Troubleshooting
3-4
Samsung Electronics
3-4 Blinking Temp LED
No
Yes
No
Yes
Check Temp Sensor
connector CN106
on Sub Detector Board
Install jumper across
Temp Sensor Terminals
Does it work?
Replace Temp. Sensor
Reinsert
the Connector
Replace
Sub Detector Board
Do fan(s) run?
Does color wheel run?
Replace color wheel assy'
Is lamp on?
Replace DMD Board
Check 280V DC to lamp ballast(CN1)
Measure with DC meter
Does lamp
come on, then
shut off?
Replace Power Board
Re-install lamp assy'
Check pin 1 on CN503
on DMD Board for 5V DC
Check 5Vpp at CN503
pin 3 on DMD Board
Replace lamp assy' or ballast
Replace DMD Board
Replace ballast or lamp assy'
Yes
No
No
No
Yes
Yes
Yes
Yes
No
No
Yes
No
No
No
Yes
Yes
CN106
CN106
Temperature
Temperature
Sensor
Sensor
A blinking lamp LED is the most common failure indication. It can be caused by no lamp, no color wheel, no
fan(s), or other defective components.
Summary of Contents for HL-R5677W - 56" Rear Projection TV
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