Download SERVICE MANUAL Stereo Receiver

SERVICE MANUAL
ExpGrl
TA-930
Stereo Receiver
SPECIFICATIONS
FM
SECTION
Bange:
Tuning
Usable Sensitivity
Mono:
Stereo:
50 dB Ouieting
Mono:
Stereo:
(lHF)
87.5
2
108
MHz
AUDTO SECTION
Power
Output:
pV
4 ttY
Sensitivity
Ratio
(Mono):
Frequency Response:
Harmonic Distortion
Mono:
Stereo:
Capture Ratio:
-
4
yV
pV
40
Signal-to-Noise
dB
- 1 5,000 Hz (t 2 dB)
0.15%
O.3o/o
1 5 dB
Adjacent Channel Selectivity (r20O kHz)
Minimum:
15 dB
Spurious Response Ratio: 75 dB
lmage Bejection:
55 dB
lF Reiection:
66 dB
AM Suppression Ratio:
50 dB
Muting Threshold:
0.9 - 1 5 pV
Stereo Separation
1,000 Hz:
45 dB
100 - 10,000 Hz:
38 dB
15 pV
Stereo Threshold:
SCA Rejection Ratio:
60 dB
Sub-carrier Suppression: 60 dB
14
40
AM SECTION
Tuning Range MW:
515 - 'l ,620 kHz
Usable Sensitivity MW: 20 ttY
lmage Bejection (MW) :
45 dB
I F Rejection (MW) :
40 dB
Harmonic Distortion: O.5/o
30 watts per channel, minimum
continuous both channels driven into
8 ohms from 40 Hz to 20 kHz with
no more than 0.3% total harmonic
distortion.
Total Harmonic Distortion: Less than 0.3% at rated power into
I ohms (40 Hz to 20 kHz)
lntermodulation Distortion: Less than 0.3% at rated power into 8
ohms (70 Hz :7 kHz = 4 : 1l
Powerband Width:
40 Hz - 20 k{z
0.5 mV
Residual Noise:
Damping Factor:
30 at 8 ohms
lnput Sensitivity/lmpedance
Phono:
2.5 mV/47 kohms
150 mV/47 kohms
AUX:
Tape Play:
150 mV/47 kohms
100 mV (Phono)
Maximum lnput Level:
Signal-to-Noise Ratio (lHF A)
Phono:
64 dB
AUX,
Tape:
Tone Controls
Bass:
Treble:
Loudness Control:
(-30 dB Volume Level)
Low Filter:
Output Level
'Tape-Rec.:
Headphones:
Speaker lmpedance:
84 dB
t 8 dB at 100 Hz
I I dB at 10 kHz
+ 8 dB at 100 Hz
+ 4 dB at 10 kHz
3O Hz (-6 dB/oct.)
'150 mV
350 mV
4 - 16 ohms
GENERAL
Consumption:
Supply:
Dimensions:
Weight (Net):
Power
Power
SPECIFICATIONS AND DESIGN ARE SUBJECT TO CHANGE WITHOUT NOTICE.
120 watts
220V AC, 50 Hz
442(Wl x 385(D) x 130(H) mm
8.8 kg (19.4 lbs.)
153
PARTS LIST
Part No.
INTEGRATED CIRCUITS
LA 1 231
LA335OSS
2SC929 (D) , (E)
2SC1327 (S), (T)
2SC82g (O) , (R)
25861 6 (O) , (R )
2SD586 (O) , (R)
258647 (C) , (D)
25D667 (C) , (D)
Part No.
