Pioneer SX-2900 User manual

}
PIONEER:
|
Theé'Art of Entertainment .
Service
SX-2800
Sx-1900
SX-240
MODELS
SX
—
2900,
SX
—
2800,
SX—
1900
AND
SX~
240
HAVE
FOLLOWING
VERSIONS
:
Applicable model
Power
requirement
Export
destination
ACI 20V only
U.S.A. and Canada
ACI tov, 120-—127V, 220V,
240V (switchable)
Aci 20V only
Kingdom
of
Saudi:
Arabia
and
General
market
U.S.A. and Canada.
°
This
manual
is
applicable
to
the
SX
—
~2900/KUC,
SD,
SX
—
2800/KUC,
SX—
1e00/KUC,
sD
ay
~SX—240/KUC
types.
*
As
to
the
Sx—
-2900/SD,
SX
—2800/KUC,
SX
—
1900/KUC,
SD
and
SX—
—240/KUC
types,
‘eter
to
pages
31-
-
34.
°
As
to
the
SX—
1900/KUCXJ
type,
refer
to
applicable
service
manual.
°
Ce
manuel
pour
le
service
comprend
les
explications
de
réglage
en
francais.
*
Este
manual
de
servicio
trata
del
método
aitiete
escrito
en.
espafiol.
PIONEER
ELECTRONIC
CORPORATION
4-1,
Meguro
1-
-Chome,
Meguro-ku,
Tokyo
153,
Japan
PIONEER
ELECTRONICS
SERVICE
INC.
P.O.
Box
1760,
Long
Beach,
California
90801
U.S.A.
PIONEER
ELECTRONICS
OF
CANADA,
INC...
505
Cochrane
Drive,
Markham,
Ontario
L3R
8E3
Canada
PIONEER
ELECTRONIC
[EUROPE]
N.V.
Keetbergiaan
1,
2740
Beveren,
Belgium
_
.
;
PIONEER
ELECTRONICS
AUSTRALIA
PTY.
LTD.
178-184
Boundary
Road,
Braeside,
Victoria
3195,
Australia
TEL:
[03].580-9911
©
PIONEER
ELECTRONIC
CORPORATION
1990
YI
NOV.
1990
Printed
in
japan.

CONTENTS
4.
SAFETY
INFORMATION
creer
2
6.
REGLAGE
covrccec
reece
reece
terrence
teen
nee
e
nee
e
ens
27
2.
EXPLODED
VIEWS,
PACKING
AND
GB.
AJUSTE
cocccecctr
eter
eet
e
rete
eee
ne
nee
ne
nena
eee
eeees
29
PARTS
LIST
cccccccecret
eect
nt
nee
nese
nes
3
7.
FOR
SX-—2900/SD,
SX—2800/KUC,
3.
SCHEMATIC
DIAGRAM
«verre
7
SX—1900/KUC,
SD
AND
SX—240/KUC
4.
P.C.BOARDS
CONNECTION
DIAGRAM::::-°:::
12
TYPES
cr
eccr
ects
tree
eee
en
eee
en
tener
sense
ec en
ene
eeee
renee
31
5.
P.C.B’s
PARTS
LIST
rc
21
8.
PANEL
FACILITIES
<-cecceceecerere
reece
ee
ee
er
eens
35
6G.
ADJUSTMENTS
cocci
25
Q.
SPECIFICATIONS
ec
rerercrceeecc
cette
cee
rete
ee
ee
ees
38
This service manual is intended for qualified service technicians; it is not
meant for the casual do-it-yourselfer. Qualified technicians have the neces-
sary test equipment and tools, and have been trained to properly and satay
repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability
of the product and may void the warranty. If you are not qualified to
perform
the
repair
of
this
product
properly
and
safely,
you
should
not
risk
trying
to
do
so
and
refer
the
repair
to
a
qualified
service
technician.
WARNING
Lead
in
solder
used
in
this
product
is
listed
by
the
California
Health
and
Welfare
agency
as
a
known
reproductive
toxicant
which
may
cause
birth
defects
or
other
reproductive
harm
(California Health & Safety Code, Section 25249.5).
When
servicing
or
handling
circuit
boards
and
other
components
which
contain
lead
in
in
solder,
avoid
unprotected
skin
contact
with
the
solder.
Also,
when
soldering
do
not
inhale
any smoke or fumes produced.
1. SAFETY INFORMATION
(FOR USA MODEL ONLY)
1.SAFETY PRECAUTIONS
The following check should be performed for the
continued protection of the customer and service
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc.). Plug
the AC line cord of the appliance directly into a 120V
AC 60Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5mA.
Reading should
teskege not be above
Device 0.5mA
under
Test all
exposed metal
surfaces
2-wire cord
Also test with
plug reversed
(Using AC adapter
plug as required)
+ Earth
ground
AC Leakage Test
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A PO-
TENTIAL SHOCK HAZARD AND MUST BE COR-
RECTED BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER.
2.PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appli-
ance have special safety related characteristics. These
are often not evident from visual inspection nor the
protection afforded by them necessarily can be ob-
tained by using replacement components rated for vol-
tage, wattage, etc. Replacement parts which have
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
PIONEER recommended replacement one, shown in
' the parts list in this Service Manual, may create shock,
fire, or other hazards.
Product Safety is continuously under review and
new instructions are issued from time to time. For
the fatest information, always consult the current
PIONEER Service Manual. A subscription to, or ad-
ditional copies of, PIONEER Service Manual may be
obtained at a nominal charge from PIONEER.

