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() qoruEEn'
The luure ol sound and vEron.
,A
otu ORDERNO.
ARP2106
STEREOCONTROLAMPLIFIER
G-72
c-73
MODELS C-72 AND C-73 HAVE FOLLOWINGVERSIONS:
Applicablo model
Type Powerrequirement Destinalion
c-73
KU/CA o AC120Vonly U.S.A. and Canada
AC110V, 120V- 127V,220V, 240V
o (Switchable) Kingdomol Saudi Arabia and General market
AEZ o AC220V, 240V (Switchable)+ WestGermany
HB o *
240V(Switchable)
ACa2OV, UnitedKingdom
* Change connection the power
lhe ol translormer wire.
lead
and HB types.
. This manualis applicable the C-7ZKU|CA, C-73lHEz
to SD,
o As to the C-72/SDtype, refer to page 44.
. As to the C-73|HBtype, reter to page 72.
CONTENTS
I. SAFETYINFORMATION 2 4, FORC.72|SD TYPE . . . 44
2. EXPLODED VIEWS,PACKINGAND PARTS LIST 5. FORC.73IHEZ TYPE . . 45
AND C-73/HEZTYPES) . . . .
(FOR C-72/KU/CA 6. FORC-73|HB TYPE . . . 72
't1 73
3. FOR C-72/KU/CATYPE . 7 . t c | N F o R M A T I O.N. . . .
.
. This service manual is intendedfor qualifiedservice technicians; is not
it
meant for the casualdo-it-yourselfer. oualified technicianshavethe neces-
sary test equipmentand tools, and have been trainedto properly and safely
repaircomplex productssuchasthosecoveredby this manual.
lmproperly performed repairscan adversely affect the safety and reliability
of the product and may void the warranty. lf you are not qualified to
perform the repair of this product properly and safely, you shouldnot risk
trying to do so and refer the repairto a qualified servicetechnician.
WARNING
Lead in solderusedin this product is listed by the california Healthand welfare agencyas
a known reproductive toxicant which may causebirth defectsor other reproductivehaim
(CaliforniaHealth& SafetyCode,Section 25249.5).
when servicing handling
or circuit boards and other components whichcontainleadin in
solder,avoidunprotected skincontactwith the solder. Also,when soldering not inhale
do
any smokeor fumesproduced.
1. SAFETY INFORMATION
F O RU S AM O D E L N L Y )
O
l.SAFETY PRECAUTIONS ANY MEASUREMENTS NOT WITHIN THE LIMITS
The following check should be performed for the OUTLINED ABOVE ARE INDICATIVE OF A PO.
continued protectidn of the customer and service TENTIAL SHOCK HAZARD AND MUST BE COR.
technician. RECTEO BEFORE RETURNING THE APPLIANCE TO
LEAKAGE CURRENT CHECK THE CUSTOMER.
M e a s u r e l e a k a g ec u r r e n t t o a k n o w n e a r t h g r o u n d
(water pipe, conduit, etc.) by connecting a leakage 2.PRODUCT SAFETY NOTICE
current tester such as Simpson Model 229-2 or M a n y e l e c t r i c a la n d m e c h a n i c a lp a r t s i n t h e a p p l i -
equivalent between the earth ground and all exposed ance have special safety related characteristics.These
metal parts of the appliance (input/output terminals, are often not evident from visual inspection nor the
screwheads. metal overlays, control shaft, etc.). plug protection afforded by them necessarily can be ob,
t h e A C l i n e c o r d o f t h e a p p l i a n c ed i r e c t l y i n t o a 1 2 O V tained by using replacement components rated for vol-
AC 60Hz outlet and turn the AC power switch on. Any t a g e , w a t t a g e , e t c . R e p l a c e m e n tp a r t s w h i c h h a v e
current measuredmust not exceed O.5mA. these special safety characteristics are identified in
this Service Manual.
Electrical components having such features are
identified by marking with a .A on the schematics and
on the parts list in this Service Manual.
The use of a substitute replacement component which
dose not have the same safety characteristics as the
P I O N E E Rr e c o m m e n d e d r e p l a c e m e n to n e , s h o w n i n
the parts list in this Service Manual, mav create shock.
fire, or other hazards.
