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FUNAI LH8-M40BB, Service Manual

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FUNAI LH8-M40BB Service Manual Download Page 46

10-13

A03P0SCD6

Digital Main 6 Schematic Diagram

The order of pins shown in this diagram is different from that of actual IC3301.
IC3301 is divided into six and shown as IC3301 (1/6) ~ IC3301 (6/6) in this Digital Main Schematic Diagram Section.

1   NOTE:

Comparison Chart of 
Models and Marks

Model

Mark

LH8-M40BB

A
B

LT8-M40BB

Summary of Contents for LH8-M40BB

Page 1: ...EP model For the LH8 M40BB A03P0EP LT8 M40BB A03P1EP model the letter A03P0EP A03P1EP is printed on the Serial Number Label on the back of the unit Refer to the Serial Number Label below Serial No Lab...

Page 2: ...ze the LCD Television 6 1 Firmware Renewal Mode 7 1 Troubleshooting 8 1 Block Diagrams 9 1 Schematic Diagrams CBA and Test Points 10 1 Waveforms 11 1 Wiring Diagram 12 1 Exploded View 13 1 Mechanical...

Page 3: ...ription Condition Unit Nominal Limit 1 RECEIVED FREQ RANGE 60dBm 45ch 1 2 kHz kHz 1000 900 500 167 2 INPUT DYNAMIC RANGE mix max c 1 VHF HIGH 8ch UHF 45ch dBuV dBuV 25 101 25 101 28 98 29 98 d 2 VHF H...

Page 4: ...tly below these specifications Limit specifications represent the absolute worst condition that still might be considered acceptable In no case should a unit fail to meet limit specifications Descript...

Page 5: ...terminal screw and if applicable to the coaxial connector If the measured resistance is less than 1 0 megohm or greater than 5 2 megohm an abnormality exists that must be corrected before the instrum...

Page 6: ...near thermally hot parts be sure that leads and components do not touch thermally hot parts c the AC supply d high voltage and e antenna wiring Always inspect in all areas for pinched out of place or...

Page 7: ...PVC tubing 3 Spacers 4 Insulators for transistors E When replacing AC primary side components transformers power cord etc wrap ends of wires securely about the terminals before soldering F Observe tha...

Page 8: ...and externally exposed accessible parts RF terminals an tenna terminals video and audio input and output ter minals microphone jacks earphone jacks etc Measuring Method Power ON Insert load Z between...

Page 9: ...the flat pack IC is fixed with glue to the CBA when removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted Fig S 1 6 4 Relea...

Page 10: ...ins of the flat pack IC you can remove it easily Fig S 1 3 2 Affix the wire to a workbench or solid mounting point as shown in Fig S 1 5 3 While heating the pins using a fine tip soldering iron or hot...

Page 11: ...occur due to a potential difference caused by electrostatic charge during unpacking or repair work 1 Ground for Human Body Be sure to wear a grounding band 1 M that is properly grounded to remove any...

Page 12: ...ly CBA 22 LCD Module Assembly 23 Front Cabinet 1 Stand Cover Assembly 7 Junction CBA 9 Function CBA 8 IR Sensor CBA 21 Wall Mount Bracket L R 4 Rear Cabinet D1 20 S 5 4 S 6 2 S 7 S 8 S 9 5 Speaker Hol...

Page 13: ...art location 4 Identification of parts to be removed unhooked unlocked released unplugged unclamped or desoldered N Nut L Locking Tab S Screw H Hex Screw CN Connector Unhook Unlock Release Unplug or D...

Page 14: ...0DC 8 IR Sensor CBA 7 Junction CBA 9 Function CBA 5 Speaker Holder 6 Speaker 6 Speaker S 11 S 10 Function Knob S 10 Knob Frame Fig D2 S 12 S 13 S 14 10 Jack Holder HP 11 Jack CBA 12 Inverter Power CBA...

