McIntosh MXA60 Service Manual

McIntosh MXA60 Service Manual

Integrated audio system
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Performance Specifications ..........................................2
Notes ...........................................................................2
Rear Panel ...................................................................3
Section Location ..........................................................4
Safety Information .......................................................5
Block Diagram .......................................................7 - 8
Interconnection Diagram ......................................9 - 10
Backup PS Schematic and PCB .......................... 11 - 14
Main Schematic and PCB ...................................15 - 24
SERVICE MANUAL
MXA60
INTEGRATED
AUDIO SYSTEM
SERIAL NO. ZR1367 And Above
CONTENTS
INTEGRATED AUDIO SYSTEM
ACK1001 And Above
Source Schematic and PCB .................................25 - 30
Tuner Schematic and PCB ...................................31 - 34
Preamplifier Schematic and PCB ........................35 - 38
Control Schematic and PCB ................................39 - 42
Display Schematic and PCB................................43 - 46
Meter Light Schematic and PCB ..........................47 - 50
Loudspeaker .......................................................51 - 52
Parts List .............................................................55 - 64
Repacking Instructions ...............................................65
MXA60

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Summary of Contents for McIntosh MXA60

  • Page 1: Table Of Contents

    MXA60 MXA60 INTEGRATED AUDIO SYSTEM INTEGRATED AUDIO SYSTEM SERIAL NO. ZR1367 And Above ACK1001 And Above CONTENTS Performance Specifications ..........2 Source Schematic and PCB .........25 - 30 Notes ................2 Tuner Schematic and PCB ........31 - 34 Rear Panel ..............3 Preamplifier Schematic and PCB ......35 - 38 Section Location ............4...
  • Page 2: Performance Specifications

    240V ~ 50/60Hz at 1.3 Amps 1.5uV (14.8dBf) Standby: Less than 0.5 watt Signal To Noise Ratio Note: Refer to the rear panel of the MXA60 for the correct voltage. Mono: 70dB Stereo: 68dB System Overall Dimensions Frequency Response Width is 22 inches (55.88cm) ±1dB 20 to 15,000Hz...
  • Page 3: Notes

    Use only replacement parts recom mended by the manufacturer. 3. Unless otherwise specified: a. Resistor values are in ohms. 6. Use McIntosh Remote Control Model HR60. b. Capacitor values are microfarads (uF). c. Inductor values are in microhenries (uH).
  • Page 4: Section Location

    SECTION LOCATIONS...
  • Page 5: Safety Information

    Owners Manual may result in Hazardous Radiation Exposure. Servicing of laser mechanism is to be performed at the service facility at McIntosh Laboratory Inc. This product incorporates an embedded Class 3R Laser (IEC60825-1). LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT...
  • Page 6 NOTES...
  • Page 7: Block Diagram

