McIntosh MC207 Service Manual
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Performance Specifications ........................................ 2
Notes ......................................................................... 2
Rear Panel .................................................................. 3
Section Location ........................................................ 5
Block Diagram ........................................................... 6
Interconnection Diagram ...................................... 7 - 8
Input Schematic and PCB .................................... 9 - 12
Heatsink 1-Channel Schematic and PCB ............ 13 - 18
POWER AMPLIFIER
CONTENTS
SERVICE MANUAL
Heatsink 2-Channel Schematic and PCB ............ 21 - 26
Display Schematic and PCB ............................... 29 - 32
Capacitor Schematic and PCB .................................. 33
Power Supply Schematic and PCB ..................... 34 - 35
Parts List ............................................................ 36 - 42
Exploded Views and Parts Lists .......................... 43 - 46
Repacking Instruction .............................................. 47

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Summary of Contents for McIntosh MC207

  • Page 1: Table Of Contents

    POWER AMPLIFIER CONTENTS Performance Specifications ........2 Heatsink 2-Channel Schematic and PCB .... 21 - 26 Notes ................. 2 Display Schematic and PCB ....... 29 - 32 Rear Panel ..............3 Capacitor Schematic and PCB ........33 Section Location ............5 Power Supply Schematic and PCB .....
  • Page 2: Performance Specifications

    240 Volts, 50/60Hz at 6.0 amps 1.0 Volt Unbalanced with a 4 ohm Loudspeaker Note: Refer to the rear panel of the MC207 for the correct voltage. 2.0 Volt Balanced with a 4 ohm Loudspeaker 1.4 Volt Unbalanced with a 8 ohm Loudspeaker Dimensions 2.8 Volt Balanced with a 8 ohm Loudspeaker...
  • Page 3: Rear Panel

    MC207 REAR PANEL...
  • Page 4 NOTES...
  • Page 5: Section Location

    MC207 SECTION LOCATIONS TOP VIEW TOP VIEW WITH COVER REMOVED...
  • Page 6: Block Diagram

    BLOCK DIAGRAM...
  • Page 7 MC207 INTERCONNECT...
  • Page 8 INPUT 050065...
  • Page 9 MC207 INPUT 050065...
  • Page 10 HEATSINK 1-CHANNEL 050070...
  • Page 11 MC207 HEATSINK 1-CHANNEL DRIVER SECTION 050070...
  • Page 12 HEATSINK 1-CHANNEL 050070 * Denotes components on reverse or backside of PC Board.
  • Page 13 MC207 NOTES...
  • Page 14 HEATSINK 2-CHANNEL 050064...
  • Page 15 MC207 HEATSINK 2-CHANNEL DRIVER SECTION 050064...
  • Page 16 HEATSINK 2-CHANNEL DISPLAY 050064 ILLUMINATION SECTION 050066 * Denotes components on reverse or backside of PC Board.
  • Page 17 MC207 DISPLAY DISPLAY METER SECTION 050066 POWER GUARD SECTION 050066...
  • Page 18 DISPLAY 050066 * Denotes components on reverse or backside of PC Board.
  • Page 19 MC207 CAPACITOR 050063 * Denotes components on reverse or backside of PC Board.
  • Page 20 POWER SUPPLY 050062...
  • Page 21 MC207 POWER SUPPLY 050062...
  • Page 22: Parts List

    PARTS LIST Part Description 050065 INPUT PCB CAP MONO 47PF 200V 10% NPO CAP ELECT 10UF 16V 4X5 CASE 061299 066382 CAP ELECT 10UF 16V 4X5 CASE CAP ELECT 10UF 16V 4X5 CASE 066382 066382 CAP MONO 47PF 200V 10% NPO CAP MONO 47PF 200V 10% NPO 061299 061299...
  • Page 23: Parts List

