Samsung PS42A426C1MXZF Schematic
PDP-TELEVISION CONTENTS
1. Precaution
2. Product Specification
3. Disassembly & Reassembly
4. Troubleshooting
5. Exploded View & Part List
6. Wiring Diagram
SERVICE
Manual
PS42A426C1M
PDP-TELEVISION
Chassis: F59A(P_Euro)_Carnelian
Model : PS42A426C1MXZF
Refer to the service manual in the GSPN (see the rear cover) for the more information.
This Service Manual is a property of Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
© Samsung Electronics Co., Ltd. Sep. 2008
Printed in Korea
AA82-05491A
Area Web Site
North America service.samsungportal.com
Latin America latin.samsungportal.com
CIS cis.samsungportal.com
Europe europe.samsungportal.com
China china.samsungportal.com
Asia asia.samsungportal.com
Mideast & Africa mea.samsungportal.com
GSPN (Global Service Partner Network)
Table of Contents
Chapter 1 Precaution
■ 1-1 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
■ 1-2 Servicing Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
■ 1-3 Static Electricity Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
■ 1-4 Installation Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Chapter 2 Product Specification
■ 2-1 Product Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
■ 2-2 Specifications Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
■ 2-3 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Chapter 3 Disassembly & Reassembly
■ 3-1 Overall Disassembly & Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Chapter 4 Troubleshooting
■ 4-1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
■ 4-2 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
■ 4-3 Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
Chapter 5 Exploded View & Part List
■ 5-1 PS42A426C1MXZF Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
■ 5-2 PS42A426C1MXZF Service Item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Chapter 6 Wiring Diagram
■ 6-1 Overall Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
1. Make sure all protective devices are properly installed
including non-metallic handles and compartment covers
when installing or re-installing the chassis or chassis
assemblies.
2. Make sure that no gaps exist between the cabinets for
children to insert their fingers in to prevent children from
receiving electric shocks. Gaps mentioned above include
ventilation holes between the PDP module and the cabinet mask, and the improper installation of the rear cabinet.
Errors may occur when the resistance is below 1.0 ㏁ or
over 5.2 ㏁.
In these cases, make sure that the device is repaired
before sending it back to the customer.
3. Check for Electricity Leakage (Figure 1-1)
Warning: Do not use an insulated transformer for checking the leakage. Use only those current leakage testers
or mirroring systems that comply with ANSIC 101.1 and
the Underwriter Laboratory's specifications (UL1410,
59.7).
Fig. 1-1 AC Leakage Test
4. Ahigh voltage is maintained within the specified limits
using safety parts, calibration and tolerances. When
voltage exceeds the specified limits, check each special
part.
5. Warning for Engineering Changes:
Never make any changes or additions to the circuit
design or the internal part for this product.
Ex: Do not add any audio or video accessory
connectors. This might cause physical damage.
Furthermore, any changes or additions to the original
design/engineering will invalidate the warranty.
6. Warning - Hot Chassis:
Some TV chassis are directly connected to one end of
the AC power cord for electrical reasons.
Without insulated transformers, the product can only be
repaired safely when the chassis is connected to the
earth end of the AC power source.
To make sure the AC power cord is properly connected,
follow the instructions below. Use the voltmeter to
measure the voltage between the chassis and the
earth ground. If the measurement is over 1.0V, unplug
the AC power cord and change the polarity before reinserting it. Measure the voltage between the chassis
and the ground again.
7. Some TV chassis are shipped with an additional secondary grounding system. The secondary system is
adjacent to the AC power line. These two grounding
systems are separated in the circuit using an unbreakable/unchangeable insulation material.
8. When any parts, material or wiring appear overheated or
damaged, replace them with new immediately. When
any damage or overheating is detected, correct this
immediately and make a regular check of possible
errors.
9. Check for the original shape of the lead, especially that
of the antenna wiring, any sharp edges, the AC power
and the high voltage power. Carefully check if the wiring
is too tight, incorrectly placed or loose. Never change the
space between the part and the printed circuit board.
