Page 1: ...CD TAPE1 2 VIDEO 1 5 VDP ÏV 150mV50kcl DIGITAL OPTICAL 1 2 COAXIAL 0 5 Vp p 21o o75A S N PHONO Front84 dB rear84 dB A TUNER CD TAPE 1 2 VIDEO 1 5 VDP TV Front 95dB rear 95dB A DIGITAL OPTICAL 1 2 COAXIAL Front 110dB rear 99 dB A Remaining noise Below 10sV A Outputvoltageand output imoedance VIDEO 1 3AUDIO OUT TAPE 1 2REC OUÏ 150mV I kO FRONT 1 2 REAR CENTER SUBWOOFER 1 5V DTGTTAL OPTtCAL 2 Headpho...
Page 2: ... Type HighDensityLinearConverter Sampling frequency 48 kHz DiAconverter Front 1 8 bitlinearI Jsx 2 Rear 16 bitlinear4 Jsx 1 Sampling trequency 32 kHz 44 1 kHz 48 k z General Powerreouirements US Canadian l20V AC60Hz AEP 22OY AC or 240VACadjustable by authorized Sonypersonnel 50 60H2 UK 240VAC or 22OY ACadiustable by authorized Sonypersonnel 50 60H2 E 120V 22OV and240VACadiustable 5O 6OHz Powercons...
Page 3: ... The Simpson 250 and Sanwa SH 63Trd are examplesof a passiveVOM that is suitable Nearly all battery operated digital multimeters that have a 2 V AC range are suitable See Fig A TA ElOOOESD MODEL IDENTIFICATION specification Label UKModel AC 240V 50 60H2 E Model AC r2Ol220 240V 50l60H2 SAFETY RELATEDCOMPONENT WARNINGI I CoMPONENTS IDENTIFIEDBY MARK I On OOrreo L NE W TH MARK a ON THE SCHEMATIC DIAG...
Page 4: ...nalogSection g 3 3 Schematic Diagram Analog Section 11 3 4 SchematicDiagram Digital Section 15 3 5 Printed WiringBoard Digital Section 19 3 6 Schematic Diagram Video Display Section 23 3 7 PrintedWiring Board Video Display Section 22 3 8 SemiconductorLeadLayouts 3Z Title Page 4 EXPLODED VIEWS 4 1 Chassis andMainBoard Assembly 33 4 2 FrontPanel Assembly 3b 5 ELECTRTCAL PARTS L ST 36 ...
Page 5: ...Ëft ËËË FË trEll E E 1 t rt sE E Ei Ë F çE F F ËF Ë r s â Ë Ë Ë sà AËË Ë Ë Ë E s Ë ËË ËËË i À â ËË gggggc ÊËË iËËË Ig gg Fg ËËË EtrEBE Et r E F eEË Ë Ë I gËË ËsgâË Ë Ëg Ësr ËËc gËË ggg g i g trEEtr SE E E E Ë ËËËËg Ë c sssËËgËËg Ë ËËËg ÉË Ë gËË gââgËË ËË ËËË ËËË gËË 5 d J Ë É HE n o É F o q lù o an z 9 F J z D lù j a ...
Page 6: ...ËEË eÉa ËËec ËEeâ i Ë Ê igË ËË EiËË Ë Ë È s i ËË Ë Ê Ë ËËÉ5ââ gâE tr E s E E l9 13 l5l eEË e E a g Ës J Ë ÊË Ê u Ëe E ç ËEeË Ë ËË EËËi a lË g ËË Ër ç ie uË Ël ï 1 Ë ËEËËË EËgË g E Ë ÊË gqË iË î Ël âi Ë EEEË Ë Ëâ ur iË e li ÉE â Ës E e E Ë Ë Ë a O Ë Eè âB t 8 à É rÈ i Ës E Ei g à 9 È EEËË eè5E ffi t 6 ...
Page 7: ...itch 51005 OFF DIGITAL switch 51012 COAXIAL MASTER VOLUME knob RV801 MAX Connection LINEOUTFRONT Procedure 1 Playback the secondselection f IkHz fs 44 lkHz OdB of test discYEDS l8 2 Adjust RV601 L CH RV651 R CH on the DIGITAL board for minimum reading on the distortion meter AdjustmentLimits About 0 003 Adjustment Location DIGITAL BOARD COMPONENT SIDE RV60r RV65r l Hp l t HD l sEciloN 3 DIAGRAMS f...
