McIntosh MHA150 Service Manual

W A T T S
.05
5m
.05m .5m
-40 -30
-60 -50
D E C I B E L S
INPUT OUTPUT
PUSH - TRIM HOLD - SETUP
Performance Specifications .....................................2 - 3
Notes ...........................................................................2
Rear Panel ...................................................................3
Section Location ..........................................................4
Block Diagram .......................................................5 - 6
Interconnection Diagram ........................................7 - 8
MHA150
HEADPHONE AMPLIFIER
SERIAL NO. AET1001 And Above
.5
5
50
-20
-10
0
M H A 1 5 0 H E A D P H O N E A M P L I F I E R
USB
HEADPHONES
CONTENTS
SERVICE MANUAL
POWER GUARD
.05m .5m
-60 -50
70%
DSD256
STANDBY/ON
Main Schematic and PCB .......................................9 - 25
Amp/Left Terminal/ Right Terminal Sch and PCB .27 - 36
Hdph/DsplyMtr Lt/Pshbtn Schematic and PCB ....37 - 42
Parts List .............................................................41 - 51
Repacking Instruction ................................................53
W A T T S
.05
.5
5m
5
50
-40 -30 -20
-10
0
D E C I B E L S
VOLUME PROFILE
PUSH - HXD HOLD - PROFILE
RESET
MHA150