Page 15: ...4 4 A03P0DC 13 Tuner Shield 15 Jack Holder 18 PCB Holder 14 Power Supply CBA 17 Digital Main CBA Unit H 1 S 18 S 18 S 20 S 20 S 20 S 17 S 18 S 18 S 19 S 15 S 15 16 Shield Box S 16 S 16 S 16 Fig D4...

Page 16: ...5 A03P0DC S 21 S 22 S 22 S 23 S 23 S 24 S 26 S 25 S 25 S 25 S 24 S 26 22 LCD Module Assembly 23 Front Cabinet 19 AC Inlet Holder 21 Wall Mount Bracket R 20 Stand Bracket 21 Wall Mount Bracket L Fig D...

Page 17: ...sembly CN453 CN452 CN610 CN600 CN101 CN801 CN601 CL202B CN802 CL201A CN401 CN403 CN404 CN402 CN3903 CN3701 CN3711 CN3702 CN3703 CN3704 CN103 CL102A CL102B CL103A CL103B CN1852 CN1851 CN1801 CN1810 Pow...

Page 18: ...d remote control unit as shown in Fig 1 How to set up the service mode Service mode 1 Use the service remote control unit 2 Turn the power on 3 Press the service button on the service remote control u...

Page 19: ...screen Upon completion OK appears on the screen 5 To cancel or to exit from the Auto Calibration Component press BACK button 3 Auto Calibration PC Purpose To bring the color adjustment of PC into stan...

Page 20: ...e Press button on the service remote control unit and select C D mode 5 CUTOFF Press 3 button to select COB for Blue Cutoff adjustment Press 1 button to select COR for Red Cutoff adjustment DRIVE Pres...

Page 21: ...ce button on the service remote control unit Refer to page 5 1 To cancel the service mode Press button on the remote control unit 3 Press button on the service remote control unit to initialize the LC...

Page 22: ...by 3 Check STAND BY indicator Red LED lighting 4 Insert USB storage device with upgrade pkg file to TV set 5 Press button to turn on 6 After approximately 70 seconds the following will appear on the s...

Page 23: ...ircuit of the secondary circuit and service it if defective Check the presence that the primary component is leaking or shorted and service it if defective Check the presence that the rectifying diode...

Page 24: ...LOW CHART NO 6 Yes No Is approximately 6V voltage supplied to the collector of Q521 Check D525 D527 D528 C516 and their periphery circuit and service it if defective Check D525 C516 and their peripher...

Page 25: ...periphery circuit and service it if defective Check D539 C522 and their periphery circuit and service it if defective Check Q508 Q520 D541 D542 P ON H2 line and their periphery circuit and service it...

Page 26: ...GB input Are the video signals outputted to the specific terminal Check the luminance signal line and service it if defective Check the chrominance signal line and service it if defective Check the RG...

Page 27: ...tputted normally Audio input terminals FLOW CHART NO 17 Check the line between Pin 16 18 of CN403 and Pin 4 5 of TU1 and TU1 Tuner Unit and service it if defective Are the DIF signals outputted to Pin...

Page 28: ...CKLIGHT SW D23 LED1 B16 P ON H2 A12 REMOTE AD11 P ON H1 PROTECT1 P ON H2 P ON H1 AC11 JUNCTION CBA CN103 KEY IN1 6 6 KEY IN1 3 3 CN453 CN101 CN403 Q181 CN3703 D16 BACKLIGHT ADJ IC3101 MEMORY SCL SDA A...

Page 29: ...DEO Y IN 8 8 COM VIDEO Pb IN 6 6 COM VIDEO Pr IN 4 4 VIDEO OUT 15 BUFFER Q011 TU CVBS 29 29 SCART OUT SEL 6 6 IC1 INPUT SELECT SW CTL 15 10 1 2 TU CVBS TU1 DIF OUT2 4 DIF OUT1 5 TUNER UNIT IF AGC 6 CN...

Page 30: ...3 RGB AUDIO L OUT2 RGB AUDIO R OUT2 6 RGB AUDIO L IN2 RGB AUDIO R IN2 POWER SUPPLY CBA JACK CBA TO DIGITALSIGNAL PROCESS BLOCK DIAGRAM TO DIGITALSIGNAL PROCESS BLOCK DIAGRAM DIGITAL MAIN CBA UNIT SIF...

