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PN43D490A1DXZA Fast Track Troubleshooting Manual - Rev 1/10/12
Vs Va Vsc Ve SERVICE BULLETINS
Voltages
2011 PDP Option Byte Table
Buffer Y ASC20110630001
V
X Main Quick Parts: Verify any parts changes
SMPS
before Ordering.



Buffer X
Logic
Y Main
Main PCB


Main PCB

Spkr R Buffer Spkr L
Buffer


HELP : 888-751-4086; 866-894-0637 FE) FIRMWARE
GSPN
http://gspn3.samsungcsportal.com
T-MST4AUSC.exe(24.9MB)
via GSPN also available on
PLUS ONE Samsung.com web site.
http://my.plus1solutions.net/clientPortals/samsung
Important to check for new S.W.
HOT TIPS updates.
If the set has "grainy" video, verify the sources first. If
they are good, check the OSD. if that is fine, narrow the
inputs if possible. Digital noise will show up as artifacts
that customers will describe as "Grainy" and can occur
on the HDMI inputs. If this only occurs on the HDMI
inputs, and you know the sources are good, replace the
1
main board. Also check external HDMI Cable is < 40 feet.
PN43D490A1DXZA Fast Track Troubleshooting Manual

CN801 (SMPS) CN201 (Main Board)

Pin No. Signal
Pin No. Signal
(Main (Main
(SMPS) (SMPS)
Board) Board)

SW_POW
1 PS-ON 1
ER

2 STBY 2 A5V_PW

3 GND 3 DGND

B15VS_P
4 D15V 4
W

5 GND 5 DGND

6 GND 6 DGND

Pin No. Signal
Pin No. Signal
(Main (Main
(SMPS) (SMPS)
Board) Board)

CN802 (SMPS) CN2001 (Logic Board) 7 D5.3V 7 B5V_PW
Power On Sequence Pin No. Signal Pin No. Signal (Logic
1. STBY 5V (Pin 2 CN801) (SMPS) (SMPS) (Logic Board) Board) 8 D5.3V 8 B5V_PW
2. PS_ON (approx 3.3V