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Product safety notice:
Product safety should be considered when
a component replacement is made in any
area of a receiver. Components indicated
by a mark A in this circuit diagram show
components whose values have special
significance to product safety. It is
particularly recommended that only parts
specified on the part service manual be
used for components replacement pointed The service Precaution:
out by the mark. The area enclosed by this line (Ss. ) is
directly connected with AC mains voltage.
Transistor, Diode & Integrated Circuit terminal guide
C : Collector ’
B: Base ‘ A: Anode
E : Emitter K : Kathode
Particular parts symbol
Fusible resistor
BE
C,K,B:Ceramic
F:Mylar film
M,N:Polypropylene
Z:Metalized paper
CO LOU R TE LEVISION mcd staat we whi ~ ae 2. All resistance rated wattages are 1/6W unless otherwise noted. { 2 D K=+10% @ Transistor 2SC536(0,R,S), 2SC1740(Q,R,S), 2SC945A(O,R,P) or
ak ine to eliminate hazard of electric 3. Excepting electrolytic capacitors, all capacitance values of less than 1 are L Cc che
shock. expressed in pF and more than 1 are pF. haracteristic
T,A,U,D:Electrolytic 2SA564(QA,RA), or 2SA1015(0,Y) unless otherwise noted.
Kind (Ceramic)
When servicing the area, connect an Circuit diagram notes : 9. Expression of capacitance and resistance in circuit diagram. 10. @ Diode 1S1555 may be replacad with 1S2473, 1S2076 or DS472
1. All resistance values are in ohms, K=1,000, M=1,000,000. Capacitance (Example) d=+5% unless otherwise noted.
M= + 20% 28C1815(G,0,Y) unless othe-wise noted.
: @ Transistor 2SA608(E,F) may be replaced with 2SA933(Q,R),
4. All capacitance rated voltages are 50V unless otherwise noted. Capacitance value (220pF)
CHASSIS 5. All inductance values are in pH. Allowable error (20%)
; bo 6. Voltage readings taken with taken with a "VTVM" are from point indicated
inet SERIES chassis ground. Voltage readings taken by using a colour bar signal are with Rated voltage(1,000V)
all controls at normal position. Some voltages may vary with signal strength. Resistance (Example)
Non-pole electrolytic
7. Waveforms were taken with colour bar and controls adjusted for normal 4/ 1. ca itor.
C
S}
1
443
picture.
Waveforms
were
taken
by
using
a
wide
band
oscilloscope
and
a
low
—
Resistance
value
(1.2Q)
eval
carbo
poe
capacity probe. | LEO, ics nati a
SERVICE 8. This circuit diagram covers a basic or representative chassis only. There Sears %) S:Oxide metalized :
REF.NO C1 4E A80 B-00 may be some components or partial circuit differences between the actual ; W:Wire wounding ae
ommenns chassis and the circuit diagram. Rated wattage(1/2W) C:Solid osister
Part No. SKP20015 E7CC
32 q. SOHN: