Bose-4401SQM1-dec-si维修电路原理图.pdf

8/26/75 SQM-1 FULL-LOGIC DECODER INFORMATION GENERAL : The BOSE SQM-1 i s a plug-in, p r i n t e d - c i r c u i t board that allows proper decoding o f SQ source material and simulation of four-channel sound from stereo sources. The plug-in module becomes activated when the mode switch on the 4401 preamplifier i s placed i n either the SQ MATRIX or SQ LOGIC positions. When the SQ MATRIX mode i s selected, SQ encoded source material i s piopog-ly decoded t o produce a four-channel output. This p o s i t i o n ma:y also be used for other phase-matrix program material (such as QS) f o r pleasing four-channel e f f e c t s . I n addition, the SQ MATRIX p o s i t i o n may be used f o r enhancement o f stereo program material, When the 4401 mode switch i s i n the SQ LOGIC p o s i t i o n , special f u l l wave-matching logie control c i r c u i t r y i s activated to improve separation between a l i channels for optimum performance with SQ encoded program material. SPECIFIC: I n t e r n a l l y i n s t a l l e d module connecting t o JlOl of the 4401 preamplifier. High-quality, glass epoxy, p r i n t e d - c i r c u i t board construction. F u l l wave-matching logie design incorporating three integrated c i r c u i t s with a d d i t i o n a l t r a n s i s t o r power supply regulation. Frequency responso 50-15 kHz +. 1 dB. Harmonic d i s t o r t i o n (THD) 0.4% a t 2 kHz. RadioFans.CN 收音机爱 好者资料库PARTS LIST SYMBOL DESCRIPTION PART NUMBER SQM-1 DECODER Resisstors R32 1/4 W, Comp, 10 K, 5% R15,16,17 1/4 W, Comp, 180 K, 5% R31 1/4 W, Comp, 20 K, 5% R28,29,30 1/4 W, Comp, 5.1 K, 5% RI 4 1/2 W , Comp, 20 K, 5% RI,2,11,12 1/2 W, Comp, 3.6 K, 5% R3,4,9,10 1/2 W, Comp, 4.3 K, 5% R13 1/2 W, Comp, 110 Ohm, 5% R23 1/2 W, Comp, 2.2 K, 5% R22 1/4 W, Film, 12.4 K, 1% R21 1/4 W , Film, 6.34 K, 19% R18 10 K Separation Pot102938-103 102938-184 102938-203 102938-512 102942-203 102942-362 102942-432 102942-111 102942-222 05W-1242 ieW-6 341 104255 Capacitors C42,43,44 C6,20,22,25, 40,41 C23,24,26,27 C13,14,17,18 C3,9 CI,4,8,11 C15,16,19 C2,10 C3C,31 C33,34 C37,38 C28,29,39 C5,7 C21,45 C35,36 C32 0.001 y f Disc Ceramic 0.01 y f Disc Ceramic E l e c t r o l y t i c , Non-polar, 5 y f , 15 V 0.0039 yf Disc Ceramic 0.0066 y f , 5%, 50 V, Mylar 0.039 y f , 5%, 50 V, Mylar 0.056 yf, 10%, 50 V, Mylar 0.22 y f , 5%, 50 V, Mylar E l e c t r o l y t i c , PC, 4.7 y f , 35 V Tantalum, 1 y f , 10%, 25 V Tantalom, 1.5 y f , 10%, 25 V Tantalum, 4.7 y f , 10%, 25 V 0.0033 y f Disc Ceramic E l e c t r o l y t i c , PC, 25 uf, 25 V E l e c t r o l y t i c , PC, 47 y f , 25 V E l e c t r o l y t i c , PC, 100 y f , 25V 103729 103730 103737 104243 104244 104245 104246 104247 104248 104250 104251 104252 104559 104560 104561 103829 Semiconductors CRI Ul i;3 U2 Ql Diode IN4148 Integrated C i r c u i t , MC1312P Integrated C i r c u i t , MC1314P Integrated C i r c u i t , MC1315P Transistor, PNP, 2K3644 102410 104257 