Denon PMA-300V User manual

D
FE
N
©)
)
|
Hi-Fi
Integrated
Amplifier
L
| SERVICE MANUAL
MODEL
PMA-300V
SOLID-STATE
INTEGRATED AMPLIFIER
we aaerh sess
DENON see aac ceunautene: mann
TABLE OF CONTENTS
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REMOVAL
EACH
SECTION
.........ccccccceccacccucccccvaucvseunvecnaeceeneccuceunns
6
BLOCK DIAGRAM .............2.00- sauce rd Senate Bete as ee ee re eT ee ee ae 7
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PRINTED WIRING BOARD PATTERNS AND PARTS LIST . |
ETC9Q067
POWER
AMP
UNIT
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SCHEMATIC DIAGRAM ......... BP spec eo oe ca tetera oe te he es ach syne ne 13
EXPLODED
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14
NIPPON COLUMBIA CO. LTD.

5 fo ure
SPECIFICATIONS
POWER AMPLIFIER SECTION
), a
Rated
Output
Power:
Both
channel
drives
(TUNER
—
SP
. OUT)
oe
“
60
Watts
minimum
rms
per
channel
nen
(8
ohm
Load)
with
less
than
0.05%
pe} total harmonic distortion from 20 Hz
to 20 kHz.
1 kHz (4 ohm Load) 80 W +80 W
(DIN, T.H.D 1%)
Total
Harmonic
Distortion:
0.008%
(20
Hz
—
20
kHz
at
—3
dB
rated output 8 ohm Load)
input Sensitivity: 150 mV
- Imput Impedance: 30 k ohm
EQUALIZER AMPLIFIER SECTION
Equalizer Amplifier Output:
(REC OUT Terminal)
Rated Output: 150 mV
Input Sensitivity/Input
2.5mV 47kohm
250 uwV S100 ohm
CD, VIDEO-1, VIDEO-2, TUNER/
impedance: PHONO MM
MC
- AUX, TAPE
~ RIAA Deviation: PHONO MM
MC
Maximum input Level: PHONO MM
MC
For United Kingdom model only.
WARNING:
150 mV 30k ohm
within +0.5 dB
(20 Hz — 20 kHz)
(35 Hz — 20 kHz)
160 mV/1 kHz
12 mV/1 kHz
NOTE:
The
following
codes
correspond
to
the
appropriate
models.
E2
for
Europe,
EU
for
U.S.A.,
EA
for
Australia,
EK
for
U.K.
E1
for
Asia
and
EC
for
Canada.
This
Service
Manual
is
prepared
based
on
E2
Black
Version.
As
the
colours
of
the
wires
in
the
mains
lead
of
this
appliance
may
not
correspond
with
the
coloured
markings
identifying
the
terminals
in
your plug proceed as follows:
The
wire
which
is
coloured
blue
must
be
connected
to
the
terminal
which
is
marked
with
the
letter
N
or
coloured
black.
The
wire
which
is
coloured
brown
must
be
connected
to
the
terminal
which
is
marked
with
the
letter
L
or
coloured
red.
The
wire
which
is
coloured
BROWN
must
be
connected
to
the
terminal
which
is
marked
with
the
letter
L
or
coloured
RED.
For Australia model only.
To
ensure
safe
operation
the
three
power
point
which
is
effectiviy
earthed
th
OVERALL CHARACTERISTICS
SN
Ratio
(IHFA
Network):
PHONO
MM
_
86dB
(input
:
ii.
ae
terminals
short-
Be
circuited
for
5.0
mV
rm, input)
MC 68 aB (input
~~~. terminals short-
circuited for 500 MV
input)
TUNER/AUX,
CD,
TAPE,
VIDEO-1,
VIDEO-2
98 dB (input terminals
. short-circuited)
Tone
Control
Adjustable
”
:
Range:
BASS
100
Hz
+8
dB
TREBLE 10 kHz +8 dB
Filtering
Characteristics:
SUBSONIC
16
Hz,
12
dB/oct
Loudness
Characteristics:
Low
frequency
100
Hz+7dB
High frequency 10kHz+6dB
AC OUTLET:
(For U.S.A., Canada and
Asia)
SWITCHED
x
2,
100
W
(Total)
|
UNSWITCHED
x
1,250
W
POWER
SOURCE:
Germany
and
France
AC
220
V,
50
Hz
U.K. and Australia AC 240 V, 50 Hz
U.S.A. and Canada AC 120 V,60 Hz
Asia 110/120/220/240 V, 50/60 Hz (
(Multipie) | ;
POWER
CONSUMPTION:
115
W
(U.S.A-.);
120
W
(IEC);
115 W (Multiple) 2.2 A (CSA)
DIMENSIONS: 434 mm (17-3/32")W x 112 mm
(4-13/32",)H x 281 mm (11-1/16")D
(including rubber feet, contro! knobs,
and terminals.)
