Technics SL-Q303

SL-Q303
Part Name & Description
Checking procedure
1. Solder the condenser to the negative © side of C203,
and connect the CR oscillator to it.
Or, connect the oscillator to the positive ® side of C203.
Part No. Part Name & Description
CAPACITORS
: CR Oscillator ERD25TJ223 1/4W, —-22kQ,
(See Fig. 18) ERD25FJ472 : AW, 4.7kQ, ECEB1HS471 Electrolytic, 50V, 470pF
2. Checking the output of the oscillator on the oscilloscope, ERD25FJ470 5 aw, 479, ECEA25Z4R7 Electrolytic, 25V 4.7 uF
‘ ERD25TJ154 ; 1/4W, 150k, ECKD1H223ZF —_|Ceramic, 50V, 0.022uF, + 13%
adjust
so
that
the
waveform
becomes
as
shown
below.
ERD25TJ223
;
1/4W,
—-:22kQ,
ECKD1H102KB
‘|
Ceramic,
50V,
0.001NF,
+
10%
eras, eee EEL ERD25FJ102 : 1/4w, 1kQ, ECQM1H104KZ_ Polyester, SOV, O.1uF, + 10%
20ms. ERD25FJ332 : 1/4W, — 3.3kQ, ECQM1H104KZ_ |Polyester, — 50V, O.1uF, + 10%
ERD25FJ221 : 1/4w, 2202, ECEA1CS330 Electrolytic, 16V, 33 uF
VP-P 20mV ERD25FJ471 : 1/4wW, 4702, ECEA1AS470 Electrolytic, 10V, 47yF
50Hz To Ground ERD25TJ124 1/4W, 120kQ, CECI Naz Ceramic, 25V, our, + 38%
. ECEA1CS330 Electrolytic, 16V, 33uF
; (1201 Terminal (8) ) ERD25FJ272 , TAN, 2.7K, ECEASOZ1 Electrolytic, 50V. Tur
3. Measure the waves at terminals (3) , @ , @® of 1C201. ERD25TJ223 : 1/4W, = 22k, ECEA50Z1 Electrolytic, SOV, 1 uF
/ ERD25TJ473 : 1/4W, — 47kQ,
When the output waveforms are as shown below, the ERD26F.1472 ; AW, 4.79. SeOuinaraee Bak. “waaane.
control circuit is normal. ERD25TJ104 7 1/4W, 100kQ, ECEA1ES470 ic, 25V, 47 uF
Was ‘ ERD25FJ103 , 1/4W, 10kQ, ECEA50Z1 ic, 50V, Tyr
However,
because
of
ther
stability
of
the
CR
oscillator,
ERD25TJ563
‘
aw.
56k.
ECEAOJS471
ic,
6.3V.
A70UF
the waveforms are not the same as those in normal Oscilloscope ERD25TJ183 : 1/4W, = 18kQ, ECEA1AS470 10V, 47 uF
rotation 3 ERD25FJ181 : 1/4W, 1802, C210 ECQV05224)Z 50V, 0.22uF,
. Fig. 18 ERD25FJ221 : 1/4W, 2202, C211 ECEAS0Z2R2 ic, 50V, 2.2uF
C212 ECQV05224JZ : 50V, 0.22nF,
, I ll I 7 ERD25TJ224 ‘ 1/4W, 220k, C213 ECKF1E104ZV 25V, 0.1uF,
Terminal (3) 1 About 8.0V ERD25FJ222 : 1/4W, 2.2kQ, C214 ECEA1ES470 Electrolytic, 25V, 47 uF
: : it ERD25FJ181 , 1/4w, =: 1802,
; ERDSOFJ4R7 j v/2w, 4.79, C215 ECCD1H471K Ceramic, 50V, 470pF,
' ' A |ERD25FJ102 ; 1/4w, —-1kQ, C216 ECCD1H330K Ceramic, 50V, 33pF,
H ' C217 ECCD1H151K Ceramic, 50V, 150pF,
! : C218 ECKF1E104ZV —_|Ceramic, 25V, O.1uF,
; C219, 220 ECQV05224JZ ~—«{ TF, 50V, 0.22nF,
Terminal (4) About 5.0V C221 ECQM1H103KZ Polyester, 60V, O.01nF,
a is C401[Other Areas] A |ECQE2A473MZ_ |Polyester, 250VAC, 0.047uF,
bs 7 Nl caoite, EK, xL} | A |ECQU2A473MF | Polyester, 250VAC, 0.047uF.
: ; ' :
1 t
Terminal
©
About
5.0V
Areas
* [E] is available in Switzerland and Scandinavia.
* [EK] is available in United Kingdom.
* [XL] is available in Australia.
* [EG] is available in F.R. Germany.
* [EB] is available in Belgium.
* [EF] is available in France.
* [XA] is available in Southeast Asia, Oceania, Africa,
Middle Near East and Central South America.
* [XM] is available in Central South America.
* [EH] is available in Holland.
* [Ei] is available in Italy.
* [EC] is available in Czechoslovakia.
m REPLACEMENT PARTS LIST...Electrical Parts
Notes: 1. Part numbers are indicated on most mechanical parts. Please 3. Bracketed indications in Ref. No. columns specify the area.
use this part number for parts orders. Parts without these indications can be used for all areas.
2. Important safety notice:
Components indentified by A make have special characteristics
important for safety. When replacing any of these components,
use only manufacturer's specified parts.
Part No. Part Name & Description Part No. Part Name & Description
eas Solenoid Ass’y, Start/Stop
SFDSAH2985 Switch, Arm (Rest) Switch
EVQQJRO2K Switch, Start/Stop & Speed Selector
SFDSHXW0225 Switch, Voltage Adjuster
SFDSQ34N05R Switch, Power Source
INTEGRATED CIRCUITS
1C101 AN6635 IC, Drive
1€201 AN6680 IC, Control
TRANSISTORS
Q1, 201, 202 2SD636 Transistor, Regulator & Switching
2SD638 Transistor, Regulator
2SC 1826 Transistor, Regulator
28C1328—T Transistor, FG Amplifier
XBAS2CO16TIW | Fuse, T0.16A 250V
XBA2CO6TRO Fuse, T 0.63A 250V
D1 SVDS1RBA20Z Diode, Rectifier
D2 MA1051A Diode, 5.1V Zener
D201 MA162A Diode
D202 SVDRM1Z Diode
D203, 204 SVDPR5531K Light Emitting Diode,
Speed Indicator (Red)
D205 SVDEBR5505S Light Emitting Diode, Strobe
Transformer, Power Source
ERD25FJ103 Carbon, 1/4W, —-10k22,
ERD25TJ123 Carbon, 1/4W, — 12k2,
ERD25FJ822 Carbon, 1/4W, 8.2kQ,
ERD25FJ272 Carbon, 1/4W, — 2.7kQ,
ERX1ANJ1R2 Metal Oxide, 1W, 1.2Q,
ERD25FJ472 é 1/4W, 4.7kQ,
ERD25FJ822 1/4W, 8.2kQ,
ERD25TJ683 : 1/4W, — 68kQ,
ERD25FJ221 ‘ 1/4W, = 2202,
ERD25FJ391 1/4W, = 3902,
HALL ELEMENT
Hall Element, Turntable Position Detector
Crystal, 4,19328MHz Counter Oscillator