Stylish Powerful Portable Boom Box SERVICE MANUAL CAUTION
Contents
1. H 1 H y 1 T i i r H 1 i i H i E i i H 1 H 1 i 1 1 8 1 I i gt i i 8 i 1 i 5 Ss i E 1 i g l i 2 8 4 9 l i i nacen uge Cha i i i H 1 5 H i li 1 ss 1 1 i 5 i H H x ES E Sa 2 1 i SE US i i 1 2 A E 1 1 SS i i 1 m 8 I e eA i Sa e GER i 3 3 R i 28 guy 2 SE l i By 38 Ed 8 1 a 5 i S 3e tU 8 8 i 1 AN e s 4 a S j i 5 ge i i ee 5 i E 2 b ES ES b ear n 3 TA TE esee deed eatin 1 Sy i H ae 1 ere H 1 i 1 S i 1 ke e 1 i s f EES zg i 1 E y d 1 d i i i ox SS w n ang 1 f ES 0s031 1 i l um O00000 bi i we p e A ONE reas EE 9E w n ana 88 EE STE TE ROK AE OR EO ANKE VO AT N AE RAK N EE TREE ERES NA ER ga 08031 L Lal xx Ny E 34617 eng 6z 82021 205031 B ONdvOL F87 1o 8 ew gt A EE PE 20H a ren ER TE 3 031 Dr Wa eee ey gt 3 CE 8 8 sn 254 IC 289 5 TT wu s ls le ls je ls ls les de le ja ls did 383558 EE EES SE T 3 TT mas cw 88288 88 2 2 2 3 ool S i L S 7 m sen B 8 89889893 3 Bo GEU rs S br MM so 8 5 5 5 Erg M II TEM 3 gas E 3 Al D I se E2. l i i i Y i 6 B gt l T AA 3 QNvOB AVIdSIO O 222 E ON AHLY ONVOS een Ol 95 2 SOLNI FOLNDMEINOS i I I Ja Ta I Jo fe K Jo fo lo fe 1 VIVO sg EF a N 11 du BE i H IN YOO een e 1 db H Si et Ngo o y D 2 a Lesen 8 GAN 8 AOL SY LY V ER a H ROSE 2 7649 4307 imn 28 ZR SR lt ER uz AO0L DOLY x ad amp BESET B52 XOL vv hoe az iz 2328 954348222 fet ze MEER ana PL Laus SAS AU dm i i St quo D 8 S i P ane s gt E hd n 5 i To NL a oa P O sos 01 i Elwen jos 1642 1 i ze na Ee E c3 sm 35 DS Peo EE KT EE 12 snas a wun LEE 3 oz iMd se s 440 4na coag OY 440 uma soee T vu DS 1338 01 Logesch ilang E 5 WOOD man 07asn 9 0 as d zaor OL zaor z vem d H er gt SU anr E m d E SL B S i Te y se E y 201 in d Dm o H o S Eb E l um vumm SE Isis i 35 ie DS i xa 0085 DH moos 83 3070 Tig i E d xi 0086 Cl x1 0088 XE v inoivo eres Bo 1L oxsens ao vue i Ol asng a3 vam i 51 ws an ONO d 1 DE aach C uinoa uvn l gt L jones amosan FS EE l 9 Y aoa L D i Loes NN DO 13838 NIVN aoa LY NATION l N sl manm C3 ico i 33 i i FA Y vivacova aa un ES EEN 7e 7 x l E von ava 3 m v LOS 3 aunn v 1 1 x 2 jag oa d ao delddadadadagdas 3 dass 38
3. Ten fen ala 10 0 0 10 GD IO 7098 IO DI EI S SIS 9992 An g D Ol iB aa Daa o M o 9 899 COC ooo a oo om 0010 0 0 0 0 0 0 01 8 A D MIRI CL 454 2 aa J51 aa o A 27 A I B ED D Oo o SEE 2009 6 12 3 29 co OG eara Io ala aaa 150 2007410 thann t Gro Elek a 3 30 Ls it ol oo LGE Internal Use Only 1 2 MAIN P C BOARD DIAGRAM BOTTOM VIEW ll CAME ei d OUD cuc D C C213 Cam JR23 C100 e m LAER E100
4. 12 b _ _ _ _ I ME AE EE me OE OE EE ARS GES dA cV Axa ccc ES C cM EE En U um oer nte R901 si i 2 7 OHM TEN e gt e 9 e S m i R910 C910 C i i 56K 2W 0 010 630V i BD901 I Ee D952 I l A SIWBA60 A C900 UG4D 10 4 E i 68UF 450v9 6 gt e e EN 9 BR ZZ ss D911 mot L C953 C954 R915 Z RLIO4F 40 C 1000UF 25V 1000UF 25V i EE EER EI SS Zus Lo o e e 0 s Zz Wi CN901 RUND 4 1 MA py OS La 2ND 2 d SARSO T WEE i 3 aD oe o ZD910 7UF 50VNCL R953 GND Z 33V gt Cale E NS e e 4 12V S mE 104 T D951 SS ggg FIOKNC E FB910 E ig RL104FNC 1 5KNC 3 uia po Le BEAD 95 3 Poe O 6 NC W a eS am L AN SS Cam Se D950 L950 l Da 8 LT e uge e mucus RL104F OR 8 NC OO N LI O 1UF XCAP C902 C e e o e e 1000PF 400V X z 9 e e 7 Bind SE I a 3 47UF 7 x d 47UF 16V NC __ Foot cx Wa Zz ZZ d nm SS Oo LL R977 l an a i 1 y 100R d C916 e l i 1000P NC 6 I 4 O ad lee ER m cu R3Y6 CM901 SS 103 M ZD911 i 0 1UF XCAP 2 a TV e R956 560 V e e N 1 5K Ma eee e R959 1 2K 5 i R900 NC C956 R957 1 5M 0 5W e TUF 50V xy Eek e Wy e R958 VR901 e N TT ay 3
5. DE OR fee e eem UU UU EIOU peT IED uuu R742 aal 07497 IC SIE an w 89 C DU pir yA 148 o E C764 Pim Je JU UU 2 A E DE U suy Oo Dk ar zo IE Ag 2 Ral CL y N GELY OM V Eat 8218 e LZL8 O Co amp 8918 BLH Ki k IE o RH vela LELI GELY O o UCD eng E S LGE Internal Use Only 3 31 3 32 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 2 SMPS P C BOARD DIAGRAM NOTE Warning Parts that are shaded are critical With respect to risk of fir
