McIntosh MAC 4300V User manual

MAC 4300V
AM/FM RECEIVER
CONTENTS
Section 7 - Control Logic. . .
Remote Receiver
Switching Logic
-f
üüE
trI RFl
ü-Jt t-0 t-.I
rtrt¡
ñÔlÕr Õì rñ
VVVVV 'l^'"
Í( ìt
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l'æ!
læ[
lú!
!"¡
!'l
¡ 03 0
Ir'I
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ooooooo
, l g e"g
lllclnloth MAc43oov REcE¡vEF
Performance Specifications ....2-3
Mechanical Views .3-4
Notes ........5
Block Diagrams - AM/FM Tuner Section...... 5-6
Pre-amp/Ampl if ier Section
Section Locations .........7
Section 1- lnterconnection Diagram .. B-10
AC Line lnout
Front Panel and Trim Parts List ........ 11
lnstallation Hardware Parts List ........ 11
Section 2 - Signal lnput. ..... 11 - 13
lnput Switching
Phono Pre-amp
Tape Switching
Section 3 - Preamplifier.. ....14-17
Volume
Equalizer
Loud ness/Balance
Preamp Muting
Section 4 - PowerAmplifier ...18-20
Driver
Power Outout
Power Guard
Section 5 - AM Tuner. .21 -23
Section 6 - FM Tuner ..24-27
Front End
Multiplex
Program lnput Display
Frequency Display
Section 11 - Tuning Voltage Regulator.....39-41
Signal Display
Status lndicators
lR Sensor
Section 12 - AM/FM Tuning Control ..42-44
Section 13 - Output Processing and
PowerSupply ....45-47
Speaker lmpedance Switching
Speaker Switching
Low Voltage Regulators
Section 14 - Back-up Power Supply ..... 48
Power Relay
Alignment Procedure ......49
Repacking lnstructions..... .....S0
28-33
31-33
Section 8 - Keyboards
Program
Tuner
Function
Section 9 -
Section 10
I nput
34-35
36-38
llltlnfusli s e rv i c e M a n u a I

Performance
Specif ications
AMPLIFIER SECTION FM SECTION
STEREO POWER OUTPUT USABLE SENSITIVITY
100 watts into I ot- 4 ohm loads is the l3dBF which is 1.22uV across 75 ohms
minimum sine wave continuous average
power output per channel, from 20 to 50 dB SUIETING SENSITIVITY
2OrO0OHz, with both channels operating. Mono 17dB which is 2.0uV across 75
onms
POWER BANDWIDTH Stereo 37dBF which is 20uV across 75
20 to 20,000H2 ohms
TOTAL HARMONIC DISTORTION SIGNAL TO NOISE RATIO
O.O2% maximum at any power level from Mono 75dB
25O mi.l.liwatts to rated power per channel , Stereo 70dB
20 lo 20,0OOHz, both channels openating. FRESUENCY RESPONSE
iNTERMODULATION DISTORTION Mono *0, -1.OdB from 20 Io 15kHz
O.O2% maximum at any power level from Stereo +0, -1 .gdB f rom 20 to 'l SkHz
25O milliwatts to rated power per channel,
for any combination of frequencies from 20 HARMoNIC DISTORTION
Io 2O,000H2, with both channels operating. Mono O.Og% at 100H2
O.O8% at lk
FREOUENCY RESPONSE O,12% at 1Ok
+0, -0.5d8 from 20 to 20,0001-lz at rated Stereo O.OB% at 100H2
power. 0.08% at 1k
O.120Á at 10k
INPUT SENSITIViTY
phono z.smv produces rated output INTERMODULATION DISTORTION
Tape, Aux 2S0mV produces rated output Mono o'o8oÁ
Power- Amp 1.5V produces rated output Ster-eo o'120/o
SIGNAL TO NOISE RATIO, A-WEIGHTED CAPTURE RATIO
Power Amp 1OOrJB below rated output 1'5dB
Tape, Aux 90dB below rated output
phono 8OdËt with 10mV input ALTERNATE CHANNEL SELECTIVITY
55dB
MAXIMUM INPUT SIGNAL
Phono 90mV SPURIOUS RESPONSE
High level 9V loodB
INPUT IMPEDANCE IMAGE RESPONSE
Phono 47k ohms, 4TpF SodB
Tape, Aux 30k ohms
power Amp 22k or,m STEREO SEPARATION
45dB at 100H2
DAMpING FACTOR 50dB at 'l k
creater than 40 35dB at 1ok
TAPE OUTPUT SCA REJECTION
Phono 250mV with rated input 65dB
Tape 250mV with rated input
Tuner O.BV at 1OúÁ modulation (FM)
PROGRAM EOUALIZER
t12dB at 30, .150, 500, 1500 and
1 0,000H2
2