104258 104259 103851 RadioFans.CN 收音机爱 好者资料库PARTS LIST SQM-1 DECODER PAGE 2 SYMBOL DESCRIPTION PART NUMBER Miscellaneous JlOl Ul Ul U2,3 U2,3 15-Circuit PC Connector, End Insert IC Terminal S t r i p Nylon Nest IC Terminal S t r i p Nylon Nest SQ I n s t r u c t i o n Sheet S44.L. .MtiXa Screw 6-20 X 5/16 103836 103922 103923 104253 104254 104219 103122-05 SQM-1 SCHEMATIC NOTES Unless otherwise specified: a. Resistors are 1/2 watt, 10%, b. Capacitors are i n y f . Typical ac and de voltages are shown on the schematic at s i g n i f i c a n t points of the c i r c u i t . Variations of 10% can be considered normal. Signal Tracing Ac measurement of the SQM-1 c i r c u i t i s made with a 1 0 0 - m i l l i v o l t sine wave a t 1,000 kHz inserted i n t o the l e f t and r i g h t a u x i l i a r y inputs. Set Controls of the 4401 preamplifier as follows: Source: A u x i l i a r y Mode: SQ Matrix Low & High F i l t e r s : Out Tone Controls : Out Tape Monitor: Source External Equalizer: Out Loud: Out Muting: Out Set a l i balance and tone controls t o the 0 mark. Component View. Ul MC1312U2 MC1315U3 MC1314Fixed r e s i s t o r R21 may be replaced with a lOK-ohm pot (R37) f o r proper gain adjustment of SQM-1 module. 5. Later p r o d u c t i o n u n i t s have R34, R35, R35 added t o SQM-1 board t o f a c i l i t a t e s e p a r a t i o n adjustment. These c o n t r o l s are p r e s e t and should n o t be a d j u s t e d unless MC1314 (U3) i s r e p l a c e d . 6. SQM-1 Test Procedure Use o f t h e CBS t e s t r e c o r d SQT-1100 i s r e q u i r e d when t e s t i n g t h e SQM-1. (This r e c o r d i s a v a i l a b l e from CBS S p e c i a l Products, Rooiti 884, 51 West 52nd S t r e e t , New York, New York 10019.) a. Using Band 1, side B, balance a l i f o u r o u t p u t s ( i n t h e s t e r e o mode) r e f e r e n c i n g 0 dB - 1 v o l t . b. Preset R15 a t 3 oclock. c. Using s i d e B, Band 5E (C t o C s i g n a l ) , a d j u s t R13 counter- V / F R c l o c k w i s e f o r a minimum o f 15 dB (measuring e i t h e r o r R R ) s e p a r a t i o n (or minimum rear-channel pumping). F R d. Using s i d e B, Band 4, v e r i f y l o g i e a c t i o n o f c i r c u i t r y as i n d i c a t e d under s p e c i f i c a t i o n s e c t i o n o f t h i s manual. REVISIONS I.YR DESCP.IPTICM 3 ITEM REV. & DOC. CODES DELETED ADDED COVER SHT/ ECO ffhkO-3 CHANCE ITEM 51 t o 10478-03 PER, ECO !lki0- 0_ D.M.M_. RELEASED - NO CHANGE/ECO #3821 CHG. P/N ITEMSJ0, /ECO 397/j 53 ,5 VECO ;400.2_ e CHQ PER ECO 4229,i285,Hl2 DAT-. S/27/h 10/9/i 10/30/) APVD ?/;/7CA0,CA1 10 103737 CAP., ELECTROLYTIC*; NON POLAR, 5uf, 15V PC C23,C24,C26.,C27 IO 10652-152 CAP., O.OOlSuf DISC CERAMIC PC Cl,C17,Cl8 12 13 10 1024 CAP., 0 . 0 0 6 8 u f , 5%, 5OV, HYLAR PC C3, C9 10 Oh2k5 CAP., 0 . 0 3 9 u f , 5%, 5OV, MYLAR PC C I , Zk, C8, CI l i 15 10 0k2hl CAP., 0.22uf, S%, 5OV, MYLAR PC C2, CIO 16 10 ME - 36 CAP., ELECTROLYTIC, P.C., . 