a set
B F31
& TRANSISTORS
0151
Tra nsistor
Tra nsistor
Tra nsistor
0301 ,302
SFE-1O.7ML
1
1
2SD667A (C), (D)
25D234 (O) , (Y) or
2SC139g (P) , (O) , (R)
2SC 1328 (S) , (T)
o31 3, 314
0309, 310
0201 , 202
Tra nsistor
o401
188AM
W03B or 1N 4OOZ
or V06B
G
31
1
o203
112W, 3.9KO
1W, 1 0Sl
1W, 68O
1W, 3300
4
2
2
2
1
-406,
Silicon Diode
D301
13
-312,
D201-204
4
D 151
1
ZD2O1
1
ZD202
1
2D301 ,302
LED 1 51
141015
141016
FSN 1 067
1 40025
1
4003
1
35006
1
80003
1 80004
1
VR4O4 (BAL)
VR4O2 (BAS)
VR4O1 (TRE)
SVR 101
SVR 151
svR1,152,301
LS & TRANSFORMERS
FM !FT
T 101
FM !FT
T 102
AM IFT
T1
AM IFT
T2
AM IFT
T3
MW OSC Coil
L2
lnductor
11
0400
122022
Co il
Loopstick Antenna
L1
NPT.O3355
Power Transformer
1
1
hoke
1
ESB-7097
ESB.75329
AC ON IOF F Switch
sw-3655009
Rotary Slide Switch
1
1
1
4
R202
R335,336
2
1
R201
R 301
1
4
-304
3A
4
,
4l
Ceram ic
Ceram ic
Ceram ic
Ceram ic
Ceram ic
Ceram ic
Ceram ic
Ceram ic
l
C4
1
05- 1 09, 1 12,
1
13, 115
il),
c209-213
c65
c62
c419, 420
c31 1 ,312
2l
2l
2l
c51 9 ,520
c423, 424
c321 ,322,517
c116
ECN.C4A 1O3M
50v 350PF (J)
Paper,0.01pF
Polystyrene GS%l
cgo
(K)
0.027pF (M)
0.0a7pF (M)
0.o6BpF (M)
0.1pF (M)
1
sOV 0.047pF (K)
50V 0.001rrF (J)
Po
lystyrene (t 1 0%)
My
My
My
My
My
lar lt2Oo/ol
lar (t2Oo/ol
lar lt2O%l
lar (tZOo/ol
lar (t 1 0%)
M y lar (t2Oo/ol
My lar lt5o/ol
c309,
1
Mylar lt5%l
Mylar lt5o/ol
2
2
1
50V o 0033pF (J)
sov 0 015pF (J)
50V 0.039rrF (J)
50V 0 068pF (J)
50V O.12pF (J)
1
1
OTW 1 O0pF
E
1
6TW 33pF
E
1
6TW 1 OpF
1
I
,
;l
31 0
,902
C6
c152
c307, 308
c14
1l
tl
c16
c303-306
il2l
c1 57, 1 58
c153
c409,410, 509
510
1
S8
1
S1
6TW 22pF
6TW 100pF
1 6TW 22OpF
25TW 3.3rrF
25TW 4.7 pF
25TW 47pF
1
1
1
TERMI NALS
1
1
Socket
Ground Terminal
Fuse Clip
Strip Terminal
Dl N Jack
RCA 4-pin Jack
Co -ax ia I
c507, 508
2l
4l
1 ,512
c411-414
c51
My lar lt5o/ol
My lar G1o/ol
My lar (t1o/ol
c425, 426
lectrolytic
c405, 406 ,
a
7)
c401 , 402
417
,
4
1
50TW 1pF
1B
50TW 4.7 pF
50TW47pF
50TW 22OpF
1
1
1
& LAMPS
Fuse
Fu307,308
2A, 50 x 20
F use
Fuse
4A,50 x 20
F U901 , 303,
304
Fu301 ,3O2
F use
F
EMT.226
S ig na
EMT -227
Tun ing Meter
u9O2,
lectrolytic
E lectrolyt ic
E lectrolytic
E lectrolyt ic
E lectrolytic
E lectrolytic
E lectrolytic
E lectrolytic
c505,506
17
2
2
c15
1
c151 , 165
c206 ,208
2
2
c9,
c13
1
c12
c313,314,317,
1
l
4
318
35TW 47pF
42TW 6800pF
