Gateway CPD-EG300 User manual

— 1 —

CPD-EG300

SPECIFICATIONS

D-1H

Picture tube

Video image area

Resolution

Standard image area

0.25 mm aperture grill pitch

17 inches measured diagonally

90-degree deflection

(16" maximum viewing image)

Approx. 327 x 243 mm (w/h)

(12

7/8

x 9

5/8

inches)

Horizontal: Max. 1600 dots

Vertical: Max. 1200 lines

Approx. 312 x 234 mm (w/h)

(12

3/8

x 9

1/4

inches)

Deflection frequency

AC input voltage / current

Dimensions

Mass

CHASSIS

Horizontal: 31.0 to 85 KHz

Vertical: 50 to120 Hz

100 to 120 V, 50/60 Hz, 1.8 A

220 to 240V, 50/60Hz, 1A

406 x 432 x 420 mm (w/h/d)

(16 x 17

1/8

x 16

5/8

inches)

Approx. 18.0 kg (39 lb 11 oz)

SERVICE MANUAL

Design and specifications are subject to change without notice.

CPD-EG300

VIDEO DISPLAY

CPD-EG300

US Model

Canadian Model

AEP Model

S. Hemisphere Model

Chassis No. SCC-L07J-A

— 2 —

CPD-EG300

POWER SAVING FUNCTION

This monitor is equipped with a power saving function. It goes

into power-saving mode if either of the following conditions

exist:

If either the horizontal sync or vertical sync are not present,

themonitorgoesintosuspendmode.Suspendmodemeans

that the power-saving level is substantial, yet the monitor

recovers relatively fast when you press a key or touch the

mouse.

If both horizontal sync and vertical sync are not present, the

monitor goes into active-off mode. Active-off mode means

that the power-saving level is almost at the level of being

shut off, and the monitor takes several seconds to recover

when you press a key or touch the mouse.

NOTE:

TIMING SPECIFICATION

The Power Saving function automatically

places the monitor into active-off state if

you turn on the power switch and leave the

rest of the system off. However, once the

monitor can sense the horizontal and verti-

cal syncs, it automatically returns to its nor-

mal operation state.

State Power Used Resume Time Power Indicator Power Saving Indicator

1 Normal 100% none green LED on off

2 Suspend approx. 10% approx. 3 sec. green LED on orange LED on

3 Active-off approx. 7% approx. 10 sec. off orange LED on

MODE 12345 6 7

Primary Mode

8910

Resolution (H x V) 640x480 640X480 720X400 800x600 800x600 1024x768 1024x768 1280x1024 1600x1200 1600x1200

Dot Clock (MHz) 25.175 36.000 28.322 40.000 56.250 65.000 94.500 135.000 158.400 173.000

HORIZONTAL

Hor. Freq. (kHz) 31.469 43.269 31.469 37.879 53.674 48.363 68.677 79.976 75.000 81.913

H-Total 31.778 23.111 31.777 26.400 18.631 20.677 14.561 12.504 13.333 12.208

H-Blanking 6.356 5.333 6.355 6.400 4.409 4.923 3.725 3.022 3.232 2.960

H-Front Porch 0.636 1.556 0.636 1.000 0.569 0.369 0.508 0.119 0.404 0.370

H-Sync. 3.813 1.556 3.813 3.200 1.138 2.092 1.016 1.067 1.212 1.110

H-Back Porch 1.907 2.222 1.907 2.200 2.702 2.462 2.201 1.837 1.616 1.480

H-Active

(

sec

)

25.422 17.778 25.422 20.000 14.222 15.754 10.836 9.481 10.101 9.249

VERTICAL

Ver. Freq. (Hz) 59.940 85.008 70.087 60.317 85.061 60.004 84.997 75.025 60.000 65.530

V-Total 525 509 449 628 631 806 808 1066 1250 1250

V- Blanking 45 29 49 28 31 38 40 42 50 5 0

V-Front Porch 10 1 12 1 1 3 1 1 1 1

V-Sync. 23243 6 3 3 3 3

V- Back Porch 3 3 2 5 3 5 2 3 2 7 2 9 3 6 3 8 4 6 4 6

V-Active (lines) 480 480 400 600 600 768 768 1024 1200 1200

SYNC.

