McIntosh MHT200, Service Manual

Page: 5 / 60

5 7 6
BLOCK DIAGRAM
MHT200
AUDIO
BUFFERS
LEFT
LISTEN
AND
RECORD
INPUT
SWITCHING
TAPE
LEFT
AND
RIGHT
OUTPUT
SWITCHING
AUDIO
BUFFERS
AUX
CD1
DVD
TUNER
VCR1
VCR2
AUX
CD1
DVD
TUNER
TV
VCR1
VCR2
RIGHT
LISTEN
AND
RECORD
INPUT
SWITCHING
TIME
DELAY
S/PDIF
RECEIVER
BITSTREAM
SELECTOR
CROSSOVER
FILTERS
LEFT
INPUT
BUFFER
CENTER
INPUT
BUFFER
RIGHT
INPUT
BUFFER
L-SUR
INPUT
BUFFER
R-SUR
INPUT
BUFFER
L C R SUB
EXT. PROCESSOR
INPUT
CONTROL
MICRO
L-SUR
VOLUME
R-SUR
VOLUME
SUB
VOLUME
RIGHT
VOLUME
CENTER
VOLUME
LEFT
VOLUME
ANALOG SWITCHING
DIGITAL
INPUT
SWITCHING
A
B
C
D
E
F
COAX
DRIVER
OPTICAL
DRIVER
TV
LEFT
CHANNEL
VCR1
VCR2
VCR1
VCR2
RIGHT
CHANNEL
CONVERTER
CONVERTER
CONVERTER A (COAX)
B (COAX)
C (COAX)
D (OPTICAL)
E (OPTICAL)
F (OPTICAL)
AUX
CD
SAT
TV
DVD
VCR1
2 CH
A /D
R
L
ANALOG
INPUTS
OPTICAL
COAX
DIGITAL
OUTPUTS
IR
MICRO
FRONT PANEL SENSOR
ZONE B
IR DATA
ZONE A
IR DATA
CONTROL LOGIC
DSP
MODULE CONTROL
RS232
FRONT PANEL
PUSHBUTTONS
FRONT PANEL
ROTARY SWITCHES
FRONT PANEL
VOLUME
TUNER
CONTROL
ZONE B
VOLUME CONTROL
FRONT PANEL
DISPLAYS
INPUT
SWITCHING
POWER
CONTROL
CONTROL
MICRO
EIGHT CHANNEL
VOLUME/TONE
CONTROL
CONTROL
MICRO
DATA
DRIVERS
TUNER
AUX
CD1
CD2
TAPE1
TAPE2
SAT
TV
LV
VCR1
VCR2
DVD
ZONE A
DATA DECODER
ZONE B
DATA DECODER
DD / DTS /
PRO LOGIC II DECODER
L-BSUR
INPUT
BUFFER
R-BSUR
INPUT
BUFFER
SL SR BSL BSR
BSL
VOLUME
BSR
VOLUME
CD2
TUNER TAPE1
AUX
TV LV
VCR1
DVD
ZONE
A
ZONE
B
SUM
A+
B
SUBWOOF
INPUT
BUFFER
OUTPUT
MUTING
OUTPUT
MUTING
OUTPUT
MUTING
OUTPUT
MUTING
OUTPUT
MUTING
OUTPUT
MUTING
LEFT
FRONT
CENTER
RIGHT
FRONT
SUBWOOFER
OUTPUT
MUTING
OUTPUT
MUTING
LEFT BACK
SURROUND
RIGHT BACK
SURROUND
ZONE A
8 CHANNEL
OUTPUT
LEFT
SURROUND
RIGHT
SURROUND
ZB LEFT
VOLUME
ZB RIGHT
VOLUME
OUTPUT
MUTING
OUTPUT
MUTING
LEFT
RIGHT
ZB
OUTPUT
DSP
EXT
PROCESSOR SWITCHING
