Refer to the service manual in the GSPN (see the rear cover) for the more information.
Page 2
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.
AreaWeb Site
North Americaservice.samsungportal.com
Latin Americalatin.samsungportal.com
CIScis.samsungportal.com
Europeeurope.samsungportal.com
China china.samsungportal.com
Asiaasia.samsungportal.com
Mideast & Africamea.samsungportal.com
1. Check if the measurement and test equipment is working properly.
2. Secure sufficient work space for disassembling the product.
3. Prepare a soft pad for disassembling the product.
Page 6
Alignment & Adjustment
3-2Samsung Electronics
3-2 How to Access Service Mode
1. General Remote
To Enter : Power Off → INFO → MENU → MUTE → Power On
(Interval between key strokes : less than 3 sec)
To Exit : Power Off → ON
2. Factory Remote
To Enter : Power On → INFO → FACTORY Key (Interval between key strokes : less than 3 sec)
To Exit : Power Off → On
Press the Factory key twice with a key stroke interval of more than 1 second (Pressing once enters Aging Mode)
3. Settings when entering Factory mode
- Sharp Screen (Dynamic), Color Tone (Cool1), Factory (Dynamic CE Off)
4. Adjustment Procedures
- Channel ▲▼Key : Select an item.
- Volume ◀▶ Key : Adjust the value up or down.
- MENU Key: Save the changes to the EEPROM and return to the higher-level mode.
- Using the Numeric (0~9) keys, you can select a channel.
- Using the SOURCE key, you can switch AV modes.
5. Initial SERVICE MODE DISPLAY State
※ The version of the firmware displayed at the bottom of the screen may differ and the firmware is subject to change for the
improvement of product functions.
※ If you have adjusted the settings in Service Mode, you have to reset the product.
1. Calibration
2. Option Table XXXX XXXX
3. White Balance
4. SVP-FX
5. Option Block
6. STV8257/STA323W
7. YC Delay
8. Adjust
9. -----
10. W/B MOVIE
11. Checksum
12. Reset
13. ----T-AUD42PEUH-XXXX (Main Micom Ver)
T-AUD42PEUHS-XXXX (Sub Micom Ver)
Month / Day / Year / Hour / Min. / Sec.
Page 7
Alignment & Adjustment
Samsung Electronics3-3
1. Calibration: W/B Calibration
AV Calibration
DTV Calibration
PC Calibration
HDMI Calibration
2. Option Table: Setting option
Blue Eye: OFF
Gamma : OFF
Logic D/L: OFF
Auto Power: ON
Dynamic CE: OFF
EnergySave: OFF
LBE/FBE: ON
FRC-Micronas: OFF
FRC-Samsung : OFF
LNA: OFF
Carrier Mute : ON
Language: English
Auto FM: ON
High Deviation : OFF
TTX: ON
TTX List: Flof
Dynamic AslGain: OFF
Tuner TOP: 8
TTX Group: Auto
TTX Level: L1.5
PS Test: MIN
LED OnTime: 10
LED OffTime: 0
Debug: Smart
Ch. Table: SUWON
iDTV Country: UK
ACR: OFF
3. White Balance: Adjustment White Balance
( Range 0~255 )
Sub Bright : 128
R off set: 128
G off set : 128
B off set: 128
Sub contrast: 128
R gain: 128
G gain: 128
B gain: 128
1. Calibration
2. Option T
able XXXX XXXX
3. White Balance
4. SVP-FX
5. Option Block
6. STV8257/STA323W
7. YC Delay
8. Adjust
9. -----
10. W/B MOVIE
11. Checksum
12. Reset
13. ----T-AUD42PEUH-XXXX (Main Micom Ver)
T-AUD42PEUHS-XXXX (Sub Micom Ver)
Month / Day / Year / Hour / Min. / Sec.
3-3 Factory Data
★ The underlined are items applied during the service adjustment. None of the others should be adjusted.
13. ----T-AUD42PEUH-XXXX (Main Micom Ver)
T-AUD42PEUHS-XXXX (Sub Micom Ver)
Month / Day / Year / Hour / Min. / Sec.
Page 9
Alignment & Adjustment
Samsung Electronics3-5
5. Option Block
FRC-Micronas
FRC-Samsung
LBE/FBE: Test Pattern00H
Black Stretch Tilt50H
Black Stretch Gain 55H
Black Stretch Ratio 33H
Skin En01H
Skin Gain80H
Skin T X70H
Skin T Y64H
White En00H
MCM Gain80H
White T X4FH
White T Y54H
CHY Gain13EH
CHY Gain242H
CHC Gain140H
CHC Gain240H
CHM Gain13DH
CHM Gain245H
ColorGain TY00H
ColorGain TC00H
ColorGain TM00H
Color Gain80H
Input RGB Gain80H
Input RGB Offset00H
6. STV8257/STA323W : Sound IC Correct Register
Ch1 Volume: 55H
Ch2 Volume: 55H
AGC Gain: 07H
AM Prescale: 00H
ZWT TH: 0AH
AV Delay: 55H
Comp Delay: 32H
HDMI Delay: 32H
PC Delay: 32H
L1 Att/Rel Th: EFH
1. Calibration
2. Option
Table XXXX XXXX
3. White Balance
4. SVP-FX
5. Option Block
6. STV8257/STA323W
7. YC Delay
8. Adjust
9. -----
10. W/B MOVIE
11. Checksum
12. Reset
13. ----T-AUD42PEUH-XXXX (Main Micom Ver)
T-AUD42PEUHS-XXXX (Sub Micom Ver)
Month / Day / Year / Hour / Min. / Sec.
Page 10
Alignment & Adjustment
3-6Samsung Electronics
1. Calibration
2. Option
Table XXXX XXXX
3. White Balance
4. SVP-FX
5. Option Block
6. STV8257/STA323W
7. YC Delay
8. Adjust
9. -----
10. W/B MOVIE
11. Checksum
12. Reset
13. ----T-AUD42PEUH-XXXX (Main Micom Ver)
T-AUD42PEUHS-XXXX (Sub Micom Ver)
Month / Day / Year / Hour / Min. / Sec.
7. YC Delay
PALB/G: 99H
PAK D/K: 88H
PALI: 88H
SECAM B/G: 88H
SECAM D/K: 77H
SECAM L/L': 66H
NTSC 3.58: 96H
NTSC 4.43: CCH
AV PAL: A 9H
AV SECAM: 66H
AV NT3.58: 98H
AV NT4.43: CCH
AV PAL60: 77H
8. Adjust
V Mute Time: 10
Melody Volume: 9
Ana_Dimm_Max: FEH
TTX Contrast: 50
TTX Brightness: 50
TTX Color: 50
Dynamic Contrast: 100
Dynamic Sharpness : 60
Standard Contrast: 90
Standard Brightness : 80
Standard Color: 70
Standard Sharpness : 70
Movie Contrast: 60
Movie Brightness: 50
Movie Color: 50
Movie Sharpness: 40
LNAPLUS: RFDB-1 Level2
RFDB-2 Level5
RFDB-3 Level9
RFDB-4 Level24
Hotel Option: Hotel ModeOFF
PWR On CH1
PWR On Vol.10
Max Volume100
L.Key LockOFF
PWR On SrcRF
9. -----
Page 11
Alignment & Adjustment
Samsung Electronics3-7
1. Calibration
2. Option
Table XXXX XXXX
3. White Balance
4. SVP-FX
5. Option Block
6. STV8257/STA323W
7. YC Delay
8. Adjust
9. -----
10. W/B MOVIE
11. Checksum
12. Reset
13. ----T-AUD42PEUH-XXXX (Main Micom Ver)
T-AUD42PEUHS-XXXX (Sub Micom Ver)
Month / Day / Year / Hour / Min. / Sec.
10. W/B MOVIE
RF/AV COMPPC HDMI
WB MovieOFFOFFOFFOFF
Color ModeMovie Movie MovieMovie
Color ToneWarm2 Warm2 Warm2 Warm2
W1 R Gain130129130134
W1 B Gain117118119120
W1 R Offset138137138138
W1 B Offset119114115122
W2 R Gain132133134136
W2 B Gain115114115116
W2 R Offset141140141141
W2 B Offset115112113116
Movie Contrast70707070
Movie Brightness 50505050
Movie Color45454545
Movie Sharpness 25252525
11. Checksum
12. Reset
13. -----
Page 12
Alignment & Adjustment
3-8Samsung Electronics
3-4 Service Adjustment
3-4-1 White Balance - Calibration
If picture color is wrong, do calibration first.
Execute calibration in Factory Mode
1. Source: VIDEO
2. Setting Mode: PALVideo (MODE : #2)
3. Pattern: Pattern #24 (Chess Pattern)
4. Use Equipment : K-7256 or Equipment of equality level
5. Work order
1) Enter by Factory Mode select "1.CALIBRATION".
2) Select "AV CALIBRATION" again in CALIBRAION MENU.
3) After Completing Calibration, come out "Av success". OSD on the screen (bottom-side) for about 3 seconds.
Source AV : PALcomposite, Component : 1280*720/60Hz
PC : 1024*768/60Hz
( Chess Pattern )
Page 13
Alignment & Adjustment
Samsung Electronics3-9
3-4-2 White Balance - Adjustment
If picture color is wrong, check White Balance condition.
Equipment : CA210, Patten : Toshiba
Adjust W/B in Factory Mode
Sub brightness and R/G/B Offset controls low light region
Sub contrast and R/G/B Gain controls high light region
Source AV : PAL composite, Component : 1280*720/60Hz,
HDMI[DVI] : 1280*720/60Hz
[ Test Pattern : MSPG-945 Series Pattern #16 ]
* Color temperature
1500K +/-500, -6 ~-20 MPCD
* Color coordinate
H/L : 270/280 +/- 2
L/L : 270/280 +/- 3, 2.1 Ft +/-0.05 Ft
( SAMSUNG WHITE BALANCE Adjustment PATTERN with FPD )
3-4-3 Conditions for Measurement
1. On the basis of toshiba ABLpattern : High Light level (57 IRE)
2. Optical measuring device : CA210 (FL)
Please use the MSPG-925 LTH generator for model PS-42C6H.
