Marantz 74 EQ515 - Page 10

TABLE OF CONTENTS
SECTION
PAGE
INFRODUCTION
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cael
ha
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Re
ban
teal
Sty
ace
here
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ae
Bole
lactate
engi
ae™
1
1.
SHOCK,
FIRE
HAZARD
SERVICE
TEST
.........
2c
cece
eee
ee
eee
eee
eens
1
2.
PW.
BOARDS
sees
bon
6S
hail
oye
wk
VRS
esa
e
ieee
eee
WERE
DROSS
CATT
See
1
3.
VOLTAGE
CONVERSION
...........
iakaeidade
nara
dikes
cloud
Rie
aitetae!
2
A.
CIRCUIT
DESCRIPTION
....
0.2...
eee
eee
etree
teens
Hated
Wadia
4
alate
2
MOS
TCS5064BP
(QLO7,
QLO8).........-.---
pichAyy
ae
apie
ne
ap
Rae
ESR
aT
pete
eee
2
MOS
4514
(QLO6)
........---
0c
eee
eee
Pd
sbeos
de
Gb
deal
sch
oe
Atiguigs
tn
Sieky
Avtar
aula
a
Seton
atiarre
@abteier
ae
Seater
hae
nga
Me
3
5.
BLOCK
DIAGRAM
..........-
0.
eee
eect
eee
eet
ete
rennet
crenata
re
enraree
4
6.
SCHEMATIC
DIAGRAM
AND
COMPONENT
LOCATIONS
.......--
2.
eee
eee
ees
5
6.1
Input
Switch
Assembly
(PS15)
Schematic
Diagram
and
Component
Locations
........-+
e002
ee
erree
5
6.2
Display
Switch
Assembly
(PS25)
Schematic
Diagram
and
Component
Locations
......-.-.++-
0020005
5
6.3
Mic
Amp.
Assembly
(PV15)
Schematic
Diagram
and
Component
Locations...
.......
26+ eee
eee
eee
6
6.4
Power
Switch
Assembly
(PS35)
Schematic
Diagram
and
Component
Locations
.........
000+
0
ete
e
eee
7
6.5
Bar
Drive/Volume
Assembly
(PR15)
Schematic
Diagram
and
Component
Locations
........+--e0+e+85%
7
6.6
Main
Assembly
(PE15)
Schematic
Diagram
and
Component
Locations
...
0...
0...
eee
ees
.,
8
6.7
FL
Set
Assembly
(PR25)
Schematic
Diagram
and
Component
Locations...
.....-
66+
++
see
ee
eee
eens
10
7.
TECHNICAL
SPECIFICATIONS
.......
00.
c
cee
eee
ee
ee
eee
eee
11
8.
EXPLODED
VIEW
AND
PARTS
LIST
........-.0
2-200
e
eee
ee
ee
eet
teeter
eee
12
9.
ELECTRICAL
PARTS
LIST
.......
2.
eee
eect
eee
elect
tere
eee
eee
nnn
n
en
nnee
as
14
10.
SCHEMATIC
DIAGRAM
.........--2-
0s
eee
erence
teeter
n
eters
renee
16
Sec
SBC
DERC
DR
DER
DER
TRRE
HRCTRRRCSRE
E
E
S
h
How to use this service manual
e The “Common parts’’ which Marantz Japan, Inc. has established are eliminated from this
service manual.
e
These
‘Common
parts”
are
applied
to
all
models
in
the
service
manuals
arranged
and
issued
by
MJI.
e
To
indicate
clearly
the
common
parts
in
the
schematic
diagram,
a
line
is
drawn
above
or
under
the
Ref.
Desig.
No.
of
applicable
parts.
e “Common parts” can be supplied from the Marantz service center as ever.
In
case
of
ordering,
please
establish
the
parts
number
of
10
figures
following
the
procedure
mentioned
in
this
service
manual
‘‘How
to
establish
the
parts
number
for
common
parts”.
(NOTE)
When
you
order
parts
to
the
Marantz
parts
center,
please
take
notice
of
the
following
points.
1) Please correctly write the parts number of 10 figures following the rule.
2) Since ordering parts by the Ref. Desig. No. or ratings indicated in the schematic diagram
does
not
satisfy
the
above
conditions,
the
Marantz
parts
supply
system
does
not
work
properly.
As this case is apt to cause a trouble, please pay attention to it.
BCR DER RS DR BCE ER DER DRC DE BC SE ER SS ST ER SES
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