Circuit Description - Kenwood RXD-501 Service Manual

Mini hifi compact system
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RXD-501/551/571/A5/701/751/771/A8
QQ
3 7 63 1515 0
1. Initialization
1-1 Setting of initial conditions
While pressing the [ENTER] key, plug the AC cord into
the AC power outlet.
1-2 Initializing operation
• A microcomputer is initialized for start when the AC
power is turned on while pressing the [ENTER] key. At
that time, CD mechanism and
nism are also initialized.
• During the initial operation, the display shows "INITIAL-
IZE" and after that the clock blinks up on display.
1-3 Initial items and back up data
POWER
VOLUME
BALANCE
MUTING
EQ
EQ. MANU
AMP
EX. BASS
SRS 3D
S.W.
INPUT SEL
TE
L 13942296513
3D LEVEL
DEMO
BAND
LAST f
TUNER
LAST Pch
AUTO/MONO
Pch
CLOCK
PROG ON
CLOCK
PROG OFF
TIMER
PRO MODE
SOURCE
Pch
EXE
OTT
SLEEP
DIRECTION
RVS MODE
DECK
DOLBY NR
A/B
ACTIVE MODE
PLAY MODE
REPEAT
www
CD
RANDOM
PLAY MODE
TIME
.
back up data
6

CIRCUIT DESCRIPTION

CASSETTE
mecha-
ITEMS
OFF
45
CENTER
OFF
OFF (ROCK)
FLAT
ON
OFF
LEVEL 3 (RXD-
701/751 ONLY)
TUNER
LEVEL +5
ON
FM
LOWEST
FREQUENCY
— —
AUTO
TEST f
AM 12 : 00
AM 12 : 00
AM 12 : 00
TIMER PLAY
TUNER
1
OFF
OFF
OFF
FORWARD
p
OFF
B
STOP
TRACK
OFF
OFF
x
ao
u163
y
STOP
SINGLE
i
2 9
8
1-4 Mechanism initialization
1-4-1 CD mechanism
• Disc unclamps (traverse down)
• Rotary tray rotates (1/3 rotation)
• If a mechanism error occurs, "C" is indicated on the
display.
1-4-2 DECK mechanism
• When initial condition becomes NG for the third time,
decide the error.
The error condition is displayed as "X" on the display.
1-4-3 Error display
CD X ERR
Q Q
3
6 7
1 3
1 5
co
.
9 4
2 8
0 5
8
2 9
9 4
2 8
m
9 9
9 9

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