6. i 12 i l f T100 TUNER MODULE H i MKODOFHO 806 i i 100p i H Co Um TU RESET i i ee i MAIN_BOARD e ADS N les ZS 12 U 70 8 8 7 R830 ai 15 L L A l Gt e ob Ei S SS SR S 108 c109 ena i E h 2 3 i R831 ai i oct 4 a i 11 cor L i pels Sg me CES Ub 1000NC 10QANG ANN C MAINS L801_ 22uH 51 E 1N4148 o es B 2 2 3 D 1 5 3 3 b a 0 S e 8 2 i s8 I ES 2 ordi 1 2 s zn 5 s S o L802 Rr a S e 1 E RBOO 47K Bik 51K hana al 8 1 ps s08 02 CY i TA XE E De Deng Lon T E cu f BF R208 22uH R801 47K T i 0205 op L RO K cna 0 VE MEN Lei E R221 491 esoo lego y du i IN4148 NS A AUX IN je28 kum baoz OU e ee 472 T ems i C203 NE 10 220K Raas R805 A i 220R WH B C107 i EE 220K 4K7 i R102 L07 2 472 y 0204 Heat Sink e E i ios 3 i 1N4148 A C201 gt d oon S i e e 330pF l 6200 loiad Rees R812 c B i R209 1208 S al 2 4K7 ax7 RB08 C827 r840 1 S gt i R203 U 2200 25 a 682 J 100K Ces oe ate ee ER EE Se MR GE OR i 10K TDA7266SA o sad 73 7 8 8 C830 R204 oons 208 6204 682 OK 013048 1 ka T 1 caos 807 Fang esos PRO can C8t4 CBI5 cag i 472 472 2u2 2u2 w jw w qu re R701 C205 tS 1 R CH 9 Se AES URS 222pF 2 R205 R CH ets e A e e 3 Go 4 1 ol n m ej sj 7 8j sy 4d 3 2 1 al Ley weer DE E amp E 83 2 383528 58 52 x y A TO SPEAKER i 9 5 9 5 u503 G C208 Pot o g o AR mmm 109 18 E op tte 3 104 3 5 3 38 85 8 3 5 8 a
7. AUX R GNO AUX L 108402 c D lt LED502 yen 49 M S nOn EA Eon O E6546 L1 OJR546 EIO O GOOD OOO ODO OO OOO OOO OO OOO OO O SE 062 616lo6lo l AXZO AZ LY DD Shot O Opp 28 N E 990 ep a e 60 aa A AN AID SW503 38888 Oo 2323 lollo lo lo lal OOo pss Hone A za 227 a S SMG S KEE E Voer TIMER LCD501 E LEM LLL Co G 2777 SY 089 Oo Eens O IO Cigso4 R500 En or R584 ITE Caas CO GO ee d cose Q e ech b EM Mom LO O Q SKIP SEARCH TN S SSES DO Gei 2 8 R540 E Ol 7 H Digs50 R505 D SW505 cose D0CAV E LO QO oe STANDBY uso OA Or LGE Internal Use Only SW507 STO CLEARPPRESELS 00 J503 cher S874 KEY PP 1 0 2007410 72 2009 6 12 25588 e 5528 5 t d R583 O DO O LO 03 Q CS D E pi KN200 71 9 6007 1301 1007 05 dd 310138 085 Gia y PAUSE PRESET
8. LGE Internal Use Only 3 8 Copyright O 2009 LG Electronics Inc All right reserved Only for training and service purposes WAVEFORMS OF MAJOR CHECK POINT 1 SPINDLE DRIVE AND MOTOR WAVEFORM es i U704 pinto D BW Limit E aui Volts Div Coarse U704 pin20 E i l U704 pin22 E v Probe e Da U704 pin21 D Invert 2 WHEN CD PLAYING FE EE TE SP WAVEFORM U703 pins2 D e 200MHz U703 pin61 n V WV TS C 1 Volts Div A A Probe U703 pin60 E Vi EE E E AA Invert U704 pin21 B M N ee Te ann Wr j CHI 7 6 44 CH4 200m 10Hz Copyright 2009 LG Electronics Inc All right reserved 3 9 LGE Internal Use Only Only for training and service purposes 3 WHEN CD SEARCHING EE TE FE WAVEFORM l SCH U703 pin61 e 200MHz Volts Div U703 pin62 In U703 pin60 ul 4 WHEN CD PLAYING FD TD WAVEFORM U703 pin14 12 U703 pin13 IE LGE Internal Use Only 3 10 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 5 CD STOP ACTION SLE SP T F WAVEFORM LE Stop Coupling ES BY Limit U704 pin21 n or 200MHz U704 pin20 IB rm Probe U704 pin4 HS U704 pin2 117 4 1 500m CH2 2 00V M 2 50ms I Boy 6 CD READING CD MCK DIN RW BUSY WAVEFORM Coupling U703 pin41 TIT otf U703 pinto IF Me Volts Div se U703 pin20 BJ oom ptite tie daadaa em R
9. YES Y Check pickup movement YES Y Check U704 BA5927FM YES Y Check U703 Check U7O3 pin55 57 gt Check CN723 pin6 7 SL SL YES Check CN703 pin1 2 FEE YES Check CN703 pin19 LD YES Check CN723 pin8 9 SP SP YES Check CN703 pin3 4 T T 3 7 NO NO NO NO NO NO Check JK500 JK501 pin34 Open 3 3V Close OV Defective pickup or U703 U704 Defective pickup or U703 U704 Y Defective pickup or Q701 Defective pickup or U703 U704 Defective pickup or U703 U704 LGE Internal Use Only 16 USB PART Turn on the USB d YES Check CHECKING NO Check connector locking NO Check Power supply circuit NO or USB display CN401 CN705 Q316 USB 5V YES l NO Check CN401 NO Check CN705 NO Check MICOM IC603 PRES es ding i pin2_5V pina 4 D D pin116 117 D D YES Y Playing NO Check U703 NO NE audio m pin55 57 Cheek Hees DIIS 4 YES Y OK Check Power supply YES circuit Q308 NO Check Power supply YES circuit Q302 NO Replace Q308 Replace Q302 Check F301 gt Replace F301 y NO Check SMPS power supply
10. Check or replace R305 R303 Q301 Only for training and service purposes 8 IC600 ABNORMAL NO Refer to power supply no 3 3V lt Check both end voltage Q600 3 3V check or replace Q600 Y YES um NO Check IC606 pin1 is H ene GATIS H Check or replace Q601 YES x NO 4 Check IC604 pin13 is 3 3V Check or replace L600 YES x NO Check IC600 pin1 6 X601 operation gt Check or replace X601 YES Y OK 9 U654 ABNORMAL Check U654 pint CE NO NO Refer to 3 3V d pin6 SCK Aser He pus ED N 9 troubleshooting YES NO lt Check U654 pin2 5 SO SI gt Replace U654 YES YES OK OK 10 IC601 ABNORMAL Check IC601 pin34 CLK NO Check MCU IC603 NO Refer to MCU pin35 CKE voltage 1 2V troubleshooting YES NO lt Check MCU IC603 Replace MCU YES YES OK OK Copyright 2009 LG Electronics Inc All right reserved 3 5 LGE Internal Use Only Only for training and service purposes 11 U503 ABNORMAL Refer to power circuit troubleshooting Check JK601 pin47 48 Vol CLK Vol Data Check or replace U503 NO e Check the power supply to U503 pin24 gt YES A NO Check the SCL SDA data of U503 pin25 26 E YES t NO d Check the control func
