Aiwa AD-F990 Service Manual page 20

During PLAY
(JL)
eleL~ id
F
B09
'Hh i
i
elelelo|
Hi {ft
1
®
rico]
x
r
i
r zr
ane
ele
tl
elalele i
|
;
ale fi
rir
:
e
|. (7Hz)
L. (7Hz)
PLEA. (xz)
@ ;
:
8/8
rir
rc
i
i
Outline
Block diagram
SOURCE
SS— MANUAL
MONITOR S.W.
MONITOR
CONTROL
2-1 T/S selection
During power ON
i) © is set to "H" until Q13D is set to ON,
@ is set to "H'',
and (3 is directly set to "H" via R92D, and © is set to
"H", and @) to "L". - TAPE POSITION
ii)
When @ 0-SOURCE
(during REC and REC-PAUSE) is set
to "H" (30m sec) via mechanism control,
@® is set to
"H" and @
to "L". + SOURCE POSITION
iti) When @)0-TAPE (during PLAY and REC/PLAY)
is set to
"H" (30m sec) via the mechanism control, @) is set to
"H" and
11 to'L",
— TAPE POSITION
iv) When the manual T/S SW,is set to ON, "H" at ©
passes
through the differential circuit, @ is set to "H",
and
1C14D2/2 is the circuit that when @ is changed
from "L""'
to "H", the "L", "H" mode of ® ,@) is inverted,
so it is
set in reverse to the state before the T/S SW
is pressed,
(For exampie: TAPE -» SOURCE)
Note 1. The analog SW (pins 5, 6, 8, pins 9,
11, 12) of IC15D
are selected according to the inputs (pins 14,15).
2. When
the
mechanism
control
is Operating in other
modes
than
the above, 0-TAPE
and 0-SOURCE
are
not output.
T/S selection
@®/REC+PLAY/
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20