McIntosh MA 5100 User manual

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sTARTTNG
wrTH
sERIAL
No.
30H15
McINT0SH
LAB0RAT0RY
lNC.
MA S|OO
SERVIffiffi
INFORMATION
64'
2 CHAMBERSSTREET
BINGHAMTON,
NEWYORK
---
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Unless otherwise specified, resistance values are in ohms, L/2
watt, and I0% tolerance. Capacitance values smaller than I
are in microfarads (mfd); values greater than t are in pico-
farads (pF.
) .
The terminal numbering of rotary switches and printed circuit
board wires is for reference only.
A11 voltages are measured under the following conditions:
1. Use of an lO-megohm input impedance VTVMvoltmeter.
2. AII voltages !LO% with respect to chassis ground.
3. No signal at input terminals.
4. AC input at LL7 volts, 50/60 cycles.
5. Front panel controls at:
Input Selector AIIX
Mode Selector STEREO Tape
Phase
Speaker
Power
LF Filter
HF Filter
Iroudness
NOR}iIAL
oo
ON
ON
FLAT
FI,AT
NORMAL
Volume
Balance
Bass
TrebIe
Comp
IVIAX
ZERO
FI,AT
FI,AT
RTAA
PREAMP,SECTIONPRINTED
CIRCUITBOARD
O43-723
-

1
Ii
J
I
il
:f
I
i
",';;ir
l r----.,,-k=."',i;'"Illi
",.--*4,.^r-:,:ll i
r/2 PARrum-Oza _ j
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3=
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-
:{
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I
I
tov
RII I RI7
f-
I
I
I
I
/ SI.2 FRONT
/ (PARTIAL)
REAR
l- aux
o
F TAPE
l
O. TUXER
z
- PHONO I
J
lrJ PHONO 2
z
Z TAPE HO
o
F
r
lrl
J TAPE
l_ uorrron
TAPE
OUTPUT
tul
Le_t
8V
lOOntd/12
V
RzZ 75V
I
I
I
I
t5K
ct2
I
1l
I
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c24
-22
33
;
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T aux
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F TAPE
f
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z
- pHolo t
J
IIJ PHONO2
z
Z rlpE Ho
I
o
F
I
I
tr. TAPE
LroNrToR
TAPE
OUTPUT
s4
FRONI
'----J
I
ORN/WHT
L_- "!to"gglt:-J

- +R58C (FILTER SECTION)
I
I
I
c
r5
R648
500 K
i
I
I
-t
vto
loo K
L rj. ",..:".
PREAMP.SECTION
PRINTED
CIRCUITEOARD
o43- 723
li--
,47
Qtl
l-"rl
tsl
=l
"l
dl
LTI
.47/75V lOOald/ l2 V
RIGHTOUTPUT
HEAVY LINE SHOWS
PRIMARY
SIGNAL
PATH
ct8 40
22
R
l5
c
i n: I
J
R64A
500 K
R55
to0K5%
l1
lr
ll
82
K
I
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oto
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3l
"r-
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PREAMP.SECT
ION
MA5lOO 154
- 282
L + R58D (FILTER
SECTIoN)

(
PRE
6r
LEFT IIIPUT_
(FROI LEFT OUTPUT
OF PREAMP
SECTIONI
R5EB
ATP SECTION)
rl-
| + REol
7--
ti I
i I + gRl/\_
II
I
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ll
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470 K
FILTER SECTION
PRI
o43
680 5*
TED
C
722
4.?K 5L
RCUIT
BC I
ARD :ov*-@!I-rsv
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to4
cilz
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.+
+
RfGHT
ftfPUT
-
(FROM
RIGHT
OUTPUT
OFPREATP
SECTION}
t
I
aarl
Y
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n lt8
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9
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T1.8
ERll4
it=-
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t
58A
tE
IP
t 5 garz
t50
R120
r.infdao% I I t::#8i'
.t | --
---i Y
J : L--
LTER
SECTION
PRINTED
4?oK I seo
s* 4'7x 5L
+
-- _ _--_J
S
;IRCUIT
BOARD
O43-7?2
M
q
ffi
Wlu"nr*",
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ffi
F
ILTER
MA
5loo

POWEROUTPUTSECTION
PRINTEDCIRCUIT
BOARD
O43-7?4
ANNEL
I
LEFT
CH
i l;^-
r(a
ilrd
Hl[,1fr;
+l
+H(
PUT
IT OF
JT sEcrtot)
RIGHTCHANNEL
POWER
OUTPUTSECTION
PRINTED
CIRCUIT
BOARD043_724
Q
219 Q
2t7
TOP BOTTOM
@@@
Q
2r3 Q
215
Q
220 Q 218
TOP BOTTOM
@@@
Q214 0 216 Q
212
LOCATION
OF
TRANSISTORS
NOTON PRINTEDCIRCUIT
BOARDS