50TW O.47 pF
1
1A,50 x20
63TW
50TW
50TW
25TW
2
3
47OpF
O.22pF
0.33pF
4.7 pF
E lectrolyt ic
E lectrolyt ic
E lectrolytic
E lectrolytic
E
lectro lyt ic
lectrolyt ic
E lectrolyt ic
E
E
lectrolytic
Alum. Electrolytic
Alum. Electrolytic
E
lectrolytic, Low Noise
c51 3 ,514
c201
,202
2
c114, 1 55
2
2
c110
1
c111
c31 5,
1
31 6
c205,207 , 209,
501, 502
c203
c154
c156
c407, 408 , 415,
41
2
2
2
5
1
1
1
I
6, 421 , 422,
515,516, 119
50TW 1pF
903
I Meter
1
R329-332
Ceram ic
Ceram ic
1
DIN ANT Socket
3.15A ,5Q x 20
R
FC 33OPF ( K)
FC sOOPF (K)
sov 0.033pF (K)
1
1
FU SES, METE RS
35PF (K)
1
Speaker Terminal
N41 670
3OPF ( K)
50V
50V
50V
50V
1
D5-71 0N -00
205
c 1 , 3 , 7 , 104
50v 1500PF
1
1L4P
7-320,
Ceram ic
Ceram ic
Ceram ic
4
Headphone Jack
s-N 5053
31
518
1
8-pin Jack
vB-oo27
Carbon
Carbon
Carbon
Carbon
Carbon
1
N41287
1784T0301-1
1
R
SC O.O22pF
SC 0.04p F
MC O.O47 pF
FC 2OOPF (K)
1
H LJ -O279-O1-O20
B2-703N -01
D2-71 3N -01
305-308
418
Push SW
&
2
4
6
31 0
R
c2, 8 , 102
c10,11,101
FC lOOPF (K)
SWITCHES
CONNECTORS
R309,
Ceram ic
Ceram ic
FC
FC
2
1
03
L101,102
L301,302
C
Carbon Resistor
Carbon Resistor
Carbon Resistor
0.001pF
SC 0.01pF
500V 0.01 pF
FC12P F (D)
FC 1 sPF (D)
302
co
2
3W, 270A
3W. O.47 A
FC 1SOPF (K)
V R4O3 (VO L)
iometer
iometer
iometer
iometet
Carbon Trimmer
Carbon Trimmer
Carbon Trimmer
5KS}8, BO
1 K SlB, 80
.152
103
2
Potent
Potent
Potent
Potent
2U.KS}B, BO
2
L1 51
CAPACITORS
CONTROLS
F5
EWK -G4A323375
EWK -G4A323854
EW K -G4A32381 5
F1,2
Resistor
Resistor
Resistor
Resistor
Resistor
Wire-wound Resistor
SC
D101,102
Zener D iode
Zener D iode
Zener D iode
L.E.D.
EW K -CPA323B
ic F ilter
ilter
10
Germaniu m D iode
205
DS-442 or 151555
HZ36-2
HZ12-C-3
HZ12-B-2
GLgPR2
3
311, 312
501-504
Silicon Diode
Silicon D iode
P.2OB
F
112W, 56r}
112W, 3300
112w, 3.3KSl
2
2
2
D!ODES
1S
a set
L901-903
RESISTORS
1
Tra nsistor
Transistor
Tra nsistor
Tra nsistor
Ceram
2
0303, 304
0307, 309
0305, 306,
84001
1
4152, 153
Transistor
Transistor
1
312
2SC7g8 (F), (G)
2SCB28A (O) , (R)
Lamp
1
tc103
tc102
o101
Tra nsistor
Tra nsistor
0-50020A
0'ty
Symbol No.
Description
FILTERS
tc101
IC
IC
IC
HA1197
O'ty
Symbol No.
Description
E
lectrolytic, Low Noise
c161-164,319,
M1
1
320, 403, 404,
M2
1
503
-1-
,504
10
153
Part No.
Description
50TW 3.3pF
E
O'ty
Symbo! No.
lectrolytic, Low Noise
Part No.