    MXA60 INTEGRATED AUDIO SYSTEM BLOCK DIAGRAM...
  • Page 8 INTERCONNECT 110V 120V 100V 230V 240V 220V BACKUP BACKUP (UNDERSIDE) +7.5V +7.5V -7.5V -7.5V CA15 -12V -12V +26V GRN LTS CA18 +7.5V +26V +7.5V +3.3VCD L OUTPUT +26V CA17 -7.5V -7.5V +FCD -FCD Line Voltage Conversions -12V -12V +26V Voltage +26V MAIN 100V...
  • Page 9 MXA60 MXA60 INTEGRATED AUDIO SYSTEM INTEGRATED AUDIO SYSTEM 2 BACKUP POWER SUPPLY 2 BACKUP POWER SUPPLY 751007 SCH 751007 SCH +VBU +VBU AC FUSE AC FUSE 0.3A 0.3A Line Voltage Conversions Voltage T4AL 250V SB 100V PRIMARY PRIMARY T3.15AL 250V SB...
  • Page 10 2 BACKUP POWER SUPPLY 751007 PCB 130067 RoHS...
  • Page 11 MXA60 INTEGRATED AUDIO SYSTEM 3 MAIN 751008 SCH 1 of 4 R7 2 R9 7 +50V 4.75k 47 .5 W +7VL U1 1:1 L AM P J11:1 L AMP + VOLTAGE AM P -7VL J11:2 R6 4 C4 9 100pF +1.8V...
  • Page 12 3 MAIN 751008 SCH 2 of 4 L M ETER DRIVER +7VM +7VM U15:2 L METER LOG AMP R165 150K +7VM R163 -5VM L OUT 22.1K R167 R169 R171 R173 U15:1 56.2K 8.25K 8.25K 221K -5VM R181 +7.5V +7VM 47 .5 W R METER DRIVER J5:15 L METER...
  • Page 13 MXA60 INTEGRATED AUDIO SYSTEM 3 MAIN 751008 SCH 3 of 4 +50V -50V AM P CD MICRO CD MECHANISM CD MECHANISM J2:2 CD VFD TUBE PLATE +26V CD VFD 22.1 +5VCD +3.3VCD J7:1 +3.3VCD 26.6V +3.3VCD J7:10 J2:1 100K 332K...
  • Page 14 3 MAIN 751008 SCH 4 of 4 R128 4.75k U13:2 R AM P J14:1 R AMP +50V + VOLTAGE R120 J14:2 100pF +1.8V +7VR R117 +7VR R185 U13:1 + CURRENT 2.21M LIMITER +1.2V + DRIVER + DIFFERENTIAL -7VR - BIAS ADJUSTM ENT - ADJUST R152 FOR 19-23 mV DC PG ATTENUATOR...
  • Page 15 MXA60 INTEGRATED AUDIO SYSTEM 3 MAIN 751008 PCB...
  • Page 16 4 SOURCE 751009 SCH 1 of 2 +3.3VCD PLAY MUTE .001uF MUTE J9 :2 3 1.5K CD MUTE SPDIF J9 :2 5 47.5K SACD 330pF 1.5K 1.8 2K 1.8 2K U8:1 MODE J9 :2 2 SACD DSDL/PDL J9 :2 0 22.1 U10:2 DSDR/PDR...
  • Page 17 MXA60 INTEGRATED AUDIO SYSTEM 4 SOURCE 751009 SCH 2 of 2 SPI CL J1:1 SPI CL SPI DA R PRE J1:2 J6:1 SPI DA VOL CS L PRE J1:3 J6:7 VOL CS L TUN TUN RXD J1:4 J6:2 TUN RXD...
  • Page 18 4 SOURCE 751009 PCB...
  • Page 19 MXA60 INTEGRATED AUDIO SYSTEM 6 TUNER 751010 SCH J3:3 AM ANTENNA 3.3uH J3:9 .01uF J3:10 AMRFIN AMSELOUT2 .22uF .01uF .01uF .01uF AMRFDEC AMSELOUT1 FMIN2 AMIFAG C1 560uH FMIN1 AMSELIN2 J3:6 560uH L8 GNDRF AMSELIN1 3.3uH VCC2 TEST .01uF .01uF AMRFAGC...
  • Page 20 6 TUNER 751010 PCB...
  • Page 21 MXA60 INTEGRATED AUDIO SYSTEM 7 PREAMPLIFIER 751011 SCH +26V 1.8k 8.25K L PREAMP L AMP BUFFER BUFFER +7.5V V1:1 L PRE J1:7 +7.5V L AMP J6:7 L AMP U5:1 .1uF .1uF .1uF R PRE J1:1 U3:1 J6:5 .22uF -7.5V J1:2 J6:4 -7.5V...
  • Page 22 7 PREAMPLIFIER 751011 PCB...
  • Page 23 MXA60 INTEGRATED AUDIO SYSTEM 8 CONTROL 751012 SCH RELAY DRIVERS / CD ENA CTRL/LIGHT DRIVERS SPI CL J6:1 SPI CL SPI DA J4:11 J6:2 +3.3V +3.3V +3.3V +3.3V +3.3V SPI DA J4:13 AMP ENA J4:6 PRE OUT J6:3 VOL CS +3.3V...
  • Page 24 8 CONTROL 751012 PCB 130065...
  • Page 25 MXA60 INTEGRATED AUDIO SYSTEM DISPLAY 751013 SCH INPUT TUNE 5VFD CL J1:6 TUN B J5:6 5VFD CL J1:3 5VFD CS TUN A J1:7 J5:4 5VFD CS J1:1 5VFD DA SET PB J1:8 J5:3 5VFD DA J1:2 100uH +5VFD J1:9 +5VFD...
  • Page 26 DISPLAY 751013 PCB...
  • Page 27 MXA60 INTEGRATED AUDIO SYSTEM 11 METER LIGHT 751014 SCH L MET CAL L METER J1:2 R MET CAL L INTENSITY L MET CAL J1:1 L COLOR R MET CAL J1:12 R METER J1:11 J1:5 J1:13 USB - J1:6 PG LED DRIVERS...
  • Page 28 11 METER LIGHT 751014 PCB...
  • Page 29: Loudspeaker