2. EXPLODED VIEWS, PACKING AND PARTS LIST
NOTES:
© Parts without part number cannot be supplied. A
© 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 designa-
tion.
© Parts marked by “®” are not always kept in stock. Their delivery time may be longer
than usual or they may be unavailable.
Parts list of Exterior and packing
na
Mark No. Description Parts No. Mark No. Description Parts No.
1 ROTARY KNOB (BALANCE) AAB1133 41 HEAT SINK
2 MASTER VOL ASSY AAB1207 42 OPERATING INSTRUCTIONS ARB1286
(VOLUME) (English)
3 TACT KNOB (RETURN) AAD1398 43 TRANS ASSEMBLY
4 KNOB (POWER) AAD1661 : 44. REMOTE CONTROL UNIT AXD1186
5 SPEAKER KNOB (SPEAKERS) AAD1662 (CU—SX021)
45 SCREW BBT30P060FZK B
6 TUNER FUNCTION KNOB AAD1663
: OT GR OES “ paren 46 SCREW BPZ26P080FMC
8
10 ACRYLIC PANEL ; AAK2092 . 49 NAME PLATE
11. STATION SASH AAP1111 50 SCREW PMZ30P060FCU
. 12. EQUALIZER SASH — AAP1112
© 13 COMPLEX ASSEMBLY AWZ3267 oF Re NZS eOE EY ae
© 14 CONTROL ASSEMBLY AWZ3268 52 CERAMIC CAPACITOR (C3) CKDYF102Z50
15 SP SWITCH ASSEMBLY A 53 FUSE (4A/125V, FU1) AEK—100
A 54 FUSE (1.25A/125V, FU3) AEK—120
16 SCREW ABA-298 J, 55—-FUSE (1.25A/125V, FU4) AEK~— 120
een revere 56 LOOP ANTENNA ATB1005
19 SCREW ABA1082 AN 57 TRANSISTOR (Q1) 2SC3181N
20 WASHER ABF1017 ‘\ 58 ~—s TRANSISTOR (Q2) 2SC3181N
A 59 TRANSISTOR (Q3) 2SA1264N
21 COIL SPRING ABH1064 A, 60_~—s TRANSISTOR (Q4) 2SA1264N C
A 22 AC POWER CORD ADG1057
23. FM ANTENNA ADH1004 61 RESISTOR (7500/10W, R1) ACN1083
24 PCB SUPPORT A 62 POWER TRANSFORMER (T1) ATS1248
25 PCB SUPPORT 63. BATTERY COVER PZN1001
64 PVC SHEET AED1117
26 PCB SUPPORT
27. +=PVC PLATE
28 SHEET AEE1014
29 CLAMPER —
30 “AAA” DRY SELL
31 STYROL PROTECTOR AHA1015
32 PACKING CASE AHD1985
33. PACKING SHEET AHG1016
34. TERMINAL SCREW
35 FRONT PANEL AMB1753
36 INSULATOR ASSY AMR2140 D
37 CHASSIS
38 REAR PANEL
39 BONNET CASE ANE1215
40 PCB INDICATOR HOLDER