    MC207 PARTS LIST con’t RECEPTACLE XLR FEMALE 117685 RES MF 221 OHM 1% 1/4W 144172 JACK RCA 1X2 BLK/BLK 14MM RES MF 100K 1% 1/4W 144113 117848 RES MF 20K 1% 1/4W 144104 CONN 4 PIN 117215 RES MF 10K 1% 1/4W...
  • Page 24 PARTS LIST con’t CAP ELECT 10UF 100VDC 066462 TRANSISTOR PNP 132224 CAP ELECT 10UF 100VDC 066462 TRANSISTOR PNP 132224 CAP ELECT 10UF 100VDC 066462 TRANSISTOR NPN 132223 CAP ELECT 10UF 100VDC 066462 TRANSISTOR NPN 132223 CAP ELECT 220UF 50V 20% 066254 TRANSISTOR NPN 132223 CAP ELECT 10UF 100VDC...
  • Page 25 MC207 PARTS LIST con’t RES MF 100 OHM 1% 1/4W 144196 CAP MONO 100PF 100V 10% NPO RES MF 14.7K 1% 1/4W 144149 061300 RES MF 221 OHM 1% 1/4W 144172 CAP MONO 100PF 100V 10% NPO RES MF 267K 1% 1/4W...
  • Page 26 PARTS LIST con’t DIODE SILICON 070047 TRANSISTOR PNP POWER 132297 DIODE SILICON 070047 TRANSISTOR PNP 132224 DIODE RECTIFIER 070131 TRANSISTOR SI NPN 25V 132254 DIODE RECTIFIER 070131 TRANSISTOR PNP POWER 132255 DIODE SILICON 070047 TRANSISTOR SI NPN 25V 132254 DIODE SILICON 070047 TRANSISTOR NPN 132223...
  • Page 27 MC207 PARTS LIST con’t RES MET OX 47 OHM 5% .5W RES MF 267K 1% 1/4W 144118 137096 RES MF 221 OHM 1% 1/4W 144172 POT TRIM 200 OHM 20% HORIZ AD RES MF 3.32K 1% 1/4W 144095 134390 RES MF 3.32K 1% 1/4W...
  • Page 28 PARTS LIST con’t R105 RES MF 6.49K 1% 1/4W 144140 DIODE SILICON 070047 R106 RES MF 475 OHM 1% 1/4W 144086 DIODE SILICON 070047 R107 RES MF 475 OHM 1% 1/4W 144086 DIODE SILICON 070047 R108 RES MF 6.49K 1% 1/4W 144140 DIODE SILICON 070047...
  • Page 29 MC207 MC207 EXPLODED VIEW...
  • Page 30: Exploded Views And Parts Lists

    MC207 EXPLODED VIEW and PARTS LIST Part Description 016507 GLASS 114118 TRANSISTOR CLIP 218 094360 TAPE FOAM 1/2 X 1/2 114119 TRANSISTOR CLIP 214 004939 BRACKET EXTRUSION 005007 ASSY HEATSINK PCB 1 CH 018615 END CAP 9” 005439 COVER HEATSINK CH 5-6...
  • Page 31: Repacking Instruction

    MC207 REPACKING INSTRUCTION...
  • Page 32 SERVICE MANUAL The continuous improvement of its 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.
  • Page 33 144446 R123 RES MF 22.1K 1% 1/4W 144187 POT TRIM 200 OHM 20% HORIZ AD 134390 R124 RES MF 47.5K 1% 1/4W 144108 MC207.SMA01.040929 090204 RES MF 475K 1% 1/4W 144364 SENSOR THERMAL 144249 MCINTOSH LABORATORY, INC., 2 CHAMBERS STREET,...
  • Page 34 LDR NETWORK 144179 RES MF 10K 1% 1/4W 144053 HEATSINK 2-CHANNEL TRANSISTOR NPN 132223 RES MF 47.5K 1% 1/4W 144108 050064 HEATSINK ASSEMBLY 050188 TRANSISTOR PNP 132224 RES MF 1.1K 1% 1/4W 144091 TRANSISTOR NPN 132268 RES MF 4.75K 1% 1/4W 144097 TRANSISTOR PNP 132267...

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