a set
c1 59, 1 60
2
APPEARANCE PARTS
N
20542
N2O3BB
N
20509
1
Case
1
Rear Panel
N41232
ide Cap, R ig ht
Side Cap, Left
S
N41 233
N41 221-S
N41 281 -S
D ia
I Po inter
N41 665
Pushbutton, Power
Knob Guide
Knob Guide
Knob Guide
Pushbutton
Tuning K nob 44
N41661
N41 666
N41 667
N30228
Knob 21
Knob 21
Knob 19
Front Window
N30209-1 B K
N 30229-3
N30229-4
N41224
N
U
71
2
L
1
F
UNCT ION
Audio Controls
R iver
ne Cord
1
1
FM5OO2A
1
FB127 U 16
1
MP-50
M ica
1
50K
1
No. 18
No.24B
1
oM- 1 53
lnstruction Book
1
1
\
25861 6
lnsulator
/ zsoseo
M ica
I nsu lator
)
,r.1
4
I
1
3eB
1
PACKING MATERIAL
Carton
1
N41668
N 20389
1
N203904
Pad, Left
1
3
N41 321
1
N41424
Pad, Top
Pad D
1
1
N41 31 B
Po
4
N40487
Poly.Bag
1
VOLUME
i
Cord Strain Relief
3P-4
1
D
04
Front
O
7
ial Scale
Foot
204 1 2-1
No.
N41 152A
MISCE LLANEOUS
FM ANT
FM/AM Tuning Unit
1
O'ty
a set
ACC_o1
SR
Front Panel
Symbol No.
Description
Pad,
R
1
ight
1
1
for Unit
for lnst. Book
ly. Bag
1
1
Note: I. Part orders must contain Model Number, Part Number and Descriptlon.
2. Ordering quantity of screws and/or resistors must be multiple of 10 pcs.
3. Resistorsnotdetailedinpartslistareall carbontype,yawatt,Withregardtothevalue,refertotheschematicdiagram.
F RONT WI N
N 30228
DOW
DIAL POINTER
DIAL SCALE
N412215
N
TUNING KNOB 44
N41 665
204 12-1
\,
F
RONT
N41
SIDE CAP,
1
R IV ET
52A
DE CAP,
RIGHT
SI
LE FT
N4 1 233
OrO
N41232
00000
PUSH BUTTON
POWE R
N41 1 01
KNOB GUIDE
N30229-4
21 KNOB
N41 661 N41 667
KNOB
1
9
HEADPHONE JACK
H LJ-0279-01
KNOB GUIDE
N30209-18 K
-020
FRONT PANEL KNOB 21 PUSHBUTTON KNOB GU!DE
N20542
N41661 N41224
N30229-3
\,
SPEAK
E
R TE RM INAL
CASE
LOOPST !C K
ANTENNA
REAR PANEL
N20388 N20509
1784T0301
122022
U
CORD
STRAIN
RELIEF
SR
3P-4
DIN ANT SOCKET
L IN
E COR D
ACC-010
FOOT
DIN JAC K
NO. 7104
D5-71 0N-00
RCA4PIN JAC
N41 670
8-PIN JACK
N41287
-2-
B2-703N -01
K
ROUND
TERMINAL
vB-ooz7
G
CO-AX IAL
SOCKET
D2-713N-01
,
153
ALIGNMENT PROCEDURE (TUNER)
Note:
1.
2.
3.
Signal input must be kept as low as possible to avoid AGC and limiting action.
FM-R F alignment on lower side can not be adjusted since a f ixed coil is employed.
Do not try to adjust f ilters (L151 , 1 52) since their alignment needs special instruments.
Signal Generator
Connection
Output
Dial
Setting
Setting
Adiust for
Adjust
indicato r,
connection
AM.IF ALIGNMENT
Set the f unction selector
to
MW.
Point
470 k Hz
400 Hz (Mod.)
3O%o
of
I
Connect V.T.V.M.
non-inter- I to the TAPE
REC
(Dev. )
T1 (I FT)
T2 (I FT)
T3 (IFT)
O
L2 (MW OSC coil)
L1 (l\ltW ANT coil)
Output
Maximum
utput
MW.RF ALIGNMENT
Set the function selector
to
MW.
Connect V.T.V.M.
600 k Hz
400 Hz (Mod.)
to the TAPE REC
30o/, (Dev.)
jack
Connect V.T.V.M
140 kHz
400 Hz (Mod.
30% (Dev.
)
1
400 kHz
to the TAPE
j
)
R
EC
ack
TC102 (MW OSC
trimmer)
TC101 (MW ANT
trimmer)
Maximum
I
Maximum
Output
Repeat steps (4) and (5).
