Pioneer A-501R/HEWZ Service Manual - Page 3
Browse online or download pdf Service Manual for Amplifier Pioneer A-501R/HEWZ. Pioneer A-501R/HEWZ 27 pages.
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A-550R,
A-450R
1
.
EXPLODED
VIEWS,
PACKING
AND
PARTS
LIST
NOTES:
•
The
parts with
an
encircled
number
are generally
unavailable
because
they are
not
in
our Master Spare
Parts
List.
•
The
A
mark found
on
some
component
parts
indicates the
importance of
the
safety
factor
of
the
part.
Therefore
,
when
replacing
,
be
sure
to
use parts
of
identical designation.
•
Parts
marked
by
"
<§>
"
are
not always kept
in stock.
Their
delivery
time
may
be
longer than usual
or
they
may
be
unavailable.
1
,
1
PARTS
LIST
OF
A-
550R
AND A
-
550R -
S
TYPES
Mark
No.
Description
Parts
No.
Mark
No.
Description
Parts
No.
1
ROTARY KNOB
S (BASS,
AAB1155
26
CUSHION
(RUBBER)
AEB1074
TREBLE)
27
CUSHION
C (RUBBER)
AEB-270
1
ROTARY KNOB
S (BASS,
AAB1238
28
NYLON
BINDER
AEC-093
TREBLE) (A-550R-S
type)
29
RIVET
AEC-441
2
ROTARY KNOB
L
(VOLUME
AAB1160
30
STRAIN RELIEF
AEC-882
CONTROL)
2
ROTARY KNOB
L
(VOLUME
AAB1161
31
CONTROL)
(A
-550R-S
type)
32
LED ASSEMBLY
AWZ3495
3
ROTARY KNOB
R
(PLS)
AAB1162
<§)
33
CONTROL ASSEMBLY
AWZ3496
3
ROTARY KNOB
R
(A-550R-S AAB1163
34
ROTARY
FUNC.
ASSEMBLY
AWZ3497
•type)
35
DRY
CELL
BATTERY
AEX-021
4
ROTARY KNOB
M
AAB1231
(R03,
AAA)
(REC/INPUT
SELECTOR)
4
ROTARY KNOB
M
AAB1236
36
STYROL PROTECTOR
AHA1335
(REC/INPUT
SELECTOR)
37
PACKING CASE
AHD2130
(A-550R-S
type)
37
PACKING CASE
(A-550R-S
AHD2131
5
PUSH KNOB
(STANDBY)
AAD1246
type)
5
PUSH KNOB
(STANDBY)
AAD2033
38
EYE
ASSEMBLY
AWZ3498
(A-550R-S
type)
39
PACKING SHEET
AHG1016
40
TERMINAL SCREW
AKE-031
6
PUSH KNOB
C (SPEAKERS,
AAD1366
DIRECT,
PHONO
SELECTOR)
41
PLUG
AKM1004
6
PUSH KNOB
C
(SPEAKERS,
AAD1367
A
42
AC SOCKET
3-P
AKP-502
DIRECT,
PHONO
SELECTOR)
43
PANEL BASE
AMB1651
(A-550R-S
type)
43
PANEL
BASE(A
-
550R
-
S
type)
AMB1652
7
PUSH KNOB
(SUBSONIC,
AAD1536
44
INDICATING LENS
AMR1160
LOUDNESS)
45
INSULATOR ASSY
AMR2140
7
PUSH KNOB
(SUBSONIC,
AAD1538
LOUDNESS) (A-550R-S
type)
46
ARM
AMR2142
8
POWER
KNOB
AAD1984
47
MICA SHEET
AMR2295
8
POWER KNOB
(A-550R-S
AAD2040
48
CHASSIS
ANA1065
type)
49
FRONT PANEL
ANB1462
9
TACT KNOB
(MUTING)
AAD2003
49
FRONT PANEL
(A-550R-S
ANB1477
9
TACT KNOB
(MUTING)
AAD2032
type)
(A-550R-S
type)
50
REAR PANEL
ANC1712
10
SENSOR
WINDOW
AAK1783
51
SHIELD
ASSEMBLY
AWZ2860
11
POWER SW
ASSEMBLY
AWZ3493
52
BOTTOM
PLATE
ANF1085
12
NAME
PLATE
(METAL)
AAM1029
53
PCB
HOLDER
ANG1198
13
SCREW
ABA
-298
54
HEAT
SINK
HOLDER
ANG1340
14
SCREW
(STEEL)
ABA1009
55
PCB
HOLDER
ANG1580
15
SCREW
(STEEL)
ABA1011
56
HEAT
SINK
ANH1259
16
SCREW
(STEEL)
ABA1016
57
SUB
HEAT
SINK
ANH1325
17
SCREW
(STEEL)
ABA1047
58
ROD
ANR-879
18
SCREW
(STEEL)
ABA
1048
59
OPERATING INSTRUCTIONS
ARE
1201
19
SCREW
(STEEL)
ABA1050
(English,
French,
German,
20
SCREW
ABA1082
Italian,
Dutch, Swedish,
Spanish,
Portugues)
(HE
type)
21
BUSH
ABF1018
59
OPERATING INSTRUCTIONS
ARC1278
22
SPRING
ABH-052
(German)
(HEWZ
type)
23
SPRING
ABH1034
60
HEADPHONE ASSEMBLY
AWZ3484
24
NUT
ABN
- 065
25
AC
POWER
CORD
ADG1049
9
61
AF
COMPLEX ASSEMBLY
AWZ3487
9
62
TONE ASSEMBLY
AWZ3491
s