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LG FA166, Руководство по обслуживанию

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3-20

ELECTRICAL TROUBLESHOOTING GUIDE

9. POWER AMP PART CHECK

YES

YES

YES

YES

YES

YES

Power AMP part check

OK

Refer to SMPS troubleshooting.

Check each line resistor output voltage.

Replace the coil.

Check each IC702 Pin25,26,55,56

input voltage.

Check PWM modulator input

each Pin3, 4, 10, 11.

Power IC702, 

Pin28,29,36,37,44,45,52,53 output.

NO

NO

NO

CN702 

Pin1: +12V Pin2,3: 25V

Check

IC702 Pin25,26,55,56 :+12V

input.

Check output line coil.

Содержание FA166

Страница 1: ... MANUAL MODEL FA166 FA166 FAS166F CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL FA166 FA166 FAS166F SERVICE MANUAL P NO AFN74972260 MARCH 2011 Website http biz lgservice com Internal Use Only ...

Страница 2: ...CONTENTS SECTION 1 SUMMARY SECTION 2 CABINET MAIN CHASSIS SECTION 3 ELECTRICAL SECTION 4 REPLACEMENT PARTS LIST 1 1 ...

Страница 3: ...SECTION 1 SUMMARY CONTENTS SERVICING PRECAUTIONS 1 3 ESD PRECAUTIONS 1 5 SERVICE INFORMATION FOR EEPROM 1 6 PROGRAM DOWNLOAD GUIDE 1 7 SPECIFICATIONS 1 10 1 2 ...

Страница 4: ... the eyes Absolutely never permit laser beams to enter the eyes Also NEVER switch ON the power to the laser output part lens etc of the pick up if it is damaged 5 Cleaning the lens surface If there is dust on the lens surface the dust should be cleaned away by using an air bush such as used for camera lens The lens is held by a delicate spring When cleaning the lens surface therefore a cotton swab...

Страница 5: ...eplacing a component part first disconnect the power supply lead wire from the unit 2 All equipment measuring instruments and tools must be grounded 3 The workbench should be covered with a conductive sheet and grounded When removing the laser pick up from its conductive bag do not place the pick up on the bag This is because there is the possibility of damage by static electricity 4 To prevent AC...

Страница 6: ... damage ESD devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ESD devices 6 Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam aluminum foil or comparable conductive materia...

Страница 7: ... position and make changes with Rmc REPEAT key Press STOP key FLD write ok Remote control Front STOP push same timing FLD E2P CLR Completed NAME OPT 0 OPT 1 OPT 2 OPT 3 OPT 4 OPT 5 OPT 6 OPT 7 OPT 8 OPT 9 DETECT NEW EEPROM OPTION EDIT SCREEN HEX 09 00 00 00 00 81 90 10 E0 08 1 6 SERVICE INFORMATION FOR EEPROM ...

Страница 8: ... download the file to your set Caution When downloading the file you should neither unplug the usb device change to the other function nor power off the device Usb device must be unplugged when the downloading process is completed ON VFD DISPLAY SCREEN NO USB Insert usb device at usb function READ FIRMWARE WRITE 00 100 UPDATED POWER OFF AUTOMATICALLY When completed remove usb device 1 7 PROGRAM DO...

Страница 9: ...software then download the file to your set Caution When downloading the file you should neither unplug the usb device change to the other function nor power off the device Usb device must be unplugged when the downloading process is completed ON VFD DISPLAY SCREEN NO USB Insert usb device at usb function READ FIRMWARE FINISH UPDATED POWER OFF AUTOMATICALLY When completed remove usb device 1 8 ...

Страница 10: ...software then download the file to your set Caution When downloading the file you should neither unplug the usb device change to the other function nor power off the device Usb device must be unplugged when the downloading process is completed ON VFD DISPLAY SCREEN NO USB Insert usb device at usb function READ FIRMWARE WRITE 00 100 UPDATED POWER OFF AUTOMATICALLY When completed remove usb device 1...

Страница 11: ...od DC 5 V 1 A INPUTS OUTPUTS PORT IN 0 5Vrms 3 5 mm stereo jack TUNER FM Tuning Range 87 5 to 108 0 MHz or 87 50 to 108 00 MHz AMPLIFIER Stereo mode 80 W 80 W 4Ω at 1kHz CD Frequency Response 40 to 20 000 Hz Signal to noise ratio 75 dB Dynamic range 80 dB FRONT SPEAKER Type 3 Way 4 speaker Impedance Rated 4 Ω Input Power 80 W Max Input Power 160 W Net Dimensions W x H x D 132 x 320 x 300 mm Net We...

