Kenwood DV-4050 Schematic
70%
DVD VCD CD PLAYER
STANDBY
ON/STANDBY
STANDBY
ON/STANDBY
POWER
DISC
5
changer
DISC SKIP
DISC 1 DISC 2 DISC 3
DISC 4
DISC 5
OPEN/CLOSE
0
3
8
7
VIRTUAL
SURROUND
4¢
COAXIAL OPTICAL
DIGITAL OUTPUT
(
PCM/BIT STREAM
)
OUTPUT
COMPONENT VIDEO OUTPUT SUB WOOFER
Y
Cb Cr
S VIDEO
L
1 2
R
2
OUTPUT LINE OUTPUT
VIDEO
1
DV-4050-B
DVF-R6030-B
SERVICE MANUAL
Knob
(K29-7801-13)
Knob
(K29-7804-13)
Front glass
(B10-3610-02)
Knob
(K29-7822-13)
© 2000-9/B51-5661-00 (K/K) 1399
Panel *
(A60-)
Knob
(K29-7823-13)
Metallic cabinet
(A01-3776-01)
Pin jack
(E63-1127-05)
In compliance with Federal Regulations, following are reproduction of labels on, or inside the porduct relating to laser
product safety.
Oscillating module
(W02-2732-05)
Cylindrical receptacle
(E56-0032-05)
Pin jack
(E63-1159-05)
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
Pin jack
(E63-1157-05)
Pin jack
(E63-1161-05)
Pin jack
(E63-1162-05)
AC power cord bushing
(J42-0083-05)
* Refer to parts list on page17.
the unit. Please connect the ground line on
rear panel, PCBs, Chassis and some others.
AC power cord *
(E30-)
DV-4050-B/DVF-R6030-B
CONTENTS / ACCESSORIES
Contents
CONTENTS / ACCESSORIES .................................. 2
DISASSEMBLY FOR REPAIR....................................3
ADJUSTMENT ............................................................5
PC BOARD..................................................................7
Note: Please contact our KENWOOD Service Department in your side if you want the information;
Microprocessor(MN101C35D) ports explanation and full (previous) format parts list on this
model. You can be available them by internet from us.
SCHEMATIC DIAGRAM ............................................ 9
EXPLODED VIEW ....................................................15
PARTS LIST..............................................................17
SPECIFICATIONS ....................................................20
.
Accessories
Audio cable (1)
(E30-0505-05)
Remote control (1)
(A70-1420-05)
Battery cover(A09-1213-08)
Note: Test Mode in detail is written in
DV-4900/DV-4700/DVF-R6030/DVF-R9030 Service Manual(B51-5665-00).
Video cable (1)
(E30-1427-05)
Optical digital audio cable (1)
(B19-1529-05)
Batteries (2)
for remote control
2
DISASSEMBLY FOR REPAIR
1
5
2
3
6
4
5
HOOK ( x2)
HOOK
x2
Guide
6
3
4
HOOK
GUIDE
ARM
DRIVE
GEAR
HOOK
LOADING
GEAR (A)
(Free)
PROTRUSION OF TRAY
2
1
5
REAR
1. How to Remove Tray
1. Remove the front panel and flexible cable.
Disassemble the X25 and power supply pcb with sub
chassis if it is a difficult.
2. Push and hold the lever(
out the tray to frontwards(
meets with guide(
3. Push hooks(
from guides(
).
), both sides, inwards and release them
).
4. Pull hooks of tray(
upwards(
).
)to clockwise and pull barely
) where the hook of tray( )
) outwards and remove the tray
DV-4050-B/DVF-R6030-B
2. How to Assemble Tray
1. Adjust the position of drive gear as figure( ).
Check traverse unit is at the lowest position.
2. Load the tray on the loading mechanism.
Check the position where the loading gear(A) is free(
3. Meet the hooks with guides and push hooks to load the
tray(
4. Set the right side hook to loading mechanism(
5. Set the left side hook to loading mechanism with pulling it
).
outwards(
).
6. Push the tray backwards(
).
)
).
3
DV-4050-B/DVF-R6030-B
2
4
2
1
3
Tray
guide
Guider
(L)
Protruding
part
5
5
5
6
6
6
X13-7770-10
CN1
CN2
Clamper weight
Spacer
Magnet
Clamper
REAR
Tilt adjustment screw 2
Tilt adjustment screw 1
Tangential adjustment screw
DISASSEMBLY FOR REPAIR
3. How to Remove Clamper Ass'y
1. Remove screws.
5. How to Disassemble Traverse Unit
1. Move the traverse to upward by turning motor pulley
(
~ ).
