McIntosh XL1001 Service Manual
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McIntosh XL1001 Service Manual

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Performance Specifications ........................................ 2
Notes ......................................................................... 2
Rear Panel .................................................................. 3
Section Location ........................................................ 3
Block Diagram ........................................................... 4
Interconnection Diagram ...................................... 5 - 6
Main Left Schematic and PCB ............................ 7 - 18
Main Right Schematic and PCB ........................ 19 - 30
Phono ............................................................... 31 - 32
C1000
TUBE PREAMPLIFIER
SERIAL NO. XL1001 And Above
CONTENTS
SERVICE MANUAL
Serial Number XL1001 And Above
Balanced I/O Left Schematic and PCB .............. 33 - 34
Balanced I/O Right Schematic and PCB ............ 35 - 36
Balanced Switching Left Schematic and PCB .... 37 - 38
Balanced Switching Right Schematic and PCB .. 39 - 40
Meter Schematic and PCB ................................. 41 - 42
Headphone Schematic and PCB ....................... 43 - 44
Parts List ............................................................ 47 - 56
Repacking Instructions ............................................. 57
C1000
TUBE PREAMPLIFIER

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Summary of Contents for McIntosh XL1001

  • Page 1: Table Of Contents

    C1000 TUBE PREAMPLIFIER C1000 TUBE PREAMPLIFIER SERIAL NO. XL1001 And Above CONTENTS Performance Specifications ........2 Balanced I/O Left Schematic and PCB ....33 - 34 Notes ................. 2 Balanced I/O Right Schematic and PCB .... 35 - 36 Rear Panel ..............3 Balanced Switching Left Schematic and PCB ..

  • Page 2: Performance Specifications

    Use only replacement parts recom- high impedance (10 megaohm) voltmeter must be used. mended by the manufacturer. 3. Unless otherwise specified: 6. Use McIntosh Remote Control Model HR061 with the a. Resistor values are in ohms. C1000. b. Capacitor values are microfarads (uF).

  • Page 3: Rear Panel

    C1000 TUBE PREAMPLIFIER REAR PANEL SECTION LOCATIONS TOP VIEW WITH COVER REMOVED...

  • Page 4: Block Diagram

    BLOCK DIAGRAM...
  • Page 5 C1000 TUBE PREAMPLIFIER INTERCONNECT...
  • Page 6 2A MAIN LEFT 750109 SCH 1 OF 5...
  • Page 7 C1000 TUBE PREAMPLIFIER MAIN LEFT 750109 SCH 2 OF 5...
  • Page 8 MAIN LEFT 750109 SCH 3 OF 5...
  • Page 9 C1000 TUBE PREAMPLIFIER MAIN LEFT 750109 SCH 4 OF 5...
  • Page 10 MAIN LEFT 750109 SCH 5 OF 5...
  • Page 11 C1000 TUBE PREAMPLIFIER MAIN LEFT 750109 PCB...
  • Page 12 3A MAIN RIGHT 750111 SCH 1 OF 5...
  • Page 13 C1000 TUBE PREAMPLIFIER MAIN RIGHT 750111 SCH 2 OF 5...
  • Page 14 MAIN RIGHT 750111 SCH 3 OF 5...
  • Page 15 C1000 TUBE PREAMPLIFIER MAIN RIGHT 750111 SCH 4 OF 5...
  • Page 16 MAIN RIGHT 750111 SCH 5 OF 5...
  • Page 17 C1000 TUBE PREAMPLIFIER 3 MAIN RIGHT 750111 PCB...

  • Page 18: Phono

    4 PHONO 750110 SCH and PCB...
  • Page 19 C1000 TUBE PREAMPLIFIER 5 BALANCED I/O LEFT 750198 SCH and PCB...
  • Page 20 6 BALANCED I/O RIGHT 750199 SCH and PCB...
  • Page 21 C1000 TUBE PREAMPLIFIER 7 BALANCED SWITCHING LEFT 750108 SCH and PCB...
  • Page 22 8 BALANCED SWITCHING RIGHT 750155 SCH and PCB...
  • Page 23 C1000 TUBE PREAMPLIFIER 9 METER 750106 SCH and PCB METER CALIBRATION PROCEDURE Apply a 1kHz signal to both channels. Adjust the level for 2.5VAC at L and R SPKR1 unbalanced output. Adjust R13 for 0dB on the C1000 left and right meters...
  • Page 24 10 HEADPHONE 750262 SCH and PCB...