Страница 12: ...ECTION 2 CABINET MAIN CHASSIS CONTENTS EXPLODED VIEWS 2 1 1 CABINET AND MAIN FRAME SECTION FA166 2 3 2 DECK MECHANISM SECTION SCP 03B 2 5 3 PACKING ACCESSORY SECTION 2 7 4 SPEAKER SECTION FAS166F 2 8 2 1 ...

Страница 13: ...2 2 MEMO ...

Страница 14: ...BLE2 CABLE4 SMPS FRONT AMP MAIN iPod USB B CN001 464 464 462 462 445 462 265 462 462 462 462 A26 H 269 271 252 273 272 468 EXPLODED VIEWS 1 CABINET AND MAIN FRAME SECTION FA166 NOTES THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE ...

Страница 15: ...2 5 2 6 2 DECK MECHANISM SECTION SCP 03B A26 001 004 017 002 003 005 006 007 008 007 009 012 011 014 013 016 015 010 024 025 024 025 024 025 024 025 035A 030 432 033 032 031 431 021 A30 035 435 036 ...

Страница 16: ...2 7 801 Owner s Manual 804 Bag 802 Box 808 Battery AAA 900 Remote Control 818 Stereo Cable 825 FM Wire Antenna 803 Packing AA A 3 PACKING ACCESSORY SECTION ...

Страница 17: ...2 8 A60R A60L 4 SPEAKER SECTION FAS166F ...

Страница 18: ...TION CHECK 3 21 11 USB FUNCTION CHECK 3 22 12 CD FUNCTION CHECK 3 23 WAVEFORMS 3 24 1 SERVO 3 24 2 MOTOR DRIVE 3 24 3 AUDIO PATH 3 25 4 ADC 3 26 5 IPOD 3 26 6 USB 3 27 7 CRYSTAL 3 27 WIRING DIAGRAM 3 29 BLOCK DIAGRAMS 3 31 1 MAIN BLOCK DIAGRAM 3 31 2 SMPS BLOCK DIAGRAM 3 33 CIRCUIT DIAGRAMS 3 35 1 SMPS CIRCUIT DIAGRAM 3 35 2 MAIN MICOM CIRCUIT DIAGRAM 3 37 3 MAIN ADC IPOD CIRCUIT DIAGRAM 3 39 4 MA...

Страница 19: ...e clockwise for the volume up The volume level LEDs around the master volume will be turned on more and more while turning it clockwise for the volume up YES NO Is there any sound from the selected input source Portable USB TUNER or CD Disc Refer to a device s instruction manual and then check if there is sound output from it connecting another audio system YES NO Are the sound spectrum level LEDs...

Страница 20: ... source Refer to a portable device s instruction manual and then check if there is sound output from it connecting another audio system YES NO Are the sound spectrum level LED s on the left and right side of the front panel being changed up and down according to the sound input gain The sound spectrum level LED s will be turned on off repeatedly at regular intervals A speaker cable might be short ...

Страница 21: ...one press PALY button and turn the master volume clockwise for the volume up The volume level LEDs around the master volume will be turned on more and more while turning it clockwise for the volume up YES NO Is there any sound from iPod or iPhone Refer to a device s instruction manual and then check if there is sound output from it connecting another audio system YES NO Are the sound spectrum leve...

Страница 22: ...t horizontal YES NO Is the signal strength of the radio station too week Make sure to tune the station manually YES NO Are the sound spectrum level LED s on the left and right side of the front panel being changed up and down according to the sound input gain The sound spectrum level LED s will be turned on off repeatedly at regular intervals A speaker cable might be short circuited with the chass...

Страница 23: ...he owner s manual YES NO After selecting a track number using the SCAN or DISC button press PLAY button and turn the master volume clockwise for the volume up The volume level LEDs around the master volume will be turned on more and more while turning it clockwise for the volume up YES NO Is the sound quality good to listen to the music Make sure to clean CD discs with a commercially available cle...

Страница 24: ...he speaker cables connected correctly between the speaker terminals on the unit and the speakers Make sure to connect the cables to each specified connector tightly on the unit YES NO The sound is output from the speakers Sound OK NO YES ...

Страница 25: ... sure to check the compatible USB device and the supported MP3 WMA music file requirement Refer to the owner s manual YES NO After selecting a track number using the SCAN button press PLAY button and turn the master volume clockwise for the volume up The volume level LEDs around the master volume will be turned on more and more while turning it clockwise for the volume up YES NO Are the sound spec...

