Service Manuals, User Guides, Schematic Diagrams or docs for : . Rare and Ancient Equipment Mc INTOSH Audio MC602 hfe_mcintosh_mc602_service
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POWER AMPLIFIER
CONTENTS
Performance Specifications ........................................ 2 Capacitor Schematic and PCB ................................. 15
Notes ......................................................................... 2 Meter Schematic and PCB ................................. 17 - 19
Rear Panel .................................................................. 3 Indicator Schematic and PCB ................................... 20
Section Location ........................................................ 4 PG Light Schematic and PCB ............................ 21 - 22
Block Diagram ...................................................... 5 - 6 Meter Lamps Schematic and PCB ..................... 21 - 22
Interconnection Diagram ...................................... 7 - 8 Standby Light Schematic and PCB .................... 21 - 22
Heatsink Schematic and PCB .............................. 9 - 10 Parts List ............................................................ 23 - 24
Driver Schematic and PCB ................................ 11 - 13 Exploded View and Parts List ............................. 25 - 28
Input Schematic and PCB ......................................... 14 Repacking Instructions ............................................. 29
SERVICE MANUAL
PERFORMANCE SPECIFICATIONS
POWER OUTPUT STEREO SENSITIVITY
600 watts into 2, 4 or 8 ohm loads is the minimum sine 2.45 Volts Unbalanced Input
wave continuous average power output per channel with 4.9 Volts Balanced Input
both channels operating.
INPUT IMPEDANCE
OUTPUT LOAD IMPEDANCE 10,000 ohms Unbalanced and Balanced
2, 4 or 8 ohms
WIDE BAND DAMPING FACTOR
RATED POWER BAND 100 @ 8 ohms
20Hz to 20,000Hz
POWER REQUIREMENTS
DYNAMIC HEADROOM 100 Volts, 50/60Hz at 18 amps
2.1dB 110 Volts, 50/60Hz at 16.5 amps
120 Volts, 50/60Hz at 15 amps
FREQUENCY RESPONSE 220 Volts, 50/60Hz at 8.2 amps
+0, -0.25dB from 20Hz to 20,000Hz 230 Volts, 50/60Hz at 7.8 amps
+0, -3dB from 10Hz to 100,000Hz 240 Volts, 50/60Hz at 7.5 amps
NOTE: Refer to the rear panel of the MC602 for the correct voltage.
TOTAL HARMONIC DISTORTION
0.005% maximum at any power level from 250 milliwatts DIMENSIONS
to rated power per channel from 20Hz to 20,000Hz, all Front Panel: 17-3/4 inches (46cm) wide, 11 inches (28cm)
channels operating. high. Depth behind front mounting panel is 19-5/8 inches
(49.83cm). Clearance required in front of front panel is
INTERMODULATION DISTORTION 1-3/4 inches (4.5cm).
0.005% maximum if instantaneous peak output per chan-
nel does not exceed twice the rated output with all chan- WEIGHT
nels operating for any combination of frequencies from 155lbs. (70.3kg) Net
20Hz to 20,000Hz. 180lbs. (81.6kg) Shipped
SIGNAL TO NOISE RATIO (A WEIGHTED)
93dB Unbalanced (120dB below rated output)
97dB Balanced (124dB below rated output)
NOTES
1. The heavy notes on the schematic denote the primary 4. On PC board drawings, Square pad indicates:
signal path. a. Polarized Capacitors - Positive
b. Diodes - Cathode
2. Unless otherwise noted, all voltages indicated on the c. Others - Pin 1
schematics are measured under the following conditions:
a. AC input at 120 volts, 50/60Hz. 5. WARNING
b. All voltages are +/-10% with respect to ground. A Parts marked with the symbol have critical
high impedance (10 megaohm) voltmeter must be used. characteristics. Use only replacement parts recom-
mended by the manufacturer.
3. Unless otherwise specified:
a. Resistor values are in ohms.
b. Capacitor values are microfarads (uF).
c. Inductor values are in microhenries (uH)
.
2
MC602
REAR PANEL
3
SECTION LOCATIONS
4
MC602
BLOCK DIAGRAM
5 6
INTERCONNECT
7 8
MC602
2A 2B 2C 2D
HEATSINK 049368
9 10
3 DRIVER 049369
11 12
MC602
3 DRIVER 049369 4 INPUT 049222
13 14
5 CAPACITOR 049367 NOTES
15 16
MC602
6 METER 049384
17 18
6 METER 049384
7 INDICATOR 049371
19 20
MC602
8 PG LIGHT 049370
9 METER LAMPS 049373
10 STANDBY LIGHT 049395
21 22
PARTS LIST
Part No. Description Reference No.
