McIntosh MX120 Service Manual

McIntosh MX120 Service Manual

A/v control center
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Performance Specifications ................................... 2 - 3
Notes ......................................................................... 3
Rear Panel .................................................................. 3
Section Location ........................................................ 4
Block Diagram ...................................................... 5 - 8
Interconnection Diagram .................................... 9 - 10
Display Schematic and PCB ............................... 11 - 18
Surround Schematic and PCB ............................ 19 - 32
Data Schematic and PCB ................................... 33 - 36
MX120
A/V CONTROL CENTER
SERIAL NO. XN1001 And Above
CONTENTS

SERVICE MANUAL

Serial Number XN1001 And Above
S-Video Schematic and PCB .............................. 37 - 40
Video Schematic and PCB ................................. 41 - 44
Input Schematic and PCB .................................. 45 - 50
Component Video Schematic and PCB ............. 51 - 54
HDMI Power Supply Schematic and PCB .......... 55 - 56
HDMI Module Schematic and PCB ................... 57 - 58
Balanced Output Schematic and PCB ............... 59 - 60
Parts List ............................................................ 61 - 74
Repacking Instruction .............................................. 75
MX120

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Summary of Contents for McIntosh MX120

  • Page 1: Table Of Contents

    MX120 MX120 A/V CONTROL CENTER SERIAL NO. XN1001 And Above CONTENTS Performance Specifications ........2 - 3 S-Video Schematic and PCB ......37 - 40 Notes ................. 3 Video Schematic and PCB ......... 41 - 44 Rear Panel ..............3 Input Schematic and PCB ........
  • Page 2: Performance Specifications

    2.5V Unbalanced Outputs (Main) 230 Volts, 50/60Hz at 65 watts 5.0V Balanced Outputs (Main) 240 Volts, 50/60Hz at 65 watts Note: Refer to the rear panel of the MX120 for the Maximum Voltage Output correct voltage. 9.5V Unbalanced 19V Balanced Overall Dimensions Width is 17-1/2 inches (44.45cm)
  • Page 3: Rear Panel

    MX120 REAR PANEL SECTION LOCATION...
  • Page 4 NOTES...
  • Page 5: Block Diagram

    MX120 BLOCK DIAGRAM...
  • Page 6: Block Diagram

    BLOCK DIAGRAM con’t...
  • Page 7 MX120 INTERCONNECT...
  • Page 8 DISPLAY CONTROL SECTION SCH 750575...
  • Page 9 MX120 DISPLAY LED SECTION SCH 750577...
  • Page 10 DISPLAY KEYBOARD SECTION SCH 750568 DISPLAY CONTROL SECTION PCB 750575...
  • Page 11 MX120 DISPLAY LED SECTION PCB 750577 DISPLAY KEYBOARD SECTION PCB 750568...
  • Page 12 SURROUND 750570 SCH 1 OF 6...
  • Page 13 MX120 SURROUND 750570 SCH 2 OF 6...
  • Page 14 3 SURROUND 750570 SCH 3 OF 6...
  • Page 15 MX120 SURROUND 750570 SCH 4 OF 6...
  • Page 16 SURROUND 750570 SCH 5 OF 6...
  • Page 17 MX120 SURROUND 750570 SCH 6 OF 6...
  • Page 18 SURROUND 750570 PCB...
  • Page 19 MX120 DATA 750572 SCH 1 OF 2...
  • Page 20 DATA 750572 SH 2 OF 2 And PCB...
  • Page 21 MX120 S-VIDEO 750574 SCH 1 OF 2...
  • Page 22 5 S-VIDEO 750574 SH 2 OF 2 And PCB...
  • Page 23 MX120 VIDEO 750573 SCH...
  • Page 24 VIDEO 750573 PCB...
  • Page 25 MX120 INPUT 750571 SCH 1 OF 2...
  • Page 26 INPUT 750571 SCH 2 OF 2...
  • Page 27 MX120 INPUT 750571 PCB...
  • Page 28 COMPONENT VIDEO 750576...
  • Page 29 MX120 COMPONENT VIDEO 750576...
  • Page 30 HDMI POWER SUPPLY 750599...
  • Page 31 MX120 HDMI MODULE 750623...
  • Page 32 BALANCED OUTPUT 750608...
  • Page 33: Parts List

