GDM-200PS.pdf

GDM-200PS/200PST/200PST9

SERVICE MANUAL

GDM-200PS

US Model

Canadian Model

SH Model

Chassis No. SCC-L11B-A

REVISED

GDM-200PST

AEP Model

UK Model

GDM-200PST9

AEP Model

Chassis No. SCC-L11C-A

CHASSIS

SPECIFICATIONS

Picture tube

0.25 mm aperture grille pitch

17 inches measured diagonally

90-degree deflection

Viewable image size

Approx. 327

243 mm (w/h)

9 5 / 8 inches)

16.0” viewing image

Resolution

Horizontal: Max. 1280 dots

Vertical: Max. 1024 lines

Standard image area

Approx. 312

234 mm (w/h)

(12 3 / 8

9 1 / 4 inches)

Approx. 293

234 mm (w/h)

(11 5 / 8

9 1 / 4 inches)

Deflection frequency

Horizontal: 30 to 92 kHz

Vertical: 48 to 160 Hz

AC input voltage/current

100 to 240 V, 50 – 60 Hz, 1.7 – 1.0 A

Power consumption

Max. 120 W

Dimensions

406

432

420 mm (w/h/d)

(16

17 1 / 8

16 5 / 8 inches)

Mass

Approx. 18.8 kg (41 lb 7 oz)

Supplied accessories

See page 6

Design and specifications are subject to change without notice.

TRINITRON ® COLOR GRAPHIC DISPLAY

MICROFILM

(12 7 / 8

GDM-200PS/200PST/200PST9

SAFETY CHECK-OUT

After correcting the original service problem, perform the

following safety checks before releasing the set to the customer:

1. Check the area of your repair for unsoldered or poorly-sol-

dered 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 tran-

sistors, 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.

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

VOM or battery-operated AC voltmeter. The “limit” indica-

tion is 0.75 V, so analog meters must have an accurate low-

voltage scale. The Simpson 250 and Sanwa SH-63Trd are

examples of a passive VOMs that are suitable. Nearly all

battery operated digital multimeters that have a 2 V AC

range are suitable. (See Fig. A)

WARNING!!

NEVER TURN ON THE POWER IN A CONDITION IN

WHICH THE DEGAUSS COIL HAS BEEN REMOVED.

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 ENLEVÉE.

To Exposed Metal

Parts on Set

Voltmeter

(0.75 V)

SONT CRITIQUES POUR LA

SÉCURITÉ. NE LES REMPLACER QUE PAR UNE PIÈCE

PORTANT LE NUMÉRO SPECIFIÉ. LES RÉGLAGES DE

CIRCUIT DONT L’IMPORTANCE EST CRITIQUE POUR

LA SÉCURITÉ DU FONCTIONNEMENT SONT

IDENTIFIÉS DANS LE PRÉSENT MANUEL. SUIVRE CES

PROCÉDURES LORS DE CHAQUE REMPLACEMENT DE

COMPOSANTS CRITIQUES, OU LORSQU’UN MAUVAIS

FONCTIONNEMENT EST SUSPECTÉ.

0.15 µF

1.5 k

Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

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 microamperes).

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

CAUTION ON DAS (ECS) CONNECTOR

The connector for DAS (ECS) adjustment is provided inside

the cover shown below. Be careful with an electrical shock

when connecting the connector with the power supplied. Also,

return the removed cover to the home position.

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

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

use these instruments.

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

245 digital multimeter is suitable for this job.

Left side

– 2 –

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY SHADING AND MARK

ATTENTION AUX COMPOSANTS RELATIFS À LA

SÉCURITÉ!!

LES COMPOSANTS IDENTIFIÉS PAR UNE TRAME ET

UNE MARQUE

GDM-200PS/200PST/200PST9

POWER SAVING FUNCTION

This monitor is capable of three states of reduced power consumption. By sensing the absence of video signals and one or both sync signals

coming from the host computer, it will reduce power consumption as follows.

Power consumption state

1 Normal operation

2 Standby (1st state)

3 Suspend (2nd state)

4 Active-off (3rd state)

5 Power-off

Power consumption

Recovery time

–

Approx. 1 sec.

Approx. 3 sec.

Approx. 15 sec.

–

u power indicator

Green on

Green and orange alternate

Orange on

Off

5 W

0 W

DIAGNOSIS

Failre

Power LED

+B failure

Amber

Off

(0.5 sec)

Horizontal / Vertical Deflection failure,

Thermal protector

ABL protector

Amber

Off

(1.5 sec)

(0.5 sec)

Amber

Off

(0.5 sec)

(1.5 sec)

HV failure

Amber

Off

Amber

Off

(0.25 sec)

(0.5 sec)

(0.25 sec)

(1.25 sec)

Off

(0.5 sec) (0.5 sec) (0.5 sec) (0.5 sec)

Aging Mode (Video Aging) : During Power Save, press “MENU” key for longer than 2 second.

Self Test (OSD Color Bar) : During Power Save, press “CONTRAST” + (>) key for longer than 2 second.

Reliability Check Mode

Amber

Off

Green

: During Power Save, press “CONTRAST”– (.) key for longer than 2 second.

