Hitachi DVK 2 Service Manual

Page 1

SERVICE GUIDE

DVD Marketed in July 1998
DVD
PLAYER No.B002

Please carefully read this guide before using the device. The Hitachi DVD Player has been designed to prevent fire. electrical shock,

ADV E injury, or harmful radiation. It has been legally fabricated in accordance with the Electrical Appliances Act. Therefore, when using the
IC device, please follow advice in this service guide to keep it safe to use.

1. In brief

DV-K2 is a device for DVD playback.
This device is to be used by connecting it to the video input
terminal of a TV set.

o 2. Features

>Disc navigation system facilitates program search.
>Speedy operation by 2x speed drive.
>Equipped with 2 mike input Karaoke

Contents
1. Briefly ................................ 1 8. Block diagram ......................... 25
2. Features .............................. 1 9. Connector wiring diagram ................ 27
3. Specifications .......................... 3 10. Basic circuit diagram ................... 29
4. Names of parts ......................... 3 11. Substrate diagram ..................... 42
5. Description of adopted new technology ...... 5 12. Wiring diagram ....................... 56
6. Service points ......................... 20 13. Breakdown sketch ..................... 58
7. Trouble shooting ....................... 21 14. Parts list ............................ 60

Specifications may be changed as improvements are made without advance notice. The marked price
does not include consumption tax.

HITACHI

Page 2

DV-K2

PRECAUTIONS FOR SAFETY (Please follow.)

Before undertaking repair work, please read through this [Precautions for safety].

The following points should be observed in order to prevent accidents from happening and to

ensure the safety of the device.

0 Degrees of danger or damage that can be caused by faulty operation are indicated by the
following marks:

A WARNING

Under this mark, there is "Possible death or serious injury".

A CAUTION

Under this mark, there is "Possible injury or material damage".

O The following marks identify actions to be taken:

A

This mark indicates items to which 'You
should pay attention.

This mark indicates items You have to
accomplish'.

A

This mark indicates: 'You should be
cautious of electric shock'.

®

This mark indicates 'Forbidden items"

A WARNINGWI

A

.You should pay attention.

'Precautions for use' of the manual.

Where a special attention is required, it is
indicated by a label or stamp. For example,
on the cabinet, chassis, or parts.

Please respect the indicated items and the

A

.You should be cautious against electric
shock.

Please be careful during operations because

.The original part installation and wiring route
shall be restored.

For safety, some parts are insulated by a
tube or a tape, or installed without contact
with substrate. The internal wiring is kept a
distance from hot or high voltage parts by
clamps or routing. Please restore them as
initially done to prevent electric shock or fire
from happening.

there are high voltage and recharging parts
inside. An electric shock or death may happen
by touching them.

When disassembling, assembling, or
replacing a part, the power plug has to be
pulled off.

Touching by error a powered part may cause
an electric shock, death, or injury.

0

.Please use designated parts.

.Please check safety after servicing.

Please check if dismounted screws, parts,
and wires are reinstalled as before and if the
area surrounding the repair is damaged.
Please also measure insulation resistance
with a ohmmeter and to confirm that it is
more than 1M 9.

There is risk of electric shock or fire it the
insulation resistance is less than 1M 9,

Parts are characterized by uninflammability
and voltage resistance. Therefore, parts
having these same characteristics must be
used in replacement.

Especially for parts important in insuring
safety, identified byA in the wiring diagram
or parts list, a part with the identical part
number shall be used.

If a pan with a different part number is used,
an electric shock or a fire may occur.

O .

C)

3. Specification

DV-K2

Output level

Common

Model DV-K2 Mass 4.1 kg
Laser type Semiconductor laser Overall size 43,4(W)X31.5(D)X9.8(H)cm

Wave length:650nm (DVD), Allowable operating +5°C~+35°C
Electric energy 780nm(CD,VCD) temperature
Power AC100V,50/60Hz both Allowable operating 15%-75%(without condensation)

22W humidity

3 image output terminal [1 system] (32 output)
Y output level 1Vp-p (75 (2) Output terminal 8 terminal
C output level 286mVp-p (75 (2)
Image Output terminal [1 system]
1Vp-p (759 underbad, synchronous negative) Output terminal Pin jack

Audio output terminal [2 systems]

Digital audio output level 200mVrms(t KHz,-20dB)

Channels 2 channels (continued)

characteristics» CD:4HZ~20KHZ(EIAJ) Dynamic range
Frequency DVD:4Hz~22KHz(48K sampling) Total high frequency
characteristics distortion rate

Wow flutter

Frequency characteristics

DVD:4Hz~44KHz(96K sampling)
110dB

100dB

0.003%

Measuring limits: less than
(10.001%W.PEAK) (EIAJ)

Other terminals

Optical digital output: (Dolby Digital /LPCM,LPCM, may be switched to OFF) optical connector

Accessories
Remote control (DV-FtMZ) 1 AV cord 1
Singles type battery (ESP) 2 Power cord 1

4. Name of parts

(Remote control set
POWER BUI'l'ON

OPEN/CLOSE BUTTON

ZOOM BUTTON
ANGLE BUTTON
DISC NAVI BU'I'I'ONK.
SUBTITLE BUTTONM
AUDIO BUTTONM
RETURN BUTTONw-TT'T
DISC MENU BUTTON
KARAOKE BUTTONwé/i/i
A-B BUTTON//'
STEP BUTTON /
PAUSE BUTTON/ /
STOP BUTTON/

DISPLAY BUWONk
§Q

"PAUSE ISTOF DPLAY LAS'T

(3.©

NUMERICAL BUTTON
CLEAR BUTTON
TITLE BUTTON
ENTER BUTTON
DIRECTION BUTTON
~---«SET UP BUTTON
SKIP BUTTON
WSPEED BUTTON
;T-- LAST BUTTON

PLAY BUTTON

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