McIntosh MHT 200 Service Manual

Page 1

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CONTENTS

Performance Specifications ..
Notes .....
Rear Panel .
Section Location .
Block Diagram
Interconnection Diagram ..
Display Schematic and PCB .....
Keyboard Schematic and PCB

.13,17-18

Bottom Schematic and PCB ...... .. 19 - 24
Power Supply Schematic and PCB .. 25 - 28
Data2 Schematic and PCB 29 - 32
DataI Schematic and PCB .. 33 - 36

Digital Schematic and PCB
S-Video Schematic and PCB.
Composite Video Schematic and PCB
Main Audio Schematic and PCB
Multi Channel Schematic and PCB.
Amplifier Schematic and PCB .........
Tuner AM/FM Alignment Procedure.
Tuner/RAA1 Schematic and PCB .

..105 -106
..107-110

DSP Module PCB ....... . 111
Backup Power Supply . 112
Exploded Views and Parts LIsts .. 113 - 114
Repacking Instruction ........................ 1 15

SERVICE MANUAL

Page 2

PERFORMANCE SPECIFICATIONS

Preamplifier and Processor Specifications

Frequency Response
Stereo:
Left and Right Loudspeakers: +0A0.5dB from 20Hz-20,000HZ

Music l-4:
Left, Center, Right Loudspeakers: +0-0.5dB from 20Hz
20,000Hz
Large Surround Loudspeakers: +0-0.5dB from 20Hz-
20,000Hz

Pro-Logic:
Left, Center, Right, Large Loudspeakers: +I-0.5dB from
20Hz-20,000Hz
Large Surround Loudspeakers: +l»3dB from 20Hz-6.3kHz
Subwoofer': 20Hzl40Hz

Dolby Digital, DTS and External Input:
Left, Center, Right Large Loudspeakers: +I»0.5dB from 20Hz
20,000Hz
Large Surround Loudspeakers: +I-0.5dB from 20Hz-
20,000Hz
Subwoofer': 20Hz-l40Hz

Rated Output
2V for all channels

Input Impedance
22k ohms

Output Impedance
Less than 560 ohms for all channels

Maximum Output Voltage
8V

Total Harmonic Distortion
0.05% for all channels

Sensitivity

Analog Input: 100mV Il-lF

Dolby Level: 200mV Input

External Input: 200mV for 20V Output

Signal To Noise Ratio
Greater than 90dB A-weighted

Maximum Input Signal
Analog Input: 6Vrms

Tone Controls
+/Al2dB from the flat setting

If any of the channels have the Loudspeaker Selling of Small, the
sulmroofer has a electronic low pass filter with a corner frequency of
80H: and a 24dB per Octave roll-off in all modes except external.
The Frequency Response of the Subn'oofer Channel is also
determined by the Crossover Setting.

Power Amplifier Specifications

Power Output

Minimum sine wave continuous average power output per
channel, all channels operating is: 100 watts into 4 ohm load, 70
watts into a 8 ohm load

Rated Power Band
20Hz to 20,000Hz

Total Harmonic Distortion

Maximum Total Harmonic Distortion at any power level from
250 milliwatts to rated power output is: 0.05% for 4 or 8 ohm
load

Dynamic Headroom
l .SdB

Frequency Response
+0, -0.25dB from 20Hz to 20,000Hz
+0, ~3dB from 10Hz to 1000,000Hz

Sensitivity
1.0 Volt

A-Weighted Signal To Noise Ratio
92dB (l IZdB below rated output)

Intermodulation Distortion

Maximum Intermodulation Distortion if instantaneous peak
output per channel does not exceed twice the rated output, for
any combination of frequencies from 20Hz to 20,000Hz, with all
channels operating is: 0.05% for 4 or 8 ohm loads

Input Impedance
20,000 ohms

Wide Band Damping Factor
100 at 4 ohms
200 at 8 ohms

General Specifications

Power Requirements

100 Volts, 50/60Hz at 8.4 Amps

110 Volts, 50/60Hz at 7.7 Amps

120 Volts, 50/60HZ at 7.0 Amps

220 Volts, 50/60HZ at 3.5 Amps

230 Volts, 50/60Hz at 3.5 Amps

240 Volts, 50/60HZ at 3.5 Amps

Nate: Refer to rear panel of the MHTZOO for the correct voltage.

Dimensions

Front Panel: 173/4 inches (45.09cm) wide, 97/) inches
(23.97am) high. Depth behind front mounting panel is 19 inches
(48.26cm) including clearance for connectors. Panel clearance
required in front of mounting panel is l»l/8 inches (2.9cm).

Weight
73 pounds (33.1kg) net, 87 pounds (39.5kg) shipping