Check the AC power cord for possible damages. Keep
the part or the lead away from any heat-emitting
materials.
Precaution
Samsung Electronics 1-1
To avoid possible damage, electric shocks or exposure to radiation, follow the instructions below with regard to safety, installation, service and ESD.
1. Precaution
1-1 Safety Precautions
(READING SHOULD
DEVICE
UNDER
TEST
EXPOSED METAL
2-WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
TEST ALL
SURFACES
LEAKAGE
CURRENT
TESTER
NOT BE ABOVE
0.5mA)
EARTH
GROUND
10. Safety Indication:
Some electrical circuits or device related materials
require special attention to their safety features, which
cannot be viewed by the naked eye. If an original part is
replaced with another irregular one, the safety or
protective features will be lost even if the new one has a
higher voltage or more watts.
Critical safety parts should be bracketed with ( ).
Use only regular parts for replacements (in particular,
flame resistance and dielectric strength specifications).
Irregular parts or materials may cause electric shock or
fire.
Precaution
1-2 Samsung Electronics
!
1. The service instructions are printed on the cabinet, and
should be followed by any service personnel.
2. Make sure to unplug the AC power cord from the power
source before starting any repairs.
(a) Remove or re-install parts or assemblies.
(b) Disconnect the electric plug or connector, if any.
(c) Connect the test part in parallel with the electrolytic
capacitor.
3. Some parts are placed at a higher position than the
printed board. Insulated tubes or tapes are used for this
purpose. The internal wiring is clamped using buckles to
avoid contact with heat emitting parts. These parts are
installed back to their original position.
4. After the repair, make sure to check if the screws, parts
or cables are properly installed. Make sure no damage is
caused to the repaired part and its surroundings.
5. Check for insulation between the blade of the AC plug
and that of any conductive materials (i.e. the metal
panel, input terminal, earphone jack, etc).
6. Insulation Check Process: Unplug the power cord from
the AC source and turn the switch on. Connect the insulating resistance meter (500v) to the AC plug blade.
The insulating resistance between the blade of the AC
plug and that of the conductive material should be more
than 1 ㏁.
7. Any B+ interlock should not be damaged.
If the metal heat sink is not properly installed, no
connection to the AC power should be made.
8. Make sure the grounding lead of the tester is connected
to the chassis ground before connecting to the positive
lead. The ground lead of the tester should be removed
last.
9. Beware of risks of any current leakage coming into
contact with the high-capacity capacitor.
10. The sharp edges of the metal material may cause
physical damage, so protect yourself by wearing gloves
during the repair.
11. Due to the nature of plasma display panels, partial afterimages may appear if a still picture is displayed on the
screen for a long period of time.
This is caused by brightness deterioration due to the
storage effect of the panel, and to prevent this from
happening, we recommend that the brightness and contrast are reduced.
(e.g.) Contrast: 25, Brightness: 50
Precaution
Samsung Electronics 1-3
Warning 1: First carefully read the "Safety Instruction" in this service manual.
When there is a conflict between the service and the safety instructions, follow the safety instruction at all times.
Warning 2: Any electrolytic capacitor with the wrong polarity will explode.
1-2 Servicing Precautions
1-3 Static Electricity Precautions
1. Some semi-conductive ("solid state") devices are
vulnerable to static electricity. These devices are known
as ESD. ESD includes the integrated circuit and the field
effect transistor. To avoid any materials damage from
electrostatic shock, follow the instructions described
below.
2. Remove any static electricity from your body by
connecting the earth ground before handling any
semi-conductive parts or assemblies. Alternatively,
wear a dischargeable wrist-belt.
(Make sure to remove any static electricity before
connecting the power source - this is a safety instruction
for avoiding electric shock)
3. Remove the ESD assembly and place it on a conductive
surface such as aluminum foil to prevent accumulating
static electricity.
4. Do not use any Freon-based chemicals.
Such chemicals will generate static electricity that
causes damage to the ESD.
