Circuit Description - Kenwood DP-SE7 Service Manual

QQ
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1. Microprocessor
1-1. Microprocessor periphery block diagram
CD mecha
KSL-
TE
L 13942296513
213BGN
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CIRCUIT DESCRIPTION

(X32) IC2
CXD 2507AQ
SLT SW
CLK, DTA, LAT
S. CLK M. ON
MUTE XLON
MOTOR CONTROL
TERMINAL
µPD78044FGF
SWITCH INPUT
X 2
KEY INPUT
X 2
Seg key scm pin
6
x ao
y
i
KEY MATRIX
DP-SE7/SE7(G)/SE9
8
D.S.P.
SENSE
SCOR
SUBQ
(SLTSW)
(FOK , GFS)
Q Q
SDATA
3 6 7 1 3
SBUSY
SGATE
SCK
SDT
GRID X 8
SEGMENT X 12
8-BT-207GK
u163
.
2 9 9 4 2 8
SYSTEM
SERIAL
1 5 0 5 8 2 9 9 4
SIGNAL
(X25) IC5
KAN03
m
co
9 9
2 8 9 9
3