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Denon PMA-830 User manual

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[)
EF
N
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Hi-Fi
Component
Ampiifier
SERVICE
MANUAL
MODEL
PMA-830
|
SOLID
STATE
STEREO
INTEGRATED
AMPLIFIER
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COLUMBIA
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PMA-830
ee
ree
TABLE
OF
CONTENTS
SPECIFICATIONS
Gaixtacte
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ew
Go
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BOC
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se
eee
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a
os
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ora
oe
are
2
EXPLODED
VIEW
OF
CHASSIS
AND
CABINET
PRONG
ODE
=
ec
care
ten
ed
Seale
es
Bete
eed
eee
et
eee
ea
ee
ees
3
PACK
USI
DE
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ean
nd
a
deen
eae
tea
eeedocaus
4
METHOD
OF
ADIUSTMENTS
soiree
scr
ia
ead
eck
oeee
nee
ecdewd
eee
oeueetues
5
PRINTED
CIRCUIT
BOARD
PATTERNS
AND
PARTS
LIST
INPUT
TERMINAL
UNIT
SE
O2y
<c
Sa
ne
6
CONTROL
(A)
UNIT
$
MENG
2508
atoning
Aeneas
ae
ese
e
6
CONTROL
(B)
UNIT
E162
siete
hes
tabs
ee
es
9
POWER
SOURCE
AND
PROTECTOR
UNIT
ETC-280........
0.000
cece
eee
eee
eee
10
POWER
AMP
UNIT
BUX
0205.35
226
deve
Sulnne
enous
enn
butnts
11
WIRING
DIAGRAM
«4
2.02453,
peeaw
as
ce
cadn
deren
dade
ich
one
Posie
sees
s
14
en
OV
A-S30
ml
SPECIFICATIONS
MAIN
AMPLIFIER
SECTION
Type:
All
stages
pure
complementaly
push-pull
system
DC
circuit
Rated
Output
(both
channels
driven)
20
Hz
to
20
kHz
(at
8
ohm)
Class
B
operation:
Class
A
operation:
65
W
at
each
channel
(T.H.D.
0.01%)
15
W
at
each
channel!
(T.H.D.
0.005%)
1
kHz
(at
4
ohm,
T.H.D.
0.02%)
Class
B
operation:
Total
Harmonic
Distortion
Class
B
operation:
Class
A
operation:
{intermodulation
Distortion
60
H2/7
kHz
=
4/1:
Power
Bandwidth
Class
B
operation:
Class
A
operation:
Transmission
Characteristic:
Input
Sensitivity
:
Input
impedance:
Output
Impedance:
Signal
to
Noise
Ratio:
Output
Terminals
Speaker:
Headphone:
90
W
at
each
channel
less
than
0.01%
less
than
0.005%
less
than
0.01%
(at
equivalent
rated
output)
less
than
0.01%
{at
1
watt
output)
5
Hz
to
80
kHz
(IHF,
T.H.D.
0.05%)
5
Hz
to
100
kHz
(IHF,
T.H.D.
0.05%)
DC
to
100
kHz
“0
dB
(at
1
watt
output}
1
volt
r.m.s.
50
k
ohm
less
than
0.16
ohm
122
dB
A
&
B,
4to
16
ohm
Joad
A+8B,8
to
16
ohm
load
for
Stereo
Headphone
PRE
AMPLIFIER
SECTION
Pre
Amplifier
Output
Max.
Output:
Rated
Output:
Total
Harmonic
25
V
1V
Distortion:
0.003%
{at
3
V
output)
Equalizer
Amplifier
Output
Max.
Output:
25
V
(T.H.D.
0.01%
at
50
k
ohm
load)
Rated
Output:
320
mV
Input
Sensitivity/input
Impedance
Phono-1,
2:
2.5
mV
/50k
ohm
Tuner:
320
mV
/40
k
ohm
Aux.
Tape:
320
mV
/
40
k
ohm
Maximum
Allowable
Input
Phono:
200
mV
1
kHz
RIAA
Deviation:
less
than
+0.2
dB
(20
Hz
to
20
kHz)
Signal
to
Noise
Ratio
(IHF.