Int

(

)

NO NO NO NO NO NO NO NO NO NO

Ext

(

H/V

)

/Polarit

YES -/- YES -/- YES -/+ YES +/+ YES +/+ YES -/- YES +/+ YES +/+ YES +/+ YES +/+

Ext

(

)

/Polarit

NO NO NO NO NO NO NO NO NO NO

Int/Non Int Non Int Non Int Non Int Non Int Non Int Non Int Non Int Non Int Non Int Non Int

— 3 —

CPD-EG300

1.5 k

0.15 µF AC

Voltmeter

(0.75 V)

To Exposed Metal

Parts on Set

Earth Ground

SAFETY CHECK-OUT

(US Model only)

After correcting the original service problem, perform

the following safety checks before releasing the set to the

customer:

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground

and from all exposed metal parts to any exposed metal part having

a return to chassis, must not exceed 0.5 mA (500 microampere).

Leakage current can be measured by any one of three methods.

WARNING!!

NEVERTURN ON THE POWER IN A CONDITION IN WHICH THE

DEGAUSS COIL HAS BEEN REMOVED.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY SHADING AND MARK ¡ON

THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE

PARTS LIST ARE CRITICAL FOR SAFE OPERATION. REPLACE

THESE COMPONENTS WITH SONY PARTS WHOSE PART

NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN

SUPPLEMENTS PUBLISHED BY SONY.CIRCUIT ADJUSTMENTS

THAT ARE CRITICAL FOR SAFE OPERATION ARE IDENTIFIED

IN THIS MANUAL. FOLLOW THESE PROCEDURES WHENEVER

CRITICAL COMPONENTS ARE REPLACED OR IMPROPER

OPERATION IS SUSPECTED.

AVERTISSEMENT!!

NE JAMAIS METTRE SOUS TENSION QUAND LA BOBINE DE

DEMAGNETISATION EST ENLEVEE.

ATTENTION AUX COMPOSANTS RELATIFS A LA

SECURITE!!

LES COMPOSANTS IDENTIFIES PAR UNETRAME ET PAR UNE

MARQUE

SUR LES SCHEMAS DE PRINCIPE, LES VUES

EXPLOSEES ET LES LISTES DE PIECES SONT D'UNE

IMPORTANCE CRITIQUE POUR LA SECURITE DU

FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES

COMPOSANTS SONY DONT LE NUMERO DE PIECE EST

INDIQUEDANSLEPRESENT MANUEL OU DANS DES SUPPLE-

MENTS PUBLIES PAR SONY. LES REGLAGES DE CIRCUIT

DONT L'IMPORTANCE EST CRITIQUE POUR LA

SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS

LE PRESENT MANUEL.SUIVRE CES PROCEDURES LORS DE

CHAQUE REMPLACEMENT DE COMPOSANTS CRITIQUES, OU

LORSQU'UN MAUVAIS FONTIONNEMENT SUSPECTE

1. Check the area of your repair for unsoldered or

poorly-soldered connections. Check the entire board

surface for solder splashes and bridges.

2. Check the interboard wiring to ensure that no wires

are “pinched” or contact high-wattage resistors.

3. Check that all control knobs, shields, covers, ground

straps, and mounting hardware have been replaced.

Be absolutely certain that you have replaced all the

insulators.

4. Look for unauthorized replacement parts,

particularly transistors, that were installed during

a previous repair. Point them out to the customer

and recommend their replacement.

5. Look for parts which, though functioning, show

obvious signs of deterioration. Point them out to

the customer and recommend their replacement.

6. Check the line cords for cracks and abrasion.

Recommend the replacement of any such line cord

to the customer.

7. Check the B+ and HV to see if they are specified

values. Make sure your instruments are accurate;

be suspicious of your HV meter if sets always have

low HV.

8. Check the antenna terminals, metal trim,

“metallized" knobs, screws, and all other exposed

metal parts for AC Leakage. Check leakage as

described below.