Page 31: ...TMDS D0 TMDS D1 TMDS D1 TMDS D2 TMDS D2 TMDS CLOCK TMDS CLOCK SDA SCL AF16 AE16 AF17 AE17 AF18 AE18 AF15 AE15 AB16 AC16 AF12 AE12 AF13 AE13 AF14 AE14 AF11 AE11 AC14 AC15 AF8 AE8 AF9 AE9 AF10 AE10 AF7...

Page 32: ...1 FEED BACK IC1801 HIGH VOLTAGE RESONANT CONTROL TO POWER SUPPLY BLOCK DIAGRAM CN610 TO POWER SUPPLY BLOCK DIAGRAM CN600 HIGH VOLTAGE RESONANT CONTROL 8 12 13 2 14 9 5 4 1 4 3 2 1 4 3 2 Q1803 Q1804 Q1...

Page 33: ...P ON 9V AL 3 3V 1 AL 5V AL 3 3V P ON 3 3V P ON 5V DIGITAL MAIN CBA UNIT P ON 3 3V 13 14 P ON 9V 6 2 3 LCD 12V 3 4 AL 3 3V 10 24 26 19 21 AL 5V 24 26 AL 3 3V 1 19 21 P ON 5V 27 29 CN600 CN601 4 2 3 15...

Page 34: ...itute replacement parts that do not have the same safety characteristics as specified in the parts list may create shock fire or other hazards Notes 1 Do not use the part number shown on these drawing...

Page 35: ...ed 2 To maintain original function and reliability of repaired units use only original replacement parts which are listed with their part numbers in the parts list section of the service manual 4 Volt...

Page 36: ...electable power supply circuit is used in this unit If Main Fuse F601 is blown check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC p...

Page 37: ...10 4 A03P0SCP2 Power Supply 2 Schematic Diagram...

Page 38: ...10 5 A03P0SCP3 Power Supply 3 Jack Schematic Diagram Comparison Chart of Models and Marks Model Mark LH8 M40BB A B LT8 M40BB...

Page 39: ...10 6 A03P0SCINP Inverter Power Schematic Diagram NOTE The voltage for parts in hot circuit is measured using hot GND as a common terminal...

Page 40: ...10 7 A03P0SCIRF IR Sensor Function Junction Schematic Diagram...

Page 41: ...of pins shown in this diagram is different from that of actual IC3301 IC3301 is divided into six and shown as IC3301 1 6 IC3301 6 6 in this Digital Main Schematic Diagram Section 1 NOTE Comparison Cha...

Page 42: ...of pins shown in this diagram is different from that of actual IC3301 IC3301 is divided into six and shown as IC3301 1 6 IC3301 6 6 in this Digital Main Schematic Diagram Section 1 NOTE Comparison Cha...

Page 43: ...of pins shown in this diagram is different from that of actual IC3301 IC3301 is divided into six and shown as IC3301 1 6 IC3301 6 6 in this Digital Main Schematic Diagram Section 1 NOTE Comparison Ch...

Page 44: ...10 11 A03P0SCD4 Digital Main 4 Schematic Diagram...

Page 45: ...of pins shown in this diagram is different from that of actual IC3301 IC3301 is divided into six and shown as IC3301 1 6 IC3301 6 6 in this Digital Main Schematic Diagram Section 1 NOTE Comparison Ch...

Page 46: ...of pins shown in this diagram is different from that of actual IC3301 IC3301 is divided into six and shown as IC3301 1 6 IC3301 6 6 in this Digital Main Schematic Diagram Section 1 NOTE Comparison Ch...

Page 47: ...of pins shown in this diagram is different from that of actual IC3301 IC3301 is divided into six and shown as IC3301 1 6 IC3301 6 6 in this Digital Main Schematic Diagram Section 1 NOTE Comparison Ch...

