McIntosh MC2152 Service Manual
  1. Manuals
  2. Brands
  3. McIntosh Manuals
  4. Amplifier
  5. MC2152
  6. Service manual

McIntosh MC2152 Service Manual

Hide thumbs Also See for MC2152:

Advertisement

Table of Contents

Performance Specifications ..........................................2
Notes ...........................................................................3
Rear Panel ...................................................................3
Section Location ..........................................................4
Block Diagram .......................................................5 - 6
Interconnection Diagram ........................................7 - 8
Main Schematic and PCB .....................................9 - 20
SERVICE MANUAL
MC2152
POWER AMPLIFIER
ALL SERIAL NUMBERS
CONTENTS
Control/Tube Light Schematic and PCB ...............21 - 26
L & R Input Schematic and PCB ..........................27 - 30
L Terminal Schematic and PCB ...........................31 - 32
R Terminal Schematic and PCB ...........................33 - 34
Parts List .............................................................37 - 42
Repacking Instruction ................................................43
MC2152

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the MC2152 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for McIntosh MC2152

Summary of Contents for McIntosh MC2152

  • Page 1: Table Of Contents

    MC2152 MC2152 POWER AMPLIFIER ALL SERIAL NUMBERS CONTENTS Performance Specifications ..........2 Control/Tube Light Schematic and PCB ....21 - 26 Notes ................3 L & R Input Schematic and PCB ......27 - 30 Rear Panel ..............3 L Terminal Schematic and PCB ......31 - 32 Section Location ............4...

  • Page 2: Performance Specifications

    Frequency Response Standby: Less than 0.3 watts +0, -0.5dB from 20Hz to 20,000Hz +0, -3.0dB from 10Hz to 70,000Hz Note: Refer to the right side panel of the MC2152 for the correct voltage. Input Sensitivity (for rated output) Overall Dimensions 1.7 Volts Unbalanced...

  • Page 3: Rear Panel

    MC2152 REAR PANEL...

  • Page 4: Section Location

    SECTION LOCATIONS Bottom View L INPUT R INPUT R TERMINAL L TERMINAL MAIN TUBE LIGHT CONTROL...

  • Page 5: Block Diagram

    MC2152 BLOCK DIAGRAM BACKUP BACKUP AC POWER MAIN FUSE POWER POWER TRANSFORMER SUPPLY MAIN INRUSH MAIN -250V POWER CURRENT POWER RECTIFIERS -250V RELAY LIMITER TRANSFORMER AND FILTERS 12.6VAC L HIGH VOLTAGE POWER POWER HEATER +700V 6.3VAC RECTIFIERS +700V CONTROL CONTROL...
  • Page 6 INTERCONNECT VOLTAGE BLK/GRY WHT/VIO JMP1 LOCATION MAIN FUSE (F1) 100V T10AL 250V 110V T8AL 250V 120V T8AL 250V 127V T8AL 250V 220V T5AL 250V 230V T5AL 250V 240V T5AL 250V R INPUT R TERMINAL JMP1 LOCATION WHT/BRN GRN/YEL CONTROL TUBE BLK/GRY LIGHT WHT/BRN...
  • Page 7 MC2152 MAIN 752363 SCH 1 of 5 R PLT + 12.6VAC R KT 88 V7 R:1 6.3VAC 220 5W R167 R O UTPUT TRANSFORMER 1.8k R155 KT 88 V5 R:1 J2 9:1 VI O R GRD + 220 5W 1.8k...
  • Page 8 MAIN 752363 SCH 2 of 5 L PLT + 12.6VAC L V7 L:2 KT 88 R148 220 5W 6.3VAC V8 L:2 V7 L:1 KT 88 KT 88 PGND L OUT PUT TRANSFO RMER R136 1.8k R146 220 5W R144 VI O J2 7:1 1.8k L GRD +...
  • Page 9 MC2152 MAIN 752363 SCH 3 of 5 R119 200V +700V L PLT + 100µF +350VL 1µF L COM J24:5 200V L COM R127 100k J24:7 .047µF 100k V4L:1 12AT7 R100 2.21k 47pF L UNB J24:6 100k L UNB R109 .047µF...
  • Page 10 MAIN 752363 SCH 4 of 5 J1:1 +12V VO UT J1:4 350mA 20.0k 100V 110V .1µF 120V J1:7 1000µF .1µF .1µF 220µF PRIMARY J1:10 4.75k +700V T PTC .1µF J2:1 +12.6V J2:4 TRANSFORMER THERMAL 220V PROTECTION +500V 230V 22µF 2.2k 240V J2:7 J2:10...
  • Page 11 MC2152 MAIN 752363 SCH 5 of 5 4.75k MAIN RELAY DRIVER J23:5 J23:6 J23:7 J23:8 J23:18 PWR ON PWR ON J23:17 FAULT FAULT AC DET J23:16 4.75k J23:15 L SENTRY L SENTRY L SM SENTRY MONITOR DETECTOR J23:13 R SENTRY...
  • Page 12 MAIN 752363 PCB...
  • Page 13 MC2152 CONTROL/TUBE LIGHT 752208 SCH1 J2:17 J2:8 L RED L RED J2:4 R RED R RED ORN 1 J2:13 ORN 1 ORN 2 V c c J2:9 ORN 2 GN D ORN 3 J2:5 ORN 3 ORN 4 J2:1 ORN 4...
  • Page 14 CONTROL/TUBE LIGHT 752208 SCH2 LEFT RIGHT 12AT7 12AX7A 12AX7A 12AT7 12AT7 12AT7 12AX7A 12AX7A McIntosh McIntosh McIntosh McIntosh McIntosh McIntosh McIntosh McIntosh DS1 :1 DS1 :2 DS1 :3 DS2 :1 DS2 :2 DS2 :3 DS3 :1 DS3 :2 DS3 :3...
  • Page 15 MC2152 CONTROL/TUBE LIGHT 752208 PCB...
  • Page 16 L INPUT/R INPUT 752209 SCH 4.7µF 4.7µF 4.7µF 4.7µF L B A L R BAL 20.0k 20.0k 13.0k 13.0k 4-40 4-40 1000pF 1000pF 1000pF 1000pF 1µF 1µF L UNBA L R UNB A L 100k 221k 221k 100k L COM R COM J1:12 J6:5...
  • Page 17 MC2152 L INPUT/R INPUT 752209 PCB...
  • Page 18 L TERMINAL 752249 SCH and PCB J1:1 8Ω .15µF J1:2 4Ω 4 5W J1:3 2Ω 4 5W .65µH .65µH J1:4...
  • Page 19 MC2152 R TERMINAL 752250 SCH and PCB J2:1 8Ω .15µF J2:2 4Ω J2:3 2Ω 4 5W 4 5W .65µH .65µH J2:4...
  • Page 20 NOTES...