. SCHEMATIC DIAGRAM
“METER
veer ov S-METER vco 2 ~ 2
9 0 OO O20 0 ™E—— sn ae
Fez.
at
25
0261,0262:
J
:
RUZ
DATA
CONTROL
tuner
mute
[_]
TUNER
MUTE
Q103:
+B
SWITCHING
22k
i
oO
STEREO
Gai
stereo
||
C301
R301,
-|
-
-
13
rs
*
O
STOP
[o]
9
1630
CE
0.22/50
stop
|O
ae
6
tay
8
:
iP
4.7
C160
i
(308
FE
MODULE
1000p
:
RE
AM
0103
RNZ201
inka
}0,04
E
MUTING
foy
i
—>
O
Law
FUNG
STROBE
FUNC
STROBE
pas
27k
are
sen
Foss
49]
be
cE
C303
||
229
atk
Fsexn
Ty
5
IC}
D.
GND.
f
Q
DATA
Ri2zt
ttei20
lo
Pes
°
tk
P22/50
7
Lee
|
6
hae
‘
Sigs
ad
¢304
“|
(32
SH-2900/KUC,SD
AND
SX-2A0/KUC
ONLY
a
abe
saslemoonian
meee
s
na0G
2
gs
eS
st
Ne
1
1
- i -
' CNS Je!
= A
Wc
:
tT
I
1€361
©
VOL.
VOL
IN2
O
i
4
t
FM
&
AM
DETECTOR
(rc
(—
!
vou
nt
[5]
6
aes
S
ic301
=
Ul
ae
2
vou
Leo]
-|
Tt
(272)
oa
ee
17s
TAT291S
O
O
oa
&
os
~
52t,
ry
i
[a3
CI
Ud
26
||
5
Sg
3
G=33
ge
Vs
OUT!
Vrer
INA
1€301
NIM4556
AXx1011
Ie15t
35
|
|e*
7
6¥|
|
eea5
'
iss
5 6
7
8
9
3||z wo. GS) | ago Bs
AM
RF
ANT470P.
wr
es
zs
au
Se?
x
|]
Jaa
IC
301:
PRE
AMP.
}
TUNING
gs]
|Ps
af
BS}
|
535s
FUNC
CK
ides
BLOCK
feo
&
SSs°
ho”
see
4
EE
ag8
2 1
i
R310
tk
1 3 Ny
: ‘(8
8 o
;
3s
1
$3
R309
0
tk
,
|
a
H)
oO
zi
ad
i 1
‘
151-0153,
0153 MUTE 1 1rd ANTEOS bs
2SA9338 mae (ce) tt
i c3644i!
B46
2
Tio
0.1725
F
|
Pa
r
1e131
:
ss
288
wd)
rye
(abana
Vaseiiwith
LED
to
|
1
=
4
$X-2900/KUC
:
ACX1035
1
I
[mace
i
.
te
ee
ees
i!
|
;
SX-240/KUC:
ACXI052
|
|
1
{
1e13t
:
:
VOL
IND.
DRIVE
él]
Lm7oo1
pit2
7
'
.
10OKNx2
Ly
VOLUME
i
.
|
1
‘rete
7
,
afi
VR_
ASSEMBLY
s1-2900/80c
i
'
H
ONLY
1
a!
-
-
!
|
1
|
!
r
{
SX-2900/KUC,$
l L See ee ee ei ae i 1 | SX-240/K0C
ne
913:
A
|
vR301
{
Si-280
{ 100k x2 ‘SX-1901
To
ADDRESS
10-¢
;
RET
ION
i
40k
i
i
by
1
vou.
H
ror
0,
:
1740s
ne
ct”
}
2sc
SX-2900/KUC
1
0131,
a
lee
'
SX-2800/KUC
‘SX-2900/SD
SX-1900/KUC
| !
[oy
: L131
PARTS
NO.
SX-240/KUC
SX-1900/SD
|
los
.
i
+8
RIPPLE
FILTER
_.
—
VOLUME
assios
[rna,.
woxl
C153 C154
1500pF
1200F
1200pF
LL
i
eu
|
C165
Ci66
Nothing
Nothing
330pF
cist 4 (7200MH2) L c132 3 S
15
15
=
NS
OO
R
AWZ3267 = 51-2900/80c
AWZ3269 51-2900/50
‘
AWZ3271
5x-2800/K0C
;
4
i2y.>
AWZ3273
Si-1900/Kuc,s0
Sa
:
AWZ3293
sx-240/K0¢
<-12V
>
vy >
camera?
r
PLAY
IN|
sree
AO
150mV
/50k0
R223,
ev
330 E
TAPE
2
~
0523
:Hssio4g
-02
:
Be oe a Q501~ 0504, 0513, 0514, 858} -,B883: Q541, 0542, 055170554, 01.04 *: POWER AMP
[
150mV/2.2k
@
R221
F
a;
[2]
22k
551
rs35_]
2.2/50
psai
rser
A
400p/500|
os
;
ae
ps23
lr
A
RSS!
5X-2900/KUC,SU
150mV/50kO.
:
|
.
(‘K)
ave
SX-2B00/KUC
A\Rs63
10
(vaw)
i
523
TAPE
1/DAT
12p/500
Ee
R&S
REC OUT
eee
EC
OUT
(36.4)
L
Bomvr2.240|
|
QD
Si
idsoynuc,sp
uh
R525 240K
a
A\
R864
10
(174W)
VCR/
LINE
CO
RSO7
900/KUC,SD|SX-
1900/KUC
SD}
{150mv/50k0
390
=
2B00/KUC
1S¥-240/KUC
564
C562
R205
Ic201
:
C243
4
+
0.047
T°
0.087
1M
PHONO-EQ
On
R521,
R522
|
4.3kQ
(1/4W)
|
5.6k0
(1/4)
Lech
‘
e201
(172)
551,
Q552
|
283298
28C2235
216
Oe
RC4558DXP
[C4
SX-2900/KUC,
SU
oe5i,
9
rses
|
R566
150mv/50kQ.
SK-2800/KUC
0553,
9554
|
2SA1306_
|
2SA965
10
10
aaa
Lr
_
r
0813
*
Qt,
a2
28C3181N
25C3180N
aa
(vaw)
J
(1/4w)
riot
'
2801845
ses
03,
94
2SA1264N
2SA1263N
nez2
sae
j
ears 28C2240 4.7k
Z.Sav/50Kn
Cc
Ret
el
ye253
(v2)
5035
|
op/300.
L
560k
PT
Yoon
|
0621,
2622
:
[10]
!
OVER
LOAD
DETECT.
c201 BUFFER > 4 ‘
e503
!
9523
583
‘ty
Na
ey
*
Ore
1000p
Vane
ae
28C2705
asae
A
100p/500}
‘SX-2900/KUC,SD
+
SX-2800/KUC
ONLY
|
\
Fy
[ee]
[pszr,beee:
HSS104-02
44.2) Le Se 2 NR re ieee Se ad el
“
PHONO
Oo
tes]
$X-2900/KUC,SD
G601,Q602:
DC
DETECT
2,5mv/50kn.
C504
SX-2800/KUC
[
26]
Q603
et
|
[fer
2saioee
‘Cc
(-36.4)
Sonn
S08
a
SX-1900/8UC
SD
REOS
Rech
3
‘SK-240/
RUC
100
VCR
/
LINE
16202,
603
yf
180mv/50Kn
a
TeSI64N
100/16
REC OUT
450mv/2,2K2,
506
SX-1900/KUC,SD
[
luge
|
ld
R508
606
ROS
S4-250/KUC
TAPE
1/
OAT
R208
a7
RNIZO1
ae
oe
R220
1€202
:
FUNCTION
1¢
#3,
1
PLAY
IN
K)
IN
aéoe
i
S
(CF)
RNIZ203
&
4
=
i 4 o =
REC
OUT
RSS.
a
9603
,0605,0606:
|
cgog
(C3
SX-2900/RUC,,
SD
1SOmv/2.2k9.
mute
|
5°98
SK-2800/KUC
icboe ‘SK- 2900/KUC,SD ‘SK-1900/KUC,SD R528 e582
TAPE
2
‘SH-2900/KUC
SI-240/KUC
4
___|
| 9513, 0514 : RSt1, R512:
L
CURRENT
MIRROR
LOAD
RESISTOR
-
ee
—_——
————
—_———————__
‘s
—_—_—
<
- - - - - - -
“ - - -
Zz
ES
©
2
1
2 3
4
5
|
6 7

