Samsung SPT51A Bedienungsanleitung

PROJECTION TV RECEIVER

Chassis : SPT51A (VERSION1)

Model: SPM5288PF

SPM5288PTR

SPM4388PF

SPM4388PTR

PROJECTION TV RECEIVER CONTENTS

Precautions

Reference Information

Specifications

Disassembly and Reassembly

Alignment and Adjustment

Troubleshooting

Exploded View and Parts List

Areas and Option Specification

Electric Parts List

Block Diagrams

Wiring Diagram

Schematic Diagrams

10.

11.

ELECTRONICS

©Samsung Electronics Co., Ltd. SEP 1997

Printed in Korea

3SPT51A-8801

1-1Samsung Electronics

1. Precautions

1. Be sure that all of the built-in protective

devices are replaced. Restore any missing

protective shields.

2. When reinstalling the chassis and its

assemblies, be sure to restore all protective

devices, including: nonmetallic control

knobs and compartment covers.

3. Make sure that there are no cabinet

openings through which people--

particularly children--might insert fingers

and contact dangerous voltages. Such

openings include the spacing between the

picture tube and the cabinet mask,

excessively wide cabinet ventilation slots,

and improperly fitted back covers.

If the measured resistance is less than 1.0

megohm or greater than 5.2 megohms, an

abnormality exists that must be corrected

before the unit is returned to the customer.

4. Leakage Current Hot Check (Figure 1-1):

Warning: Do not use an isolation

transformer during this test. Use a leakage-

current tester or a metering system that

complies with American National Standards

Institute (ANSI C101.1, Leakage Current for

Appliances), and Underwriters Laboratories

(UL Publication UL1410, 59.7).

5. With the unit completely reassembled, plug

the AC line cord directly into the power

outlet. With the unit's AC switch first in the

ON position and then OFF, measure the

current between a known earth ground

(metal water pipe, conduit, etc.) and all

exposed metal parts, including: antennas,

handle brackets, metal cabinets, screwheads

and control shafts. The current measured

should not exceed 0.5 milliamp. Reverse the

power-plug prongs in the AC outlet and

repeat the test.

6. Antenna Cold Check:

With the unit's AC plug disconnected from

the AC source, connect an electrical jumper

across the two AC prongs. Connect one

lead of the ohmmeter to an AC prong.

Connect the other lead to the coaxial

connector.

7. X-ray Limits:

The picture tube is especially designed to

prohibit X-ray emissions. To ensure

continued X-ray protection, replace the

picture tube only with one that is the same

type as the original. Carefully reinstall the

picture tube shields and mounting

hardware; these also provide X-ray

protection.

8. High Voltage Limits:

High voltage must be measured each time

servicing is done on the B+, horizontal

deflection or high voltage circuits. Correct

operation of the X-ray protection circuits

must be reconfirmed whenever they are

serviced. (X-ray protection circuits also may

be called "horizontal disable" or "hold-

down".)

Heed the high voltage limits. These include

the X–ray Protection Specifications Label, and

the Product Safety and X-ray Warning Note on

the service data schematic.

1-1 Safety Precautions

Fig. 1-1 AC Leakage Test

Follow these safety, servicing and ESD precautions to prevent damage and protect against potential

hazards such as electrical shock and X-rays.

Precautions

1-2 Samsung Electronics

1-1 Safety Precautions (Continued)

15. Observe the original lead dress,

especially near the following areas:

Antenna wiring, sharp edges, and

especially the AC and high voltage power

supplies. Always inspect for pinched,

out-of-place, or frayed wiring. Do not

change the spacing between components

and the printed circuit board. Check the

AC power cord for damage. Make sure

that leads and components do not touch

thermally hot parts.

16. Picture Tube Implosion Warning:

The picture tube in this receiver employs

"integral implosion" protection. To

ensure continued implosion protection,

make sure that the replacement picture

tube is the same as the original.

17. Do not remove, install or handle the

picture tube without first putting on

shatterproof goggles equipped with side

shields. Never handle the picture tube by

its neck. Some "in-line" picture tubes are

equipped with a permanently attached

deflection yoke; do not try to remove

such "permanently attached" yokes from

the picture tube.

18. Product Safety Notice:

Some electrical and mechanical parts

have special safety-related characteristics

which might not be obvious from visual

inspection. These safety features and the

protection they give might be lost if the

replacement component differs from the

original--even if the replacement is rated

for higher voltage, wattage, etc.

Components that are critical for safety are

indicated in the circuit diagram by

shading, ( ) or ( ).

Use replacement components that have

the same ratings, especially for flame

resistance and dielectric strength

specifications. A replacement part that

does not have the same safety

characteristics as the original might create

shock, fire or other hazards.

