LG SH32PH-CZ Service Manual Download Page 56 | Manualshive

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5-1

SECTION 5. SPEAKER PART

1. SH32PH

• CENTER SPEAKER(SH32PH-CZ)

A70

A70A

A70B

751

753

752

753

751

750

755

756

753

757

758

754

WIRE70

Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

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Summary of Contents for SH32PH-CZ

Page 1: ...SH32PH FZ SH32PH CZ SH32PH SZ SH32PH WZ SERVICE MANUAL P NO AFN32634330 JULY 2007 DVD CD RECEIVER SERVICE MANUAL MODEL XH T3029S SH32PH FZ SH32PH CZ SH32PH SZ SH32PH WZ Website http biz lgservice com Internal Use Only ...

Page 2: ... WIRING DIAGRAM 2 4 BLOCK DIAGRAM 2 6 CIRCUIT DIAGRAMS 2 8 PRINTED CIRCUIT DIARGAMS 2 24 SECTION 3 DVD AMP PART ELECTRICAL TROUBLESHOOTING GUIDE 3 1 DVD AMP CIRCUIT DIAGRAMS 3 24 SECTION 4 EXPLODED VIEWS 4 1 SECTION 5 SPEAKER PART 5 1 SECTION 6 REPLACEMENT PARTS LIST 6 1 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 3: ...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 should be used taking care not to disto...

Page 4: ...pply 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 leakage the metal part of the soldering iron should be...

Page 5: ... 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 materials 7 Immediately before removing the p...

Page 6: ... appropriate position and make changes Press pause key once Change will be applied when power OFF ON NAME OPT 1 OPT 2 OPT 3 OPT 4 OPT 5 OPT 6 OPT 7 OPT 8 OPT 9 OPT A OPT B OPT C OPT D OPT E OPT F OPT G HEX 55 41 40 FF 52 05 FC 31 4D 00 00 00 00 00 00 00 DETECT NEW EEPROM OPTION EDIT SCREEN Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use ...

Page 7: ...ate position and make changes Press ENTER key once FLD write ok or up ok Remote control 2 Front STOP push same timing FLD display E2P CLR or EP CLR Auto power off NAME HEX OPT 1 16 OPT 2 C2 OPT 3 14 OPT 4 00 OPT 5 00 DETECT NEW EEPROM OPTION EDIT SCREEN Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 8: ...00 Hz AM MW Tuning Range 522 1 620 kHz or 520 1 720 kHz Intermediate Frequency 450 kHz AMPLIFIER Stereo mode 45W 45W Rated Output Power 30W 4 Ωat 1 kHz THD 10 Surround mode Front 45W 45W Rated Output Power 30W THD 10 Center 45W Surround 45W 45W Rated Output Power 30W 4 Ωat 1 kHz THD 10 Subwoofer 75W Rated Output Power 60W 8 Ωat 30 Hz THD 10 Inputs AUX IN MIC SPEAKERS Front Speaker Center speaker R...

Page 9: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 10: ...es Yes Yes Yes No No No No Does red power led turn on Check power supply circuit Is power on Check tracking servo circuit Does it play Check audio circuit Does it output audio Check laser circuit Check focus circuit Check disc Does red power led turn on Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 11: ...D turn off Check if PN1301 is ok Is the Digitron on correctly Check if the front power is ok 2 Check if all buttons are ok Check if the remote control is ok Check if RM301 is ok Yes Yes Yes Yes Yes Yes No No No No No 1 2 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 12: ...Yes 1 Resolder or Replace RM301 Check if the power part of the front is ok Check if the remote control waveform of PN3101 pin11 is ok Check if RM301 voltage is ok 5V Refer to power SMPS No Check RM circuit Refer to MICOM circuit Yes No Yes No Yes 2 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 13: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 14: ...2 4 2 5 WIRING DIAGRAM 061026 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 15: ...2 6 2 7 BLOCK DIAGRAM 061026 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 16: ...TION OF THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE IS PRINTED NOTE 1 Shaded parts are critical for safety Replace only with specified part number 2 Voltages are DC measured with a digital voltmeter during Play mode NOTE Warning NOTE Parts that are shaded are critical NOTE With respect to risk of fire or NOTE electricial shock ...