v3
"UNER MUTE
STEREO
UNC STROBE
cE
D.GND
R345,
Q311~,0320, IC311
GRAPHIC EQUALIZER CIRCUIT
O
i ch, O
sno |S
Lento]
er]
Ler{o]
awlot Io
R ch >} ity itty
re
i _— --|
7 ! in a
: : W700 O99 i
a !
! 1
\ 09009
| 1
H 1 | $X-2900/KUC,SD
Seek 1 1 SX-240/KUC
| VR301 i SX- 2800/40
| 100k x2 ‘SX-1900/80C,SD
1 ACTIO40 !
1 1
! i
! H
1 f
! |
! |
' |
1
Test (172)
CONTROL ASSEMBLY
SX-2900/KUC
Sk~2900/SD
SK-2800/KUC
‘SX-1900/KUC,SD
SX-240/KUC
AWZ3268
AWZ3270
AWZ3272
AWZ3274
AWZ3268
NUM4558S-X
$X~2900,SX-2800 TYPE 750(IOW)
SX-1900,SX-240 TYPE 620(1IOW)
A\ R563. 100174W)
L561
A\ R564 10 W1/4W)
ty
D705
HZS24-2L
10
G
deft ghijk
gers
sx-z900
7KUC,SD |
SX-240/KUC
‘SX-2800/KUC
SX-1900
/MUC, SD
ONLY
601 : RESET
_
=a
L562
1H
601
2862458
Ss
602
2sc2a5e
(7
: )
ur c601
470/6
Ri
400k Q603
os 2SA1048
e
©)
R6OS
100
c602 C603 4
0.01 100/16
621, 9622 :
OVER LOAD DETECT.
D601
HZSI2AL S REO7
100k
cSe4
0.047
C562
RS65 R566
10
1
(vaw)
‘SX-2900/KUC, SD
«)
0,047
10
(174)
SX-2800/KUC ONLY
*
606
N1201
‘$X-1900/KUC,SD Q604 : RELAY DRIVE
SX-240/KUC «3
“Re10 10 |
: {_MopEL — |sx-zg00/nuc,sp|sx- 1900/KUC, 50]
4 PARTS NO. \'SK-2800/KUC _|SX-240/KUC
“T RYS61 ASR -112 { ASR- 111
sn eC R608 3.3k.n(2w) | 90N(2w)
$X-2900/K0C,S0 R610 27k (2Ww) | 10 1174W)
‘SX-2800/KUC
7
een
SP_SWITCH
ASSEMBLY
R715
Lc7io }=— th e704
47/10 10/50
R702 R701
10k 3k (1/4)
MSF7BM12L
+
1SRI3Z9~400
C703
1000/35,
rm a
‘SX-2800/KUC
}900/KUC,SD_OMLY
a+ [O
att [
a- Io)
Pa- [ol
Pon= 1°
[ar- |
Tain
AR+ fo!
C]
SP-A
22.8V/8n
‘SX-2900/KUC,SD
‘SX-2800/KUC
17.9V/8N.
‘SX-1900/KUC,SD
) SX-240/KUC
SP-B
$X-2900/KUC,SD
SX-240/KUC ONLY
SX-1900/KUC, SD
SN~240/KUC ONLY
oa eee
AEK- 120
1.25A/125V
AEK -120
1 -25a/i25v |
1a
‘SX-2900/KUC ,SD
SX-2B00/RUC ONLY
Reese ll
[einer
SX-1900/8UC SO
SX-240/KUC ONLY
Oo
)
SX-2900/HUC,SD AND SX-240/KUC ONLY
TRANS
ASSEMBLY
vel
FL fol ba
Ss:
Is Xn
on (Ola 0 I
[acsua ois ft be TI
[pacman [ole te I
FL jo} 49?
He C802
0.1750
#5
MODEL | sx-z900/KuC | Sk-1900/KUC
PARTS NOY Sk-2800/KUG | SI-240/KUC
T1 ATSi248 asi |
AEK-100 AEKIOO4
pur 4A/125V 3ASA/125V
ACHt 137 ACH- 252
C701, C702 | esoour/63V- | 4700uF/50V
V2kn (2W)
roe WrBs__[ nea ew)
“Savon
isr7oa |
Perouse), SX-2900/SD ONLY
ee
o
SX-2900/SD OPENT
SX-1900/SD CUT , |
>
~--4
x*s A\t1 arsizsa
POWER TRANSFORMER
Leos
11
SX-2800/KUC
SX- 1900/RUC,SD
AC POWER CORD
AC 120V 6GOHz
1
iz
i sezs yo
1
iO
1
oO
3
Icaot 2
PpG049-8 PORTE!
°
3
POAT A 2
°
Xe
9k/10k X1/DATA
TEST Xo/CK
(N.C)
3
PORTB} 2
ae meee
8
>For nmo-
PORT I
eee tar aac acess 7
1
RETURN] | SX-2900/KUC,SD
| Sk-2800.KUC
| SK- 240/KUC ONLY
t
g
S
9802,'0803 :
REMO-CON
RECEIVER
AXX1010,
Lo a ah oh Soren et ed,
No part number indicates that the diode corresponds
with HSS104-02.
l 12

SX-2800/ KUC
1900/ KUC,
SD ONLY
@
A
o
AN
.
ie
A
BBO
UE
G
B
A
AC POWER CORD
AC 120V/60Hz
SX -240/ KUC
1900/KUC,SD
ONLY
se
sagas
$X-2800/KUC
ONLY
1900/
KUC,
SD_ONLY
COMPLEX
ASSEMBLY
(AWZ3267)
Q133
Q262
O26]
0153
02
Qisi
Q552
04
Q554
0542
0541
Q553
03
Q551
Q621
Ql
Ic70l
IC131
QIO3
QI32
QI3I
ICI5I
ais2
Q522
9504
Q502
Q514
524
Q513
Q50!
G523
Q503
Q52!
Q622
Q102
Ici
Ic20l
Ic202
IC253
Q601-
Q6d6
Q75I
Qlol
Q752

1 [ 2 ;
1 .RESISTORS
Indicated in Q,1/4W,1/8W, +5%,tolerance unless 5 .SWITCHES
otherwise noted k: kQ, Mt: MQ,(F):+1%,(G):+2%, .
(K)£10% , (M):£20% tolerance. S2 VOLTAGE SELECTOR CONTROL assembly
110/120-127/220/240V S801 FREQ UP
2 CAPACITORS : (SX-2900/SD,SX-1900/SD ONLY) Sate FREQ DOWN
Indicated in capacity(“F)/volutage(V) unless 7 S803 2
otherwise noted P:PF. Se SSE IUE: SY Tk BRR od
Indication without voltage is 50V except electrolytic (SX-2900/SD,Sx-1800/SD ONLY) $805 FN A
capacitor.
S806
AM
. S4 VOLTAGE SELECTOR S807 MEMORY
3 .VOLTAGE CURRENT 220-240V/110/127V S808 MEMORY SCAN
[Wr Signal voltage at (65W+65W 8Q) output (ikHz). (SX-2900/SD ONLY) S809 POP
[L__]: DC voltage (V) at no input signal. S810 ROCK
Value in ( ) is DC voltage at rated pover, SP SWITCH assembly S8il OTHER
<-nA : DC current at no input signal. S570 SPEAKER (SP-A/SP-B) $813 CD
ot POWER S814 TUNER
Sc OTMERS (SX-2800/KUC,SX-1900/KUC,SD ONLY) S815 PHONO
Tepe role $816 AUTO/MONO =
@: Adjusting point
The A mark found on some components parts
indicates the importance of the safety
fuctor of the parts.
Therefore, when replacing, be sure to use
parts of indentical designation.
% marked capacitors and resistors have parts numbers.
S817 AUTO/MANUAL
$818 DIRECT ACCESS
S819 VCR/LINE
$820 TAPEI/DAT
$821 TAPE2/MONITOR
$822 10
$823 §
S824 8
tty - 7 ‘ 1
This
is
the
basic
schematic
diagram,
but
the
actua
$825
RETURN(SX-2900/KUC,
SD,
circuit may vary due to improvements in design. SX-2800/KUC B
SX-240/KUC ONLY)
SCHEMATIC DIAGRAM $826 7
$827 6
(For SX—2900/SD and SX—1900/SD types) ae
$829 4
fee ae
(xe
2900/80)
$830
3
ReRcat $831 POWER (SX-2900/KUC,SD,
Aweanesv SX-240/KUC ONLY)
=
The underline indicates the switch position.
Cc
$X-2900/SD OPENT R707 *& q
SX-1900/SD CUT | F 2.0m (17ew);
tee s
ont 8 Y
AEK~-103(SX-2900/SD) 1S. A
2A/125V
AEK-10418%"1300/80) | al
& | x 5h
eaeaees ==
i]! :
1
$X=2900/SD ONLY __ PF Gamaee @
Hg
4
i
BE.
RORER
CORD.
|
Ars:
£2
ao-tar
-
ATTIOI5
53
;
i
sooner:
D
po FAs oe |
1 O i O - 1 |g AiNOOs ;
me || Dee fed iyi Ti] po pesese, | |
g sx-2800/50 whales cere cet
Ve lads A nites ne | ONL S$X-2900/S0 ONLY
Ie vg J ‘A. AKPIO54
11