Page 48: ...085 J086 J087 R557 J088 R558 R559 J089 C520 C521 C522 C523 C524 R560 J090 J091 C525 J092 R562 J093 C527 J094 C528 J095 R565 J096 R566 J097 J098 R34 R569 J481 R35 J099 J482 J483 C531 C532 J487 R570 R57...

Page 49: ...D GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND P ON 5V P ON 5V P ON 5V PROTECT1 PROTECT1 PROTECT1 PROTECT1 PROTECT1 PROTECT1 ALL 3 3V ALL 3 3V ALL 3 3V ALL 3...

Page 50: ...51 C1852 C1854 C1857 C1858 C1859 SW106B C1860 BC1851 IC1831 C1861 BC1852 IC1832 C1862 C1863 SW107B C1871 T1801 C1872 C1873 Q1871 D1851 D1852 D1853 D1854 D1855 R1851 R1852 R1853 D104 R1854 R1855 D105 R...

Page 51: ...3 SW107B C1871 T1801 C1872 C1873 Q1871 D1851 D1852 D1853 D1854 D1855 R1851 R1852 R1853 D104 R1854 R1855 D105 R1856 R1857 D107 R1858 R1859 C1882 C1883 C1884 Q1882 Q1883 Q1884 D1871 D1872 D1873 D1874 R1...

Page 52: ...observed at Waveform check points Shown in Schematic Diagram S VIDEO Y 0 2V 20 s S VIDEO C 0 2V 20 s VIDEO Y 0 2V 20 s 20 s VIDEO Pr 0 2V 20 s VIDEO Pb 0 2V 20 s Pin 6 of CN404 WF5 VIDEO 0 2V 20 s WF...

Page 53: ...n 28 of CN404 WF10 Pin 26 of CN404 AUDIO L 0 5V 0 5ms WF7 Pin 22 of CN401 20 s VIDEO G 0 5V 20 s VIDEO R 0 5V 20 s Input PAL Color Bar Signal with 1kHz Audio Signal WF7 WF10 Waveforms to be observed a...

Page 54: ...GND AMP L OUT AUDIO MUTE GND REMOTE LED1 DIF OUT2 GND GND DIF OUT1 IF AGC GND SCL GND SIF SIF GND GND TU CVBS SDA BACKLIGHT SW GND 2 2 CN3701 CN402 1 5 3 9 7 2 4 6 8 10 14 12 18 16 11 13 15 5 3 7 2 4...

Page 55: ...CBA A9 L6 L6 L6 L6 L6 L8 L6 B2 L6 L6 L9 L4 L6 B1 L13 A11 L1 L3 B11 B9 S6 L6 L1 L1 B17 B17 B17 B19 LCD 1 X803 B5 L6 L6 L6 L6 L6 L2 X3301 A3 L16 Junction CBA CL102A CL404 CL402 CL401 CL601 CL3903 CL452...

Page 56: ...13 2 A03P0PEX Packing S4 S3 S1 Tape Packing Tape PP Band Packing Tape Packing Tape S2 S9 S5 X1 Some Ref Numbers are not in sequence X5 S6 Stand Cover Assembly X4 X3 FRONT FRONT X2 AC601...

Page 57: ...4PIN 14PIN 230MM AWG24 UL WX1A03P0 201 CL3903 WIRE ASSEMBLY 51 51PIN LVDS 51 51PIN 320MM AWG32 WX1A03P0 401 L2 SCREW P TIGHT 3X10 BIND HEAD GBHP3100 L4 SCREW S TIGHT M3X8 BIND HEAD GBHS3080 L6 ASSEMBL...

Page 58: ...CHD1AK30B105 C181 CHIP CERAMIC CAP 1608 CH J 100pF 50V CHD1JJ3CH101 C182 CHIP CERAMIC CAP 1608 F Z 0 1 F 50V CHD1JZ30F104 C204 CHIP CERAMIC CAP CH J 330pF 50V CHD1JJ3CH331 C205 CHIP CERAMIC CAP CH J 3...

