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DVD / CD PLAYER
DV-505/DVF-R4050/-S
SERVICE MANUAL
© 2001-10 PRINTED IN KOREA
B51-5758-00 (K/K) 3445
Front panel *
(A60-)
Window *
(B10-)
AUDIO
OUTPUT
COMPONENT
VIDEO OUTPUT
VIDEO
OUTPUT
Cr
Cb
Y
S-VIDEO
OPTICAL
COAXIAL
L
R
DIN socket
(E68-0018-08)
Top cover *
(A01-)
* Refer to parts list on page 19 .
In compliance with Federal Regulations, following are repro-
duction of labels on, or inside the product relating to laser
product safety.
KENWOOD-Corp. 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.
Button *
(K27-)
Button *
(K27-)
Button *
(K27-)
Button(POWER) *
(K27-)
RCA jack
(E63-1244-08)
AC power cord bushing
(J42-0350-08)
AC power cord *
(E30-)
RCA jack
(E63-1227-08)
RCA jack
(E63-1192-08)
70%


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DV-505/DVF-4050/-S
2
CONTENTS / ACCESSORIES / CAUTIONS
CONTENTS / ACCESSORIES / CAUTIONS ............. 2
DISASSEMBLY FOR REPAIR....................................3
BLOCK DIAGRAM ......................................................4
WIRING DIAGRAM .....................................................5
PC BOARD..............................................................10
SCHEMATIC DIAGRAM...........................................14
EXPLODED VIEW....................................................21
PARTS LIST.............................................................23
SPECIFICATIONS......................................Back cover
Contents
Cord RCA 1p
(E30-7235-08)
Cord RCA 3p
(E30-2990-08)
Remote control unit (1)
(A70-1570-08)
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 movement
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.
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)
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, execute the
following procedure to reset the microprocessor and return it to
normal condition.
÷Please note that resetting the microprocessor clears the
contents stored in, it returns the microprocessor to the condi-
tion when it left the factory.
1In POWER ON condition, keep the DISC 3 key and the 4
4
4
4
4
(Skip) key pressed at the same time.
2When 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 . 16 . 06:14
3Press the DISC 4 key and the 4
4
4
4
4 key at the same time.
"BYE" will be shown on the display.
4Press the ON/OFF key to go to Power OFF.
5When Power ON is performed with the ON/OFF key, the
settings become the default factory settings.
Cautions
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.


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DV-505/DVF-4050/-S
3
DISASSEMBLY FOR REPAIR
1. How to open the tray if it does not come
out. (Fig. 1)
1. Turn the gear ccw in the direction of the arrow in the
drawing through the hole on loading chassis bottom.
2. Pull out the tray frontward by hand when it comes just out.
2. How to Remove the Tray (Fig. 2)
1. Remove the front panel, front chassis, power supply and
the left mecha. frame.
2. Pull out the tray frontward (
1) to match the dent of tray
(
2) to the protrusions of the mecha. base (3).
3. Remove the tray upward (
4).
3. How to assemble the Tray (Fig. 3,4)
1. Adjust the position of the plastic cam lifter (
1) and main
gear (
2) in the drawing (1 so that the traverse unit will
reach the lowest position.
2. Attach the tray in the direction (
3, 4) of the arrow in the
drawing.
3. Push the tray backward.
1
3
2
4
3
4
1
2
Fig. 1
Fig. 3
Fig. 4
Fig. 2


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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
SST39VF800505
HY57V651620
SDRAM-64MBIT
IC301
F/E & MECHA
TVM MECHA
SMPS
IC901
CXP825P400-1
DAC
PCM1748KE
L.P.F
BA4560
IC303-A-A
MIXED
MUTE
VIDEO
JK803-A
S-VIDEO
JK803-B
JK701
Cr
Cb
Y
RCA 3V
COAXIAL
JK801
IC805
BUFFER
OPTICAL
IC501
74HCU04
M24C02
EEPROM
IC202
SCART PART
RCA PART
HNV-06SS75
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-505,DVF-R4050
DV
-505/DVF-4050/-S
4
BLOCK
DIAGRAM


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DV-505/DVF-4050/-S
5
CIRCUIT DESCRIPTION
Port No.
Port Name
I/O
Main Function
Alternate function
Input
Output
Audio DAC
51
DAC SCLK
O
Over sampling clock
EXT AUD CLOCK
52
DAC PCMOUT0
O
PCM out 0
EXD 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)
O
Rotary motor (+)
189
PIO0(3)
O
Rotary sen
190
PIO0(4)
O
Disc sen
191
PIO0(5) SLIDER SENSOR
OPEN/CLOSE (CLOSE POSITION)
I/O
PIO0(5)
192
PIO0(6) SLIDER SENSOR OPEN/
CLOSE (DRAWER POSITION)
I/O
PIO0(6)
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
PIO0(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
-
Unused
205
PIO2(1) FRONT RXD
I/O
PIO2(1)
PARA SYNC
206
PIO2(2)
-
Unused
207
PIO2(3)
-
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
Unused
11
PIO3(5)
I/O
Unused
PARA DATA(5)/
CAPTURE IN2
UART2 RTS(RTS2)
Port list sorted by function for MPEG IC(Main IC201)