Troubleshooting
6-2
Samsung Electronics
< Blinking Temp LED >
No
Yes
No
Yes
Check Temp Sensor
connector CN109
on
Detect
Board
Install jumper across
Temp Sensor Terminals
Does it work?
Replace Temp. Sensor
Re insert
the Connector
Replace
Detect
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 CN752
on DMD Board for 5V DC
Check 5Vpp at CN752
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
Temperature Sensor
CN109
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 HLR5078WX
Page 9: ...1 6 Samsung Electronics MEMO ...
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Page 43: ...Samsung Electronics 5 4 MEMO ...
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Page 56: ...Block Diagram Samsung Electronics 7 3 7 2 2 Digital Board Block Diagram ...
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Page 71: ...9 10 Samsung Electronics MEMO ...
Page 120: ...Operation Instruction Installation Samsung Electronics 11 7 11 2 4 RS 232C ...
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