11. NO EB O ii 5 amp amp S mo w x om s7 6 BE oe 4 LOENG E god b dsiqg A 3 y ZL30LYLOOZ OSI WE ls l ill 106091 y o m E e 82d Sons 5 S 23 ez3o1zooz ost OO B SS 2 LGE Internal Use Only 3 14 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes BLOCK DIAGRAM Mowe 3NOHd LS YINVIAS 12 M2NV3dS Y ZHO9 0S Pi OV mm TT mun EG JA A ag SANS dd INO J4 psssssssg wove 908 OHAOOOMW LSA 31000W MANN Q8 NIVIN NI 318v180d AINO AI dNV Jemog 9 03 eunjoA wyo g AG ZXC S306v 08 VS99Z4VOL WHO S2INOH12313 OMOIN 1S la i L 90v Z8L8NM 35019 N3d0 AVML K m z 2 LH a kH nan laa neue Wi d9vVv OS z 25 00
12. 2009 LG Electronics Inc All right reserved 2 5 LGE Internal Use Only Only for training and service purposes LGE Internal Use Only 2 6 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes SECTION 3 ELECTRICAL PART TROUBLESHOOTING GUIDE 1 SMPS PART 8 12V D YES NO lt Is the F901 nomal YES Y NO e Is the BD901 nomal d YES NO Is the R901 nomal gt YES i NO lt Is Vcc 9V 25V supplied to IC911 pin5 YES T NO Is the D952 nomal v YES NO d Is the D950 nomal S YES Y Power Line of Main PCB is short 2 P SENS PART Does 4V appear NO NO at U301A E Check U301A gt YES eg NO NO Check JK600 pin21 gt Is the D702 nomal rs YES Y Check IC603 pin58 Copyright 2009 LG Electronics Inc All right reserved 3 1 Only for training and service purposes Replace the F901 Use same type Fuse Replace the BD901 Replace the R901 Is the D911 nomal y NO Check or replace the D911 Replace the D952 Replace the D950 Check D306 NO Refer SMPS 12V Check Replace the D702 LGE Internal Use Only 3 MUTING CIRCUIT MUTE Does High appear N NO NO NO f q Q206 Q208
13. t yA TT YI pAc LRCK Su O DAC BEK AMP MUTE gt 50 H pac wek LIMIT DET gt gt 49 HE DAC DATA VOL DATA OA ve DL L6 C wain reser 11 LED POWER O HL CO MEK MAIN POWER O H cb bN our l s 8 cor co Bck C 43 2 co 8usy CO LRCK IN Ui a HL lt p_scor CD DATOUT a e 72 s800 TX CLOSE 40 3 9800 RX SRST 9 x HA tep pat 38 15 CO MUTE DH x PO Lcp cs 10 OPEN DY gt HU goet usso DE 2 HL soe usB pu DH z H8 Lep wr OPEN CLOSE DET DY o He TU RESET KEY DY o H20 C 8805 PWR 0FF 32 o 21 DM Pip KEYO S El P SENS RDS N 7 PA 16M 3o 23 gt TU SDA Q als Ol24 TU SCL RR DM O Sto 2810 0 25 D 9 IS g rec D gt ize 433 ADC 3V3 L600 8 C644 DUN 10 10 o o yY o R646 4 7K C610 REC R i k 104 R649 4 7K REC L e e 2 5 8 8 x 2 x 878 87 SISI x t C647 e 10 10 7 slo ls alsa hsa Laz Le Las Laa 13 haa r v2 xoo20 2323552852 sl 2555 sg 2 gt y ES 10604 T WM8782 SSOP 2 oa ve 225 5 2 5a28 _222 S858282002 6 Me ED TITISTEIE IE IT 8 971 e 9 9 R6I2 00 Oo C626 E 2 isi 104 SEE R609 100 2 S L605 H ese y 22UH 10 10 5 R652 1K it ER S S S 8 3 d d 9 d 4 2 2 8 1 ABC 3V3 i L602 i 22UH sl n a ee d A 0600 C645 3 K 8550 C631 104 22 10 i Sa SS i 6 R644 t 2 0501 So kaa ADC SEL 9014 28 L 10K b H R626 100K Ress IC600 8 2 Sie 74LVC2
14. Model Type Impedance Hfrequency Response Rated Input Power Max Input Power Net Dimension HxDxd Net Weight SPECIFICATIONS Refer to main label Refer to main label 3 3 kg 524 x 155 x 288 mm Semiconductor laser wave length 780nm 100Hz to 18KHz More than 55dB More than 50dB 87 5 108MHz 128KHz 32 768KHz 100 Hz 10 KHz 7 5 W 7 5 W 500 mV 100 Hz 18 KHz More than 55dB G C40 55 8F 10W 1 Way 1 Speaker 89 120 Hz 20 KHz 8W 10W 42 x 102 x50 mm 240 g Designs and specifications are subject to change without pior notice LGE Internal Use Only 1 6 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes D Z mg SEIN 242209 ZEOES EEODEG ZOU Ra ESO Zu 2 OZOLz 122600 zZITUE xXuO lt KEE uc SE Fue FUL Kiel occa suut Ld AL 92222 T FOFFO o H e o 2 HI SECTION 2 EXPLODED VIEWS CABINET AND MAIN FRAME SECTION SB74 EN A LGE Internal Use Only 2 2 2 1 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 3 2 4 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes e PACKING ACCESSORY SECTION Battery Remote Control Instruction Ass y LE e Packing Bag Packing Box Copyright