    MXA60 INTEGRATED AUDIO SYSTEM LOUDSPEAKER 320364 SCH W [+] 1.2mH W [-] IN [-] T [+] .15mH IN [+] T [-] 6 5W 10uF 1.85A...
  • Page 30 NOTES...
  • Page 31: Parts Lists

    124123 CAP MONO .1UF 50V + _ 20% X7R SMD 061365 METER MXA60 124123 CAP MONO .1UF 50V + _ 20% X7R SMD 061365 POWER TRANSFORMER POT MXA60 750967 TUBE 12AX7A MCINTOSH 165065 CAP ELECT 470UF 16V 066508 ACCESSORIES CAP ELECT 470UF 16V...
  • Page 32: Parts List

    PARTS LIST (Cont’d.) MAIN PCB 751008 (Cont’d.) Ref No. Description Part No. Ref No. Description Part No. DIODE RECT SCHOTTKEY 2A 40V 070196 CAP .47UF 50V 20% NPO SMD0805 061373 CAP MONO 1PF 50V NPO 061362 DIODE RECT SCHOTTKEY 2A 40V 070196 CAP ELECT 22UF 100V 066574...
  • Page 33 MXA60 INTEGRATED AUDIO SYSTEM PARTS LIST (Cont’d.) MAIN PCB 751008 (Cont’d.) Ref No. Description Part No. Ref No. Description Part No. TRANSISTOR NPN A05 SMD 132333 TRANSISTOR NPN A05 SMD 132333 TRANSISTOR NPN A05 SMD 132333 TRANSISTOR PNP 300V 2SA1689...
  • Page 34 PARTS LIST (Cont’d.) MAIN PCB 751008 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. R100 RES MET OX 680 OHM 5% 1/2W 137099 RES SMD0805 475 1/8W 1% 145020 R101 RES MET OX 680 OHM 5% 1/2W 137099 RES SMD0805 332 1/8W 1% 145006...
  • Page 35 MXA60 INTEGRATED AUDIO SYSTEM PARTS LIST (Cont’d.) MAIN PCB 751008 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. CAP ELECT 10UF 50V 066445 R159 RES SMD0805 1K 1/8W 1% 145007 CAP ELECT 10UF 50V 066445 R160 RES MO 4.7 OHM 5% 1W...
  • Page 36 PARTS LIST (Cont’d.) SOURCE PCB 751009 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. CAP MPF 0.0022UF 5% 63VDC 064454 RES SMD0805 10K 1/8W 1% 145010 RES SMD0805 221K 1/8W 1% 145038 CAP MPF 0.0022UF 5% 63VDC 064454 CAP MPF 0.0022UF 5% 63VDC 064454...
  • Page 37 CAP SMD0603 .1uF 10% 50V X7R 061385 IC SINGLE 2 INPUT AND GATE SMD 133552 CAP SMD0603 .1uF 10% 50V X7R 061385 IC MICRO PROGRAMMED CD MXA60 133749 IC SINGLE 2 INPUT NOR GATE SMD 133651 DIODE SMALL SIGNAL 4148 SMD 070199...
  • Page 38 PARTS LIST (Cont’d.) TUNER PCB 751010 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. CONN 13 PIN FFC RA SMD 117996 POT 1/4” HORIZ 100K .5W SMD 134515 CONN 13 PIN FFC RA SMD 117996 RES SMD0805 1.5K 1/8W 1% 145022 CONN 13 PIN FFC RA SMD 117996...
  • Page 39 MXA60 INTEGRATED AUDIO SYSTEM PARTS LIST (Cont’d.) PREAMP PCB 751011 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. RES SMD0805 22.1K 1/8W 1% 145012 RES SMD0805 4.75K 1/8W 1% 145008 RES SMD0805 100K 1/8W 1% 145014 RES SMD0805 1.5K 1/8W 1% 145022 RES SMD0805 4.75K 1/8W 1%...
  • Page 40 PARTS LIST (Cont’d.) DISPLAY PCB 751013 Ref. No. Description Part No. Ref. No. Description Part No. CAP ELECT 1000UF 25V 066513 RES SMD0805 1K 1/8W 1% 145007 CAP ELECT 47UF 35V 066446 RES SMD0805 1K 1/8W 1% 145007 RES SMD0805 150 1/8W 1% 145019 CAP ELECT 47UF 35V 066446...
  • Page 41: Repacking Instructions

    If a shipping carton or any of the interior part(s) are needed, please 310411SP Loudspeaker Inner Carton call or write Customer Service Department of McIntosh 310409SP Loudspeaker Top Foam Laboratory. Please see the Part List for the correct numbers.
  • Page 42 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.

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