Page 14
Alignment & Adjustment
3-10Samsung Electronics
3-4-4 Method of Adjustment
1. Adjust the white balance of AV, Component and DVI Modes.
(AV → Component)
a) Set the input to the mode in which the adjustment will be made (RF → DTV → PC → DVI).
* Input signal - VIDEO Mode : Model #2 (744*484 Mode), Pattern #16
- DTV, DVI Mode : Model #6 (1280*720 Mode), Pattern #16
- HDMI Mode : Model #6 (1280*720 Mode), Pattern #16
b) Enter factory color control, confirm the data.
c) Adjust the low light. (Refer to table 1, 2 in adjustment position by mode)
- Adjust sub - Brightness to set the 'Y' value.
- Adjust red offset ('x') and blue offset ('y') to the color coordinates.
* Do not adjust green offset data.
d) Adjust the high light. (Refer to table 1, 2 in adjustment position by mode)
- Adjust red gain ('x') and blue gain ('y') to the color coordinates.
* Do not adjust the green gain and sub-contrast (Y) data.
( SAMSUNG WHITE BALANCE Adjustment PATTERN with FPD )
( SAMSUNG WHITE BALANCE Adjustment PATTERN with FPD )
Low light
Measurement point
Hight light
Measurement point
Page 15
Alignment & Adjustment
Samsung Electronics3-11
3-5 Software Upgrade
3-5-1 How to Update Flash ROM
1. Installthe Flash Downloader
Connect Set (Service Jack) and Jig Cable to execute Program Update.
2. Flash Downloader program update
- Before Turning on the set, Click "connect" which is under of OSD Screen.
- Turn on the Set.
Page 16
Alignment & Adjustment
3-12Samsung Electronics
3-6 Replacements & Calibration
* Check items listed after changing each
Replaced ItemsCode No.Check Items
ASSY PCB MISC-MAINBN94-01364A
1) Auto Program
2) Let the user go through subscription process after contacting
user's cable service provider.
ASSY PCB P-SMPS(MAIN)BN96-03743A Vs, Va voltage check and adjust
ASSY PCB P-SMPS(DC DC)BN96-01856A Output voltage check and adjust
ASSY PDP P-LOGIC BOARDBN96-04177A
Not adjustment
ASSY PDP P-X MAIN BOARDBN96-03350A
ASSY PDP P-YMAIN BOARDBN96-03351A
ASSY PDP P-YMAIN SCAN BOARDBN96-03352A
ASSY PDP P-ADDRESS E BUFF BOARDBN96-03353A
ASSY PDP P-ADDRESS F BUFF BOARDBN96-03354A
※ When replacing the SMPS or PDP panel, you have to check the voltage printed on the panel sticker and adjust it.
※ The ASS'Ycode can be changed, see "5. Electrical Part List."
Page 17
Alignment & Adjustment
Samsung Electronics3-13
3-6-1 Voltage Adjustment
1. SMPS Panel voltages must be adjusted after changing SMPS-PCB or PDP module.
ValueBoard Adjustment
Vs200
SMPS-MAIN
Va65
Vset195
SMPS-DC/DCVe120
Vscan-190
2. Apoint of adjusting SMPS-MAIN voltage.
Voltage Label
SMPS-MAIN
SMPS-DC/DC
Vs Adjustment
Vs Test point
Va Adjustment
Va Test point
Page 18
Alignment & Adjustment
3-14Samsung Electronics
3. Apoint of adjusting SMPS-DC/DC.
Vset (Middle)
Vscan (Right)
Test Point
Vscan/Vset
Adjustment
Point
VE
Adjustment
Point
Ve Test Point
* Use base chassis of PDP panel as GND point.
Page 19
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. A high 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 Electronics1-1
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
2-WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
TEST ALL
EXPOSED METAL
SURFACES
LEAKAGE
CURRENT
TESTER
NOT BE ABOVE
0.5mA)
EARTH
GROUND
Page 20
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
1-2Samsung Electronics
!
Page 21
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 Electronics1-3
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
Page 22
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
1-4Samsung 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.
Page 23
Precaution
Samsung Electronics1-5
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.
※ The code number of cable(Lead-connector) can be changed, see "5. Electrical Part List."
Page 28
8-4Samsung Electronics
MEMO
Page 29
Product Specification
Samsung Electronics2-1
2. Product Specification
2-1 Product Features
■ Chip Description
- SVP-PX (IC611) : SVPTMPX contains dual-purposed triple 10-bit high-precision and high speed video ADCs for both PC and
video inputs, the high speed HDMI could support all HDMI inputs up to 135MHz with HDCP format, the highperformance multi-format 3D digital comb video decoder that supports NTSC, PAL, and SECAM*, a HDTV
sync separator, motion adaptive de-interlacing engine, and the video format conversion engine, supporting
multi-window display in many different output modes.
- STV8257DSX (IC503) : Digital Audio Decoder/Processor
- STA323W (IC505) : Audio power amplifiers
BlockSpecficationMajor ICRemark
RFTunerTCLW3001PD32S(H)SEMCO
PowerInput Voltage : AC 220 - 240 V~, 50 Hz
Video
Scaler
SVP-PXTRIDENT
Video Decoder
Sound
Sound ProcessorSTV8257DSXST Microelectronics
Sound AMPSTA323WST Microelectronics
Audio S/WMM74HC4052
PDP ModuleSamsung SDI V5.142"HDSAMSUNG SDI
RemoconTM87B
CabinetC6
Page 30
Product Specification
2-2Samsung Electronics
2-2 Key Features
ModelPS-42C6H
Screen Size107 Cm / 42 Inches (16:9)
Dimensions1055(W) x 340(D) x 758.5(H) mm
Weight33.2 Kg
Voltage
EU : AC 220-240V~, 50Hz
CIS : AC 100-240V~, 50/60Hz
Colour SystemPAL, SECAM, NT3.58, NT4.43
Sound SystemBG, DK, I, L
Number of Pixels1024(H) X 768(V)
ANTENNAinputVHF, UHF (75Ωunbalanced)
VIDEO input
SCART1, SCART2
COMPONENT IN (480i/P, 576i/P, 720P, 1080i)
PC IN (MINI D-SUB 15P)
HDMI/DVI IN
AUDIO input
SCART1, SCART2
Component
PC
DVI
Audio OutputAUDIO OUT
Speaker Output10W + 10W ( 8Ω)
Page 31
Product Specification
Samsung Electronics2-3
■ H/W Configuration
- Video : SVP-PX
- Sound : STA8257DSX, STA323W
- Tuner : TCLW3001PD32S (H)
■ S/W Configuration
- Main Micom : M30840SGP (IC202)
- Sub Micom : 3F866BXZZ (IC207)
■ Picture
- System : Video → PAL/SECAM/NTSC4.43, Sound → Analog
- Zoom, Previous channel, Blue Screen, Color Tone, Screen Burn Protection
■ Remocon
- TM86
■ Power Supply
- EU : AC 220-240V, 50Hz
- CIS : AC 100-240V~, 50/60Hz
■ Power Consumption
- Max Power : 360 W
Page 32
Product Specification
2-4Samsung Electronics
■ Both screen position and size will vary, depending on the type of PC monitor and its resolution.
The table below shows all of the display modes that are supported: (N : Negative, P : Positive)
Video Signal
Resolution
(Dot X Line)
Vertical
Frequency
(Hz)
Horizontal
Frequency
(KHz)
Vertical
Polarity
Horizontal
Polarity
PS-42C7S
PS-42C6H/
PS-42Q7H
PS-50C6H/
PS-50Q7H
IBM PC / AT
Compatible
640 X 35070.08631.469NP
√√√
720 X 40070.08731.469PN
√√√
640 X 480
59.94031.469NN
√√√
70.00035.000N/PN/P
√√√
72.80937.861NN
√√√
75.00037.500NN
√√√
800 X 600
56.25035.156N/PN/P
√√√
60.31737.879PP
√√√
70.00043.75N/PN/P
√√√
72.18848.077PP
√√√
75.00046.875PP
√√√
848 x 480
60.00031.020PP
√√
74.76937.684PN
√√
1024 X 768
60.00448.363NN
√√
70.06956.476NN
√√
72.00057.672N/PN/P
√√
75.02960.023PP
√√
1280 X 72059.85544.772PN
√
1360 X 76860.01547.712PP
√
▶ The interlace mode is not supported.
▶ The TV operates abnormally if a non-standard video format is selected.
▶ 480i/p, 576i/p, 720p, or 1080i is not available in PC mode.