L C R SUB SL SR BSL BSR L C R SUB SL SR BSL BSR
L
C
R
SUB
LS
RS
BSL
BSR
8 CHANNEL D/A
DIFF
AMP
VOLUME
AMP
PREDRIVER
DRIVER OUTPUT
POWER
GUARD
GAIN
ELECTRONIC
ATTENUATOR
PG
INDICATOR
DRIVER
PG
INDICATOR
CURRENT
SOURCE
DC
BIAS
DIFF
AMP
VOLUME
AMP PREDRIVER DRIVER OUTPUT
NEGATIVE
CURRENT
LIMITER
POSITIVE
CURRENT
LIMITER
NEGATIVE
FEEDBACK
DC
SENSING
RELAY
DRIVE
TURN ON
DELAY
OUTPUT
RELAY
1 INPUT
ONE CHANNEL SHOWN
OUTPUT
TUNED
CIRCUIT
88-108MHz
TUNED
CIRCUIT
88-108MHz
TUNED
CIRCUIT
88-108MHz
FM
OSCILLATOR
98.7-118.7 MHz
LOCAL
OSCILLATOR
DOUBLE
BALANCED
MIXER
BALANCED IF
TRANSFORMER
10.7 MHz
LINEAR
PHASE
FILTER
10.7 MHz
IF
AMP
LINEAR
PHASE
FILTER
10.7 MHz
IF
AMP
LINEAR
PHASE
FILTER
10.7 MHz
AM
OSCILLATOR
970-2160 kHz
AM
MIXER
FM
ANT
RF
AMP
EXT
AM ANT
ROD
ANTENNA
520-1710 kHz
TUNED
CIRCUIT
520-1710 kHz
RF
PLL
LF
FILTER
450 kHz
IF
AMP
AM
DETECTOR
LIMITER
DETECTOR
MPX
MPX
FILTER
MPX
FILTER
R
L
OUTPUTS
STEREO
BLEND
RAA1 REMOTE AM TUNER
OPTIONAL
AM/FM TUNER
CONTROL
MICRO
FET
CASCODE
AMP
FET RF
AMP
TUNING
AMP
L
AUDIO
AMP
R
AUDIO
AMP
OSD ON/OFF
SWITCH
OSD ON/OFF
SWITCH
VIDEO SWITCHING
SAT
TV
DVD
VCR1
VCR2
SAT
TV
DVD
VCR1
VCR2
ON SCREEN
DISPLAY
MODULE
CONTROL
MICRO
AUX
CD1
AUX
CD1
ZONE
A AND B
COMPOSITE
VIDEO
SWITCHING
ZONE
A AND B
SUPER
VIDEO
SWITCHING
ZONE A
COMPONENT
VIDEO
SWITCHING
COMPONENT 1
COMPONENT 2
MONITOR A
MONITOR B
VCR1
VCR2
MONITOR A
VCR2
VCR1
COMPOSITE
VIDEO
OUTPUTS
SUPER
VIDEO
OUTPUTS
VIDEO
AMP
VIDEO
AMP
VIDEO
AMP
VIDEO
AMP
VIDEO
AMP
VIDEO
AMP
VIDEO
AMP
TAPE OUT
ELECTRONIC
SWITCHING
TAPE OUT
ELECTRONIC
SWITCHING
TAPE OUT
ELECTRONIC
SWITCHING
TAPE OUT
ELECTRONIC
SWITCHING
COMPONENT
VIDEO OUTPUT
FUSE
LINE
VOLTAGE
POWER SUPPLY
POWER
CONTROL
AMPLIFIER
POWER
TRANSFORMER
12VAC
LAMPS
RECTIFIERS
AND FILTERS
BACKUP
POWER
SUPPLY
5V
15V
-15V
6VAC VFD FILAMENT
33VDC TUNER
-29VDC VFD
53 VDC AMP
-53VDC AMP
AMPLIFIER
SAT
SAT