Страница 26: ...oblem referring to the service manual YES NO Is the Standby LED turned off after pressing the Power button on the remote control Replace the batteries with new ones if the remote control doesn t work YES NO Are the messages displayed in the following order on VFD HELLOW VOLUME 15 FUNCTION The SMPS might be not able to supply the power to drive the VFD Refer to the service manual to fix it YES NO I...

Страница 27: ...eshoot Countermeasure 1 Check X100 Crystal If it does not oscillate change X100 2 Check IC103 Reset IC IF its output voltage is not more than 2 7 V change IC103 3 Check IC101 Micom After Power is ON if the 63pin of IC101 is not High change IC101 But the new μ com IC need to write program 1 3 Service hint Any picture Remark X100 IC103 MAIN board top view ...

Страница 28: ...assemble AMP IC heat sink heat sink screw must be assembled tightly 2 Still NG please check CN902 Pin1 12 V Pin 2 3 25 V 3 If it is not appear Vcc change SMPS board assembly 4 After changing it if Vcc is still NG check CN901 Pin8 P CTRL 5 CN901 Pin8 Vcc is not appear change μ com IC IC101 2 3 Service hint Any picture Remark IC101 MAIN board top view CN901 CN902 SMPS board top view Heatsink AMP boa...

Страница 29: ...DETECT When USB insert USB no detect on the unit 3 1 Solution Replace IC350 3 2 How to troubleshoot Countermeasure 1 Please check IC350 Pin3 5 V 2 If it is not OK replace IC350 3 3 Service hint Any picture Remark IC350 JACK board top view ...

Страница 30: ... will not boot up normally 4 1 Solution Replace X500 4 2 How to troubleshoot Countermeasure 1 Please check the soldering status of 12 MHz crystal X500 2 Please check the frequency of 12 MHz crystal X500 3 If the crystal doesn t oscillate replace X500 4 After changing it if the set is still not booting replace MAIN board assembly 4 3 Service hint Any picture Remark X500 MAIN board top view ...

Страница 31: ... Check short of CN902 line Check short of CN901 CN902 line Check the DC V of C912 C920 C914 If DC V is in 14 19V and it is steady Check the fuse F901 Check the DC V of C959 C960 If DC V is 3 7V Check the DC V of C901 if DC V is over 400 V Check the DC V of C962 C963 If DC V is in 31 68V NO NO NO NO NO NO Check IC901 IC954 YES YES YES YES YES YES OK ...

Страница 32: ...ING GUIDE 2 P SENS 3 VKK CHECK YES YES μ COM P SENS VKK check OK OK Check power circuit troubleshooting Check power circuit troubleshooting NO NO Check Pin5 6 of CN901 if DC V is over 6 2V Check Pin14 of CN901 if DC V is over 31V ...

Страница 33: ...N001_Pin1 2 NO NO Check If input voltage of IC100 is over 3 7 V Check both end voltage of IC100 AZ7027 NO YES YES YES YES YES NO 4 μ COM PART CHECK 1 OK OK 5 μ COM PART CHECK 2 YES YES YES YES μ com part check 2 OK Refer to SMPS troubleshooting Check If IC101_Pin14 40 55 89 are 3 3 V Check the operation X100 12 MHz X101 32 768 kHz Replace D100 D101 NO NO Check if voltage of CN001_Pin1 2 is 3 7V Ch...

Страница 34: ...if both end voltage of FL FL are 24V 28V VKK 31V Check FFC cable or refer to SMPS troubleshooting Replace IC101 FLD light on Replace IC301 Check CN301 Pin3 4 5 voltage input NO NO NO NO NO NO Check each Pin voltage Check IC101 Check IC301 Check IC301 Pin9 3 3V Pin50 VKK 31V Check data communication IC101 IC301 Pin27 Pin3 STB Pin26 Pin2 DATA Pin28 Pin1 CLK YES YES YES YES YES YES YES YES YES YES YE...

Страница 35: ...ouch part check OK Check the FFC cable or refer to SMPS part Replace IC302 Check TOUCH_IRQ signal IC302 Pin11 When you touch pad it is Low When you non touch pad it s High Check the connection or replace IC101 NO NO NO IC302 Pin28 voltage 3 3 V OK TOUCH_DAT CLK signal OK ...

Страница 36: ...eplace related resistor Replace IC500 Replace IC701 Check CN700 Pin1 5 V Check X700 19 2 MHz operation NO NO NO NO NO NO Check line resistor output SDA R153 SCL R155 RST R131 Check IC500 DVD MPEG I2S output Check IC701 PS9851 IC101 Pin38 PWM RESET Pin85 PWM SDA Pin84 PWM SCL output Check IC701 PS9851 data input Pin14 PWM wave Check PWM modulator output FL Pin27 28 FR Pin30 31 other output NO NO NO...

