Samsung PDP4294X/SMS User manual

PLASMA DISPLAY TV
Chassis : D54B(N)
Model: PDP4294X/SMS
PLASMA DIAPLAY TV CONTENTS
Specifications
Alignment and Adjustments
Exploded View and Parts List
Electric Parts List
Circuit Description
Troubleshooting
Schematic Diagrams
1.
2.
3.
4.
5.
6.
7.

ELECTRONICS
©Samsung Electronics Co., Ltd. JUL. 2003
Printed in Korea
AA82-00793A
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.

Alignment and Adjustments
Samsung Electronics 2-1
2. Alignment and Adjustments
2-1 Service Mode
2-1-1 SERVICE MODE Entry Method (General Transmitter)
■ For the General Transmitter
1. Turn the power off and set to stand-by mode.
2. Press the buttons of the transmitter in this order; Mute-1-8-2-Power to turn the set on.
3. The set turns on and enters service mode.
* If you fail to enter service mode, repeat steps 1 and 2 above.
2-1-2 Initial DISPLAY State of SERVICE MODE
2-1-2(A) OSD DISPLAY
2-1-2(B) Button Operations in SERVICE MODE
1. UPD64083 : COMB-FILTER
2. VPC3230(M) : MAIN VCD
3. VPC3230(S) : SUB VCD
4. FLI2200 : DEINTERLACER
5. ASI500 I : SCALER MAIN / OSD
6. ASI500 II : SCALER PIP
7. DNIe : PICTURE ENHANCER
8. CXA2151HD : COMPONENT MUX
9. AD9883 : A/D CONVERTER
10.LOGIC : PDP DRIVER
11.TP LOG-ASI : TEST PATTERN
12.OPTION TM_ALS42N02_001
13. RESET 02-12-10 09H
Menu
Joystick UP/DOWN
Joystick (LEFT/RIGHT)
Displays all menus
Cursor move to select items
Enable to increase and decrease the data of the selected items
SERVICE MAIN

Alignment and Adjustments
2-2 Samsung Electronics
2-1-3 Factory Data by Mode
2-1-3(A) UPD64083 : TV-AV
ITEM
VAPGAIN
VAPINV
YPFP
YPFG
4
16
3
9
TV/VIdeo/S-Video/Component1,2(SD)
4
16
3
9
4
16
3
9
4
16
3
9
Component1,2(HD) PC DVI
ITEM
CONTRAST
BRIGHTNESS
PEAKING
CORING
LUMA DELAY
HPLL SPEED
YUV CONTRAST
YUV BRIGHTNESS
YUV SATCB
YUV SATCR
YUV TINT
SATURATION
TINT
TV/VIdeo/S-Video/Component1,2(SD)
43
27
5
0
255
1
29
68
42
42
3
2000
32
43
27
5
0
255
1
29
68
42
42
3
2000
32
Component1,2(HD) PC DVI
2-1-3(B) VPC3230 : TV-COMP
43
27
5
0
255
1
29
68
42
42
3
2000
32
43
27
5
0
255
1
29
68
42
42
3
2000
32

Alignment and Adjustments
Samsung Electronics 2-3
2-1-3(C) VPC3230(S) TV COMP
2-1-3(D) FLI2200 : TV-COMP
ITEM
PIP CONTRAST
PIP BRIGHTNESS
YUV CONTRAST
YUV BRIGHTNESS
LUMA DELAY
H POSITION
V POSITION
TV/VIdeo/S-Video/Component1,2(SD)
43
27
29
68
255
0
0
Component1,2(HD) PC DVI
43
27
29
68
255
0
0
43
27
29
68
255
0
0
43
27
29
68
255
0
0
ITEM
Y CLAMP
C CLAMP
Y DELAY
C DELAY
MOTION DETECT
TV/VIdeo/S-Video/Component1,2(SD)
0
512
4
11
48
Component1,2(HD) PC DVI
0
512
4
11
48
0
512
4
11
48
0
512
4
11
48

Alignment and Adjustments
2-4 Samsung Electronics
2-1-3(E) ASI500 I : ALL (EXCEPT SUB CONT/BRIGHT)
ITEM
R CONTRAST
G CONTRAST
B CONTRAST
R BRIGHTNESS
G BRIGHTNESS
B BRIGHTNESS
TEXT ALPHA
TEXT THRESHOLD
FILTER ML
FILTER MR
FILTER FR
FILTER MC
FILTER UC
FILTER LC
FILTER YPASS
R GAMMA
G GAMMA
B GAMMA
H POSITION
V POSITION
H SIZE
V SIZE
OVERSCAN B
OVERSCAN G
OVERSCAN R
TV/VIdeo/S-Video/Component1,2(SD)
32
32
32
0
0
0
1
7
0
0
0
16
0
0
0
32
32
32
0
0
0
0
63
63
63
Component1,2(HD) PC DVI
32
32
32
0
0
0
1
7
0
0
0
16
0
0
0
32
32
32
0
0
0
0
63
63
63
32
32
32
0
0
0
1
7
0
0
0
16
0
0
0
32
32
32
0
0
0
0
63
63
63
32
32
32
0
0
0
1
7
0
0
0
16
0
0
0
32
32
32
0
0
0
0
63
63
63