5. Use only grounded-tip irons for soldering purposes.
6. Use only anti-static solder removal devices.
Most solder removal devices do not support an
anti-static feature. Asolder removal device without an
anti-static feature can store enough static electricity to
cause damage to the ESD.
7. Do not remove the ESD from the protective box until the
replacement is ready. Most ESD replacements are
covered with lead, which will cause a short to the entire
unit due to the conductive foam, aluminum foil or other
conductive materials.
8. Remove the protective material from the ESD
replacement lead immediately after connecting it to the
chassis or circuit assembly.
9. Take extreme caution in handling any uncovered ESD
replacements. Actions such as brushing clothes or lifting
your leg from the carpet floor can generate enough static
electricity to damage the ESD.
Precaution
1-4 Samsung Electronics
CAUTION
These servicing instructions are for use by
qualified service personnel only.
To reduce the risk of electric shock do not
perform any servicing other than that contained in the
operating instructions unless you are qualified to do so.
Precaution
Samsung Electronics 1-5
1-4 Installation Precautions
1. For safety reasons, more than two people are required
for carrying the product.
2. Keep the power cord away from any heat emitting
devices, as a melted covering may cause fire or electric
shock.
3. Do not place the product in areas with poor ventilation
such as a bookshelf or closet. The increased internal
temperature may cause fire.
4. Bend the external antenna cable when connecting it to
the product. This is a measure to protect it from being
exposed to moisture. Otherwise, it may cause a fire or
electric shock.
5. Make sure to turn the power off and unplug the power
cord from the outlet before repositioning the product.
Also check the antenna cable or the external connectors
if they are fully unplugged. Damage to the cord may
cause fire or electric shock.
6. Keep the antenna far away from any high-voltage cables
and install it firmly. Contact with the high-voltage cable or
the antenna falling over may cause fire or electric shock.
7. When connecting the RF antenna, check for a DTV
receiving system and install a separate DTV reception
antenna for areas with no DTV signal.
8. When installing the product, leave enough space (4")
between the product and the wall for ventilation
purposes.
Arise in temperature within the product may cause fire.
9. When moving a PDP with removable speakers, detach
the speakers first before moving the main body.
Moving the PDP main body without separating the
speakers may cause the speakers to detach, possibly
causing damage or injury.
1-6 Samsung Electronics
MEMO
Product Specification
Samsung Electronics 2-1
2. Product Specification
2-1 Product Specification
Features
Block Specification Major IC Remark
RF Tuner DNOS403SH071A(S) SEMCO
PDP Module Samsung SDI W3 42"HD/50"HD SAMSUNG SDI
Power Input Voltage: AC 100~240V, 50/60Hz