▶ The PC text quality is optimum in WVGAmode (848 x 480@60Hz). (PS-42C7S)
▶ The PC text quality is optimum in XGAmode (1024 x 768@60Hz). (PS-42C6H/PS-42Q7H)
▶ The PC text quality is optimum in WXGAmode (1360 x 768@60Hz). (PS-50C6H/PS-50Q7H)
Page 33
Product Specification
Samsung Electronics2-5
2-3 Specifications Analysis
ModelPS-42C6H (Audi-42HD)Puccini(V4)
Design
Basic
Display TypePDPTVPDP TV
Built-In TunerOO
Resolution1024 x 7681024 x 768
PDP ModuleV5.1V4
Screen Size42 inches42 inches
Aspect Ratio16 : 916 : 9
Power Consumption360 W380 W
Dimensions1055(W) x 340(D) x 758.5(H) mm1050(W) x 86(D) x 755(H) mm
Weight33.2 Kg59.2 Kg
Picture
Brightness1,100 Cd/m21,300 Cd/m2
Contrast Ratio5000:110,000 : 1
Image EnhacerFBEDNIe-L
Audio
EqualizerOO
Auto VolumeOO
Surround SoundSRS TruSurroundSRS TruSurround
Speaker Output10 W + 10 W15 W + 15 W
SpeakerIncludedIncluded
Features
PIPOO
Double ScreenXO
TTXOO
Still ImageOO
My Color ControlXO
Color WeaknessXO
Energy SavingOO
Screen Burn ProtectionOO
Connections
Antenna1 Input1Input
CVBSX1AV
S-VideoX1 Input
Component(Y/PB/PR)1 Input1 Input
PC(D-SUB)1 Input1 Input
DVIXX
HDMI1 Input1 Input
Sub WooferXX
OpticalXX
CoaxialXX
Page 34
Product Specification
2-6Samsung Electronics
2-4 Accessories
AccessoriesItemItem codeRemark
SuppliedAccessories
Remote Control
Batteries
BN59-00539A
4301-000103
Samsung Service center
Power Cord3903-000145
Owner's InstructionsBN68-01192C
Warranty Card
Registration Card
Safety Guide Manual
BN68-00514C
AA68-03575A
AA68-03242E
Ferrite Core for
Power Cord
BN63-01798A
Accessories that can be purchased
additionally
Audio CablesBN39-00149A
Electronics Store/
Internal shopping mall
HDMI Cable
3000mm
BN39-00641A
HDMI/DVI cable
3000mm
BN39-00643A
Component Cables (RCA)
1500mm
BN39-00279A
Scart CableNone
PC Cable
1830mm
BN39-00115A
PC Audio Cable
2000mm
BN39-00061B
Antenna Cable
3000mm
BN39-00333A
Page 35
PCB Diagram
Samsung Electronics9-1
9. PCB Diagram
9-1 Main Board
NoNameFunctionDescription
①
SVP-PXScaler IC Controller
SVPTMPX contains dual-purposed triple 10-bit high-precision and
high speed video ADCs for both PC and video inputs, the high
speed HDMI could support all HDMI inputs up to 135MHz with
HDCP format, the highperformance multi-format 3D digital comb
video decoder that supports NTSC, PAL, and SECAM*, a HDTV
sync separator, motion adaptive de-interlacing engine, and the video
format conversion engine, supporting multi-window display in many
different output modes.
②
M30840SGPIC MICOM
With a 16-Mbyte address space, this microcomputer combines
advanced instruction manipulation capabilities to process complex
instructions by less bytes and execute instructions at higher speed.
The Illumination sensor that senses the
quantity of light. It senses the illumination and
automatically adjusts the screen brightness
according to the surrounding brightness when
the Power Saving Mode of the User menu is
set to Auto.
9-2 Power & IR Board
Page 39
PCB Diagram
Samsung Electronics9-5
9-4 Main SMPS Board
① CN800 : AC IN (90 ~ 264V)
※ CN811, CN804-2 and CN805, CN806, CN807, CN808 are not used.
⑥ D5.3V, Vg, Ve Test Point
⑦ Va, Vset, Vscan Test Point
①
CN809(Main SMPS)
↔
CN3(DC-DC SMPS)
Pin No.Signal
15.3V
2Vg
3RTN
4RTN
5RTN
6RTN
7RTN
8Va
9Va
10N/C
11Vs
12Vs
②
CN2(DC-DC SMPS)
↔
CN5007(Y SMPS)
Pin No.Signal
15.3V
2Vg
3RTN
4Vscan
5RTN
6Vset
7RTN
8RTN
9Vs
10Vs
③
CN4(DC-DC SMPS)
↔
CN4001(X SMPS)
Pin No.Signal
1Vs
2Vs
3RTN
4RTN
5Ve
6RTN
7RTN
8Vg
95.3V
④ CN1 : N/A
⑤ CN5(DC-DC SMPS)
↔
CN2509(E-Buffer)
Pin No.Signal
1RTN
2N/C
35.3V
4N/C
5Va
Page 41
PCB Diagram
Samsung Electronics9-7
9-6 PDP Module
NoAssyDescription
①
ASSY PCB P-SMPSDC-DC Board
②
ASSY PDP MODULE P-X MAIN BOARDX Drive Board
③
ASSY PDP MODULE P-YMAIN BOARDY Drive Board
④
ASSY PDP MODULE P-YMAIN SCAN BUFFERY Buffer Board
⑤
ASSY PDP MODULE P-ADDRESS E BUFFERAddress Buffer Board
⑥
ASSY PDP MODULE P-ADDRESS F BUFFERAddress Buffer Board
⑦
ASSY PDP MODULE P-LOGIC MAIN BOARDLogic Main Board
Page 42
9-8Samsung Electronics
MEMO
Page 43
Reference Information
Samsung Electronics14-1
14. Reference Information
14-1 Other issues related to other products
ProblemDescriptions
A fixed screen can cause
permanent damage to the TV
Braun tube.
Braun, PDP and LCD TVs can all be damaged. When a still image is displayed in a sequence,
this can leave stains or after-images due to the characteristics of the panel.
However, the DLP TV has the advantage that no stains or after-images are left on the screen.
The DLP TV has mirror pixels on the DMD panel that project the beam onto the screen, in
which the mirror is a digital representation of 0s and 1s, leaving no trace of light.
The mirror returns to a blank state so that no stains or after-images are left.
Length of DVI Cable / PC RGB
Cable
- A too long DVI cable may cause a malfunction or degradation of the visual quality due to an
attenuation of the signal. There is no recommendation for the cable length at present.
In general, although a cable length of up to 5 meters should work, please check if video is
properly displayed on the screen after connecting. If you think the length of the cable is longer
than for normal use, check the visual quality of the video on the screen and shorten the
length, if necessary.
- This also applies to the PC RGB (D-Sub) cable. When the length of the cable is longer than
for normal use, video may not be displayed on the screen. In this case, shorten the cable
length.
When a digitally distributed TV
user receives HD-rated
broadcasts:
The digital distributed TV (Ready Technique) can render HD sources as HD-rated.
However, you need to install a set-top box for this purpose. The digital TV alone cannot render
HD broadcasting as HD-rated. Install the formal set-top box for HD broadcasts.
When a digital distributed TV
user selects normal size (4:3) to
receive SD-rated digita
broadcasts:
The digitally distributed TV (Ready Technique) renders any broadcasting service as SD-rated.
However, when connected to a set-top box, the digital TV renders HD broadcasts as HD-rated
and renders SD as SD-rated. The screen size is scaled to 4:3.
When a digitally built-in TV user
receives SD (air) broadcasting:
The digitally integrated TV ("built-in" type) renders SD broadcasting as SD-rated.
This can be understood easily.
Even a high-resolution TV cannot improve a low resolution picture into high quality.
In contrast, an SD-rated TV cannot represent HD broadcasting as HD because the resolution of
the TV is lower than the original.
When selecting a picture size of
4:3 in connection with a
computer or a multimedia
device:
The representation capability of SD or HD-rated depend entirely on the TV set. The HD TV can
render HD broadcasting as HD-rated only when it receives HD sources.
In the meantime, the HD TV renders SD as SD-rated when it receives SD sources.
The picture size has nothing to do with the resolution; TV models like SVP-XXL3HD or
SVP-XXL6HD have a size adjustment feature to 16:9, 4:3, Panorama, Zoom1, Zoom2 and Auto
Wide. This is about the aspect ratio of the top and bottom boundaries to the overall screen and
users can select their preference.
Page 44
Reference Information
14-2Samsung Electronics
■ SD/HD broadcasts and the TV's display capability are related
1. A digital broadcast should be transmitted in wide screen (an aspect ratio of 16:9) HD. If the broadcasting station converts a
conventional program created in normal screen (aspect ratio of 4:3) into a digital signal and broadcasts the signal, the left and
right of the picture will not be displayed.
This symptom also appears in other manufacturer's TV's. The three appliance companies are trying to resolve the problem
through the Ministry of Information and Communication.
* When watching an SD (normal) broadcast through a Digital (Wide) TV (480P normal broadcast)
* When watching an SD (normal) broadcast through a Digital Ready (Wide) TV (Using a set-top-box)
* When watching an analog (normal) broadcast through a wide TV
(When watching a broadcast after changing the aspect ratio of the TV from 16:9 (wide screen) to 4:3)
2. When watching a DVD title or video tape in wide screen (21:9) through a wide (16:9) TV, watching video from a computer or
game console by selecting the aspect ratio to 4:3, or watching video from a DVD, VCR, computer or game console through a
wide TV by selecting the aspect ratio to normal (4:3) or wide (21:9), the left and right, or top and bottom of the picture will not be
displayed.
This symptom appears in other manufacturer's TV's. The three appliance companies are trying to resolve the problem through
the Ministry of Information and Communication.
■ Changing the Order of the Picture Size for 16:9 Display Devices
■ Changing the Order of the Picture Size for DTV 1080i/720p Sources
■ Restrictions
1. When you want to change the picture size in PIP 'ON', you must turn the PIP off before changing the size.
However, you can change the main picture size even in PIP ON for products with no restrictions.
2. When the picture size is not Normal (4:3 for 4:3 display devices, 16:9 for 16:9 display devices) and you turn PIP on, the picture
size is changed to Normal.
However, you can turn PIP on without changing the picture size for products with no restrictions.
3. In the OSD notation for the picture size, 16:9 is represented as "Wide" instead of "16:9" for devices other than with 16:9 dis
plays.
Ex: For LCD 15:9 devices, "Wide" is displayed on the OSD instead of "16:9".
4. The picture size can be changed even in the blue screen.
However, the picture size should be controlled by the product specifications if the change is impossible due to hardware
restrictions.
Wide 4:3
Wide 4:3
Page 45
Reference Information
Samsung Electronics14-3
14-2 Technical Terms
Virtual Channel
In digital channels, a virtual channel is used. A virtual channel
is a function that enables users to watch a channel by selecting
a virtual channel number regardless of the region of the user.
Run Auto Channel Scan for digital broadcasts, tune in to a UHF
channel number according to the region for terrestrial broadcasts, or tune into a channel number allocated by the cable
broadcasting station for a cable TV network, and then select a
displayed virtual channel.
For example, even if you tune into channels UHF 14(MBC),
15(KBS1), 16(SBS), 17(KBS2) and 18(EBS) broadcast from
Kwanak mountain in Seoul, you can watch the channels using
virtual channels such as 11-1(MBC), 9-1(KBS1), 6-1(SBS), 71(KBS2) and 10-1(EBS) regardless of your region and the
actual local channel number. The virtual channel numbers may
be used nationwide, but the virtual channel numbers may vary
depending on the local broadcasting stations.
