Circuit Description; Initialization; Destination List Of Tuner; Test Mode - Kenwood RXD-652 Service Manual

1. Initialization

1-1 Setting of initial conditions
While pressing the [ENTER] key, put the plug into an AC
power outlet.
1-2 Initializing operation
• A microcomputer is initialized for start when the AC
power is turned on when pressing the [ENTER] key. At
that time, CD mechanism and CASSETTE mechanism
are also initialized.
• During the initial operation,the display shows INITIALIZE
and after that it will be returned to STANDBY condition.
1-3 Initial items and back up data
*POWER
*VOLUME
*BALANCE
MUTING
PROTECTION
S. DIRECT
SUPER WOOFER
(RXD-752/E/W)
DISPLAY MODE
AMP *AUTO POWER SAVE
*MD/DVD INPUT LEVEL -3
*INPUT SEL.
(LISTEM MODE)
DOLBY PROLOGIC
DOLBY 3STEREO
DOLBY VIRTUAL
SURROUND
CENTER SP.
SURROUND SP.
DELAY TIME
*BAND
TUNER *FREQUENCY
*AUTO/MONO
*P.CH
*CLOCK
CLOCK *PROG. RECORDING
*PROG. TIMER PLAY
*PROG. EXECUTION
SLEEP TIMER
O.T.T.
*DIRECTION
DECK *RVS MODE
*A/B
*BACKED UP DATA
1-4 Mechanism initialization
1-4-1 CD mechanism
• Disc unclamps(traverse down).
• Rotary tray rotates(1/3 rotation).
• If a mechanism error occurs, CD ERR 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
ERR on the display.
RXD-652/702/752/772S/852/A81/A601/A701

CIRCUIT DESCRIPTION

ITEMS
STANDBY
14
CENTER
OFF
OFF
OFF
+3
AUTO
OFF
TUNER
OFF
OFF
OFF
EXIST(SMALL)
EXIST
20 msec.
FM
LOWEST FREQUENCY
AUTO
--CH
0:00 (E/T/Q) 12:00 (OTHERS)
ON/OFF TIME
0:00 (E/T/Q) 12:00 (OTHERS)
ON/OFF TIME 0:00 (E/T/Q)
12:00 (OTHERS)
OFF
OFF
OFF
FORWARD
REVERSE (U MODE)
B
1-4-3 Error display
• If both mechanism (CD/DECK) error occur, the display is
indicated as follows. CD & X ERR

2. Destination list of TUNER

Destinat- Tuner Receiving
BAND
ion type frequency range
FM 87.5MHz~108.0MHz
K,P K1
AM 530kHz~1700kHz
FM 87.5MHz~108.0MHz
K2
M,V,X,Y
AM 530kHz~1610kHz
FM 87.5MHz~108.0MHz
M K3 MW 530kHz~1610kHz
SW 5.9MHz~17.9MHz
FM 87.5MHz~108.0MHz
E1
M,V,X,Y
AM 531kHz~1602kHz
FM 87.5MHz~108.0MHz
MW 531kHz~1602kHz
M E3
SW 5.9MHz~17.9MHz
E1 FM 87.5MHz~108.0MHz
E
RDS AM 531kHz~1602kHz
FM 87.5MHz~108.0MHz
E2
T
MW 531kHz~1602kHz
RDS
LW 153kHz~279kHz
FML 65.0MHz~74.0MHz
FMH 87.5MHz~108.0MHz
Q Q
MW 531kHz~1602kHz
LW 153kHz~279kHz
2-1 Discrimination of TUNER destination
Destina- R107 Voltage
tion [½] [V]
K 91k 4.51
M1 39k 3.98
M2 22k 3.44
T 13k 2.83
E 8.2k 2.25
Q 4.7k 1.60

3. Test mode

3-1 Test mode of the receiver
3-1-1 Setting of the test mode
While pressing the [INPUT] key or [EX. BASS or S.
WOOFER] key, put the plug into an AC power outlet.
3-1-2 Canceling of the test mode
Unplug an AC power cord from an AC power outlet.
3-1-3 Selector mode or FL indication
SELECTOR
KEY
MODE
• All the fluorescent display indicators
[EX.BASS] and LEDs light on.
+ AC ON TUNER • STANDBY and TIMER LEDs blink up.
[S.WOOFER] • The all illminated state is cleared by
+AC ON pressing any main unit keys or
remocon keys.
[INPUT] AUX • AUX TEST
+ AC ON
Channel
IF RF
space
100kHz +10.7MHz 25kHz
10kHz +450kHz 10kHz
100kHz +10.7MHz 25kH
10kHz +450kHz 10kHz
100kHz +10.7MHz 25kHz
10kHz +450kHz 10kHz
5kHz +450kHz 5kHz
50kHz +10.7MHz 25kHz
9kHz +450kHz 9kHz
50kHz +10.7MHz 25kHz
9kHz +450kHz 9kHz
5kHz +450kHz 5kHz
50kHz +10.7MHz 25kHz
9kHz +450kHz 9kHz
50kHz +10.7MHz 25kHz
9kHz +450kHz 9kHz
9kHz +450kHz 9kHz
10kHz +10.7MHz 5kHz
50kHz +10.7MHz 5kHz
9kHz +450kHz 9kHz
9kHz +450kHz 9kHz
AVdd
10 k½
X13
IC1
91pin
(TYPE)
R107
FL INDICATION
5