Video
Scaler MT8226 Media Tech
Video Decoder STi7103 STM
Sound
Sound AMP NTP3100 Neo Fidelity
Audio CODEC MT8291 Media Tech
Cabinet C9 Design
Specification
Model PS42A426C1M PS50A426C1M
Screen Size 42 Inches (16:9) 50 Inches (16:9)
Dimensions (WxHxD) 41.5 x 28.5 x 12.4 inches (with stand) 48.4 x 31.9 x 12.4 inches (with stand)
Weight 30.5 kg (With Stand) 37 kg (With Stand)
Voltage AC 100~240V, 50/60Hz
Colour System PAL, SECAM, NTSC4.43, NTSC 3.58
Sound System BG, DK, I, M, L, L',MPEG1
PC Resolution 1024 x 768 @ 85Hz
ANTENNAinput AIR IN (75
Ω
unbalanced)
VIDEO input
RF, AV, S-VIDEO, Scart1, 2,
Component - 480i/p, 576i/p, 720p, 1080i
PC IN (D-SUB 15p)
HDMI1, 2 -480i/p, 576i/p, 720p, 1080i
AUDIO input
RF, AV, S-VIDEO,
Component,
PC,
DVI,
HDMI
Audio Output AUDIO (L/R), Headphone
Speaker Output 10W + 10W
Items SubItems
450P 410C
PS42A426C1M PS50A426C1M PS-50C67HD (Lily2-50HD) PS-42C67HD (Lily2-42HD)
Design
Basic Info
Inch 42" 50" 50" 42"
Chassis Name F59A F59A F33B F33B
Cabinet Name C9 C9 C9 C9
Additional
Feature
IDTV / Ready IDTV(MPEG4) IDTV(MPEG4) IDTV IDTV
Motion Judder Canceller No No No No
Speaker Type (Hidden/Side/Array) Down Firing Down Firing 1/0 1/0
USB spec (Side) Service only Service only No No
F. Memory No No No No
UI Single UI Single UI Smart Smart
DCM No No No No
DLNA No No No No
RSS No No No No
Woofer No No No No
Wi-Fi No No No No
Optical Link No No No No
Wheel Key No No No No
3D No No No No
ACE2 Yes Yes No No
100Hz Yes Yes No No
1080p (24Hz) Input Yes Yes No No
H.264 Yes Yes No No
Finland Cable DTV No No No No
HDMI-CEC Yes Yes No No
HDMI Version (1,2/1.3) 1.2 1.2 1.2 1.2
HDMI Rear / Side 2/0 2/0 2/0 2/0
SORT Yes Yes TBD TBD
Picture Size(WSS) TBD TBD TBD TBD
Clone Remote Controller TBD TBD Yes Yes
Auto-Wallmount Support Yes Yes Yes Yes
Analog audio Out (L/R) 1 1 1 1
Remote Controller (Model Code) TM95 TM95 TM95 TM95
Video
Screen Size(inches) 42" 50" 50" 42"
Resolution(Number of Pixels) 1024 x 768 1365 x 768 1365 x 768 1024 x 768
Brightness 1500cd/m2 1500cd/m2 1500cd/m2 1500cd/m2
Ultra FilterBright No No No No
Anti Reflection Yes Yes No No
Contrast Ratio 20000:1 20000:1 15000:1 15000:1
Screen Aspect Ratio(16:9/4:3) 16:9 16:9 16:9 16:9
Viewing Angle over 175o (H/V) over 175o (H/V) over 175o (H/V) over 175o (H/V)
DNIe Yes Yes Yes Yes
Number of colors(expressed) 281T 281T 281T 281T
Grey Level(Gradation) 65536 65536 65536 65536
Cinema Progressive (Film mode) Yes Yes Yes Yes
Digital Comb Filter 3D 3D 3D 3D
Digital Noise Reduction Yes Yes Yes Yes
Low Noise Amplifier No No No No
Audio
Sound Effect System SRS TruSurround XT SRS TruSurround XT SRS TruSurround XT SRS TruSurround XT
Speaker Down Firing Down Firing TBD TBD
Sound output (RMS) 10W x 2 10W x 2 10W x 2 10W x 2
Product Specification
2-2 Samsung Electronics
2-2 Specifications Analysis
※○: application, X: non-application
Product Specification
Samsung Electronics 2-3
※ For the power supply and power consumption, refer to the label attached to the product.
