Sanyo DXT 5004 Service Manual
SERVICE
MANUAL
STEREO
MUSIC
SYSTEM
DXT
50 04
(usn)
FM TUNER
SECTION
Frequency Range
S/N 30dB Sensitivity
Limiting Sensitivity
lmage
Rejection
I
F Rejection
Spurious
Rejection
Selectivity
(lHF)
Electrical
Fidelity
Harmonic
Distortion Mono
Stereo
Stereo Separation
(
1,O00Hz)
Tracking Error
AM TUNER
SECTTION
Frequency Range
Usable
Sensitiviw
(lH
F)
Selectivity
(lHF)
lmage Rejection
(1,000kH2)
lF
Rejection
(1
.O00kHz)
Signal
to
Noise Ratio
Tracking
Error
AUDIO
SECTION
Continuous Power
Output
(8
ohml
Both Channel Driven @1
,000H2
Both
Channel Driven @150
to
20kHz
Each
Channel Driven @1,000H2
SPECI
FICATIONS
(
Nominal)
Harmonic
Distortion @
Rated Power
Power
Bandwidth
Frequency Response
(+3dB
Aux.)
Input Sensitivity/l mpedance AU
X
Phono
Output Voltage
Tone Control Bass
at
1 00Hz
Treble
at
10kHz
Signal to
Noise Ratio AUX
Phono
8
TRACK TAPE RECORDER
SECTION
Frequency Response
(PB)
Distortion
Signal to
Noise Ratio
Channel Balance
C
rossta I k
Channel Seoaration
Tape
Speed
(3-3/4
ips)
Wow
and
Flutter
(RMS
Unweighted NABI
GENEBAL
SECTION
Power
Requirement
Dimension width
Depth
Height
SBMHz to
108MHz
15,qV
30
/V
27dB
60dB
50dB
1 sdB
40/15k4z
1.ff/o
1.5%
20dB
2O0kHz
535kHz to
1,605kH2
300
pVlm
23dB
40dB
40dB
40dB
30kHz
2.2/2.2W
2.2/2.2w
2.5/2.5W
2.Oo/o
1 50
-
20kHz
10
-
25kHz
18OmV/100k ohm
30OmV/1M ohm
300mV
-10d8
-10d8
65dB
55dB
60
-
1OkHz
3.e/.
42dB
1.0d8
45dB
35dB
+3o/o
o.2%
AC
12OV,6OHZ
480mm
365mm
230mm
(WDust
Cover)
-Specifications
are
subject
to change
without notice,-
wM-2001
AM-FM RF/IF AMP/M-PX
ADJUSTMENT
1 .
Variable caoacitor
completelv
closed.
4' Function switch to
"AM."
2. Set the dial
pointer
to
very left
line dial scale.
5. Use a
screwdriver
with
plastic
grip
for all adiustments.
3.
Connect
sweep
generator,
SG,
V.T.V.M. and
oscilloscope.
AM
ADJUSTMENT
Step
Adjusting
c ircu
it
Connection
SG.
frequencv
Position of
tuning
dial
Adiustment
V.T.V.M.
Oscilloscope
I
nput
Output
F
Connect
sweep
gene-
rator to VC4.
Connect oscilloscope
to rest ooint
TP2
455 KHz
Near
max, capa-
city
of
VC at
position
with
no
signal.
AM
'lst
9-21160
(Yellowl
AM 2nd
9-21170
(Whitel
AM 3rd 9-21180
455 KHz
z
RF
Connect
standard
loop antenna to
output terminal
of SG.
Place receiver 2
feet
from loop antenna
Connect
V.T.V,M.
to TP2
600 KHz
(4OOHz.
3O
%
modulation)
600 KHz
AM ANT
9-25030
AM OSC
9-2081
0(Red)
Max.
1400 KHz
{400H2,
30
%
modulationl
1400
KHz
TC
AM
OSC
TC
AM
ANT
Max.
4 Repeat adiustments
FM ADJUSTMENT
Step
Adjusting
circuit
Connection
SG.frequency
Position
of
tuning dial
Adiustment
V.T.V.M.
