Pioneer M-73HEZ, M-73HB Service Manual
(v)
proruEen'
I ne lurut€ oI souno ano v|s|on.
ORDER NO,
ARP2101
STEREO
POWER
AMPLIFIER
M-73
MODEL
M.73 HAS FOTLOWING VERSIONS
:
r
Thlr manual b appllcable to
dro
M-73/HEZ and HB typer.
.
Ar
to tho HB typs, refor to
page
26.
r
Ce
manuel
pour
le
rervlce comprond
ler
expllcatlonr de r5glage cn
frangalr.
o
Elte manual
de
eervlclo trata dol m6todo alulto olcrfto en erpafiol.
CONTENTS
1.EXPLODED
VIEWS, PACKING AND
PARTS LfST......
....'.'....'.'....2
SCHEMATIC
AND
P.C.BOARDS
coNNECTtON D|AGRAM
"...'..'.... .". ...'...'...
I
P.C.B's PARTS LIST
..........'...... -..'.. -.........
17
ADJUSTMENTS
...'.....'.....22
2,
3.
4.
Typc
Powar lrquhn|rnt &porr
.Lrfh.tbn
HEZ AC22OV,24OV
l.whohabl6)
*
Wrtt Garmsny
HB AC?2OV,24OV
{lwhcheble}
*
Unhod Klngdom
{.
Chlngo thr conn.ctlon ol tho
powcr
lrlnlformll!
ffl
sd T2} laad wlra.
PIONEER
ELECTRONIC CORPORATION
4-1, Mesuro 1-chome,
Mesuro-ku, rokyo 153, Japan
PIONEER
ELECTnO ICS
SERVIC€
lNC. PO. Box 1760, Long Beach, California 9080't U.S.A.
PIONEER ELECIaO lcs
OF CANADA,
lNC. 505 Cochrane Orive, Markham, Ontario L3F 8E3 Canada
P|O|{EER
ELECTROiIIC
IEUROPEI
N.V. Keetberglaan 1, 2740 Beveren, Belgium
PIo|{EER ELECTnOMCS AUSTFALIA PW. Lm. 178-184 Boundary Road, Braeside,
Victoria 3195, Auslralia
TEL:
[03]
580-9911
O PIONEER ELECTRONIC CORPORATION
1990
YV AUG.
1990
Printed in Belgium
1. EXPLODED VIEWS, PACKING AND PARTS LIST
NOTEST
.
Pa s veithout
part
number cannot be supplied,
o
The
A,
mark
found
on some
component
parts
indicaEs
the impormnce of the safety
fsctor
of
the
psrt.
Ther4orc, when
replacing be sure lo use
par/,'
of identicol designa-
tion.
.
Parts rrurkcd by
"@"
are not
alwalts
kzpt in stock. Their delivery
time
mty
be longer
than usual or they moy be unavailable.
Pan! llst of Extorlol
and
packlng
Mrrt No. Dlcrlptlon
P.n. ftlo.
Mlrt No.
Darcrhdon Plrtr l{o.
I
2
4
INPUTAlleobly
PS
A&lcBbly
rNOB
PUSH XNOB
XNOB
(POWER)
SP-LCH Arrcmbty
NAME PLATE
METAL)
SP-RCH Arrcnbly
FRONI Arscobly
POWER L Arscmbly
SCREW
SCREW
(STEEL)
SCNEW
(STEEL}
SCREW
(STEEL)
SCREW
(STEEL}
SCREW
(STEEL}
SCREW
(STEEL)
scREw
(STEEL)
SCREW
SCREW
(STEEL)
SCREW
WASHEB
WASEER
COIL
SPRING A
FLANGE NUT M9
NUT
PI'LG CORD
AC POWER CORD
GROI'ND
LEAD
LEAD WIRE
I,EAD
WIRE
SPACER SET
CUSHION C
(RI'BBER)
CUSHION
GUBBBR)
CUSHION
C
(RT'BBER}
POWER R Aaaenbly
@VER
STRAIN REIJEF
BINDER
PCB
HOLDER
SPACER
COLOR
AARRIER
BARRIER
SHEET
VOL-F A-grenbly
REG Asscnbly
HEAD PHOM Ars€nbty
STYROL PROTECTOR
STYROL PROTECTOR
PACI{ING CASE
SW Arsenbly
PACKING SIIEET
TERMINAL SCREW
SHORT PIN PLUG
PANEL BASE
FOOT
F@T
INDICATING
LENS
JOINT
IIEAT
SINK HOLDER
SIDB BOARD
R
SIDE
BOARD
L
SIDE FRAMB R
SIDE FRAME L
TRANS. FRAME
FRONT PANEL
REAR PANEL
PANEL
STAY
METAL BONMT
BOTTOM PLATE
PCB HOLDER
EARTH PLATE
IIEAT
SINI(
A
HBAT SINK
B
IIEAT SINK
C
SHIELD CASE
SHATT
OPERATING INSTRUCTIONS
PIN
JACK
Agenbly
AW23065
awz3066
AABT
175
AAD1366
AADI835
AWz3067
AAMlOOl
AWz3068
AWZ3069
AWZm'6
ABA- 298
ABAI(x}4
ABAlOO9
ABA1O11
ABAIOI4
ABA104?
ABAlOil8
ABAIO50
ABAIOS2
ABAIOSs
ABAIOS8
4.a81009
ABFIOIT
A8IIl056
A81tu48
ABN.O65
ADEIOlS
ADGl036
AIIA1O33
AIIA1O34
AHDI925
AKM-O5O
AMBI685
AMRlI58
AMR1159
AMR1160
AMRT
178
AMR2193
AMSr(Xg
AMS1050
AEC1165
AEETOI4
ANBT4I9
ANEI253
ANGl4?4
41
42
43
44
45
46
17
48
t9
tu
51
52
5{
CD
to
5?
58
59
60
6t
62
63
6{
65
66
67
68
69
70
7l
?3
75
'16
?8
79
80
o
7
8
9
10
l1
12
13
1,1
l6
L7
18
l9
20
22
23
u
25
26
27
A2a
29
30
3l
32
3i'
34
35
37
38
39
40
AEAlOlO
AW230?8
AEG882
ANL1O:!3
AXE1166
Mark
t{o. Drrcrlpdon
Pan.
ltlo.
Ma* No.
Dlacrlpdon
Penr
No,
81 BIAS 1A!8cobb
82 REINFoRCE
L
Asscobly
8:r scREw
U NUT
85 SCREW
BBZ4OPMOFZK
NK9OFCU
VI\'tZ!l0P060FCU
96
TRANSISTOR
(Q3)
97 TMNSISTOR
(Q4)
98 TMNSISMR
(Q5)
99 TRANSISMR
(Q6)
1OO TRANSISTOR
(Q7)
106 BIAS 3 Alscnbly
IO7
SCREW
(STEEL)
108
scREw
2SA1302
2SAl302
2SAr302
2541302
2SC3281
ABA11I5
BBZ3OPO5OFZK
A
A
A
A
A
A
A
A
A
101 TMNSISmR
(Q8)
2sql281
102
Pltsg swITcH
(RtwER,
st) AsG553
103
POWER TRANSFORMER
(T1)
4Ts1298
IO4 POWER TRANSFORMER
(T2)
ATSI299
105
REINFORCER,{sEaobly
A
A
A
A
A
A
A
A
A
A
86 ELECTROLYTIC
CAPACIT,
C1 ACII116O
E? CKA
(0.0UAO100V,
C2)
88 FttSE
(T800MA
FU1)
89 FUSE
(T8OOMA,
FU2)
90 FT]SB
(T5A
FU3)
91 Fr.rSE
(TsA,
FU{)
92 FUSE
(T3.1sA,
FUs)
s3 FnsE
fTs.rsa
FU6)
9{ TMNSISTOR
(QT)
95 TMNSISTOR
(Q2)
A@1003
AEK-0!11
AEK.O31
AEK.O15
AEK.O15
AEK.{N2
AEK.(x2
2SC3281
2SC3281
packlng
3
J
Ext€rior
83
22\
vr5
t4
70
t08
t4
t-"
2
@-
I
Y
l4
I
E-p
/./
t3
r
9T
/l
/in
5
2
-'N
"E
F:255
3
to
13
"&
I
o
'-
72
t4 I
1i
t08
(vt7
INPTJT
As
s enb ly
(AWz3065)
POi'E R
L
lawz3at6)
RO5.5ESB
D402,405 AEL-43?
r
5s2s2
HZSSALL
o?D1, O2O?
MUTE
I
o2o3
i
::al:.. i:*11,.
,,it,i
0201 a^d 0202 oRrvEr
l:::1
M52'APF
o201.202
25C2A7A
2SC17.05
D201,
202 153252
PIN
JACK
Il?lElllilzlsl
-
2. SCHEMATIC AND P.C.BOARDS CONNECTION
DIAGRAM
L INE
2sk3B9NK
a1o2-1o1,
2SC1A45
o.09,
.r
r, 415 2sA99?
o.1
r, 420 2sc2709
o111..19 2SA1145
o.1s 2sc2603
o421
2SC329A
r.
nEsrsToas:
lidirl.d in
n, %U,
7.W.:5* rc|....E ud6 oth.oi!
not.d k : ka,
M : Mo,
tF)
:
!rt,
lc)
: r2*,
lKl
: J IOX
lMl;
'20tt
tol.r..tcc.
2. CAPACITORS:
rndin.d in
c.prity
(!
F)/volr|g.
lvl
u.lc6 oth..wis
rlot.d
p : pF.
Indic.tion
sirhoor volrTp i. sOV cc.pr .lErrolyri. c+-iror.
3.
VOLTAGE.
CURFENT:
E'signar
voltas€
at
(1251 r
l25l so
(crass
B),
251
+
25U EO
(Class
A)l output(lktlz).
E
: DC \,olr.G
(vl
at rc
iiotrr tis.d.
Vd0. in
{ )
L DC
wlt4.t
ntcd
Powtr.
€
mA :
Oc drrrtni .t m
inpul .ign.l
.
il0lE;Voltas€
.nd current
sre
shoen
in the CLISS I
rcde.
4. OTHEnS:
A
: adiuni"g
point.
Th. A d* land
on
5@ conDo.Ent
p..tt
indic.r6 ih.
im_
oonft.
ol thc t
lctv l-ior
of $.
D.n.
TtE.tlo.., thm
rlgl*ing,
b. $r. i6 or.
p.ns
ot
i(hnri.rl
d6i!.Etion.
* m..l.d
c?-ito.l
ar|d rlEino.t h|vc
parB
rumblfs,
ihi3 i.
rhc b.!t .h!fr.r4 di.gr.n, bda lh.
-i!al
or@rl
m.Y v.rY
dle ro
improv.6.n$ 'n
d6'9.r.
S.StITCflES
Sl: P0IER Sl
FRoill lsserbry
LINE VOLTAGE
SELECTION
(For
llEZ and
HB typo3l
Line voltage caa be cbanged
with
{ollowiDg
steps.
1. Discon[ect the
AC
power
cord.
2. Remove the
top cover.
3. Chage
the
connectiou
ol the
porer
h'dnsformerg
(Tl
and T2) lead
wire.
{, Stick
the
line
voltag€
label @ tie rcar
panel.
Prt o. D.rctb&.|
PO\JVE
R R
(
awz3al
a)
0503.606,
o5r 3. 620
1SS262
2SC210S
25C2603
25C3234
6
s30l: cD DInEcT 0!-0FF
LIiE DINECT
OII.OFF
c0r{Tfi01 rrP 0il-qf_t
s302: sP-l
orr-QFF
sP-8 0i-0FF
1
32
AAX-r 93
aax-192
2:lov l.v.l
2/t()V lcv.l
I
64
SP-L As s.hb
I
y
(AWZ305
SP-R
Assenb ly
(AwZ3t
€
i,i'
PS assenb ry
(^\
O415, O"17 REGULATOR
Assembly
..r
(AwZ3O11)
0106, ol
0r
oc DETEC
ToR
lsh.n
3ri rch ir cLA55A/3
RE I NFORCE
R
Assehbly
,:;1];oo
l^wz3o19)
4
7
I
a
It,.5,.t,
3067)
A
B
3C
5a)
0
e
a
FRONT As s emb
I
y (AWZ3O69)
oaol-ro3
RN12{,3
ot01-305
A€Ll055
0306
a€L11r5
o31
7.
31A. 320.
155252
o323.331,332
0313.314 55555
0319 RD15€5A
rcr0r. rc102 R€cuLAToR
(Awz
3 0 66)
REG Assembly
i':;";,i:;rJ I l3:3';e:"3,*,,,
.+-f
oi03, ol 04
R€LAY
ORIVE
OlOA RELAY
OR]VE
0101,103 256634
0102 Fr{1203
0104. 106. 107.2SC2456
0152
0105,
151, 153
2SAl 0.6
or
oa
2sBs50
0101-10.
s5566
0105.
11,1. 115,155252
o11A-121.
0151 ,
152
0106-113 aODF2FC-2
Dr
15 RO4,7E5a2
D117 ROr
2ESa2
tl t-
POWER L Assembly
(AWZ3076I
I
rrd* ri6.r'6rrd
-
so,
A
SP- RCH Aasembly
lAWZ3O68l
r€/l" rgl
rgL.&l
a,."",t
t-"
I
-lF
SP- LCH
Assembly
lAWZ3O67l
REINFORCE R Assem
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