15. Q 9 SC OIGMS SKIP SEARCH 60SMS o R510 Did R563 a g 9098 5 OPENZOLOSE O 109800 V e e CIE 0cWe FUNCTION TISMS REC acu D ol USMS Z 3 39 5 CD JACK P C BOARD DIAGRAM HHMS SB 74 CD JAC AAA 4 4 27 Dr A Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 3 40
16. 2a ra T y JU OR x B cast 2 a o 8 a oco SS 8 38 9 2 8 S c R206 100K 1 TT B 15 0852 E C850 ef 10K C207 E R857 R853 15 16 17 18 19 20 21 22 23 24 2 2 7 28 8 ENC R i e e Pi vs pnn D13045 e Kan 220k 9 Lt 1 835 R834 T T 120pF 5 L sP 2 220k c825 C824 c823 ca2 c845 R836 09975 85 aue 0208 R210 Q805 1 2 104 104 104 104 4U7 C820 22K 407 1K Y 4 n sp C855 L e 9014 1 t 472 pe T 210 3 L IN woop Jax 2 5 e e e dd 3 0806 9 120pF 2 R IN A 3 9014 d C898 NN pl C899 2 T ap HEIN E PN702 e 47P gt D e SIS SS R837 RES A R872 OR ND ee Ve RIS 47 AKT mp MANES SV au e D d lt 7 vd So Sage R223 R21 R858 WV L R842 NC VOL4VCC OR 330R 33K D Da O m e NC e e Lei c209 gi oR RB43 C837 caz9 0211 ne 8 100 220 10V 104P 38 A IN4148 ww Es m EIS R222 100P R859 33K 47K c B d T 0303 i ES ANS 0882 s i R s Q R C306 CD48V k t UY 0309 2200 18 MM A m BE GND C305 8772 R309 C317 C303 100 16 MY 6562 150R 4 100 16 C302 amp 1000 16 iw 104 NS R323 Tp 303A R303 15 e 100 16 15 op Di 5 407 R322 TU POWER GND F301 ake ZN 9310 CO POWER d co power E 9014C 9014C 1 2A 25V PSM120 8321 IV 2K2 R320 CGU 2K2 IN4148 om a D END FB301 ET mp R315 0307 0305 1117 3 3V AKT SN 42 GND our DEE wain power E 6 E ma 6303 3 Le U IN e e 4 azv 4 3 3V e e hd 3s R301 100UH Com can Stran 2x 10K NC 5 Lou 104 G R316 E P SENS 6 Nc AA c2 di goen 100K 47 10
17. B gt Check R202 R203 gt Check D205 D204 Check JK601 pin50 i YES NO Check the Low of NO i YES NO MUTE Check the IC603 pin81 HIGH or LOW YES Replace IC603 4 AUDIO ABNORMAL NO lt Check the output of U200 pin1 2 14 15 Check the connection of speakers YES t NO Check the input signal of U200 pin4 12 gt Check the High of U200 pin7 YES NO d Check the DC 12V of U200 pin3 13 Check the function input YES Y NO Check the FB302 gt Normal YES Y Check the Power Circuit LGE Internal Use Only 3 2 Copyright O 2009 LG Electronics Inc All right reserved Only for training and service purposes 5 AUDIO ABNORMAL FUNCTION MODE C PORTABLE YES Check the input NO Check the input NO NO Ae of U503 pin7 8 gt signal CN500 gt Check L800 L802 Check R800 R801 l YES NO Check the output signal of U503 pin19 23 Check C810 C811 C CD USB YES d Check the input signal of U503 pin3 4 NO gt Check the output signal of U703 pinss 57 WEE and refer to CD troubleshooting Check the output signal of U503 pin19 23 a TUNER i YES Check the input NO Check the output signal NO Check the output signal NO Check the output signal signal of U503 pin1 2 o
18. MAIN P C BOARD DIAGRAM TOP VIEW Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes pS N SS Eed NI C200 O O ang O SP CON23 FB301 O CND L GND GND e 12V H2Ve TO SMP Anma C261 C262 O Os En 00 F301 GEIER Ka BATT 12V oS o Lea ooo 2080 ga un J ig ga T o fol d C Din OF gt ay tra 6 Eg fol lay da D SI on of D 88 O oo H N ua D aa aa 0 0 0 0 0 eiae ms gogg N 0000 DID DIO 0 01 10110 0900 aal JUD oo a HH 50 5 a o de 0 J72 J74
19. The pick up incorporates a strong magnet and so should never be brought close to magnetic mate rials 2 The pick up should always be handled correctly and carefully taking care to avoid external pressure and impact If it is subjected to strong pressure or impact the result may be an operational malfunc tion and or damage to the printed circuit board 3 Each and every pick up is already individually adjusted to a high degree of precision and for that reason the adjustment point and installation screws should absolutely never be touched 4 Laser beams may damage 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 A D NEVER look directly at the laser beam and don t allow contact fingers or other exposed skin 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 there fore a cotton swab should be used taking care not to distort this iussi lt l Pressure V Conductive Sheet 6 Never attempt to disassemble the pick up Spring by excess pressure If the lens is extremely dirty apply isopropyl alcohol to the cotton swab Do not use any other liquid cleaners because they will damage the lens Take care not to use too much of this
