Onkyo DX 706 Service Manual

Page 1

I'o

REF. NO. 3410

ONKYOG SERVICE MANUAL

COMPACT DISC PLAYER
MODEL DX-706/MODEL DX-708

Black and Silver models
UDN, UD 120V AC, 60 Hz
UP 230V AC, SOHz
UW 120/220V AC, 50/60Hz
UQA 240V AC, 50 Hz

SAFETY-RELATED COMPONENT WARNING! I

COMPONENTS IDENTIFIED BY MARK A ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL POR 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 EXPOSEDPARTS
ARE ACCEPTABLY INSULATED FROM THE SUPPLY

CIRCUIT BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER.

N KYO
AIIIIIII BflMPIININIS

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X-706/708

SPECIFICATIONS

Signal readout system:
Reading rotation:
Linear velocity:

Error correction system:
D/A converter:
Sampling frequency:
Number of channels:
Frequency response:

Total harmonic distortion:

Dynamic range:
Signal to noise ratio:
Channel separation:
Wow and Flutter:

Model DX-706

Optical non~contact

About 500-200 r.pim. (constant linear velocity)
1.24 .4m/5

Cross interleave Reed Solomon code

I BIT PWM X 2 AccuPulse Ouartz System
352.8kHz (eight-times oversampling)

2 (stereo)

2 Hz-20kHz

0.002004 (atl kHz)

100dB

(MB

MIME (all kHz)

Below threshold of measurability

DX-708

Optical non-contact

About 500-200 r.p.m. (constant linear velocity)
1.2-1.4m/s

Cross interleave Reed Solomon code

1 BIT PWM X 2 AccuPulse Quartz System
352.8kHZ (eight-times oversampling)

2 (stereo)

2 Hz~20kHz

0,0020% (atl kHz)

lOOdB

llOdB

llOdB (atl kHz)

Below threshold of measurebility

Output level: 2 volts r.m.s. 2 volts r.m.s.
Power consumption: 21 watts 21 watts
Dimensions (WXHXD): 445Xl30X364mm 455Xl3OX364mm
17-15/16" X 54/8" X 14-5/16' l7-l5/lfi" X 5-1/8" X 14-5/16"
Weight: 8kg, 17.6 lbs. 8.8kg,19.4lbst

Specifications and external appearance are subject to change without notice because of product improvements.

SERVICE PROCEDURES

1. How to Release the Transport Lock

To protect the optical assembly including the laser pickup

from vibration related damage during shipping, this unit is

equipped with a transport lock lever located on the base.

1. Loosen the screw with Phillips screwdriver.

2 Move the lock lever in the direction opposite that shown
by the arrow. Move the lever up to the position where
it can move no farther, and then remove the lever.

I Tighten the screw to secure the lock lever.
I For shipping, restore the lock lever to its position in
the direction of the arrow, then tighten down the
screw to secure the lock lever in that position.

Phillips screwdriver

Loy

Cir
Lock lever

2. Use of batteries

0 The remote control transmitter is powered by two
batteries. Before using this unit for the first time,
insert the two batteries (included).

0 Average battery life is about one year. This period
may be shorter depending on the frequency of use
and environment (temperature and humidity) in
which the remote control transmitter is used.

0 If the remote control transmitter does not operate
even though front panel controls function normally,
the batteries should be replaced. Use only listed in
the following chart.

Type Voltage Site

AA

M35" 1 .5v R6
UM- 3

3. Safety check out

After correcting the original service problem, perform
the following safety check before releasing the set to
the customer:

Connect the insulating-resistance tester between the
plug of power supply cable and chassis.

Specifications: more than 10Mohm at 500V.

4. Voltage selector (rear panel)

Worldwide models are equipped with a voltage selec-
tor to conform with local power supplies.Be sure to
set this selector to match the voltage of the power
supply in your area before turning the power switch
on. Voltage is changed by turning the voltage selector
with a screwdriver or similar instrument to the 120V
or 220V position. Confirm that the selector has been
set to the correct position before turing the power
switch on. If there is no voltage selector switch on the
unit you have purchased, it can only be used in areas
where the power supply voltage is the same as that of
the unit.