WEIGHT:
5.8
kg
(12
Ibs
13
oz)
Design
and
specifications
are
subject
to
change
without
prior
notice.
IMPORTANT
The
wires
in
this
mains
lead
are
coloured
in
accordance
with
the
fol-
lowing
code:
Blue: Neutral
Brown: Live
FOR YOUR SAFETY
-pin
plug
supplied
must
be
inserted
only
into
a
standard
three-pin
rough
the
normal
husehold
wiring.
Extension
cords
used
with
the
equipment
must
be
three-core
and
be
correctly
wired
to
provide
connection
to
earth.
Wrongly
wired
extensio
The
fact
that
the
equipment
operates
that
the
installation
is
completely
safe.
Fo
power
point,
consult
a
qualified
electrician.
n
cords
are
a
major
cause
of
fatalities.
satisfactorily
does
not
imply
that
the
power
point
is
earthed
and
r
your
safety,
if
in
any
doubt
about
the
effective
earthing
of
the
For U.S.A. and Canada models.
CORD,
RECEPTACLE
OR
OTHER
OUTLE
PREVENT
BLADE
EXPOSURE,
CAUTION
TO
PREVENT
ELECTRIC
SHOCK
DO
NOT
USE
THIS
(POLARIZED)
PLUG
WITH
AN
EXTENSION
T
UNLESS
THE
BLADES
CAN
BE
FULLY
INSERTED
TO

LASSE eR eA RT Oe ae a aE NSS TE Ne Ba a SO PMA-300V
NAMES AND FUNCTIONS OF PARTS
DE ON Preceunn euthe Component pir mein empties
POWER (Power switch) ;
INPUT SELECTOR (Input signal selection button)
® CD, © PHONO, @ TUNER, ® AUX/VIDEO 1,
® AUX/VIDEO 2
VOLUME (Adjustment of the volume)
TAPE MONITOR/COPY (Tape monitor/Copy switch)
PHONES (Headphone Jack)
SPEAKERS (Speaker selection switch)
@A,@8B («on, Loff)
QOOHO 00
Video Input Function
QO@O@EYX
Fig. 1
BASS (Regulation of low notes) _
TREBLE (Regulation of high notes)
BALANCE (Balance adjustment)
SUBSONIC (Subsonic filter button).
LOUDNESS (Loudness button)
CARTRIDGE (Cartridge changeable switch)
(Back Panel Side)
@ MM, @ MC.
The PMA-300V provides a video input function. The image selection circuitry gives preference to
VIDEO-1 for all settings of the INPUT SELECTOR button, unless VIDEO-2 has been specified.
This function might be used, for example, to watch a TV monitor while playing a compact disc.
In this case it would connect the image input circuitry of the VIDEO-1 terminal to the image output
of a video recorder, tape recorder, or video disc recorder. The resultant monitor out signal would be
sent to the TV monitor, for “background video’ audio-visual entertainment combining sound and
images.
os /
i
|
I
‘
stgereane Sangeet A os ane met sEetaret Sette NERA #4.

PpvMia-3sooVv
CONNECTIONS
SPEAKER SYSTEM {A}
TURNTABLE
>
(FOR MC, MM}
SPEAKER SYSTEM (8)
(2 aoa
aD |
Cue SHOCK HAZARG - DO NOT OPE
RISQUE DE CHOE - NE PAS ENLEVER
DENON PMA. 300
220 an
onus Herein SEAKER SYSTENS
220y SOM
w
- a ah
These
specifications
are
tor
the
European
model.
7
og?
