PN43D450A2DXZA Fast Track Troubleshooting Manual
Y Buffer
SMPS
Y Main X Main
Spkr
Main
Func.
Logic
HELP: 1-888-751-4086 (Tech Support)
1-866-894-0637 (ME/FE)
GSPN
http://service.samsungportal.com/EP/web/
portal/jsp/EP_Default1.jsp
PLUS ONE
http://my.plus1solutions.net/clientPortals/s
amsung
HOT TIPS
-Power On Problems: (pg. 3)
-Video Problems: (pg. 4)
Buffer FBuffer ESpkr
Latest Firmware:
None – As of 5/18/12
Pub# AP-PN43D450A2D Rev. Date: 5/18/2012
Service Bulletins:
2011 PDP Option Byte Table ASC20110630001 .
Quick Parts List:
Version Parts No Short Description
ALL BN44-00442A SMPS
N102 BN96-16507A Logic Main PCB
B104 BN96-16507B Logic Main PCB
ALL BN96-16508A Buffer E
ALL BN96-16509A Buffer F
N102 BN96-16510A X Main
B104 BN96-16510B X Main
ALL BN96-16511A Y Main
ALL BN96-16512A Y Main Scan
ALL BN96-16730C Function & IR PCB
ALL BN96-19469A Main PCB
N102 BN96-17356A Panel
B104 BN96-17356B Panel
ALL BN96-16782A Rear Cover
ALL BN96-16786A Stand Guide
N102 BN96-16789A Stand Base
ALL BN96-16789C Stand Base
N102 BN96-17869A Front Cover
N102 BN40-00140B Tuner
ALL BN96-13325G LVDS Cable
N102 BN96-18071A Speaker
ALL 3903-000467 Power Cord
ALL AA59-00506A Remote
PN43D450A2DXZA
Fast Track Troubleshooting Manual
Power On Sequence:
1. STBY 5V (CN801, #2, 5v)
2. PS_ON (CN801, #1, 3.3v-0v)
3. VS_ ON (CN802, #6, 0-3.3v)
4. Panel should illuminate briefly
PN43D450A2DXZA
Fast Track Troubleshooting Manual
Power Supply Trouble Shooting Notes:
2010/2011 models
Will not be run with the “X” or “Y” main disconnected. The SMPS will
shut down immediately. However if a meter is first connected to the
test point when power is applied it will read the cor r ect voltage briefly
before shut- ting down.(You have enough time to check key
voltages)
CAUTION:
until power has been turned off long enough for Vs to drop below 10V
or damage will occur to X or Y Boards.
Do not reconnect any connectors t o SMPS or Y/X Boards
Sample
“VITAL SIGNS”
When troubleshooting, It’s very important to first check Vs, Va, Vsc & Ve
If Vs is missing (0V), disconnect power and check for short. Use ohm
meter to measure resistance while disconnecting Y-Board & X-Board
supply feeds one at a time.
Turn Power On and Test SMPS with shorted connector removed for
correct Vs voltage verification. (It may only come up briefly but to full
level). Be careful not to reconnect power connectors until Vs falls below
10V.
If Va is low or missing, disconnect power connectors to Address Boar ds
and Check to see if SMPS Supply is restored. (Note Va feed normally
passes through the Y-Driv e t o t he Addr ess Boards (Logic Buffer Boards).
If Vsc is low or missing and Vs is OK, the failure is with the Y-Board
.
since the Y-Board generates the Vsc voltage from the supplied Vs.
SMPS Over Current Protection
If a short circuit occurs on either the VS or VA volt age lines, the SMPS
stops operating, but should not fail. When the short circuit is remov ed
from the source line, the Power Supply will operate normally again.
Many SMPS Supplies are replaced needlessly!
If Ve is low or missing and Vs is OK, the failure is with the X-Board since the
Ve is generated by the X-Board from the supplied Vs. (Please note: In some
rare cases the Ve is generated by the Y-Board fed to the X-Board.)
Other SMPS Voltages:
Check Low Voltage feeds to the Main Board and other supplied Assemblies.
3
(
PNXXD8000 Sample)
2011 PDP Signal Path for Troubleshooting
Genoa-P
Logic
LVDS
CABLE
Logic
Board
X
M
A
I
N
X
B
U
F
F
Y
B
U
F
F
Y
M
A
I
N
Logic Buffer
Boards
Genoa-
P
A
R
S
E
N
A
L
Main Board
Boot
Logo
OSD
Customer
Picture Test
Inputs
A/V
HDMI
PC
USB
Etc.
231
PN43D450A2DXZA
Fast Track Troubleshooting Manual
TROUBLESHOOTING VIDEO PROBL E M S
1. Verify Video Operation
2. Using Test Patterns in Service Mode
a) Customer Picture T est (if available)
b) “Display ”
c) Substitute with known good Source
(external DVD or Signal Generator
(If display is OK source is suspected)
)
Customer Remote: Service Remote:
1. Power off 1. Power On
2. Mute, 182, Power 2. Info, Test
3. Determine cause
a) If Logic pattern is NG; Logic
board, Logic buffers or
Panel are suspect.
b) If FBE patterns is NG and
c)
Logic is OK; Main or LVDS
cable are suspect.
If both are OK it is likely a
source issue.
- ENTERING SERVICE MODE –
4
PN43D450A2DXZA
Fast Track T roubleshooting Manual
ALIGNMENTS & OPTION BYTES :
1. Check/Adj. VS, VA, VE, & VSC according to Panel Label
and Diffusion test. (see bulletins for any special notes
before making changes)
2. Check/Set Option Bytes:
- ENTER SERVICE MODE -
a) Customer Remote: Power off; M ute, 182, Power On
b) Service Remote: Power On; Info, Test
Model
Code
Side Label
N101 43DHHcD PD450 ALPS - - - P-S-C-BK
N102 43DHHcD PD450 ALPS - - - P-S-C-BK
A103 43DHHcD PD450 ALPS - - - P-S-C-BK
B104 43DHHcD PD450 ALPS - - - P-S-C-BK
I105 43DHHcD PD450 ALPS - - - P-S-C-BK
I406 43DHHcD PD450 ALPS - - - P-S-C-BK
I407 43DHHcD PD450 ALPS - - - P-S-C-BK
I108 43DHHcD PD450 ALPS - - - P-S-C-BK
PN43D450A2DXZA
Type Model Tuner
Option
Light
Effect
Ch
Country Front Color
Table
DIFFUSION TEST/ADJ. (cell miss-firing, older
units)
- Allow the unit to w arm up 15 to 20 minutes
- Access the Bur n Prot ect Sig . Pattern in Cust .
Menu.
-Adj ust the Vs volts until screen errors are gone
in
both dark and bright areas.
- Adjust the Vs volts within +/- 10V on the panel
label.
SPECIAL NOTES:
See bulletin “Red Dots” for correction/
adjustments for this model.
5
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