McIntosh MA8900 Service Manual

WAT T S
.20 2.0
20
20
m
2.0
m
- -
-
30 20 -
40 10
-
50
D E C I B E L S
P O W E R O U T P U T
INPUT
PUSH - TRIM
HOLD - SETUP
HEADPHONE 1 OUTPUTS
Performance Specifications ..........................................2
Notes ...........................................................................2
Rear Panel ...................................................................3
Section Location ..........................................................4
Block Diagram .......................................................5 - 6
Interconnection Diagram ........................................7 - 8
PS Backup/PS Low Volt Schematic and PCB ..........9 - 14
Control Schematic and PCB ................................15 - 24
Audio Schematic and PCB ..................................25 - 34
SERVICE MANUAL
MA8900
INTEGRATED AMPLIFIER
SERIAL NO. AFJ1001 And Above
200
0
M A 8 9 0 0
I N T E G R A T E D A M P L I F I E R
POWER GUARD
30 125
USB
2
DSD256
CONTENTS
2.0
500 2K 10K
35%
EQUALIZER
Heatsink Schematic and PCB ..............................35 - 40
L & R Terminal Schematic and PCB ....................41 - 44
Display/Mtr Lt/Hdphn Schematic and PCB ..........45 - 52
Digital Audio Schematic and PCB .........................53 - 60
High Volt PS Schematic and PCB ........................61 - 64
Tone Schematic and PCB ....................................65 - 68
Parts List .............................................................69 - 84
Repacking Instruction ................................................85
MA8900
WAT T S
.20 2.0
20
20
m
m 200
- -
-
30 20 -
40 10
-
50
0
D E C I B E L S
P O W E R O U T P U T
VOLUME
TRIM / SETUP
ADJUST
MUTE STANDBY/ON
RESET