Speaker Impedance
£17 ntetner ep ncaa See
ie
Ae tke Re eee deg:
a,
xe
2
3
AC
OUTLET
s
af
|.
|{¢
@
When
the
A
and
B
terminal
sets
are
to
be
used
5
2
58
{2
separately,
the
speakers
that
are
to
be
con-
»
wil
12
nected
should
have
an
impedance
of
6
to
16
=
Sb
tree
ohms,
_
;
:
e@
When
the
two.terminal
sets
(A
+
B)
are
to
be
-
used
at
the
same
time,
use
of
speakers
whose
i
|
impedance
is
outside
the
range
from
12
to
16
|
ohms
will
result
in
malfunction.
Be
careful
not
|
|
to
let
this
happen.
TES
O
pene
—
wee
Bewapwsern
0
°
|
VIDEO
DECK
2
(Sound
out)
TAPE
DECK
1
TAPE
DECK
2
Me
Fig.
2
Connection
to
the
Speaker
System
ae
Connect
the
speaker
system
for
the
left
channel
(the
left
side
as
viewed
facing
the
front)
to
the
L
speaker
terminal
on
the
back
panel,
and
the
speaker
system
for
the
right
channel
to
the
R
terminal.
@
When
connecting
the
speaker
terminals
to
the
speaker
systems,
make
certain
to
connect
the
polarities
correctly
(+
to
+
and
—
to
—).
@
During
connection,
be
careful
that
the
inner
wires
in
the
speaker
cords
do
not
protrude
from
the
termi-
nals
to
contact
any
other
terminal,
and
that
the
inner-wires
in
the
separate
speaker
cords
do
not
contact
each
other.
|
“RIGHT
SPEAKER
LEPt
SPEAKeD
Connecting
the
speaker
Cords
SPEAKER
SYSTEMS
Aor
8
6
~16
che/SPEAKER
Ao
0
oe
el
PU
Lift
the
lock
piece
on
the
termi-
.
nal
to
its
upright
position
and
;
insert
the
cord.
Then
set
the
lock.
é
—4—

———es
___
ss.
PMA-300vV
BE
METHOD
OF
ADJUSTMENTS
When
marking
adjustments,
be
sure
the
power
supply
is
at
the
rated
voltage
and
the
room
air
is
in
normal
condition
With
respect
to
temperature
and
humidity.
|
|
IDLE
CURRENT
ADJUSTMENT
(Fig.
3)
|
1.
Keep
the
unit
away
from
direct
wind
blown
by
an
air-conditioner
and
an
electric
fan,
and
keep
the
unit
under
normal
conditions.
Adjust
the
range
of
ambient
temperature
to
15:30
C.
2.
Set
the
following
switches
as
follows:
@®
POWER
(power
switch)
to
off
e@
VOLUME
(VOLUME
CONTROL)
to0(
f)
)
e
SPEAKERS
(speaker
terminal)
to
no
load
(speakers
disconnected)
7
3.
Remove
the
top
cover
and
connect
a
DC
digital
voltmeter
to
the
test
points
of
ETC9067
(Power
Amp
units)
(between
the
positive
terminal
TP
@
(R89)
and
the
negative
terminal
TP
©
(R91),
and
between
the
positive
TP
@
ree)
and
the.
negative
terminal
TP
©
(R92)).
4.
(1)
Connect
Power
cord
to
AC
outlet,
and
turn
Power
Switch
“on”
(m=).
Within
10
seconds
turn
VR5
(Leh)
and
VR6
(Rch)
clockwise
so
that
the
DC
voltmeter
reads
2.0
+0.1
mVDC
:
(2)
Then
after
5
minutes
warmup
adjust
VR5
and
VR6
so
that
the
DC
Voltmeter
reads
5+0.5mvV
(3)
And
after
15
minutes
warmup
adjust
VR5
and
VR6
so
that
the
DC
Voltmeter
reads
8t3mvV
Front Panel Side
Fig. 3

Js Gent maaan ot Pee ri awaiorriont ve,
install. the covers.
Sa arntn Bess
PO TCEL OPA PES SUSE LS BEES IS
2S Howto remove top caver=( :
42,1) Remove the six screws
2) Pull. out the’ sides. of t . the
4
a
Ee:
.
“Tapping
Screw
,
;
-
:
Ax8
-
«2,
How
to:remove
the
back
panel
(Fig.
5)°
2°?