Oscilloscope
I
npul
Output
F
Connect
sweep
gene-
rator
to test
point
TP 5 through 0,01!F
Connect
oscilloscope
to
test
ooint TP3
10.7 MHz
(none
modula-
tion )
Near
max.capa-
city of
VC. at
position
with no
si
gnal.
FM 1st9-21130
(Orange)
FM
2nd
9-21140
(Blackl
A
10.7MHz
2
Ratio
Det,
Connect oscilloscope
to test Doint
TP3
FM DET
9-20850(Pink
)
9-21150(Bluel
10.7MHz
3
RF
Connect
FM SG.
to
FM
ANT terminals.
Connect V.T.V.M.
to speaker terminal.
90
MHz
(4O0
Hz, 30
%
modulationl
90
MHz
FM ANT
9.2112O
FM OSC
9-20800
FM Coil 9-20370
Max.
4
106
MHz
{400
Hz, 30
%
modulation)
106 MHz
TC FM
OSC
TC
FM CRF
Max.
5
Repeat adjustments.
1.
Variable capacitor completely
closed.
2. Set
the
dial
pointer
to very left
line
of dial
scale.
3.
Connect
sweep
generator,
FM
SG,
V.T.V.M.
and
oscilloscope.
FM ANT
input
impedance is
3O0
ohm.
1- Variable capacitor completely closed.
2. Connect
FM
stereo
SG
and
V.T.V.M.
4. Funcrion switch to
"FM
AUTO".
5.
Use a screwdriver
with
plastic grip
for all adiustments.
3.
Function switch to
"FM
AUTO".
4. Use a
screwdriver
with
plastic
Arip
for
all adiustments.
-1-
FM
MPX ADJUSTMENT
Step
Adjusting
circu
it
Connection
Position of
tuning
dial
Adiustment
Inpul
Output
1
PLL
IC
FO
(19
KHz)
Adiustment
None
Connect
Frequency
counter or
synchro-
scope to TP4
Near
max. capa-
city
of
VC. at
position
with
no
signal.
Adjust
VR02
(5K-B)
so that
19 KHz may
be
indicated
on the
f requency counter
or synchroscope.
2
FM STEREO
Signal
Separation
Connect
FMstereo
SG to
FM
ANT terminals.
19 KHz signal
ON. Main
channel, sub
channel
signal ON.
Add 100O
Hz signal
from L
Ch.
Connect
V.T.V.M. to
output
terminal
(R
channel).
Connect
FM
stereo
SG to
FM
ANT terminals.
19
KHz
signal
ON.
Main channel, sub
channel
signal ON.
Add 10OO
Hz
signal
from
R
Ch.
Connect
V.T.V.M.
to
output
terminal
(L
channell
3 Repeat steps 2, Set
at
position
with
max.
channel
separation,
lJ
ALIGNMENT
WAVE FORMS
WITH
OSCILLOSCOPE
TIME BASE
SETTINGS
S-CURVE
V.rtic.l
S€nritivity:
0.sv/cm.
Horizonbl
Sweep:
100 u.e./cm.
AM-FM
RF/|F
MPX
BOARD LAYOUT
TOP
VIEW
-2-
FM IF
CURVE
_i
f_
rooxnz
SINE
WAVE
__l
f_
roo KHz
Vertical
SensitiYity:
0.5V/cm.
Horizonul
Sweep:
100 usec./cm
-----|
rF
FREO
FM IF
ALIGNMENT
FM
DETECTOR
ALIGNMENT
Vertical
Sensitivity:
0.5v/cm.
Horizonbl Sweeo: 500
usec./cm.
AM IF CURVE
SYMMETRICAL
TUNING
Vertical
Sen.iriviv: 0.5v/cm.
Horizonbl
Sweeo: 100
u*c./cm.
SQUARE WAVE
MPX F R.F.C.
ADJUSTMENT
Vertical Sensiiivityi 0.5v/cm.
Horizonul
Sensitivity:
0.sv/cm
v
I
FM DET FM DET.
9-2il50 9-20850
FM
lF Znd.
