McIntosh MTI100 Service Manual
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McIntosh MTI100 Service Manual

McIntosh MTI100 Service Manual

Integrated turntable
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Table of Contents

Performance Specifications ......................................... 2
Rear Panel .................................................................. 3
Section Location ......................................................... 4
Block Diagram ....................................................... 5 - 6
Interconnection Diagram ....................................... 7 - 8
SERVICE MANUAL
MTI100
INTEGRATED TURNTABLE
SERIAL NO. AGX1001 And Above
CONTENTS
AHE1001 And Above
Power Supply Schematic and PCB ......................... 9 - 16
Audio Schematic and PCB ................................... 17 - 34
Notes................................................................... 35 - 36
Parts List .............................................................. 37 - 44
Repacking Instruction ................................................. 45
MTI100

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  • Page 1: Table Of Contents

    MTI100 MTI100 INTEGRATED TURNTABLE SERIAL NO. AGX1001 And Above AHE1001 And Above CONTENTS Performance Specifications ......... 2 Power Supply Schematic and PCB ......9 - 16 Rear Panel ..............3 Audio Schematic and PCB ........17 - 34 Section Location ............4 Notes..............

  • Page 2: Performance Specifications

    Frequency Response Amplifier IN Power Requirements 12Hz-30kHz Intermodulation Distortion Refer to the rear panel of the MTI100 Output Voltage/Channel 0.1% maximum if instantaneous peak for the correct voltage. The MTI100 is fac- 4mV @ 1kHz power output does not exceed the rated...

  • Page 3: Rear Panel

    Parts marked with the symbol have critical a. Resistor values are in ohms. characteristics. Use only replacement parts recom- b. Capacitor values are microfarads (uF). mended by the manufacturer. c. Inductor values are in microhenries (uH) 5. Use McIntosh Remote Control Model HR091.

  • Page 4: Section Location

    SECTION LOCATIONS Top View TONE ARM MOTOR PLATTER VOLUME PUSH STANDBY/ON MUTE INPUT PUSH PH: MOTOR BT: PAIR M T I 1 0 0 I N T E G R A T E D T U R N T A B L E COAX FRONT Bottom View...

  • Page 5: Block Diagram

    MTI100 BLOCK DIAGRAM AUDIO INPUT/OUTPUT POWER AMP ANALOG OUTPUT HEADPHONE MUTING CLASS D AMP L DIFF POWER ELECTRONIC TUBE OUTPUT BUFFER VOLUME OUTPUT 1 PRE AMP MUTING LEFT CONTROL OUTPUT – – RIAA PHONO MM NOTE: FOR S/N PREFIX AGX AND AHE...
  • Page 6 INTERCONNECT BOTTOM VIEW CABLE 173344 BT ANT 2 RIGHT LEFT CHASSIS MOT1 TERMINAL PCB 752183 MOTOR AC MAINS RXDB S101 FH101 RXDB DGNDB (Motor 320646) JUMPER DGNDB TXDB 100-120V T3.15AL 250V AMPLIFIER ASSY CABLE 173343 TXDB NTCS 220-240V NO JUMPER T1.6AE 250V 320571 NTCS...
  • Page 7 MTI100 2a 2b 2c 2d (CONTROL, SENSOR/HP, TERMINAL, USB) 752183 SCH 1 of 3 +5 V CC HEADPHONE FR-IR +3 ,3 V BU M H E A D CT R J1 4:1 4.75k +3 ,3 V BU L H E A D...
  • Page 8 2a 2b 2c 2d (CONTROL, SENSOR/HP, TERMINAL, USB) 752183 SCH 2 of 3 100-250V 50/60Hz 089130 T 3,15 AL 220-250V 50/60Hz 089129 T 1,6 AL AC L J1:1 350mA +VBU PRIMARY V IN V OUT +3,3 VBU AC N J1:2 350mA TEST ONLY APPLY 12VDC...
  • Page 9 MTI100 2a 2b 2c 2d (CONTROL, SENSOR/HP, TERMINAL, USB) 752183 SCH 3 of 3 C 39 O PEN G P3 BRIDGE INTERFACE USB-UART 6-3 2 +3 .3V BU S +3 .3V BU S D S7 :3 C 40 OPEN CASE...
  • Page 10 2a 2b 2c 2d (CONTROL, SENSOR/HP, TERMINAL, USB) 752183 PCB...
  • Page 11 MTI100 AUDIO 752184 SCH 1 of 8 R 280 R 281 G P4 +1 5V IN -1 5V IN 6-3 2 C 27 C 28 .1µF .1µF C 33 R 34 10µF U 2:2 C 34 100µF PRE IN L...
  • Page 12 AUDIO 752184 SCH 2 of 8 +1 5V J7 :1 50mA ON/OFF AD J R129 10µF C130 R130 .1µF R131 R253 +5 V CC R161 R160 47.5k 4.75k +3 ,3 V BU M +3 ,3 V BU M +5 V CC H E A D CT RL A MP PRE C173...
  • Page 13 MTI100 AUDIO 752184 SCH 3 of 8 V DD V DD V DD V DD V DD DIGITAL V DD V DD R137 100k V DD V DD V DD V DD 100µH C121 IN CO AX R139 SEL OPT...
  • Page 14 AUDIO 752184 SCH 4 of 8 R 204 +1 5V +1 5H P L EFT H EA D PH O N E AMP +1 5H P +1 5H P R 206 Q 18 -1 5V -1 5H P Q 19 +1 5H P U 33:1 C 169...
  • Page 15 MTI100 AUDIO 752184 SCH 5 of 8 2.21 +15V +15V IN .1µF -15V -15V IN .1µF 2.21 U1:2 R247 10µF WH IT E J8:1 10µF J8:2 BLU E 82.5k 47.5k R276 R277 PRE IN L J8:3 BLACK /N C .022µF...
  • Page 16 AUDIO 752184 SCH 6 of 8 R174 T° J12:6 OUT(TAB) +12V SEC 2 J12:5 R164 R175 J12:4 T° ___ TAB -5V CC ON/OFF R177 18.2k J12:7 ___ TAB +5V DD ON/OFF PS ON R180 47.5k R178 J12:1 ___ TAB +5V CC ON/OFF 1.85A +23V...
  • Page 17 MTI100 AUDIO 752184 SCH 7 of 8 J4 :1 J4 :2 C 39 1000pF 2.21k J4 :3 -15V IN C 69 J4 :4 22µF 3.83k U10:1 C 67 100µF J4 :5 MUT E CTRL J4 :6 +15V IN C 72 100µF...
  • Page 18 AUDIO 752184 SCH 8 of 8 180V -15V IN +15V IN +15V IN L TUBE PREAMPL IFIER U4:1 1µF -15V IN V1:2 U4:2 12AX7A 1µF R228 47.5k 22µF 22µF L V O L O U T L PRE V1:1 12AX7A PRE IN L L V O L IN J9:18...
  • Page 19 MTI100 AUDIO 752184 PCB...
  • Page 20 AMPLIFIER 320571 SCH N O U S E R- S E R V I CE A B L E PA R T S S101 S101 FH01 S101 100-120V JUMPER T3.15AL 250AV 220-240V JUMPER T1.6AE 250V...