Page 17: ...2 10 2 11 2 µ COM MAIN CIRCUIT DIAGRAM 061026 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 18: ...2 12 2 13 3 MOTOR SERVO CIRCUIT DIAGRAM 061026 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 19: ...2 14 2 15 4 I O CIRCUIT DIAGRAM 061026 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 20: ...2 16 2 17 5 MIC CIRCUIT DIAGRAM 061026 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 21: ...2 18 2 19 6 FRONT JACK CIRCUIT DIAGRAM 061026 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 22: ...2 20 2 21 7 FRONT CIRCUIT DIAGRAM WITH RDS 061026 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 23: ...2 22 2 23 8 FRONT CIRCUIT DIAGRAM WITHOUT RDS 061026 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 24: ...2 24 2 25 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD DIAGRAM TOP VIEW Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 25: ...2 26 2 27 MAIN P C BOARD DIAGRAM BOTTOM VIEW Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 26: ... C BOARD NOTE Warning Parts that are shaded are critical With respect to risk of fire or electrical shock Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 27: ... 30 2 31 3 FRONT JACK P C BOARD 4 FRONT P C BOARD WITH RDS 5 FRONT P C BOARD WITHOUT RDS Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 28: ...n SLED moves to inner position 1 Judge whether have disc and disc type 2 Jump to related disc reading procedure 1 Execute Pressed Key IR Key 2 System operation routine loop 1 Stop Playback Open Tray 2 Display tray open message LOGO POWER ON Tray closed SLED at inner side Recieve OPEN CLOSE Key Receive CLOSE Key Copyright 2007 LG Electronics Inc All right reserved Only for training and service purp...

Page 29: ...eck system reset circuit 3 Check FLASH R W enable signal PRD RWR 4 Check FLASH Memory related circuit Check the AC voltage Power PCBA 110V or 220V Update FLASH successfully Are 3 5V and 5V DC outputs normal on main PCBA Are the DC Voltage outputs OK 12V 5 6V 3 5V 5V 7V 34V TEST A Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 30: ...EN CLOSE switch Check the Tray control IO pins on ES8380 Check the Tray control MOTOR SERVO circuit IC401 Show LOGO Does Tray move inside when it is not at closed position Flash Memory operates properly SDRAM works properly ES8380 VIDEO outputs properly Check AV cable connection between main PCBA and loader MECHA Normal OPEN_SW CLOSE_SW signal Normal IN_SW OUT_SW signal Normal LOAD LOAD signal B C...

Page 31: ...e amp circuit on motor driver Motor Driver DRV_MUTE pin is high Motor Driver DRV_MUTE pin is High SLED and SLED output properly Check cable connection with pick up head Check Focus connection on ES8380 and motor driver Check the amp circuit on motor driver Proper Focus outputs to motor dricer Proper F F outputs Yes Yes Yes Yes Yes Yes Yes No No No No No No Copyright 2007 LG Electronics Inc All rig...

Page 32: ... the RF connection between IP9009 and ES8380 Check the cable connection between spindle and main PCB Check cable connection between transistor output and pick up head DVDLD or CDLD output property Disc ID is correct Does spindle rotate Collector voltage of power transistor is OK Q405 Q406 Proper RF signal on ES8380 Proper SPINDLE signal on ES8380 SPNP SPNN output properly Yes Yes Yes Yes Yes Yes Y...

Page 33: ...Check cable connection on pick up head Check RF signal waveform Check CD_DVDCT connection between IP9009 and ES8380 Proper signals on A B C D of ES8380 Track On OK Disc Playback Proper CD DVDCT signal on ES8380 Proper TRACK signal on ES8380 TR TR output properly Proper CD DVDCT signal on ES8380 Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No Copyright 2007 LG Electronics Inc All right reserve...

Page 34: ...e related circuit of PWM Check Audio out Pins 54 55 58 59 61 62 67 68 70 71 74 75 Check Digital Amp circuit IC702 IC703 PWM IC received correct data stream Normal PWM IC out IC701 TEST END Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 35: ...r circuit Check IC101 reset waveform Check 3 3V line Check power section circuit NO Check power part of Main B D Check oscillator of X101 Check if IC101 Pin41 is high Check if IC101 Pin15 16 47 are high 5V Check if IC101 Pin1 is high Replace IC101 NO NO Check if DVD an audio micom insert is OK Check Power YES Check DVD Module YES Check SMPS YES YES YES YES YES YES YES Copyright 2007 LG Electronics...