(Since the digital channel numbers may vary depending on
your region and can be changed by the broadcasting policy,
ask your local broadcasting station or regional cable TV network company about the channel numbers.) If the virtual channel numbers are saved and the TV set can receive digital
broadcasting, you can watch a digital channel by pressing the
DTV+ button and pressing the first two digits of the corresponding virtual channel number.
Custom Color Adjustment
Using this function, a user can adjust the color according to
personal preferences (Red, Grass-Color, Sky-Color, GoldColor, Skin-Color, White, Standard, Custom) without affecting
other colors using automatic selection mode or fine adjustment
mode.
Simultaneous Screen
Using this function, a user can view two video signals from
separate video sources on a single screen at the same time.
For example, you can watch TV and video simultaneously.
Dolby Digital
This is the digital sound standard developed by the Dolby
Laboratory. You can select your preferred digital surround
mode after connecting external speakers.
Digital Broadcasting
Digital Broadcasting is a television broadcasting signal digitized
and transmitted according to the United States' terrestrial digital
broadcast standard, or ATSC.
Mono
A type of audio interface that transmits the audio signal through
a single channel only.
Through a mono interface, it is hard to experience stereophonic
sound and the sound is played using only one speaker.
Reception Sensitivity Amplification (LNA)
A signal amplification technique that amplifies a weak broadcasting signal by applying satellite technology to provide better
visual quality even for users in regions where only a weak
broadcasting signal is available. (LNA: Low Noise Amplifier)
Sub Woofer
A Sub Woofer is a speaker for ultra bass sound output only
whose frequency is as low as 150Hz. There are two types: an
active type which includes an amplifier, and a passive type,
which requires an additional amplifier.
Stereo
A type of audio interface that transmits audio signal through 2
channels.
Stereo transmits audio signals for right and left sound so that
you can experience stereophonic sound, and the sound is
played through 2 speakers.
Partial Color Blind Person Mode
Using this function, a user can adjust the red, green or blue
colors according to the preferences of the partially color-blind
person so that he or she can view the clearest possible picture
on the screen.
Analog Broadcasting
Analog Broadcasting is a television broadcasting signal transmitted according to the NTSC standard.
ANTENNA IN Port
The port connecting the TV aerial via a coaxial cable. It is generally used for watching public broadcast programs.
English Caption
A function that displays English captions or text information
included in the broadcast signal or video tape. You can use this
function for your English studies by watching AFKN or CC
marked video tapes.
Video/Audio Ports
You may experience poor visual and audio quality when watching a video tape on channel 3 or 4 through the antenna cable.
You can experience better visual and audio quality by connecting the TV and VCR through the Video/Audio ports. The video
port is in yellow, and the audio ports are in white and red.
Wide Screen
Wide Screen refers to a screen that is horizontally longer than
a conventional TV screen.
While the aspect ratio of a normal TV is 4:3, that of a wide
screen is 16:9.
Page 46
Reference Information
14-4Samsung Electronics
External Input
External Input is a connected video device such as a VCR,
camcorder, DTV receiver, DVD, etc. as a video source.
Satellite Broadcasting
Satellite Broadcasting transmits programs via satellite so that a
program can be viable in all areas at a high visual and sound
quality. Approximately 100 channels including public broadcast
channels are provided. To view a satellite broadcast, you have
to install an additional receiver.
Wire Broadcasting
Wire Broadcasting refers to movie, entertainment and educational programs transmitted by a broadcasting station within a
hotel or school.
Audio Multimix
Audio Multimix provides 2 audio languages when foreign
movie, drama, news, etc. are broadcast. You can select and listen to one of the supported languages or you can select and
listen to both languages simultaneously.
After-Image Protection
Using this function, a user can configure the options necessary
for protecting the PDP TV screen.
Power Saving Mode
This function adjusts the screen brightness according to the
ambient brightness so as to conserve power.
Component Port
The Component Port transmits a separate luminance signal as
well as the green, blue, and red color signal and provides the
best quality of all video connection types.
Cable Broadcasting
Cable Broadcasting transmits programs via cable instead of via
the air. To view cable broadcasting, you have to subscribe to
your local cable broadcast service provider and install an additional receiver.
Tuner
A device that enables the selecting of specific channel frequencies for TV or radio.
Panorama Screen
This refers to a screen that corrects the picture distortion due
to a screen size mismatch on the TV.
Progressive Scan
Progressive scan displays the entire frame in a single sweep
so as to provide clearer and sharper visual quality.
DVD (Digital Versatile Disc)
DVD is a large capacity storage media that can store multimedia content such as video, games, audio applications, etc.
using MPEG-2 video compression technology on a CD sized
disc
DRC
This is a sound quality enhancement function that automatically
controls audio output so as to prevent sound quality distortion
even at loud volumes and correct the sound to the speakers so
that you can listen to the sound at the original sound quality.
DVI (Digital Visual Interface) Port
A DVI interface is a standard for high definition television connectivity. It provides a clear picture on the screen using TMDS
which minimizes video signal loss.
DVI-D Cable
A type of DVI connector. Using this cable you can only transmit
digital signals.
DVI-I Cable
A type of DVI connector. Using this cable you can transmit
either digital or analog signals.
HDMI
HDMI (High-Definition Multimedia Interface) is the first industrysupported, uncompressed, all-digital audio/video interface.
HDMI provides an interface between any audio/video source,
such as a set-top box, DVD player, and A/V receiver and an
audio and/or video monitor, such as a digital television (DTV).
HDMI supports standard, enhanced, or high-definition video,
plus multi-channel digital audio on a single cable. It transmits
all ATSC HDTV standards and supports 8-channel digital audio,
with bandwidth to spare to accommodate future enhancements
and requirements.
PCM
PCM (Pulse Coded Modulation): This refers to an uncompressed digital signal. Use this for an AV amplifier that does not
support 5.1 channels when connecting the audio output via
optical or coaxial cable.
SRS TruSurround XT
This function provides 5.1 channel surround sound using 2
channel speakers when inputting a stereo audio signal.
Page 47
Reference Information
Samsung Electronics14-5
VESA Plug & Play
This function enables the automatic recognition of devices
when connecting the TV to the computer without additional settings.
S-VIDEO IN Port
This is called super video. S-Video is a type of video signal
which has the video luminance and the color signal separated
in order to provide better visual quality.
VHF/UHF
VHF refers to TV channels 2 to 13, and UHF refers to TV channels 14 to 69.
Pixels, Resolution
The pixels are the number of small dots that make up the TV screen. The resolution represents the number of pixels on a screen.
For example, if the resolution of a TV is 852x480, it means the width of the screen consists of 852 pixel columns and the height of
the screen consists of 480 pixel rows. In this case, the total number of pixels on the screen is 408,960. The more pixels there are,
the higher the visual quality that can be achieved because the picture on the screen is displayed with more pixels and therefore
with more detail.
Gradation, Color Depth
Gradation describes the number of gradual brightness levels. Since all information is represented by binary numbers in a digital
system, the Gradation is determined by the number of bits used to represent the brightness levels of a pixel on the TV screen. For
example, if a pixel is represented by 8 bits, the Gradation is 28 or 256. Since a TV uses the three primary colors of light, R, G and
B, the number of possible colors for a pixel is 256 x 256 x 256, 16,777,216, or 16.7 million colors. If 12 bits are used for a pixel, the
gradation is 212 or 4096 for a color. Since three colors R, G and B are used, 4096 x 4096 x 4096 or 68.7 billion colors are supported per pixel. Since 68.7 billion colors are far more than 16.7 million colors, the picture will be displayed by far more abundant and
natural colors using a 12 bit pixel. That is, since Gradation means the number of brightness levels, color represented by 4096 levels appears more natural than color represented by 256 levels.
Contrast
The contrast is the ratio of brightness of the brightest color to the darkest color. The contrast is calculated by dividing the brightness of the brightest color by the brightness of the darkest color. For example, if the brightness of the darkest color is 1 and the
brightness of the brightest color is 3000, then the Contrast is 3000/1 or 3000. A higher contrast means that a dark color is displayed darker and bright color is displayed brighter so that the screen contrast can be easily distinguished. The contrast differs
from the Gradient which means the number of brightness levels.
Therefore, if someone says that a 5000:1 contrast displays a color by 5000 levels, he is confusing Contrast with Gradation.
Brightness
Brightness is the brightness per unit screen area, the unit for brightness is candela (cd). For example, 1000cd/m2 means the
brightness that is measured when 1000 candles are lit within 1 square meters area.
852
480
42SD = 409K Pixels
Page 48
Reference Information
14-6Samsung Electronics
Color Reproductivity
Each color displayed on the TV screen is implemented by a pixel on color coordinates which have an X and Y axis.
For example, when a pixel on the X coordinate 0.65 and the Y coordinate 0.74 is displayed as a
color and it becomes visible on the TV screen. While the possible color coordinate area is very
wide, the color coordinate area of the signal broadcast from a broadcast station is smaller than
that of possible color coordinates. Moreover, a TV provides a smaller color coordinate area than
that of the signal from the broadcasting station even though the size of the color coordinate area
varies depending on the TV model. In general, Color Reproductivity is used as follows:
The Color reproductivity of a TV is a certain % of NTSC. This means the TV displays that
particular % of the color coordinate area of the NTSC signal broadcast by the broadcasting
station. In general, a CRT TV provides the highest functional color reproductivity.
Page 49
Troubleshooting
Samsung Electronics6-1
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 cable connection or a connection is too loose.
- 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, Y Main Board, and between the
Logic Boards.
6. Troubleshooting
6-1 First Checklist for Troubleshooting
Page 50
Troubleshooting
6-2Samsung Electronics
6-2 Checkpoints by Error Mode
6-2-1 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 power of the unit seems to be out of order.
Major Checklist
The SMPS relay or the LEDs on the front panel do not work when connecting the power cord if the cables are improperly
connected or the Main Board or SMPS is out of order. In this case, check the following:
- Check the internal cable connection status inside the unit.
- Check the fuses of each part.
- Check the output voltage of SMPS.