1. A commercial leakage tester, such as the Simpson 229 or

RCA WT-540A. Follow the manufacturers' instructions to

use these instructions.

2. A battery-operated AC milliammeter. The Data Precision

245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of

a VOM or battery-operated AC voltmeter. The "limit"

indication is 0.75 V, so analog meters must have an accurate

low voltage scale. The Simpson's 250 and Sanwa

SH-63Trd are examples of passive VOMs that are suitable.

Nearly all battery operated digital multimeters that have a

2V AC range are suitable. (See Fig. A)

— 4 —

CPD-EG300

TABLE OF CONTENTS

Section Title Page

1. GENERAL................................................................................... 5

2. DISASSEMBLY

2-1. Cabinet Removal ............................................................9

2-2. Service Position .............................................................. 9

2-3. D and A Board Removal................................................ 9

2-4. Picture Tube Removal ................................................... 10

3. SAFETY RELATED ADJUSTMENT.................................11

4. ADJUSTMENTS ........................................................................12

5. DIAGRAMS

5-1. Block Diagram ................................................................15

5-2. Circuit Boards Location ................................................. 18

5-3. Schematic Diagrams and Printed Wiring Boards ...... 18

1. D Board - Schematic Diagram .................................19

2. A Board - Schematic Diagram ................................. 23

5-4. Semiconductors ..............................................................27

6. EXPLODED VIEWS

6-1. Chassis ........................................................................... 29

6-2. Packing Materials .......................................................... 30

7. ELECTRICAL PARTS LIST................................................ 31

— 5 —

CPD-EG300

SECTION 1

GENERAL

The instructions given here are partial abstracts from the Operating Instruction Manual. The page numbers shown reflect those of the Operating Instruction Manual.

Connecting the Monitor 11

To set up the VX700:

12 VX700 User’s Guide

To use your VX700:

Operating the Monitor 13

— 6 —

CPD-EG300

Operating the Monitor 15

16 VX700 User’s Guide

14 VX700 User’s Guide

— 7 —

CPD-EG300

22 VX700 User’s Guide

◆

Troubleshooting 23

To set the monitor type:

Safe mode

Start Settings Control Panel

Display

Settings

Advanced Properties

Monitor

Change...

Plug and Play monitor (VESA DDC)

10.

Operating the Monitor 17

— 8 —

CPD-EG300

26 VX700 User’s Guide

◆

Troubleshooting 27

24 VX700 User’s Guide

◆

Troubleshooting 25

— 9 —

CPD-EG300

2-3. D and A BOARD REMOVAL

2-1. CABINET REMOVAL 2-2. SERVICE POSITION

SECTION 2

DISASSEMBLY

A board

D board

Cabinet

Two screws

(BVTP 4 x 16)

Two claws

PUSH

Cable bracket

Cable stopper

Five screws

(BVTP 3 x 12)

D board

One screw

(BVTT 4 x 8)

A board

Two screws

(BVTP 3 x 12)

D1 board

— 10 —

CPD-EG300

2-4. PICTURETUBE REMOVAL

Turn up one side of the rubber cap in

the direction indicated by arrow . When one side of the rubber cap sepa-

rates from the anode button, the anode-

cap can be removed by turning the rub-

ber cap and pulling it in the direction of

arrow .

Use your thumb to pull the rubber cap

firmly in the direction indicated by

arrow .

HOWTO HANDLE AN ANODE-CAP

REMOVAL OFTHE ANODE-CAP

NOTE: Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or carbon painted on the CRT, after

removing the anode.

REMOVAL PROCEDURES

Do not use sharp objects which may cause damage to the surface

of the anode-cap.

Do not squeeze the rubber covering too hard to avoid damaging

the anode-cap. A material fitting called a shatter-hook terminal is

built into the rubber.

Do not force turn the foot of the rubber cover. This may cause the

shatter-hook terminal to protrude and damage the rubber.

Demagnetization coil

Tension spring

Stand assy

(D board)

A board

Neck assy

Deflection yoke

Four screws

(Tapping screw 5)

Anode cap

Cushion

Picture tube shield

Two screws

(BVTP 4 x 16)

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