Feature
Anti Burn-in Technology
Yes (APS, All white,
Signal pattern)
Yes (APS, All white,
Signal pattern)
Yes (APS, All white,
Signal pattern)
Yes (APS, All white,
Signal pattern)
Power Saving Yes (Off / High / Middle / Low) Yes (Off / High / Middle / Low)
"Yes (Off / High / Middle /
Low)Multi Brightness Mode
"Yes (Off / High / Middle /
Low)Multi Brightness Mode
Picture-In-Picture No No Yes Yes
Clock & On/Off Timer Yes Yes Yes Yes
Sleep Timer Yes (Max 180Min) Yes (Max 180Min) Yes (Max 180Min) Yes (Max 180Min)
Teletext(TTX) MEGA TTX Ver 2.5 (1000P) MEGA TTX Ver 2.5 (1000P) 1.5(1000P) 1.5(1000P)
V-Chip No No No No
Blue Screen On/Off No No No No
Melody On-Off Yes Yes Yes Yes
Plug & Play Yes Yes Yes Yes
Absent Power Off Yes Yes Yes Yes
Auto Power Off Yes (15Min after No Signal) Yes (15Min after No Signal) Yes (15Min after No Signal) Yes (15Min after No Signal)
OSD Language 22-Language 22-Language 21-Language 21-Language
Favorite Channel List Yes Yes No No
Still Picture No No No No
Sports Mode / Game mode Sports/Cinema/Game Mode Sports/Cinema/Game Mode Yes Yes
System
Tuners Europe Multi Europe Multi
NTSC 4.43, PAL-B/G, D/K, I, I/I',
SECAM-B/G, D/K, L/L`, AV Multi
NTSC 4.43, PAL-B/G, D/K, I, I/I',
SECAM-B/G, D/K, L/L`, A V Multi
POD (Digital Cable Ready) No No No No
Input & Output
(sid0e)
Composite (AV) 1 1 0 0
Y/C (S-Video) 1 1 0 0
Headphone(Earphone) 1 1 0 0
WISELINK (Multi Memory Slot) No No No No
WISELINK (USB) No No No No
(HDMI) 1 1 0 0
PictBridge No No No No
Input & Output
(back)
RF input 1 1 1 1
RF output No No No No
Composite (AV) No No No No
S-Video No No No No
Component (Y/Pb/Pr) 1 1 1 1
Euro Scart 2 2 2 2
PC input (D-sub) 1 1 1 1
HDMI 2 2 1 1
Motorized Mount Control Yes Yes Yes Yes
Video Monitor Out No No No No
Audio Monitor Out 1 1 1 1
Digital Audio (Coaxial) No No No No
Digital Audio (Optical) 1 1 Yes Yes
Power
Power Supply 220~240V (50/60Hz) 220~240V (50/60Hz) 220~240V (50/60Hz) 220~240V (50/60Hz)
Operation Power Consumption TBD TBD TBD TBD
Stand-By Power Consumption Under 1W Under 1W UNDER 3W UNDER 3W
Master S/W No No TBD TBD
Energy Star No No Yes Yes
Panel Life Time 60,000 hrs 60,000 hrs 60,000 hrs 60,000 hrs
Accessory
Remote Control TM96B TM96B TM96 TM96
RF Cable No No No No
User Manual Yes Yes Yes Yes
Battery 2EA(AAA) 2EA(AAA) 2EA(AAA) 2EA(AAA)
Power Cable Yes Yes Yes Yes
Stand Yes Yes Yes Yes
Speaker Integraded Integraded Integraded Integraded
Product Specification
2-4 Samsung Electronics
2-3 Accessories
Accessories Item Item code Remark
SuppliedAccessories
Remote Control
Batteries
BN59-00705A
4301-000103
Samsung Service center
Power Cord 3903-000145
Owner's Instructions BN68-01547A
Warranty Card
Registration Card
Safety Guide Manual
BN68-00514E
AA68-03575C
AA68-03242K
Ferrite Core for
Earphone/Power Cord
3301-001110
Ferrite Core for
S-VIDEO/Power Cord
3301-001305
Accessories that canbe purchased
additionally
HDMI Cable
3000mm
BN39-00641A
Electronics Store/
Internal shopping mall
HDMI/DVI cable
3000mm
BN39-00643A
Component Cables BN39-00279A
Scart Cable None
PC Cable 1830mm
PC Audio Cable BN39-00115A
Antenna Cable 2000mm
Part Name Description Description Photo
Cover
Rear
① Remove 4 screws. ( )
: M8,L16,ZPC(BLK),SWRCH18A,WP
② Remove 11 screws. ( )
: BH,+,B,M4,L3,ZPC(BLK)
③ Remove 6 screws. ( )
: PH,+,WSP,S,M4,L35,ZPC(BLK)
④ Remove 3 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
⑤ Remove the Cover Rear.
: Please lay the PDP unit face down on a
soft surface when removing the stand.