AM SIGNAL METER ALIGNMENT
Set the f unction selector
1
to MW.
000 kHz
80 dB.
400 Hz (Mod.)
3O%o ( Dev.
1000
I
kHz I SIGNAL
Meter
I
I SVR1
I
I Needledeflection
I as shown in
lFig.
1
)
FM.IF ALIGNMENT
Set the f unction selector
to FM.
Pointof
No signal
no n-i
lFttlt
nter- I
TUNING
meter
1T101 (FM
DISCRI IFT)
ference
Center position
of the meter
sca I e.
98 MHz
Co n nect
60 dB.
1 kHz (Mod.)
d isto rt io n
meter to the TAPE
R EC jack
100%o (Dev.)
T102(Flttt
DISCRI IFT)
Te1 (FM IFT)
M inimum
D istort ion
FM.RF ALIGNMENT
Connect V.T.V.M.
106 M Hz
60 dB.
1 kHz (Mod.)
106 MHz
to the TAPE REC
j
ack
10O% (Dev.)
TC3 (Fm OSC
trimmer)
TC1 (FM ANT
trimmer)
TC2 ( FM R F trimmer)
Maximum
put
O ut
FM SIGNAL METER ALIGNMENT
98 MHz
80 dB.
SIGNAL
98 MHz
meter
Mod ... off
SVR101
Needle deflection
as
shown in
Fig.2
-3-
153
Signal Generator
Dial
#;;sl
Step
Connection
Settin g
I
Output
. -.:'---'
indicator,
connection
:ll^11?1,-
I
I
Adiust for
Adiust
FM MPX PILOT ALIGNMENT
14.
Push the FM MUTING button.
15
No signal
Point of
n-interference
no
uency
Con nect f req
TP
and ground.
counter to
I
I SVR
1
1gkFl
51
t
1OFlz
I
FM STEREO SEPARATION ALIGNMENT
16
Release the FM M tJT I NG button.
17.
(c)
Connect V.T
98 MHz
98 MHz
60 dB
1 ktlz (stereo
mod. L or R)
30% (Dev.)
V.M.
to the TAPE R EC
jack right channel
or left channel.
Left mod. ...
minlmum
right o utput
R ight mod. ...
minlmum left
I
I
SV
R152
I
I
output
ALTGNMENT COMPONENT VIEW (TUNER)
(coMPoNENT SrDE)
L 1 (MW)
'D
IC3
tc2
TCl
oot\ ac
P
!2
ME
e
\
I
IClOl
\
TC1O2
Te1
@
ry
F-l
tr
SVR151
@
Trol
tr1102
SVRlO.r@
g
I
SIGNA
SIGNAL
Fig.
Fig.2
1
-4-
drP
svRr52
153
ALIGNMENT PROCEDURE (TUNER)
Note:
1.
2.
3.
Signal input must be kept as low as possible to avoid AGC and limiting action.
FM-R F alignment on lower side can not be adjusted since a fixed coil is employed.
Do not try to adjust filters (L151 . 152) since their alignment needs special instruments.
Signal Generator
Connection
Output
Dial
Setting
Step
Setting
Adiust for
Adiust
indicator,
connection
AM.IF ALIGNMENT
1
Set the f unction selector
2.
(A)
to
MW
400 Hz (Mod.)
Pornt of
no n- inter-
30To ( Dev.
f
470 kHz
)
jack
erence
MW.
3.
Set
4.
(A)
T1 (IFT)
T2 (I FT)
T3 (IFT)
O
L2 (MW OSC coil)
L1 (MW ANT coil)
Output
Maximum
utput
RF ALIGNMENT
the func tion selector to MW.
600 k Hz
400 Hz (Mod.
30% (Dev
5.
Connect V.T.V.M
to the TAPE R EC
(A)
Connect V.T.V.M
600 kHz
)
to the TAPE REC
jack
)
140 kHz
400 Hz (Mod.
1
)
400 kHz
30/o ( Dev. )
Maximum
02 (MW OSC
Connect V.T.V.M.
TC
to the TAPE R EC
trimmer)
Maximum
jack
TC1O1 (MW ANT
O
1
utput
trimmer)
epeat stepl (41 and (5).