AM SECTION
SENSITIVITY
35uV (External Antenna)
SIGNAL TO NOISE RATIO
50dB at 30% modulation
6OdB at lOOoÁ modulation
HARMONIC DISTORTION
O.5% maximum at 3O% modulation,
O.2% typical
FRESUENCY RESPONSE
*O, -6d8, 2OHz Io 4,00OHz
ADJACENT CHANNEL SELECTIVITY
40dB minimum, IHF
IMAGE REJECTION
65dB minimum
IF REJECTION
65dB minimum
GENERAL INFORMATION
SEMICONDUCTOR COMPLEMENT
118 Silicon Diodes
7 Varactor Diodes
41 Light Emitting Diodes
4 Seven Segment LED Display
96 Bipolar Transistors
45 Integrated Circuits
AC POWER OUTLETS
4 Black, switched, l Red, unswitched,
1000 watts, total
POWER REOUIREMENTS
12O volts, 5O/6OHz, 60 to 480 watts
WEIGHT
34.5 pounds (15.6k9) net, 48.5 pounds
(22kg) in shipping carton
lL A ^[----l^
cauTtoN,o*r,û, vi I v
?f'i,íf"!".,,**".^lln
vl Iv
SPEAKEBS 3
CLCB
6lølløllølløllò
lffi
SPEAKEBS 2
CLCR
@lølløllølløl@
ffi
SPEÀKEAS ¡
cLca
llæ
qpllØllØllØlg)
ffi
lllrlnfosh MAc43oov BEcETvEB .@r@"
ñlñr
.v v"
VCFfrAPE OUT,
@t@
roF
@,@
VIOEO SELECTOR
@ï*@
Lo o8
@*"@
@*,@
ro oR
@-@
@#@
L@ @F
@#@
I
loLtrf*l]ol
IIHH¡¡
l-
co
@ @oOo
Fig. 1 Rear view

Mechanical
Views
14'31s"
(36.5 cm)
Fig. 2 Top view
18-e/ro "
(47.1 cm)
6-i/r o "
(15.4 cm)
II
I
5-1lt"
(13.3 cm)
-
:
:
:
:
-
:
:
-
-
:
-
:
æ
-f
!*l o o o o o o o o o E
l.l 3
tút ñ Ã 6 î :
!i¡ il t8 d 9r :
lo!¡ v V Þo ¿ :
lå¡ fllrlnlosh urc¡soov nEcervrn "*^.1,.*
[[E
ïiäffi
Fig. 3 Front view

