Mcintosh MA 5100 service information
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MA S|OO
64'
SERVIffiffi
sTARTTNG
Mc INT0SH
LAB0RAT0RY
lNC.
INFORMATION
wrTH
CHAMBERS STREET
2
sERIAL
No.
30H15
BINGHAMTON,
---
NEW YORK
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t'rt
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lo
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Unless
watt,
are
farads
otherwise specified,
I0% tolerance. Capacitance
and
microfarads
in
(pF.
.
)
(mfd);
The terminal numbering
board
wires is
for reference
resistance values
values
values
greater
of rotary switches
only.
are in
smaller than I
than t
and
are
printed
ohms, L/2
pico-
in
circuit
A11
voltages
1. Use of an
AII voltages
2.
No signal at input
3.
AC
4.
5. Front
input at
panel
Input Selector
Mode
Selector STEREO
Volume
Balance
Bass
TrebIe
Comp
are measured under
lO-megohm
!LO%
input
with
impedance
respect to
terminals.
LL7
volts, 50/60 cycles.
controls
at:
AIIX
IVIAX
ZERO
FI,AT
FI,AT
RTAA
the following
VTVM voltmeter.
chassis
Tape
Phase
Speaker
Power
LF
Filter
Filter
HF
Iroudness
conditions:
ground.
NOR}iIAL
oo
ON
ON
FLAT
FI,AT
NORMAL
PREAMP, SECTION PRINTED
CIRCUIT BOARD
O43-723
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aux
TAPE
TUXER
PHONO I
PHONO 2
HO
TAPE
TAPE
uorrron
TAPE
OUTPUT
REAR
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33
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75V
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:{
t5K
ORN/WHT
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/
SI.2
(PARTIAL)
FRONT
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aux
T
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TAPE
F
f
Tur{ER
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z
-
pHolo
J
IIJ PHONO 2
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TAPE
tr.
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TAPE
OUTPUT
t
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;
L_-
"!to"gglt:-J
'----J
s4
FRONI
l-"rl
tsl
"l
LTI
+R58C
I
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dl
(FILTER
SECTION)
c
.47/ 75V
rj.
",..:".
L
r5
PREAMP. SECTION
PRINTED
o43-
R 648
500
loo K
CIRCUIT EOARD
723
K
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-t
l1
K
82
I
lr
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ll
I
lOOald/ l2
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Qtl
V
vto
R55
to0K 5%
ct8
oto
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n:
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Ei
3l
"r-
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H EAVY LINE SHOWS
R 64A
500
L
(FILTER
+
R58D
SECTIoN )
K
4022R
l5
c
RIGHT OUTPUT
I
J
PRIMARY
SIGNAL
PATH
PREAMP. SECT
MA 5lOO 154
ION
-
282
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