Page 36: ...1 ES8380 main clock is at 27MHz X501 3 8V 27MHz FIG 1 1 2 ES8380 reset is high active PWR_CTL SYSTEM µ COM IC101 PIN2 5 2VA Power Cord in DVD_RESET IC101 PIN 41 MRST IC501 PIN 203 FIG 1 2 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 37: ...C502 PIN 38 DCLK 93MHz Vp p 2 2 Vmax 2 7V FIG 2 1 3 Flash R W enable signal during download Downloading FRD IC503 PIN 28 FWR IC503 PIN 11 FIG 1 4 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 38: ... CLOSESW P401 PIN4 OPEN IC401 PIN 1 CLOSE IC401 PIN 2 FIG 3 1 2 Tray close waveform OPENSW P401 PIN3 CLOSESW P401 PIN4 OPEN IC401 PIN 1 CLOSE IC401 PIN 2 FIG 3 2 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 39: ...IC401 PIN 21 SLED 4 7V 3 6V 1 9V IC401 PIN 17 SLED 5 3V 3 7V 2 5V IC401 PIN 18 FIG 4 1 3 Tray open waveform OPENSW P401 PIN3 CLOSESW P401 PIN4 OPEN IC401 PIN 1 CLOSE IC401 PIN 2 FIG 3 3 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 40: ... 13 F 4 0V 3 6V 3 2V IC401 PIN 14 FIG 5 1 6 LASER POWER CONTROL RELATED SIGNAL NO DISC CONDITION DVD MDI 0V 180mV IC501 PIN 152 DVDLDO501 5 0V 3 5V IC501 PIN 149 CDLDO 5 0V 3 6V IC501 PIN 150 FIG 6 1 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 41: ...3 RF IC501 PIN 160 FIG 7 2 DVD 7 DISC TYPE JUDGEMENT WAVEFORMS F IC401 PIN 13 CD_DVDCT IC501 PIN 133 RF IC501 PIN 160 FIG 7 1 DVD Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 42: ...VDCT IC501 PIN 133 RF IC501 PIN 160 FIG 7 3 CD F IC401 PIN 13 CD_DVDCT IC501 PIN 133 RF IC501 PIN 160 FIG 7 4 CD Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 43: ...01 PIN 13 F IC401 PIN 14 FIG 8 2 CD 8 FOCUS ON WAVEFORMS CD_DVDCT IC501 PIN 133 FOO IC501 PIN172 F IC401 PIN 13 F IC401 PIN 14 FIG 8 1 DVD Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 44: ...501 PIN 156 SP 3 6V 4 8V IC501 PIN 155 FIG 9 1 10 TRACKING CONTROL RELATED SIGNAL System checking CD_DVDCT IC501 PIN 133 TRO IC501 PIN 174 TR IC401 PIN 12 TR IC401 PIN 11 FIG 10 1 DVD Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 45: ... TR IC401 PIN 12 TR IC401 PIN 11 FIG 10 2 CD 11 ES8380 VIDEO OUTPUT WAVEFORMS 1 Full colorbar signal COMPOSIT IC501 PIN 110 FIG 11 1 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 46: ...9 2 Y IC501 PIN 113 FIG 11 2 1 Audio L R FIG 12 1 12 AUDIO OUTPUT FROM PWM IC IC701 PIN 1 7 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 47: ...K IC501 PIN 124 LRCK IC501 PIN 117 ASDATA3 2 Audio related Signal ADATA0 IC501 PIN 118 FIG 12 2 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 48: ...19 TP610 3 R612 TP603 or R613 TP604 4 R610 TP601 or R611 TP602 5 R614 TP605 or R615 TP606 6 R616 TP607 or R617 TP608 13 DVD AMP WAVEFORMS Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 49: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 50: ...061026 3 23 3 24 DVD AMP CIRCUIT DIAGRAM 1 MPEG CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 51: ...061026 3 25 3 26 2 DSP AMP CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 52: ...THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE C C 275 465 A50 A43 280 273 283 P3502 279 273 CABLE1 465 A47 300 A46 473 463 463 463 463 A26 463 250 A44 261 260 SECTION 4 EXPLODED VIEWS Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 53: ...002 003 A01 020 018 014 013 017 435 012 A26 019 012 440 015B 015A 015 016 A02 439 012A 012A 010 432 030 025 024 439 431 435 430 021 036 A03 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 54: ...ING 803 MICRO PHONE 827 832 DISC 824 ANTENNALOOP AM 825 ANTENNA FM WIRE70 CENTER GREEN 4M WIRE80 FRONT R CH RED 4M WIRE81 FRONT L CH WHITE 4M WIRE60 REAR R CH GRAY 10M WIRE61 REAR L CH BLUE 10M 861 4mm SCREW SPEAKER ACCESSROY ASS Y 835 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 55: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 56: ... PART 1 SH32PH CENTER SPEAKER SH32PH CZ A70 A70A A70B 751 753 752 753 751 750 755 756 753 757 758 754 WIRE70 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 57: ...FZ A80 A80A A80B 850 851 852 853 852 855 853 855A 855B 854 853 856 862 858 857 859 853 860 861 A80C WIRE80 WIRE81 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 58: ...HS 96IA REAR SPEAKER SH32PH SZ A60 650 651 652 654 656 655 653 A60B A60A WIRE60 WIRE61 5 3 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 59: ...2 LHS 76IB PASSIVE SUBWOOFER SH32PH WZ A90 951 950 952 953 954 WIRE90 5 4 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

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