=
|
“iugits:’ 1) Remove the fourteen screws hdlding: the. |
=. panelplace. oo ee |
2) Pull the back panel.toward you and remove it: |
3. How to remove the front panel (Fig. 6)
1) Pull off the five knobs.
2) Remove the five screws holding the front panel
in place.
3) Pull the front panel toward you and remove it.
8, Fig. 6
Pe Tree eS On ale Ed

BLOCK DIAGRAM
Se
He
H
MM-Mc-— —-FS_AMP INPUT POWER AMP _
SELECTOR| LELECTOR TAPE SUBSONIC BALANCE | RELAY — sprayer
. | "MONITOR VOLUME "7 Cowiten
t
rHonoo— +} a> 2-1 fa ne te SPEAKER -A
Pir
_||
et
1 TeQ-pRiaa - SPEAKER -B
F
rage
te
TONE
CONTROL
)
cb
oO
nee
OTHER
CH,
HEAD
PHONES
acne
BASS
TREBLE
AUX/
VIDEO-1 ©
AUX/
a
VIDEO-20
i PB O
TAPE-|
L REC O -50V E +50V
: om
P.BO H
TAPE-2 ey s
+ RECO E eS TO AC LINE
>
©
bi}
e
—15V
Fig. 7
SEMICONDUCTORS
e TRANSISTORS (Including FET)
2SB647A(C)
28C1815(BL)
2S8A1015(Y) 2SD667A(C)
2SC2878(A/B)
2SA988(E/F)
28C1841(E/F)
B
(Base)
B
(Base)
C
(Collector)
C
(Collector)
E (Emitter) E (Emitter)
e DIODES (Including Zener, LED)
HZ16-2
~ | HZ24-2
Navy blue
SEL1121R (Red)
long short
(Anode) (Cathode)
»?
18$133
—}~
Yellow
1$2076A
me ie
Navy blue
-@ IC's
2SA1104(0)/(Y)
28C2579(0)/(Y) TC9152P (Toshiba)
M5218P (Mitsubishi)
M5220P (Mitsubishi)
“~E (Emitter)
C (Collector)
B (Base)
SELs
SIG-Bi
S 1G-Bz
SIG-Bs
SIG-Be
SIG-Bs
COM-B
D5FB20
+ nt -
|
PMA-300V mL
s
»
rere nt oes ee on +
Og ise sca 4 ’

ey ne hehe yele
het Sagege .
é.3¢,; SZ PMA-3200V
ae Sd
aes
TC9152P
(Toshiba)
|
|
FUNCTION
OF
EACH
TERMINAL
pe
SYMBOL
FUNCTION
REMARKS
|
INH
Inhibit
input
terminal.
|
Normal
operation
at
‘‘H”
level,
inhibit
operation
at
“L”
level.
|
|
=
ai
C.R
connecting
terminal
for
oscillator.
|
:
4
¢
aa .
en
eee ets,
er Sa er eer er Sa
ae reese eegea ad, ¢ eee
BB eg Meee ae ES URN os oF Mates Seg gt
en or . few ’ a ee Sd ve £ . e
7 rar cers ar eC. Scorer) Sr ear ’ - os
is. a woe Of twee vee. Ue, Tee
. cee ‘ ove eetes te wet see
Feo meena ace meee meta As te pee ek.
R
With this oscillation frequency, muting time and
switching time of analog will be set.
Vss1
ALL- Specified OFF input terminal of all analog switches.
OFF Applying ‘’H” level to turn off all analog switches. (4) —[>o
.
|
a
Schmitt
trigger
input
es
MUTE
Output
terminal
of
muting
signal.
ae
ae
;
By
receiving
of
“‘H”’
level
at
select
input
terminals
|
(SEL-1
~
SEL-5),
this
terminal
becomes
“‘H”
level
Z
,
for
settled
time
and
within
this
time
analog
switch
So
|
|
will
shift.
|
23 SEL-1 Select input terminals for respective analog switches.
22 SEL-2 Turn SEL-1 ~ SEL-5 terminals to ’’H” level to turn
21
SEL-3
on
respective
analog
switches.
|
.
| 20 | SEL-4 | SEL-1 ~ SEL-5 are all reciprocal reset. | |
19
|
SEL-5
These
terminals
are
in
conjunction
with
driver
outpu
1/O terminals.