Page 59: ...ED FILM 0 47 F 310V K LE MX or CTA4740DC001 CAP METALIZED FILM 0 47 F 250V K MPX CTA474EUR001 C606 CERAMIC CAP B K 0 01 F 500V CCD2JKP0B103 Ref No Mark Description Part No C607 CERAMIC CAP B K 0 01 F...

Page 60: ...05 DIODE ZENER 5V6BSB T26 or NDTB5R6BST26 DIODE ZENER HZS5 6NB2TE EQ QDTB0HZS5R6N D306 DIODE ZENER 5V6BSB T26 or NDTB5R6BST26 DIODE ZENER HZS5 6NB2TE EQ QDTB0HZS5R6N D307 DIODE ZENER 5V6BSB T26 or NDT...

Page 61: ...DE 1SS133 T 77 or QDTZ001SS133 DIODE SWITCHING HSS4148TE E or QDTZ0HSS4148 DIODE SWITCHING 1N4148 F0021 NDTZ01N4148F D555 SWITCHING DIODE 1SS133 T 77 or QDTZ001SS133 DIODE SWITCHING HSS4148TE E or QDT...

Page 62: ...R KTC3198 Y AT P or NQSYKTC3198P Ref No Mark Description Part No TRANSISTOR KTC3199 GR AT P or NQS4KTC3199P TRANSISTOR KTC3198 GR AT P or NQS4KTC3198P TRANSISTOR 2SC1815 Y TE2 F T or QQSY2SC1815F TRAN...

Page 63: ...TOR 2SC5343G AT or NQSG02SC5343 NPN TRANSISTOR 2SC5343MG AT or NQSG2SC5343M NPN TRANSISTOR 2SC5343M Y NQSY2SC5343M Ref No Mark Description Part No RESISTORS R12 CHIP RES 1 10W J 100 or RRXAJR5Z0101 RE...

Page 64: ...Mark Description Part No RES CHIP 1608 1 10W J 75 RRXA750YF002 R334 CHIP RES 1608 1 10W 0 or RRXAZR5Z0000 RES CHIP 1608 1 10W J 0 RRXA000YF002 R335 CHIP RES 1 10W J 100 or RRXAJR5Z0101 RES CHIP 1608...

Page 65: ...J 1 0M RRX4105YF004 R622 A RES CHIP 3216 1 4W J 1 0M or RRX4105HH034 A RES CHIP 3216 1 4W J 1 0M or RRX4105YF004 Ref No Mark Description Part No A CHIP RES 1 4W J 1M RRX4JR7Z0105 R622 B CHIP RES 1 4W...

Page 66: ...ORANGE 01 MTJ 032 04B 76 FE JXRJ010LY029 JK210 JACK SW DIN PCB S 04 DIN 417HA 01 or JYEJ040YUQ03 JACK SW DIN PCB S 04 MDC 076H A LF JYEJ040LY002 JK211 JACK RCA PCB S YELLOW 01 RCA 101H YL or JXRJ010Y...

Page 67: ...or CEE222KSN002 CAP ELE 2200 F 35V M 85 CEE222TEP002 C1863 ELECTROLYTIC CAP 1 F 50V M CE1JMASDL1R0 C1871 CAP CERAMIC AX 0 01 F 50V F Z CA1J103TU062 C1872 POLYESTER FILM CAP PB FREE 0 047 F 100V J or...

Page 68: ...ion Part No R1805 RES CARBON FILM T 1 4W J 39k or RCX4393T1001 RES CARBON FILM 1 4W J 39k RCX4393FS002 R1806 RES CARBON FILM T 1 4W J 390 or RCX4391T1001 RES CARBON FILM 1 4W J 390 RCX4391FS002 R1807...

Page 69: ...SWITCH SKQSAB or SST0101AL038 TACT SWITCH TC 1104 H 5 0 or SST0101DNG02 TACT SWITCH KSM0612B SST0101HH003 SW105B TACT SWITCH SKQSAB or SST0101AL038 TACT SWITCH TC 1104 H 5 0 or SST0101DNG02 TACT SWITC...

Page 70: ...LH8 M40BB LT8 M40BB A03P0EP P1EP 2010 04 23...

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