SECTION 1
PARTS LIST
Symbol Part
No. No.
CAPACITORS
c1,c2 061276
LIGHTING DEVICES
DS1,D52 058101
DS3 058078
FUSES
Fl 089007
178122
RESISTORS
Rl 134427
Descriptlon
CD, .0047uF, 400V, UL/CSA
INC, 12V, 150m4, Festoon
LED, Red, SLP144B
Fuse, SB, 54, 125V, MDL-s
Fuseholder
POT, Tuning
47K
tsv -r5v
Rr5
Rt7
t5v -t5v
t5v -t5v
c2
THERMISTORS
RTf 144151 Thermister, 5 ohm
SWITCHES
Sl,S2 153017 Thermal Switch
ÏRAI,¡SFORMERS
T1
I'IìONT PANEL
f,AR15 LIST
Synrbol
No.
159200 Power Transformer
FLAT.vv
"or^oo.gfl
ANOOE
DS3
AND TRIM
Part Description
No.
1O4O17 Felt Washer, Knob
046A12 Glass, Display
046826 Front Panel
018228 Handle, Front Panel
O9O2O7 Knob, Balance
090218 Knob, Loudness
O9O221 Knob, Equalizer (5)
100119 Machine Screw, #1O x 7/9,
Phtlips (For wood Sides)
01?246 Pushbotton, Black
01?268 Pushbutton, Red
046809 Tuning Knob
030196 Wood Side, Left, Secure W/100119
Screws
030195 Wood Side, Right Secure W/10O119
Screws
Jt2-to
ov
T2 CONÍROL
lOpF
Rt2
-lzv z
Rt3
42V 22tA
Rt4
TAPE 2
lliPur lO,¡¡ F
Ril
220X
INfiI AI,I.AI ¡ON HARDTARE
P^ltI t.t5ï
liynrlrol Part Description ,)e-5
No. No.
1701?4 Cable, 7 Pin Din
'I 70148 FM Dioole Antenna
046823 Hardware Package
017218 Plastic Feet, Secure W/1O0159
Screws
101016 Screw, #1O x 1-1/4, Slotted
(To secure unit to a 1/2" shelf)
101017 Screw, #1O x 1-1/2, Slotted
(To secure unit to a 3/4Í shelf)
100159 Screw, #10 x 3/4, Phillips
(For PlastÍc Feet) Jr2-6
104033 Washer, #10, Flat (For use with
101016 or 101017 Screw)
'r2+t
CONfROL
T t--)2
l'- -r¿v 22il
Signal lnput
R2
l.Rl6
¿¡2-¡2
11

Signal lnput
c0 swrTcH
PC BOARD O468t4
INPUT SWITCHING
TUNER
sw¡TcH
R34
22M
R35
roo
R36
too
TUNER
CONTROL
L Jt-t4
R J t-r5
r,il-6
RzZ
2ZOK
ilo
4:l)JF
R23
22il ¡roNlToR
L J2-I
R ¿2-4
L ¿2.2
R J2-3
¿t2-4
'|5v i
,5y#urz-z
i'* |
-rsvffiJrz-l
'Í'i I
lOr¡ F
Ril
220H-
r2 CONTROL ¡r-r I!2
-tzv izy
T2--,t
f t-+2 Rl4
TAPE I
OUTPUT
-t5v
TAPE 2
I NPUT ., ]NJ8* -.
ov.^.ov I I -Rll
TROL -t2v ;2i
11 12
TAPE 2
OUTPUT

L Jr-t{
R Jr-rô
L I'Jl- ¡
R I'Jl-0
L JI.I
R ,rl.¡t
L J8'T
R\lt.l
INPUT SWITCHING PCB 046814
SECTION 2
PARTS LIST
Symbol Part Descriptlon
No. No.
DIODES
D'f-010 O7OO47 SIG,75V, 150mA, 1N4148
Dl1 070003 Ge, SIG, 45V, 10m4, 1N541
Dl2-D15 070047 SIG, 75V, 150m4, 1N4148
TNTEGRATED CIRCUITS
ICI 133094 Dual Operational Amp, NE5532N
TRAT{SISIORS
o1-017 132193 N, JFET, 2N4392
13

Preampl¡fier
R5
2.2R
PC BOARD 046918
LOUDNESS PC BOARD 046918 EOUALI ZER
@ner
Rr8
470K
ç6ox
r.o["!3ffil lãÃfiffilnc¡ f@nss @nre
GND i,J2-3
MONO \
swtfcH
c4
470
J4
HEADPHONES
R9
4.714 Rt9
470K
R43
680
R38
680
R40
t00K
c25
lO/F
NP
,,? -5
ú2-ô
J2-t
la
lct
VOLUi'E CONTROL
t4t35863tO2
15