- Replace the Main Board.
Troubleshooting
Procedures
Are the AC IN socket connector
and the Main SMPS CN800 connected?
Is the Fuse (F101) of the Main SMPS
Power Input Part blown?
Check Main SMPS 804-1
Pin 10 : STB 5V = 5V
Pin 8 : PS-ON = 0V
Replace the Main Board
Connect The AC IN socket connector
and the Main SMPS CN800
Replace the Main SMPS
Replace the Main SMPS
Page 51
Troubleshooting
Samsung Electronics6-3
6-2-2 When the unit is repeatedly turned on and off
Symptom- The SMPS relay is repeatedly turned 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 ASSYs by connecting the cables one by
one.
Troubleshooting
Procedures
Caution
When separating and connecting the cables such as CN809 of the Main SMPS, CN1, CN2, CN3, CN4 and CN5 of DC-DC
SMPS, CN of the X Main Board, and CN of the Y Main Board, a spark may be generated by the electric charge of the high
capacity capacitor. Therefore, wait some time after separating the power cord from the unit.
Does the symptom continue
after connecting the power and
removing CN809 cable from
the Main SMPS?
Does the symptom continue
when separating the CN804-1
and CN803 cables from the
Main SMPS and shorting pins
4 and 5 of the CN804-1
Connector?
Replace the Main SMPS
Replace the Main Board
Does the symptom continue when
connecting the power after
connecting the CN809 cable and
removing the CN2, CN4 and CN5
cables from the DC-DC SMPS?
Reconnect all cables.
Does the symptom continue when
connecting the power after the CN4
cable to the DC-DC SMPS?
Does the symptom continue when
connecting the power after CN2
to the DC-DC SMPS?
Does the symptom continue when
connecting the power after
removing CN810 from the
Main SMPS?
Replace the DC-DC SMPS
Replace the X Main Board
Replace the Y Main Board
Replace the
Logic Main Board
Page 52
Troubleshooting
6-4Samsung Electronics
6-2-3 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 normal but the X, YMain Board, Logic Board, or Y Buffer Board is out of order.
- The output voltage of the Main SMPS or the DC-DC SMPS is out of order.
- 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 CN809 of the Main SMPS, CN1, CN2, CN3, CN4 and CN5 of the DC-DC
SMPS, CN of the X Main Board, and CN of the Y Main Board, a spark may be generated by the electric charge of the high
capacity capacitor. Therefore, wait some time after separ ating the power cord from the unit.
Are the Vs and Va voltages
normal after removing the
CN809 cable from the
Main SMPS?
Is the output voltage of the
DC-DC SMPS normal when
reconnecting the CN809 cable
and removing the CN2, CN4
and CN5 cables from the
DC-DC SMPS?
Replace the Y Main Board
Replace the X Main Board
Replace the Logic Main Board
Replace the Main SMPS
Replace the DC-DC SMPS
Replace the Y SCAN Board
Page 53
Troubleshooting
Samsung Electronics6-5
6-2-4 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 out of order.
- Speaker defect.
- When setting the volume to 0 (Nonsense).
Troubleshooting
Procedures
Is the cable connection between
the Main Board and the speaker
properly connected?
Is the output voltage of SMPS
normal? (CN803 #5)
Is the speaker output terminal
of the Main Board normal?
Replace the Speaker
Connect the cable properly or
replace the cable, if necessary.
Replace the Main SMPS
Replace the Main Board
Page 54
Troubleshooting
6-6Samsung Electronics
6-2-5 No Video
Symptom - Anormal/cable network analog broadcast screen is blank or abnormal.
Major Checklist
- Check the antenna connection settings (Antenna 1 - Normal/Cable/DTV, Antenna 2 - Only for DTV)
- Check the tuner output signal (CVBS).
- Check the power input of the Main board.
Troubleshooting
Procedures
Is the antenna connection setting
properly configured?
Configure properly
Check CN101 pin2 for +33V
Replace the Main Board
Replace the Main SMPS
Page 55
Troubleshooting
Samsung Electronics6-7
6-2-6 Main SMPS Troubleshooting
Normal
Power ON
STD_5V
Abnormal
Check the U101, D108
VA
Normal
Normal
PFC
Abnormal
VS
Abnormal
Multi
Abnormal
Check the U201, Q203, Q204
Check the U501
Abnormal
Check the U601
Check the Q401, Q402
Normal
Check the Other board (Image Board or Driver Board) or Cable.
Page 56
Troubleshooting
6-8Samsung Electronics
Condition NameDescriptionRelated Board
No Voltage OutputOperating Voltage don't existPSU
No DisplayOperating Voltage exist, but an Image doesn't exist on screen Y-MAIN, X-MAIN, Logic Main, Cable
Abnormal DisplayAbnormal Image (not open or short) is no screenY-MAIN, X-MAIN, Logic Main
Sustain OpenSome horizontal lines don't exist on screenScan Buffer, FPC of X/Y
Sustain ShortSome horizontal lines appear to be linked on screenScan Buffer, FPC of X/Y
Address OpenSome vertical lines don't exist on screenLogic Main, Logic Buffer, TCP
Address ShortSome vertical lines appear to be linked on screenLogic Main, Logic Buffer, TCP
6-2-7 Drive Board Troubleshooting
1) Troubleshooting Summary
Page 57
Troubleshooting
Samsung Electronics6-9
2) Troubleshooting Procedure in Abnormal Conditions
① No Display (Operating Voltage exist, but an doesn't exist on Screen)
▶ No Display is related with Y-MAIN, X-MAIN, Logic Main and so on.
This page shows you how to check the boards, and the following pages show you how to find the defective board.
No Display
[ Logic Main ]
LED Blinks
Check the LED
YESNO
Check if internal is
Check if any address
data output is detected
Default Black
[ Y-MAIN ]
Check necessary points
[ Logic Main ]
Check if power is supplied
YESNO
operation
MICOM operation
Check the ASIC
Control Signal output
Check if the data
and control signals
between DDR & ASIC
( 5V, 3.3V )
Check the
are normal
[ X-MAIN ]
Check necessary points
Check the
power connectivity
Check the FUSE
Check the
input voltage
If the input voltage is
abnormal, replace the
PSU and check it
again as this indicates
a PSU output error
[ X-MAIN ]
Check several points
FUSE
OK
FET/
DIODE
OK
X-MAIN
Normal State
OPEN
Replace the Board
SHORT
Replace the Board
F5001 for VDD
F5002 for Vs
F5004 for VCC
F5005 for OUT_L
Q5009~Q5021
D5005, D5007
D5008
[ Y-MAIN ]
Check several points
FUSE
OK
FET/
DIODE
OK
Y-MAIN
Normal State
OPEN
SHORT
Replace the Board
Replace the Board
F4001 for VCC
F4002 for Vs
F4004 for VDD
F4005 for Ve
Q4002~Q4003
Q4011~Q4016
D4004
D4006~D4008
Page 58
Troubleshooting
6-10Samsung Electronics
② Abnormal Display(Abnormal Image is on Screen.(except abnormality in Sustain or Address)
▶ Abnormal Display is related with Y-MAIN, X-MAIN, Logic Main and so on.
This page shows you how to check the boards, and the following pages show you how to find the defective board.
Abnormal
Display
F5001 for VDD
F5002 for Vs
F5004 for VCC
F5005 for OUT_L
[ Logic Main ]
LED Blinks
( action of Vsync )
YES
Replace the Board
[ Y-MAIN ]
Check several points
FUSE
OK
[ Logic Main ]
Observation of
abnormal display
Regular
abnormal
pattern
OPEN
Check necessary points
NO
Replace the Board
[ Y-MAIN ]
Logic Main
Normal State
Replace the PDP
F4001 for VCC
F4002 for Vs
F4004 for VDD
F4005 for Ve
[ X-MAIN ]
Check necessary points
[ X-MAIN ]
Check several points
FUSE
OK
OPEN
Replace the Board
Q5009~Q5021
FET
OK
Y-MAIN
Normal State
SHORT
Replace the Board
Q4002~Q4003
Q4011~Q4016
FET
OK
X-MAIN
Normal State
SHORT
Replace the Board
Page 59
Troubleshooting
Samsung Electronics6-11
③ Sustain Open (some horizontal lines don't exist on screen)
④ Sustain Short (some horizontal lines appear to be linked on Video)
[ Y-FPC ]
Sustain Open
After Changing Y-buffer,
recheck the status
OK
Done
(Defect is from Y-buffer)
NG
Replace the Panel
There a defect on FPC
[ Y-FPC ]
(Discharging in unwanted Scan line)
Sustain Short
After Changing Y-buffer,
recheck the status
OK
Done
(Defect is from Y-buffer)
NG
Replace the Panel
There a defect on FPC
Page 60
Troubleshooting
6-12Samsung Electronics
⑤ Address Open, Short(some vertical lines don't exist on screen)
▶ Address Open and Short is related with Logic Main, Logic Buffer, FFC, TCP film and so on.
This page shows you how to check the boards, and the following pages show you how to find the defective board.
[ Logic Main ]
Address Open/Short
Check the LED operation
Check if the internal mode
screen is normal
OK
Reload the data onto the
MICOM and recheck it
OK
Check the detailed waveform
and control the signal waveform
DONE
NG
Check if a specific TCP Block
screen is displayed abnormally
Check the
Video Board
OK
Check if there is an open or
short circuit on the Buffer Board
and the Logic Main address
data output section.
