Onkyo DX 220 Service Manual

Page 1

DX-22O

SERIAL NO. 3242

ON'KYOE SERVICE MANUAL

COMPACT DISC PLAYER
MODEL DX-220

Black and Silver models

BUDN, BUD

120V AC, 60Hz

BUG, UG

220v AC, SOHZ

BUW, BUWX, UW

120/220V AC, 50/60HZ

_ BUQA, BUQB

240V AC, SOHZ

SAFETY-RELATED COMPONENT WARNINGII

COMPONENTS IDENTIFIED BY MARK A ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO PARTS
WHOSE, PARTS NUMBERS APPEAR AS SHOWN IN THIS
MANUAL

MAKE LEAKAGE-CURRENT OR RESISTANCE MEA-
SUREMENTS TO DETERMINE THAT EXPOSED PARTS
ARE ACCEPTABLY INSULATED FROM THE SUPPLY
CIRCUIT BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER

IONKYO I
IAIIIIIII BflMPIININISI

SPECIFICATIONS

Signal readout system: Optical non-contact

Reading rotation: About 500~200 r.pm.
(constant linear velocity)

Linear velocity: 1l2~1.4m/s

Cross interleave readsolomon code
16 bits linear
882kHz (two»times oversampling)

Error correction system:
Decoded bits:
Sampling frequency:

Number of channels: 2 (Stereo)
Frequency response: 5Hz~20kHz
Total harmonic distortion:0.004% (at lkHz)
Dynamic range: 93dB

Signal to noise ratio: 96dB

Channel separation:
Wow and Flutter:

90dB (at lkHz)
Below threshold of measurability

Power comsumption: 12 watts
Output level: 2 volts r.m.sl
Dimensions (W x H x D): 435 x 88 x 357mm
17-1/8" x 3-7/16" x14-1/16"
Weight: 4.8kg, 10.61135.

Specifications are subject to change without notice

Page 2

DX-ZZO

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING

This set employs a laserr Therefore, be sure to follow
carefully the instructions below when servicing.

WARNING

WHEN SERVICING, DO NOT APPROACH THE LASER
EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS
NECESSARY TO CONFIRM LASER BEAM EMMISION,
BE SURE TO OBSERVE FROM A DISTANCE OF MORE
THAN 30cm FROM THE SURFACE OF THE OBJECTIVE
LENS ON THE OPTICAL PICK-UP BLOCK.

LASER WARNING LABELS

The labels shown below are affixedv

I . Warning labels

120V model

Laer Diode Properties

0 Material: GaAS/GaAlAs

O Wavelength: 780nm

0 Emission Duration: continuous

0 Laser output: max. 0.4mW*
*Thls output is the value measured at a distance
about 1.8mm from the objective lens surface
on the Optical Pick-up Block.

DANGER - INVISIBLE LASER RADIATION
WHEN OPEN AND INTERLOCK FAILED on
DEFEATED. AVOID DIRECT EXPOSURE TO
BEAM.

CAUTION -HAZARDous LASER AND
ELECTROMAGBETIC RADIATION WHEN
OPEN AND INTEHLOCK DEFEATED.

ATTENTION - RAYONNEMENT
LASER ET ELECTROMAGNETIDUE
DANGEREUX SI OUVERT AVEC L'ENCLEN-
CHEMENT DE SECURITE ANNULE.

Photo 1

Photo 2

ADVARSEL: USYNLIG LASERSTRALING
VED ABNING, NAR SIKKERHEDSAF-
BRYDER ER UDE AF FUNKTION.
UNDGA UDSIETTELSE FOR STRALING

Page 13

Pin No. Designation Function

34 FZC Use when the focus search. Same as above.

35 FCS Signal input terminal to pull the focus.

36 FOF Attenuator terminal.

37 CFC Terminal to make the ramp waveform of focus search ramp circuit.
38~39 FDi, FDo Input/output teminals of focus drive amplifier.
40~42 DM+, DMi, DMo Input/output terminals of disc drive amplifier.

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