20. with clothing in order to pre vent static electricity changes in the clothing to escape from the armband 7 The laser beam from the pick up should NEVER be directly facing the eyes or bare skin Armband Resistor 1 MQ Resistor e 1 MQ Conductive Sheet Copyright 2009 LG Electronics Inc All right reserved 1 3 LGE Internal Use Only Only for training and service purposes SAFETY PRECAUTIONS Electrostatically Sensitive Devices ESD Some semiconductor solid state devices can be damaged easily by static electricity Such components commonly are called Electrostatically Sensitive Devices ESD Examples of typical ESD devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be used to help reduce the incidence of component damage caused by static electricity 1 Immediately before handling any semiconductor component or semiconductor equipped assembly drain off any electrostatic charge on your body by touching a known earth ground Alternatively obtain and wear a commercially available discharging wrist strap device which should be removed for potential shock reasons prior to applying power to the unit under test After removing an electrical assembly equipped with ESD devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge buildup or exposure of the assembly Use only a grounde
21. 5 O 1 Be ese EEE EEE gt x S AREA ol dd 2 3 SISSE SENS O 88 8 E 2 SS 2222 d i i d EM Ce o i 5 1 2 Z Sa BEERS ol E SSSSSS SR see ls i DEER e n 3832234444337 1 lt L l 2 V E l d 1 i 1 a 1 a i b m CG 22g E Ske 2 i OT i E PRE f amp A AS G amp EI lt MEE B 5 H SS e 5 ii g 88 ea i 5 33 ajl i xo BS i l O z SE Za i i E 2 oO feo E 85 i d i i S i R i i i i i L i 8 E 5 R 3 d Sne E i d HO Gu 3 1 i i i i i 3 i i 3 88 ee mr g x xl lz zlil 1 Se EZ 149398 BES i 3332 ae aa Wn tr nnn rn m nn nn en nnn enn nnn nn f ZO Suu ET da EE Pe voor T uuyc g REESE ERE E 100 Se Bi e L3 aa a ed d Hu EEINDD 0 X o a I E 8242 R la 3 arer LTR aaa E S S el le HOE We is R ee S Ie ee el e Paes m gt le lo le lo la l lo le le s le lo l lo alas 23 3 gt x SIS S S IF IS IS IS S e ss 181513 2 288 Veels SS 2 EIS X 5n uB5BEBLxxxrf uxrxx xsa 22 Sel ls 5 5 2 a ss 3 sls S ela 80055025505582525728 ag EIS SI sls 2 B3355 6v02555895 5298 S PIE D eie ox BggcgBSBBQg5S S Zoe i 58 5 5 1 8 3 6r a wl 3 TT T ve ZON9O 2 O3nBX HE J 8 Sl als y 75101531 ES B 8 153 312 Sore E B meu 8t eo BE 20010 der Les SS Ba tanay ON9d 5 0901 3809 ON gz p A avaon i GROS 2 m oovay 22 ETE ET 1 oL roe Le QQAv o5 vivaans IL i 5 2 TC oy L2 OINOW aV 2m oasans Ee 24 DASENS 09 UNOM 0W A8n
22. 604 8 i a AI fie 2599 i c650 15P i S i i 1 LGE Internal Use Only Booting OPTION R607 R604 OR ne Wie e 7 MCUS800 BOARD FBBOOR STS ole R673 a 2 slelol lmlalslolalolrjejols BUS TU SCL I x 2 3 3 35 2 2 3 3 S S si LS S SETS JE lle __2 2 2 2 2 SISI SS S S S S S TU SDA FBEOOR 1 sl IS 1 P SENS e ja i BBOS PWR ns 2682 T E R681 FB6OOR 1 e TU RESET FBOOR i 1 0697 d k k k 104 T T L C609 ISBN L DCH 2S8 F ssT25vFo808 ES USS SSU SS abu 104 42516100E 7TL amp SLL 2 3 5696 16833958 L To S x zz o zen waa egane ctr Yon 8g SEBESRS 235 S28 288 2328883 moo
23. 8591 IK E S 91901 SON dN old WO i HSV ns 50 30 Wl SOINOM12313 WI VOO84A6E1SS dSO OAN3S 07 OAM3S YOLOW QJ Avevsena O waczesve k HON HOU 1SOH 8Sfn 08 8sn LGE Internal Use Only 3 15 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 16 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes CIRCUIT DIAGRAMS 1 SMPS POWER CIRCUIT DIAGRAM IMPORTANT SAFETY NOTICE WHEN SERVICING THIS CHASSIS UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITH OUT 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 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
24. E E ll 8 lg 61097 gr 8935 e o x BOT glas BT UP 31051 uy gag eb TA 11001 T 2 E Delen s8 2223 Lo si 13 38 L ie yasaig asnog Koig P aT E LES 8 2 sl 2 e EM n 5 3 ss a D digas oui e Ve At 0 gens Mis AR s U n qe 355035 CD E By 80031 7 sio3s aan e E 2 eann L 2021 Es s s 19s919 J0919 do15 30831 NE 41035 Dante a N DEE datas ss ER 3 T Is 01021 oy H SOSMS d 9007 EEN viva oT 60097 Er y ox ww bn L EN 70007 lan DS m Y SEU els 8 8 8 8 8 8 B 8 B Ee E SE 953 2282828888882 unl ka ER porosa E N le ls la lg lg ls la la le E le le le G IE z e Gs ER e Ho 00031 an 49079 75 9 2 Ze x S x 0GMS ge 03 9084 Sl 2 EN ET ER 832 dd E 13S ej E 2 iD Ho3vas abis 6 COSMS L o gt Kn OLSMS Sy BE Sg NOILINN4 Tes ens e e o ny T 10845 60SMS CH 2 T g0SMS lt k Se 35019 N340 e 2 eo f amp 8 37 8 d 2 S 3 amp um i AgaNvis OF i o T i L ZOSMS ES uo HoH i DEn d te E l SS I i i a T z i zi E 3 i 2 d 1059 5 5 E N 1 3 3 8 i 2 S 3 n zz A e amp i SZ al 31038 Be E i S mowa 5x E 3001 Ei an n l sisa i i i i i i H E i H a 1 S i 1 emt i i l x 2 gt E En 2 ES 5 BEEESP 2 fo 2577 Figg 2 285iseeee88e ES 9099999 S QuVO8 NIVN OL e o eo M o D st e SY SB74 2009 07 10 LGE Internal Use Only 3 26 3 25 Copyright 2009 LG