Page 8: ...O Oi6ITAL SOARD N0 805 paee2O ÏO DIô IÂL BOARO cN 804 TO OIGIIAL EOARD c N 8 0 6 Seepage I rO D GITAL EOARD cN 807 Seepage 19 Jt03 FEi t EMME HM TOPIN TODIGIIAL TOOIG TAL IOOIGITAL EOARD EOARD EOARD EOARD N0 20r cN802 cNg3 cN8t2 Seepage Seepage Seepage Seepage 27 20 2o 19 Jl04 rûllh rUl9 91h trtr 8 ...
Page 9: ...tnFFlx T Floliltprsl Ttlnllfçn fsrewa 1llliiillôii llô iâlllii l l r pllôÙiil lôij illr rllrllillJ ll lL t lL rt_ s lt r iii i Ë 1 rj lî IO OISPLAY IO DIGITAL BOARO EOARD NO 8ll CN809 TA ElOOOESD mu wELI I aN4 ql TODiGIIAL BOARO cN705 See page SeePage 28 2g_ Seepage 20 àpage See page See Page S ee 1ô 3i 2o 21o t ...
Page 10: ...TA ElOOOESD IB VOLBOARDI I lote on Printcd Wiring Board O o parts extracted from the cOmOOnentside TODIGITAL EOARO cNSt 7 Seepage 20 IRYBOARDI IM VOL BOARDI 10 ...
Page 11: ... l4 t 14 F t4 F t4 t 1 3 J l0 E I6 c 2 c 5 D 5 c I0 D r 0 E 8 E 7 J 3 J 4 J 5 J 8 H 6 G 3 J 6 H 3 H 4 B 23 D l4 E l3 Q806 Q807 Q808 Qeo1 Qs02 Q903 Q905 Q906 Q9o7 Q908 Q909 Q9l0 B t2 B 13 B l4 G 9 G 9 J l3 J l3 G r2 F L2 H 2 H 13 c r2 FDffil l a u D o l L o u T l lvtrtt I À U D i 0 l l o u l l tumil  u D r 0 1__9 r tw l IREC 0urI fra rl I RECouTI tt DEotl J r 0 6 3 a w r 0 j l O u r l or l to l Jr...
Page 12: ...rrl r 1i I J u o ls È t I n Ë rr a l r f t o r r r f r I i T 5 LT i T l 1 l r ù l r l r l 1 J lîcrol 1 C 2 0 xct1052BcP I 9 o r o o N o C l 0 3 L C 7 8 2 l d r c 1 0 11 c 7 8 2 See page 18 ro vrDEo BoaRD N 0 8 0 8 t on o oo SeePage25 Seepage23 to o Grfr soenr g t 0 8 2 4 ...
Page 13: ... B A I À 4 B A I À i l L 0 G I C hcrosl BUFF R c209 Il e J a 0 N 4 1 Iu ulfrloARDl T mT c N 8 1 t N o 8 t a I I I t l B i i K È o 1 È l l l g r s ts TtrF iT l i L r tit ï c2os 3 J2174 F r o È 6 T OD G l T A LB O A M cN701 See page 18 See page 18 SeePage26 I O D G I I A L B O A R D T O I I S P L A Y B O Â R D c N 7 0 3 N 0 8 2 8 ù ù lB voLlI TBOARDI I 09Q7 I o l ï n s r s i t p ô 1 I I lc 1 9 0 r A...
Page 14: ...l I 270 03 58P ltl 0 J80r i i 9 0804 25C3622 0 1 t l 0805 25C3622 lTRilr il l L l I FR0Nr 2 INEjlrl Fm rl i R I F R O N T 2 I I R l lRtffi l L l l I I Mu l I I i REAR I l R l lC BlockDiagram fc205 LA2770 Note on Schematic Diagram All capacitofsare in pF unlessotherwisenoted pF ppF ...