Alignment and Adjustments
Samsung Electronics 2-5
2-1-3(F) ASI500 II : ALL
ITEM
PIP R CONT
PIP G CONT
PIP B CONT
PIP R BRIGHT
PIP G BRIGHT
PIP B BRIGHT
PIP FILTER LC
PIP FILTER ML
PIP FILTER MR
PIP FILTER UC
TV/VIdeo/S-Video/Component1,2(SD)
32
32
32
0
0
0
0
0
0
0
Component1,2(HD) PC DVI
32
32
32
0
0
0
0
0
0
0
32
32
32
0
0
0
0
0
0
0
32
32
32
0
0
0
0
0
0
0
2-1-3(G) DNIe : ALL (EXCEPT SUB BRIGHT/CONT)
ITEM
SUB BRIGHT
SUB CONT
NR SCALE MAX
NR SCALE MIN
DE GAIN COR
DE GAIN CLIP
CE UPPER
CE CUTOFF
CE GAIN
WTE Y THRE
WTE C THRE
SYNC MODE
PATT SEL
TV/VIdeo/S-Video/Component1,2(SD)
0
0
52
18
3
60
240
64
48
230
2
1
0
Component1,2(HD) PC DVI
0
0
48
16
3
60
240
64
48
230
2
1
0
0
0
48
16
3
60
240
64
48
230
2
1
0
0
0
48
16
3
60
240
64
48
230
2
1
0

Alignment and Adjustments
2-6 Samsung Electronics
RED CONPENSA
BLUE CONPENSA
WTE GAIN
RAST VSIZE
RAST HSIZE
SHARP OFFSET
616
616
58
1023
895
0
616
616
58
1023
895
0
616
616
58
1023
895
0
616
616
58
1023
895
0
ITEM
GAIN-SEL
CR GAIN
CB GAIN
YG GAIN
TV/VIdeo/S-Video/Component1,2(SD)
1
7
7
1
1
7
7
1
Component1,2(HD) PC DVI
2-1-3(H) CXA2151HD : COMP-PC
1
7
7
1
1
7
7
1
2-1-3(I) AD9883 : COMP-PC
ITEM
R GAIN
G GAIN
B GAIN
R, CR OFFSET
G, Y OFFSET
B, CB OFFSET
AUTO COLOR
TV/VIdeo/S-Video/Component1,2(SD)
142
142
142
60
48
64
-
Component1,2(HD) PC DVI
142
142
142
60
48
64
-
142
142
142
54
54
54
-
142
142
142
54
54
54
-
AUTO COLOR : Automatic white balance adjustment in pc mode and component(HD) mode.

Alignment and Adjustments
Samsung Electronics 2-7
2-1-3(J) LOGIC : ALL (EXCEPT DRIVE/CUTOFF)
ITEM
R DRIVE
G DRIVE
B DRIVE
R CUTOFF
G CUTOFF
B CUTOFF
GAMMA
GTS SET
ERD MODE
RANDOM NOISE
DIFF FILTER
APC
APC SET
APC VALUE
ACTIVE VPOS
ACTIVE HPOS
VSYNC POS
HSYNC POS
VSYNC WIDTH
HSYNC WIDTH
TV/VIdeo/S-Video/Component1,2(SD)
140
130
120
0
0
0
1
0
2
0
1
1
0
127
12
19
3
32
2
12
Component1,2(HD) PC DVI
140
130
120
0
0
0
1
0
2
0
1
1
0
127
12
19
3
32
2
12
140
130
120
0
0
0
1
0
2
0
1
1
0
127
12
19
3
32
2
12
140
130
120
0
0
0
1
0
2
0
1
1
0
127
12
19
3
32
2
12