A
network)
Phono:
better
than
90
dB
{input
terminal
shorted}
Tuner,
Tape,
Aux:
better
than
105
dB
(input
terminal!
shorted)
Aux
—
Pre
Out
Frequency
Response
5
Hz
to
100
kHz
~
Tone
Control
Section
Variable
Range
100
Hz
+8
dB
10
kHz
+8
dB
0
,
28
Tone
Defeat:
Bass:
Treble:
Filter
Characteristic
20
Hz,
—6
dB/oct
Loudness
Control
Characteristic
100
Hz+7
dB
10
kHz2+6dB
AC
220V,
50
Hz
440
W
(at
max.
output
power)
Subsonic:
Low
range:
High
range:
Power
Source:
Power
Consumption:
Dimensions:
434
(W)
x
164
(H)
x
400
(D)
mm
17-5/64"
(W)
x
6-29/64”"
(H)
x
15-3/4"
(D)
Weight:
16
kg,
35.3
Ibs
These
contents
are
subject
to
alteration
without
prior
notice.
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PM
A-830
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PMA-830
mm
EXPLODED
VIEW
OF
CHASSIS
AND
CABINET
FRONT
SIDE
mum
PM
A-830
BACK
SIDE
—~5—
eae
OV
A-S30
a
CHASSIS
AND
CABINET
GROUP
PARTS
LIST
Part
Name
&
Descriptions
Part
Name
&
Descriptions
477006411
07
|
FIXING
SCREW
4110145204
|
CONTROL
BRACKET
(A)
;
4730353
TAPPING
SCREW
3
x
6
(2)
=
4610061121
|
RUBBER
SHEET
3
4110148502
|
SIDE
CHASSIS
59
2740037014
|
2SD427
(R)
or
(O)
TRANSISTOR
4
4140114205
|
SHIELD
COVER
60
4120372106
|
RADIATOR
BRACKET
(A)
5
4610074176
|
BLIND
61
4711809033
|
CROSS
PEN
SCREW
3
x
18
6
2120119002
|
SPEAKER
SWITCH
62
4753001051
|
3
TOOTH
WASHER
i
2558001007
|
OIL
CAPACITOR
0.01uF
63
2720024005
|
2S8557
(0)
TRANSISTOR
8
3930032019
|
PILOT
LAMP
6.3V
0.15A
64
INSULATING
SHEET
g
2124122008
|
POWER
SWITCH
65
4170077105
|
POWER
RADIATOR
10
4110144409
|
FRONT
CHASSIS
66
4120373105
|
RADIATOR
BRACKET
(B}
11
— —
67
MD-4232
WIRE
CLIP
12
_
—
68
4110147309
|
MAIN
CHASSIS
13
ADHESIVE
TAPE
69
2546031007
|
6800uF
50
V
CAPACITOR
14
BLIND
70
2050095102
|
EARTH
PLATE
15
4730354035
|
TAPPING
SCREW3x8
71
2P
CONNECTOR
16
1440375103
|
FRONT
PANEL
ASS.
72
4450020005
|
CORD
BUSH
17
1120161006
|
KNOB
ASS.
73
2062016001
|
AC
CORD
18
BLIND
SHEET
74
4610061118
|
RUBBER
SHEET
19
_
—
75
1050294001
|
BACK
PANEL
20
4711304033
|
CROSS
PAN
SCREW
3
x8
76
2070002007
|
TRANSISTOR
SOCKET
21 11
mm
NUT
ie;
PUX-020L
POWER
AMPLIFIER
UNIT
(L)
22
2048011101
|
HEAD
PHONE
JACK
78
3P
CONNECTOR
CORD
23
4110146106
|
CONTROL
BRACKET
(B)
73
—
—
24
1120160007
|
KNOB
ASS.
80
4140113002
|
INPUT
BRACKET
25
1120162209
|
KNOB
ASS.
81
ETC-143
INPUT
TERMINAL
UNIT
26
1120166108
|
LEVER
KNOB
82
— —
27
1430041007
|
PILOT
LENS
83
2020012005
|
FUSE
HOLDER
28
SC-1162
SPECIAL
SCREW
84
2061015087
|
FUSE
4.0A
TIME
LAG
29
1020063440
|
TOP
COVER
85
_
-
30
1220007057
|
SPACER
86
2335127009
|
POWER
TRANSFORMER
31
ETC-259B
CONTROL
(A)
UNIT
87
2050003000
|
3
T
LUG
TERMINAL
32
—
—
88
4752006002
|
6
mmS
WASHER
33
2110161109
|
100
k
ohm
x
2
POTENTIOMETER
89
4756012005
|
6
mm
NUT
34
2110162001
|
100
k
ohm
x
2
POTENTIOMETER
90
ETC-280
POWER
SOURCE
&
PROTECTOR
UNIT
35
2120114007
|
ROTARY
SWITCH
91
1P
CONNECTOR
ASS.