Page 15: ...Ro I c301 302 O P I F 3 I R f I I I L I il l 73 72 Seepage 12 T0 AN 100 _ BOARD Cfl805 See page 25 l o v r n t o n n o o BOARD i l o 8 rI See page 26 IO DISPLAY BOARD r0 8t 9 Seepage 14 TO M VOL BOARD N0 8r 7 Seepage 12 E R F F S r F S 2 S TO P S POWE S I R C S cN809 E D c B i F E f r i e 2 8 A 3 8 2 9 9 0 t t t t a I i o o ô â Ë Ë Ë 6 S R TO ÀNALOO BOÀRD N 0 8 0 9 See page 26 ro DrsplAy 7 Â 2 Na ...
Page 16: ...T I N P H A SI S J I b 4 8 lTcaogl I T E M P H A S I S E M P H 32 29 33 28 31 27 26 35 25 37 R E À R REV RBRATI ON S E R A L I A T A C O N V E R T E R I r 0 1 9 9 2 l I I I I 33 c520 33 c 5 r 9 0 0r 11 sl 1A TEST O F S T q t S t c S l 2 cxDI 3550 o2 m 03 1a 16 ...
Page 17: ...i 1 zz rcôo 8C1558P i 0o5A 2 5 C 3 ô 2 l A fl IEJ iff 813 31 8ii 8 l ll I c636 5600 R603 I 6 8 i J _ t l o t 1ç l 6 rt I lrc6oT 1 f 1 i_ n L lllc6dz J À ozÈ I I Pc ÀMe R6oô Lô0 6iI Lc6oe l Pr 701e èrs_LTr200e L ...
Page 18: ...8 2 0 Seepage 13 T O A N A L O G BOARD N 0 8 0 1 Seepage 13 IO ANALOG BOARD N 0 8 0 4 Seepage 13 l eorao t i iÀ J RRO R 1 T I l i N 0 6 2 5 Seepage 13 tot see page 12 IO ANALOG BOARD N 0 8 0 6 TO ANÂLOG BOARD N 0 8 0 1 BOARD N 0 8 1 2 Seepage 26 t r II I 1 I tl r I L Ri al 8 1 227 8k ci B L aur raora art I R C H P R O L O GC O U I 1 O D I S P L A Y I I p n r p n ...
Page 19: ... ru l Prm7 fo r Ll I N I e t o u r N I IDIGITAL BOARDI TO Seepage 8 80ÂR0 N0 m7 Seepage 8 TO ÀNALffi EOARO Nt703 See page 8 r0 M voL BOAFO N0 825 Seepage 10 Seepage 8 LOG 1O SAL6 M ÂNALO6 I i d33 f 3f3 see Seepage 9 Page8 Seepage 9 ffiffi i x e 5 k 19 ...
Page 20: ...RD N0 79 Seepage 8 Seepage 29 TO DISPLAY SOARO N0 8r5 TO ANAMG BOARO cr805 TO YIDEO SOARD N0 818 Seepage 28 i3 ff tt page 3r ii û t pase 29 i3f See page 10 tonH t s page29 il0 820 NO 8r3 Seepage 29 tO ANAL MARD TO TOÀNA 80ÀR0 N0 809 See page 9 20 N0 4 Seepage 8 N0 824 Seepage 9 ...
Page 21: ... 8 l 8 BOARD c N 8 16 C L D CE v2 v3 E l r 1 0 r 0 0 l 2 G 1 3 0 0 80 ittTSùAL lii i i È T T È L I 28 il3 2 9 1 1 1 o l l C 1 0 0 3 r s 3 t 6 a F L U o R E S C X T r m r c r r o nt w t l r r D R T V E R l r d 3 4 I l 9 â rcl003 rccll620s 36 121 3 7 1 2 2 38 39 43 t7 t t u c r l l C l 0 0 4 l s z 1 0 0 s l rôr FLUoRESCENT rtDtcaroRtuBE DRi VER I 03 lctool 7A I 01 tsctr620s 7 105 72 90 123 124 r 2 5...
Page 22: ... Seepage 18 D l 0 0 r D r 0 0 3 D 1 0 0 0 r 0 t 3 s l 2 8 0 À D r0 0 4 D r 0 0 6 s E L 2 4 r 0 E 0 r0 0 1 o r 0 r3 B A l a u s E À rP o s n r 0 N s E A rP o s l Ïl 0 N FEAR FROI LEFT RIOH FrmÆl tffil N0 828 2 TÆaH l F4Khl TUI SW UAIB E O c R L R I O D I O I T A L BOARD cil820 T OD I O I T A L BOAM c N 8 2r WALL à Seepage 18 48K 32K SUR DYT PEO I W P I I rv I I T A P Er I a P E2 l I l sr031 sil l s...