4. P.C.BOARDS CONNECTION DIAGRAM
TRANS A A
A POWER TRANSFORMER
$2 eae
VOLTAGE (M) a (M)
SELECTOR
220
ic
S506 780 ONLY
|
4
AC POWER CORD
AC I10/120 - 127
220/ 240V
50/60Hz
COMPLEX ASSEMBLY (SD TYPE) SX-2900/SD ONLY
iz ee at oe
|
) es: ae
O
|. 220-240 fl
| © /10-127V
VOL TAGE SELECTOR
[a es ee]
12

6
|
7
I
8
I
9
i
10
I
41
I
SX -2900/KUC,SD
240/KUC
ONLY
A
[pee
gh
eer
at
eee
POWER
TRANSFORMER
VR
ASSEMBLY
|
isl
EF
| NOTE
1, This P.C.B connection diagram is viewed from the parts mounted side.
| 2. The parts which have been mounted on the board can be replaced with those shown
with
the
corresponding
wiring
symbols
listed
in
the
following
Table.
A
PCB
patern
aman
nenion]
PartName
alae
| g B | s 7 | Radiator type
= = = d = sist
ae eae ene ea
P.C.B. pattern diagram indication
Corresponding part symbol
—~
0203
—
0203
co
Li
—-
|
star
a
;
|
SX-
29007
3.
The
capactor terminal
marked
with
(double
circles)
shows
negatine
termianl.
KUC
LEBEN.
+
Capacitor
4.
The
diode
terminal
marked
with
©
(double
circles)
shows
cathode
side.
|
ONLY
x
Di
oo
(Polarity)
5,
The
transistor
terminal
to
which
E
is
affixed
shows
the
emitter.
TRANS
ASSEMBLY
B
‘ER
CORD
'/60Hz
SX
-
2800/7
KUC
—_
2800/KuC
CONTROL
ASSEMBLY
(AWZ3268)
"T8007
RUE,s0
ony
1900/
KUC,
|
SD_ONLY
|
e
|
|
WW
Y
3
|
YY
wie
i:
|
ZY
L
fe
LA
Lh
te
LLL
LL
ere)
VP)
Be)
Se
eee
2
ear
®
lg
OS
2900/SD OPEN
900/SD CUT Kies
3900 Kue, so
O/ KUG-ONL:
VR3I1
VR312
VR313
VR3I4
VR3I5
VR302
aaa
aaa
Q802
Q803
Ic80l
Qsol
IC3It
=Q3I
Q312
Q313
Q314
§=Q315
Q316
Q317
Q318
319
Q320
IC301
16

at enisegan eworle (e2alotio elduob)@) dsiw beshem Isninnst 10otosqeo sAT SE
.Sbiz sborts6o eworle (zelo1i9 siduob) ©) rziw baasm lenimmet sboib eT 8
-restime ants eworle bexitte 2i 3 doidw ot lenient ioteiensit sdT 8
This
P.C.B.
connection
diagram
is
viewed
from
the
foil
side.
YO 10%2zi291 sldsireV
yorzi2e1 bexit-imee
UN \OOBS - Xe
YINO de, QUN\ \ooe!
aie =
SOE AV
17
st
noitssibni merpsib misttsq .2.9.9
I hr i or I e i 8 i . | | m
d2 , 9UN\00eS -x2
YJUO DUN\OAS
Me ets fo Fa be opt et tg ee ee A
YJGMae2dA AV ABMAOWMAAT AIWOF
aTou
-sbi2 betnuom atisq ert mort bewaiv ai msipsib noitosnnos 4.0.9 2idT
nwor szont ntiw beosiqs) 9d nso bisod art no bstnuom nesd sven doidw ensq siT Sf |
.aidsT pniwollot ert ni betail elodmyz pnitiw enibnogesnios art dtiw
[omens | lodmye n16q enibnogesn0D noissoibni msipsib msttsq 6.9.9
gene <
yoszizneiT
10
o3
— é0sa
“©
ae
= Soi eae
a
DUN\O08S- xX
| ,9UN\O0e!
; YIMO G2
bani
\o0es
-xe
he
IMO
| UM
rotiosqe) : er@>
(ytinslog-no)
YJSMI22A 2VAAT
Z
GHOD AS3WOG
sHOO\VOSI
a
(S8SESWA)
YJaMa22A
JOATNOD
Rateouece
UA \O0eI
IO. de\o0
eo dge\o0el
@®)
clERV BIEAV EleAv SIZAV HleAav
OSEO eC1EO BIEO TIEO BIEO eIEO AIEO ElEO
10E5I SIEOIIEO ESI 1080 108951 €080 S080 ee ee Sg
| rr | or 1 e | 8 | v | ro)