7 u f , 35V PC C30, C31 102472 32108 FRAMIfiiGHAM. MA. PARTS tliST TITLE SO P.C. BOARD ASSEMBLY ASSY. NO. 103663 REV. REV STATUS OF SHEETS HEV SH, FINAL ENG. APPR. FREP. 3Y A.W.L. DATE 6A/7, APPR. DATE DATE SH 3 OF REV. DATE ITE:. CLASS CODE T -PART NUM3ER REV DESCRIPTION QTY. U/M REMARKS DOC. CODE COST (ACCT) IO 10250 CAP., TANTALUM, l u f , 10, 25V 2 PC 1 C33, C34 18 10 104251 CAP., TANTALUM, 1.5uf, 10, 25V 2 PC C37, C38 19 10 I0t252 CAP., TANTALUM, 4.7uf, 10%, 25V 3 PC C28, C29, C39 20 10 102399 CAP., O.Oluf DISC CERAMIC 2 PC C5.- C7 21 10 10560 CAP., ELECTROLYTIC, P.C., 25uf, 25V 2 PC C21, C45 22 10 104561 CAP., ELECTROLYTIC, P.G., 4 7 u f , 25V 2 PC C35, C36 23 10 103829 CAP., ELECTROLYTIC, P.C., lOOuf, 25V 2 PC C32, C46 25 35 102938-103 RESISTOR, _iW, COMP.; lOK, S% 1 PC R32 27 35 102938-203 RESISTOR, iW, COMP. , 20K, 5% 1 PC R31 28 35 102938-103 RESISTOR, iW, COMP., lOK, 5 3 PC R28, R29, R30 30 35 10292-362 RESISTOR, W, COMP. , 3.6K, 5% 4 PC R I , R2, R11, R12 . 31 35 102942-432 RESISTOR, iW, COMP., 4.3K, 5% 4 PC R3, R4, R9, R I O ! 32 35 102942-11 1 RESISTOR, -W, COMP., 110 OHM, S% 2 PC R I 3 , R34 33 35 102942-222 RESISTOR, iW, COMP. , 2.2K, S% 1 PC R23 j ; I -3 35 102942-821 RESISTOR, iW, COMP., 820 OHM, 5% 1 PC R33 t 35 3 5 102944-104 RESISTOR, iWCOMP., lOOK, 10 4 PC R5, R6, R7, R8 ( Z - ME - 3 RxfiEV, STATUS OF SHTS 32108 FRAMINGHAM. MA, PARTS LIST TITLE SH. SQ P.C. SOARD ASSEMBLY PRELIM. FINAL P H L P . B Y DATE HT 103663 REV. ENG. APPR. APPR. DATE DATE SH 4 OF k REV. DATE - . , 1 FEW - ! C L A S S CODE PART NUMBER REV 1 i 1 1 DESCRIPTION Q T Y . UM REMARKS DOC. CODE COST (ACCT) 36 35 102344-470 RESISTOR, iW, COMP., 47 OHM, G% 1 PC R19 37 35 102944-472 RESISTOR, iW, COMP. , 4.7K, 10% 1 PC R20 38 35 102944-474 RESISTOR, iW, COMP. , 4 7 0 K , 10 4 PC R24, R25, f26, R27 0 k 36 104095-1242 RESISTOR, iW, FILM, 12.4K, % 1 PC R22 0 k 36 1 0 4 0 9 5 - 6 3 4 1 RESISTOR, iW, F I L M , 6 . 3 4 K , 10 1 PC R21 hi 38 1 0 4 2 9 9 - 1 0 3 POTENTIOMETER il PC R18, R37, R 3 5 , R36 kk 40 1 0 2 4 1 0 DIODE 1 PC CRI J 5 40 1 0 4 2 5 7 . 1 INTEGRATED CIRCUIT, MC132P 1 PC U 46 4 0 104258 INTEGRATED CIRCUIT, MC134P 1 PC U3 hi 40 104259 INTEGRATED CIRCUIT, MC1315P 1 PC U2 3 4 0 103851 TRANSISTOR, PNP, 2N3644 1 PC Ql 51 5 0 104784-03 #22 BUS WIRE, PREFORMED 12 PC 52 65 100407-5 NAMEPLATE, SERIAL NO. 1 PC i 53 80 O6373 PRODUCTION TAG 1 PC 1 INDUSTRIAI I:G;NR;:l 54 65 102171 TAPE, MAS KING 1 IN D A T E L0/j0/C:, 1 ME - 36 CR1123456781615141312111091234567814131211109U1 : MC1312P12345678161514131211109U3 : MC1314PU2 : MC1315PBCEQ1C42R xC33C5R6R5C6C11R7C7R8C2R2C4R4C3R3C1R1C10R11R14C13R22R31C28C24C23C29C45C25C31C26C27C30R24R32R25C40C16R16C17R28C19R17C18R29R10C9R9C8C15R15C14R30C44R18C21C38C37R20R19C41C21R23C32R33R13R21C34C35C36211511497810561331415R inputL input+15VLFoutputLogiccontrol QRFoutputLogic control RRR outputLR outputLogic control OLogic control PGNDLogic control N-15 V+15 VBOSE SQM-1 FULL LOGIC DECODER BOARDDWG nr. 103663