  • Page 21: Parts List

    MC2152 PARTS LIST INTERCONNECT Ref. No. Description Part No. Ref. No. Description Part No. MCINTOSH BINDING POST 084226 CAP ELECT 6800UF 25V 20% 066622 MCINTOSH BINDING POST 084226 CAP ELECT 22UF 450V 066630 MCINTOSH BINDING POST 084226 CAP ELECT 22UF 450V...
  • Page 22 PARTS LIST (Cont’d.) MAIN PCB 752363 Ref. No. Description Part No. Ref. No. Description Part No. CAP POLYPROP 0.22UF 20% 1KVDC 064432 BLADE FASTON W/FEET 117708 CAP POLYPROP 0.22UF 20% 1KVDC 064432 BLADE FASTON W/FEET 117708 BLADE FASTON W/FEET 117708 CAPACITOR 2200PF 250VAC 10% 061375 CAP 10uF 20% 16V X5R SMD0805...
  • Page 23 MC2152 PARTS LIST (Cont’d.) MAIN PCB 752363 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. RES FP 100 OHM 5% 1/4W 137107 RES MET OX 30K 5% 2W 144602 RES MO 100K 2W 5% 144698 RES FP 100 OHM 5% 1/4W...
  • Page 24 PARTS LIST (Cont’d.) MAIN PCB 752363 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. R122 RES MET OX 30K 5% 2W 144602 IC SINGLE NAND SCHMITT SMD 133724 R123 RES MF 15K 1% 1/4W 144623 IC SINGLE NAND SCHMITT SMD 133724 R124 RES MF 15K 1% 1/4W...
  • Page 25 MC2152 PARTS LIST (Cont’d.) CONTROL/TUBE LIGHT PCB 752208 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. DIODE SMALL SIGNAL 4148 SMD 070199 RES SMD0805 10M 1/8W 1% 145044 DIODE SMALL SIGNAL 4148 SMD 070199 RES SMD0805 2.21M 1/8W 1%...
  • Page 26 PARTS LIST (Cont’d.) CONTROL/TUBE LIGHT PCB 752208 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. IC SINGLE NAND SCHMITT SMD 133724 JACK SINGLE RCA 118135 JACK HEADPHONE DUAL BLACK 1/8” 117825 IC TIMER LM555 SMD 133793 IC SINGLE NAND SCHMITT SMD 133724 PCB1 PCB INPUT...

  • Page 27: Repacking Instruction

    034602 Foam End Cap Bottom To protect the tubes during shipment, the Foam 034609 Foam Ring Insert removed from the MC2152 needs to be re- 041893 Warning Sheet inserted. Follow the unpacking instructions in the reverse order. 400159...
  • Page 28 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.

Table of Contents