Microprocessor Periphery Block Diagram - Kenwood RXD-303 Service Manual

3-3-4 Test Mode
KEY
CD-PLAY/PAUSE
(Change the mode
alternately by the stop key.)
DISC 1
(Cyclically changed in the
stop mode only.)
STOP
TAPE EQ
TAPE EQ
(Press it more than 400msec.)
REVERSE MODE
REVERSE MODE
(Press it more t han 400msec.)
4. Microprocessor : M30622MA-A62FP

4-1 Microprocessor Periphery Block Diagram

X14,IC1
DOT DRIVER
(LC75711NED)
50
X14,ED1
Vaccume Fluorescent
Display (HNA-15MM18T)
X32,IC2
DSP IC
(MN662748)
CIRCUIT DESCRIPTION
DISPLAY
05 :
** **
05 and 03 :
01 :
07
08
09
01 :
Ex. 01~02
CD FF search.
Ex. 02~01
X28,IC1
DECK SYSTEM IC
(CXA1498S)
X13,IC101
4
M30622MA-A62FP
6
3
5
7
CD MECHA
(CDM-35)
RXD-303/353/503/553/653/A33/A53
OPERATION
Tracking-servo on.
Tracking-servo off.
STOP
Adjustment value/mean value
TB value FB value
TG value FG value
TO value FO value
Stop (Press it 1time.)
Cancel the test mode. (Press it 2 times.)
CD track no. up.
The pickup travels outward.
CD track no. down.
CD FB search.
The pickup travels inward.
6
3
2
3
X13,IC12 2
RDS IC(E, T)
(BU1923F)
DECK MECHA
5
X13,IC11
SYSTEM IC
(M62498AFP)
TUNER PACK
PLL IC
(LC72131)
3
7