Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung TV SPT51A SPM43888PTR
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PROJECTION TV RECEIVER
Chassis : SPT51A (VERSION1)
Model: SPM5288PF
SPM5288PTR
SPM4388PF
SPM4388PTR
PROJECTION TV RECEIVER CONTENTS
1. Precautions
2. Reference Information
3. Specifications
4. Disassembly and Reassembly
5. Alignment and Adjustment
6. Troubleshooting
7. Exploded View and Parts List
8. Areas and Option Specification
9. Electric Parts List
10. Block Diagrams
11. Wiring Diagram
12 Schematic Diagrams
1. Precautions
Follow these safety, servicing and ESD precautions to prevent damage and protect against potential
hazards such as electrical shock and X-rays.
1-1 Safety 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 Fig. 1-1 AC Leakage Test
openings include the spacing between the
picture tube and the cabinet mask, 6. Antenna Cold Check:
excessively wide cabinet ventilation slots, With the unit's AC plug disconnected from
and improperly fitted back covers. the AC source, connect an electrical jumper
across the two AC prongs. Connect one
If the measured resistance is less than 1.0 lead of the ohmmeter to an AC prong.
megohm or greater than 5.2 megohms, an Connect the other lead to the coaxial
abnormality exists that must be corrected connector.
before the unit is returned to the customer.
7. X-ray Limits:
4. Leakage Current Hot Check (Figure 1-1): The picture tube is especially designed to
Warning: Do not use an isolation prohibit X-ray emissions. To ensure
transformer during this test. Use a leakage- continued X-ray protection, replace the
current tester or a metering system that picture tube only with one that is the same
complies with American National Standards type as the original. Carefully reinstall the
Institute (ANSI C101.1, Leakage Current for picture tube shields and mounting
Appliances), and Underwriters Laboratories hardware; these also provide X-ray
(UL Publication UL1410, 59.7). protection.
5. With the unit completely reassembled, plug 8. High Voltage Limits:
the AC line cord directly into the power High voltage must be measured each time
outlet. With the unit's AC switch first in the servicing is done on the B+, horizontal
ON position and then OFF, measure the deflection or high voltage circuits. Correct
current between a known earth ground operation of the X-ray protection circuits
(metal water pipe, conduit, etc.) and all must be reconfirmed whenever they are
exposed metal parts, including: antennas, serviced. (X-ray protection circuits also may
handle brackets, metal cabinets, screwheads be called "horizontal disable" or "hold-
and control shafts. The current measured down".)
should not exceed 0.5 milliamp. Reverse the
power-plug prongs in the AC outlet and Heed the high voltage limits. These include
repeat the test. the X◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo