Haier L1927, Service Manual

Page 1: ...L1927...

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: ...SC 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 Surroundi...

Page 4: ...P 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 Volta...

Page 5: ...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 tele...

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 cassett...

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: ...40 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 S...

Page 9: ...er 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 Virt...

Page 10: ...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...

Page 11: ...rt 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 N...

Page 12: ...er 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 47 H Higt...

Page 13: ...eck 5V for BLON on CN10 Tunn on or not Turn on 2 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...

Page 14: ...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 according to the volitage N Y Check power supply f...

Page 15: ...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...

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 o...

Page 17: ...k 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...

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: ...et Y N Check voltage T1 PIN3 for 0V Examine and repair R267 0 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...

Page 20: ...C 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 H...

Page 21: ...R74 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 SK...

Page 22: ...0 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...

Page 23: ...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 GPIO...

Page 24: ...C3_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 H...

Page 25: ...1 ANT 5V 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 470...

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 06...

Page 27: ...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 0...

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 VD...

Page 29: ...O R204 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 I...

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_D...

Page 31: ...C136 0 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 VG...

Page 32: ...SDFL1608S100KT 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...

Page 33: ...quantity Spec Serial NO NAME NO TUNER 19 LCD PANNEL Power Workout Auditing Standard ization Approve L1911W A P07US052402 AMERICA PRIMA L1927 DC0RD0E0L00 LEGEND Power...

Page 34: ...Sincere forever Tel 86 532 88938356...