Kenwood RXD-V313 User manual

MINI HiFi COMPONENT SYSTEM
RXD-V313
SERVICE MANUAL
© 1998-8/B51-5463-00 (K/K) 376
(XD-V313)
In compliance with Federal Regulations, following are reproduc-
tions of labels on, or inside the product relating to laser product
safety.
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
Refer to RXD-251/301/301E/301W/351/351E/351W/371S/A3
service manual(B51-5454-00), if you require mechanism
operation description in detail.
Please replace with the new pcb and/or mechanism on CD
player if it doesn't work.
DISC 1 DISC 2 DISC 3 076
¢4
ROCK
FLAT
EX.BASS
POP
JAZZ
A B
¶31¡7/08 3 1¡7/08
MC1
MC2
MIN
MIN
MAX
MAX
MIC VOLUME
ECHO LEVEL
STANDBY
VIDEO CD HIT MASTER
INPUT
ON/STANDBY
TIMER SET
CLOCK
DISPLAY
/DEMO
AUTO/MONOTIMER
BAND TUNING
PHONES
UP
DOWN
AUTO
PRESET
MANUAL
PRESET
RECORDING/ PLAYBACK PLAY BACK
DISC
SKIP
Panel(CD)
(A60-1579-08)
Front glass
(A29-1048-08)
Knob
(K29-7535-08)
Knob
(K29-7534-08)
Knob
(K29-7519-08)
Knob
(K29-7518-00)
Jack(H/P)
(E11-0386-08)
Knob
(K29-7516-08)
Cassette lid(R)
(A53-2104-08)
Front glass(L)
(B10-3451-08)
Front panel
(A60-1575-08)
Knob
(K29-7533-08)
Knob
(K29-7512-08)
Indicator led lens
(B19-1602-08)
Knob
(K29-7521-08) Knob (K29-7522-08) Knob (K29-7523-08)
Cassette lid(L)
(A53-2103-08)
Front glass(L)
(B10-3450-08)
Knob
(K29-7515-08)
Knob
(K29-7511-08)
Jack(MIC)
(E11-0387-08)
Knob
(K29-7549-08)
Knob
(K29-7513-08)
RXD-V313(K)COVER1,1(98.12.119:46 y[W 2

123 456 789
0+10
SLEEP/
CLOCK LIGHT DISPLAY
EQ.
REPEAT
RANDOMP.MODECHECKCLEAR
DIGESTZOOMFREEZEHIT MASTER
HIGH SPEED PLAYAUTO PAUSE
SLOWMEMORY STOP
MUTEINPUT
AUTO PBC
MULTIPLEX
AUTO/PAL/NTSCON SCREEN
DISC SKIP
OPEN/CLOSE POWER
EX.BASS
SELECT
1
TUNING
¡
BAND
7 6
4
P.CALL
¢
VOLUME
REMOTE CONTROL UNIT
RC-V313
FM indoor antenna (1) AM
(T90-0815-08)
loop antenna (1) AC
(E03-0115-05)
plug adaptor (1)
Remote
(A70-1261-08) : RC-V313
control unit (1)
Batteries (R6/AA) (2)
Use to adapt the plug on the power cord
to the shape of the wall outlet.
(Accessory only for regions where use is
necessary.)
(T90-0801-05)
Operation to reset
The microcomputer may fall into malfunction (impossibility to oper-
ate, erroneous display, etc.) when the power cord is 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.
Press the "POWER" key while holding the Stop (7) key of
the CD section pressed, to switch off the power, and then
switch the power on again after a few seconds.
÷Please note that resetting the microcomputer clears the contents
stored in and returns and to condition when it left the factory.
RXD-V313
2
CONTENTS / ACCESSORIES / CAUTIONS
CONTENTS / ACCESSORIES / CAUTIONS...............2
EXTERNAL VIEW........................................................3
BLOCK DIAGRAM.......................................................4
CIRCUIT DESCRIPTION.............................................5
ADJUSTMENT.............................................................8
WIRING DIAGRAM....................................................10
PC BOARD ................................................................11
SCHEMATIC DIAGRAM............................................15
EXPLODED VIEW .....................................................26
PARTS LIST...............................................................27
SPECIFICATIONS .......................................Back cover
Contents
Accessories
Cautions
RXD-V313(K)COVER1,1(98.12.119:46 y[W 3

RXD-V313
3
EXTERNAL VIEW
1
2BEAT
CANCEL
–
+
+
–
SPEAKERS
(6–16 Ω)
FM 75 ΩAM
ANTENNA
GND AC 220–240VAC 110–120V
R
AUX
INPUT
AUX
OUTPUT
VIDEO OUTPUT
L
L
L
R
R
Antenna terminal(4p)
(E70-0070-08)
Slide switch
(S62-0083-08)
Phono jack
(E63-1076-08)
1P rca jack
(E63-1075-08)
Slid switch beat cancel
(S62-0057-08)
Lock terminal board
(E70-0108-08)
RXD-V313(K)COVER1,1(98.12.119:46 y[W 6

RXD-V313
4
BLOCK DIAGRAM
CONTROL
A/B
PLAY
AMP
ALC
PLAY
R/P OSC
BIAS
(Q209,L201)
205
Q203, Q204,
206 Q201Q202
TAPE OUT
TAPE OUT
REC OUT REC IN
DECK A/B SW
Q213
B+
PRESET
EQ.
PRE-AMP
IC403 RL501
Q406,
407
MUTE
SYSTEM
415
VOL1(-10dB)
ATTENUATOR
Q414,
POWER AMP
IC501 +VCC
-VCC
Q504-506
DETECTOR
IC502
SPEAKER
PROTECTOR
+12V
512
Q511,
MUTE
JACK
SPEAKER
HEADPHONES
+5.6V Q702
+7.5V +12V
Q701
Q704
+VCC
SWITCHED
to
X'FORMER
-12V Q707
+12V
-VCC
CN701
D702
D701
Q705,
706
Q703
LCD DISPLAY
IC601
u-COM
KEY
MATRIX
to CD PCB
CN401
to MAIN PCB
MIX
BUFF
AMP
TUNE
AM ANT
GND
FM ANT AMP
AM RF
TUNE
OSC
ANT RF
IFT
PLL
L.P.F
Q107,108
AMP
RF IC201
u-COM
AMP
Q106
IFT CF1 IF FILTER
AM SECTION
AM
FM SECTION
CF2 OUT
RC
IC102
TUNE
FM RF
FM
OSC
Q102
GND
IC01 LA9241M
RF SIGNAL PROCESSING/SERVO AMP
COMPACT DISC PLAYER
DIGITAL SIGNAL
CD POWER DRIVER
IC04 BA5936S
M'PEG u-COM
IC03 LC867240A
IC02 LC78630E
XTL01
16.9344MHz
NJM4558L
OPAMP
MMOTOR
DISC
MOTOR
FEED
M
TRAY MOTOR
T/T MOTOR
SW
LIMIT IN
OUTPUT
AUDIO
CONTROL SW
S01-04
Rch
Lch
u-COM
ANALOG SIGNAL PROCESSOR(ASP)
DSP
to VCD BLOCK
to
FRONT PCB
STANDBY
SW
Q501-503
TUNER
AUX
CD
CONTROL
AMP
IC404
D/A
CLK
CONTROL SRAM
A/D
LPF
LPF
BUFF MIX
AMP
MIC
MIC VR
ECHO VR
SW
LOGIC
IC301
Q301 Q302
EX-BASS
CN002 from CD-DSP PCB
LC865632A
IC005
OSD
LC74772V
IC004
LC78010E
VIDEO ENCODER
2SC2785
VIDEO BUFFER
Q001
Q002
2SC2785
FILTER
2SA1175
Q003
VIDEO O/P
IC15
CPU I/F
CD-ROM
DECODER SYSTEM DECODER MPEG AUDIO DECODER
DECODER
MPEG VIDEO
DRAM ARBITER
MPEG DECODER
LC74201E
IC001
CPU
PLL+VCO 54MHz
CN001
IC02
(from CD DSP
LC78630E)
4MBIT DRAM
IC003
UPC424260G5-60-7JF
NTSC/PALL SELECTOR
from CN002
from
MPEG
CN404
VIDEO OUT
JK402
MIC
(1/2)
IC401
412
Q411,
MUTE OUT
AUX
305
Q304, Q306,
307
R/P SWITCHING
AMP
REC
CE
DI
CL
24 23 20 19 16 14
1
2 5
9
11
23
3,28 2,29
1,30
+
+
FOCUS
TRACKING
+
CL
CE
DI
1,30
2,29
3,28
4,27
5,26
8
1
6,9
1
R
C
B
A
C
3,13
PTS
MPEG AUDIO
START TRIGGER
16.9344MHz
CD DSP CLOCK
TRACK 1
INFORMATION YUV
17.734475MHz
PAL/ 14.31818MHz NTSC/
MPEG VIDEO
PTS
MPEG BIT
STREAM
+
IC201
FM RF IC101
TUNER UNIT CD MECHA. UNIT
AUDIO UNIT/DISPLAY UNIT
RXD-V313
IC402
IC302 IC303
MPEG UNIT
RXD-V313(K)COVER1,1(98.12.119:46 y[W 7

