McIntosh MX135 Manual de usuario

SERVICE MANUAL

Performance Specifications ................................... 2 - 3

Notes ......................................................................... 3

Rear Panel .................................................................. 3

Section Location ........................................................ 4

Block Diagram ...................................................... 5 - 8

Interconnection Diagram .................................... 9 - 11

Display Schematic and PCB ............................... 12 - 19

Surround Schematic and PCB ............................ 19 - 34

Data Schematic and PCB ................................... 37 - 41

S-Video Schematic and PCB .............................. 42 - 47

Video Schematic and PCB ................................. 48 - 50

Input Lamp Schematic and PCB ........................ 51 - 56

Component Video Schematic and PCB ............ 57 - 60

Tuner AM/FM Alignment Procedure ................. 61 - 62

Tuner/RAA1 Schematic and PCB ....................... 63 - 66

Balanced Schematic and PCB ........................... 67 - 70

Parts List ............................................................ 71 - 90

Exploded Views and Parts Lists .......................... 91 - 94

Repacking Instruction .............................................. 95

CONTENTS

A/V CONTROL CENTER

PERFORMANCE SPECIFICATIONS

Audio

FrequencyResponse

Stereo: Leftand RightSmall speakers:80Hz-20,000Hz

Subwoofer:20Hz-80Hz

Leftand RightLarge speakers:20Hz-20,000Hz

Subwoofer:OFF

Pro-Logic IIx: (Movie Processing Mode)

Left,Center, Right,Smallspeakers: 80Hz-20,000Hz

SurroundSmall speakers:80Hz-20kHz

Subwoofer:20Hz-80Hz

(Music Processing Mode)

Left,Center,Right,Largespeakers: 20Hz-20,000Hz

SurroundLarge speakers:20Hz-20,000Hz

Subwoofer:OFF

DolbyDigital and DTS:

Left,Center, Right,Smallspeakers: 80Hz-20,000Hz

SurroundSmallspeakers:80Hz-20,000Hz

Subwoofer:20Hz-80Hz

Left,Center,RightLargespeakers: 20Hz-20,000Hz

SurroundLarge speakers:20Hz-20,000Hz

Subwoofer:20Hz-80Hz

ExternalInput

Left, Center, Right, Left Surround, Right Surround:

20Hz-20,000Hz

Subwoofer:20Hz-20kHz(no LPfiltering)

RatedOutput

AllModes:2.0Vrmsfor full bit digitalinput

InputImpedance

22kohms

OutputImpedance

47 ohms at all outputs

MaximumOutputVoltage

9.5Vrms

TotalHarmonicDistortion

0.005% at all outputs

Sensitivity

AnalogInput: 400mV for 2.0Voutput

SignalToNoise Ratio –All Outputs

Greater than 90dB un-weighted. Greater than 100dBA

weighted.Greater than 98dBCCIR.

MaximumInputSignal

AnalogInput:6Vrms

VoltageGain

Analog Input to Output: 14dB

FrequencyResponse

+0,-0.5dBfrom20Hzto20,000Hz

ToneControls

+12dB,-12dB from flatsetting

FMTuner(TM1option)

UseableSensitivity

14dBF which is 1.4uV across 75 ohms

50dBQuietingSensitivity

Mono: 19dBF which is 2.4uV across 75 ohms

Stereo: 35dBF which is 15uV across 75 ohms

SignalToNoise Ratio

Mono:75dB

Stereo:70dB

FrequencyResponse

Mono:+0, -1dBfrom20 to15,000Hz

Stereo:+0,-1dB from20 to15,000Hz

HarmonicDistortion

Mono:0.3%at100Hz,0.3% at1,000Hz,0.3% at10,000Hz

Stereo:0.45%at 100Hz,0.45%at 1,000Hz,0.65%at 10,000Hz

IntermodulatonDistortion

Mono:0.25%

Stereo:0.45%

CaptureRatio

1.2dB

AlternateChannel Selectivity

75dB

SpuriousResponse

100dB

ImageResponse

75dB

RFIntermodulation

65dB

StereoSeparation

45dBat100Hz,45dB at1,000Hz,35dBat 10,000Hz

SCARejection

65dB

GeneralSpecifications

PowerRequirements

100Volts,50/60Hz at 65watts

110Volts, 50/60Hzat 65 watts

120Volts,50/60Hz at 65watts

220Volts,50/60Hz at 65watts

230Volts,50/60Hz at 65watts

240Volts,50/60Hz at 65watts

NOTE: Refer to the rear panel of the MX135 for the correct

voltage.

OverallDimensions

FrontPanel: 17-1/2 inches(44.5cm) wide, 9-7/16inches

(23.97cm) high. Depth behind front mounting panel is 19

inches (48.26cm) including clearance for connectors. Panel

clearance required in front of mounting panel is 1-1/8 inches

(2.9cm).

Weight

31.5 pounds (14.3kg) net, 55 pounds (25kg) shipping weight

PERFORMANCE SPECIFICATIONS con’t

MX135

AMTuner(TM1option)

Sensitivity

20uV external antenna input

SignalToNoise Ratio

48dBat 30% modulation

58dBat 100% modulation

HarmonicDistortion

0.5%maximumat 50%modulation

FrequencyResponse

50Hzto6kHzNRSC

AdjacentChannelSelectivity

45dBminimumIHF

ImageRejection

65dBminimumfrom540to1600kHz

IFRejection

80dBminimum

1. The heavy lines on the schematic denote the primary

signal path.

2. Unless otherwise noted, all voltages indicated on the

schematics are measured under the following conditions:

a. AC input at 120 volts, 50/60Hz.

b. All voltages are +/-10% with respect to ground. A

high impedance (10 megaohm) voltmeter must be used.

3. On PC board drawings, Square pad indicates:

a. Polarized Capacitors - Positive

b. Diodes - Cathode

c. Others - Pin 1

4. WARNING

Parts marked with the symbol have critical

characteristics. Use only replacement parts recom-

mended by the manufacturer.

NOTES

REAR PANEL

SECTION LOCATIONS

BOTTOM VIEW WITH COVER REMOVED

TOP VIEW WITH COVER REMOVED

5 6

MX135

BLOCK DIAGRAM

7 8

BLOCK DIAGRAM con’t

91110

INTERCONNECT

MX135

12 1413

DISPLAY 050036 SH 1 OF 2

15 1716

DISPLAY 050036 SH 2 0F 2

MX135

18 2019

SURROUND 050037 SH 1 OF 6

KEYBOARD SECTION 050053

LED SECTION 050054

DISPLAY CONTROL SECTION 050036

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