Samsung PN51E8000GFXZA Schematic

PN51E8000GFXZA

Fast Track Troubleshooting Manual – Rev 5/23/12

Vs Va Vsc Ve Label Voltages

Buffer Y

Y Main

Logic Main PCB

Spkr R

Logic Buffer Boards

HELP : 888-751-4086; 866-894-0637 FE)

GSPN

http://gspn3.samsungcsportal.com

PLUS ONE

http://my.plus1solutions.net/clientPortals/samsung

HOT TIPS

- Check for continuous Firmware upgrade for this model series…

-Motion Control command problems are related to Firmware upgrade and room environments. Check room environment and user operation understanding and conditions.

SMPS

Bluetooth Module

moIP Module

Spkr L

Logic Buffer Boards

X Main

Buffer X

Main PCB

Wi-Fi Module

FIRMWARE

2012 PDP Echo-P Firmware (1018.2) 5/25/12

Avail on GSPN or Samsung,Com

Always check for latest updates

SERVICE BULLETINS

4/2/12 ASC20120402001 : Voice Command issue … Fix: Update to latest firmware

Quick Parts: Verify before Ordering

Fast Track Troubleshooting Manual PN51E8000GFXZA

Power On Sequence

1. STBY 5V (Pin 2 CN801)

2. PS_ON (approx 3.3V – 0V) (Pin 1 CN801)

3. Low Voltages On 5.3V & 15V (Voltage Signals listed in Charts)

4. VS_ ON (approx 0V – 3.3V) (Pin 6 CN802)

(Power Supply sends Vs to Y & X Boards, & Va to Logic Buffer Boards.)

5. TV on with Boot Logo appearing.

Fast Track Troubleshooting Manual

Power Supply Trouble Shooting Notes:

2010/2011/2012 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 correct voltage briefly before shut- ting down.(You have enough time to check key voltages)

CAUTION: Do not reconnect any connectors to SMPS or Y/X Boards until

power has been turned off long enough for Vs to drop below 10V or damage will occur to X or Y Boards. .

Over Current Protection

For the SMPS Power Supply... If a short circuit occurs on either the VS or VA voltage lines, the SMPS stops operating, but should not fail. When the short circuit is removed from the source line, the Power Supply will operate normally again. Many SMPS Supplies are replaced needlessly!

SAMPLE VIEW & READINGS

. VITAL SIGNS check Vs, Va, Vsc & Ve

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 short connector removed for correct Vs voltage verification. (It may only come up briefly but to full level). Again be careful not to reconnect Power Connectors until Vs falls below 10V.

If Va is low or missing, disconnect Supply Feed to Address Boards and Check to see if SMPS Supply is restored. (Note Va feed normally passes through the Y-Drive to the Address Boards (Logic Buffer Boards).

If Vsc is low or missing and Vs was OK, the failure is with the Y-Board

since the Y-Board generate the Vsc voltage from the Vs supplied by the SMPS. 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 Vs supplied by the SMPS. Please note in some rare cases the Ve may be generated by the Y-Board feed to the XBoard.) Other SMPS Voltages: Check Low Voltage feeds to the Main Board and other supplied Assemblies.

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