6.
R
7.
Set
the func tion selector to MW.
B
(A)
1 000 kHz
80 dB.
AM SIGNAL METER ALIGNME NT
Needle deflection
1
400 Hz (Mod.
3O%o
000 kHz
SVRl
SIGNAL
Meter
)
as
shown in
Fig
1
(Dev.)
FM. IF ALIGNMENT
9.
Set the f unc tion selector
10.
No signal
to
FM.
Point of
non-inter-
T101 (FM
DISCRI IFT)
FM TUNING
meter
ference
11
(B)
sca I e.
98 MHz
Co n nect
60 dB.
1 kHz (Mod.)
100% (Dev )
Center position
of the meter
98 MHz
distortion
meter to the TAPE
R
T102(FrVr
DISCRI IFT)
Te1 (FM IFT)
M inimum
D istort ion
EC jack
FM. RF ALIGNMENT
12.
(B)
106 M Hz
60 dB.
1 kHz (Mod.)
lOO%o (Dev.
Connect V.T.V.M.
106 MHz
to the TAPE
j
ack
R EC
TC3 (FM OSC
trimmer)
TC1 (FM ANT
Maximum
O
utput
trinimer)
TC2 (FM RF trimmer)
)
FM SIGNA L METER ALIGNME NT
13.
(B)
98 MHz
80 dB.
SIGNAL
98 MHz
meter
Mod ... off
SVR101
Needle deflection
as
shown in
Fig.2
-3-
153
ALIGNMENT PROCEDURE (TUNER)
Note:
1.
2.
3.
Signal input must be kept as low as possible to avoid AGC and limiting action.
FM-R F alignment on lower side can not be adjusted since a f ixed coil is employed.
Do not try to adjust filters (L151 , 152) since their alignment needs special instruments.
Signal Generator
Output
Dial
Setting
indicator,
connection
Adiust for
Adjust
AM.IF ALIGNMENT
Set the f unction selector
to MW.
470 k Hz
400 Hz (Mod.)
Point
30% (Dev.)
f
of I Connect
V.T.V.M.
non-inter- I to the TAPE
erence I jack
REC
T1 (I FT)
T2 (I FT)
T3 (IFT)
O
L2 (MW OSC coil)
L1 (MW ANT coil)
Output
Maximum
utput
MW-RF ALIGNMENT
Set the f unction selector
to
600 k Hz
400 Hz (Mod
MW.
Connect V.T.V.M.
600 kHz
)
k
to the TAPE R EC
TC102 (MW OSC
trimmer)
jack
TC1O1 (MW ANT
Connect V.T V.M
Hz
400 Hz (Mod.)
3O%o ( Dev.
R EC
jack
30o/o (Dev.)
140
to the TAPE
1
400 kHz
)
Maximum
Maximum
put
O ut
trimmer)
Repeat steps (4) and (5).
AM SIGNAL METER ALIGNMENT
Set the function selector
to
MW.
1000 kHz
BO
Needle deflection
1000kHz ISIGNAL
dB
shown in
Fig.
as
400 Hz (Mod.)
3O%o
1
(Dev.)
FM.IF ALIGNMENT
Set the f u nct ion selector
to F M
.
Point of
No signal
n-interference
no
FM TUN I NG
meter
T101 (FM
Center position
DISCRI IFT)
of the meter
sca I e.
98 MHz
Co n nect
60 dB.
1 k Hz (Mod. )
distortion
meter to the TAPE
100%o (Dev.)
R
T1O2 (FM
DISCRI IFT)
Te1 (FM IFT)
M inimum
D istort ion
EC jack
FM.RF ALIGNMENT
106 MHz
60 dB.
1 kHz (Mod.)
Connect V.T.V.M.
106 M Hz
to the TAPE REC
jac k
l)Oo/o (Dev. )
TC3 (FM OSC
trimmer)
TC1 (FN/l ANT
trimmer)
TC2 (FM RF trimmer)
Maximum
O ut
put
FM SIGNAL METER ALIGNMENT
98 MHz
BO
dB.
SIGNAL
98 MHz
meter
SVR101
Needle deflection
as
shown in
Fig.2
Mod ... off
-3-
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