25. Electronics Inc All right reserved Only for training and service purposes CIRCUIT VOLTAGE CHART n5 GO 4 109 IOn 1 0o Po 3 25 6 01 3 25 6 01 GND NC Co O Or o IO N Or amp CO LGE Internal Use Only 3 27 3 28 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes PRINTED CIRCUIT BOARD DIARGAMS 1 1
26. K OF ELECTRIC SHOCK THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE LGE Internal Use Only 1 4 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes PROGRAM UPGRADE PROCESS Important Notice When ugrade the software running N Oo E Do not shut down the power it may damage the unit Copy the software file into the USB flash As the file name is SB74 VXX mcs Insert the USB flash into the USB host Set Function to the USB position Appear onto the LCD CHECKING UPGRADE SUCCESS After finish Un plug the AC inlet about 2sec Than connect the AC inlet source again Software upgrade completed You can check the software version At Power on mode Press STOP button of the set and PLAY key of the RCU together LCD shows SB74 VXX version Copyright 2009 LG Electronics Inc All right reserved 1 5 Only for training and service purposes LGE Internal Use Only GENERAL Power supply Power consumption Net Weight External dimensions W x H x D CD Laser Frequency response Audio Single to noise ratio Dynamic range Audio TUNER FM Tuning range Intermediate Frequency Oscillator frequency Frequency response Audio PORTABLE IN Out put Power In put sense Frequency response Audio Signal to Noise Ratio SPEAKER
27. KA431 4 N e Due e H f l LN i i F901 e T F1 6AL 250V 3 GND Hn I l E MR E PN901 b CONNECTOR 2 OO H BR BK BL wH i Pha att cem Bee ON re S E e e EE e SMPS i GE NOTES L Symbol denotes AC ground NOTE A Pars at are shaded are critical SB74 rkrSymbol denotes DC chassis ground With respect to risk of fire or 2009 07 10 A B C D E F G H J K L M N o P Q R S T Copyright 2009 LG Electronics Inc All right reserved 3 17 3 18 LGE Internal Use Only Only for training and service purposes 2 MAIN CIRCUIT DIAGRAM
28. MAIN RESET e 2 E o 3 R601 Ep i2V 2 S x ot FBI20R 206 1 2 amp 8 Y IN 4 pen E d b D SCOR 220R a e voL DATA 022 109 C621 100P TEM Sx e E CD BCK ER x a 0656 OOP C680 18P DAC BCK CD DATOUT 2 2 TU SDA J 3 3 cy wn BET Dt HOOF CD LRCK IN je 2 e e d Ww 47 10 7001 2832 HOOP C642 NC i kiat a ZUR SSI 2 C804 100P C628 100P TURDA CLOSE B T AMP MUTE 1 LC0 DAT T SCL C600 100P C635 100P R674 y y FB600R t 9800 RX SRST C637 100P 1 R675 FB600R ROSLIN C636 JOOPNC C6B1 18P CD MUTE KEYiL DAC MCK R688 ANY dk kEYO C633 100PN C682 18P DAC LRCK E ime e es DEE OOP C698 18P EECH 38 R699 OR T a Co C994 DOP C620 nc 1 See Si USB_O p 0895 104 cen 104 1 6 OPEN CLOSE DET Ne C853 104 1 M 12 J DAC BCK kevi R4 FB600 C613 104 R657 KEYO AAN w2 RDS IN ADC SEL ADC_BCK L 2 5 S 1602 i 1 CYTBOSR H RESET H 3 2 T MAIN RESET H 3v3 i Joe i TU SCL e i 10k 1 gs VOL DATA 4062 2 al 28 l ENS 10k 10k R679 de 1 KEYO RDS IN lod R664 10k 10x NC R677 H 1 KEY L J TU SDA 1 R661 tok 10k NC R676 1 D ADC SEL TU SCL MCU9800 G H J K L M N O P Q R S T 23 3 24 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 12 5 LCD USB PH CIRCUIT DIAGRAM LCD USB PH
29. P NO AFN73250927 LG SEPTEMBER 2009 WANVIN 329IAH3S vigs 13GONN Website http biz lgservice com LG Stylish Powerful Portable Boom Box CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL SB74 CONTENTS SECTION 1 GENERAL e SERVICING PRECAUTIONS ee ee ee ee ee hmm s ESD PRECAUTIONS 2 23 eed Dae em erm GING ede AE Ee deis n RR ape Get boegoe nee PROGRAM DOWNLOAD GUIDE SPEGIEIGATIONS ee Sue ge eer a ee SECTION 2 EXPLODED VIEWS e CABINET AND MAIN FRAME SECTION GPA e PACKING ACCESSORY SECTION ee ee ee ee ee ek ee ee ek ee ee ee SECTION 3 ELECTRICAL PART TROUBLESHOOTING GUIDE e WAVEFORMS OF MAJOR CHECK DONT e WIRING DIAGRAM EE EE Ee ek ee ee hr er BLOCK DIAGRAMS xeu eee toe Ri dade a Qs a id e CIRCUIT DIAGRAMS eh rr e CIRCUIT VOLTAGE CHART ee Ee hh hh PRINTED CIRCUIT DIARGAMS ssssseseeee n SECTION 4 REPLACEMENT PARTS LIST Copyright 2009 LG Electronics Inc All right reserved 1 1 LGE Internal Use Only Only for training and service purposes SECTION 1 GENERAL SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK UP 1 Notes for transport and storage 1 The pick up should always be left in its conductive bag until immediately prior to use 2 The pick up should never be subjected to external pressure or impact Storage in conductive bag Drop impact 2 Repair notes 1