Alignment and Adjustments
2-8 Samsung Electronics
ITEM
LOG PATTERN
LOG HIGH LEVEL
LOG LOW LEVEL
ASI COLOR BAR
TV/VIdeo/S-Video/Component1,2(SD)
0
255
0
0
Component1,2(HD) PC DVI
2-1-3(K) TP LOG-ASI : ALL
0
255
0
0
0
255
0
0
0
255
0
0
2-1-3(L) OPTION : ALL
ITEM
PIX SHIFT
SHIFT TEST
PIX NUMBER
SHIFT LINE
SHIFT TIME
NUMBER RANGE
LINE RANGE
COUNTRY
TEMP PROTECT
DNIe DEMO
DNIe THROUGH
VIDEO MUTE
IRC AFN
LANGUAGE
CUSTOMER
TUNER
PILOT HIGH
PILOT LOW
RESET
TV/VIdeo/S-Video/
Component1,2(SD)
0
0
1
1
4
4
4
0
0
0
0
10
0
0
0
1
21
16
-
Component1,2(HD) PC DVI
0
0
1
1
4
4
4
0
0
0
0
10
0
0
0
1
21
16
-
0
0
1
1
4
4
4
0
0
0
0
10
0
0
0
1
21
16
-
0
0
1
1
4
4
4
0
0
0
0
10
0
0
0
1
21
16
-
Adjustment
0:OFF 1:RF,Video,S-Video,Component1,2 2:PC 3:ALL
0:minute 1:second
Number of pixels that shift left/right
Number of lines that shift up/down
Time set during shift test
Shift range
Shift range
0:Korean 1:America 2:Japan
Not used
0:OFF 1:ON
0:Not through 1:Through
Unit:100mese
0:General American mode
1:Military American mode
0:English 1:French 2:Spanish
0:CE 1:VMB
0:1 TUNER 1:2 TUNER
Stereo ↔ mono boundary value
Stereo ↔ mono boundary value
Customer settings reset

Alignment and Adjustments
Samsung Electronics 2-9
Alignment and Adjustments
2-2 WHITE Balance Coordinates
2-2-1 SPN4235 White Balance Adjustment
1. W/B Adjustment is required for the following four modes: DVI → DTV → PC → RF
2. Adjustment Method (DVI, DTV, PC : VG828, RF : Adjust RF signals to match the
Toshiba pattern (in-house signal)
!Adjust the target set by adjusting the panel logic and the video DNIe adjustment register in
register in order to determine the referential W/B of the panel with a DVI input, which
is the full digital path.
@For DTV adjustment, adjust the adjustment register of AD9883 to align the DTV signal
to the DNIe and logic panel value which was fixed with a DVI adjustment so that they are
in effect considered to be the same signals. (At this time, do not adjust the gain of
AD9883 → the Highlight W/B does not need to be adjusted since its deviation falls
within valid distribution range.)
#PC adjustment is same as DTV adjustment. (The offset can be applied to the values
obtained through DTV adjustment. However, additional adjustment is required for
Y, Cb, and Cr of DTV since PC processes R, G, and B signals.)
$RF adjustment is performed with the Toshiba pattern (in-house signal) and differs
from the VG828 signals in the above three modes. Hence, it should be performed with
the same method of !DVI adjustment.
❈Thus, Micom saves the W/B data separately for each memory mode of the block
(See the block diagram given below) during W/B adjustment.
Adjustment Reg
Adjustment Reg
Adjustment Reg
Memory mode
Memory mode Memory mode
level
level
Micom can memorize the four modes
separately. However, under the current
adjustment guidelines, DTV and PC are
memorized with the same value during
DVI adjustment and RF is memorized
with a separate value.

Alignment and Adjustments
2-10 Samsung Electronics
2-2-2 White Balance Coordinates by Mode
DVI DTV COMPONENT
(480P, 720P,1080i)PC VIDEO
H/L
x285 285 290 285
y290 290 305 300
Y(fL) 32.0 33.0 17.6 33.0
L/L
x285 285 290 285
y295 290 300 295
Y(fL) 1.3 1.2 1.0 1.4
PedestalLevel Low Light
measure point High Light measure point
=Pattern Used in Adjustment : 10 Steps Grayscalepattern

Alignment and Adjustments
Samsung Electronics 2-11
2-3 Voltage Adjustment
Turning the variable resistor(VR) adjusts voltage.
CN804
CN800S
CN801
CN803
CN802
N805
N806
N812
T(VS)
T:TestPoint
T(VSCAN)
T(VSET)
T(VA)
T(VG)
T(STB_5V)
T(VE)
VR4
VSET VR6
VSCAN VR5
VE VR1
VS
VR7
VA
VR3
D5V VR2
Vstb
VR: Variable Resistor
SMPS
OUTPUT Voltage(V)
VA
See the labels attached
on the base chassis.
VSCAN(VSC)
VS
VE
VSET
D5V +5V
STB_5V +5V
VG +15V

