Power On Problems: (see page 2)
Video Problems: (see page 3.4)
Other:
HDMI Bleed-over
(below Bracket)
SMPS
T-CON
2/21/2011
(T-VALAUSC, 1035.0)
Reason: Support Netflix 2.1 and MLB.tv
apps. Support new TV camera (Model:
CY-STC1100). Add "3D Optimize" option
on Menu for better 3D image.(Only
LCD/LED TV)
Previous: 1032.0
Prevents :
-USB Power Overload' message pops up
even USB port is not connected
Main
1
FIRMWARE
-Plug & Play is displayed upon power up.
Speaker
-00373A
-03566B
-14056G
-00878A
-04402AT-CON PCB
-06543B
-13131A
-13133A
-13844A
-14603B
-000527
-00162A
-12723X
-12942A
-12965C
Page 2
UN55C6900VFXZA
Fast Track Troubleshooting Manual
C
S
N
I
2
G.
0
1
1B12V10GND
2A5V11GND
P
S
I
I
N
G.
Wiring Diagram
IncludeConnectorNumbers, References, and
Locations.
Power On Sequence:
1.Standby Voltages: CN201-2, 4 (5V)
2.Power On probable error on CN201-2
or 4 PS_ON )
3.Low Voltage Supplies On CN201-
To Force Backlight On
without Main Board :
1.Remove Power Cord
2.Disconnect CN201
3.Plug In Power Cord
3B12V12H_OUT
4A5V13B13V
5B5V14PWM
Dimming
6B5V15B13V
7B5V16B5V
8GND17B13V
9GND18IP_DET
5,6,7,13,17
4.Back Light Supply On CN201 -16
5.Back Light Confirmation CN201-18
4.Backlight should be
on immediately.
2
Page 3
Fast Track Troubleshooting Manual
1.Verify Video Operation
a. Customer Picture Test (models available)
b. “Display” (If display is OK source is suspected)
C. Substitute with known good Source
(external DVD or Signal Generator)
2. Using Test Patterns in Service Mode
- ENTER SERVICE MODE –
1. Select an active source signal. (HDMI preferred)
Test Pattern may rely on signal source to appear.
Customer Remote Service Remote
2.Power off 2. Power On
3. Mute, 182, Power 3. Info, Factory
2010 Models
FBE
FRC
1.Check OSD & Customer Picture Test.
2. Access SVC Mode (with source signal)
3. Activate FBE Test Patterns & Verify.
4. Activate FRC Test Patterns & Verify.
2011 LED 8000 SeriesTROUBLESHOOTING VIDEO PROBLEMS
1.Select an active source signal. (HDMI preferred)
Test Pattern may rely on signal source to appear.
2. Access Service Mode
3. Access SVC
4. Access Test Patterns
5. Access Genoa-P
6. Check Test Patterns
7. If OK suspect input Source
8. Access Napoli
9. Check Test Patterns
10. If OK and Genoa-P was not good
Suspect Main Board or LVDS Cable
3
Page 4
ON SCREEN FAILURE EXAMPLES:
Fast Track Troubleshooting Manual
ALIGNMENTS:
1. Check/Set Option Bytes:
If Picture & Display errors
Defective Main Board, LVDS,
or T-CON
Pixelization can be caused by the main board
but is more commonly a source error
Green lines or a green screen
defective main board , LVDS , or
T-CON.
TypeModelTunerRegion DDR Light Effect
55A1UF0E UC6900SEMCO--OFF--USAW-Violet--
2. Check/Perform Firmware Upgrade for
all repairs.
3. Perform reset in Service Mode &
Plug and Play if Main board is replaced.
SPECIAL NOTES:
Inform customer of reset of all
Settings if Main Board or Panel is replaced.
Option
Audio
AMP
Ch Table Country Front Color
Local
Set
Exhibition
Mode
Vertical or Horizontal Lines :Defective
Panel likely but also T-CON, LVDS, or Main
Board. Use Test Patterns in Factory Service
Mode to determine error)
4
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