Kenwood RXD-803 User manual

MINI HiFi COMPONENT SYSTEM
RXD-803/803E/853/853E/A83
SERVICE MANUAL
(XD-803~A83)** © 2000-5/B51-5622-00 (K/K) 3633
70%
DISC
1
DISC
2
DISC
3
STANDBY
TIMER
DISPLAY/DEMO
MENU
SELECTBACK ENTER
SOUND
CONTROL TUNING MODE
M
U
L
T
I
C
O
N
T
R
O
L
REC/ARM
REVERSE
MODE TAPE EQ.
PHONES
DISC SKIP
OPEN/
CLOSE
E
X
.
B
A
S
S
PUSH
OPEN PUSH OPEN
DECK
PLAY
A DECK
REC/PLAY
B
VOLUME
CONTROL
I/
Panel ass'y
(A60-1771-31)
Knob
(K29-7721-04)
Panel
(A29-1082-12)
Front glass
(B10-3582-02)
Knob
(K29-7722-04)
Phone jack
(E11-0280-05)
In compliance with Federal Regulations, following are repro-
ductions of labels on, or inside the product relating to laser
product safety.
**Refer to page 2 if you want to know system configuration.
KENWOOD-Crop. certifies this equipment conforms to DHHS
Regulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM
Illustration is RXD-853(M).

Unplug the power cord from the power outlet then,
while holding the ENTER key depressed, plug the
power cord again.
÷Please note that resetting the microcomputer clears the
stored contents and returns to the factory set condition.
Operation to reset
The microcomputer may fall into malfunction (impossibility
tooperate,erroneousdisplay,etc.)whenthepowercordis
unplugged while power is ON or due to an external factor.
In this case, execute the following procedure to reset the
microcomputer and return it to normal condition.
(Main unit only)
ENTER
FM indoor antenna (1) AM loop antenna (1) Remote
(T90-0836-05) (T90-0852-05)
(T90-0837-05) (A70-1367-05): RC-853....KPMXY (A70-1368-05): RC-853E....TEE2
Battery cover (A09-1151-08)
control unit (1)
Use to adapt the plug on the power
cord to the shape of the wall outlet.
(Accessory only for regions where
use is necessary.)
AC
(E03-0115-05)
plug adaptor (1)
Batteries (R6/AA) (2)
Surround speaker system
Surround speaker (2)
Speaker cord (2)
Speaker stabilizer (8)
Center speaker (1)
Speaker cord (1)
Speaker stabilizer (4)
SYSTEM CONFIGURATION
Cautions
RXD-803/803E/853/853E/A83
2
CONTENTS / ACCESSORIES
CONTENTS / ACCESSORIES / CAUTIONS............. 2
EXTERNAL VIEW.......................................................3
DISASSEMBLY FOR REPAIR....................................3
BLOCK DIAGRAM......................................................4
CIRCUIT DESCRIPTION............................................5
ADJUSTMENT..........................................................11
PC BOARD .............................................................. 13
SCHEMATIC DIAGRAM.......................................... 19
EXPLODED VIEW ....................................................35
PARTS LIST..............................................................37
SPECIFICATIONS ......................................Back cover
Contents
Accessories
SYSTEM MAIN UNIT DESTINATION SPEAKER SP CORD PARTS No. SPEAKER SP CORD PARTS No.
XD-803 RXD-803 E LS-N523 E30-5829-08 CRS-N503 E40-5542-05
XD-803E RXD-803E E2 LS-N523 E30-5829-08 CRS-N503 E40-5542-05
XD-853 RXD-853 YMXTE LS-N573 E30-5829-08 CRS-N553 E40-5542-05
XD-853E RXD-853E E2 LS-N573 E30-5829-08 CRS-N553 E40-5542-05
XD-853(M3) RXD-853 M LS-N573(M3) E30-5829-08 CRS-N553 E40-5542-05
XD-A83 RXD-A83 KP LS-N573 E30-5829-08 CRS-N553 E40-5542-05

