Crystal N Y ...

Page 13: ...Check 5V for BLON on CN10 Tunn on or not Turn on Check Mcu 1 power supply 2 Reset 3 Crystal 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 Check U25 SM5964 43th PIN ...

Page 14: ...eck 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 ...

Page 15: ...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 ...

Page 16: ...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...

Page 17: ...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 01μF Check C133 Y N ...

Page 18: ...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 01UF D26 R140 0 or change SAW2 N N Y Y ...

Page 19: ...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 ...

Page 20: ...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 ...

Page 21: ... NC 10Kohm 0603 5 1 10W Q4 NC PMBT3904 VI 3 VO 2 ADJ 1 U8 AZ1117H ADJ TR E1 R128 68ohm 0603 5 1 10W R141 75ohm 0603 5 1 10W E3 470uF 25V 20 10 13 105 C11 0 1uF 0603 Y5V 80 20 50V F1 3G3A 250V D1 SK34A SMA L20 TC5026U 470K BK NA BS 1 IN 2 SW 3 GND 4 FB 5 COMP 6 EN 7 NC 8 U4 MP1430DN LF Z C52 100pF 0603 NPO 5 50V C48 0 01uF 0603 X7R 10 50V R56 10Kohm 0603 5 1 10W C47 0 01uF 0603 X7R 10 50V R7 30K9oh...

Page 22: ...20 50V R232 4K7ohm 0603 1 1 10W C193 0 1uF 0603 Y5V 80 20 50V C196 1uF 0603 Y5V 80 20 10V C200 1uF 0603 Y5V 80 20 10V VCC2_6 VCC2_6 VCC2_6 DDR Bypass Caps DDR SDRAM PWR VREF 49 VDDQ1 3 VSSQ1 6 VSS1 34 VDD2 18 NC1 14 VDDQ2 9 VSSQ2 12 VDDQ3 15 VDD1 1 VDD3 33 VSS2 48 VSSQ3 52 VDDQ4 55 VSSQ4 58 VDDQ5 61 VSSQ5 64 VSS3 66 NC2 17 NC3 19 NC4 25 NC5 43 NC6 50 NC7 53 U3B HY5DU561622ETP 4 C201 0 1uF 0603 Y5V...

Page 23: ..._N 4 F4 GCS_N 2 V4 GCS_N 1 T4 U1K ZR39760 Transport I O TSI_FRAME E4 TSI_CLK E5 TSI_VALID D1 TSI_DATA C2 TSO_FRAME D4 TSO_CLK D5 TSO_VALID D2 TSO_DATA C1 U1I ZR39760 SD_CSN LCD_PWR_SW LCD_ON GPIO31 GPIO4 GPIO5 GPIO6 GPIO7 GPIO26 GPIO30 GPIO33 GPIO34 GPIO27 GPIO28 CBL1_5V R183 5K1ohm 0603 5 1 10W R181 6K8ohm 0603 5 1 10W DSTROB R184 10Kohm 0603 5 1 10W R185 10Kohm 0603 5 1 10W Test Pins RSVD 0 T10 ...

Page 24: ...CC3_3 C230 0 1uF 0603 Y5V 80 20 50V HDMI_CLK HDMI_D0 HDMI_D1 HDMI_D2 HDMI_D2 HDMI_CLK HDMI_D1 HDMI_D0 HDMI_VDD HDMI_HPD C207 0 1uF 0603 Y5V 80 20 50V C177 0 1uF 0603 Y5V 80 20 50V 5V HDMI_CLK HDMI_D0 HDMI_D1 HDMI_D2 HDMI_D2 HDMI_CLK HDMI_D1 HDMI_D0 HDMI_HPD R139 100ohm 0603 5 1 10W R96 100ohm 0603 5 1 10W HDMI1_DDC_SDA HDMI1_DDC_SCL C172 NC 22pF 0603 NPO 5 50V C176 NC 22pF 0603 NPO 5 50V R83 4K7oh...

Page 25: ...V 2 AS TU 9 IF AGC 6 SDA 5 DIF 7 TU 5V 3 AS IF 10 SIF 11 CVBS 12 SCL 4 DIF 8 GND3 17 GND4 18 T1 FQD1236E FH 5 C237 47pF 0603 NPO 5 50V C238 47pF 0603 NPO 5 50V R241 470ohm 0603 5 1 10W R242 470ohm 0603 5 1 10W TU_CVBS C182 0 1uF 0603 Y5V 80 20 50V R309 75ohm 0603 5 1 10W TU_SDA TU_SCK IF_AGC C63 NC 10pF 0603 Y5V 80 20 50V L15 CH8010U 470K 037 G TU_SDA TU_SCK SIF C51 0 1uF 0603 Y5V 80 20 50V L14 EC...

Page 26: ... C41 0 1uF 0603 Y5V 80 20 50V DVD 5V DVD_OP_12V 1 2 3 4 5 CN3 5PIN 2 0 D H G R110 33ohm 0603 5 1 10W DVD_CON 1 2 3 4 5 6 7 CN9 7PIN 2 0 D H G DVD Y DVD C GND DVD_IR R97 75ohm 0603 5 1 10W R114 75ohm 0603 5 1 10W R301 24Kohm 0603 5 1 10W R303 24Kohm 0603 5 1 10W R300 24Kohm 0603 5 1 10W R302 24Kohm 0603 5 1 10W DVD_AUD_R DVD_AUD_L 1 2 3 CN12 3PIN 2 0 D H G DVD_R_IN DVD_L_IN C264 100pF 0603 NPO 5 50...