049368 HEATSINK
061300 MONO CAP 100PF 100V 5% NPO T&R C7 C8 144028 RES MF 866 1% 1/4W R2 R4 R30 R57 R64 R65 R83 R91 117279 11-POS. MALE CONN J1- J2-
061304 MONO CAP .01UF 50V 5% X 7R T&R C9 C16 144071 RES MF 365 1% 1/4W R17 R18 R19 R20 R21 R22 R23 R29 117708 FASTON BLADE W/FEET J12 J15 J16
061305 MONO CAP .1UF 50V 5% Z50 T&R C3 C5 R42 R43 R44 R45 R46 R47 R48 R67 131021 TRIAC 8A 200V Q12
064363 CAP POLYPROP 0.15MF 10% 250VDC C10 144090 RES MF 1K 1% 1/4W R60 R86 131022 600V TRIAC DRIVER OPTOCOUPLER Q23
066446 CAP ELECT 47MF 35V C1 C2 144095 RES MF 3.32K 1% 1/4W R53 R69 R72 R75 R92 R95 R97 R98 132223 TRANSISTOR NPN MPS4124 2K/REEL Q1 Q2 Q13 Q14 Q15 Q16 Q17 Q20
070047 SILICON DIODE 1N4148 T&R D1 D2 D3 D4 D5 144097 RES MF 4.75K 1% 1/4W R58 R84 132224 TRANSISTOR PNP Q18 Q22
070133 DIODE 200V,6A D6 D7 144108 RES MF 47.5K 1% 1/4W R61 R63 R87 R90 132226 TRANSISTOR P.CHANNEL JUNC.FET Q19
117213 2-PIN MALE CONNECTOR J4- 144113 RES MF 100K 1% 1/4W R76 R77 R78 R79 132242 TRANSISTOR POWER N-CHN Q10 Q11
117217 MALE CONN 7 PIN J1- 144128 RES MF 1.5K 1% 1/4W R10 R12 R35 R37 132254 TRANSISTOR NPN Q8 Q9 Q24 Q25
117404 HEADER 2-PIN 0.156 J2- 144172 RES MF 221 1% 1/4W R6 R24 R31 R49 R150 R151 R152 133093 IC REGULATOR +5 VOLT Q21
117708 FASTON BLADE W/FEET J4 R153 133155 IC REGULATOR -12V IC7
117712 FASTON BLADE .110 J5 144179 LDR NETWORK VTL5C9 LDR1 LDR2 133156 IC REGULATOR 12V IC6
132171 TRANSISTOR NPN Q1 144187 RES MF 22.1K 1% 1/4W R7 R32 R101 133189 IC OPERATIONAL AMPLIFIER IC2 IC4
132172 TRANSISTOR SI PNP MPSA55 Q2 144196 RES MF 100 1% 1/4W R5 R62 R89 R100 133192 IC NAND SCHMIT 2-IN X 4 IC5
132285 TRANSISTOR NPN 25C3334C Q6 144265 RES MF 2.21M 1/4W R9 R15 R34 R40 133260 DUAL OPERATIONAL AMPLIFIER IC3
132286 TRANSISTOR PNP 2SA32IC Q7 144298 RES MF 2.21K 1% 1/4W R103 R105 134383 TRIM POT 100K OHM 20% R1 R2
134390 TRIM POT 200 OHM 20% HORIZ AD R13 144338 RES MF 324 OHM 1% 1/4W R16 R41 R66 R71 R73 R88 R93 R99 139079 WIRE RES 1.5K 10% 5W R68
137093 MET OX 680 5% .5W R2 R9 144352 RES MF 174K 1% 1/4W R14 R39 R59 R85 139218 2.7 OHM 2W 5% WW RESISTOR FP R69
137094 MET OX 1.8K 5% .5W R6 R11 144364 RES MF 475K 1% 1/4W R8 R33 R55 R81 141023 RES CF 8.2 5% 1/4W R35 R39
137095 MET OX 430 5% .5W R7 144398 METAL FILM RES 3.79K .5% 1/4W R11 R25 R38 R50 144015 RES MF 33.2K 1% 1/4W R6 R17 (R61 & R62 ARE FOR CONVERSION)
137096 MET OX 47 5% .5W R12 144401 RES MF 6.49K .5% 1/4W R13 R26 R36 R51 144083 RES MF 5.11K 1% 1/4W R47
139177 WIREWOUND RES 0.5 OHM 5W 5% R31 R32 R33 R34 R35 R36 144443 METAL FILM RES 681K 1% 1/4W R68 R70 R94 R96 144091 RES MF 1.1K 1% 1/4W R60
