User manual MCINTOSH MA5 SCHEMATICS

[. . . ] Internal Impedance/Damping: Less than . 04 ohms; damping factor greater than 100. Input Sensitivity And Impedance: Auxiliary, Tape, Tuner, and Tape Monitor: 300mV, 250K ohms. Hum And Noise: High Level Inputs: 75dB below rated output. [. . . ] Power Amplifier: 90dB below rated output. Tape Output: 300mV at rated sensitivity, 1. 4 volts with 10mV at phono input. Left Plus Right Output: Adjustable 0 to 6 volts from generator impedance of less than 5, 000 ohms. Power Requirements; 117 volts AC, 50-60Hz, 70 watts at zero signal output, 200 watts at rated output. No impedance switching required. MA 5100 MA 5100 B L O C K DIAGRAM MA 5 1 0 0 PREAMP. SECTION P R I N T E D C I R C U I T B O A R D 043-989 H E A V Y LINE SHOWS P R I M A R Y S I G N A L PATH PREAMP. SECTION MA 5100 154-411 H E A V Y LINE S H O W S P R I M A R Y SIGNAL PATH POWER OUTPUT SECTION MA 5100 154-376 MA 5 1 0 0 OUTPUT MONITOR PRINTED CIRCUIT BOARD 0 4 3 - 8 2 1 ( NOTE 1 ) LEFT CHANNEL POWER OUTPUT SECTION PRINTED CIRCUIT BOARD 043-919 RIGHT CHANNEL POWER OUTPUT SECTION P R I N T E D CIRCUIT BOARD 043-919 MA 5100 FILTER SECTION PRINTED CIRCUIT BOARD 043-990 FILTER SECTION PRINTED CIRCUIT BOARD 043-990 FILTER SECTION MA5 154-410 SCHEMATIC NOTES Unless otherwise specified: Resistance values are in ohms, 1/2 watt, and 10% tolerance; capacitance values smaller than 1 are in microfarads ( m f d ) ; capacitance values greater than 1 are in picofarads (pF) ; inductors are in microhenries (µH). Printed circuit board components are outlined on the schematics by dotted lines. The circled numbers on the dotted lines correspond to the numbers of the PC board layouts. D211, D212, D213, and D214 are In units with serial numbers below 22H00: R227 & R228 were 1K, 1 % 1W, 0, In units with serial N o ' s below 54H60: R254 and R255 are 18 F202, F203j and F204 are 3A fuses. 089019) and F201, LOCATION OF T R A N S I S T O R S NOT ON PRINTED CIRCUIT BOARDS MA 5100 POWER SUPPLY SECTION MA 5100 154-331 MA 5100 REPLACEMENT PARTS A l l p a r t s not l i s t e d a r e common items o b t a i n a b l e from r a d i o p a r t s j o b b e r s . Replacement p a r t s may be obtained when ordered by PART NUMBER from: M c l n t o s h Laboratory, Inc. C u s t o m e r S e r v i c e Department 2 Chambers S t r e e t B i n g h a m t o n , New Y o r k 13903 (telephone 6 0 7 - 7 2 3 - 3 5 1 2 ) CAPACITORS Symbol Number Description Mylar Mylar Elect. . 22µF . 1µF 100µF . 1µF . 1µF . 47µF . 47µF 100µF . 47µF . 22µF . 1 . 01µF . 22µF 1µF 1. 5µF 100µF 180µF . 047µF . 047µF 10µF µF 250V 250V 12V 250V 250V 75V 250V 12V 250V 200V 250V 250V 250V 35V 35V 12V 3V 250V 250V 25V Part Number 064-043 064-037 066-127 064-037 064-037 064-039 064-045 066-127 064-045 064-087 064-038 064-040 064-043 066-091 066-092 066-127 066-111 064-044 064-044 066-005 D301 Si. Si. rectifier rectifier rectifier rectifier rectifier rectifier rectifier rectifier 070-031 D302 D303 D304 D305 D306 D307 D308 D309 070-031 070-031 070-031 070-041 070-041 070-041 070-041 070-030 Si. rectifier FUSES C1 , 2 C7, 8 F201 , 2 0 2 Fuse Fuse 4A ( S F E - 4 ) 4A ( S F E - 4 ) 089-021 089-021 089-015 C9 , 10 C11 , 12 C 1 3 , 1 4 C15, 16 C 1 7 , 18 F203, 204 F301 Fuse 2 . 5 A S l o - B l o CHOKES L201 , 2 0 2 Choke 2µH TRANSISTORS 122-064 C19, 20 C21 , 22 Q1, 2 Q3, 4 Q5, 6 Q7, 8 Q9, 10 Si. Si. NPN NPN NPN NPN NPN NPN NPN PNP PNP PNP NPN PNP transistor transistor transistor transistor transistor transistor transistor transistor transistor transistor transistor transistor 132-041 132-041 132-051 132-041 132-057 132-051 132-057 132-029 132-029 132-029 132-021 132-032 132-515 132-022 132-521 132-527 132-533 132-533 C23, 24 C101 , 102 C 1 0 3 , 104 C 1 0 7 , 108 C11 1 Q11, 12 Q101 , 102 C1 12, 113 C203, 204 C207, 208 C21 1 , 2 1 2 Q 1 0 3 , 104 Q201 , 2 0 2 Q203, 204 Q207, 208 Q209, 210 Q211 , 212 Q211 , 212 C213, 214 C223, 224 C304 C305 C306 C307 C308 C309 S i . [. . . ] NPN t r a n s i s t o r ( f o r u n i t s above 2 2 H 6 0 ) S i . NPN t r a n s i s t o r ( f o r u n i t s below 2 2 H 6 0 ) Si. NPN PNP NPN 80/80/150/50µF 066-103 200/200/150/150V 200/500µF 100/50V 200/500µF -100/-75V 100µF 9300µF 9300µF DIODES 12V 45V 45V 066-099 066-093 066-127 066-106 066-106 Q213, 214 Q215, 216 Q217, 218 Q219, 220 transistor transistor transistor S i . [. . . ]