  • Page 25: Parts List

    C1000 TUBE PREAMPLIFIER PARTS LIST Ref. No. Description Part No. CAP MONO 100PF 100V 10% NPO 061341 CAP ELECT 10UF 100VDC 066462 INTERCONNECT CAP MONO .1UF 50V 20% Z5U 061346 Ref. No. Description Part No. METER 124097 CAP MONO .1UF 50V 20% Z5U 061346 METER 124097...
  • Page 26 PARTS LIST Cont’d Ref. No. Description Part No. RELAY REED FORM 1A 5V 500 OHMS 087050 MAIN LEFT PCB 750109 (Cont’d) RELAY REED FORM 1A 5V 500 OHMS 087050 Ref. No. Description Part No. RELAY REED FORM 1A 5V 500 OHMS 087050 C162 CAP MONO .1UF 50V 20% Z5U...
  • Page 27 C1000 TUBE PREAMPLIFIER PARTS LIST Cont’d Ref. No. Description Part No. R128 RES MF 221K 1% 1/4W 144629 MAIN LEFT PCB 750109 (Cont’d) R129 RES MF 2.21M 1% 1/4W 144576 Ref. No. Description Part No. R130 RES MF 2.21M 1% 1/4W 144576 RES MF 47.5K 1% 1/4W 144526...
  • Page 28 133565 CAP ELECT 10UF 100VDC 066462 IC OPERATIONAL AMP LOW NOISE 133565 CAP MONO .1UF 50V 20% Z5U 061346 TUBE 12AX7A MCINTOSH 165065 CAP MONO .1UF 50V 20% Z5U 061346 (V3) SOCKET 9 PIN TUBE CERAMIC 178170 CAP MONO 100PF 100V 10% NPO...
  • Page 29 C1000 TUBE PREAMPLIFIER PARTS LIST Cont’d Ref. No. Description Part No. LED GREEN 3MM HI INTENSITY 058172 MAIN RIGHT PCB 750111 (Cont’d) LED GREEN 3MM HI INTENSITY 058172 Ref. No. Description Part No. BRACKET PCB CARD MOUNTING 003611 C100 CAP ELECT 10UF 100VDC 066462 BRACKET PCB CARD MOUNTING 003611...
  • Page 30 PARTS LIST Cont’d Ref. No. Description Part No. RES MF 1K 1% 1/4W 144513 MAIN RIGHT PCB 750111 (Cont’d) RES MF 2.21K 1% 1/4W 144584 Ref. No. Description Part No. RES MF 2.21 OHM 1% 1/4W 144607 TRANSISTOR NPN SILICON 132317 RES MF 2.21 OHM 1% 1/4W 144607...
  • Page 31 133565 R183 RES MF 475K 1% 1/4W 144604 IC STEREO DGTL VOLUME CONTROL 133637 R186 RES MF 1.91K .5% 1/4W 144613 TUBE 12AX7A MCINTOSH 165065 R187 RES MF 1.91K .5% 1/4W 144613 (V3) SOCKET 9 PIN TUBE CERAMIC 178170 R190 RES MF 2.21 OHM 1% 1/4W...
  • Page 32 IC OPERATIONAL AMP LOW NOISE 133565 CAP ELECT 10UF 50V 066445 IC OPERATIONAL AMP LOW NOISE 133565 CAP ELECT 470UF 16V 066508 TUBE 12AX7A MCINTOSH 165065 (V1) SOCKET 9 PIN TUBE CERAMIC 178170 CAP MONO 220PF 200V 10% NPO 061342 TUBE 12AX7A MCINTOSH...
  • Page 33 C1000 TUBE PREAMPLIFIER PARTS LIST Cont’d Ref. No. Description Part No. RES MF 267K 1% 1/4W 144532 BALANCE I/O LEFT PCB 750198 (Cont’d) RES MF 267K 1% 1/4W 144532 Ref. No. Description Part No. RES MF 267K 1% 1/4W 144532 RES MF 47.5 OHM 1% 1/4W 144642 RES MF 22.1K 1% 1/4W...
  • Page 34 PARTS LIST Cont’d Ref. No. Description Part No. CAP MONO 22PF 200V 10% NPO 061339 BALANCE SWITCHING LEFT PCB 750108 (Cont’d) CAP ELECT 47UF 35V 066446 Ref. No. Description Part No. CAP MONO .1UF 50V 20% Z5U 061346 IC OPERATIONAL AMP LOW NOISE 133565 CAP MONO .1UF 50V 20% Z5U 061346...
  • Page 35 C1000 TUBE PREAMPLIFIER PARTS LIST Cont’d Ref. No. Description Part No. TRANSISTOR NPN SILICON 132317 BALANCE SWITCHING RIGHT PCB 750155 (Cont’d) TRANSISTOR NPN SILICON 132317 Ref. No. Description Part No. TRANSISTOR NPN SILICON 132317 TRANSISTOR NPN SILICON 132317 RES MF 267K 1% 1/4W 144532 RES MF 267K 1% 1/4W 144532...

  • Page 37: Repacking Instructions

    C1000 TUBE PREAMPLIFIER REPACKING INSTRUCTIONS...
  • Page 38 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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C1000

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