RXD-V313
5
CIRCUIT DESCRIPTION
No. Name I/O Description Active
HL
1 CE I LC7218, LC75392 CE out
2 RESET-OUT O Reset out IC03 (LC867240A) O
3 DI I LC7218, LC75392, LC78211 data out
4 DO O Data output to LC7218
5 CLK I LC 7218, LC75392, LC78211 clock out
6 DATA-OUT O Serial data out to LC867240A
7 DATA-IN I Serial output of SUBQ 80BIT
8 CLK-OUT O Clock output
9 N/C O No used
10 STB-OUT O Strobe out
11 BUSY-IN I Busy input
12 RESET I Reset signal input O
13 POWER-DOWN I Power down input O
14 GND – GND
15 VSS – Vss
16 X1 – Xtal 6.0MHz
17 X2 – Xtal 6.0MHz
18 VDD1 – Vdd
19~24 K1~K6 I Key input (K1~K4),K5/K6 (No used)
25 MODE-SW2 I Model discrimination
26 MODE-SW1 I Model discrimination
27, 28 GND I GND
29 REMOTE IN I Remote signal input O
30 VR + I VR encoder input A
31 VR - I VR encoder input B
32 PIC-UP I Pick-up SW
33 PIC-DOWN I Pick-down SW
34 DISC-COUNT I Disc counter SW
35 TURNTABLE-SW I Turntable SW
36 TRAY-OPEN I Tray open SW
37 TRAY-CLOSE I Tray close SW
38 TURNTABLE MOTOR + O Turntable motor (+) O
39 TURNTABLE MOTOR - O Turntable motor (-) O
40 TRAY MOTOR + O Tray motor control (+) O
41 TRAY MOTOR - O Tray motor control (-) O
42 MOTOR SPEED O Motor speed control Nor Down
43 LED HIT MASTER O LED control (hit master) O
44 TUNER O
45 CD O
46 AUX O
47 TAPE O No used O
48 FLAT O
49 ROCK O
50 JAZZ O
51 POP O
52~55 S1-S4 O Segment out (1~4)
56 VDD2 – Vdd
57 VSS2 – Vss
58~79 S5~S26 O Segment out (5~26)
80~82 BIAS3~1 – GND
1. Microprocessor : (IC601, LC867224A-5H95)
1-1. Pin description
RXD-V313(K)COVER1,1(98.12.119:46 y[W 10

No. Name I/O Description Active
HL
1 N/P SEL OUT O NTSC/PAL sel out to IC004 (LC78010E) O
2 RESET OUT O IC001 (LC74201JE) reset out
3 DI I DI (IC001, LC74201JE)/SIN (IC005, LC74772V)
4 DO O DO (IC001, LC74201JE)
5 CL I Clock (IC005, LC74772V)
6 DATA OUT O Data out to IC601 (LC867724A)
7 DATA IN I Data input from IC601 (LC867724A)
8 SCK I Clock out from IC601 (LC867724A)
9 STB IN I Strobe input from IC601 (LC867724A)
10 BUSY OUT O Busy out to IC601 (LC867724A)
11 MIRQ I MIRQ (LC74201JE) O
12 RESET I Reset input
13, 14 I/P – Vss
15 VSS – Vss
16, 17 CF1/CF2 – Xtal 6.0 MHz
18 VDD – Vdd
19 FUNCTION 4/3 – Vss
20 8300/8301 – Vss
21 MULTI 9/16 – Vss
22 IM DRAM – Vss
23~26 – – Vss
27 WRQ I Sub-code Q input stand by
28, 29 – – Vss
30 VIDEO LED O LED control (Video) O
31~37 N/C – No used
38 VDD CONTROL O MPEG Vdd control Other CD
39~55 N/C – No used
56 VDD – Vdd
57 VSS – Vss
58~73 – – No used
74 SL + O Sled motor control (+) O
No. Name I/O Description Active
HL
83~86 COM-0~3 O FL Common 0~3
87 FM-STEREO I FM stereo signal input Mono Stereo
88 SYN REC I Synchro start input O
89 VSS3 – Vss
90 VDD3 – Vdd
91 POWER-SW O Power SW out On Off
92 SYS-MUT O System mute out Off On
93 TU-MUT O Tuner mute out On Off
94 FUNCTION-TAPE O No used
95 LCD-BACK-LIGHT O LCD back light control On Off
96 N/C I No used
97 VR-1 O VR step extend out 1step Others
98 REC-MUTE O IC03 (LC867240A) rec out mute On Off
99 EX-BASS O EX-bass control On Off
100 VOICE O Voice cancel out Off On
2. MPEG Microprocessor : LC867240A (CD PCB, IC03)
2-1. Pin description
RXD-V313
6
CIRCUIT DESCRIPTION
RXD-V313(K)COVER1,1(98.12.119:46 y[W 11

