Circuit Description - Kenwood RXD-M32V Service Manual

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RXD-M32V
1. Initialization
1-1 Setting of the Initial Conditions
While pressing the (STOP) key, plug the AC cord to AC
wall outlet.
1-2 Initializing Operation
A microcomputer is initialized for start when the AC
power is turned on while pressing the [STOP] key.
At that time, CD and CASSETTE mechanisms are also
initialized.
During the initial conditions, the display shows "INI-
TIALIZE" and after that it will be returned to standby
conditions.
1-3 Initial Items
ITEMS
POWER
BACK LIGHT
VOLUME
BALANCE
AMP
BASS
TREBLE
EX.BASS
LOUDNESS
INPUT SEL
INPUT LEVEL
BAND
LAST freq.
TUNER
LAST Preset
Channel
AUTO/MONO
Preset Channel
CLOCK
PROG ON
(TIME)
CLOCK
PROG OFF
TIMER
(TIME)
SOURCE
Preset Channel
EXE MODE
OTT MODE
ASP
SLEEP
DIRECTION
RVS MODE
DECK
TAPE EQ
OPERATION
MODE
PLAY MODE
REPEAT
CD
RANDOM
OPERATION
MODE
4

CIRCUIT DESCRIPTION

STATE
REMARKS
OFF
High
10
CENTER
0
0
ON
OFF
TUNER
0
FM
LOWEST FREQ.
- -
AUTO
TEST FREQ.
AM 12:00
AM 12:00
AM 12:00
TUNER
1
OFF
OFF
OFF
OFF
FORWARD
REVERSE
OFF
STOP
TRACK
OFF
OFF
STOP
1-4 Mechanism Initialization
1-4-1 CD Mechanism
If a mechanism error occurs, "C" is indicated on the dis-
play.
1-4-2 DECK mechanism
When the initial condition becomes NG for the third
time, decide the error.
The error condition is displayed as "X" on the display.
1-4-3 If mechanisms (CD/DECK) error occur, the display is
indicated as follows.
C X S ERR
1-4-4 TAPE door switch diagnosis
If switches (open/close) error occur, "S" is indicated on
the display.
2. Destination List of Tuner
Receiving Frequency Channel
Set
Type BAND
Range
FM
87.5MHz~108.0MHz
M
E1
AM
531kHz~1602kHz
3. Test Mode
3-1 Setting of the Test Mode
TAPE MODE
TAPE PLAY Key+AC-ON
CD MODE
CD PLAY Key+AC-ON
TAPE REC Key+AC-ON
The oscillation diagnosis(existence
of oscillation and measurement of
period) of a sub clock is performed
before the test mode is entered. If
the diagnosis result is OK, the sys-
SUB CLOCK OSC
tem enters the test mode. If the
DIAGNOSIS
diagnosis result is NG, the oscilla-
tion of the sub clock is diagnosed
again. If the result is OK, the sys-
tem enters the test mode. If the
diagnosis result is continuously NG
5 times,the system stops with
"ERR1" and "ERR2" displayed.
3-2 Cancel of the test mode
By turning the power off, the system is initialized and the
tes mode is canceled.
3-3 Contents of the Test Mode
3-3-1 Deck Test Mode
KEY DISPLAY
If the REC/ARM key is pressed,
the system record for 4 seconds.
Then, it rewinds to the REC starting
position and plays back automatically.
TAPE
Normal
If the REC/ARM key is pressed,
REC
display
during the 4 seconds REC operation,
the system records further for
4 seconds, then returns to the starting
position of the first 4 seconds REC
operation and plays back.
IF
RF
Space
50kHz
+10.7MHz 25kHz
9kHz
+450kHz
9kHz
OPERATION

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