Page 23: ...l tc672 rc673 rcl00l rcr002 tcl006 rc1050 Q30r Q302 Q303 D 3 D 4 c I0 c I0 B 12 B r2 J L2 J t2 J 1 3 t 8 J 8 J r7 4 4 4 4 4 3 c 2 B 4 c 4 D 6 c 9 8 2 c 6 D 9 D l0 D 8 F 2 c 7 8 6 8 8 E 6 E 3 E 4 F 4 G 5 t 5 F 6 G 2 F 8 H 2 G 4 t 4 J 6 1 2 t 3 t 8 G l2 r l0 F 1 4 J 7 D 3 H 7 H 8 Q401 Q402 Q403 Q601 Q608 Q62l Q65l Q658 Q67l Q672 Q673 Q674 Q675 Q676 Q677 Q678 Q679 Q l 0 2 1 Qr022 Q1023 Q1025 Q1029 Q1...
Page 24: ...l J V D E O I N I tvtro tl I v r p E o r Nl vmtrl v r o r or r I Y r p E o r i l l t oP_l I v r p E 0t N I I t t l o I V I D Ê 0r N I v BOARD I I DEO v l _ V2 v a _ WP T v Rt06 75 75 Seepage 12 IO AIALOO BOARD N 0 2 0 1 fflDEorl J7o3 2 IvrpEo 0uT I ...
Page 25: ...TA ElOOOESD Refer to page 14 for note 6 7 t t l l I s v r D E o I I r N I INPUT S VIDEO SELECTOR o o l o e prcgetr r ri fl f oARDi r0 fl r 1o m a â s Ë p p Ë r g C t B g 3 Ë Ë È e i e g at il e r itt q ...
Page 26: ...EO DISPLAY SECTION_ 1 IVIDEO BOARD mNrroRl IS VDEOI o u T l J 7 tI I r v v D pI l v o r o q l l v D E o l l v D Ç 0 1 l D F oI l v o r o l l r N I I l r l I l o u l TO ANALOG BOARD N 0 2 0 1 FDF I tl t_ j Iiii H re IPINBOARD 27 ...
Page 27: ...I l e l l n l l F firoNilôFl t l llnEôl I DEol l o u T l l o u T l l l l 2 l vloEn t l lvoEôl FDEô I o u T l I r N I vnEot l _ l ItDEo l lvrDE 0 u 1 l I r N I W iiibi Ëh di if i F TO ANALOG BOARD N0 808 tYCBOARD 28 ...
Page 28: ...IDISPLAY BOARDI Æ J u ffi O dF R1007 ro6Êf Plor3 ti sror6 W i 15 IwVïrql TODIGIlAL EOARD c N 8 r 5 TO DIGITAL BOARD cN820 1 19 29 ...
Page 29: ......
Page 30: ...03 rcl004 tc1005 Q701 Q702 Q703 Q704 Q705 Q706 Q707 Q708 Q709 Q7r0 Q7l1 Q7r2 Q71 3 Q7l5 Ql001 Q1002 Q1003 Ql004 Ql005 Ql006 Q1007 Q1008 Ql00s Q l 0 r 0 Q I 0 1 1 Q l 0 l2 Q I 0 1 3 B 19 8 20 B 2r c 24 c 25 c 26 c I8 D l8 D l8 D 18 D I6 D I6 D I5 E 9 E 7 D l0 E 5 E 3 c 3 D 5 D 24 D 2t D 26 c l1 c l1 c 9 c 8 c 7 c 9 c 9 c 7 c 4 c 4 c 2 c 3 D 6 D I0 B l8 B 19 B 20 8 24 c 25 8 25 c r7 c r7 c l7 c r7 ...
Page 31: ... arenol slocked since they are seldom reguired for routine service Some delay should be antici pated when orderingtheseitems 4 L CHASSISAND MAIN BOARD 5 2SA1175 HEF 2SC2785 HFE BAlL4M 2SCr841PA 25C3622L 2SC35234 L 2SK246GR 10E2 uzP E 28 lss120 lss168 uzL 24Ma sEL21 10R sEL2410E C sEL28roA c n ft to aJ f snot il lil a UOsG F901 902 u Ë 20 m ltr Ë Ï 2SB731 2SD809K lattt séc lïE ffi ililil ï 250774 3...