6/18 Signal input terminal 1. |
select SEL-1 to turn on analog switch 1 and this
terminal will conduct to COM terminal.
SIG-A,
SIG-B,
7/17 SIG-A,
SIG-B2
Signal input terminal 2.
Select SEL-2 to turn on analog switch 2 and this
terminal will conduct to COM terminal.
Analog switch
8/16 SIG-A3
SIG-B3
Signal input terminal 3.
Select SEL-3 to turn on analog switch 3 and this
terminal will conduct to COM terminal.
9/15 SIG-Ay
SIG-B,
Signal input terminal 4.
Select SEL-4 to turn on analog switch 4 and this
terminal will conduct to COM terminal.
10/14 SIG-A;
SIG-B;
Signal input terminal 5.
select SEL-5 to turn on analog switch 5 and this
terminal will conduct to COM terminal.
COM-A
Common
terminal
for
analog
switches.
COM-B
11/13
24
VDD
Power
supply
voltage
applying
terminal.
1
Vso4
For
control
system
Vpp-Vss,
.
12
Ves2
|
For
analog
switch
system
Vpp-Vss9
.

PMA-300V ma
°RINTED
WIRING
BOARD
PATTERNS
AND
PARTS
LIST
=TC9067
POWER
AMP
UNIT
PARTS
LIST
for
E2
noe
|
PartNo.
|
Part
Name
&
Descriptions
Part
Name
&
Descriptions
SEMICONDUCTORS
CAPACITORS
1cCoO1
|
2630317006
|
M-5220P
IC
(MITSUBISHI)
C001,
|
2533631009
|
150pF
+5%
50V
CERAMIC
ICOO2
|
2630257001
| M-5218P
IC
(MITSUBISHI)
002
ICo03
|
2620581004
|
TC9152P
IC
(TOSHIBA)
C003,
|
2544132005
|
10uF
16V.
ELECTROLYTIC
TROO1
|
2730198015
|
2SC1815(BL)
TRANSISTOR
004
TROO2
| 2710102005
|
2SA1015(Y)
TRANSISTOR
COO5,
|
2544161050
|
1000uF
+20%
6.3V
ELECTROLYTIC
TROO3
|
2730198015
|
2SC1815(BL)
TRANSISTOR
006
TROO4,| 2730253015
| 2SC2878(A/B)
TRANSISTOR
pe 2551122011
| 0.056uF
+5%
5OV
PLASTIC
FILM
005
8)
TROO7,}
2710131021
|
2SA988(E/F)
TRANSISTOR
eee 2551121041
|
0.015uF
+5%
50V
PLASTIC
FILM
008
1
TROOY,|
2730235020
|
28C1841(E/F)
TRANSISTOR
a
2531055014
|
560pF
+10%
50V
CERAMIC
010
01
TRO11,}|
2710131021
| 2SA988(E/F)
TRANSISTOR
C013,
|
2544132005
|
10uF
16V
ELECTROLYTIC
012
014
TRO13,|
2730235020
|
25C1841(E/F)
TRANSISTOR
C015,
|
2531024003
|
O.0ipF
+80,—-20%50V
CERAMIC
014
016
|
“TRO15,|
2730198015
|
2SC1815(BL)
TRANSISTOR
CO17,
|
2544146004
|
ipnF
SOV
ELECTROLYTIC
016
018
-TRO17,|
2720053005
|
2SB647A(C)
TRANSISTOR
C019
2531004007
1000pF
+10%
50V
CERAMIC
018
:
C020
| 2531024003
|
0.0iuF
+80,-20%50V
CERAMIC
_TRO19,|
2740060007
|
2SD667A(C)
TRANSISTOR
~022
“920
|
|
C023 |
2544146004
|
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|
2544146004
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| 2710102005
|
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2549014018
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|
2730253015
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2730198015
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2720053005
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TRO31
| 2740060007
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2SD667A(C)
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2531004007
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1000pF
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|
2730198015
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C063 | 2533619005 | 47pF +5% 5OV CERAMIC
~066
C067, | 2531024003 | 0.01uF +80,-20%50V CERAMIC
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C083, | 2551074004 | 0.015uF +10% 50V PLASTIC FILM
084
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C087, | 2531009002 | 6800pF +10% 50V CERAMIC
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2531008003
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