AM lF 3rd.
g-2ll4'
9-2ll8o
FM lF
lct
9-2il30
e
AM
FM
RF/|F
MPX
P.C.BOARD
FM ANTENNA
IN
PUT
o to |
2sc930
D
OIOZ
2SC93O D
or E
QlO3
2SC929
E
or
F
OlO4
2SC536 D
or E
lclol
LAl2Ol
BH
or CH
tcto2
LA3350
B
FUNCTION
SW. BACK
(
s- t) PtN No,7
FM
f+€-rZvl
Drot r03 tst88 FMI
Dros ts555
T
Dfo4 DS-4.42
Dto6
,
fo7
Ds-442
v.
?
I
sr33
I
O- RF lF
MPX
f+€
rZVl
F._:t
+t]iF-31'"1
.i:+
#
+
T
.-+'-
:T'L':
,t""
E.ito,
c,si'
'1,"".
Siii
;;l
l.;r""" @
- "Ir"
J-*;
H,;l l:-*g-
v
F
QtoS
a
cilg
\
-rquf-
o.o47
v Flf
./Wb
o.2z
sr
X.?
..----------3
crer
-;F
,.
vRro2
<
'
-,,Lct5o
g
5r(-8
e
g
_Tl
-.|
l--
cil7 00
n
P
AM BAR
ANTENNA
BOTTOM VIEW
v
ARTS
LIST
NOTES:
1.
Part
orders
must
contain
Model Number. Part
Number and
Description,
2. Ordering
quantity
of
screws and/or resistors
must
be
multiple of
10
pcs.
Ref.No,
Part
No.
Description
o'ty
AM/FM
RF/IF
MPX PCB
Assy
VRO2
VROl
131
0 4001 69100
4 2229 24040
4 2229
24920
4 2249 20500
4 2539 20270
4 2569 20850
4 2569 21130
4 2569 21140
4 2569 21150
4 2569 21160
4 2569 21170
4
2569
21180
4 2579 21120
4
2589 20800
4 2589 20810
4
2599 20370
RF,lF,
MPX
PC Assy
VR 5KBx1
Sepacon
VR B-50Kx1
lC Bias
Variable
Capacitor
lF Trap
Coil
FM lF
Voice lF
Trans
FM
DET
lF
Trans
FM
1st
I
F Trans
FM
2nd
lF Trans
FM
DET
lF Trans
AM
lst
lF
Trans
AM
2nd
lF Trans
AM
3rd
Antenna
Coil
FM
OSC Coil
FM
OSC
Coil AM
RF Coil Trans
FM
]APACITORS
c01
wvz
c03,14
1 5,19
cu,44
47
,54
c05,06
11
co7
c08
c09
C,I
HCSK4TOSL
c1HCSKl01SL
C1
HYSZ473A
C1AUBX224A
c1HYSZ222A
C1
HCSJl
5OSL
c1
HCDC020CK
c1
HCSK300CH
Ceramic 47pF
50V
+10%
Ceramic
100pF
50V
*10o/o
Ceramic
O.O47
pF 50V
+80,-20
%
Alsicon O.22
pF lov
+4O,-2Oo/o
Ceramic
O.OO22
pF
sOV
+4O,-2Oo/o
Ceramic
15pF 50V
*5o/o
Ceramic
2pF 50V
!O25
o/o
Ceramic
30pF 50V
+1Oo/o
,l
,l
11
4
1
1
1
:lef
.No
Part
No.