LEFTCHANNEL
POWER
OUTPUT
SECTION
PRINTED
CIRCUIT
BOARD
O43-7?4
--l I
(FROX
LEFT OUTPUT
OFFILTER
SECTIOT)
LEFT ITPU
f
0
il5 V
-.o<
YEL
---)r-- ot'1
- ,04
:--\/* o'',
R€D/WHT --l
RIGHTCHANNEL
POWER
OUTPUTSECTION
PRINTED
CIRCUIT
BOARD
O43
- 724
9 azze
IFROMRIGHTOUTPUT
OFFILTER
SECTION)
RIGHT INPUT R202
9
i
I
j
i
i
R214
HEAVYLINE
SHO

+
TT-l-t
l*telf"''
) |..1"."1 ti
Rl:
ali
to*
R251
l--'Fy'"''"1
I li,nTl I "-.","
L+R OUTPUT(e_*
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I ITB I AD2r2
I
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t-
I
-
:lt
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t
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FI=4.'.1
l" "'"1 |
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I
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I
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I
I
I
I
I
I oN
220 5%
LEFT
SPEAKER
? OUTPUT
I
I
HEADPHONES
t
o^__
POWER
OUTPUT
SECT
I
ON
MA
5lOO t54-244
|lS
PRIMARYSIGNAL PATH
_lI
I
R39
HEAVY LINE SHOWS
PRIMARYSIGNAL
PATH
VIO/WHT RIGHT OUTPUT
PREAMP.
SECTION
MA5f
OO t54
- 242

--'t-
o
OFF
c 303
t-:
REDI
']
I
9V
oi!
-P
rl
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tl
t
-o
'8
.
oo5/t400v
f
I
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IL
III
IAJ
'll-ll-
?t t"l t"
fIl
(FROI LEFT OUTPUT
OFFILTER SECTIO]I'
rEF T
l|7V
AC
70- 200
w
50- GOCPS
(FROM
RIGHT
OUIPU]
OF FILTER SECTIOII)
RIGHI IIPUT
i{o
oo
-::
.otv

I
f
II
I
i
R302
220 5W R303
220 5W R304
t.2K
rw R305
8.2
K
R301
too 5w
R307 R308
loo 5w 220 5W
o
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Ro
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POWER
SUPPLY
SECTIO
N
MAstOO t54
- 285

REPLACEMENT
PARTS
A11 parts not l-isted. are cornmon
items obtain-
able from rad.io parts jobber.s.
RepI-acement parts may be obtained when ordered
by PART NIIMBER
from:
Mcfntosh Laboratory, Inc.
Custome:: Service Department
2 Chambers Street
Binghamton, New York 13903
(telephone 607 -7z3i5rz)
CAPACITORS
Description
Syrnbol
Nurnber
cr,2
c7,B
cg,l_0
CII,T2
c13,14
u l_) , l_o
d1, 1Q
CI9,20
czr,22
c23,2+
c101,102
vru), Iv+
nln? f nA
v!v t rrvv
cll_1
crrz,rI3
vav)rzv+
c207
,2O8
c2r1,21_2
c2I3,2r+
c304
c305
ca06
c307
caoB
ca09
DzOI,2O2
D2O3,2O4
D2O5,206
D2O7,2O8
Mylar
Mylar
El-ect.
Mylar
My1ar"
Mylar
Mylar
E1ect.
Mylar
Mylar
Myla::
MyLar3
Mylar
Ta. Elect.
Ta. Elect.
E-l aa{-
E1ect.
Mylar
Mylar
Elect.
E1e
ct.
E1ect.
E1ect.
Elect.
E1e
ct .
Part
Number
061+-043
uo+-uJ
/
066-018
o64-o37
061+-037
064-039
064-01+5
056-018
061+-045
064-043
064-o3B
064-o40
064-01+3
066-091
066-092
066-018
066-r_11
064-01r4
064-044
UOO
- l-LrJ
o66-o99
066-o93
066-018
065-106
055-106
070-040
070-030
070-030
07o-022
.1Z17t 4rAV
.luF 25OV
lOOuF IzV
.fuF 25ov
.luF 25ov
.47"r 75v
.47uF 250v
100uF 12V
.47uF 25ov
.22uF 25ov
^/^i- - ^z
. J-u"e 12Av !A7o
.oluF ASov a0%
.22uF 25OV
1uF 35v
1.5uF 35v
100uF lzY
lBOuF 3V
.01;luF 25oV
.
u4iu-c zruv
80/Bo/r5o/5ouF
2oo
/200/L'o /r'ov
2oo/'oouP
too/50v
2oO/5oouF
-100/_75v
100uF 12V
9300uF I+5V
9300uF' Ii5v
Silicon
Silicon
S
ilicon
S
ilicon
DIODES
reference d"iode
rect ifier
rect ifier
signal d"iod"e
D2O9,zto
DzLr,2r2
uar), zL+
D30r-
D302
D303
D304
D305
D306
D307
D30B
D309
S
ilicon
Silicon
S
ilicon
S
ilicon
S
il- icon
S
ilicon
S
il-icon
Sil-icon
S
il- icon
Silicon
Sil-icon
S
il icon
signal diode
signal d"iode
rect ifier
::ect if ier
nectif ie::
rect ifier
nect ifier
r.ect if ier
rect ifier
rect ifier
rectifier
rect if ier
o7o-o22
070-031
070-031
070-03r-
070-031
070-031
070-031
o?n-nl,l
070-041
o7n-o)'1
070-030
nRo-n r
(
r22-o64
132-002
1?2-(Or
1?,2-n21
r32-O?t
1?2-O1,2
Lt.->v I
| <il-(t <\
L)+-VJJ
'l
1,lt
-17)
'I
?Jr-l??
!)+-lzv
Flnt
L?OI,2O2 Choke
qr,2
Q3,4
q5,6
Q7,
B
Q9r
10
Ql1,12
Q101,102
^r ^ ^ r ^l
rtfuJrru4
q20r,202
4zu),av+
q2o5,206
q2o7,2OB
q2O9,2rO
qzII,2t2
q2I3'21-l+
q2I5,2].6
q2I7,2rB
q2r9,220
K'J
R5B
R63
R64
R22I
,222
FUSES
.r'use l.)A 5Io-lrt-o
CHOKES
2uF
TRANSISTORS
Sillcon NPNTransistor
Sillcon NPNTr:ansistor
Silicon NPNTransisror
Silicon NPNTr.ansiston
Silicon NPNTransistor
Silicon. NPNTrans
istor
Silicon NPNTransistor
Silicon NPNTnansisror
Sillcon PNPTransistor
Silicon PNPTransistor:
Silicon NPNTransisror
Sil-icon NPNTransistor
Silicon PNPT::ansistor
Silicon NPN
T::ansistor
Silicon NPNTransisror
Silicon PNP
Transistor
Silicon NPNTransistor
Sil-icon NPNTransistor
POTENTIOMETERS
Balance control
Volume control
Bass control
Trebl-e control
Ri oo od irrc{:

Bass knob (front) ol+3-625
LAMPS
Panel illunlnation #10e4 058-028
Switch indicator #331+ 058-003
MOUNTING
SYS[84
043-234
o43-235
038-u9
d+3-557
ITEMS'
Plastic feet qt{-;:;
Shipping cart
Owners manual
Line cord
Shorting plug
Fuseholder
L29
t
*
7o-o2\
127-001
" L?8-oot
*"f '#
+..-ilfr- ..&
,*
te #1oo
NRK u4,6-
2
R2l+7 L & R aclJust rr+loej
139-013
r39-036
r3e-o5o
139-009
139-008
139-009
139-008
139-009
139-o:.0
139-011
139-009
t\6-o35
148-oo6
uB-012
J-4o-J-u)
148-oo5
1l+8-o06
148-oo6
148-oo6
1l+8-012
148-o05
L53-oo7
t53-oo7
'r
<o-a6 q
R23r,232
R237,238
R239,2+O
R?+9,25o
R301
R3A2,3O3
R307
R308
R311
R3r2
R313
RESISTORS
tilLrewound. 3.5K
hllrewound' .33 ohrns
Wirewound .47 onrns
Winewonnd 22O olvns
WLrewound. 100 ohrns
Wirewound. 220 ohms
Wirewound 100 ohms
WLrewound. 220 ohms
Wtrewound. 7.5 ohns
Winewound. 500 ohms
Wirewound 220 ohns
svfrTclms
Input selector swltch
Compensation swltch
Tape rnonito:: swltch
Mode selecto:: switch
Loudness swltch
LF switch
HF switch
Phase swltch
Speaker switch
Power switch
Ttrermal Cut Out
Thermal Cut Out _
TRANSFORMMS
Power transformer
5w
5w
5w
5w
5w
5lll
,w
j)W
,w
5w
)w
s1
se
s3
s4
s5
s101
st02
s103
s201
s30r
s302
s303
T301
iG
MODULES
Tone contrpl. mod.ule
Compensation module
j
FRONTPANEL A}TDTRIM
trbont panel
F::ont panel end caps
Volume control lcnob
Balance cohtrol knob
Input cont::ol imob
Mod.e
selector lmob
Treble lmob (::ear)
Treble laeob (front)
Bass lo:rob (rear)
130-007
r30-o26
v+)- 1.2
018-120
v+t-22)
v4)-12t
v+)-z2J
o+3-253
090-009
v+)-oz>
090-009
=I
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o
GI
IJ
a
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oa
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