Page 32: ...042 01 13 x 3304 944 t L4 4 908 036 11 15 7 685 646 79 16 7 682 547 09 17 7 685 883 01 l8 3 706 165 00 19 3 703 044 26 20 1 560 242 61 2L 7 685 134 19 901 A 4333 832 A A 4334 039 A 902 A 4333 833 A A 4334 037 A 903 A 4333 834 A A 4334 038 A 904 l 632 454 u 90s  1 s51 238 00 a r 555 386 00  1 559 272 1 I A r ssg lzg rr 915 l 533 189 ll 916 1 632 445 u F901ô 1 532 284 00  1 532 740 11 F902A l 532...
Page 33: ...CND E UK AEP MOUNTED PCB VIDEO M O U N T E D P C B V I D E O NTEDPCB ANALOG UK AEP WG MOUNTED PCB ANALOG PCB DIGITAL MOUNTED PCB DIGITAL BOARD RY EP WG CoRD POWER AEP WG FUSE TIMELAG0 634 US CND FUSE GLASS TUBE 125V 1A EP WG FUSE TIME LAG 5 A FUSE TIME LAG 0 634 FUSE TIME LAG 0 634 CND TRANSFORMER POWER WG TRANSFORMER POWER TRANSFORMER POWER l l Rel 5 l 52 53 54 55 56 57 56 4q 60 6C ot b1 TRANSFOR...
Page 34: ...K AEP WG LID ASSY scREW BV 2 6X8 TAPPTNG PLATE F GROUND FILTER W WINDOW TRANSPARENT E UK AEP WG FILTER R US CND FILTER R KNOB M KNOB 47 ASSY Remark Ref No Part No Description Remark q3 4 933 402 01 KNoB 14_t 6 7 685 646 79 SCREW BVTP 3X8TypE2 N_S 65 4 933 419 01 HOLDER FD 66 7 685 646 79 SCREW 906 1 632 446 lt PCBOARD HP 907 l 632 447 tL pCAOnnO SW 908 1 632 448 lt pCBOARD yC 909 1 632 449 u pCBOA...
Page 35: ...ii3 i iso tos oo Hl vl o lMF sEciloN 5 ELECTRICAL PARTS LIST CAPACITORS MF pF PF 1t 1rF RESISTORS a All resistors are in ohms r F nonflammable corLs r M M H m H U H p H CND Canadian WG West GermanY Ref No czl4 c2l5 c216 c217 c2l8 PartNo 1 130 469 00 r 136 171 00 l 136 171 00 1 123 369 00 1 123 369 00 Description MYLAR FILM FILM ELECT ELECT Remark c224 c225 c226 c227 c228 c229 c232 c233 c234 c235 c...
Page 36: ...MF 0 0039MF 22OPF I MF IMF 47MF 47MF 0 0015MF zzOPF 0 0039MF 22MF 0 01MF IOMF 560PF IOMF O IMF IOMF I MF I MF I MF IOOMF IOMF I OMF 0 0039MF 0 00l2MF 0 olMF 0 00lMF IMF I MF 0 0lMF 0 00l5MF 0 0039MF 22OPF 0 0015MF 22OPF 0 0039MF 22Mt 0 0lMF c669 l 126 059 ll ELECT c670 l 136 153 00 FtLM c67r t 130 473 00 MYLAR c672 l 130 478 00MYLAR c673 r ll0 339 ll MYLAR c678 l 130 473 00 MYLAR c679 l ll0 339 ll...
Page 37: ...PIN CONNECTOR 5P PIN CONNECTOR 2P PIN CONNECTOR 2P Rel No PartNo cN8ll 1 564 508 21 cN8l2 1 564 337 00 cN8l3 l 564 338 61 CN8l4 1 564 336 61 CN815 1 564 341 51 cN8l6 l 564 338 81 cN817 t 564 336 71 cN818 1 564 340 00 cN818 1 564 340 00 cN819 l 564 339 61 Description PIN CONNECTOR 5P PIN CONNECTOR 3P PIN CONNECÏOR 4P PIN CONNECTOR 2P PIN CONNECTOR 7P PIN CONNECTOR 4P PIN CONNECTOR 2P PIN CONNECTOR ...
