Kenwood D-W320V Manuel utilisateur

VIDEO OUTPUT

AUDIO OUTPUT SYSTEM

CONTROL

AC110 120V

AC220 240V

DISC

SELECTOR

1 2KARAOKEKEY CONTROL

RANDOM REPEAT AUTO PAUSE

ECHO

LEVEL

MIC MIX 21MIC 21

ON SCREEN

DIGEST

ON/STANDBY

DIGITALVIDEO

TWIN VIDEO CD PLAYER D-W320V

TWIN VIDEO CD PLAYER

D-W320V

SERVICE MANUAL

In compliance with Federal Regulations, following are reproduc-

tions of labels on, or inside the product relating to laser product

safety.

KENWOOD-Crop. certifies this equipment conforms to DHHS

Regulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.

DANGER : Laser radiation when open and interlock defeated.

AVOID DIRECT EXPOSURE TO BEAM

Panel assy

(A60-1413-08)

Front glass

(B10-2467-08) Tray panel

(A21-3664-08)

Phone jack

(E11-0384-08) Tray panel

(A21-3663-08)

Knob

(K29-6973-08)

Knob

(K29-6974-08)

Phono jack

(E63-1036-08)

Slide switch

(S90-0125-08)

Miniature phone jack

(E11-0188-05)

Power cord bushing

(J42-0083-05)

AC power cord *

(E30-)

* Refer to parts list on page 24.

D-W320V COVER( 97.11.28 11:11 PM y[W 2

D-W320V

CONTENTS / ACCESSORIES

AC plug adapter......... (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.)

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

(E30-0505-05)

CONTENTS .................................................................2

DISASSEMBLY FOR REPAIR.....................................3

CIRCUIT DESCRIPTION.............................................4

ADJUSTMENT...........................................................10

PC BOARD ................................................................11

SCHEMATIC DIAGRAM............................................15

EXPLODED VIEW .....................................................22

PARTS LIST...............................................................24

SPECIFICATIONS .......................................Back cover

Accessories

CONTENTS

System control cord....(2)

(E30-2733-05)

Video cord...................(1)

(E30-1427-05)

D-W320V COVER( 97.11.28 11:11 PM y[W 3

D-W320V

DISASSEMBLY FOR REPAIR

1. Push the on / standby key.

2. Push the open / close key (DISC 1).

3. Remove the left tray panel.

4. Push the open / close key (DISC 2).

5. Remove the right tray panel.

6. Push the open / close key (DISC 2).

7. Turn the AC power off.

8. Remove 5 screws (1) and front panel.

9. Turn the tray drive gear to clockwise (2) to remove right

tray.

10. Remove the hook (3) and then pull out the right tray.

11. Turn the tray drive gear to counterclockwise (4).

(Pickup down (5) îCD mecha moves (6) îPickup up

îLeft tray comes out (7))

12. Remove the hook (same as 3) and then pull out the left

tray.

1. HOW TO REMOVE THE TRAYS.

2. HOW TO REMOVE THE CD MECHANISM HOLDER

3. HOW TO MOUNT THE CD MECHANISM HOLDER

Fig.1

1. Remove 3 screws (1).

2. Remove the clamper guide to arrow mark (2).

3. To down the CD mechanism holder, set the slider to arrow

mark (4) by turning the tray drive gear (5).

4. Remove the CD mechanism holder to arrow mark (3).

1. Set the slider to arrow mark (4) by turning the tray drive

gear (5).

2. Inset the CD mechanism holder into the hole of slider (6).

CHASSIS

CD MECHANISM HOLDER

(SUB CHASSIS)

CLAMPER

GUIDE

SLIDER

Fig.2

4. HOW TO MOUNT THE TRAYS.

1. Mount the clamper guide (1).

2. Fix 3 screws (2).

3. Set the slider to arrow mark (A, B) by turning the tray

drive gear.

4. Insert the tray (A) to guide (B) on slider (3).

5. Turning the tray drive gear to clockwise (4) set the slider

to arrow mark (C).

6. Insert the tray (B) to guide (C) on slider (5).

TRAY(A)

TRAY(B)

Fig.3

5. HOW TO REPLACE THE PICKUP

1. Remove 4 screws (1) and turn over the CD mechanism

assy.