PC BOARD 0469t8
EOUALI ZER
lGll-]lncr
R54
oox R57
R22
470K
C4O .Zz
¡ PREAMP
' otf
R PRE OUT - PREAMP
K our
R6¡
rooK
¡ñ6x
I
nzc |IõupNE-Fl
OUTPUT
MUTE
[EIfã¡¡El nss l-ãóElnso lãõïil nco
R4A
6AO
lì.sx-Iilnsr @]aso
C4t t22
R67
4,7M
ct7
.033 6EO
R43
680
R38
680
c50
roo
- r5v
R23 KÐ5 roox
4
-t5v
R5S
c44
R69
470
R62
tooK
c t4
15
cl6
.o33
J2- 4
'16

SECTION 3
PARTS LIST
Symbol
No.
DIODES
D1
D2
INTEGRATED
IC1
tc2
IC3-IC6
tc7
TRAT.ISISTORS
81
02, 05
03, 04
o6
07, gB
RESISTORS
R24, R35
R36, R4l
R46, R51
R56
MISCELLANEOIJS
J4 117340 Headphone Jack
IC1
Part Description
No.
070085 zN, 6.2V, 5%, 500mw, 1N52348
O70O47 SIG, 75V, 150m4, 1N4148
CIRCUITS
133132 CMOS, Volume Control, TC9153P
133094 DuaI Operational Amp, NE5532N
133028 Dual Hi-Speed Operational
Amp, MC4558CP1
133094 Dual Operational Amp, NE5532N
132193 N, JFET, 2N4392
132223 PNP, MPS4126
132223 NPN, MPS4124
132223 NPN, MPS4124
't32222 N, FET, J108
134397 POT, Balance/Loudness
'134316 POT, 100K ohm/100K ohm,
Equalizer
134316 POT, 1OOK ohm/1OOK ohm,
Equalizer
13431 6 POT, 100K ohm/'100K ohm,
Equalizer
Preamplifier
LOUDNESS PCB 046918 A
ffi r50 500 t500
EQUALIZER PCB 046918 B
o2-o6
17

Power
Amplifier
SECTION 4
PARÍS LIST
Symbol Part
No. No.
DIODES
D,I
D2
D3-D8
D9, Dl 0
LIGHT DEPENDENT RESISTORS
LDR'I 144179 LDR. VTLsC9
Description
070085 zN, 6,2V, 5%, 500mw, 1N52348
070098 SIG, 175V, 500mW, FDH400
O7OO47 SIG, 75V, 150mA, 1N4148
070131 RECT, 400V,'tA, 1N4004
ffi l*ru-'
'f{ \
\l
\J.'
82O,821
ANODE
,-4',::::
//
LDRl
Q1 ,83,85,Q7
e9-o11,815,816
TRANSISTORS
01,83 132223
a2 132236
04,06 132235
05 132223
o7,89 132224
oB 132235
o10 132223
01 1 132224
412 132233
o13 132236
814 132234
o15 132223
016 132224
o't 7 132231
418 't32232
o19 132233
o20 132189
o21 132188
rÀ
Y¡II\Ï
./uu
82,84,86
88,81 3
NPN, MPS4124
PNP,254970-BL
NPN, 2SC2240-8L
NPN, MPS41 24
PNP, MPS4126
NPN, 25C2240-BL
NPN, MP54124
PNP, MPS4126
NPN,2SC3423
PNP,2S4970-BL
PNP, 2541360
NPN, MPS4124
PNP, MPS4126
NPN, 25C32988-0
PNP,2S413068-0
NPN, 2SC3423
PNP
NPN
POWER AMPLIFIER PCB 046802 APCB 046802 B
18
81 2,8'1 4,819

*"ffiïo
PC BOARD 046802 A
POWER AMPLIFIER
RI
560
lct
\ tonF
R3
4.7K
! c? 28'7
.* or¡rEn¡¡¿rro, ?
Q4 AMP
3,3K _L cs
-'6v S Rle
CURRE NI
souRcE tl- cs
_5?v 1.,..
,I-4R
,,l-toL
PC BOARD 046802 B
f*
AD.,,UST gIAS
TO 7- TOmVDC
AT NORMAL IDLE
HEAT SINK
TEHPE RATURE
19 20