Disassembly & Reassembly
Samsung Electronics 3-1
3. Disassembly & Reassembly
3-1 Overall Disassembly & Reassembly
3-1-1 Separation of ASSY COVER P-REAR
Notice
- Be sure to separate the power cord before disassembling the unit.
- Discharge the capacitors first when separating PCB's with high capacity capacitors such as SMPS, X Main Board, YMain
Board, etc. (Aspark may be generated by the electric charge, and there is danger of electronic shock.)
- Check that the cables are properly connected referring to the circuit diagram when disassembling or assembling the unit
taking care not to damage the cables.
- Take care not to scratch the Glass Filter in the front.
- Assemble the boards in the reverse order of the disassembly.
- The plasma must be layed down on a flat padded surface for disassembly and reassembly.
3-1-2 Separation of ASSY PCB MISC-MAIN
Part Name Description Description Photo
Main
Board
① Detach all connectors from the Main
Board.
② Remove 6 screws.
: PH,+,WWP,M3,L8,NI PLT
③ Remove the Main Board.
Disassembly & Reassembly
3-2 Samsung Electronics
3-1-3 Separation of FILTER-EMI AC LINE
Part Name Description Description Photo
FILTER-
EMI
AC LINE
① Detach connector from Main SMPS.
② Remove 1 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
③ Remove FILTER-EMI AC LINE.
3-1-4 Separation of BRACKET-PCB
Part Name Description Description Photo
Bracket
PCB
① Remove 2 screw. ( )
: BH,+,B,M4,L3,ZPC(BLK)
② Remove 1 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
③ Remove 1 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
④ Remove the BRACKET-PCB.
Disassembly & Reassembly
Samsung Electronics 3-3
3-1-5 Separation of BRACKET-PCB
Part Name Description Description Photo
Bracket
PCB
① Remove 2 screw. ( )
: BH,+,B,M4,L3,ZPC(BLK)
② Remove 2 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
① Remove 2 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
② Remove 2 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
Disassembly & Reassembly
3-4 Samsung Electronics
3-1-6 Separation of ASSY BRACKET P-WALL
Part Name Description Description Photo
42"
Wall
Bracket
① Remove 2 screws. ( )
: BH,+,B,M4,L3,ZPC(BLK)
② Remove 2 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
③ Remove 4 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
④ Remove Wall Bracket.
: Please lay the PDP panel face down
on a soft surface when separating front
cover.
50"
Wall
Bracket
① Remove 2 screws. ( )
: BH,+,B,M4,L3,ZPC(BLK)
② Remove 2 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
③ Remove 4 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
④ Remove Wall Bracket.
: Please lay the PDP panel face down
on a soft surface when separating front
cover.
Disassembly & Reassembly
Samsung Electronics 3-5
3-1-7 Separation of ASSY SPEAKER P
Part Name Description Description Photo
42"
Speaker
① Remove 4 screws.
: BH,+,WP,B,M4.0,L3,ZPC(BLK),
SWRCH18A
② Remove the Speaker.
50"
Speaker
① Remove 4 screws.
: BH,+,WP,B,M4.0,L3,ZPC(BLK),
SWRCH18A
② Remove the Speaker.
3-1-8 Separation of ASSY BLUE P
Part Name Description Description Photo
42"
① Detach all connectors from the
Assy Blue p.
50"
① Detach all connectors from the
Assy Blue p.
Disconnect
Disassembly & Reassembly
3-6 Samsung Electronics
3-1-10 Separation of ASSY PDP MODULE P-LOGIC MAIN BOARD
Part Name Description Description Photo
42"
Logic
Board
① Detach all connectors from the Logic
Main Board.
② Remove 4 screws.
: WSP,PH,+,M3,L8,NI PLT
③ Remove the Logic Main Board.
50"
Logic
Board
① Detach all connectors from the Logic
Main Board.
② Remove 4 screws.
: WSP,PH,+,M3,L8,NI PLT
③ Remove the Logic Main Board.
3-1-9 Separation of SMPS-PDP TV
Part Name Description Description Photo
42"/50"
SMPS
① Detach all connectors from the SMPS.
② Remove 8 screws.
: PH,+,WWP,M3,L8,NI PLT
③ Remove the SMPS.
: Wear gloves when handling the power
board as there may be some remaining
electrical charge in the capacitor.
Specifically, avoid touching any part of
the capacitor.
Disassembly & Reassembly
Samsung Electronics 3-7
3-1-11 Separation of ASSY PDPMODULE P-X MAIN BOARD
Part Name Description Description Photo
Flat Cable
① Detach all Connectors from the X-Main
Board.
※ To separate the Flat Cable of the
X-Board, press the upper and the lower
sides of the connector.
42"
X-Main
Board
① Remove 6 screws.
: PH,+,WWP,M3,L8,NI PLT
② Remove the X-Main Board.
50"
X-Main
Board
① Remove 7 screws.
: PH,+,WWP,M3,L8,NI PLT
② Remove the X-Main Board.
Disassembly & Reassembly
3-8 Samsung Electronics
3-1-12 Separation of ASSY PDP MODULE P-Y MAIN BOARD
Part Name Description Description Photo
Flat Cable
① Detach the 6 scan board connectors
from the panel by pulling the holder from
both the top and bottom ends.
42"
Y-Scan
Board
① Remove 3 screws.
: PH,+,WWP,M3,L8,NI PLT
50"
Y-Scan
Board
① Remove 5 screws.
: PH,+,WWP,M3,L8,NI PLT
Disassembly & Reassembly
Samsung Electronics 3-9
Part Name Description Description Photo
50"
Y-Main
Board
① Remove 9 screws.
: PH,+,WWP,M3,L8,NI PLT
② Detach all connectors from the Y-Main Board.
42"
Y-Main
Board
① Remove 4 screws.
: PH,+,WWP,M3,L8,NI PLT
② Detach all connectors from the Y-Main Board.
Disassembly & Reassembly
3-10 Samsung Electronics
3-1-13 Separation of ASSY PDP MODULE P-ADDRESS BUFFER BOARD
Part Name Description Description Photo
42"
Still Bar
① Remove 4 screws.
: PH,+,WWP,M3,L8,NI PLT
② Remove the Still Bar.
50"
Still Bar
① Remove 3 screws.
: PH,+,WWP,M3,L8,NI PLT
② Remove the Still Bar.
42"
Buffer
Board
① Detach the all connectors from the
buffer board.
② Remove 7 screws.
: PH,+,WWP,M3,L8,NI PLT
③ Remove the E-Board and F-Board.
50"
Buffer
Board
① Detach the all connectors from the
buffer board.
② Remove 7 screws.
: PH,+,WWP,M3,L8,NI PLT
③ Remove the E-Board and F-Board.
Disassembly & Reassembly
Samsung Electronics 3-11
3-1-15 Separation of ASSY PCB FUNCTION
Part Name Description Description Photo
Function
Board
① Remove 2 screws.
: BH,+,B,M4,L3,ZPC(BLK)
② Remove the Function Board.
3-1-14 Separation of ASSY PANEL BRACKETS
Part Name Description Description Photo
Panel
Brackets
① Remove 4 screws. ( )
: BH,+,B,M4,L3,ZPC(BLK)
② Remove 3 screws. ( )
: BH,+,S,M4,L10,ZPC(BLK)
③ Remove the Side Panel Brackets.
3-12 Samsung Electronics
MEMO
Troubleshooting
Samsung Electronics 4-1
4-1-1 First Checklist for Troubleshooting
1. Check the various cable connections first.
- Check to see if there is a burnt or damaged cable.
- Check to see if there is a disconnected or loose cable connection.
- Check to see if the cables are connected according to the connection diagram.
2. Check the power input to the Main Board.
3. Check the voltage in and out between the SMPS ↔ Main Board, between the SMPS ↔ X, YMain Board, and between the
Logic Boards.
4. Troubleshooting
4-1 Troubleshooting
Troubleshooting
4-2 Samsung Electronics
4-1-2 Checkpoints by Error Mode
■
■
No Power
Symptom
- The LEDs on the front panel do not work when connecting the power cord.
