DVD / CD PLAYER
DV-502/503/DVF-3050
DVF-3050-S/3550/3550-S
SERVICE MANUAL
© 2001-5/B51-5731-00 (K/K) 3470
70%
In compliance with Federal Regulations, following are repro-
duction of labels on, or inside the porduct relating to laser
product safety.
KENWOOD-Crop. certifies this equipment conforms to DHHS
Regulations No.21 CFR 1040. 10, Chapter 1, subchapter J.
DANGER : Laser radiation when open and interlock
defeated.
AVOID DIRECT EXPOSURE TO BEAM.
Caution : No connection of ground line if disassemble
the unit. Please connect the ground line on
rear panel, PCBs, Chassis and some others.
* Refer to parts list on page 18 .
Front Panel *
(A60-)
AUDIO OUTPUT
COMPONENT
VIDEO OUTPUT
VIDEO OUTPUT
S-VIDEO
DIGITAL OUTPUT
(PCM/BIT STREAM)
OPTICAL COAXIAL
L
R
Cr
Cb
Y
Window *
(B10)
AC power cord bushing
(J42-0350-08)
Button(PLAY) *
(K27-)
Button(SKIP) *
(K27-)
Button *
(K27-)
Button(POWER) *
(K27-)
Top cover *
(A01-)
AC power cord *
(E30-)
RCA jack
(E63-1227-08)
RCA jack
(E63-1226-08)
RCA jack *
(E63-)
RCA jack
(E63-1191-08)
Cord RCA 1p
(E30-7235-08)
Cord RCA 3p
(E30-2990-08)
Remote control unit (1)
(A70-1532-08)
Batteries (R03/AAA) (2)
*AC plug adaptor (1)
(E03-0115-05)
* Use to adapt the plug on the
power cord to the shape of the
wall outlet.
(Accessory only for regions
where use is necessary.)
Note related to transportation and move-
ment
Before transporting or moving this unit, carry out the follow-
ing operations.
1. Set the POWER key to ON without loading a disc.
2. Wait a few seconds and verify that the display shown
appears.
3. Set the POWER key to OFF.
Beware of condensation
When the difference between the internal temperature of the unit
and external atmosphere is large, dew (mist) may be produced on
the internal parts of the unit. In such a case, turn the unit ON and
leave it for a few hours until the condensation has dried up.
Be especially careful in the following conditions:
When the unit is brought into a place where there is a large differ-
ence in temperature between the previous location, when the
humidity of the listening room is high, etc.
Operation to reset
The microprocessor 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, exe-
cute the following procedure to reset the microprocessor and
return it to normal condition.
1 In POWER ON condition, keep the 7 (STOP) key and the ¡
(Search) key pressed at the same time.
2 When both keys are pressed, the region code of the unit, the
software version, etc. will be displayed on the display. (When
nothing is done, the display of this information continues.)
Example: 71 . 101 . 06:14
3 Press the ON/OFF key to go to Power OFF.
4 When Power ON is performed with the ON/OFF key, the set-
tings become the default factory settings.
¶ Please note that resetting the microprocessor clears the con-
tents stored in, it returns the microprocessor to the condition
when it left the factory.
Cautions
DV-502/503/DVF-3050/3550
2
CONTENTS / ACCESSORIES / CAUTIONS
CONTENTS / ACCESSORIES / CAUTIONS ............. 2
DISASSEMBLY FOR REPAIR....................................3
BLOCK DIAGRAM ......................................................4
CIRCUIT DESCRIPTION ............................................5
WIRING DIAGRAM ...................................................10
PC BOARD .............................................................. 11
SCHEMATIC DIAGRAM .......................................... 15
EXPLODED VIEW ....................................................21
PARTS LIST..............................................................22
SPECIFICATIONS ......................................Back cover
Contents
Accessories
Attention
Please contact our KENWOOD Service Department in your side if you want the service information; Circuit Description. Full
Described Parts list and so. Information is available to you by internet from us.