36
2120115019
|
FUNCTION
SWITCH
92
4P
CONNECTOR
CORD
37
2120127007
|
FUNCTION
SWITCH
93 3P
CONNECTOR
CORD
38
2110160100
|
50
k
ohm
x
2
POTENTIOMETER
94
2038004005
|
5P
CONNECTOR
CORD
39
8
mm
NUT
95
3P
CONNECTOR
CORD
40
7mm
NUT
96
2050070004
|
8P
TERMINAL
41
7mm
TOOTH
WASHER
97
2056037005
|
SHORT
PIN
42
9
mm
NUT
98
4770088002
|
4.1
mm
WASHER
43
9
mm
TOOTH
WASHER
99
2050043109
|
GND
TERMINAL
44
1050188405
|
BOTTOM
COVER
100
_
—
45
2124110007
|
LEVER
SWITCH
101
4140057207
|
BOARD
BRACKET
46
2120118003
|
ROTARY
SWITCH
102
2036043000
|
4P
CONNECTOR
BASE
47
2120117004
|
ROTARY
SWITCH
103
—
2034093052
|
3P
CONNECTOR
CORD
48
2124110010
|
LEVER
SWITCH
104
PUX020R
POWER
AMP
UNIT
(R)
49
2110163107
|
100
k
ohm
x
2
POTENTIOMETER
105
= a
50
4700009006
|
CROSS
PAN
SCREW3
x6
106
=
=
51
4P
CONNECTION
CORD
107
a
-_
52
ETC-277
CONTROL
(B)
UNIT
108
2030014048
|
1P
CONNECTOR
ASS.
53
1120163208
|
KNOB
ASS.
109
MD-5271
P.C.B.
SUPPORT
54
1040040003
|
FOOT
110
MD-4368
WIRE
CLIP
55
4730456014
|
TOPPING
SCREW
4
x
12
(2)
111
4753100004
|
4
mm
TOOTH
WASHER
a
56
7mm
NUT
112
4770006004
|
4mm
NUT
4410316005
|
DIN
PLATE
Sa
NS
Ot
abe
Beate,
SU
tl
it
A a
mu
PMA-S30
METHOD
OF
ADJUSTMENTS
DC
VOLTMETER
DC
VOLTMETER
L-CHANNEL
DS
{DIODE}
TRIZ0
(TRANSISTOR)
CONTACT
WITH
DIODE
AND
TRANSISTOR
VR5
VR3
(VR
6)
(VR
4)
R-CANNEEL
TR
13,D9
{TR
14,
D
10)
SYSTEM-A
=
210
TEST
POINT
SYSTEM-B
meee
PUX-020
POWER
AMP.
UNIT
SPEAKER
TERMINALS
DATA
FOR
ADJUSTMENTS
1.
Confirm
that
forming
has
been
effected
as
shown
in
the
drawing
for
D9
and
TR13,
and
D10
and
TR14,
respectively
of
the
L-
and
R-channels.
(PU
X-020)
2.
The
amplifier
switchs
should
be
set
as
follows:
(1)
SPEAKERS
switchs
to
“A”
system.
(2)
VOLUME
to
minimum
position.
(3)
DIRECT
COUPLE
to
OFF.
(4)
POWER
switch
to
OFF.
(5)
OPERATION
switch
to
“B”
position.
(6)
Confirm
that
a
U-sharped
short
pin
is
inserted
between
the
PRE-OUT
and
MAIN-IN
terminals.
3.
{1}
Connect
a
D.C.
voltmeter
to
the
SYSTEM-A
terminal.
(2)
Connect
a
D.C.
voltmeter
to
the
test
points
of
both
the
L-
and
R-channels
of
the
PUX-020.
Special
attention
should
be
paid
here
with
regard
to
the
polarities
of
the
test
point
voltages:
make
sure
that
16
is
—
and
17
+
for
the
L-chan-
nel,
and
that
35
is
—
and
36
+
for
the
R-channel.
4.(1)
After
setting
the
voltage
regulator
to
0
V,
switch
the
amplifier’'s
power
switch
on.
