Arcam DiVA CD73 Manual de usuario

SERVICE MANUAL

CD73

COMPACT DISC PLAYER

CONTENTS Page

SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

FRONT PANEL AND REAR PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

RF PATTERN TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9

PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-12

SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-18

IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19-24

TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26-31

MECHANISM EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

MECHANISM EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

CD73 COMPACT DISC PLAYER

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Disc Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . One Disc, 120 or 80 mm

Decoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WOLFSON Delta Sigma 24bit

Digital Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Times oversample

Analog Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 pole active

Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +/- 0.5 dB, 0.3Hz - 20kHz

THD (at 0 dB, 1kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.003%

Intermodulation Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . < - 100 dB

(19 + 20 kHz)

Dynamic Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 dB

Linearity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +/- 0.5 dB, 0 dB to -80 dB

Signal / Noise Ratio (A-Weight) . . . . . . . . . . . . . . . . . . . . . . . ≥100 dB, De-Emphasis on

≥100 dB, De-Emphasis off

Channel Separation 1kHz . . . . . . . . . . . . . . . . . . . . . . . . . . >90 dB

10 kHz . . . . . . . . . . . . . . . . . . . . . . . . >80 dB

Output Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 Ω

Output Level at 0 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 V rms

Digital Error Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IRC with double error correction in C1 and C2

Digital Code Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sony / Philips Serial data format

Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23W

CONTROLS

Load, Play / Pause, Stop, Track (< >), Scan (< >).

PHYSICAL SPECIFICATIONS

Dimensions 430 x 85 x 290 mm

(Width x Height x Depth)

Net weight 4.6 kg

Shipping weight 6.5 kg

SPECIFICATION

CD73 COMPACT DISC PLAYER

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1765432

12 3 45 67

FRONT PANEL & REAR PANEL

1. FRONT PANEL

2. REAR PANEL

1. POWER

2. LOAD

3. PLAY

4. STOP

5. PAUSE

6. SEARCH

7. SKIP TRACK

1. SOCKET FOR IEC POWER INLET LINE

2. VOLTAGE SELECTOR SWITCH

3. AUDIO OUTPUT SOCKETS

4. COAXIAL DIGITAL OUTPUT SOCKET

5. OPTICAL DIGITAL OUTPUT SOCKET

6. REMOTE IR INPUT

7. 12V TRIGGER INPUT

CD73 COMPACT DISC PLAYER

- 4 -

DISASSEMBLY INSTRUCTIONS

1. Remove machine screws M 4.0 x 6.0 ( 1 to 4 ) from the side panels.

Remove tapping screw 3.0 x 8.5 ( 5 )from the back panel.

Refer to Figure No.1.

Figure No.1

2. Pull both sides of the TOP COVER slightly outwards 6 and tilt approx. 35˚ and then remove

in the direction as indicated by the arrow 7 . Refer to Figure No.2.

Figure No.2.

CD73 COMPACT DISC PLAYER

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U701 M38B79FFFP

SYSTEM CONTROL CPU

& VFL DISPLAY DRIVER

Q407-Q410

MUTE

M401

RCA

JACK

6N135

OPO301

Q701

M301

IR_IN

M407

RCA JACK

DIGITAL

OUTPUT

M701

VFL DISPLAY

M304

TRIGGER IN

94 12

47 13

43 27

92 28

6231

35 48 3

97 98 99 52 88

1 3

6361

40 41

40 45 43

2 4

3 6

CD AUDIO

O/P

25 12 15

U201

LXD3017Q

DSP

U101

CX2581

RF AMP

RFAC

SETE

RFDC

SRDR

SFDR

FRDR

FFDR

TRDR

TFDR

SPDR

MOTOR

DISCO

DISW

LOADING MOTOR

LIMIT SWITCH

SPINDLE

MOTOR

SLED

MOTOR

PU-IN

LIMIT SWITCH

PICK

DISC

M702

REMOTE

SENSOR

CD MECHANISM UNIT

POWER

TRANSFORMER

AC POWER I / P

SK501

Q101

U401

WM8740E

U404 U403

U501,U502

DIGITAL

POWER

U507

DIGITAL

POWER

U504-U506

ANALOGUE

POWER

+8V +5V

+3.6V

+12V 5V

-12V

BR501

RECTIFIER

DIODES

BR502

RECTIFIER

DIODES

U503

REGULATOR

-30V

F1 F2

D505

RECTIFIER

DIODES

U407

74HCU04

INVERTER

GATE

M402

EMC FILTER

L406

DIGITAL COIL

M406

OPT JACK

DIGITAL

OUTPUT

TK501

Q310

RL501

RELAY

RL502

RELAY

Q312

Q103

426 27

1 2

12 13

16 17

U202

BA6392

KEYBOARD

SW702 SW703 SW708SW707

SW706LOAD

SW701 PAUSE

SW704 SW705

BLOCK DIAGRAM

CD73 COMPACT DISC PLAYER

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WIRING DIAGRAM

TRANSFORMER

AUDIO OUTPUT BOARD

MAIN BOARD

KEY BOARD

LED BOARD

M102

(16PIN)

AC INLET

SK501

M502

M105A

(6PIN)

CD MECHANISM

M101

(5PIN)

CD73 COMPACT DISC PLAYER

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RF PATTERN TESTING

ARCAM - CD73 PCB TESTING POINTS DIAGRAM

TESTING PROCEDURE

(1) Load the test disc (Sony Test CD YEDS-7) and set the unit into PLAY mode.

(2) Connect the scope to R227 (Pin 15 of U101) and DGND (R116).

Scope setting: Coupling : AC.

Vertical sensitivity : 0.2 V/ div.

Horizontal time base : 0.5 µS/div.

(3) Observe the waveform is 2.0V p-p +/-5% and the eye pattern is at its best shape (see FIG. 1).

FIG. 1 (a) FIG. 1 (b) Poor eye pattern

FIG. 1 (C) Good eye pattern

3T 4T 5T — 11T

CD73 COMPACT DISC PLAYER

- 8 -

INSTRUCTION FOR HANDLING OPTICAL SYSTEM BLOCK PICK-UP

Electrostatic breakdown of the laser diode in the optical system block may occur due to a potential difference caused

by electrostatic charge accumulated on clothing, human body, etc. A ground must be provided as follows to prevent

any electrostatic charge during unpacking or repair work.

1. Ground for Human Body

Be sure to wear a ground band (1M ohm) that is properly to remove any static electricity that may be charged on the

body.

2. Ground for Work Bench

Be sure to place a conductive sheet (1M ohm) or copper plate with proper grounding on the work bench or other sur-

face on which the pick-up is to be placed.

3. Because the static electricity charge on the clothing does not discharge through the body grounding band, do not

let clothing to get in contact with the pick-up unit.

INCORRECT CORRECT

NOTE: Laser diodes are so susceptible to damage from

static electricity that even if a static discharge does not

ruin the diode, it can shorten its life or cause it to work

improperly.

1.Grounding band

1M ohm

2.Conductive Sheet

or Copper Plate

IMPORTANT NOTES

SHOW THE SOFTWARE VERSION

Press " I< "(TRACK), " STOP ", " I< "(TRACK) will show the software version under STOP mode with disc inside. It

will return to normal after 2 seconds.

JUMPER SETTING BETWEEN CD73 & CD83

Location CD73 CD83

PL100 OPEN OPEN

PL202 OPEN SHORT

PL203 SHORT OPEN

PL204 OPEN SHORT

PL205 SHORT OPEN

PL300 1/2 SHORT 2/3 SHORT

PL400 SHORT OPEN

PL401 SHORT OPEN

PL402 SHORT OPEN

PL403 OPEN SHORT

CD73 COMPACT DISC PLAYER

- 9 -

PRECAUTIONS FOR CHECKING BEAM EMISSION

The laser beam of this unit is focused on the reflecting surface of the objective lens in the optical system block.

Therefore, keep your eyes at least 12 inches (30 cm) away from the objective lens when the laser diode is ON.

(Operation Check Method for Laser Diode and Focus Search Function.)

When the POWER switch is turned ON after the chucking plate is removed, observe the objective lens and confirm

that the following operations are performed properly.

(The optical system should be at the lead-in area position when it is checked at this time.)

(1) The laser should be at the innermost position after the chucking plate is removed.

(2) The diffused light of the laser beam can be seen when the POWER switch is turned ON.

(3) Vertical (up and down) movement of the objective lens (2 or 3 times) will take place.

PRECAUTIONS WHEN CHANGING LASER PICK-UP

When removing the pick-up assembly, short circuit

the PCB tracks on the optical block as show in the

drawing in order to protect the pick-up before

removal.

NOTE: Replacement pick-up assemblies are sup-

plied with the PCB pattern already protected.

DO NOT REMOVE THE SHORT CIRCUITS

UNTIL YOU HAVE FINISHED FITTING THE

PICK-UP.

Caution:

Laser diodes are extremely susceptible to damage

from static electricity. Even if a static discharge

does not ruin the diode, it can shorten its life or

cause it to work improperly. When replacing the

pick-up, use a conductive mat, a grounded solder-

ing iron, and so on, to protect the laser diode from

static damage.

Ground Conductive

Wrist Band for Body

Ground Line

Less than

10 ohm

Conductive Gum Mat

Soldering

Iron with

Ground

wire

Protective soldering place

for laser diode

CD73 COMPACT DISC PLAYER

- 10 -

PCB LAYOUT

KEY BOARD _ Component Side

KEY BOARD _ Solder Side

AUDIO OUTPUT BOARD

Component Side Solder Side

LED BOARD

Component Side Solder Side

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