RXD-803/803E/853/853E/A83
3
EXTERNAL VIEW
AC 220-
240V~
AC 110-
120V~
GND
FM
75
AM
ANTENNA
+
-
FRONT
SPEAKERS
DIGITAL
OPTICAL
(6-16 )
RL
L
R
FRONT
+ -
SURROUND SPEAKERS
(12-16 )
R
L
SUPER
WOOFER
PRE OUT
CENTER SPEAKER
(
6-16 )
OUT
CENTER
SURROUND
SUB
WOOFER
6CH.
INPUT
Lock terminal board
(E70-0052-05)
Cover
(F07-1692-01) Metallic cabinet (A01-3739-11)
Slide switch
(S62-0001-05)
Pin jack
(E63-0095-05)
Lock terminal board
(E70-0045-05)
Pin jack
(E63-0116-05)
Pin jack
(E63-1008-05)
Oscillating module
(W02-1114-15)
Lock terminal board
(E70-0046-05)
Illustration is RXD-853(M).
DISASSEMBLY FOR REPAIR
BOTTOM SIDE
HOW to open the tray if not comes out.
(1) Turn the friction arm counterclockwise
using a screw driver and the like.
(2) Pull out the tray frontwards by hand
when the tray comes just out.

BLOCK DIAGRAM
CLK
PLL-CLK
PLL-CE
PLL-DO
SD
ST
PLL-DATA
S-LEVEL
DE-EMPH
R/P
Lch-OUT Rch-OUT
+12V
REC PB AMP
AMP
5V
(600mV)
DECK (1.2V)
CD (1.2V)
Lch-OUT
Rch-OUT
DIGITAL OUT
DATA
POWER RELAY XIN XOUT XCIN XCOUT
(10MHz) (32.768KHz)
MAIN CLOCK TIMMER CLOCK
MPX CLK
DATA u-COM
TUNER
+
+
C1,C2
A,B
CANCEL
BEAT
OUT
IN
PROTECTION
ATT
MUTE
BEEP
+
PRO LOGIC
5V
TUNER
DECK
CD
VIDEO
DATA CLK
LIN
LOUT
RIN
ROUT
COUT
SOUT
IFCK
DSP CS
IFDI
ACK
+
+
5V
9V
+
+
+
+
3STEREO VIRTUAL STANDBY TIMER
LED CONTROL
DATA
CLK
STB
RST
Sch
Cch
MUTEATT.
-10dB
Lch
Rch
1M
A120/70
A/B
B1/2
LBASS2
SE CLK
S4
LTRE
LSELO
LIN
LBASS1
SE DATA SE CE
C OUT
S OUT
S3
S2
S1
C1
C2
C4
C3
SE CE
SE DATA
SE CLK
+12V
+
+
+
+
+
+
+
+
+
S.CchSP
HP-DET
MUTEATT.
-10dB
CD
DECK
6ch INPUT
0dB
-6dB
0dB
TUNER
VIDEO -6dB
0dB
INPUTATT.
(RECK=H)
R/PERASE
SURROUND
OSC
BIAS
BIAS TRAP
BA3126N
CXA1498S
OTHER ch
H.P.
Rch
Lch
RF AMP
AN8806SB
PICKUP/
LOADING
DRIVER
CD DSP
KEY
(X13)
TUNER PACK
FM75
ANT
B DECK
(X28)
DECK
MECHA
IC2
IC1
IC12
RDS
INPUTATT.
M62498FP
L,RCH IN
IC1
CD MECHA
CDM-35
DIGITALOUT
(OPTICAL)
MAIN u-COM
M30622MA-A42FP
(X13)
Q3
Q1
IC1
-10dB
MUTE
IC2
IC4
(X14)
AMP
AM
J1
DEMODULATOR
J2
LOUDNESS
INPUT SELECTOR
INPUT VOL.
MAIN VOL.
3BAND TONE
L/R
FRONT
VOL.
SUB
(X32)
P
HEAD SW
PLAY/REC
PLAY BACK
/REC EQ.
A DECK
14,16
IC3
J2
SPEAKERS
(X14)
AMP
BASS REVISE
CIRCUIT
AC/DC
PROTECTION
SLch
SRch
X1
X2
GND
5V
AVR
D33
D32
GND
40V
AVR
-35V
AVR
12V
Q38
Q34
AVR
9V
Q31
5V
AVR
Q32
5V
AVR
X13,Q8
DECK (BIAS)
TUNER
DRIVER
LOADING
PICKUP DRIVER
CD DSP.RF AMP
CONTROL IC
ELECTRIC VOL
-40V
FIL
12V
MAIN
FIP
IC1 ED1
KEY1-3
BASS
VOLUME
FIP
DRIVER
REMOCON INTERFACE
BACKUP
u-COM
Q13,
CN2
IC11
MID TRE
SELECTOR
Zin=100K
DOLBY
DSP
IC14
OTHER CH
VIDEO/6CH
400mV IN
Cch IN
6CH
SLch IN
6CH
SRch IN
6CH
SUB WOOFER
6CH
(X14)
DECK (MECHA)
DOLBY PL DSP AVR
5V
ELECTRIC VOL
(C,Sch)
(L,Rch)
DOLBY PL DSP
RDS
DECK
CD
D5
GND
-HB
+HB
+LB
-LB
HNA-15MM18T
J4
Cch
AMP
AMP IC2
IC2
Q8Q6
IC1
IC13
VOLUME
ELECTRIC
J3
S.W. PRE-OUT
Q5 Q7
SPEAKERS
(X07)
E/T TYPE
ONLY
RXD-A83/803/803E/853/853E
E/T/M/X
DESTINATION
RXD-803/803E/853/853E/A83
4

RXD-803/803E/853/853E/A83
5
CIRCUIT DESCRIPTION
1. Initialization
1-1 Setting of the Initial Conditions
While pressing the [ENTER] key, plug the AC cord into AC
wall 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 and cassette mechanisms are also initial-
ized.
• During the initial conditions, the display shows *INITIAL-
IZE* and after that it will be returned to standby condition.
1-3 Initial Items
(1) AMPLIFIER
• POWER ON/STANDBY STANDBY
• VOLUME 14
• BALANCE CENTER
• INPUT SELECTOR TUNER
• SOURCE DIRECT OFF
• MUTE OFF
• AUTO POWER SAVE OFF
• AUX INPUT LEVEL -1
• AUX INPUT MODE 2ch(EXCEPT E,E2,T)
• DISPLAY MODE AUTO
(2) TUNER
• BAND FM
• FREQUENCY LOWEST FREQUENCY
• AUTO/MONO AUTO
• PRESET CHANNEL – – ch
(3) CASSETTE DECK
• REVERSE MODE REVERSE
• TAPE A/B B
• TAPE DIRECTION FORWARD
(4) CLOCK
• CLOCK 0:00(E,E2,T)/12:00am(OTHER)
• Program Timer Recoding
ON TIME 0:00(E,E2,T)/12:00(OTHER)
OFF TIME 0:00(E,E2,T)/12:00(OTHER)
• Program Timer Play
ON TIME 0:00(E,E2,T)/12:00(OTHER)
OFF TIME 0:00(E,E2,T)/12:00(OTHER)
• Program on Mode OFF
• SLEEP TIMER OFF
(5) Equalizer
• Equalizer OFF
• CUSTOM EQ.1~3 FLAT
• EX. BASS ON
• DSP OFF
• SURROUND OFF
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 Error display
• If both mechanism (CD/DECK) error occur, the display is
indicated as follows.
• C XERR
Set Type BAND Receving Frequency
Range Channel
Space IF RF
FM 87.5MHz 108.0MHz 100kHz +10.7MHz 25kHz
K,P K1 AM 530kHz 1700kHz 10kHz +450kHz 10kHz
FM 87.5MHz 108.0MHz 100kHz +10.7MHz 25kHz
M,Y K2 AM 530kHz 1610kHz 10kHz +450kHz 10kHz
FM 87.5MHz 108. 0MHz 50kHz +10.7MHz 25kHz
M,Y,X E1 AM 531kHz 1602kHz 9kHz +450kHz 9kHz
FM 87. 5MHz 108.0MHz 50kHz +10.7MHz 25kHz
E,E2 E1
RDS AM 531kHz 1602kHz 9kHz +450kHz 9kHz
FM 87. 5MHz 108. 0MHz 50kHz +10.7MHz 25kHz
MW 531kHz 1602kHz 9kHz +450kHz 9kHzTE2
RDS LW 153kHz 72 9kHz 9kHz +450kHz 9kHz
2. Destination List of Tuner