9. High voltage is maintained within specified

limits by close-tolerance, safety-related

components and adjustments. If the high

voltage exceeds the specified limits, check

each of the special components.

10. Design Alteration Warning:

Never alter or add to the mechanical or

electrical design of this unit. Example: Do

not add auxiliary audio or video

connectors. Such alterations might create

a safety hazard. Also, any design changes

or additions will void the manufacturer's

warranty.

11. Hot Chassis Warning:

Some TV receiver chassis are electrically

connected directly to one conductor of the

AC power cord. If an isolation transformer

is not used, these units may be safely

serviced only if the AC power plug is

inserted so that the chassis is connected to

the ground side of the AC source.

To confirm that the AC power plug is

inserted correctly, do the following: Using

an AC voltmeter, measure the voltage

between the chassis and a known earth

ground. If the reading is greater than 1.0V,

remove the AC power plug, reverse its

polarity and reinsert. Re-measure the

voltage between the chassis and ground.

12. Some TV chassis are designed to operate

with 85 volts AC between chassis and

ground, regardless of the AC plug polarity.

These units can be safely serviced only if

an isolation transformer inserted between

the receiver and the power source.

13. Some TV chassis have a secondary

ground system in addition to the main

chassis ground. This secondary ground

system is not isolated from the AC power

line. The two ground systems are

electrically separated by insulating

material that must not be defeated or

altered.

14. Components, parts and wiring that

appear to have overheated or that are

otherwise damaged should be replaced

with parts that meet the original

specifications. Always determine the

cause of damage or overheating, and

correct any potential hazards.

1-3

Precautions

Samsung Electronics

5. Check the insulation between the blades of

the AC plug and accessible conductive parts

(examples: metal panels, input terminals

and earphone jacks).

6. Insulation Checking Procedure: Disconnect

the power cord from the AC source and

turn the power switch ON. Connect an

insulation resistance meter (500V) to the

blades of the AC plug.

The insulation resistance between each

blade of the AC plug and accessible

conductive parts (see above) should be

greater than 1 megohm.

7. Never defeat any of the B+ voltage

interlocks. Do not apply AC power to the

unit (or any of its assemblies) unless all

solid-state heat sinks are correctly installed.

8. Always connect a test instrument's ground

lead to the instrument chassis ground

before connecting the positive lead; always

remove the instrument's ground lead last.

1-3 Precautions for Electrostatically Sensitive Devices (ESDs)

1. Some semiconductor ("solid state") devices

are easily damaged by static electricity.

Such components are called Electrostatically

Sensitive Devices (ESDs); examples include

integrated circuits and some field-effect

transistors. The following techniques will

reduce the occurrence of component

damage caused by static electricity.

2. Immediately before handling any

semiconductor components or assemblies,

drain the electrostatic charge from your

body by touching a known earth ground.

Alternatively, wear a discharging

wrist-strap device. (Be sure to remove it

prior to applying power--this is an electric

shock precaution.)

3. After removing an ESD-equipped assembly,

place it on a conductive surface such as

aluminum foil to prevent accumulation of

electrostatic charge.

4. Do not use freon-propelled chemicals.

These can generate electrical charges that

damage ESDs.

5. Use only a grounded-tip soldering iron

when soldering or unsoldering ESDs.

6. Use only an anti-static solder removal

device. Many solder removal devices are

not rated as "anti-static"; these can

accumulate sufficient electrical charge to

damage ESDs.

7. Do not remove a replacement ESD from its

protective package until you are ready to

install it. Most replacement ESDs are

packaged with leads that are electrically

shorted together by conductive foam,

aluminum foil or other conductive

materials.

8. Immediately before removing the protective

material from the leads of a replacement

ESD, touch the protective material to the

chassis or circuit assembly into which the

device will be installed.

9. Minimize body motions when handling

unpackaged replacement ESDs. Motions

such as brushing clothes together, or lifting

a foot from a carpeted floor can generate

enough static electricity to damage an ESD.

WARNING1: First read the "Safety Precautions" section of this manual. If some unforeseen circumstance creates a conflict

between the servicing and safety precautions, always follow the safety precautions.

WARNING2: An electrolytic capacitor installed with the wrong polarity might explode.

1-2 Servicing Precautions

1. Servicing precautions are printed on the

cabinet. Follow them.

2. Always unplug the unit's AC power cord

from the AC power source before

attempting to: (a) Remove or reinstall any

component or assembly, (b) Disconnect an

electrical plug or connector, (c) Connect a

test component in parallel with an

electrolytic capacitor.

