Onkyo DVC-503 Service manual

SERVICE MANUAL

DVD Changer

MODEL DV-C503

DV-C503

Ref. No. 3704

102001

Black model

120V AC, 60HzBUDD

SAFETY-RELATED COMPONENT WARNING!!

THE MARK FOUND ON SOME COMPONENT PARTS INDICATES THE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. WHEN REPLACING, BE SURE TO USE PARTS OF IDENTICAL DESIGNATION. MAKE LEAKAGE-CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER.

RC-469DV

SPECIFICATIONS

DVD Changer

Power supply AC 120 V, 60 Hz Power consumption 20 W Weight 15.0 lbs External dimensions 17 Signal system NTSC Frequency range (digital audio) 48 kHz sampling 4 Hz to 22 kHz

Signal-to-noise ratio (digital audio) More than 98 dB Audio dynamic range (digital audio) More than 95 dB Harmonic distortion (digital audio) Less than 0.005 % Wow and flutter Below measurable level Operating conditions Temperature: 5 C to 35 C (41 F to 95 F), Operation status: Horizontal

Outputs

Video output 1.0 V (p-p), 75 ohm , negative sync., pin jack 1 S-video output (Y) 1.0 V (p-p), 75 ohm , negative sync.

Component video output (Y) 1.0 V (p-p), 75 ohm , negative sync., pin jack 1

Audio output (digital output Optical) Optical connecter 1 Audio output (digital output Coaxial) 0.5 V (p-p), 75 ohm , pin jack 1 Audio output (analog output) 2.0 V (rms), 320 ohm , pin jack (L, R) 2

1

/8" x 5 1/16" x 16 15/16" (W/H/D)

96 kHz sampling 4 Hz to 42 kHz

(C) 0.286 V (p-p), 75 ohm , Mini DIN 4-pin 1

(PB)/(PR) 0.7 V (p-p), 75 ohm , pin jack 2

DV-C503

Supplied Accessories

Audio/video connection cable 1 Remote controller (RC-469DV) 1 Batteries (size AAA/R3) 2

Specifications and features are subject to change without notice.

SERVICE NOTE

PRECAUTIONS

1. Ground for the work-desk. Place a conductive sheet such as a sheet of copper (with impedance lower than 10Mohm) on the work-desk and place the set on the conductive sheet so that the chassis.

2. Grounding for the test equipments and tools. Test equipments and toolings should be grounded in order that their ground level is the same the ground of the power source.

3. Grounding for the human body. Be sure to put on a wrist-strap for grounding whose other end is grounded. Be particularly careful when the workers wear synthetic fiber clothes, or air is dry.

4. Select a soldering iron that permits no leakage and have the tip of the iron well-grounded.

5. Do not check the laser diode terminals with the probe of a circuit tester or oscilloscope.

DV-C503

1. Replacing the fuses

This symbol located near the fuse indicates that the fuse used is show operating type, For continued protection against fire hazard, replace with same type fuse , For fuse rating, refer to the marking adjust to the symbol.

Ce symbole indique que le fusible utilise est e lent. Pour une protection permanente, n'utiliser que des fusibles de meme type. Ce demier est indique la qu le present symbol est apposre.

REF.NO.

F1

PART NO.

252159

DESCRIPTION

2A-UL/T-237

2. Safety-check out

(Only U.S.A. model) 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 cord and terminal GND on the back panel. Specifications: More than 10M ohm at 500V

LASER CAUTION

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instruction in the literature accompanying the appliance.

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN

WARNING :

OR MOISTURE. DANGEROUS HIGH VOLTAGES ARE PRESENT INSIDE THE ENCLOSURE. DO NOT OPEN THE CABINET. REFER SERVICING TO QUALIFIED PERSONNEL ONLY.

CAUTION :

TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT.

POUR EVITER LES CHOCS ELECTRIQUE, INTRODUIRE LA LAME LA PLUS LARGE DA LA FICHE DANS LA

ATTENTION :

BORNE CORRESPONDANTE DA LA PRISE ET POUSSER JUSQU' AU FOND.

Initialization of setup

1. Press the "DISC 4" and "CDPLAY" key to the same timing. The "DISC 4 key is pushed previously. Then, light off the FL tube.

2. Push the power switch.

EXPLODE VIEW CHASSIS

S6

H45 S3

S2

S1

S2

S1

H37

S3

DV-C503

H35

H34

S6

H2

H44

H4

H1

H3

S5

S2

H7

S4

H5

H8

H6

U2

H10

S2

S6

S2

S4

F1

S3

H38

S2

H46

H49

S2

H42

S1

S2

H22

H48

H24

H23

H53

H27

U1

S2

H26

H47

S2

H26

H42

H27

CC201

S2

H22

H26

S2

CC202

S2

H47

U3

S2

N01

C

S2

S3

H41

S6

H52

H47

S2

H43

H47

H21

42

S2

11

H47

H12

F

L

tu

b

e

S2

H47

S4

U2

H15

H14

S2

U2

S2

H20

S5

H13

DV-C503

PARTS LIST

CHASSIS

REF. NO. PART NO. DESCRIPTION

H1 55221110 Plate, DVD H2 55184480 Drawer panel H3 55221120 Clear plate H4 55186750 Badge Logo H5 55186710 Facet H6 55244650 Button, STANDBY H7 55244620 Knob, POWER H8 55184600 Shaft, power H10 55244670 Button, PLAY H12 55164930 FL holder H13 55184330 Front panel H14 55244660 Button, OPEN/CLOSE H15 55244680 Button, Keys (9-keys) H20 55236110 Front chassis

H21 55201610 Sponge, front bracket

H22 55125120 Foot (4)

H23 55196510 Sponge, chassis

H24 55174580 Bracket ground H26 55186640 Bracket main PC board H27 55178960 Spring H34 55011170 Power cord, 1830mm H35 55125180 Cord bushing H37 55186610 Rear panel H38 55174610 Bracket R small H41 55186600 Top cover H42 55141370 Rubber (4) H42 55127310 Washer foot H43 55184690 Power supply board unit H44 55221140 Shield cover H45 55186670 Bracket L, Frame H46 55186680 Bracket R, Frame H47 55174550 Cushion, 12 x 8 x 20 H48 55186620 Main chassis

H49 55190690 Rubber sheet

H52 55170390 Wire tie

H53 55190770 Sheet

REF. NO. PART NO. DESCRIPTION

S1 838130068 3TTB+6B, Self tapping screw S2 838130088 3TTB+8B, Self tapping screw S3 838130108 3TTB+10B(BC), Self tapping screw S4 831130088 3TTW+8B, Self tapping screw S6 838440088 4TTB+8B(BC), Self tapping screw U1 55183100 Main circuit PC board U2 55183110 Display PC board,

Open/Close SW PC board,

Standby LED PC board U3 55183120 Output terminal PC board F1

252159

NOTE: THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED.

2A-UL/T-237, Fuse

DV-C503

M18

20710180 GEAR

pp-6.max

M18

20710180

GEAR

pp-7.max

DV-C503

A

BLOCK DIAGRAM

1

AC120V, 60Hz

AC CORD

2

Power supply circuit

+5VS FL AC FL AC

-17V

+12V ANALOG Vcc +8V ANALOG Vcc

-8V ANALOG Vcc +5V DIGITAL Vcc +3.3V DIGITAL Vcc +8V MOTOR Vcc +12V MOTOR Vcc 5V DISPLAY

BCDE

FL tube

IR REMOCON

+5V6S

VFD STD

VFD DATA IN

IC201

ST15519

MPEG

VFD DATA OUT

VFD CLK

POWER CTL

PCM1748E-CS PCM1748E-CLK PCM1748E-DATA PCMCLK BCK LRCLK

AUDIO-MUTE

DAC

PCM1748E

IC802-A-A

BA4560

L. P. F

L AUDIO

R AUDIO

MUTE

L-CH MIXED

R-CH MIXED

F-OE(DRAM OE)

IC901

IC401

8MBIT

FLASH MEMORY

IC301

SDRAM-64MBIT

HY57V651610BTLC-8 125MHz

F-OE(DRAM OE) F-CE

ADDR* F-WE F-RESET F-DE DATA*

M29F400T-90N1

DATA* RDNOTWR D-RASOADDR* D-CAS1D-CAS1

Y-OUT

R(Cr)-OUT

B(Cb)-OUT

G(Y)-OUT

SPDIF

VIDEO-MUTE

74HC04

PIXCLK-27MHz

IC501

TR BUFFER & B.N.F.

BUFFER

CVBS-OUT

Y-OUT

C-OUT

R(Cr)-OUT

B(Cb)-OUT

G(Y)-OUT

COAXIAL

OPTICAL

S-VIDEO

CVBS-VIDEO

6

7

8 9

10

GND

JK804 RCA 3V

Cr

Cb

Y

CVBS-OUT

3

C-OUT

DVD Mechanism

Roulette Mechanism

4

EXIT-PSTART/ERROR EXIT-DATAVALID EXIT-DATA EXIT-BCLK +3V3-RESET IRQ2 F/E SCL F/E SDATA +3.3V DIGITAL Vcc +5V DIGITAL Vcc +12V MOTOR Vcc

SLIDER-OPEN/CLOSE (POWER-POSITION P1) SLIDER-IN (DRAWER-CCW-CTRL) SLIDER-OUT(DRAWER-CTRL)

EEPROM M24C02

IC202

SDA

SCL

DV-C503

A

SCHEMATIC DIAGRAM

1

Connection board

2

BCDEFGH

From Power supply unit

Display circuit PC board

GRID(00:11)

Standby LED PC board

3

4

Open/Close

PC board

5

DV-C503

A

SCHEMATIC DIAGRAM

Output terminal PC board

1

From Main PC board

2

BCDE

Audio output

Video output

From Main PC board

3

Component

4