2-12 Samsung Electronics
MEMO

Circuit Operation Description
Samsung Electronics 5-1
5. Circuit Description
5-1 BLOCK DIAGRAM
Input
Data
Processor
Data
controller
DRAM
Driver
Timing
controller
852x480 Pixels
852x3x480 Cells
PDP PANEL
Row
Driver
Y-P ulse Generator
Column Driver
X-P ulse
Generator
Power Supply
AC Power
Source
(110/220V)
LVDS
Display
Data
Driver
Timing
Scan
Timing
A/D
Converter
Image
Scalar
Micom
Image
Enhancer
LOGIC B’d
ANAL OG B’d
POWER B’d
B’d
B’d
clock: 60MHz
clock: 27MHz
clock: 20MHz 40MHz
DIGITA L B’d
Video
Decoder
Deinterlac
er
TMDS
Receiver
Video
S/W
Audio
Processor
Comb
Filter
SUB
Tuner MAIN
Tuner
Y Driver X Driver

Circuit Operation Description
5-2 Samsung Electronics
5-2 WIRE DIAGRAM

Circuit Operation Description
Samsung Electronics 5-3
5-3 POWER SUPPLY
5-3-1 Block Diagram
(+ 95V)
(+ 110V)
78V
MAG-AMP
85

Circuit Operation Description
5-4 Samsung Electronics
5-3-2 Circuit Description
1. Outline (PDP42inch SMPS)
Considering various related conditions, the switching regulator with good fficiency and allowing for its
small size and light weight was used as the power supply for PDP 50inch (Alexander), VS requiring high
power consumption used Asymmetrical Half Bridge converter and flyback converter and other high volt-
age (VSCAN, VSET, VE) used DC/DC 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 auto-
matically recover from AC power loss. (Note that nominal voltages for test purposes are considered to be
with +/- 1.0V of nominal).
STD_5V is a SELV standby voltage that is always present when AC mains voltage present.
3. OUTPUT
This power supply is 15 output switching power supply for PDP 42inch(Alexander). The output voltage,
and current requirements for continuous operation are stated below. (table 1)
Table1. Specifications of Output Power Supplies for PDP SMPS
Output Name
VS
VA
VSCAN
VSET
VE
VG
D12V
A12V
D6V
A6V
D5V
D3.3V
12V AMP
VT
STD_5V
Output Voltage
+75V ~ 100V (89V)
+65V ~ 80V (78V)
+65V ~ 100V (75V)
+80V ~ 10V (95V)
+100V ~ 120V (110V)
+15V
+12V
+12V
+6V
+6V
+5V
+3.3V
+12V
+33V
+5V
Output Current(Max)
4.5A
0.6A
0.1A
0.1A
0.1A
1.5 A
0.1A
0.3A
0.1A
0.1A
1.0A
4.5A
1.7A
0.003A
0.6A
Using in PDP driving
Sustain Voltage of Drive Board
Address Voltage of Drive Board
Driving Voltage of Fet
IC Driving Voltage of Logic Board
Amp Voltage of Audio Board
Stand-by for Remote Control

Circuit Operation Description
Samsung Electronics 5-5
1) Over voltage Protection
SMPS has an over voltage detection circuit as well as a circuit which keeps a constant level of voltage.
It is designed so that when an Over Voltage occurs in any part it does not affect another output part.
SMPS cuts off Over Voltage in latch mode. The following tagle gives te Over Voltage protection
specifications.
Table2. Over voltage Protection.
Parameter
VS(85V)
VA(75V)
D6V
D3.3V
Min
100 ~
94 ~
8.2 ~
4.7 ~
Unit
V
V
V
V
2) Short Circuit and Over current Protection.
Short-circuit of the output terminal is defined as an output impedance that is less than 300mohm.
For a given SMPS, when a VS output is short-circuited, the SMPS stops operation. Even if a short-circuit
occurs between the main output and the STD_5V, the SMPS does not fail. When the short-circuit is cleared,
it will operate normally again. Even if a short_circuit occurs when the SMPS is operating within the range
presented in Chapter 3, it will not cause a malfunction to the parts or the PCB patterns.
The following table gives Over Current protection specifications.
Table3. Over Current Protection.
Parameter
VS(85V)
VA(75V)
12V
6V
D3.3V
Min
~
~
~
~
~
Unit
A
A
A
A
A

Circuit Operation Description
5-6 Samsung Electronics
4. Function of Board
! Remote Control
Using a 250V/10A relay. The board makes remote control available.
@ Free Voltage
The Board is designed so that the input voltage can be used within 90VAC to 264VAC.
# Improvement of power factor
The SMPS has a power-factor compensation circuit so that the power-factor can be more than 0.9.
$ Protection
The SMPS has circuits which protect the product from over current, over voltage and short-circuit.
5. Part Block Diagram and Part Function.
! AC-DC Converter
The AC/DC Converter converts AC input into DC voltage using a power-factor enhancement circuit.
It is designed to not only enhance the power-factor but also suppress noise. It also becomes the input
for other constant voltage parts.
Picture 1. PFC Drive FET(2SK2372) Drain pulse