YJaMs2eA HOTIWe Ye
DUN \O008S - X2
UM \O0€!
YIMO G2
re d2,2Ux\00eS- x2
r
| 301\008$ EO re a
YIMO
A
GAOD AAWOF DA
sHOO\VOSI DA
/
de ,UAroges-xe
QUA\O08S-xX2 OES
DUx\O0E! iat
YIMO_G2
QUA\OBS- x2
G2, dUN\O0E!
YJMO
sala, OBO Ngagmad
BP WSS ABIDES
UXNOBS = Xe"
DN nee
u3zq0 de\oo0e:
TUS Ge\oo0e
(YOSESWA) YJIEMIeeA X3IJIMOD
Ke)
¥e)]
10
1Se0
1cco
EO
EeEO
IHEO.
SHTO
HECO
£0
seco
1clo
SO
E210
1aSO
SA8SO
EEI1O
S$s30
1S@O
EOZ@O
ESGO
10GO
ElGO
ASCO
FIFO
SOEO
ABOTO
SSCO
S2lo
1@1D1
1EIO
SEIO
EOI
1EldI
leyv,o
90980
—
1000
€@sol
sOosol
1osol
HHO
solo
Sevo
1010

=> Gr—t— |e] s)
5. P.C.B ’s PARTS LIST
NOTES:
© Parts without part number cannot be supplied.
© Parts marked by “®” are not always kept in stock. Their delivery time may be longer than usual or they may be unavail-
able.
e 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.
© When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex. 1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J =
5%, and K = 10%).
5602 56 X 10! SOT. scntissteatenis RDI4PSH @ OJ
47kQ 47 X 10? ARG deissstacieaseicteues RDI4PS@a BJ
0.52 ORS. ress caetteciveazsucdicesscodivatass (uskoeties RN2HO BGK
12 OO ci icieetsctaticetescrnin ei asctias RSIP@ WO) K
Ex. 2 When there are 3 effective digits (such as in high precision metal film resistors).
S.62k2 S62 X10! — SO 2D eeeesesscessseseseseeee RNIASRO AO F
Mark No. Description Parts No. Mark No. Description Parts No.
SP SWITCH ASSEMBLY OTHERS
SWITCH CN7 CONNECTOR(9P) KPC9
$570 PUSH SWITCH SUJ5LXYS CNS Deer eee
CAPACITOR
C571 ELECTR.CAPACITOR CEAS010M50
@ COMPLEX ASSEMBLY (AWZ3267)
RESISTORS SEMICONDUCTORS
R570, 571. METAL OXIDE RSIPMF331J
BEMSTOR IC111 AM/FM IC LA1265S
1C131 PLL IC LM7001
IC151 MPX IC AN7470P
OTGERS 1C201 OP-AMP IC RC4558DXP
JACK (HEAD PHONE) AKN1002 1C202 E-SW IC TC9164N
1C253 OP-AMP IC NJM4558S-X
IC701 REGULATOR IC MS5F78M12L
VR ASSEMBLY
SEMICONDUCTORS Q101 TRANSISTOR 2SC2668
Q102, 103 TRANSISTOR RN2201
1C361 MECHANISM DRIVER 1TA7291S Q131 N-FET 2SK246
IC Q132 TRANSISTOR 2SC1740SLN
Q133 TRANSISTOR 2SC1740S
Q361 TRANSISTOR RN1203
Qi51, 152 TRANSISTOR 2SC1740S
COILS Q153 TRANSISTOR 2SA933S
L361, 362 AXIALINDUCTOR —LAUI01K 261 262) TRANSBTOR yee
: Q501—504 TRANSISTOR 2SA992
CAPACITORS Q513,514 TRANSISTOR 2SC1845
C361 ELECTR.CAPACITOR CEAS470M50 Q521, 522 TRANSISTOR 2SA1145
C362, 363 CERAMIC CAPACITOR CKDYF473Z50 Q523, 524 TRANSISTOR 2SC2705
C364 CERAMIC CAPACITOR CKDYX104M25 Q541, 542 TRANSISTOR 2SC2458
Q551, 552 TRANSISTOR 2SC3298
RESISTORS Q553, 554 TRANSISTOR 2SA1306
VR361 VARIABLE RESISTOR ACX1035
Q601, 6022 TRANSISTOR 2SC2458
Other resistors RD1/8PMOOL Q603 TRANSISTOR 25A1048
Q604 TRANSISTOR . 2SC2240
21