Page 38: ...59 146 52 rc1002 8 759 148 04 rc1003 8 759 990 38 rc1004 8 759 990 38 8 759 990 38 8 759 202 97 8 749 920 59 1 565 320 1 I l 565 320 l I r 565 320 1 r r f b5 zJé t t 1 565 258 1 I r 565 258 l l t 565 258 1 I r 565 258 1 l 1 565 750 1 I 1 565 351 r 1 r f bf Jll r r rc1005 rc1006 tc1050 J101 J101 J102 Jr03 J104 J105 J106 Jl07 J301 J701 J702 Ref No Part No J703 1 565 351 ll J704 1 565 319 ll J705 l s...
Page 39: ...00 80 Q1002 8 729 900 80 Q1003 8 729 900 80 Qlou 8 729 900 80 Q1005 8 729 900 80 Q1006 8 729 900 80 Q1007 8 729 900 80 Ql00E 8 729 900 80 Q1009 8 729 900 80 Ref NoPartNo Q1010 8 729 900 80 Ql0ll 8 729 900 80 Ql0l2 8 729 900 80 Ql0l3 8 729 900 80 Q1021 8 729 119 78 Q1022 8 729 107 84 Q1023 8 729 900 80 Q1025 8 729 rL9 78 Q1029 8 729 900 80 Ql03l 8 729 900 80 Q1032 8 729 900 80 Rr0l 1 259 416 ll Rl0...
Page 40: ...0K IK 220K IK 220K IK 220K l00K 5 5o o 5o o 5 5 5 5o o 5o o 5o o 5 5 o 5o o 5o o 5o o s TA ElOOOESD Ref No Part No Dèscription R223 r 259 492 1r CARBON R224 1 259 452 ll CARBoN R225 l 259 458 ll CARBoN R22t l 259 458 11 CARBoN R228 l 259 500 ll CARBoN R230 l 259 456 1r CARBoN R23l l 259 436 ll CARBoN R240 l 259 466 ll CARBoN R24l r 259 444 lr CARBoN R242 l 259 466 11 CARBoN R243 l 259 444 ll CARBo...
Page 41: ...ON R809 l 259 460 11 CARB0N R810 1 259 456 11CARBON R8ll 1 259 4i4 ll CARBON R812 l 259 414 11 CARB0N R813 l 259 436 11 CARB0N R814 l 259 436 11 CARBON R8l5 l 259 480 ll CARBoN l 2K 5 6K 220 220 220 22K 2 2K 22K l 2K 2 7K 820K 3 9K 6 8K 2 2K E20 2 2K l80K 47K 3 3K 3 3K 3 3K 47K l00K 47K 820K l00K 27K 5 6K l00K 3 3K s 5o o 5o o 5 o 5 5 5 5o o 5 5 o 5o o 5o o 5 5 5o o 5 5 5o o 5o o 50Â 5 50Â 5o o 5o...
Page 42: ... n CARBON l00K Rr030 1 249 441 ll CARBoN l00K Rræl v249 441 rl CARBoN 100K R1032 l 249 441 llCARBoN l00K R1033 1 249 441 ll cARBoN l00K R1034 l 249 439 ll 0ARBON 68K Rr035 l 249 429 rt UK AEP WG CARBoN 10K R1036 r 249 412 LL UK AEP WG CARBON 390 5o o l 4W RVr0r l 238 248 ll RES VAR CARBON 20K 20K INPUÏ LEVEL RVl02 r 237 886 llRES VAR CARBoN l00K 100K INPUT BALANCE RVl03 l 238 248 ll RES VAR CARBoN...
Page 43: ...RAToR CRYSTAT 25MHz VIERATOR CERAMIC VIBRATOR CERAMTC 4 lgMHz Ref No Part No Oescription ACCESSORIES PACKING MATERIALS REM0TE CoMMADER RM P1000 E 4C PLUG ADAPTOR E UK AEP wc CoRD CoNNECT oN us cN0 coRD coNNECTtoN SHEET PROTECTION US INSTRUCTION 8 AEP wc SCREw CASE M3XS us cND uK SCREW CASE M3x6 E UK AEP MANUAL INSTRUCTION us cND MANUAL NSTRUCTtoN cND MANUAL INSTRUCT oN AEP WG MANUAL NSTRUCT oN LAB...