2. Make the gap between the tray guide and guider(L) with
driver(
3. Remove the screws(
)
, ).
4. How to Disassemble Clamper Ass'y
6. Tangential and Tilt Adjustment
1. Turn the power on with pressing the DISC 1 key.
(Display shows "INSPECTION"; test mode.)
2. Press the DISC1 key in playback mode again.
Display shows "Jitter *** %"
3. Turn off if cancel test mode.
4
DV-4050-B/DVF-R6030-B
CIRCUIT DESCRIPTION
Microprocessor pin description : MN101C35D(X14,IC1)
Pin No. Pin Name I/O Description
1 CMD O Serial output for system communication.
2 STATUS I Serial input for system communication.
3 DSPCLK I Serial clock for system communication.
4 DATA O Data signal output to buffer.
5 STB O Strobe signal output to buffer.
6 CLK O Clock signal output to buffer.
7 CLR O Clear signal output to buffer.
8 VDD - +5.0V power supply.
9 OSC2 O Main clock (8MHz) output.
10 OSC1 I Main clock (8MHz) input.
11 VSS - Connected to ground.
12 XI - Connected to ground.
13 XO - Unused.
14 MMOD - Connected to ground.
15 VREF- - Connected to ground.
16~18 KEYIN0~2 I Key signal input.
19,20 PA3,PA4 - Unused.
21 CLOSE SW I Disc clamp control.
22 OPEN SW I Control port of tray open/close for changer mechanism.
23 PA7 - Unused.
24 VREF+ - A/D reference voltage.
25 TM+ O Control port of tray motor.
26 RESET I Reset signal input.
27 RM+ O Control port of tray motor.
28 TRM- O Control port of tray motor.
29 MECHA VR O Control port of tray motor.
30 POWER O Control port of power supply.
31 POWER MUTE O Power on/off control.
32 P15 - Unused.
33 REMOCON I Input port of remote control signal.
34,35 P21,P22 - Unused.
36 POSITION I Detection port of tray position.
37 SPEED I Detection port of rotation speed for tray.
38~ P25,P30~P32 - Unused.
42 STBY-LED O Control port of standby LED.
43 P51 - Unused.
44 VSS-LED O Control port of VSS LED.
45,46 DESTINATION IN I Unused.
47~49 DESTINATION OUT O Unused.
50 DIGI 4 - Unused.
51~63 1G~13G O FL grid output.
64~80 P17~P1 O FL segment output.
81~98 SEG24~SEG41 - Unused.
99 SW MUTE O Control port of sub woofer.
100 VFL - FL power supply.
5
DV-4050-B/DVF-R6030-B
No. ITEM
INPUT
SETTING
OUTPUT SETTING
ALIGNMENT
POINT
ALIGNMENT
FOR
FIG.
1
BRIGHTNESS
100% COLOR
BAR DISC
Connect the oscilloscope to
Y output with 75-ohms
resistor
VR1
Y-signal =
1000mV±30mV
FIG.1.
2
CHROM LEVEL
100% COLOR
BAR DISC
Connect the oscilloscope to
COMPOSIT output with 75-
ohms resistor
VR2
Chrom-signal =
285mV±14mV
FIG.2.
3
Cb LEVEL
100% COLOR
BAR DISC
Connect the oscilloscope to
Cb output with 75-ohms
resistor
VR3
Cb-signal =
648mV±14mV
FIG.3.
4
Cr LEVEL
100% COLOR
BAR DISC
Connect the oscilloscope to
Cr output with 75-ohms
resistor
VR4
Cr-signal =
648mV±14mV
FIG.4.
1000mV±30mV
Y
4.7µs
-2.86
0
714
(100IRE)
[mV]
white
yellow
cyan
green
magenta
red
blue
black
714
641
516
443
324
252
127
54
285mV
±14mV
120
IRE
Peak white
Blank
100
0
-40
324
-324
0
[mV]
0
109
215
324
0
-109
-215
-324
Cb
648mV
±14mV
324
-324
0
[mV]
Cr
648mV
±14mV
0
53
271
324
-53
0
-271
-324
ADJUSTMENT
FIG. 1 FIG. 2
FIG. 3 FIG. 4
6
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