Kenwood DVFR 4050 S Service Manual

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DV7505(K)INT1P 01.10.102:49 PM «5? 1 /\

WgéAEYSE/RDVF-R4OSO/S KENWOOD

SERVICE MANUAL

©2001-1O PRINTED IN KOREA
351-5758-00 (K/K) 3445

Front panel * Window * Button * Button *
(A60-) (B10-) (K27-) (K27-)

KENWOOD

k
Button(POWER) * Button *

(\ (K27-) (K27-)
\ /

Top cover * DIN socket RCA jack AC power cord bushing

(A01 -) (E68-0018-08) (E63-1244-08) (J42-0350-08)

@fi ©
6? E)
RCA jack RCA jack AEC3 power cord *

(E63-1192-O8) (E63-1227-08)

* Refer to parts list on page 19 .

In compliance with Federal Regulations, following are repro- KENWOOD-Corp. certifies this equipment conforms to DHHS
duction of labels on, or inside the product relating to laser Regulations No.21 CFR 1040_ 10, Chapter 1, subchapterJl
product safety.

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 7.
rear panel, PCBs, Chassis and some others.

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DV7505(K)INT1P 01.10.10 2:49 PM NH? 2

DV-505/DVF-4050/-S

CONTENTS / ACCESSORIES / CAUTIONS

Batteries (R03/AAA) (2)

@

Remote control unit (1)
(A70-1570-08)

Cautions

Contents
CONTENTS / ACCESSORIES / CAUTIONS ............. 2 SCHEMATIC DIAGRAM ........................................... 14
DISASSEMBLY FOR REPAIR. EXPLODED VIEW .21
BLOCK DIAGRAM ................... PARTS LIST ........ .23
WIRING DIAGRAM SPECIFICATIONS ...................................... Back cover
PC BOARD ..........
Accessories
,
Cord RCA 1p Cord RCA 3p
(E30-7235-08) (E30-2990-08) *AC plug adaptor (1)

(E03-0115-05)
Use to adapt the plug on the
power cord to the shape of the
\E\\Q/ 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.

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.

uPlease note that resetting the microprocessor clears the

contents stored in, it returns the microprocessor to the condi-
tion when it left the factory.

0 In POWER 0N condition, keep the DISC 3 key and the K1
(Skip) key pressed at the same time.

9 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 . 16. 06:14

9 Press the DISC 4 key and the K1 key at the same time.
"BYE" will be shown on the display.

0 Press the OIWOFF key to go to Power OFF.

6When Power ON is performed with the ON/OFF key, the
settings become the default factory settings.

The marking of products using lasers
(Except for some areas)

CLASS 1
LASER PRODUCT
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.

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.