Check the FFC connection status
NG
Address Buffer (E or F) /
OK
NG
input voltage (Vref)
OK
Replace Logic Main /
FFC
Replace the Panel
Check the DDR
NG
Check the DDR Vref
input power and the
Voltage Divider
resistance
NG
NG
Page 61
Troubleshooting
Samsung Electronics6-13
6-3 Troubleshooting Procedures by ASS'Y
NoAssyDescriptionMajor Symptoms
1 ASSY PCB P-SMPSMain SMPSNo power, Blank screen, the Relay repeats On and Off.
2 ASSY PCB P-SMPSDC-DC SMPSBlank screen, the Relay repeats On and Off.
3 ASSY PDPMODULE P-X MAIN BOARDX Main BoardBlank screen
4 ASSY PDPMODULE P-X MAIN BOARDY Main BoardBlank screen
5 ASSY PDPMODULE P-LOGIC MAINLogic BoardBlank screen, Screen noise
6 ASSY PDPMODULE P-Y MAIN SCAN BUFFERYScan BoardRow Bar screen is blank
7 ASSY PDPMODULE P-ADDRESS E BUFFERAddress E Buffer Board Corresponding Buffer Board block screen is blank.
8 ASSY PDPMODULE P-ADDRESS F BUFFERAddress F Buffer Board Corresponding Buffer Board block screen is blank.
9 ASSY PCB MISC-MAINMain BoardNo Power, Abnormal screen for each input source, PIPscreen trouble, Sound trouble
10 ASSYBOARD P-FUNCTIONFunction Key BoardThe side function key does not work properly
11 ASSY BOARD P-POWER&IRPower Button BoardThe remote control does not work properly, the LED does not work properly.
Page 62
6-14Samsung Electronics
MEMO
Page 63
Block Diagram
Samsung Electronics7-1
7. Block Diagram
7-1 Overall Block Diagram
LOGIC CONTROL
R-Data
DATA_R
8,10,12 or 1 3Bi ts
8,10.12 or 1 3Bi ts
8,10,12 or 1 3Bi ts
8Bits
G-Data
DATA_G
8Bits
B-Data
DATA_B
8Bits
DCLK
DCLK
VSYNC
Vsync
HSYNC
Hsync
DEN
Enable
LVDS
Interface
Input Data Processor
Display
DRAM
Data
Data Controller
Driver
Timing Controller
Timing
Driver
Scan
Timing
Driver
Row
Generator
YPulse
DRIVER CIRCUIT & PANEL
1024× 76 8 Pixels
1024× 3× 768 Cells
Column Driver
3V3
Vcc
Vset Vsc
VsVa
Ve
Generator
XPulse
Image Scaler +
Video Decoder
Reference
-3V3 : Voltage for Logic Control
-Vcc : Voltage for FETdriver
-Va : Voltage for address pulse
-Vs : Voltage for sustain pulse
-Vsc : Voltage for scan pulse
-Ve : Voltage for X ramp pulse
-Vset : Voltage for Y ramp pulse
Micom
Page 64
Block Diagram
7-2Samsung Electronics
CN804-1(Main SMPS)
↔
CN102(Main Board)
Pin No.Signal
15.3V
2RTN
3N/C
4N/C
5RTN
6RTN
712V
8PS_ON
9RTN
10STBY
11FAN_ON
12FAN_D
CN803(Main SMPS)
↔
CN101(Main Board)
Pin No.Signal
16.5V
2RTN
312V
4RTN
518Vamp
618Vamp
7RTN_amp
8RTN_amp
9Vt
10RTN
CN810(Main SMPS)
↔
CN2013(Logic Board)
Pin No.Signal
1STBY
2VS_ON
3N/C
4PS_ON
5RTN
65.3V
7RTN
8RTN
95.3V
105.3V
CN2(DC-DC SMPS)
↔
CN5007(Y B'D)
Pin No.Signal
1Vs
2Vs
3RTN
4RTN
5Vset
6RTN
7Vscan
8RTN
9Vg
10D5.3V
CN4(DC-DC SMPS)
↔
CN4001(X B'D)
Pin No.Signal
1D5.3V
2Vg
3RTN
4RTN
5Ve
6RTN
7RTN
8Vs
9Vs
CN6(DC-DC SMPS)
↔
CN2509(E-Buffer)
Pin No.Signal
1RTN
2N.C
3D5.3V
4N/C
5Va
Page 65
Block Diagram
Samsung Electronics7-3
7-2 Partial Block Diagram
7-2-2 DC-DC SMPS Block Diagram
7-2-1 Main Board Block Diagram
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Transformer
Auxiliary
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Auxiliary
Power
Transformer
Auxiliary
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Rectification
Block
Feedback
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Rectification
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Feedback
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Feedback
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Vset Output
Ve Output
Page 66
Block Diagram
7-4Samsung Electronics
7-2-3 Module Driver Board Block Diagram
1. Y Main Board
2. X Main Board
Page 67
Block Diagram
Samsung Electronics7-5
7-2-4 Logic Board Block Diagram
Y-MAIN
CONTROL
SIGNAL
5 Pin (uart)
TX, RX
R,G,B : 24bit
CLK 1, 2
BLK, POC, STB
CSE, CE1, CE2
30 Pin Connector20 Pin Connector
LVDS SIGNAL
(8~12bit)
10 Pin (Power)31 Pin LVDS
RELAY_EINT
Vs-ON
X-MAIN
CONTROL
SIGNAL
DDR
(MA)
DATA : 32bit
ADDR : 12bit
DQS, CLK, nCLK
RESET
DDRDRIVE
(FA)
SPS-NIRB
(ASIC 816P)
DDR
ASIC
nRESET
CONTROL
SIGNAL
(MB)
MICOM
R,G,B : 24bit
CLK 1, 2
BLK, POC, STB
CSE, CE1, CE2
50 Pin ConnectorFM75
50 Pin Connector
7-2-5 Power Block Diagram
Page 68
7-6Samsung Electronics
MEMO
Page 69
Circuit Description
Samsung Electronics13-1
13. Circuit Description
13-1 Power ON/OFF Signal Timing Sequence
A
µ
1. When connecting the AC power cord, Stand-By 5V from the Main SMPS is supplied to the Main Board (Pin 3 of CN1002 of Main
Board).
2. When pressing the Power button on the remote control or on the main body, PS_ON (Pin 5 of CN1002 of Main Board)
changes from High to Low.
3. If the PS_ON signal changes to Low, the Main SMPS supplies power to the Main Board and Logic Board, and Va and Vg power
is supplied to the DC-DC SMPS.
4. If the VS_ON signal from the Logic Board changes from Low to High, the Main SMPS supplies VS power to the X and Y Main
Board through the DC-DC SMPS, and the screen displays a picture on it.
70 m Sec.
70 m Sec.
C POWER ON/OFF
Stand-By, (POP Option outputs)
PS_ON (Active Low)
from PS External
(Remote controller ON/OFF)
PFC output
DC OUTPUTS
Va
DC OUTPUTS
D5.3V,A6.5V,12V,Vamp,Vt
OUTPUTS
Vg
VS_ON (Active high)
from P/S External
DC OUTPUT
Vs
DISPLAY ON / OFF
Remote Controller ON
Remote Controller ON
Vca
Vcs
AC POWER OFF
AC POWER OFF
VS_ON
VS_ON
DISPLAY ON
DISPLAY ON
OFF
OFF
Remote Controller ON
Remote Controller ON
VS_ON
VS_ON
DISPLAY ON
DISPLAY ON
Standby step turn-off
for
-processor reset
µ
5 V
5 V
3.4 V
3.4 V
Vg vs. 3.4V
turn-off sequence
Keep Display ‘ON’w/o
display flicker while
3cycle full-dip condition
Page 70
Circuit Description
13-2Samsung Electronics
13-2 Partial Block Description
13-2-1 Main SMPS
1. Outline (PDP 42inch/50inch SMPS)
Considering various related conditions, the switching regulator with good efficiency and allowing for its small size and light weight
was used as the power supply for PDP 42inch/50inch, VS requiring high power consumption Asymmetrical Half Bridge converter
and flyback converter. To comply with the international harmonics standards and improve the power factor, active PFC(Power
Factor Correction) was used to rectify AC input into +400V DC output, which in turns used as input to the switching regulator.
2. Input
The power supply shall be capable of supplying full rated output power over free voltage ranges that are rated 100 VAC - 240 VAC
RMS nominal. Operating voltage : 90 VAC - 264 VAC
The power supply must be able to start up under peak loading at 90V AC. The power supply shall automatically recover from AC
power loss. (Note that nominal voltages for test purposes are considered to be with +/- 1.0V of nominal).
STD_5V & Vpr2(3.3V) is a SELV standby voltage that is always present when AC mains voltage present.
3. Output
① Over Voltage Protection
The over voltage sense circuitry and reference shall reside in package that are separate and distinct from the regulator control
circuitry and reference. No single point fault shall be able to cause a sustained over voltage condition on any of all outputs.
The supply shall provide latch-mode Over Voltage Protection as defined below.
Output NameOutput VoltageOutput Current(Max.)Using in PDP Driving
VS+190V ~ 220V (210V)2.0ASustain Voltage of Drive Board
VA+60V ~ 80V (70V)3.0AAddress Voltage of Drive Board
D5.3V+5.3V5.0A
A6.5V+6.5V3.0A
FAN_9V+9V0.2A
VG+15V1.0A
D12V+12V1.5A
A12V+5.3V0.5A
18VAMP+18V2.5AAmp Voltage of Audio Board
VT+33V0.006A
STD_5V+5V1.0AStandby for Remote Control
ParameterMinUnit
VS(210V)250 ~V
VA(70V)100 ~V
VCC(+5.3V)6.8 ~V
Page 71
Circuit Description
Samsung Electronics13-3
② Short Circuit and Over current Protection
An output short circuit is defined as output impedance of less than 300mohms. The power supply shall shutdown and latch off for
shorting VS DC rails to return. Shorts between main output rails and STD_5V shall not cause any damages to the power supply.
The power supply shall either shutdown and latch off for shorting is removed, the P/S shall recover. The power supply shall be
capable of withstanding a continuous short-circuit to the output without damage or over stress to the unit (components, PCB
traces,connectors,etc.) under the input conditions specified in Section 3 above. Current Protection as defined below.
OutputOver Current LimitUnit
VS(210V)20A, Constant Current.(TBD)A
VA(70V)10A, Constant Current.(TBD)A
Output except Vs,VaNo damage (Auto Recovery or Shut down.)A
Page 72
Circuit Description
13-4Samsung Electronics
ItemNameExplanation
①
Y ConnectorThe connector to output the control signal for the Y drive board.
②
LVDS Connector
The connector to receive the RGB, H, V, DATAEN and DCLK signals that have been LVDS
encoded through the Main board.