Product Safety is continuouslV under review and
new instructions are issued from time to time. For
the latest information, always consult the current
plug reversed
(UsingAC adapter P I O N E E R e r v i c e M a n u a l . A s u b s c r i p t i o nt o , o r a d -
S
plug as required) ditionalcopies of, PIONEER ervice Manual may be
S
obtained at a nominal charge from PIONEER.
AC Leakage est
T
MEMO
2. EXPLODED VIEWS, PACKINGAND PARTS LIST
(FOR C-72|KU|CA
AND C-73|HEZ
TypES)
2.1 PACKING
C_72lKU/CA AND SD TYPESONLY
.______1_______r
t--67 I
ffo'*'i
L____* _________t
C-72/SD type only
C-72 type only
2.2 MAIN BLOCK
't C-73 type only
f--@
C- 72 t ype only-
See Page 7
$re
r>
---"---il
14
Z
I
I
13
II
17
42 15
14--
g-14
I t_
C-72 type only
C-72 type only
131
A
115
@
16
,15
P
\i-
B
29
/r./
c
..4,
L
42
D
I 14
\ 42 15
15
6_,0
l t_
3. FOR C-72IKU/CATYPE
TIC IAGRAM
D
'^ 3 . 1 ANDE M ABoARDS
SCH
P.c.
DIAGRAM
CONNECTION
r
FO'l
It
C
D
111
Aru
ru n(e I
lt a
t_
021 3 oE
,rEjir" "l?S'
+ ]C206 : BUFFER
!3 ?EFE3l$;rt
IO FRONTINPUTASS'Y
5!l:rli!Ellsp:r 6=F:6=5=5
irrl l;ii
tr TO CONnOt ASS.Y
tr IO CONIFOL ASS'Y
tr to coNmor
@
a$ Y
10 11 12
1. FESTSTORS:
Lt Indicatedin A, 1/8, 1/4W, 157" toleranceunless othsmise noted
- otREcI oil, uL.qrT. tl^r{ ROUIE
VARIABLE r - r - - - otRcl 0N. Ftx (ltr K; ko, M; Mn, (F); r 170,(G); t2%, (K); t roc/o,
(M); !20%
p-J
- - - otREcroFF, g,ltn{tc tolgrance.
----DnECTdrF.T(I\
2. CAPACITORS:
L1 A
Indicatodin caprcity (sF) / voltago (V) unless otherwisenoted p: pF.
FIXED OUT
pJ Indicationwithout voltags is 50V except elsctrolytic capacitor.
3. VOLTAGE CURRENT:
F ; DC voltage (V) at no input signal.
Value in ( ) is OC voltage at rat6d power.
emA : DC cu.renlat no input sigoat.
0207.0208 : flulE
4. OTHERS
. e; Signal route.
o @; ^Adjustingpoint. -
reotl tlc20? :
HspF -- EUFFER . Ths Amark lound on some componont parts indicatosthe
importanceof tho safsty lactor of the part. Thsrefore,when
roplacing,bo sure to usa parts of idsntical designation.
o X marked capacitorand resistor havo parts numbsr.
o This is the basic schgmaticdiagram, but the aclual circuit may
vary due to improvsmentsin design.
5. SWITCHES (Th undarllns indlcates the 3witch posltlon)
CONTROL Assembly
5701 : POWER SW (STANOBY-ON)
5702 : LO
i03-031 :5TA81L1ZED
2
POWER SUPPLY S7O3 : TV/AUX B
S704 : VCRI
603 reS
604 &105 5705 : VCR2
@05-@0? 2@$ 5706 : VIDEO
@oa.09 2$1306
t0 25Arras 5707 : PHONO
@rr. 612 25A13G 5708 : TAPE ZMONITOR
TOTI S7O9 ; GD
5710 : TUNER
(rom ral S7l1 : TAPE I/DAT
S712 : MUTING
S713 : SUBSONIC
S714 : PHONO-SEL
5715 : DIRECT -
5716 : V-SEL
2 1 3 : RELAY
ORIVER S717 : REC-SEL
226
Outside ol P.C. Eoard
52 : VOLTAGE SELECTOR AKX-507 (SD typs only)
s1 VOLTAGESELECTOR AKX-507 (SD type only)
C
to T2
fio ry 12)
o
F
-
D
=535 t !' : r[
o 0
t;d!
&ASSY
trl
_l 10 11 12
ASS'Y
POWER
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d"atir p d"46 -r.
a | ,{c2r} lo N
6T'd I = '),f52
A i YPF
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