★ Short the short-land of the pickup before the following pro-

cedures (2)

2. Remove 3 connectors (3) and 3 screws (4).

3. Remove the disc motor ass'y (5).

4. Remove washer and gear (6).

5. Remove 2 screws (7) and rod (8).

6. Remove the pickup ass'y (9).

Note : When mounting the pickup, in the reverse order of dis-

assembly. Unsolder the short land after connecting

the connectors.

short-land

DRIVE GEAR

(DISC MOTOR A`ssy)

Fig.4

D-W320V COVER( 97.11.28 11:11 PM y[W 6

PIN NO. TERMINAL NAME I/O FUNCTION ACT

1~7 7~1G O FL grid drive –

8 VDD – VDD +5V –

9 P/N I O PAL/NTSC INPUT H : PAL H

10 P/N O I PAL/NTSC OUTPUT H : PAL H

11 M/A O PAL/NTSC MANUAL/AUTO SELECT H : MANUAL H

12 POWER O POWER ON / OFF H : ON H

13 C-BUSY O VIDEO CD DATA STATUS H : BUSY H

14 CLOCK I VIDEO CD DATA CLOCK H/L

15 C-DATA – DATA SIGNAL to MPEG BOARD H/L

16 M-DATA – DATA SIGNAL from MPEG BOARD H/L

17 RESET – HARD RESET L

18 TR+ – TRAY MOTOR CONTROL H : OPEN H

19 TR- – TRAY MOTOR CONTROL H : CLOSE H

20, 21 AVSS – GND –

22 PU IN – PICK UP LOCATION L : INSIDE L

23 UP SW – MECHA POSITION L : DISC1 & UP L

24 TRSW2 – DISC2 TRAY SW L : CLOSE H : OPEN –

24, 25 TRSW2, 1 I DISC2 TRAY SW L : CLOSE H : OPEN A/D

26~28 KEY3~1 I KEY INPUT A/D

29 AVDD – AVDD +5V –

30 AVREF – AVREF +5V –

31, 32 XT1, 2 – NC –

33 VSS – GND –

34 X1 – X-TAL IN 4.19 MHz –

35 X2 – X-TAL OUT 4.19 MHz –

36 WRQ I WRITE REQUEST H

37 COIN O COMMAND DATA TO CD DSP H/L

38 IFL O KARAOKE IC DATA H/L

39 IFS O KARAOKE IC CLOCK H/L

40 IFD O KARAOKE IC LATCH H

41 CQCK O CLOCK TO CD DSP H/L

42 SQOUT I SQ DATA FROM CD DSP H/L

43 RWC O READ/WRITE CONTROL H

44 M-BUSY O MAIN MICOM STATUS H : BUSY H

45 SBUSY I/O SYSTEM CONTROL DATA H/L

46 SDATA I/O SYSTEM CONTROL STATUS H

47 REMOCON I REMOCON INPUT L

48 VPP – GND –

49 SP CONT O TRAY MOTOR SPEED CONTROL H : HIGH SPEED H

50 SL- O SLED MOTOR REVERSE H

51 SL+ O SLED MOTOR FORWARD H

52 VDD – VDD +5V –

53 FLAT O KEY CON LED NATURAL H : ON H

54 SHARP O KEY CON LED SHARP H : ON H

55 MATURAL O KEY CON LED FLAT : H : ON H

56 C-RESET O CD DSP, MPEG BOARD, MPEG MICOM RESET H

57 M-MUTE O MIC MUTE L : ON L

58 S-MUTE O SYSTEM MUTE L : ON L

59 NC O NOT USED L

60 DRF I CD FOCUS OK SIG. H : OK H

61~70 P16~7 O FL SEGMENT DRIVE –

71 VLOAD – VLOAD - 32V –

72~77 P6~P1 O FL SEGMENT DRIVE –

78~80 10~8G O FL GRID DRIVE –

D-W320V

CIRCUIT DESCRIPTION

1. System u-COM IC701 (MN1872423 KEN)

Pin description.

D-W320V COVER( 97.11.28 11:11 PM y[W 7

D-W320V

CIRCUIT DESCRIPTION

Pin No. Terminal Name I/O Function

1 VDA1 – ADC power supply

2 MICI I LPF input for Mic input

3 LPFO1 O LPF output for Mic input

4 VRA1 – ADC reference voltage

5 AIL I Line input (Lch)

6 LPFO2 O Not used

7 VRA2 – ADC reference voltage

8 AIR I Line input (Rch)

9 LPFO3 O Not used

10 GNDA1 – ADC ground

11 LI I Lch analog add input

12 LZ O Not used

13 GNDA2 – DAC ground

14 AOL O DAC output (Lch)

15 VR2 – DAC reference voltage

16 AOR O DAC out put (Rch)

17 VDA2 – DAC power SUPPLY

18 RZ O Not used

19 RI I Rch analog add input

20 VDX – X-TAL power supply

21 XI I X-TAL in (16.9344 MHz)

22 XO O X-TAL out

23 GNDX – Ground

24, 25 VDD1, CKS – Digital power supply

26 MCK2 O Not used

27 MCK1 O Clock output

28~30 SDO/BCKO/LRCKO – Not used

31 SDI I Digital audio data input

32 BCKI – Bit clock input

33 LRCKI – Channel clock input

34 GNDD – Digital ground

35 RESET I Reset

36 IFD I U-com I/F data input

37 IFS I U-com I/F data shift clock input

38 IFL I U-com I/F latch pulse input

39 EMP I DE-emphasis setting (H = DE-emphasis filter on)

40 EXTO O Not used

41~43 TEST/VDD2/VDL – Digital power supply

44 GNDL – Digital ground for DRAM

2. KARAOKE IC/DAC IC 201 (TC9409 BF)

Pin description

D-W320V 1P( 97.11.28 11:20 PM y[W 2

D-W320V

CIRCUIT DESCRIPTUON

No Terminal I/O Specification

1 A+3.3V – +3.3V power supply for analog video

2 CVOUT O Composite video output

3, 4 N/C O Not used

5.6 VGND – Analog video ground

7 R+5V – Digital +5V power supply

8, 9 D+3.3V – Digital +3.3V power supply

10, 11 DGND – Digital ground

12 CD CLK I Audio external frequency clock (384 FS)

13 EMPH O Audio emphasis output (High Active)

14 DILRCK O Audio left right clock

15 HRDY – Host data ready

16 DISCK O Audio bit clock

17 DIDATA O Audio data serial bus

18 HINT O Host interrupt

19 N/C O Not used

20 VRST I Hardware reset (Low Active)

21 HCK I Host clock

22 HDIO I/O Host serial data bus

23 CDSCK I CD bit clock

24 CDDATA I CD data input

25 CDLRCK I CD left right clock input

26 IPFLG I CD data error flag (C2P0)

27 HSEL I Host address / data select

28~30 DATA/SFSY/SBSY I Not used

3. Connection terminal (CN P401) specification for MPEG board

4. MPEG board block diagram

R+5V DGND R+5V DGND

R+5V

DGND AGND

2MDRAM

CD I/F

Subcode I/F

Host I/F

D+3.3V A+3.3V

S Video Out

Video Out

Audio Out

4MDRAM

1chip

MPEG

Decoder LPF

D-W320V 1P( 97.11.28 11:20 PM y[W 1

D-W320V

A/D VOLTAGE 1.9 V 2.45 V 3.10 V 3.64 V

PIN No.PIN NAME

26 ANI2 PLAY STOP DIGEST

27 ANI1 FLAT AUTO PAUSE ECHO UP ECHO DOWN

28 ANI0 DISC2 DISC1 REPEAT RANDOM

CIRCUIT DESCRIPTION

6. CD CHANGER CONTROL FUNCTION

6-1 Mechanism Control I/O Port

6-1-1 Input Port

TRSW1 and TRSW2 will detect mechanism operation mode.

Refer to 5. I/O port UPSW detects tray position in tray 1 or 2

mode. L : UPSW = on, H : UPSW = off

6-1-2 Output Port

TR+, TR- and SP CONT control evry motor in the mecha-

nism. Refer to 5. I/O port

6-2 Mechanism Control Specifications

6-2-1 Motor Operation vs Output Port

6-2-2 Brake Operation Specifications

Brake works before motor will change turning direction.

Brake period is 500msec.

6-2-3 Initial Operation

Mechanism will fix to model 1 or 2 when turn on after hard

reset mode.

1) Pickup will travel inwards

2) Mechanism will select turning direction of motor and model

1 or 2.

In power on / standby operation, mechanism will select

model 1 to mode 4 so it will not have initial operation.

6-2-4 Mechanism error Message

Error message will erase when power is off (standby).

detect sw wait period condition error no.

PU IN 4 sec only initial operation 4

TRSW1M 8 sec in tray open mode, TRSW1

TRSW2M or will not have 2.5voltage (M) 1

UPSW 8 sec in mechanism initial mode,

UPSW will not sense voltage 2

TRSW1L 8 sec in changing disc, TRSW1 or

TRSE2L TRSW2 will not have 3

Ovoltage (L)

TR+ TR-

Normal turn H L

Reverse turn L H

Stop H H

Brake H H

A/D VOLTAGE 0V 2.5V 5.0V

TRSW2 (PIN24) CLOSE OPEN OFF

TRSW (PIN25) CLOSE OPEN OFF

SYMBOL L M H

5-1 A / D input port key table

Pin No. : IC701(MN 1872423KEN)

A/D VOLTAGE 0 V 0.65 V 1.23 V

PIN No. PIN NAME

26 ANI2 TRAY1 O/C TRAY2 O/C ON/STANDBY

27 ANI1 KARAOKE SHARP NATURAL

28 ANI0 FF REV –

INPUT OUTPUT

TR+ (PIN 1) TR- (PIN9) OUT (PIN7) OUT2 (PIN3) OPERATION

L L OPEN OPEN STOP

H L H L TRAY1OPEN

L H L H TRAY2 OPEN

H H L L BREAK

PIN49 H L

SPEED HIGH LOW

PIN No. PORT NAME T. NAME FUNCTION

24 ANI4 TRSW2 TRAY1 POSITION DETECT

25 ANI3 TRSW1 TRAY2 POSITION DETECT

5-2 Motor driver I/O condition

IC4 (TA7291S)

5-4 CD changer I/O

IC701

5-5 TRSW A/D data

IC 701

5-3 Motor speed control

IC701(MN1872423KEN)

5. Input / Output port

D-W320V 1P( 97.11.28 11:20 PM y[W 4

D-W320V

CIRCUIT DESCRIPTION

6-3 mechanism operation.

MODE4 MODE7 MODE2 MODE6 MODE1 MODE5 MODE3

MODE5

MODE1

MODE6

MODE2

MODE7

MODE4 MODE5

DISC1 DISC2 PICK UP

TRSW1

TRSW2

UP SW

Turning direction

of motor from

initial start

not initialize not initialize

TOP view

normal turn

MOTOR turning

direction Reverse turn

INITIAL : Initialization is finished when mechanism stops in mode 1 or 2.

In initialized mode, mechanism will be in low speed mode.

D-W320V 1P( 97.11.28 11:20 PM y[W 3

D-W320V

CIRCUIT DESCRIPTION

STOP key enable

If key in STOP,

return to start

stage.

START

Display [01 00 00]

Tray open/close enable (display no change)

For move Pick-up, FWD and REV key enable only stop mode

Key in PLAY

Laser ON , Display [Ld on]

Key in Play

Focus ON, Display [FS on]

Key in PLAY

PLAY (Track servo OFF) Display [Sb OFF]

Key in PLAY

Play (Track servo ON)

Key in STOP

STOP

WITH

✻WITH TIME DISPLAY

7. Test mode

✻ TIME DISPLAY

Setting the test mode

: While pressing the AUTO PAUSE, press the ON/STAND BY Key.

Test mode will be cancelled by pressing the

ON/STANDBY key in the stop mode.

D-W320V 1P( 97.11.28 11:21 PM y[W 6

D-W320V

ADJUSTMENT

CD section

Since this CD system incorporates the following automatic

adjustment function, when the pickup is replaced, it is not neces-

sary to readjust it

Since this CD unit does not need adjustment, the combination

of PWB and laser pickup unit is not restricted.

•Automatic adjustment item

1. Focus offset(Fig.1)

2. Tracking offset(Fig.2)

3. E/F balance (Tracking error balance) (Fig.3)

4. RF level AGC function (HF level : constant)

5. RF level automatic follow-up of the tracking gain

This automatic adjustment is performed each time a disc is

changed. Therefore, each disc is played back using the optimal

settings

T/O

Pin 15 of IC1 T/E BALANCE

Pin 7 of IC1

F/O

Pin 16 of IC1 R5

CNP1

R13

R15

Fig .4 Checking points

D-W320V 1P( 97.11.28 11:21 PM y[W 5

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