3. Some components are raised above the

printed circuit board for safety. An

insulation tube or tape is sometimes used.

The internal wiring is sometimes clamped to

prevent contact with thermally hot

components. Reinstall all such elements to

their original position.

4. After servicing, always check that the

screws, components and wiring have been

correctly reinstalled. Make sure that the

portion around the serviced part has not

been damaged.

1-4 Samsung Electronics

2-1Samsung Electronics

2. Reference Information

2-1 IC Summary

No.

Description

VIF-PLL/DUAL FM-PLL/AM DEMODULATOR

COLOUR TRANSIENT IMPROVEMENT

PAL/NTSC/SECAM DECODER AND SYNC PROCESSOR

RGB VIDEO PROCESSOR

BASEBAND DELAY LINE

YUV PICTURE IMPROVEMENT PROCESSOR

DUAL VIDEO AMPLIFIERS

VIDEO CONTOUR COLLECTION

RGB SWITCHING

VERTICAL DEFLECTION

VIDEO OUTPUT AMPLIFIER

AUDIO AMPLIFIER

MATRIX SURROUND IC

STEREO/DUAL SOUND PROCESSOR

NICAM DECODER

OP-AMPLIFIER

DIGITAL ECHO

QUAD OP-AMPLIFIER

DUAL ATTENUATOR

Remarks

AUTOMATIC CUT-OFF

CONTROL AND COMMA

ADJUST

NICAM PART

KARAOKE PART

Specification

TDA9815

TDA4566

TDA9160A

TDA4780

TDA4665

TDA9170

MC14577BP

AN5342K

TEA5114A

TDA8350Q

TDA6101Q

STK4142•±

UPC1853

TDA9840

SAA7283

MC4558C

M65831P

NJM3403AD

UPC1406HA

Loc No.

IC111

IC201

IC202

IC203

IC204

IC205

IC206

IC207

IC208

IC301

IC501

IC502

IC503

HC651

IC602

IC603

ICJ01

ICJ02

ICE01

ICE02

ICE03

Table 2-1 IC Summary

Reference Information

2-2 Samsung Electronics

No.

Description

A/V SWITCHING IC

SMPS CONTROL

MICOM

TELETEXT

RGB SWITCHING

PAL/NTSC/SECAM DECODER AND SYNC PROCESSOR

VIF-PLL

IF PRE-AMP

PIP PROCESSOR

OSD/CONVERGENCE SWITCHING

DYNAMIC FOCUS

CONVERGENCE AMP

Remarks

A/V SWITCHING PART

POWER PART

TELETEXT PART

PIP PART

CONVERGENCE PART

Specification

TC4053BP

KA2192

STR-S6709

RM130

SAA5281

TEA5114A

TDA9160A

TDA9815

PAP101

SDA9187

SDA9189

TEA5114A

74HC123P

STK391-020

Loc No.

IC701

IC702

IC703

IC704

IC801

IC901

ICT01

ICT02

ICP101

ICP102

ICP103

ICP201

ICP105

ICZ30

ICZ31

ICZ202

HCZ03

HCZ04

HCZ05

Table 2-1 ICSummary(Continued)

Description

SSOM-130ECP

SSOM-130ERP

SSOM-130EAP

SSOM-130EUP

SSOM-130ATP

Remarks

ENG/CHINA

ENG/RUS/HUN/POL

ENG/ARABIC

ENG/UGO/CHE/RUM

ENG/TAI/MAL/IND

Specification

RM130ECP

RM130ERP

RM130EAP

RM130EUP

RM130ETP

Loc No.

IC901

Table 2-2

Option: OSD Language

3-1Samsung Electronics

MODEL

TUNING

SYSTEM COLOUR

SOUND

NICAM

ANTENNA IMPEDANCE

SCREEN SIZE

POWER CONSUMPTION

REQUIREMENTS

FREQUENCY

PROGRAMME CHANNEL

SOUND OUTPUT

DIMENSIONS SET

(W x D x H) TRANSMITTER

WEIGHT SET

TRANSMITTER

4388 5288

Frequency Synthesizer

PAL, SECAM, NTSC3.58, NTSC4.43

B/G, D/K, I,M

B/G,I

75 ohm unbalanced coaxial

109 cm 132 cm

275 watts 275 watts

Main voltage : 220V/230V/240V

Cover range : 100 - 260V

50/60Hz

100 channels

25 watts/ch. x 2

950 x 476 x 1247 (mm) 1168 x 589 x 1384 (mm)

64 x 234 x 20(mm)

63 Kg 73 Kg

140g (Including Batteries)

Specifications are subject to change.

3. Specifications

3-2 Samsung Electronics

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