Description
o'ty
CAPACITOBS
c10
c13
L to
c17]8
c20,22
25,31
c23
uz4
,Jz
c26,38
c27,28
c29
c30,39
50,51
c33,34
53
c35,36
37
c40
c41
c42
.AA
c44,49
c52
C1HCSK471SL
c'l
Hcsc030cJ
C
1 HCSJ2OOTJ
C1 HCDDl OOSL
ClHBDMlO3V
C1
HYSZ473A
ClHBDMlO2V
c1BBDZ204TY
C1
HYSZl O3A
Cl ARB-1064
C
1 H BDM223V
COJ
RB-2264
Cl
ARB-105A
C1
HYSZ473A
ClHCSK331SL
c1cR84764
ClAUBXl
O5A
C1HFRM473A
C1 AUBX474A
C-I
HSEKl52A
C 1
H FRM223A
c1
HCDD050CH
Ceramic 470pF
50V
!1O
o/o
Ceramic 3pF
sOV
!O.25Y"
Ceramic
20pF
50V
+5
o/o
Ceramic lOpF 50V
tO5%
Semiconductor 0.01
pF
50WV
Ceramic O.O47
1F
50V
+80,-20
%
Semiconductor 0.001
!F
50WV
Semiconductor O.2
pF
12v
+8O,-2oo/o
Ceramic 0.01
rF
50V
+80,-20
%
Electrolytic 1O
aF
10V
Semiconductor 0.022
pF
50WV
Electrolytic 22
pF 6.3V
Electrolytic 1
pF
10V
Ceramic O.O47
pF
50V
+80,-20
%
Ceramic
330pF
50V
+1O%
Electrolytic 47
/F
16V
Alsicon 1
pF
10V
+4O,-2Oo/o
Mylar O.O47 pF 50V
+2Oo/o
Alsicon
O.47
pF
1OY
+4O,-2Oo/o
Styrol
15O0pF
50V
+1Oo/o
Mylar O.O22
pF
50V
t2O%
Ceramic SpF 50V
+0.5
o/o
1
1
1
1
2
A
1
1
z
2
2
1
4
1
1
1
1
1
z
1
-3-
v
AM
FM
IF
IC
LA12O1 EOUIVALENT CIRCUIT
f-
ampritie.I
--|-
amptifierll
-f
ampritierI
.J.-
amnritiert+
c-"t"nt--tt+"-l
P
C L
:
Ph6.
CmPorofor
ts Lomg
LPF
:Low Poss
Fill.r
P
C
V
:
Phos6 Comporotor lor VCO
VCO
:
Vollog€
Conlrollad Oscallolor
TUFF
:
Oarcc?
Cdpl.d
Typ.
Flip-llop
NOTES:
1. Part orders must
contain Model Number. Part
Number and
Description.
2. Ordering
quantity
of
screws
and/or
resistors
must
be
multiple of 10
pcs.
TOP
VIEW
U/
FM MPX
IC LA335O
SIGNAL
FLOW
comPosrTE
stGitaL
IN PUT
PARTS
LIST
Ref.No. Part No.
Description
o?
RESISTORS
R01
R02
R03
R04
R05
R06
R07
R08
R09
Rl9
R35
R41
A2EDUJ222A
R2EDUJ124A
R2EDUJl
51A
R2EDUJ221A
R2EDUJ472A
R2EDUJ562A
R2EDUJ682A
R2EDUJl
01A
R2EDUJ3324
R2EDUJ4734
R2EDUJ681A
R2EDUJl
O4A
Carbon
2.2K
1l4W
!5o/o
Carbon 120K
1/4W
!5%
Carbon
15O
1l4W
t5%
Carbon 22O
1l4W
!S%
Carbon
4.7K
1l4W
!5o/o
Carbon
5.6K
1/4W
t5%
Carbon
6.8K 1l4W
+5%
Carbon 1O0
1l4W
t5%
Carbon 3.3K
1l4W
tso/o
Carbon
47K
1/4W
tsyo
Carbon
680
1/4W
+5%
Carbon
100K
'll4W +5%
1
1
1
I
1
1
1
1
'I
1
1
'|
Ref.No,
Part No.
Description
o'ty
SEMICONDUCTORS
DO1
,O2
m
D04,06
07
D05
o01
,02
o03
o04
rc01
tc02
20259110 18820
2055 9040 442'tO
202 5 1000
55310
203
5
5500 93040
203
5 5500 92950
203 5
51
00
53640
20650081 20122
206 5 0743 35012
Diode 188FM1
Diode
DS442
Diode
15553
TR 2SC930
D
TR
2SC929
E
TR
2SC536 D
tc LA1201
tc LA3350
J
J
1
2
,|
I
'l
1
-4-
0ro3
v
9-2il5o
9-20850
AM-FM
RF/tF
MPX
P.C.BOARD
PRINTED
RESISTORS
P.C.BOARD
v_,
fL
a)
TOP
VIEW
Rr20
too
-5-
t-
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