Page 27: ...C R R1 L L1 AV7 CKX3 3 5 11 G C127 1uF 0603 Y5V 80 20 10V C126 1uF 0603 Y5V 80 20 10V R306 100Kohm 0603 5 1 10W R305 100Kohm 0603 5 1 10W R308 100Kohm 0603 5 1 10W R307 100Kohm 0603 5 1 10W 5V_AUDBIAS C254 1uF 0603 Y5V 80 20 10V C255 1uF 0603 Y5V 80 20 10V 1 2 3 4 CN2 4PIN 2 0 D H G YPRPB2_RIN YPRPB2_LIN R79 24Kohm 0603 5 1 10W R78 24Kohm 0603 5 1 10W 1 2 D22 MLVS0603M07 1 2 D21 MLVS0603M07 R69 24...

Page 28: ... Y5V 80 20 10V C1281uF 0603 Y5V 80 20 10V YUV_LIN YUV_RIN IEC958O R_IN L_IN MUTE 0 MUTE MUTE 1 PLAY C95 0 1uF 0603 Y5V 80 20 50V MUTE ST BY 1 2 3 CN1 NC 3PIN 2 54 D H G GND GND CBIAS 6 ROSC 7 OUT1 1 VD1 2 STBY 3 PWM1 4 IN1 5 GND 8 AVDD 9 PROT 10 IN2 11 PWM2 12 MUTEL 13 VD2 14 OUT2 15 VS2 16 HB2 17 DVDD 18 HB1 19 VS1 20 U9 R2S15102NP R98 10Kohm 0603 5 1 10W R86 10Kohm 0603 5 1 10W E31 10uF 25V 20 4...

Page 29: ... 0ohm 0603 5 1 10W AV TV_IN R198 0ohm 0603 5 1 10W C61 0 1uF 0603 Y5V 80 20 50V TU_CVBS AV_CVBS IN R206 100Kohm 0603 5 1 10W R289 33Kohm 0603 5 1 10W YC 9 I1C 10 I0D 14 I1D 13 YD 12 I0C 11 S 1 I0A 2 I1A 3 YA 4 I1B 6 I0B 5 YB 7 GND 8 VCC 16 E 15 U11 SN74CBT3257CD SO 16 AV 5V C91 0 1uF 0603 Y5V 80 20 50V E24 47uF 16V 20 4 7 105 5V R116 33ohm 0603 5 1 10W C56 0 1uF 0603 Y5V 80 20 50V E20 47uF 16V 20 ...

Page 30: ... 67 HSOUT 66 VSOUT 64 SOGOUT 65 SDA 57 SCL 56 A0 55 FILT 33 MIDSCV 37 REF_BYPASS 58 U2A CAT9983G 150 C110 0 039uF 0603 X7R 10 25V R94 820ohm 0603 1 1 10W R87 1Kohm 0603 5 1 10W PLL_PVD BL_BR_CNTRL SD_DET GPIO63 GPIO62 R85 2K7ohm 0603 5 1 10W C111 10pF 0603 NPO 5 50V 1 3 5 7 8 6 4 2 RP1 4 33ohm 0402 5 1 16W 1 3 5 7 8 6 4 2 RP2 4 33ohm 0402 5 1 16W 1 3 5 7 8 6 4 2 RP3 4 33ohm 0402 5 1 16W 1 3 5 7 8 ...

Page 31: ...1uF 0603 Y5V 80 20 50V R16 10Kohm 0603 5 1 10W R17 10Kohm 0603 5 1 10W GND 4 VCC 8 A0 1 A1 2 A2 3 WP 7 SCL 6 SDA 5 U14 FM24C02 GND ANALOG DDC R11 100ohm 0603 5 1 10W R12 100ohm 0603 5 1 10W VGA_SDA VGA_SCL 5V C137 22pF 0603 NPO 5 50V C138 22pF 0603 NPO 5 50V GND D17 LL4148 LL 34 D16 LL4148 LL 34 VGA5V VGA5V RGB_VSYNC V_SW_INT Pb_IN D8 MLVS0603M07 D7 MLVS0603M07 1 3 2 D49 BAV99LT1 A7 SOT 23 1 3 2 D...

Page 32: ...L1608S100KT F C83 1uF 0603 Y5V 80 20 10V C82 1uF 0603 Y5V 80 20 10V C96 0 1uF 0603 Y5V 80 20 50V VCC3_3 VCC3_3 VCC1_8 VCC1_8 VCC3_3 VCC1_8 VCC1_8 VCC2_6 VCC3_3 VCC1_8 VCC3_3 5VSB IR_IN 5VSB L C320 NC 560pF 0603 X7R 10 50V C26 0 1uF 0603 Y5V 80 20 50V R299 33ohm 0603 5 1 10W SM_CS I2C1CLK I2C1DATA 1 3 5 7 8 6 4 2 RP21 4 4K7ohm 0402 5 1 16W DVD_IR LED_RED LED_GRN PWR_SW Y4 11 0592MHZ 30PPM 20PF HC 4...

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Page 34: ...Sincere forever ...