Страница 37: ...er to SMPS troubleshooting Check each line resistor output voltage Replace the coil Check each IC702 Pin25 26 55 56 input voltage Check PWM modulator input each Pin3 4 10 11 Power IC702 Pin28 29 36 37 44 45 52 53 output NO NO NO CN702 Pin1 12V Pin2 3 25V Check IC702 Pin25 26 55 56 12V input Check output line coil ...

Страница 38: ... Tuner function check Refer to PWM part Check tuner module voltage Pin4 3 3 V Check or replace IC200 Replace IC500 Check IC200 CS5346 _Pin41 42 43 44 output waveform Replace the module Check IC500 Pin156 157 161 162 I2S signal NO NO NO Check tuner module TU100 operation Waveform OK OK ...

Страница 39: ...check Check USB jack CN350 Display READ Check USB audio file in USB device MP3 WMA file is playable Check CN104 Replace IC500 Check USB_5V Check IC500 Pin116 117 Display NO FILE Plug in USB device Display NO USB NO NO NO NO Check USB D D R188 R189 YES YES YES YES YES YES YES ...

Страница 40: ...PD CN402 Pin20 about 180 mV Is motor impedance OK About 12 Ω Is no signal at SPK Check IC402 Check OPU Pick up module Check loading motor Can the DISC insert DISC reading is OK Can t see the signal at Pin34 35 36 of IC400 Check IC500 Input Output and control line Can t see the signal 16 9344 MHz at Pin31 of IC400 NO NO NO NO NO NO NO NO NO NO Is LOAD OK Focusing Tracking Sled signal is OK YES YES ...

Страница 41: ...1 CD 16M IC400 Pin31 Figure 2 1 SP SP FOR DRIVING SPINDLE MOTOR IC401 Pin17 18 Figure 1 2 SERVO WAVEFORM FE TE FOD RF IC400 Pin61 62 63 IC401 Pin1 Figure 2 2 SL SL FOR DRIVING SPINDLE MOTOR IC401 Pin11 12 FE TE FOD RF SP SP SL SL 2 4 5 3 8 9 1 6 7 ...

Страница 42: ...IO PATH Figure 3 1 CD_I2S IC400 Pin34 35 36 Figure 3 3 IC701 PWM IC Pin4 5 6 Figure 3 2 IC500 Pin86 87 88 Figure 3 4 AUDIO_L R BCK BCK AUDIO_L AUDIO_R BCK LRCK LRCK LRCK DATA DATA DATA 10 11 12 13 14 15 16 17 18 ...

Страница 43: ...5 IPOD Figure 4 1 ADC I2C IC200 Pin1 2 Figure 5 1 IPOD SIGNAL CN250 Pin6 9 15 17 Figure 4 2 ADC I2S IC200 Pin41 42 43 44 MCK CLK BCK LRCK DATA IPOD_DET IPOD_READY IPOD_RX IPOD_L DATA 19 20 25 26 27 28 21 22 23 24 ...

Страница 44: ...3 27 6 USB 7 CRYSTAL Figure 6 1 USB D D IC500 Pin116 117 Figure 7 1 12 MHZ CRYSTAL IC101 Pin9 10 IC500 Pin111 112 D D XI XO 29 30 31 32 ...

Страница 45: ...3 28 MEMO ...

Страница 46: ...P CN702 SMPS IPOD DOCKING CN103 CN700 CN901 CN001 CN3P2 CN104 CN250 CN102 FAN CN105 FFC 20P HARNESS 5P HARNESS 15P HARNESS 14P CN402 FFC 16P MAIN LOADER CN403 HARNESS 20P FFC 24P FFC 5P CN404 FFC 4P DAB CN200 HARNESS 9P OPTION CN902 PN900 WIRING DIAGRAM ...

Страница 47: ...C RESET SUBSYQ BUSY R W DAC_MCLK CD_DATA BCK LRCK vwluVjsvzl LRCK BCK MCLK DB 0 15 DMA 0 10 16 93MHZ LPF PWM PS9851 TAS5612 3 3V 32 12V CTL I2C MC4580 X2 DRIVER MC3501 IR KEY I2C TOUCH I2C EEP ROM I2C LC87F5NC8A MICOM 100PIN 32 768kHz 9 8304 MHz Portable Tuner iPod USB Flash 1MB SDRAM 8MB 3 3V 3 3V RESET DI DO CLK CS I2C RESET 3 3V 1 2V 5V 3 3V 2ch ADC 5V 8V 3 3V 3 3VA 3 3V 1 5V 3 3VA Motor IC S80...