  • Page 21: Parts List

    LED RED REV MOUNT SMD 058217 MOT1 MOTOR WITH 60HZ PULLEY ASSY 320646 LED RED REV MOUNT SMD 058217 CONTACT MCINTOSH SERVICE DEPARTMENT LED RED REV MOUNT SMD 058217 POWER SUPPLY PCB 752183 LED RED REV MOUNT SMD 058217 Ref. No. Description Part No.
  • Page 22 PARTS LIST (Cont’d.) POWER SUPPLY PCB 752183 (Cont’d) Ref. No. Description Part No. Ref. No. Description Part No. CONNECTOR 3 PIN HEADER 2MM 118013 RES TF 1K 1% 0.1W SMD0805 145117 HEADER 4 CIRCUIT POST 117772 RES TF 22.1 5% 0.1W SMD0805 145133 RES SMD0805 150 1/8W 1% 145019...
  • Page 23 CAP MONO .1uF 50V +/- 20% X7R SMD 061365 CAP MONO .1uF 50V +/- 20% X7R SMD 061365 FIRMWARE V1.2 MTI100 CONTROL 230282 CAP MONO .1uF 50V +/- 20% X7R SMD 061365 CAP MONO .1uF 50V +/- 20% X7R SMD...
  • Page 24 PARTS LIST (Cont’d.) AUDIO PCB 752184 (Cont’d) Ref. No. Description Part No. Ref. No. Description Part No. C109 CAP MPF 0.0039UF 5% 63VDC 064307 C170 CAP MONO .1uF 50V +/- 20% X7R SMD 061365 C110 CAP MPF 0.0015UF 5% 63VDC 064302 C171 CAP ELECT 10UF 50V SMD...
  • Page 25 MTI100 PARTS LIST (Cont’d.) AUDIO PCB 752184 (Cont’d) Ref. No. Description Part No. Ref. No. Description Part No. DS13 LED RED REV MOUNT SMD 058217 TRANSISTOR NPN 2SC5994 SMD 132341 FUSE 1/8A SLO-BLO 5X20 IEC 089128 TRANSISTOR PNP SMD 132340...
  • Page 26 PARTS LIST (Cont’d.) AUDIO PCB 752184 (Cont’d) Ref. No. Description Part No. Ref. No. Description Part No. RES TF 2.21K 1% 0.1W SMD0805 145126 R116 RES TF 2.21K 1% 0.1W SMD0805 145126 RES SMD0805 22.1K 1/8W 1% 145012 R117 RES TF 100K 1% 0.1W SMD0805 145062 RES SMD0805 4.75K 1/8W 1% 145008...
  • Page 27 MTI100 PARTS LIST (Cont’d.) AUDIO PCB 752184 (Cont’d) Ref. No. Description Part No. Ref. No. Description Part No. R176 RES TF 47.5K 1% .125W SMD0805 145132 R237 RES SMD0805 4.75K 1/8W 1% 145008 R177 RES SMD0805 18.2K 1/8W 1% 145031 R238 RES SMD0805 4.75K 1/8W 1%...
  • Page 28 AUDIO PCB 752184 (Cont’d) Ref. No. Description Part No. Ref. No. Description Part No. IC REG 1.2A LO-DROP ENABLE SMD 133717 PLATTER FELT MAT MTI100 09455400 IC REG 1.2A LO-DROP ENABLE SMD 133717 DRIVE BELT 31062200 IC REG 1.2A LO-DROP ENABLE SMD...

  • Page 29: Repacking Instruction

    MTI100 REPACKING INSTRUCTIONS Quantity Part Number Description When shipping the MTI100, it is highly 03459500 Foam Top/Bottom Pad recommended that the unit be packed as it was 03459600 Foam Accessory Mat originally shipped to avoid damage. Failure to 03459800 Foam Top Turntable properly pack the unit will likely result in damage.
  • Page 30 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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