Aiwa AD-R450 - service, Service Manual, Page: 7 / 21

15
JACK C.B
16 17 18 19
20
21
5V
0
IOV
0
22
I
23
I
50msec
24 25 | 26
27 28 29
30
STOP — PLAY PLAY- STOP
5V
5V
0
(OV
0
STOP-^-FF
FF-> STOP
IOV
0
/ /
5 )
100msec
i —
“““ nf ^ 1 1' 1
\ ---- i i ---- 1
S T O P - P L A Y
5 V
0
FLAY-^STOP
0.5msec
5 V -
0
r
5V
4.4V
5V
0
3.2 m sec
a .
©
5V
0
5 V
0
5 V
O
IOV
0
lOm sec
U IM JU m JL
|LEADER TAPE LEADER TAPE
T = 0.2 ~ 5 sec
. i 2yk s e c
NOTES:
1) |_____ B (+) power supply
2)
Signal path
^ Rec path
3) The voltage is the reference value measured with a
tester (20 k-ohms/V DC) when there are no signals.
But (
) is with recording.
An asterisk (*) indicates that the value was measured
with a vacuum-tube voltmeter during recording.
4) Resistors with no designation have a rated power of
1/8W and a tolerance of ±5%.
5) Capacitors with no designation have a dielectric strength
of less than 50WV.
6) The only capacitor tolerance indicated are ±5% (J)
and ±10% (K ).
7) Ceramic capacitor symbols:
-^ l— For temperature compensation (SL)
— I h r High dielectric constant system (Y Y )
— II— High dielectric constant system (Y W , Y P , Y Z )
— I— Semiconductor ceramic
-®)l— For temperature compensation (SH)
8) Explanation of symbols
(@) Mylar capacitor
® Aluminum solid capacitor
(0 5 Polypropylene film capacitor
(@£5 Bi-polarized capacitor
C p Low-leakage capacitor
E 2 i Printed resistor
-MW- Fuse resistor
Safety component symbol
This symbol is given to important parts which serve to
maintain the safety of the product, and which are made
to conform to special safety specifications.
Therefore, when replacing a component with this
symbol, make absolutely sure that you use a designat­
ed part.
• This schematic diagram is subject to change without
notice in the interests of improved performance.
2SA952
2SA1015
2SC945
2SC1815
2SC2240
2SC2878
2SD1302
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