R37 R38 R40 R41 R42 R43 144095 RES MF 3.32K 1% 1/4W R50
144071 RES MF 365 1% 1/4W R1 R8 049222 INPUT 144097 RES MF 4.75K 1% 1/4W R4 R42
144187 RES MF 22.1K 1% 1/4W R3 R10 061191 DISC CAP 22PF,10%,NPO 50V C11 C12 144108 RES MF 47.5K 1% 1/4W R44
144243 RES WW 0.1 5% 1W R39 061196 DISC CAP 47PF,20%,N470 50V C7 C8 144117 RES MF 200K 1% 1/4W R7 R11 R23 R37
144249 THERMAL SENSOR RT1 061248 DISC CAP .1MF,25V,Y5T C9 C10 144154 RES MF 12.1K 1% 1/4W R45 R51 R66
144378 RES MF 2.21 OHM 1/4W 1% R30 066445 ELECT CAP 10MF, 50V AMMO PACK C1 C2 C4 C6 144181 RES MF 18.2K 1% 1/4W R9 R33
117219 MALE CONN 10 POS J7- 144187 RES MF 22.1K 1% 1/4W R5 R14 R55 R57
049369 DRIVER 117436 PJ261G PHON JACK, GOLD J2- 144195 RES MF 681 1% 1/4W R58 R67
061002 DISC CAP 1.8PF+/-.25PF NPO C42 C43 117494 MINI JACK J11- J12- 144196 RES MF 100 1% 1/4W R10 R34 R56
061199 DISC CAP 100PF 10% N1500 50V C2 C3 C4 C5 C6 C7 C8 C9 117685 XLR RECEPTACLE FEMALE J3 J4 144199 RES MF 3.16K 1% 1/4W R43 R48
061248 DISC CAP .1MF,25V,Y5T C1 C10 133260 DUAL OPERATIONAL AMPLIFIER IC1 144210 RES MF 7.5K 1% 1/4W R65
061256 M.CAP 470PF,5%,100V C26 C27 C28 C29 141025 RES CF 100 5% 1/4W R130 144264 RES MF 10M 1% 1/4W R8 R32
064308 CAP MPOLY .0047UF 5% 63-250VDC C34 C35 C36 C37 144053 RES MF 10K 1% 1/4W R131 R133 R135 R138 R140 R142 144269 RES MF 1M 1/4W R54 R59
064316 CAP M POLY .022UF 5% 63VDC C38 C39 144352 RES MF 174K 1% 1/4W R132 R136 R137 R139 144271 RES MF 2.74M 1/4W R12 R41 R64
064363 CAP POLYPROP 0.15MF 10% 250VDC C30 C31 C32 C33 148059 SLIDE SWITCH S1 144296 RES MF 1.82K 1% 1/4W R63
064364 CAP POLYPROP .047MF 10% 250V C22 C23 C24 C25 144364 RES MF 475K 1% 1/4W R71 R72
066244 CAP ELECT 0.47UF 50V 20% C20 C21 049367 CAPACITOR 144406 METAL FILM RES 187K 1% 1/4W R46 R49 R52 R53
066327 CAP ELECT 470UF 10V C40 C41 117404 HEADER 2-PIN 0.156 J1 J2 J3 J4 144419 MF RES 150K 1% 1/4W R30 R31 R36 R40 R70
066446 CAP ELECT 47MF 35V C15 C18 117708 FASTON BLADE W/FEET J5 J6 J7 J8 J9 J10 J11 J12 159215 CURRENT TRANSFORMER T1 T2
066462 CAP ELECT 1OUF 100VDC C11 C12 C13 C14 C16 C17 C19 178159 FUSE HOLDER 5X20MM PCB MOUNT F1
117215 4-PIN CONNECTOR J8 J9 049384 METER
117217 MALE CONN 7 PIN J1- J2- J3- J4- 061305 MONO CAP .1UF 50V 5% Z50 T&R C14 C21 C22 C25 C26 049371 INDICATOR
117219 MALE CONN 10 POS J7- 064329 CAP M POLY .22UF 5% 63VDC C15 C16 C28 058120 LAMP 14V #7373 DS1 DS2 DS9 DS13
117279 11-POS. MALE CONN. J6- 064337 CAP M POLY 1MF 5% 63VDC C11 C12 117213 2-PIN MALE CONNECTOR J6- J7-
132222 N. CHANNEL FET Q2 Q3 Q5 Q6 Q7 Q8 Q10 Q11 066289 CAP ELECT 4.7UF 10% 35V C27 117215 4-PIN CONNECTOR J4- J9-
132223 TRANSISTOR NPN MPS4124 2K/REEL Q12 Q13 Q17 Q19 Q24 Q25 Q29 066309 CAP ELECT 1000UF 10V C1 C2 117279 11-POS. MALE CONN. J3-
Q31 Q36 Q67 Q70 Q78 Q80 066361 CAP ELECT 1000UF 20% 35V C30 C31
132224 TRANSISTOR PNP Q1 Q16 Q20 Q22 Q23 Q28 Q32 066506 CAP ELECT 22UF 100V C29 049370 PG LIGHT
Q34 Q35 Q37 Q38 Q39 Q59 Q66 070047 SILICON DIODE 1N4148 T&R D1 D2 D3 D4 D5 D6 D7 D9 D10 058133 AMBER LED D1 D2
132254 TRANSISTOR NPN Q14 Q18 Q26 Q30 Q60 Q63 Q64 D13 D14 D15 D16 D17 D18 D19 117215 4-PIN CONNECTOR J10-
Q71 Q74 Q75 Q76 Q77 D21 D22 D23 D24 D25 D28
132255 TRANSISTOR PNP Q15 Q21 Q27 Q33 Q61 Q62 Q65 070085 ZENER DIODE 6.2V 5% 500MW D27 049373 METER LAMPS
Q68 Q69 Q72 Q73 Q79 070114 ZENER DIODE 16V 5% 500MW D26 D29 058120 LAMP 14V #7373 DS3 DS4 DS5 DS6 DS8 DS10
132285 TRANSISTOR NPN 25C3334C Q55 Q56 Q57 Q58 070131 DIODE RECTIFIER D30 D31 D32 DS12 DS14
132286 TRANSISTOR PNP 2SA32IC Q40 Q41 Q42 Q43 080014 HEATSINK T0220 ATTACH TO Q10 Q11 Q12 117215 4-PIN CONNECTOR J2-
133260 DUAL OPERATIONAL AMPLIFIER IC1 087049 RELAY 48VDC VFB48HU ITT TAKAMI K1
137042 FLAMEPROOF RES 47 OHM 5% 1/4W R3 R27 R74 R80 089089 FUSE 2A SLO-BLO 5X20 F1 049395 STANDBY LIGHT
139005 WIRE RES 2 OHMS 10% 5W R110 R112 R114 R116 117214 MALE CONN 3-POS MTS100 NORMAL J8- 058148 RED LED HIGH EFFICIENCY DS15
139119 WIRE RES 4 OHMS 5% 5W R109 R111 R113 R115 117215 4-PIN CONNECTOR J10-
117215 4-PIN CONNECTOR J8-
144015 RES MF 33.2K 1% 1/4W R104 R106 R107 R108 117217 MALE CONN 7 PIN J9-
23 24
MC602
EXPLODED VIEW 1 0F 2
25 26
EXPLODED VIEW 2 OF 2
AND PARTS LIST
39 084180 ISOSTRATE
40 049368 HEATSINK PCB ASSY
41 114118 TRANSISTOR CLIP 218
42 114119 TRANSISTOR CLIP 214
43 112087 PCB SPACER 1/4"
44 101059 SM 6 X 5/8 PHIL PAN TYPE A
45 005058 HEATSINK COVER LEFT
46 005055 HEATSINK COVER RIGHT
47 005050 CAPACITOR COVER
48 104007 LK WASHER 6 X .288 INT STAR
49 049367 CAP PCB ASSY
50 100188 SEMS MS 10-32 X 3/8 INDENTED
51 066489 27000uf 100V ELECTROLYTIC
52 005061 CAPACITOR CLAMP
53 100250 SEMS MS 6-32 X 1/4 PHIL PAN
54 102045 KEP NUT 6-32 SPECIAL
55 005042 REAR PANEL
56 101197 HI/LO 4-24 X 3/8 PH ROUND BLK
57 104142 LOCKWASHER 2.5mm INT STAR ZINC
58 101114 SM 4-24 X 1/2 PHIL PAN TYPE A
59 104095 LK WASH: #4 INT STAR
60 049222 INPUT PCB ASSY
61 004954 HEATSINK VENT COMPLETE
62 101176 TCS 6-32 X 1/2 PH PAN BLK TYPE F
63 005043 SUBREAR PANEL
64 005057 FRONT SUPPORT BRACKET
65 005041 CHASSIS SUPPORT BRACKET
66 102006 MACH NUT: 10-32 W/LOCK
67 070139 RECTIFIER BRIDGE MC1000
68 084135 THERMAL PAD MC7150
69 078034 GROMMET
70 074091 AC TERMINAL BLOCK
71 104001 FLAT STEEL WASH #4 X 9/32 X .025
72 104004 LK WASH 5 X .255 INT STAR
73 102022 MN 4-40 X 3/16