③
Power ConnectorThe connector to receive power (5V, 3.3V) for the Logic board.
④
X ConnectorThe connector to output the control signal for the X drive board.
⑤
ASIC CHIPThe main processor that generates and outputs the logic drive signal and the address data.
⑥
DDR MEMORY (MENCON)The Memory to restore Address output data.
⑦
DDR MEMORY (Frame Delay)The Memory to restore FCR data.
⑧
JTAG PORTThe port to communicate uCOM.
⑨
Initial image option PIN
Initial image select F/W or BLACK :
Jumper Yes : or Full White, Jumper No : Black
⑩
Micom Loading 5Pin Connector
or
Uart Connector
The connector to load the Micom drive program. The program is loaded by connecting to
the GA-WRITER.
Connector that loads and controls 512K data, and connects kiss can Board
⑪
ARM-PROCESSORIC block Control-signal to drive logic main.
⑫
Buffer ConnectorThe connector to output the address data and the control signal to the E-buffer board.
⑬
Operating Status LED
The LED that shows whether the Sync and Clock signal is properly supplied to the logic
board. (Normal Status: Blinks at 0.5 second intervals)
⑭
Buffer ConnectorThe connector to output the address data and the control signal to the F-buffer board.
⑮
V-TOGGV-SYNC output pin.
4 3
2 1
4 3
2 1
4 3
2 1
13-2-2 PDP Module
1. Logic Board
■ A name of main part of Logic Board and vocabulary.
Page 73
Circuit Description
Samsung Electronics13-5
■ Normal Waveform
When the Operating LED blinks normally (at 0.5 second intervals), which indicates the normal operation of the PDP Set and Logic
Board, and the V-SYNC and data output signals are normal.
If the set is out of order, perform troubleshooting according to the procedures below.
1) Visual Inspection : Check if the Operating LED on the Logic Main blinks at a 0.5 second interval.
▶ If the Operating LED blinks too fast or too slow, you have to reload the data onto the MICOM, as this indicates abnormal
data processing in the MICOM. To load the data, supply power to the module and load the data using GA-WRITER.
2) If no problem has been found through the visual inspection, check if the drive waveforms and the address data output are
normal. (Check Point: Check the DAMPING R-NET output of each data output terminal.)
▶ If no drive waveform or address output signal is detected, load data onto the MICOM according to the procedures described
above, as this indicates a MICOM data error.
▶ If data output is detected but is abnormal, it indicates a hardware short-circuit if measured for the drive waveform, or it
indicates abnormal data output due to the abnormal operation of the DDR memory caused by the abnormal Vref voltage if
measured in the address data. Abnormal data output due to the abnormal operation of the DDR memory or a short circuit on
the board, which may be caused during the ass'y process, causes the screen to be abnormally displayed. Therefore, you
have to conduct a short test for each part.
▶ If the Vref voltage (Voltage Divider Voltage) is lower than 1.25V, check the resistance of the resistance output part and check
if the circuit status is normal. This applies the voltage and the proper Vref voltage and results in the screen being properly
displayed.
▶ If the screen is abnormally displayed, even though the Vref voltage is normal, find any abnormal points by conducting a short
test. If a short circuit is found and it is repairable, repair it. If a short circuit is internal, replace the board.
▶ The following waveform appears when the V-sync and address data are output properly.
< Normal V-SYNC Output Waveform >
< Normal Address Data Output Waveform >
■ About Logic Board
The Logic Board consists of a Logic Main board, which processes the video signal input through LVDS and creates the address
driver output and XY drive signals, and a Buffer board, which buffers the output signal and outputs the signal to the Address Driver
IC (TCP IC).
Logic BoardFunctionRemark
Logic Main
- Video Signal Processing (W/L, error diffusion, APC, FCR)
Built-in LVDS Application and 1 ASIC Chip
- Outputs the Address Driver Control and Data Signals to the Buffer board
- Outputs the XY Drive Board Control Signal
- Major Drive Voltage Monitoring (MICOM Circuit Block)
: Detects abnormal voltage applications and protects drive circuits
- Temperature Induced Operating Mode
(Low Temperature/Room Temperature/High Temperature)
: Optimization of discharge by temperature
Buffer Board
E Buffer Board Outputs data and control signals to the bottom left TCP IC.
Single Scan
F Buffer Board Outputs data and control signals to the bottom right TCP IC.
Page 74
Circuit Description
13-6Samsung Electronics
2. X, Y Control Block
■ Drive Circuit Definition
The Drive Circuit is a circuit that generates a waveform (high-voltage pulse) for the X and Y electrode group of the panel's external
port so as to control the panel. The high-voltage switching pulse is generated through the combination of the IC HYBRID (Drive
block + IGBT) and FET.
■ Drive Circuit Mechanism
A picture is displayed on the PDP by applying voltage to the X, Y and ADDRESS electrodes of each pixel according to the appropriate condition. The drive waveform applied to 42HD V4 is of the ISSS (ISSS: Interweaving Scan and Selective Sustain with Scan
IC) type and has IDS (InDependent Sustain) in the Scan section unlike the existing ADS. Discharges within a PDP pixel can be
classified into 3 types:
① Address Discharge: To form a wall voltage within the pixel by giving information (applying DATA voltage) to the pixel to be lit.
② Sustain Discharge: Sustain Discharge is a display section that voluntarily maintains the discharge of the pixels whose wall
voltage has been formed by the Address Discharge. (Optical output for displaying a picture is generated).
③ Erase Discharge: To selectively perform Address Discharge for each pixel, all pixels on the panel should be in the same status
(the wall electric charge status and space electric charge status must be the same). Therefore, the Erase
Discharge section is an important component for guaranteeing the drive margin, and is implemented by
various methods such as applying a log waveform. However, the current 42HD V4 has adopted a wall voltage
control through an RA (Repeated Auto-quenching) reset that separates the discharge area and performs
switching to perform an efficient erase operation, while the gradient was the same in the RAMP section in the
existing approach.
1) Address Discharge
A discharge that is caused by the difference between the plus electric potential (Va apply voltage of 65~70V + Positive Wall
Charge) of the electrode and the negative electric potential (Applied GND Level + Negative Wall Charge) of the Y electrode. The
Address discharge forms a wall voltage within the pixel to display color (to be discharged) before the Sustain Discharge period.
That is, the pixel whose wall charge has been formed by the Address Discharge forms a Sustain Discharge vis the following
Sustain pulse.
2) Sustain Discharge
A Sustain Discharge is a Self-Sustaining Discharge formed by the accumulation of the electric potential of the Sustain pulse (generally 200 ~ 210 Volt) alternating over the X and Y electrodes during the sustain period, and the wall charge depending on whether
the pixel has previously been discharged or not. That is, it is controlled by the memory characteristics, one of the basic characteristics of the AC PDP (in that the past operating conditions determine the current status). That is, if a wall voltage exists on the pixel
(if the pixel is on), a discharge is formed again because the applied voltage, which is the sum of the following applied Sustain voltage and the wall voltage, is higher than the discharge threshold voltage. If no wall voltage exists on the pixel (if the pixel is off), a
discharge will not occur because the Sustain voltage is not higher than the discharge threshold voltage. The Sustain Discharge
period is the period for generating actual optical output so as to display a picture on the PDP screen.
3) Erase Discharge
The purpose of a Reset (Erase) Discharge is to create uniformity of the wall voltage within all panel pixels. It evens the wall voltages regardless of the Sustain Discharge in the previous stage. The Erase Discharge has to remove the wall voltage introduced by
the Sustain Discharge by supplying ions or electrons by a discharge. When the wall voltage is removed through a discharge, the
time when the reverse polarity is applied to the wall voltage (fine width erasing) is to be limited or ions or electrons are to be supplied by a weak discharge (low voltage erasing) so as to prevent a wall charge in reverse polarity.
There are 2 known weak discharge (low-voltage) erase methods. 1) A log waveform adopted by F company and 2) a weak erase
discharge via a ramp waveform adopted by Matsushita and other companies. Both methods control the externally applied voltage
by the difference of the wall voltage of the pixel by applying the rising gradient of the erasing waveform slowly, because the discharge begins when the sum of the existing remaining wall voltage and the rising waveform voltage exceeds the drive threshold
voltage. In addition, a weak discharge is introduced, because the applied voltage is low.
Page 75
Circuit Description
Samsung Electronics13-7
■ Requisite Components Necessary for Drive Board Operation
1) Power
- Supplied from the power board. The optimal value may differ from the following:
a) Vs: 200V - Sustain
b) Vset: 190V - Y Rising Ramp
c) Ve: 110V - Ve bias
d) Vscan : -190V - Scan low bias
e) Vsc_h : -70V - Scan high bias (Created by the DC-DC power block of the Y Drive board)
f) Vdd: 5V- Logic signal buffer IC
g) Vcc: 15V- Gate drive IC
2) Logic Signal
- Supplied by the Logic board
- Gate signal of each switch
■ Drive Circuit Architecture and Function Description
- Description of the function of each board
1) X Drive Board
This is connected to the X port part of the panel. 1) Sustain voltage waveform (including ERC) is output, and 2) Ve bias in the Scan
section is maintained.
2) Y Drive Board
This is connected to the Y port part of the panel. It outputs 1) Sustain voltage wave form (including ERC), and 2) Y Rising, Falling
Ramp waveform, and maintains 3) Vscan bias.
3) Y Buffer Board
A board, which applies the Scan waveform to the Y terminal block, consists of 12 Scan Driver ICs (TI SN755870: 64 Outputs).
Power B'd
Y-Buffer
Y Drive B'd
- Sustain Pulse
(Energy Recovery)
- Rising Ramp Pulse
- Falling Ramp Pulse
- Vscan Pulse
Y Pole Terminal
(6 Block)
Logic E-Buffer
Logic B'd
Logic F-Buffer
X Pole Terminal
(2 Block)
X Drive B'd
- Sustain Pulse
(Energy Recovery)
- Ve Bias
Page 76
Circuit Description
13-8Samsung Electronics
■ Drive Waveform Specifications
- Drive Waveform
- Description of the function of each pulse
1) Y Preset RA Pulse
This is supplied to the first sub-field and erases the discharge status of the previous subfield.
