Bose-4401SQM1-dec-si维修电路原理图.pdf

《Bose-4401SQM1-dec-si维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Bose-4401SQM1-dec-si维修电路原理图.pdf（10页珍藏版）》请在收音机爱好者资料库上搜索。

1、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

2、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

3、 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 betw

4、een 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 incorporat

5、ing 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, Com

6、p, 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,

7、 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

8、 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

9、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 10

10、4251 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 PAG

11、E 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 SCHEMAT

12、IC 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

13、 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: S

14、ource 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 h

15、ave 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

16、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

17、 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

18、 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 #382

19、1 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, HYL

20、AR 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 S

21、TATUS 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,

22、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

23、 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

24、.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

25、- 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 3

26、5 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

27、. 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 TRANSISTO

28、R, 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 : MC1312P1234567816151

29、4131211109U3 : 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