Onkyo DXC 510 Service Manual

Page 1

DX-C51O

REF. NO. 3374
ONKYO@ SERVICE MANUAL
UD, UDN 7 120v ACVIOUHZ 7
I UU 1|(l/120/220/240V AC, 50/60Hz
SAFETY-RELATED COMPONENT WARNINGIY
SPECIFICATIONS
COMPONENTS IDENTIFIED BY MARK A ON THE . _
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE Signal readnuI system: Optical non-contact
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. cum"g WW": About 500720" '41-?
REPLACE THESE COMPONENTS WITH ONKYO PARTS _ _ (mam ""an VFIOCIY)
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS W HWY: 1-244
MANUAL. Error CorrCCIIon syslcm: Cross interleave readsolumon code
Decoded bits: I8 hits linear
MAKE LEAKAGE-CURRENT OR RESISTANCE MEA- Sampling frequency: 352.8kHz (eight-times oversampling)
SUREMENTS TO DETERMINE THAT EXPOSED PARTS Numb 0 channchi 3 (Wm)
ARE ACCEPTABLY INSULATED FROM THE SUPPLY Frequency miponéei _ PM?
CIRCUIT BEFORE RETURNING THE APPLIANCE TO Tonal harmonic dIsmmon: 0.004% (at lkHz)
THE CUSTOMER. Dynamic range: 98dB
Signal to noise ralio: lOSdB
Channel separation: lUOdB (at lkI-Iz)
Wow and Fluller: Below Ihrcshuld of measurabilily
Power comsumption: 13 watts
Oulpul level: 2 VOIIS r.m.s.

Dimensions (Wx HXI)): 435x119><369mm
l7-1/8"X4-I1/16"> Weight: 6,5kgI 143 lbs.

Specifications are Subjccl to Change without notice.

ONKYoi
l Alllllfl BHMPIIIIHIIS

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DX-C510

TABLE OF CONTENTS

Specifications ...........
Service procedures .
Microprocessor descriptions ............
IC block diagram and descriptions
Adjustment procedures ................................... 1
Pc board View from bottom side
Main circuit
Headphone amplifier
Remocon sensor .
Power supply circutt
Display circuit .........
Schematic diagram .
Pc board-parts list ..
Mechanism-parts list ..........
Mechanism-exploded view
Exploded view
Parts list ...........
Waveform of each section
Block diagram ...............
Caution on replacement of pickup ..
Protection of eyes from laser beam
during servicing ..........................................
Laser warning lable
Packing View ............

SERVICE PROCEDURES

1. 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 lOMohm at 500V.

2. Voltage selector (rear panel)

Worldwide models are equipped with a voltage selector 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 110V. 120V. 220V or 240V position. Confirm that the
selector has been set to the correct position before turning
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 ofthe unit.

at AC 120V

at AC 110V at AC 220V at AC 240V

3. Procedures for replacement of flat packaged le
1. Tools to be used:
(1) Soldering iron . . .. Grounded soldering iron or
soldering iron with leak re-
sistance of 10 Mohms or

more.

Form of soldering irons tip:

(2) Magnifyingflm . i . for checking of finished
works
(3) 'lweem ........ for handling of 1C and

forming of leads
Countermeasure for electro-
static breakdown

(5) Nipper ......... for removing defective IC

(6) Small brush ...... for application of flux

(7) Enamel line

(4) Groundingring. . ..

2. Work Procedures:
(1) Remove the defective [C
Cut all leads of the defective IC one by one using
a nipper and remove the lC.
]. An enamel line has been pierced between the legs
of the flat package IC.
2. Use a soldering iron to unsolder the legs one at
a time.
3. Repeat the procedure of l and 2 above for the 3
sides only,

N

While holding the soldering against the enamel line,
pull in the direction of the arrow.

(2) Clean the pattern surface of the PC board.

Get rid of the remaining leads and solder.

Check and from the leads of the new flat pack-
aged lC to be installed.

From every lead on the new [C using a pair of
tweezers, so that all of them are aligned neatly
without being risen, twisted or inclined toward
one side. Especially the rising portion of every
lead must be formed with greatest care.

(Rising)

(3)

(Twisting) llnclining)