30. V 100 10V ns FB303NC dq NC C311A op op op e wc 100 16V DKNC ras SO 100 16 17 Dan R328 5900 8 bi IN4001 AC Socket sw END 23014 Q308 2 2R0 5W T T ET e 0662 a N R306 39K 3 R308 e DC DET 470R CA C309 Ou 104p c308 100 16 3 usa_PWR an R319 N 10K GND GND S CD POWER gt gt e 2 XE6202 3 9V odd D306 10K U301 EE OUT N 1N4148 mcu 3 9v e e e 4 DC 12V C314 C316 104 a a on Ww C315 100 16V zo AA 100 10v NS ER op op op ae DS l MAIN TE com SB74 A B C D E F G H J K L M N Oo P Q R S T LGE Internal Use Only 3 19 3 20 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 3 CD CIRCUIT DIAGRAM CD SB74 2009 07 10
31. W robe 10 U703 pin21 anl Ri RE Invert BUSY H1 5 00Y CH2 500V N 25018 CHI 120V CH4 5 00Y 761 076Hz Copyright 2009 LG Electronics Inc All right reserved 3 11 LGE Internal Use Only Only for training and service purposes 7 WHEN CD PLAYING RF WAVEFORM U703 pinea EH 8 CD READING DAC LRCK BCK MCK DATA WAVEFORM U703 pino ER U703 pin4o Bis Slope Rising Mode U703 pinar Ef anms emen CK MAMA AM Coupling U703 pins Ed PATA mre re CH2 5 00 M 250ns lt 10Hz LGE Internal Use Only 3 12 Copyright O 2009 LG Electronics Inc All right reserved Only for training and service purposes 9 WHEN USB OPERATING D 5V D WAVEFORM CN705 pin4 Ed CN705 pin2 28 x CN705 ping PX Pk Pk cH Min 240m CH2 Off Freq CHI 10 RADIO OPERATING TU DA CLK RST WAVEFORM U101 pin2 En U101 pin8 El U101 pint El Ht 2 004 CH2 500m Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes CH2 Coupling DL BW Limit Off 200MHz 3 13 LGE Internal Use Only WIRING DIAGRAM VV aANADIA 9P 2 A n po S gt O 2 O s au st D 5 CL p E O O a O gt EN F O E o z A LO 3 2
32. al ND te Asng a3 DEE Aris OINON VNY Mf Mg TER Tn nen PETS ELK HNOA OD 1n0 NiQ s X WEG wa 3 29 12 SS E a 52 5 003 _ K K Q 9 3 CS 22 28288 E ei y D Sooa oonosas S f E Fe Xx om x ubl T E eR Em 3 lt 3 S eto fe Jo hs je reer e r E Va Tas 2 AE 20203 52 88 Le ta e 5e ery Je We sel lla Xi e h EE ER lol als To lt Geer RS ein KE Gi GE OFLY 55 EE T ST n Se ee x 3 ES a en e jrejre 58 dis es e ji oe ee e SIS BIS x lt NIS sE Sai e gt m E R 3 Ss gt H SEA Bl T 2 S ka S r E a o a hd lt a sl 8 8 I T EE SS G 5019 RE iid de T Ir D 28 35 sJ die ggs as T El de 999 ss so 2 els E b Ekek 7 kek U a s EEEPEEEEEEEEPEREFEERE B Se S x5 sa ay of OO RER E SE 1 1 23 SST EG Te o 1 1 gt O eO a o o gt a en a o e C AE N o EG 4 N 9 o eo M lo lt e QN LGE Internal Use Only 3 22 3 21 WAVEFORM Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 4 MCU9800 CIRCUIT DIAGRAM R
33. alcohol on the swab and do not allow the alcohol to get inside the pick up 1 2 Copyright 2009 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1 Preparations 1 Compact disc players incorporate a great many ICs as well as the pick up laser diode These compo nents are sensitive to and easily affected by static electricity If such static electricity is high voltage components can be damaged and for that reason components should be handled with care 2 The pick up is composed of many optical components and other high precision components Care must be taken therefore to avoid repair or storage where the temperature of humidity is high where strong magnetism is present or where there is excessive dust 2 Notes for repair 1 Before replacing 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 leakage the metal part of the soldering iron should be grounded 5 Workers should be grounded by an armband 1 MQ 6 Care should be taken not to permit the laser pick up to come in contact
34. d tip soldering iron to solder or unsolder ESD devices Use only an anti static solder removal device Some solder removal devices not classified as anti static can generate electrical charges sufficient to damage ESD devices Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ESD devices 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 Immediately before removing the protective material from the leads of a replacement ESD device touch the protective material to the chassis or circuit assembly into which the device will by installed CAUTION BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT AND OBSERVE ALL OTHER SAFETY PRECAUTIONS 8 Minimize bodily motions when handing unpackaged replacement ESD devices Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device CAUTION GRAPHIC SYMBOLS THE LIGHTNING FLASH WITH APROWHEAD SYMBOL WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED DANGEROUS VOLTAGE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RIS