(2)
While
ovserving
the
indication
of
the
D.C.
voltmeter,
raise
the
power
supply
voltage
from
zero
to
the
rated
voltage
by
using
the
voltage
regulator,
and
carry
out
the
preliminary
adjustments
of
(3)
and
(4)
in
a
swift
manner.
(3)
By
adjusting
VR1
(L-channel)
and
VR2
(R-channel)
of
the
PUX-020,
regulate
the
speaker
terminal
voltage
to
the
ih
range
of
OV
+10
mV.
(4k
By
adjusting
VR5
(L-channel)
and
VR6
(R-channel)
of
the
PUX-020,
regulate
the
rest
point
voltages
to
12
mV
(10
to
14
mV)
[Collector
current
to
26
mA
(22
to
30
mA)].
5.
(1)
On
completion
of
the
preliminary
adjustments
described
above,
carry
out
the
main
adjustments
described
below.
(2)
“
By
adjusting
VR1
(L-channel)
and
VR2
(R-channel),
adjust
the
speaker
terminal
voltage
again
so
that
it
will
be
in
the
range
of
OV
+10
mV.
|
(3)
“Adjust
VR5
(L-channel)
and
VR6
(R-channel)
again,
regulating
the
test
point
voltage
to
17
mV_+1
mV
(Collector
current
to
26
mA
+2
mA).
(4)
With
the
above
adjustments,
the
speaker
terminal
voltage
adjustment
and
idling
current
adjustment
for
B-class
operations
have
been
completed.
6.
(1)
Change
over
the
OPERATION
switch
to
Class
A.
(2)
By
adjusting
VR3
(L-channel)
and
VR4
(R-channel)
of
the
PUX-020,
carry
out
adjustment
of
the
test
point
voltage,
regulating
it
to
470
mV
+10
mV
(Collector
current
to
1
A
+0.02
A).
7.
(1)
Switch
over
the
OPERATION
switch
and
effect
aging
for
10
minutes.
(2)
By
adjusting
VR3
(L-channel)
and
VR4
(R-channel)
of
the
PUX-020,
regulate
the
test
point
voltage
to
500
mV__
f.
+5
mV
(Collector
current
to
1.06
A
+0.01
A).
With
the
above
operations,
idling
current
adjustment
for
A-class.
operations
has
been
completed.
CAUTION
1.
Never
switch
off
power
until
the
idling
current
adjustments
for
Class-A
operations
have
been
completed.
2.
Special
attention
should
be
paid
in
handling
the
variable
resistors
used
for
adjustments,
i.e.,
VR3
and
VR4,
and
VR5
and
VR6,
as
they
can
be
easily
mistaken
for
one
another.
lf
by
mistake,
VR5,
or
VR6
has
been
used
for
the
idling
current
adjustment
for
A-class
operations,
readjustment
must
be
carried
out
(after
confirming
that
the
radiator
of
the
power
amplifier
has
cooled
down)
for
B-class
operations,
since
the
mistake
will
cause
a
deviation
in
the
adjustment
for
B-class
operations.
On
completion
of
this,
carry
out
adjustments
for
A-class
operations
again.
3.
The
adjustment
of
6.
(2)’’
should
be
effected
after
about
10
seconds
have
passed
following
switch-on
of
the
OPERA-
TION
switch.
ny
se
INPUT
TERMINAL
UNIT
PRINTED
CIRCUIT
BOARD
PATTERNS
AND
PARTS
LIST
INPUT
TERMINAL
UNIT
ETC-143
a
ba
a
ww
: :
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2
a
e
\
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2
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x
=
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ETC-143
PARTS
LIST
RESISTORS,
CAPACITORS
2410378003
2531027000
2551088003
OTHER
PARTS
2220560001
2048009003
2048007005
2040055000
2038058019
2038058006
2038059005
4450033005
2040046006
4140113002
MD-5271
+5%
+80,—20%
+10%
470
k
ohm
0.1uF
0.22uF
P.C.
OCARD
1P
JACK
1P
JACK
6P
CONNECTOR
5P
CONNECTOR
5P
CONNECTOR
5P
CONNECTOR
WIRE
CLAMP
BAND
5P
PIN
SOCKET
INPUT
BRACKET
P.C.B.
SUPOORT
asia
Ii
Part
Name
&
Descriptions
FOR
PHONO
FOR
REC1,2
FOR
TUNER
FOR
TAPE
R
FOR
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FIXED
CARBON
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RESISTOR
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CERAMIC
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TUNER,
AUX,
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FOR
OHONO
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2
USED
6
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