74 049370 PG PCB ASSY
75 024010 FOOT PAD
76 049369 DRIVER PCB ASSY
77 017770 PCB SHEILD
Ref Part Description 78 017160 MOUNTING TAB W/.140 DIA MTG
No. No. 79 102005 MACH NUT: 8-32 W/LOCK
80 104014 LK WASHER 3/8 X .507 INT STAR
1 016416 FRONT GLASS FAB 20 104137 FIBRE WSHR .125ID X .312OD X.062 81 088022 CIRCUIT BREAKER 20AMP 250VAC
2 018631 HANDLE FRONT 21 102001 KEP NUT 4-40 CADMIUM PLATE 82 102032 HEX NUT 3/8-32 X 1/16 THK-HEX
3 018633 PANEL SIDE 22 049371 LIGHT PCB ASSY 83 117487 MC1000 AC LINE RECEPT
4 049321 KNOB ASSEMBLY MC352 23 049395 STANDBY LIGHT PCB ASSY 84 117740 BINDING POST RED
5 104017 BLK FELT WASH: 3/4 X 1/4 X 1/16 24 112038 STL SPACER 4 X 3/8L NICKEL PLT 85 117741 BINDING POST BLACK
6 100200 MS 10-32 X 1/2 PH TRUSS BLK 25 124073 PANEL METER MC552 86 104162 LOCKWASHER INTERNAL TOOTH
7 092418 DISPLAY FILTER BLUE 26 092400 BLUE FILTER AZURE 87 102052 NUT GOLD SUPPLIED W/117758
8 017798 DISPLAY PLEXIGLAS 27 092401 BLUE FILTER PALE 88 102051 HEX NUT M9 X .75 GOLD PLATED
9 005049 PANEL PLATE 28 017749 METER LIGHT BOX 89 100102 1/4 - 20 X 3/8 PAN PH BLK ZINC
10 101142 SOCKET HEAD CAP SCREW ALLEN 29 102003 MACH NUT 6-32 W/LOCK 90 102020 MCH NUT: 6-32 SLF-LOCK
11 101078 TS 8-32 X 5/16 PHIL PAN BLK 30 049384 METER PCB 91 018632 HANDLE BACK
12 101172 TS 6-32 X 1/4 PHIL FLAT U/C 31 114072 PLASTIC RIVET: NYLON (POP-IN) 92 017797 TERMINAL BLOCK COVER
13 005052 DUST COVER 32 005059 METER SUPPORT BRACKET 93 005045 BOTTOM COVER
14 005044 SUBPANEL 33 049365 OUTPUT TRANSFORMER POT 94 018445 FOOT MC1000
15 146243 POWER SWITCH 34 049366 POWER TRANSFORMER POT 95 104080 FLAT WASHER #10 CLEAR ZINC
16 021159 BUSHING SWITCH 35 078025 RUBBER GROMMET 3/4 96 100159 MS 10-32 X 3/4 PH PAN BLK ZINC
17 005054 GUSSET BRACKET LEFT 36 101054 TS 6-32 X 1/4 PH PAN TAPTITE BLK 97 126666 TOP COVER DECAL
18 005060 RIGHT GUSSET BRACKET 37 005048 STAINLESS CHASSIS W/PEMS 98 126592 OUTPUT TRANSFORMER DECAL
19 049373 LAMP PCB ASSY 38 018627 HEATSINK COMPLETE 99 126593 POWER TRANSFORMER DECAL
27 28
REPACKING INSTRUCTIONS
29
POWER AMPLIFIER
SERVICE MANUAL
The continuous improvement of it's products is the policy of McIntosh Laboratory Incorporated, who reserve the right to improve design without notice.
Because of the constant upgrading of McIntosh products' circuitry and components, the Company cannot insure, and does not warrant, the accuracy of the
within schematic material, which is intended for information only.
McINTOSH LABORATORY, INC., 2 CHAMBERS STREET, BINGHAMTON, NEW YORK 13903 Printed in U.S.A. Part Number 040689
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