DV-502/503/DVF-3050/3550
3
DISASSEMBLY FOR REPAIR
How to Remove Disc in unit
Slide the lever of the mechanism from bottom side as
figure if you can't get the disc on the tray.
The marking is located on the rear panel and says that
the component uses laser beams that have been clas-
sified as Class 1. It means that the unit is utilizing laser
beams that are of a weaker class. There is no danger of
hazardous radiation outside the unit.
CLASS 1
LASER PRODUCT
The marking of products using lasers
(Except for some areas)
CAUTIONS
ADDR
F-WE
F-RESET
F-DE
D-RAS0-
ADDR
RDNOTWR
DATA
D-CAS0-
D-CAS1-
+3.3V DIGITAL VCC
F/E SDATA
EXIT-DATA
+3.3V-RESET
F/E SCL
EXIT-BCLK
EXIT-DATAVALID
EXT-PSTART/ERROR
+12V MOTOR VCC
+8V MOTOR VCC
+5V DIGITAL VCC
SLIDER-IN(DRAWER-CCW-CTRL)
SLIDER-OUT(DRAWER-CW-CTRL)
SLIDER-OPEN/CLOSE(POWER-POSITION-P1)
+12V ANALOG VCC
+8V ANALOG VCC
+5V DIGITAL VCC
-8V ANALOG VCC
+12V MOTOR VCC
5V FRONT
+8V MOTOR VCC
+3.3V DIGITAL VCC
: AC240V~ 50Hz
: AC230V~ 50Hz
(X)
(T,E)
: AC110-120V/220-240V~
: AC120V 60Hz
50/60Hz
(K,P)
(Y,M)
F-CE
F-OE(DRAM OE)
-27V
FL
AC
FL
AC
+5VS
STBY
ON/OFF
CNTL
IR REMOCON
+5.6VS
VFD DATA OUT
VFD STB
VFD DATA IN
PCM1748E-DATA
LRCLK
BCK
PCMCLK
PCM1748E-CS
PCM1748E-CLK
AUDIO-MUTE
CVBS-OUT
Y-OUT
R(Cr)-OUT
C-OUT
B(Cb)-OUT
G(Y)-OUT
9
10
8
6
7
SPDIF
PIXCLK-27MHz
SCL
SDA
VIDEO-MUTE
VFD CLK
DATA
IRQ2
POWER CTL
L AUDIO
R AUDIO
GND
BLUE-OUT
GREEN-OUT
RED-OUT
CVBS-OUT
L-CH OUT
R-CH OUT
IC201
STI5519
FLASH MEMORY
IC401
8MBIT
M29F400T-90N1
HY57V651610BLTC-8
SDRAM-64MBIT
IC301
F/E & MECHA
TVM MECHA
SMPS
IC901
UPD16311
DAC
PCM1748E
L.P.F
BA4560
IC802-A-A
MIXED
MUTE
VIDEO
JK803-A
S-VIDEO
JK701
Cr
Cb
Y
RCA 3V
COAXIAL
BUFFER
OPTICAL
IC501
74HCU04
M24CO2
EEPROM
IC202
SCART PART
RCA PART
HNV-06SS74
FL
125MHz
L.P.F
MIXED
R-CH
L-CH
TR
BUFFER
& B.N.F.
& B.N.F.
BUFFER
TR
& B.N.F.
BUFFER
TR
& B.N.F.
BUFFER
TR
& B.N.F.
BUFFER
TR
& B.N.F.
BUFFER
TR
CVBS-OUT
Y-OUT
C-OUT
R(Cr)-OUT
B(Cb)-OUT
G(Y)-OUT
CVBS-
TV SCART
JK804
ONLY
(E,T) TYPE
(E,T) TYPE
EXCEPT
DIGIT
A
L
OUT
MPEG
DV-502/503,DVF-3050
DV
-502/503/DVF-3050/3550
4
BLOCK
DIAGRAM
DV-502/503/DVF-3050/3550
5
CIRCUIT DESCRIPTION
Note: Port list sorted by function for MPEG IC
Port No.
