Kenwood DP-3080Mk??/3090, DP-3080MkII, DP-3090 Service Manual

COMPACT DISC PLAYER

DP-3080MkΙΙ/3090

SERVICE MANUAL

© 1997-8/B51-5349-00 (K/K) 2172

In compliance with Federal Regulations, following are reproductions
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.

1

-ON –STANDBY

P.MODE CHECK CLEAR EDIT

TIME

DISPLAY

REPEAT

PEAK

SEARCH

234567890

DISPLAY

76

¢4

¡1

STOP PLAY/PAUSE

+10 RANDOM

PHONES

0

Knob
(k29-6469-08)

Phone jack
(E11-0339-08)

L

R

OUTPUT

DIGITAL
OUTPUT

SYSTEM CONTROL

SL16 XS 8

ƒ

OPTICAL

KENWOOD badge
(B43-0302-04)

Front glass
(B10-2403-08)

Dressing panel
(A21-3603-08)

Knob
(k29-6815-08)

Metallic cabinet
(A01-3356-08)

Power cord bushing
(J42-0200-08)

Phono jack
(E63-0188-08)

Slide switch
(S62-0069-08)

AC power cord *
(E30-)

Miniature phone jack
(E11-0333-08)

Optic receving module
(W02-2620-08)

Knob
(K29-6471-08)

Escutcheon
(B07-2388-08)

Panel *
(A60-)

Illust is DP-3080MkΙΙ.

* Refer to parts list on page 14.

CONTENTS / ACCESSORIES / CAUTIONS

DISASSEMBLY FOR REPAIR

Beware of condensation

When water vapor comes into contact with the surface of cold
material, water drops are produced.
If condensation occurs, correct operation may not be possible, or
the unit may not function correctly.
This is not a malfunction, however, the unit should be dried.
To do this, turn the ON/STANDBY switch ON and leave the unit
as it is for several hours.

Audio cord...........................................(1)

(E30-2841-08)

AC plug adaptor.................................(1)

(E40-9981-08) M type only

Remote control unit ..........................(1)

(A70-1181-08) : RC-P03050

Battery cover (A09-0356-08)

Batteries (R6/AA)................................(2)

SCHEMATIC DIAGRAM............................................ 7

EXPLODED VIEW .................................................. 12

PARTS LIST..............................................................14

SPECIFICATIONS....................................................17

REMOTE CONTROL UNIT

RC-P0505

System control cord..........................(1)

(E30-2629-05)

1 2 3 4 5

6 7 8 9 10

11 12 13 14 15

16 17 18 19 20

TRACK

no d sc

1

Be especially careful in the following conditions:

¶ When the unit is brought from a cold place to a warm place, and

there is a large temperature difference.

¶ When a heater starts operating.
¶ When the unit is brought from an air-conditioned place to a place

of high temperature with high humidity.

¶ When there is a large difference between the internal temperature

of the unit and the ambient temperature, or in conditions where
condensation occurs easily.

Note related to transportation and movement

Before transporting or moving this unit, carry out the following
operations.

1. Turn the power ON but do not load a disc.

2. Verify that the display shown appears.

3. Wait a few seconds and set the unit to STANDBY mode.

1), then remove the clamper

fram.

on the position A (3).

the leaf switch in the left direction (5).

pull out the tray (7).

1

1

2

3

6

4

7

CP401

CP201

5

position
"A"

DP-3080MkΙΙ/3090

3

CIRCUIT DESCRIPTION

Pin No. Pin name I/O Description

1 GFS I NOT USED
2 RMC I REMOCON INPUT PRT

3-5 – I NOT USED

6 MUTE O DIGITAL MUTE (ON: "H")
7 MLEN O TC9423F LATCH CONTROL
8 MCK O TC9423F CLOCK CONTROL

9 SENS I SENSE INPUT FROM CXD2507
10 MDT O TC9423F DATA CONTROL
11 SQCK O CLOCK TO READ Q_DATA
12 SUBQ I Q_DATA INPUT PORT
13 – O NOT USED

14-17 KR0-KR3 I KEY INPUT PORT

18 OPEN_M O OPEN MOTOR (ACTIVE "L")
19 CLOSE_M O CLOSE MOTOR (ACTIVE "L")
20 MON O SPINDLE MOTOR ON "H"
21 – O NOT USED
22 DATA O DATA OUT TO CXD2507
23 XLT O LATCH OUT TO CXD2507
24 CLK O CLOCK OUT TO CXD2507
25 FOK I FOCUS OK INPUT PORT
26 LDON O LASER OUTPUT (ON: "L")
27 A_MUTE O ANALOGUE MUTE (ON: "H")
28 XRST O IC RESET PORT
29 AD_IN I A/D CONVERT INPUT PORT
30 RESET – (RESET)
31 XI – (XTAL1)
32 XO – (XTAL0)
33 Vss – (GND)

34-46 – O NOT USED
47-57 S11-S1 O FL SEGMENT PORT
58-61 – O NOT USED
62-70 G9-G1 O FL DIGIT PORT

71 Vfdp – FL DRIVER POWER (-26V)
72 Vdd – (+5V)
73 NC – CONNECTED TO Vdd
74 FED_SW I LIMIT SWITCH (ON: "L")
75 MODE_SW I 8/16BIT (L: 8BIT , H: 16BIT)
76 S_DATA I/O SYSTEM SERIAL DATA
77 S_BUSY I/O SYSTEM SERIAL BUSY
78 SCCR I SCOR FROM CXD2507
79 OP_SW I OPEN SWITCH (ON: "L")
80 CL_SW I CLOSE SWITCH (ON: "L")

1. Microprocessor ; (MAIN unit ; IC601)

1-1 Pin description

ADJUSTMENT

No.

1

2

3

FOCUS

OFFSET

TRACKING

BALANCE

TRACKING

GAIN

TEST DISC

TYPE 4

Test disc

type4 Apply

signal of

1.2kHz

50mVrms to

TP301 pin5-6.

TEST DISC

TYPE 4

CONNECT AN

OSCILLOSCOPE

to TP301

CH1 : RF(

1)

CONNECT AN

OSCILLOSCOPE

to TP301

CH1 : TE1(5)

CH2 : VC(4)

Connect a LPF to

TP301 pin 5-6 to

which you connect

an oscilloscope or

AC voltmeters.

STOP

PLAY

SHORT–CIRCUIT

TP2 WITH TP5

AFTER THE

ADJUSTMENT

REMOVE

SHORT–WIRE

PLAY

VR301

FE OFFSET

VR302

TE BALANCE

VR303

TE GAIN

DC=0V

SYMMETRY

BETWEEN

UPPER AND

LOWER

Two VTVMs

should read the

some value.

(e)

ITEM

INPUT

SETTING

OUTPUT

SETTING

PLAYER

SETTING

ALIGNMENT

POINT

ALIGN FOR FIG.

1. WITH PRESSING PLAY/PAUSE ( 66) TURN THE POWER ON TO ENTER THE TEST MODE.

2. SET THE TEST DISC TO DISC NO SONY YEDS–18. (TYPE4)

GND

TP301

+

_

L.P.F.

+

+

L.P.F.

VTVM

VTVM

1
2
3
4
5
6
7

ACEGIBDFHJ

2

1

3

5

7

4

6

Refer to the schematic diagram for the value of resistors and capacitors.

PC BOARD(Component side view)

5 6