35. e or electrical shock Copyright 2009 LG Electronics Inc All right reserved 3 33 3 34 LGE Internal Use Only Only for training and service purposes 3 1 MCU9800 P C BOARD DIAGRAM TOP VIEW LGE Internal Use Only 3 35 3 36 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 3 2 MCU9800 P C BOARD DIAGRAM BOTTOM VIEW Copyright 2009 LG Electronics Inc All right reserved 3 37 3 38 LGE Internal Use Only Only for training and service purposes 4 FRONT P C BOARD DIAGRAM Ses Eerie SESS 5 s ld a a a C 220 SS JO Si O O 2000 C S ERA J401 EIE Em E E E Ee em OF O un On SU O 20 JR404 did e 7 S 2855 S874 ELMO 213283 U 180 2007 410673 2009 86 12 e di JK800 O USB PCB PP ri OO OO Re OO
36. f U101 pin5 6 of C102 C103 of R100 R101 l YES Check the output signal of U503 pin19 23 Copyright 2009 LG Electronics Inc All right reserved 3 3 LGE Internal Use Only Only for training and service purposes 6 U302 3 3V ABNORMAL U302 3 3V output normal NO Check Q308 output normal YES OK YES Y Check D301 NO YES Y Check R328 NO YES Y Check Q302 output 12V NO YES Y A Check ZD302 normal YES Check R308 YES OK Y Replace D301 Y Replace R328 Check ECO POWERN NO is HIHGT YES OK N Check F301 A Replace F301 YES OK NO Refer to SMPS troubleshooting 12V 7 1C603 ABNORMAL d Check both end voltage of IC605 1 2V 3 3V Y d Check IC603 pin13 47 94 120 122 124 1 2V Y Check 1C603 pin111 112 X600 operation y When power supply to IC603 pin107 Low gt High y OK LGE Internal Use Only NO gt Check both end voltage of IC302 3 3V 6 2V YES NO gt Check or replace R601 YES NO gt Check or replace X600 YES NO e Check IC602 Reset circuit YES 3 4 Copyright 2009 LG Electronics Inc All right reserved 2 NO Replace ZD302 Replace R308
37. tion E YES Y OK 12 U501 ABNORMAL LCD display check YES Check the power NO x Refer to power supply supply to U501 pin7 U302 3 3V YES YES Y Check U501 pini CS NO Check MICOM U603 pin71 NO pin3 WR pin4 data CS pin72 DAT pin73 WR Replace MICOM YES Y OK 13 U101 FM TUNER MODULE Check Q305 B High Check JK600 pin24 26 NO d Check the power supply of U101 pin3 YES NO Check TU SCL TU SDA gt YES Y Check the operation YES Y OK LGE Internal Use Only 3 6 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 14 CD PART Turn on CD YES Y Check Open Close YES Y Check READING display Ls YES Y Check Reading OK ES YES Y Playing check audio output YES Y OK NO NO 15 CD READING CHECK Check Connector locking CN703 CN723 l YES Does sled motor move YES Does the laser move YES Does laser light YES Does the spindle motor rotate l YES Is reading ok Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes d NO NO NO NO Y Check R730 R731 Check CN703 Check CN703
38. ws Neso Ze amt E Soug Sas 25853 lt 2222 S gt S M23 wot Mi4 wee sek cK ke 6 Ab03 63 n 5 Mos puso D vss33 6 3 gt M02 DIS No Most 67 voo33 0 LED WR R603 ANN FB600R 5 apo2 8 M22 M03 M12 R622 FBEOOR L M21 does S ROIS EBGOOR Moor Es M20 wos um 1 ADOO Q7 uh R656 NV cascos do M5 MOS Mio ic0 cs 71 Dis Q8 ve LCD DAT T Ee pu 2 Ww m wos 9800 RX D 3 pu 4 os asper R620 oR e nos ES we Lu M08 RI M13 vaL DN 623 FBEOOR D ois G3 R641 FB600R M05 M35 MEA R647 FB600R nos M2 Ma2 M36 CD BUSY RETE po 2 10603 Bu E M04 Ma1 M40 CO DIN OUT rm aren 8 bas wn Mas M38 ADC_DATA E MLC9800 LQFP on 8 nU ADC_LRCK ANA 88008 6 poz 7 R635 220R M33 M29 AMP_MUTE 81 cP47 8 ge R619 FEGOOR snag 5 M30 vs ES R643 330R FB600R gt M20 M27 DAC DATA 63 vssi2 4 m zs R630 64 Wh We M03 M22 TEN siu FB600R S Dos E s MIDA M23 M24 DAC MCK D 010 eg R642 FBS00R seet 220R MO DAC BCK 67 Do2 0 R684 FBB00R RESI 470R og DAC LRCK 68 009 9 eer Raae AAA F8600R e SSC m R629 FB600R gt M08 CD NCK D vos 7 R621 100R gt HRG Moo LED POWER R662 100R MAIN POWER Q2 GPo1 5 63 mon 4 L e o o 6 avss33 3 3 3 3l 3 L 2 naaggag Q m aT ET eT ones 8828288 oak SI B 8 3 uc 8 8 eo eeeaSS SR SS ZBSs A Aw ze 256 amp SES555szsccac 22 2 Beoeeeceooeooo EE oq a this capacitor nearby ae 3 4 e t kd SDRAM ver ry 4 L504 e e e e TT 1 3v3 kd ue 2 2UH E D a na sd zo 8 E 25 Be
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