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,
Description of
CIRCUIT DESCRIPTION
components
Tuner Unit (X05-3362-70, 2-71)
1
Q3
NOISE CANCELLER/MPX
Equivalent to LA2110, LA3376
Turns OFF when SEEK is engaged
FM BAND-WIDTH CONTROLL
ANRC DRIVE
Preamp Unit (XO
IC2
8-2202-70, 2-71)
DOLBY B/C
({NR-9550 or BH-2421)
Audio Unit (X11-2422-70, 2-72)
t
|
ag
Synthesizer Unit
Q5
6
ag, 10
Q11, 12
Q13
Q14 ~ 17
Device
Use and Function
cl
C3
POWER AMP
(TA7263P)
Device |
Use end Function
IC5
GAP DETECTION IC for T-ADV
IC6
BUFF AMP
PRE AMP for REAR
IC7
Q4
INV. for RST signal from external
Q
INV. for outputting the DK signal to exter-
nal
Q18, 19
5.6V, R.P.S.
PWR ON 56 SW
Operation, Condition and Compatibility
Operation, Condition and Compatibility
Controls PLL IC (IC2), E-VOL IC and LCD DRIVER IC with serial data.
Provides the KEY MATRIX
and processes the key operations of the front
panel.
Mechanism control, EQ/DOLBY control, audio signal selection control, power
control, ILL control, etc.
LOUDNESS CONTROL
(X14-2172-70, 2-71)
MICROPROCESSOR
Accepts the ST/SK/DK display logic, F/R signal of TAPE, RST signal and PACK
IN from
external,
then
inputs
the corresponding
KEY
MATRIX
of the
microprocessor.
BUFF AMP
PRE AMP for FRONT
10V R.P.S. (Regulated Power Supply) for
ILL
P-CON output circuit
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