TIMING SPECIFICATION

MODE AT PRODUCTION

MODE 1

MODE 2

RESOLUTION

1280 X 960 1280 X 1024

CLOCK

148.500 MHz 135.000 MHz

— HORIZON TAL —

H-FREQ

85.938 kHz 79.976 kHz

usec

H. TOTAL

11.636

12.504

H. BLK

3.017

3.022

H. FP

0.431

0.119

H. SYNC

1.077

1.067

H. BP

1.508

1.837

H. ACTIV

8.620

9.481

— VERTICAL —

V. FREQ(Hz)

85.002 Hz

75.025 Hz

lines

V. TOTAL

1011

1066

V. BLK

V. FP

V. SYNC

V. BP

V. ACTIV

960

1024

— SYNC —

INT(G)

EXT(H/V)/POLARITY

YES P/P

EXT(CS)/POLARITY

INT/NON INT

NON INT

97.7.14 VER.

– 3 –

120 W

£ 85 W

£ 15 W

Aging / Self Test

GDM-200PS/200PST/200PST9

TABLE OF CONTENTS

Section

Title

Page

1. GENERAL ................................................................... 1-1

2. DISASSEMBLY

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

2-2. A Board Removal ................................................. 2-1

2-3. AC Inlet and I/O Terminal Board Removal ........ 2-2

2-4. D Board Removal ................................................. 2-2

2-5. Service Position .................................................... 2-2

2-6. Picture Tube Removal .......................................... 2-3

3. SAFETY RELATED ADJUSTMENT ............. 3-1

4. ADJUSTMENTS ...................................................... 4-1

5. DIAGRAMS

5-1. Block Diagram

(with Frame Schematic Diagram) ........................ 5-1

5-2. Circuit Boards Location ....................................... 5-4

5-3. Schematic Diagrams and Printed Wiring Boards ... 5-4

(1) Schematic Diagram of D Board .......................... 5-5

(2) Schematic Diagram of A Board ........................ 5-13

5-4. Semiconductors ................................................. 5-16

6. EXPLODED VIEWS ............................................. 6-1

7. ELECTRICAL PARTS LIST ............................ 7-1

– 4 –

SECTION 1

GENERAL

The operating instructions mentioned here are partial abstracts

from the Operating Instruction Manual. The page numbers of

the Operating Instruction Manual remain as in the manual.

Getting Started

Customizing Your Monitor

Identifying Parts and Controls

Before adjusting

• Connect the monitor and the computer, and turn them on.

• Select “ LANG” in the MENU OSD, then select

“ENGLISH” (English) (see page 17).

Adjusting the Picture Contrast

See the pages in parentheses for further details.

Once the setting is adjusted, it will be stored in memory for

all input signals received.

1 Press the > (contrast) ? / / buttons.

The BRIGHTNESS/CONTRAST OSD appears.

Front

Rear

Adjusting the Picture Brightness

Once the setting is adjusted, it will be stored in memory for

all input signals received.

1 Press the ¬ (brightness) . / > buttons.

The BRIGHTNESS/CONTRAST OSD appears.

BRIGHTNESS/CONTRAST

26 26

80.0kHz/ 75Hz

RESET

ASC

HD15 BNC

INPUT

BRIGHTNESS/CONTRAST

Horizontal

Frequency*

Vertical

Frequency*

26 26

80.0kHz/ 75Hz

2 Press the >? / / buttons again to adjust the picture

contrast.

1 RESET (reset) button (page 17)

Resets the adjustments to the factory settings.

2 ASC (auto sizing and centering) button

(page 7)

Automatically adjusts the size and centering of the

images.

3 INPUT (input) button and HD15/BNC

indicators (page 8)

Selects the HD15 or 5BNC video input signal. Each time

you press this button, the input signal and

corresponding indicator alternate.

4 ¬ (brightness) ( . / > ) buttons (pages 8 –

17)

Adjust the picture brightness.

Function as the (./>) buttons when adjusting other

items.

5 MENU (menu) button (pages 8, 10 -17)

Displays the MENU OSD.

6 > (contrast) ( ? / / ) buttons (pages 8 – 17)

Adjust the contrast.

Function as the (?//) buttons when adjusting other

items.

7 u (power) switch and indicator (pages 19,

22)

Turns the monitor on or off.

The indicator lights up in green when the monitor is

turned on, and lights up in orange when the monitor is

in power saving mode.

8 AC IN connector

Provides AC power to the monitor.

9 Video input 1 connector (HD15)

Inputs RGB video signals (0.714 Vp-p, positive) and

SYNC signals.

Horizontal

Frequency*

Vertical

Frequency*

2 Press the ¬. / > buttons again to adjust the picture

brightness.

/ . . . for more contrast

? . . . for less contrast

The OSD automatically disappears after about 3 seconds.

5 4 3 2 1

> . . . for more brightness

. . . . for less brightness

To reset, press the RESET button while the OSD is on. The

brightness and contrast are both reset to the factory settings.

The OSD automatically disappears after about 3 seconds.

* The horizontal and vertical frequencies for the received input

signal appear in the BRIGHTNESS/CONTRAST OSD.

Pin No.

Signal

Red

Green

(Composite

Sync on Green)

Blue

Ground

DDC Ground*

Red Ground

Green Ground

Pin No.

Signal

Blue Ground

DDC + 5V*

Ground

Bi-Directional

Data (SDA)*

H. Sync

V. Sync

Data Clock(SCL)*

To reset, press the RESET button while the OSD is on. The

brightness and contrast are both reset to the factory settings.

* The horizontal and vertical frequencies for the received input

signal appear in the BRIGHTNESS/CONTRAST OSD.

* Display Data Channel (DDC) Standard of VESA

!¼ Video input 2 connector (5 BNC)

Inputs RGB video signals (0.714 Vp-p, positive) and

SYNC signals.

Getting Started

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: