Pioneer KEX-900 Service Manual page 15

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13. CIRCUIT DESCRIPTION
®@ Block Diagram (KEX-900)
IB702
A-D
CONVERTER
IC707 Ic708
MULTI LEVEL
PLEXER SHIFTER
9~11
(MPA~MPC)
1c851 FRONT
@,
=}6
re
. .
TC601
Ic602 VOLUME UNIT
1c651 VOLUME UNIT
=} @
Gp
#
1c301
IC852
=F
7 BAND
FILTER
DRIVER UNIT
(DOLBY ON/OFF, B/C) 20, 21
24~31 (DAO~7)
CASSETTE
MECHANISM
MOTOR
DECK
CONT. DATA CONNECTION
TO
TUNER
|
DRIVER =
33 (SCK)
34 (SI)
35 (SO)
3 (SCK)
1¢901 4 (TrB)
5 (TrC)
10704
ANTI THEFT(RAM)
27 ~50(G1~11,P1~14)
FL TUBE
REMOTE $951~960
CONTROL KEY MATRIX
SYSTEM
DISP
CONT.
$901~910
KEY MATRIX
S909 : VACANT---- KEX-900/EW
Fig. 1
ne
: Saas J
;
j
|
a