Mark No.
Description
Q605 TRANSISTOR
Q606 TRANSISTOR
Q621,622 TRANSISTOR
Q751 TRANSISTOR
Q752 TRANSISTOR
Dill—115 DIODE
D513,514 DIODE
D521—524 DIODE
D601 ZENER DIODE
D621—624 DIODE
D701 DIODE
D702, 703 DIODE
D704 ZENER DIODE
D705 ZENER DIODE
D706 ZENER DIODE
D708—710 DIODE
D711 ZENER DIODE
D712 ZENER DIODE
D713 DIODE
D714 DIODE
D751, 752 DIODE
D753 ZENER DIODE
D754, 757 DIODE
RELAIES
RY561 RELAY
RY751 RELAY
COILS & TRANSFORMER
F101, 102
F1ll
Lill
L131
L561, 562
T751
CAPACITORS
C101
C103, 104
C105, 106
C107
C108
C109
C111, 112
C113
C114
C115
C116
Ci17
C118
Ci19
C120
22
CERAMIC FILTER
CERAMIC FILTER
comt
AXIAL INDUCTOR
COIL
POWER
TRANSFORMER
CERAMIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
ELECTR.CAPACITOR
Parts No.
RN1203
RN1201
28C2240
RN1201
28C2458
188252
HSS104-02
HSS104-02
HZS12AL
HSS104-02
4D4B44
1SR139-400
HZS12AL
HZS24-2L
HZS6B2L
HSS104-02
HZS7B2L
HZS6B2L
15R139-400
HSS104-02
1SR139-400
HZS6A2L
HSS104-02
ASR-112
ASR1027
ATF-126
ATF-208
ATE-079
LAU2R2M
ATH1004
ATT1011
ACG1021
ACG1021
CKDYF223Z50
CKDYF473Z50
CKDYF102Z50
CKDYX104M25
CKDYF223Z50
CEAS330M16
ACG1021
CKDYF103Z50
CEAS010M50
ACG1018
CKDYF103Z50
CEAS100M50
CEAS2R2M50
Mark No.
C121
C122
C123
C124
C125
C131, 132
C133
C134
C135
C136
C137
C138
C140
C141
C151
C152
C153, 154
C155, 156
C157, 158
C159
C160
C161
C162
C163
C164
C201
C231, 232
C233, 234
C235, 236
C237, 238
C239, 240
C241, 242
C243—246
C247,.248
C249
C251, 252
C253, 254
C256, 257
C501, 502
C503, 504
C505, 506
C508
C521, 522
C523, 524
C525, 526
Description
Parts No.
CERAMIC CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
ELECTR.CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
AUDIO FILM
CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
CERAMIC CAPACITOR
MYLOR FILM
CAPACITOR
ELECTR.CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
ELECTROLYTIC
CAPACIT
ELECTR.CAPACITOR
CAPACITOR
ELECTR.CAPACITOR
ELECTR.CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
MYLOR FILM
CAPACITOR
MYLOR FILM
CAPACITOR
ELECTR.CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
ELECTR.CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
ELECTR.CAPACITOR
ELECTR.CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
CKDYF222Z50
CKDYF473Z50
CEAS4R7M50
CEAS470M10
ACG1021
CCDCH150J50
ACG1021
CKDYF103Z50
ACG1016
CEAS330M16
CFT XA224J50
ACG1021
CEAS470M16
CKDYF473Z50
CEANP4R7M35
CKDYF473Z50
CQMA152J50
CEAS4R7M50
CKDYB182K50
CEAS470M16
ACG1021
CEASR22M50
CEAS1R5M50
CEAS3R3M50
ACE1039
CEAS010M50
CEAS100M50
CCCSL221J50
CEAS470M10
CQMA242J50
CQMA822K50
CEAS2R2M50
CKDYF103Z50
CKCYB331K50
CKCYB471K50
CEAS2R2M50
CEAS4R7M50
CKDYF103Z50
CEAS2R2M50
CKDYB102K50
CKDYB681K50
CEASi01M16
CEAS220M16
CCCSL120K500
CCCSL050C500

Mark No.
A
C551 ~—554
C561, 562
C601
C602
C603
C604
C605
C621, 622
C701, 702
C703
C704
C705
C706
C707
C708
C709
C710
C751
C752
C753
C754
RESISTORS
> &
>>
VRi51
R521, 522
R523
R527, 528
R531, 532
R535, 536
R551—554
R555—558
R561, 562
R563, 564
R565, 566
R608
R610
R625
Description Parts No.
CERAMIC CAPACITOR CCCSL101K500
MYLOR FILM CQMA473K50
CAPACITOR
ELECTROLYTIC CEAS471M6
CAPACIT
CERAMIC CAPACITOR CKDYF103Z50
ELECTR.CAPACITOR CEAS101Mi6
ELECTROLYTIC CEAS2R2M100
CAPACIT
ELECTR.CAPACITOR CEAS4R7M50
ELECTR.CAPACITOR CEAS2R2M50
ELECTROLYTIC ACH1137
CAPACIT
ELECTROLYTIC CEAS102M35
CAPACIT
ELECTR.CAPACITOR CEAS100M50
ELECTROLYTIC CEAS470M35
CAPACIT
ELECTR.CAPACITOR CEAS101M25
CEA (47000/5.5V) ACH1037
CKA (0.01/AC400V) ACG1002
CKA (0.01/AC250V) ACG1005
ELECTR.CAPACITOR CEAS470M10
CKA (0.01/AC250V) ACG1005
ELECTROLYTIC CEAS471M25
CAPACIT
ELECTR.CAPACITOR CEAS470M10
CKA (0.01/AC400V) ACG1002
VR (4.7K) ACP1024
CARBON FILM RD1/4PM432J
RESISTOR
CARBON FILM RD1/4PM104}
RESISTOR
CARBON FILM RD1/4PMF680J
RESISTOR
CARBON FILM RD1/4PM152]
RESISTER
FUSLIBLE RESISTOR RFAI/4PS101J
FUSLIBLE RESISTOR RFA1/4PS101J
CARBON FILM RD1/4PMF101J
RESISTOR
RESISTOR (0.33, 5W) = ACN-139
CARBON FILM RD1/4PMF1i00J
RESISTOR
CARBON FILM RD1/4PMF100J
RESISTOR -
METAL OXIDE RS2LMF332J
RESISTOR
METAL OXIDE RS2LMF272J
RESISTOR
CARBON FILM RDI/4PMFI101J
RESISTOR
Mark No. Description Parts No.
R701 CARBON FILM RD1/4PM302J
RESISTOR
A R703 METAL OXIDE RS2LMF182J
RESISTOR
R707 RESISTOR (2.2M, 1/2W) ACN-209
A R715 METAL OXIDE RSILMF151J
RESISTOR
R751 CARBON FILM RDLU/2PM821j
RESISTOR
R752 CARBON FILM RD1/2PM470J
RESISTOR
Other resistors RD1/8PMLILID
OTHERS
ANTENNA TERMINAL AKA1009
4-P
PIN JACK (4P) AKB1101
PIN JACK (6P) AKB1121
SPEAKER TERMINAL AKE-i11
8-P
JACK (2P) AKN1006
A AC OUTLET (1P) AKP1054
2 SERIAL F.E. MODULE AXQ1002
ASSY
AM RF TUNING BLOCK AXX1011
X131 CRYSTAL ASS1005
RESONATOR
© CONTROL ASSEMBLY (AWZ3268)
SEMICONDUCTORS
IC301, 311 OP—AMP IC NJM4558S —X
1C801 RECEIVER CONTROL PDG049-—B
Q311-—320 TRANSISTOR 2SC1740SLN
Q801 TRANSISTOR RN1203
Q802, 803 TRANSISTOR 2SC1740SLN
D802 DIODE HSS104—02
SWITCHES
$801—811 SWITCH ASG1034
§$813—831 SWITCH ASG1034
CAPACITORS
C301, 302 + ELECTR.CAPACITOR CEAS470M50
C303, 304. CERAMIC CAPACITOR CCCSL220J50
C307, 308 CERAMIC CAPACITOR CKDYF103Z50
C311, 312 AUDIO FILM CFTXA334J50
CAPADITOR
C313, 314. MYLOR FILM CQMA393K50
CAPACITOR
23