Страница 48: ...Gpuw uyGM mps ly RECTIFIER SMOOTHING CIRCUIT y h u z WY htw z z yT u thpu z z yTh W Zt y h u z WX msXGT msYGO U P U XY GO _yXYP mllkGihjr ZU G ju WX Pin14 ju WY w mllkGihjr htwGORPGY_ TZXU O rrP 2 SMPS BLOCK DIAGRAM ...

Страница 49: ...HE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE LG CORPORATION ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT SPECIAL COMPONENTS ARE SHADED ON THE SCHEMATIC FOR EASY IDENTIFICATION THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED THIS WAY IMPLEMENTATION OF THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHAN...

Страница 50: ...3 37 3 38 31 32 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T MICOM EBY61048501 1 REV6 1 2011 02 23 WAVEFORM NUMBER 2 MAIN MICOM CIRCUIT DIAGRAM ...

Страница 51: ...3 39 3 40 24 22 21 23 19 20 28 26 25 27 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T ADC IPOD EBY61048501 2 REV6 1 2011 02 23 WAVEFORM NUMBER 3 MAIN ADC IPOD CIRCUIT DIAGRAM ...

Страница 52: ...3 41 3 42 32 31 29 30 13 14 15 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T MPEG DSP EBY61048501 3 REV6 1 2011 02 23 WAVEFORM NUMBER 4 MAIN MPEG DSP CIRCUIT DIAGRAM ...

Страница 53: ...3 43 3 44 6 7 12 11 10 2 3 5 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T RF SERVO EBY61048501 4 REV6 1 2011 02 23 WAVEFORM NUMBER 4 8 9 1 5 MAIN RF SERVO CIRCUIT DIAGRAM ...

Страница 54: ...3 45 3 46 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T POWER EBY61048501 5 REV6 1 2011 02 23 6 MAIN POWER CIRCUIT DIAGRAM ...

Страница 55: ...3 47 3 48 16 17 18 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T AMP EBY61048601 REV3 2 2010 12 23 WAVEFORM NUMBER 7 AMP CIRCUIT DIAGRAM ...

Страница 56: ...3 49 3 50 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T FRONT EBY61048701 REV4 6 2010 12 23 8 FRONT CIRCUIT DIAGRAM ...

Страница 57: ...3 51 3 52 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T FRONT JACK EBY61048901 REV4 6 2010 12 23 9 FRONT JACK CIRCUIT DIAGRAM ...

Страница 58: ...3 53 3 54 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T IPOD DOCKING EBY61071401 REV4 2 2010 12 23 10 IPOD DOCKING CIRCUIT DIAGRAM ...

Страница 59: ..._IN1 2 2 2 3 3 3 31 VDD_OUT VDD_core 1 08 1 32 1 25 TAS5612PHD IC702 VDD 10 8 13 2 12 01 GVDD 10 8 13 2 12 01 PVDD 16 34 1 25 5 MC4580 IC700 VCC 18 18 12 01 VCC 18 18 12 01 FRONT MC3501 IC301 VDD 2 7 5 5 3 47 CY8C21434 IC302 VDD 1 71 5 5 3 47 I O LM37102D ADJ IC350 Vin 2 25 16 6 4 Vout 1 8 15 5 1 IPOD LM29152D ADJ IC3P1 Vin 2 25 16 6 4 Vout 1 8 15 5 04 Part Location Value MAIN C011 100uF 16V 3 33 ...

Страница 60: ...3 57 3 58 Rev 5 3 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...

Страница 61: ...3 59 3 60 EAX63686102 Rev 3 15 2 SMPS P C BOARD NOTE Warning Parts that are critical with respect to risk of fire or electrical shock ...

Страница 62: ...3 61 3 62 EAX63544601 Rev 3 3 3 AMP P C BOARD TOP VIEW BOTTOM VIEW ...

Страница 63: ...3 63 3 64 EAX63544701 Rev 5 1 4 FRONT P C BOARD TOP VIEW BOTTOM VIEW ...

Страница 64: ...3 65 3 66 EAX63544901 Rev 5 1 EAX63531401 Rev 5 1 5 FRONT JACK P C BOARD TOP VIEW 6 IPOD DOCKING P C BOARD TOP VIEW BOTTOM VIEW BOTTOM VIEW ...

Страница 65: ...3 67 3 68 MEMO MEMO ...

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