Port Name
I/O
Main
Alternate function
Function
Input
Output
Audio DAC
51
DAC SCLK
O
Over sampling clock
EXT AUD CLOCK
52
DAC PCMOUT0
O
PCM out 0
EXT AUD DATA
53
DAC PCMOUT1
-
PCM out 1 (unused)
EXT AUD REQ
54
DAC PCMOUT2
-
PCM out 2 (unused)
55
DAC PCMCLK
I/O PCM clock
56
DAC LRCLK
O
Left/Right clock
EXT AUD WCLK
57
SPDIF OUT
O
SPDIF out
48
VDD PCM
-
VDD(+3V3)
49
VSS PCM
-
GND
Clock & Reset
124
RESET
I
Chip reset
122
VDD PLL
-
VDD PLL
123
VSS PLL
-
GND
120
PIX CLK
I
27MHz main clock
PIOs and communication
186
PIO0(0) T STROBE
I/O PIO0(0)
UART0 data
187
PIO0(1) MOD SW
I/O PIO0(1)
ATAPI RD
188
PIO0(2) VFD STB
I/O PIO0(2)
ATAPI WR
189
PIO0(3) VFD CLK
I/O PIO0(3)
190
PIO0(4) VFD DATA OUT
I/O PIO0(4)
191
PIO0(5) VFD DATA IN
I/O PIO0(5)
PIO0(6) SLIDER SENSOR
192
OPEN/CLOSE
I/O PIO0(6)
(DRAWER POSITION)
193
PIO0(7) SLIDER IN
(DRAWER CCW/CTRL)
I/O PIO0(7)
194
PIO1(0) SDA
I/O PIO1(0)
SSC0 data (MTSR out/MRST in)
195
PIO1(1) SCL
I/O PIO1(1)
SSC0 clock
196
PIO1(2) SLIDER OUT
(DRAWER CW CTRL)
I/O PIO1(2)
PARA DVALID
197
PIO1(3) TXD(JIG)
I/O PIO1(3)
UART2 TXD
200
PIO1(4) RXD(JIG)
I/O PIO1(4)
UART2 RXD
201
PIO1(5) FRONT TXDI
I/O PIO1(5)
PARA SYNC
UART1 RXD
202
TRIGGER IN
I/O Trigger in for DCU
203
TRIGGER OUT
I/O Trigger out for DCU
204
PIO2(0) H/P IND
I/O Unused
205
PIO2(1) FRONT RXD
I/O Unused
206
PIO2(2) MIC IN
-
Unused
207
PIO3(8) MIC OUT
-
Unused
208
PIO2(4) AUDIO MUTE
I/O Audio mute
1
PIO2(5) RGB SEL(BLANK)
I/O RGB sel.(blank)
2
PIO2(6) VIDEO MUTE
I/O Video mute
3
PIO2(7) 16: 9 INDICATOR
I/O 16 : 9 indicator
6
PIO3(0) SCART H(TV/AUX)
I/O PIO3(0)
PARA DATA(0)
7
PIO3(1) POWER CTL
I/O PIO3(1)
PARA DATA(1)
8
PIO3(2)
I/O Unused
PARA DATA(2)
9
PIO3(3)
I/O Unused
PARA DATA(3)/CAPTURE IN0
10
PIO3(4) IR REMOCON
I/O PIO3(4)
PARA DATA(4)/CAPTURE IN1
UART1 RTS(RTS1)
11
PIO3(5)
I/O Unused
PARA DATA(5)/CAPTURE IN2
UART2 RTS(RTS2)
12
PIO3(6)
I/O Unused
PARA DATA(6)/UART1 CTS
(CTS1)
COMP OUT1
1. MPEG: STI5519