AM Tuner
+
Î"
BOARD 0468tO
TUNER
J5-t2
rv ^R-21
czt
.2JtF R25
tooK
15 12 13 ll 14 t6 17 lA 19 ?O
47O tlF
IF
INJECTIOI{
il_
ú
.g:l
I
T4
R30
roo
cil
,o47 ct4 .o47 Rr9
roo
Rt7
4.7K
21 22

AM Tuner
^,,m,",,
D1-D5
AM TUNER
PORTION OF
PCB 046811
SECTION 5
PARTS LIST
Symbol Part
No. No.
CAPACITORS
c8, c19 060027
cz:t 060027
DIODES
Dl,D3 O7OO47
D2,D4 O7O125
D5 070125
FILTERS
FNl 180035
TRAI.ISISTORS
o1 132223
a2 132t93
03 132220
84,06 132223
05 't32224
TRANSFORMERS
T1
T2
T3
T4
T5
Description
Trimmer, 2-1OpF
Ìrimmer, 2-1OpF
SIG,75V,150m4,1N4148
vAc, AM, SVC333
vAc, AM, SVC333
Filter, CER, 455kHz
ffi
Q1 ,84-86
ffi
a2
ffi
INTEGRATED CIRCUITS
ICl 133105 Dual Hi-Speed Operational
MC3458Pl
ICz 133145 AM Tuner. MC13041P
Amp
rc1
NPN, MPS4124
N, JFET, 2N4392
P, FET, J176
NPN, MPS4124
PNP, MPS4126
162115 AM Oscillator
162113 AM-IF Matching
'1621'l? AM-RF (Primary)
162116 AM-RF (Secondary)
162113 AM-IF Matchlno
\(Only Seclion 5 Parts Symbol Numbêred)
AM/FM TUNER PCB 046811
rc2 o3 23

FM Tuner
(Only Sect¡on 6 Parts Symbol Numbered)
FM TUNER
PORTION OF
PCB 046811
mm.-'
BEY-fãD
E
E
oooooooooooooo
IC3,IC5
fi
l;l
l-l
.r
@
@
g
@
SECTION 6
PARTS LIST
Symbol
No.
DIODES
Dl JD2
D3
D4
D5-D7
D8
D9, D1 3
FILTERS
FN'l , FN2
FN3, FN4
TNTEGRATED
IC1
rcz
IC3
IC4
ILJ
TRAl'lsISTORS
01 132205
Q2,83 132223
04 132181
05 132224
TRA¡¡SFORMERS
162114
162103
162102
N, MOSFET Dual
NPN, MC4i24
NPN, MPSHt0
PNP, MC4126
FM Mixer
FM Discriminator
FM Discriminator
Gate, MFE521
(Secondary )
( Primary )
Part Description
No.
070003 Ge, SIG, 45V, 10m4, 1N541
o7o122 VAC, Matched, Selected SVC21i
O7OO47 SIG, 75V, 150m4, 1N4148
O7O122 VAC Matched Selected SVC21 1
070130 zN, 8,2V, 5%, 500mW, 1N5237
O7OO47 SIG, 75V, 150m4, 1N4148
18OO24 Filter, CER, 10.64-10.76MH2,
Color Coded, SFE10.7
180028 Filter, LC, Low Pass,
Multiplex
CIRCUITS
133129 RF Mixer, IF, LA1'l 70
133056 MPX-PLL Demodulator,
TCA4500A
133028 DuaI Hi-Speed Openational
Amp, M4558CP1
133110 FM-IF System, L41235
133131 Operational Amp, MC34081P
Q1
T,I
f2
T3
J{\
Flïl
@
P--'-ó;à,. @l-.a'à
f*l-;-ËËË ffiQËl-
ü F--------l ttlt
Æ\ Æ\ .{El^ \Í7
r\fiç3/r+qgr+ I - lALiAr+
HHË'HHWt-ÆHffioY
-{t-ol sP2
AM/FM TUNER PCB 046811
ANODE
@HNffi
catttoDE
D3, D5-7
:#.*,Ë l
, qo r-ræ
ffioð Hæocg
't--:*t---re
H-Ëf 0*m
HusËÞ$oH
H'frHåÆ
AA GÐ.{-ñ,-}
'oHeöH-".-
I2
24
Q4