2) Y Main RA Pulse
During the Y Rising Ramp section, approximately 300V~350V (Vscan-h + Vset) of external voltage is supplied to the Y electrode,
and a weak discharge is started when each gap voltage is equal to the discharge start voltage. While maintaining the weak discharge, as a whole, negative wall charges are accumulated on the Y electrode and positive wall charges on the X electrode and
the address electrode.
During the Y Falling Ramp section, the negative wall charges accumulated on the Y electrode by the approximately 105V of X bias
are used to erase the positive wall charges on the X electrode, and the address electrode maintains most of the positive wall
charges accumulated during the (0V) Rising Ramp section preparing for the next address discharge.
3) Y Scan Pulse (Odd/Even)
A scan pulse classifies the Y electrode into Odd and Even lines and selects FPC output electrodes sequentially (one line-at-atime). At this time, Vscan is called the Scan Bias Voltage.
A Vscan voltage of approximately -175 Volt (Vsc_1) is supplied to the electrode lines. For the other lines, -56 volt (Vsc_h is higher
than Vscan-l by 120V) is supplied. However, negative wall charges are accumulated on the Y electrode by the Ramp pulse, and
positive wall charges are accumulated on the address electrode, and the voltage applied to the cells, to which the Address pulse
(70V~75V) has been applied, becomes higher than the discharge voltage. An address Discharge occurs as a result. Since the
Scan and Data pulse is applied one line at a time as above, the address time of PDP is very long.
4) IDS Pulse (InDependent Sustain Pulse)
Since an Odd Scan is performed first, the Odd line output sustains optical twice during the IDS section. At this time, a Sustain
Discharge does not occur for the Even line because the Even line is not scanned.
5) CPS Pulse (ComPare Sustain Pulse)
By floating the Odd line that caused the Sustain Discharge in the IDS section to the Vscan-h level, and introducing the Sustain
Discharge only for Even lines, it compensates for the optical output difference between the Even and Odd lines.
6) CMS Pulse (ComMon Sustain Pulse)
Actual optical is output during the common Sustain Discharge section.
Page 77
Circuit Description
Samsung Electronics13-9
■ Mechanism of the FET Operation and High-Voltage Switching
Mechanism of the FET Operation
1) When the signal is output to the gate, (positive electric
potential) FET short circuits
(i.e. Conductor of resistance 0)
2) When no signal is output to the gate (GND), FET changes
to an open circuit (i.e. an insulator of resistance ∞).
High-Voltage Switching of the FET Operation
1) When no signal is applied to G1, FET1 is
opened and when the signal is applied to G2,
FET2 short circuits, GND is output via the output
terminal.
2) When a signal is applied to G1, FET1 short cir
cuits and when no signal is applied to G2, FET2
is opened, and 180V is output via the output
terminal.
Page 78
Circuit Description
13-10Samsung Electronics
■ Drive Board Connector Layout
1) X-Main Board
1.Vs
2.Vs
3.DGND
4.DGND
5.Ve
6.DGND
7.DGND
8.Vcc
1
CN4004
- Power
8
CN4002
280mm
CN4001
CN4003
- Signal
140mm
Page 79
Circuit Description
Samsung Electronics13-11
2) Y-Main Board
CN5506
-
Panel
CN5505
-
Panel
CN5504
-
Panel
CN5010
CN5011CN5509
9
CN5010
1
-
Panel
9. Vs
8. Vs
7. GND
6. GND
5. Vset
4. GND
3. Vscan
2. GND
1. Vcc
CN5503
-
Panel
CN5502
-
Panel
CN5501
-
Panel
CN5012CN5508
CN5507CN5004
280mm
CN5013-
signal
190mm
Page 80
Circuit Description
13-12Samsung Electronics
<Voltage Adjustment Specifications>
VsetVsVsc_lVsc_hVeVa
195V200V-190V-70V120V65V
▶ Adjust the drive waveform so that the main reset (rising, falling:40usec) is the same as those in the F/W pattern.
(※ Attachment 1 reference)
120usec
70usec
Rising ramp
Variable register
Falling ramp
Variable register
< Y-Main >
Vsc_h Variable
register
Page 81
Circuit Description
Samsung Electronics13-13
▶ Check that the output of X-Out of the X board follows the waveform of ※Attachment 2 when the power is supplied.
T9698BN96-03352AASSY PDP MODULE P-Y MAIN SCAN42HD,PL42A1S.A
Page 86
Samsung Electronics5-2
MEMO
Page 87
Disassembly & Reassembly
Samsung Electronics12-1
12. Disassembly & Reassembly
12-1 Overhaul Disassembly & Reassembly
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, Y Main
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 cause a flaw in 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.
Part NameDescriptionDescription Photo
Cover
Rear
① Remove 4 screws.( )
: M8,L16,ZPC(BLK),SWRCH18A,WP
② Remove 14 screws.( )
: BH,+,B,M4,L12,ZPC(BLK)
③ Remove 4 screws.( )
: BH,+,S,M4,L10,ZPC(BLK)
④ Remove the ASSY COVER REAR.
12-1-1 Separation of ASSY STAND P-BASE
Part NameDescriptionDescription Photo
Stand
① Remove 4 screws.
: PH,+,WSP,S,M4,L35,ZPC(BLK)
② Pull the ASSYSTAND P-BASE down to remove it from
the unit.
: Please lay the PDP unit face down on a soft surface
when removing the stand.
12-1-2 Separation of ASSY COVER P-REAR
Page 88
Disassembly & Reassembly
12-2Samsung Electronics
12-1-3 Separation of ASSY BRACKET P-TERMINAL
Part NameDescriptionDescription Photo
Bracket
Terminal
① Remove the 2 Hex nuts for the PC input.
: #4-40,L6,NI PLT,C3601,-
② Remove Bracket Terminal.
12-1-4 Separation of ASSY PCB MISC-MAIN
Part NameDescriptionDescription Photo
Main
Board
① Detach all connectors from the Main Board.
② Remove 4 screws.
: PH,+,WWP,M3,L8,NI PLT
③ Remove the Main Board.
12-1-5 Separation of BRACKET-PCB
Part NameDescriptionDescription Photo
Bracket
PCB
① Remove 3 screws.
: BH,+,S,M4,L10,ZPC(BLK)
② Remove the BRACKET-PCB.
Page 89
Disassembly & Reassembly
Samsung Electronics12-3
12-1-7 Separation of SHIELD CASE
Part NameDescriptionDescription Photo
Shield
Case
① Remove 2 screw.
: BH,+,S,M4,L10,ZPC(BLK)
② Remove the Shield Case.
12-1-6 Separation of FILTER-EMI AC LINE
Part NameDescriptionDescription Photo
FILTER
EMI
AC LINe
① Detach connector from Main SMPS.
② Remove 2 screws.
: PH,+,WWP,M3,L8,NI PLT
③ Remove a screw.
: BH,+,S,M4,L10,ZPC(BLK)
④ Remove FILTER-EMI AC LINE.
12-1-8 Separation of ASSY BRACKET P-WALL
Part NameDescriptionDescription Photo
Wall
Bracket
① Remove 8 screws.
: BH,+,B,M4,L12,ZPC(BLK)
② Remove 8 screws.
: BH,+,S,M4,L10,ZPC(BLK)
③ Remove Wall Bracket.
: Please lay the PDP panel face down on a soft surface
when separating front cover.
Page 90
Disassembly & Reassembly
12-4Samsung Electronics
12-1-10 Separation of ASSY BOARD P-POWER&IR
Part NameDescriptionDescription Photo
Power
&
IR Board
① Remove 2 screw.
: BH,+,-,S,M4,L8,ZPC(BLK)
② Remove the Power & IR Board.
12-1-9 Separation of ASSY SPEAKER P
Part NameDescriptionDescription Photo
Speaker
① Remove 4 screws.
: BH,+,WP,B,M4.0,L12,ZPC(BLK),SWRCH18A,-
② Remove the Speaker.
Page 91
Disassembly & Reassembly
Samsung Electronics12-5
12-1-11 Separation of ASSY PCB P-SMPS & SMPS DC-DC
Part NameDescriptionDescription Photo
SMPS
&
SMPS
DC-DC
Board
① Detach all connectors from the Assy PCB P-SMPS.
② Remove 8 screws.
: PH,+,WWP,M3,L8,NI PLT
③ Remove the Assy SMPS PCB.
④ Detach all connectors from the Assy SMPS DC/DC
Board.
⑤ Remove 4 screws.
: PH,+,WWP,M3,L8,NI PLT
⑥ Remove the SMPS DC/DC Board.
: 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.
12-1-12 Separation of ASSY PDP MODULE P-LOGIC MAIN BOARD
Part NameDescriptionDescription Photo
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.
Page 92
Disassembly & Reassembly
12-6Samsung Electronics
12-1-13 Separation of ASSY PDP MODULE P-X MAIN BOARD
Part NameDescriptionDescription 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.
X-Main
Board
① Remove 4 screws.
: PH,+,WWP,M3,L8,NI PLT
② Remove the X-Main Board.
Page 93
Disassembly & Reassembly
Samsung Electronics12-7
12-1-14 Separation of ASSY PDP MODULE P-Y MAIN BOARD
Part NameDescriptionDescription Photo
Flat Cable
① Detach the 6 scan board connectors from the panel by
pulling the holder from both the top and bottom ends.
Y-Scan
① Remove 2 screws.
: PH,+,WWP,M3,L8,NI PLT
Y-Main
Board
① Remove 4 screws.
: PH,+,WWP,M3,L8,NI PLT
② Detach all connectors from the Y-Main Board.
Page 94
Disassembly & Reassembly
12-8Samsung Electronics
12-1-15 Separation of ASSY PDP MODULE P-ADDRESS BUFFER BOARD
Part NameDescriptionDescription Photo
Still Bar
① Remove 3 screws.
: PH,+,WWP,M3,L8,NI PLT
② Remove the still bar.
Buffer
① Detach the all connectors from the buffer board.