- The SMPS relay does not work when connecting the power cord.
- The unit appears to be dead.
Major Checklist
The SMPS relay or the LEDs on the front panel does not work when connecting the power cord if the cables
are improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:
- Check the internal cable connection.
- Check the fuses.
- Check the output voltage of the SMPS.
- Replace the Main Board.
Troubleshooting
Procedures
Is the AC IN socket connector and
the Main SMPS CN800 connected?
The AC IN socket connector and
the Main SMPS CN800 connected
Is the Fuse (F801S) of the Main
SMPS Power Input Part blown?
Replace Fuse (F801S)
Replace the Main SMPS
CN801
Check the STD5V vOLTAGE
Check PS_ON voltage if it is 0V
Replace the Main Board
①
①
②
Yes
No
Yes
No
Yes
Yes
Troubleshooting
Samsung Electronics 4-3
■
■
When the unit is repeatedly turning on and off
Symptom - The SMPS relay is repeatedly turning on and off.
Major Checklist
In general, the SMPS relay repeatedly turns on and off by the protection function due to a defect on a board
connected to the SMPS.
- Disconnect all cables from the SMPS, operate the SMPS alone and check if the SMPS works properly and if
each voltage output is correct.
- If the symptom continues even when SMPS is operated alone, replace the SMPS.
- If the symptom is not observed when operating the SMPS alone, find any defective assemblies by connecting
the cables one by one.
Troubleshooting
Procedures
Caution
When separating and connecting the cables such as CN810, CN809, CN808, CN807 of the Main SMPS, CN4701
of the X Main Board, and CN5707 of the Y Main Board, a spark may be generated by the electric charge of the
high capacity capacitor. Therefore, wait some time after disconnecting the power cord from the unit.
Does the symptom continue when
connecting the power after removing
CN810 from the SMPS?
Replace the Y Main Board
Does the symptom continue when
connecting the power after removing
CN809 from the SMPS?
Replace the X Main Board
Replace the Logic Board
Does the symptom continue when
connecting the power after removing
CN807 from the SMPS?
Replace the SMPS
①
②
③
Yes
No
No
No
Yes
Yes
Troubleshooting
4-4 Samsung Electronics
■
■
No Picture (When audio is normal)
Symptom - Audio is normal but no picture is displayed on the screen.
Major Checklist
- This may happen when the Main Board is functioning but the X, YMain Board, Logic Board, or Y Buffer
Boards are not.
- The output voltage of the Main SMPS.
- This may happen when the LVDS cable connecting the Main Board and the Logic Board is disconnected.
Troubleshooting
Procedures
Caution
When separating and connecting the cables such as CN810, CN809, CN808, CN807 of the Main SMPS, CN4701
of the X Main Board, and CN5707 of the Y Main Board, a spark may be generated by the electric charge of the
high capacity capacitor. Therefore, wait some time after disconnecting the power cord from the unit.
Are the Vs and Va voltages normal after
removing all cables from the SMPS?
(CN810, CN809, CN808, CN807)
Replace the SMPS
Yes
No
Did problem improve?
Did problem improve?
Did problem improve?
Did problem improve?
Replace the Y Main Board
Replace the X Main Board
Replace the Logic Board
Replace the Y Scan Board
No
No
No
No
Yes
Yes
Yes
Troubleshooting
Samsung Electronics 4-5
■■
No Sound
Symptom - Video is normal but there is no sound.
Major Checklist
- When the speaker connectors are disconnected or damaged.
- When the sound processing part of the Main Board is not functioning.
- Speaker defect.
Troubleshooting
Procedures
Is the cable connection between the
Main Board and the speaker
properly connected?
Connect the cable properly or
replace the cable, if necessary.
Is the output voltage of SMPS normal?
(CN801 #13)
Replace the SMPS
Replace the Main Board
Is the speaker output terminal
of the Main Board normal?
Replace the Speaker
①
②
③
Yes
No
No
No
Yes
Yes
Loading...