RXD-V313
7
CIRCUIT DESCRIPTION
No. Name I/O Description Active
HL
75 SL - O Sled motor control (-) O
76 SPEED B O Speed control terminal to IC01 (LA9241)
77 SPEED A O Speed control terminal to IC01 (LA9241)
78 AUDIO MUTE O Audio mute control On Off
79 MUTE O IC04 (BA6536S) mute control CD Other
80 PIC LIMIT SW I Pic limit switch input O
81~86 – – Vss
87 CQCK O Command clock output to IC2 (LC78630E)
88 DAT O Command output to IC2 (LC78630E)
89 VSS – Vss
90 VDD – Vdd
91 SQ OUT I Sub-code Q input from IC2 (LC78630E)
92 RWC O IC02 (LA9241), CE
93 RES O Chip reset out to IC2 (LC78630E)
94 DRF I DRF from IC01 (LA9241)
95, 96 N/C – No used
97 CE O CE to IC001 (LC74201JE)
98 VOE O VOE to IC001 (LC74201JE)
99 CS O CS to IC005 (LC74772V)
100 RESET OUT O Reset out O
PORT SW 1 SW 2 SW 3 SW 4 SW 5 SW 6 SW 7 SW 8 SW 9 SW 10
Pin 19 Power Input Clock Timer Timer – EQ Off Rock Jazz Pop
(K1) Set Mode Set
Pin 20 Tuning Tuning Band Auto/ Auto Manual EX Bass – – –
(K2) Up Down Mono Preset Preset
Pin 21 CD CD – – Disc Disc 1 Disc 2 Disc 3 Open –
(K3) AMS + AMS - Skip Close
Pin 22 CD CD Play – – – – – – – –
(K4) Stop Pause
4. All LCD light on mode
• The all LCD light up when the STOP key and TIMER SET key are pressed simultaneously, while the power is ON.
• When the ON/STANDBY key is pressed, the all LCD light on mode is canceled.
3. Key matrix
RXD-V313(K)COVER1,1(98.12.119:46 y[W 14

RXD-V313
8
ADJUSTMENT
FM 75 ΩAM
ANTENNA
GND
(A)
(C)
(D) AM-SG
FM-MPX-SG
FM-MPX-SG
POLAR SG Dummy antenna
Oscilloscope
AC voltmeter
(B)
Distortion meter
TO TUNER UNIT
CN101, pin 9 (Lch)
pin 7 (Rch)
pin 8 (GND)
NO.
ITEM
INPUT
SETTING
OUTPUT
SETTING
TUNER
SETTING
ALIGNMENT
POINTS
ALIGN FOR
FIG.
1.
IF
(A)
98 MHz,1 kHz MOD
±75 KHz (DEV)
60dBu(ANTINPUT)
(B)
98MHz
T101
Maximum output
(Minimum distortion)
2.
LOWEND
TRACKING
(A)
87MHz, 1 kHz MOD
±75 kHz (DEV)
35dBu( ANT INPUT)
(B)
87MHz
L102
Maximum output
3.
HIEND
TRACKING
(A)
108MHz,1 kHz MOD
±75 kHz (DEV)
35dBu(ANTINPUT)
(B)
108MHz
TC101
Maximum output
4.
VT
–
Connect the DC
voltage meter to
TP2.
87.5 MHz
L103
VT=1.0V±0.05V
108MHz
–
Check the
VT=7.0V±1.0V
NO.
ITEM
INPUT
SETTING
OUTPUT
SETTING
TUNER
SETTING
ALIGNMENT
POINTS
ALIGN FOR
FIG.
1.
IF
(D)
531 kHz 1 kHz,
30%MOD
60dBu(ANTINPUT)
(B)
531 kHz
T102
Maximum output
(Minimum distortion)
2.
LOWEND
TRACKING
(D)
531 kHz 1 kHz,
30%MOD
30dBu(ANTINPUT)
(B)
531 kHz
L104
Maximum output
3.
HIGHEND
TRACKING
(D)
1602 kHz 1 kHz,
30%MOD
30dBu(ANTINPUT)
(B)
1602 kHz
TC102
Maximum output
4.
VT
–
Connect the DC
voltage meter to
TP2.
531 kHz
L105
VT=1.2V±0.05V
1602 kHz
–
Check the
VT=7.3V±1.0V
FM SECTION
MW SECTION
INSTRUMENTS CONNECTION
RXD-V313(K)COVER1,1(98.12.119:46 y[W 15

RXD-V313
9
ADJUSTMENT
NO.
ITEM
INPUT
SETTINGS
OUTPUT
SETTINGS
CASSETTE TAPE
DECK SETTINGS
ALIGNMENT
POINT
ALGN FOR
FIG.
Unless otherwise specified : each ; switch should be set as follows : 0dBs = 0.775V
BEAT SW : OFF
I. Cassette mechanism section (REC/PB head adjustment)
[1]
Demagnetization
and cleaning
–
–
PowerOFF,
demagnetization,
cleaning play
REC/PB head,
erase head.
capstan, pinch
roller
Demagnetize the REC/PB
head by head eraser. Clean
the REC/PB head, erase
head capstan and pinch
roller with a cotton swab
immersed in alcohol.
[2]
REC/PB head
azimuth
MTT-114,
TCC-153
SCC-1727
10 kHz, -10dB
(A)
PLAY
Azimuth
adjustment
screw
In a setting wher the output
is maximized, adjust the
azimuth adjustment screw
so that the Lissajous figure
appearing on the oscilloscope
screen comes near to a line
slanted45°Note : The head
should be installed in such a
manner that it approaches the
tape face.
II. PC board adjustment
<1 >
Tape speed
MTT-111
TCC-100
SCC-1727
3 kHz, -4 dB
(A)
PLAY
SFR201
Adjust so that Frequency is
3 kHz at the center of the
tape.
<2 >
Playback level
TCC-120
315 Hz 0dB
(A)
PLAY
Approx. -5dBm
ƒreference level
<3 >
Recording level
Put standard
test tape
(TCC-120)
into B deck.
Put standard
blank tape
into A deck.
(A)
Dubbing and
playback.
Approx. -5dBm
ƒreference level
CASSETTE DECK SECTION
Oscilloscope
Frequency counter
AC voltmeter
{
PIN2
IC401
(A)
MAIN UNIT
INSTRUMENTS CONNECTION
RXD-V313(K)COVER1,1(98.12.119:46 y[W 18

RXD-V313
10
CASSETTE DECK
RECORD SWITCH
MOTOR
UNIT
SWITCH A
UNIT
SWITCH D
UNITSWITCH C
UNIT
CD MECHA.
UNIT
CD MECHA.
ASS'Y
HEADPHONE
MIC MIX UNIT
AUDIO UNIT
DISPLAY UNIT
UNIT
SENSOR
CD
CONTROL
UNIT
UNIT
UNIT
UNIT
SWITCH B
TRANSFORMER
POWER
AC CORD UNIT
MECHA. ASS'Y
MPEG
BOARD
RXD-V313(M/I)
TUNER UNIT
CN101
CN03 CN402
FM 75
AM
GND
JK101
CN101
CN01 CN01
CN02 CN02
CN05
CN05
CN16CN16
CN06
CN08
CN18CN18
CN205
CN205
CN204 CN204
CN206 CN206
CN201
CN201
CN202
CN202
CN203
CN203
CN302
MIC1
MIC2
HEADPHONES
CN401 CN401
CN601CN601
CN604 CN604
CN403 CN403
CN302
CN501 CN501
SPEAKERS
Rch
Lch
OUT
JK501
Rch 2
Lch 1
INPUT
JK401
CN701
GND
CN19 CN19
S701
CN701
T/T
MOTOR
CN010
CN10
M
AUX
Rch 4
AUX
OUTPUT
Lch 3
CN06CN04
M
JK402
OUT
VIDEO
CN002CN001
CN003
CN405 CN405
10
1
6
1
6
1
10
1
1
1515
1
66
11
15
33
11
71
15
15
22
11
1
1
8
8
6
1
6
1
4
1
4
1
31
31
51
51
21
21
61
1
19
1
19
33
11
3
1
3
1
1
8
1
8
16
5
1
5
1
1
5
2
1
2
1
6
5
4
2
3
1
11
10
PT701
9
8
7
P7
P4 P8
P3
P2
P1
P5
P3
P1 T4AL 250V
T2AL 250V
P2
P5
P4
P6
P8
240V
220-
110-
120V
50/60Hz
220-240V~
P7
AC1
AC2
15
ED
121
21
1
111112
112111
1
2
P6
F702
F703
: AC110-120V/
(M,I)
1
1
44
WIRING DIAGRAM
RXD-V313(K)COVER1,1(98.12.119:46 y[W 17