McIntosh MX136 Manual de usuario
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 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
HDMI Module ......................................................... 71
HDMI Power Supply ................................................ 72
Parts List ............................................................ 73 - 90
Exploded Views and Parts Lists .......................... 91 - 94
CONTENTS
SERVICE MANUAL
Serial Number XM1001 And Above
SERIAL NO. XM1001 And Above
MX136
A/V CONTROL CENTER
PERFORMANCE SPECIFICATIONS
2
AudioSpecifications
FrequencyResponse
Left,Center,Right,
LeftSurround,
RightSurround,
LeftBack,RightBack:
±0.5dBfrom20Hz-20,000Hz
Subwoofer1:
±0.5dBfrom20Hz-140Hz
TotalHarmonicDistortion
0.005%maximumfrom20Hzto20,000Hzatratedoutput
SignalToNoise Ratio
Phono: 86dBbelow 10mV input (AWeighted)
HighLevel: 96dB below rated output (AWeighted)
RatedOutputVoltage
2.5V Unbalanced Outputs (Main)
5.0V Balanced Outputs (Main)
MaximumVoltageOutput
9.5VUnbalanced
19VBalanced
OutputImpedance
100 ohms Unbalanced
200ohms Balanced
InputImpedance
Phono: 47kOhms, 65pf
HighLevel: 22k Ohms Unbalanced
50kOhms Balanced
SensitivityforRatedOutput
Phono: 5mV
HighLevel: 500mVUnbalanced
1VBalanced
MaximumInputSignal
Phono: 50mV
HighLevel: 5V Unbalanced
10VBalanced
VoltageGain
Phono to Tape/VCR Out: 40dB
Phono to Output (Main): 54dB
HighLevel to Tape/VCR Out: 0dB
High Level to Output (Main): 14dB
Tone Controls
Bass Control: ±12dBat30Hz
TrebleControl: ±12dBat 10,000Hz
GeneralSpecifications
PowerRequirements
100Volts,50/60Hz at 65 watts
110Volts,50/60Hz at 65 watts
120Volts,50/60Hz at 65 watts
220Volts,50/60Hz at 65 watts
230Volts,50/60Hz at 65 watts
240Volts,50/60Hz at 65 watts
Note: Refer to the rear panel of the MX136 for the correct
voltage.
OverallDimensions
Widthis17-3/4 inches (45.09cm)
Heightis 9-7/16 inches(23.97cm) includingfeet
Depth is 18-3/4 inches (47.63cm) including the Front Panel
and Knobs
Weight
31 pounds (14.06Kg) net, 55 pounds (24.95Kg) shipping
ShippingCartonDimensions
Width is25inches (63.5cm)
Depthis 28 inches(71.12cm)
Heightis18-3/8 inches (46.67cm)
FMTunerSpecifications
UseableSensitivity
14dBfwhich is 1.4uVacross 75 ohms
50dBQuieting Sensitivity
Mono: 19dBfwhich is 2.4uVacross 75 ohms
Stereo: 35dBf which is 15uV across 75 ohms
SignalToNoise Ratio
Mono: 75dB
Stereo: 70dB
FrequencyResponse
Mono: +0,-1dB from20to15,000Hz
Stereo: +0,-1dBfrom 20 to 15,000Hz
HarmonicDistortion
Mono: 0.3%at100Hz
0.3%at1,000Hz
0.3%at10,000Hz
Stereo: 0.45%at100Hz
0.45%at1,000Hz
0.65%at10,000Hz
IntermodulationDistortion
Mono 0.25%
Stereo 0.45%
PERFORMANCE SPECIFICATIONS con’t
MX136
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
3
CaptureRatio
1.2dB
AlternateChannelSelectivity
75dB
SpuriousResponse
100dB
ImageResponse
75dB
RFIntermodulation
65dB
StereoSeparation
45dBat100Hz
45dBat1,000Hz
35dBat10,000Hz
SCARejection
65dB
AMTunerSpecifications
Sensitivity
20uV ExternalAntenna Input
SignalToNoise Ratio
48dBat 30% modulation
58dBat 100% modulation
HarmonicDistortion
0.5%maximum at 50% modulation
FrequencyResponse
50Hzto6kHzNRSC
AdjacentChannelSelectivity
45dBminimumIHF
ImageRejection
65dBminimumfrom540to1600kHz
IFRejection
80dBminimum
4
SECTION LOCATIONS
BOTTOM VIEW WITH COVER REMOVED
TOP VIEW WITH COVER REMOVED
MX136
5 6
BLOCK DIAGRAM
7 8
BLOCK DIAGRAM con’t
91110
INTERCONNECT
MX136
1
12 1413
DISPLAY 750565 SH 1 OF 2
2A
BC
15 1716
DISPLAY 750565 SH 2 0F 2
MX136
2A
BC
18 2019
2A
SURROUND 750570 SH 1 OF 6
3
KEYBOARD SECTION 750568
2C
LED SECTION 750569
2B
DISPLAY CONTROL SECTION 750565
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