SxX-2900
Mark No. Description Parts No.
C315, 316 AUDIO FILM CFTXA124j50
CAPACITOR
C317, 318 MYLOR FILM CQMAL103K50
CAPACITOR
C319, 320 MYLOR FILM CQMA393K50
CAPACITOR
C321, 322 MYLOR FILM CQMA392K50
CAPACITOR
C323, 324 MYLOR FILM CQMA153J50
CAPACITOR
C325, 326. CERAMIC CAPACITOR CKDYB102K50
C327, 328 ©MYLOR FILM CQMA332K50
CAPACITOR
C329, 330 CERAMIC CAPACITOR CKDYB471K50
C339, 340 CERAMIC CAPACITOR CCCSL101J50
C343, 345 ELECTR.CAPACITOR CEAS101M16
C801 ELECTROLYTIC CEJA4R7M50
CAPACIT
C802 ELECTROLYTIC CEJAOR1M50
CAPACIT
C803 ELECTR.CAPACITOR CEJA221M6
C804 CERAMIC CAPACITOR CKDYF103Z50
C805 CERAMIC CAPACITOR CKDYF473Z50
~ €807,808 CERAMIC CAPACITOR CKDYF473Z50
C809 ELECTROLYTIC CEJA100M35
CAPACIT
RESISTORS
VR302 VARIABLE (500k—X1) ACS1046
VR311--315 VR ACU1020
Other resistors RD1/8BPMUOIDJ
OTHERS
FL SPACER AEB1120
REMOTE RECEIVER AXX1010
UNIT
V801 FL TUBE AAV1090
X801 CERAMIC ASS1022
OSCILLATOR
TRANS ASSEMBLY
No parts are supplied with the TRANS ASSEMBLY.
a4

=) Gr—t— lela)
6. ADJUSTMENTS
TUNER SECTION
e Set the volume to“MIN”,
¢ Set the FUNCTION to“TUNER’.
OUTPUT
(TAPE1/DAT REC)
$X-2900
$X-—2800
SX-—1900
50(75)/300Q
PAD
AC voltmeter
Distortion
meter
Frequency
counter
Digital
voltmeter
Oscilloscope
Fig. 6-1 FM adjustment wiring diagram
AM antenna terminal QUTPUT(TAPE1/DAT REC)
$X-2900
SX-2800
SX-1900
SX-240
Loop
antenna
Loop
antenna
Fig. 6-2 AM adjustment wiring diagram
Complex assembly
Fig. 6-3 Adjustment locations
25

xX-2900
FM
TUNER
SECTION
ADJUSTMENT
e
For
connections
and
points
to
be
adjusted,
refer
to
Fig.
6—1
and
6—3.
e Set the BAND selector to“FM”.
¢
Perform
VCO
adjustment
after
turning
the
power
ON,
two
minutes
or
more.
Note: Stereo modulation: Main 1kHz L+R+68.25Hz dev.
Pilot 19kHz +6.75kHz dev.
FM SG (1kHz +75kHz dev.) | SX—2900,2800 Adjustment
eoeatean 1900,240
justment Title Recepti :
ption Fre- | Adjustment Roost
Frequency {MHz} quency Display | Location Specifications
Detector
coil
T-meter
Adjust
so
that
the
DC
voltage
adjustment
98.0
98.0MHz
L111
between
TP21
and
TP22
is
0
(MONO) +50mv.
Checking
front
end
Check
that
the
practical
sensitivity
(MONO)
HeOMne
sensitivity
is
10
dBzV
or
less.
, Adjust so that the frequency
MEU
SCIUEEn
ett
98.0MHz
VR151
|
between
TP23
and
GND
is
76
(MONO) | (No modulation) +0.5kHz
Checking
stereo
distortion
Check
that
the
stereo
distortion
(STEREO)
eerOMne
is
1.5%
or!
Stereo
modulation
(Note)
mee
Peon
Checking
separation
98.0MHz
Check
that
the
separation
is
25
{STEREO)
;
.
dB
or
more
(at 1kHz).
Check lighting level of ee ae
TUNED
and
they
Ne
.
98.0MHz
FOR
STEREO
IND.
£3
dB
of
TUNED IND. lighting level.
%*1. Remove the R121 (11kQ) from the complex assembly if the Tuning indicator fails of light up.
AM TUNER SECTION ADJUSTMENT
*
For
connections
and
points
to
be
adjusted,
refer
to
Fig.
6-2
and
6—3.
e Set the BAND selector to“AM”
4900,240
Reception Fre- | Adjustment Scecificatt
quency Display | Location pecaeatons
Check that the practical
tee pS sensitivity is 75 dBuzV/m or less.
Check
lighting
level
of
R120
TUNED
IND.
1000kHz
*2
65dBuV/m
or
less
*2,
Remove
the
R120
(5.6kQ}
from
the
complex
assembly
if
the
Tuning
indicator
fails
of
light
up.
25

6. REGLAGE
SECTION TUNER
¢ Régier le volume sur “MIN”.
¢ Régler le sélecteur de fonction sur “TUNER”.
SORTIE
(TAPE 1/DAT REC)
$X~-2900
50(75)/300Q
SX
—2800
PAD
$X—1900
Voltmatre
CA
Bornes d’antenne FM 300Q Compteur de
distorsion
Voltmétre
numérique
Compteur de
fréquence
Oscilloscope
Fig. 6-1 Diagramme de céblage de réglage FM
Borne d’antenne AM SORTIE(TAPE 1/DAT REC)
Voltmetre CA
$X-2900
SX-2800
SX-—1900
SX-—240
Antenne~cadre Antenne-cadre
Fig. 6—2 Diagramma de cablage de réglage AM
Ensemble complexe
Fig. 6-3 Emplacements de réglage
27