Kenwood RXD-501 Service Manual page 8

RXD-501/551/571/A5/701/751/771/A8
(6) CD SKIP UP/DOWN keys
With the selector on TUNER, the P. CALL is operated
by pressing the skip UP/DOWN keys.
SKIP [UP] key
SKIP [DOWN] key
4. Main microprocessor
4-1 Microprocessor periphery block diagram
CD MECH
CDM-27
X14, IC1
FL DRIVER uCOM
uPD780204
X09, IC11
RDS IC
SAA6579
X32, IC2
DSP
CXD2587Q
8
CIRCUIT DESCRIPTION
P.CALL up
P. CALL down
X28, IC6
EXPANDER IC
TC74HC166AP
X09, IC10
M38199MF-075FP
u-COM
X09, IC9
SPEANA IC
BA3834SK
(7) CD OPEN/CLOSE keys
With the selector on TUNER, the channel space set-
tings can be mad cyclically by pressing the
OPEN/CLOSE keys with M version.
(8) REC/ARM
Whenever the REC/ARM key is pressed, the indica-
tion of S.W. (ON/OFF) is available.
X05, IC2
PLL IC
LC72131
DECK MECH
X09, IC1
SELECTOR IC
NJU7313AL
X09, IC4
SYSTEM IC
M62430FP