    RES MF 47.5K 1% 1/4W 144526 IC13 IC OCT 3-STT NONINVERTING 133654 TEST1 CONN 4 PIN 117215 IC14 IC PROGRAMMED MX120 133665 133664 IC PROGRAMMED 133336 IR MICRO 133545 (IC14) SOCKET IC 32 PIN 178165 (U3) SOCKET IC 20 PIN...
  • Page 34 PARTS LIST Con’t DISPLAY PCB 750575 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. MOLD1 MOLD FUNCTION LED 017865 CRYSTAL 11.0592MHZ 180051 MOLD3 MOLD LED INDICATOR 017866 CUTLIST 184121 MOLD4 MOLD FUNCTION LED 017865 ASSY INSERTION PCB DISPLAY 702417 MOLD5 MOLD FUNCTION LED...
  • Page 35 MX120 PARTS LIST Con’t SURROUND PCB 750570 Ref. No. Description Part No. Ref. No. Description Part No. BRKT1 BRACKET PCB CARD MOUNTING 003611 CAP ELECT 10UF 16V 066580 CAP ELECT 10UF 16V 066580 CAP ELECT 220UF 50V 20% 066254 CAP ELECT 10UF 16V...
  • Page 36 PARTS LIST Con’t SURROUND PCB 750570 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. C286 CAP MONO .1UF 50V 20% Z5U 061346 C158 CAP MONO 22PF 200V 10% NPO 061339 C287 CAP MONO .1UF 50V 20% Z5U 061346 C159 CAP MONO 22PF 200V 10% NPO...
  • Page 37 MX120 PARTS LIST Con’t SURROUND PCB 750570 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. HEATSINK TO-220 080023 IC71 IC SPST QUAD FET SWITCHES N O 133580 (HS1) INSULATOR ISOSTRATE TO 220 084133 IC73 IC QUAD OPERATIONAL AMPLIFIER 133596...
  • Page 38 PARTS LIST Con’t SURROUND PCB 750570 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. RES MF 1.65K 1% 1/4W 144516 SOCKET STRIP .025 SQ 20 PIN 117642 RES MF 10K 1% 1/4W 144504 SOCKET STRIP .025 SQ 20 PIN 117642 RES MF 8.25K 1% 1/4W 144549...
  • Page 39 MX120 PARTS LIST Con’t SURROUND PCB 750570 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. R329 RES NETWORK 2 X 220K ISO 144678 R208 RES MF 100K 1% 1/4W 144528 R330 RES NETWORK 2 X 100 OHM ISO...
  • Page 40 PARTS LIST Con’t SURROUND PCB 750572 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. RES NETWORK 5 X 100 ISO 144677 CAP ELECT 47UF 35V 066446 RES NETWORK 5 X 100 ISO 144677 CAP MONO .1UF 50V 20% Z5U 061346 RES MF 100K 1% 1/4W 144528...
  • Page 41 MX120 PARTS LIST Con’t S-VIDEO PCB 750574 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. RES FP 10 OHM 5% 1/4W 137105 DIODE SIL 400 PIV @ 1.5A 070031 RES MF 47.5K 1% 1/4W 144526 RIVET 1/8X3/16 STEEL 108011 RES MF 47.5K 1% 1/4W...
  • Page 42 PARTS LIST Con’t VIDEO PCB 750573 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. RES FP 10 OHM 5% 1/4W 137105 CAP ELECT 47UF 16V 066380 RES MF 47.5K 1% 1/4W 144526 CAP ELECT 47UF 16V 066380 RES MF 47.5K 1% 1/4W 144526 CAP ELECT 47UF 16V...
  • Page 43 MX120 PARTS LIST Con’t INPUT PCB 750571 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. CAP ELECT 10UF 16V 066580 IC18 IC SPST QUAD FET SWITCHES N O 133580 CAP MONO 100PF 100V 10% NPO 061341 IC19...
  • Page 44 PARTS LIST Con’t INPUT PCB 750571 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. RES NETWORK 2 X 22K ISO 144689 CAP ELECT 470UF 16V 066508 RES MF 47.5K 1% 1/4W 144526 CAP ELECT 470UF 16V 066508 RES MF 47.5K 1% 1/4W 144526 CAP MONO 390PF 5% 200V...
  • Page 45 MX120 PARTS LIST Con’t COMPONENT VIDEO PCB 750576 (Cont’d.) Ref. No. Description Part No. Ref. No. Description Part No. HEATSINK T0220 080014 RES MF 75 OHM 1% 1/4W 144644 HEATSINK T0220 080014 RES MF 4.75 OHM 1% 1/4W 144658 IC PROG VIDEO CPLD 133660 133661 RES MF 22.1 OHM 1% 1/4W...
  • Page 46 PARTS LIST Con’t HDMI POWER SUPPLY PCB 750599 Ref. No. Description Part No. Ref. No. Description Part No. CAP MPF 0.1UF 100V 064338 CAP ELECT 10UF 50V 066445 CAP ELECT 18000UF 16V 066460 CAP ELECT 10UF 50V 066445 CAP MONO .1UF 50V 20% Z5U 061346 CAP ELECT 10UF 50V 066445...
  • Page 47 MX120 MX120 EXPLODED VIEW (3X) (3X) (3X) (4X) (4X) (4X) (46X) (10X) (9X) (7X) (6X) (6X) (4X) (6X) ASSY REAR PANEL 050171...
  • Page 48 MX120 EXPLODED VIEW and PARTS LIST Ref No. Description Part No.
  • Page 49: Repacking Instruction

    MX120 MX119 REPACKING INSTRUCTION...
  • Page 50: Service Manual

    SERIAL NO. XN1001 And Above 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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