LG HF85LA - Troubleshooting Flow Chart

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Only for training and service purposes.
SET problem
occurrence
Yes
Set turn off
Automatically?
Check a power cord connection
After Pulling out th e adapter DC Plug
Adapter replacement
Temp problem
Or Fan problem?
FAN connection Check
FAN defect check
Main b/d defect check
Broken image
(Vertical/ parallel bar)
DMD Cable check
Engine replacement
Yes
Yes“Temp”
No
No
DMD connection check
 To check the Phenomena, Please check “power off status” in the In -Start
mode
as quickly as possible while Set working
A light source on
but No image
A light source
does not turn on
Driver connection check
Main b/d defect check
Main b/d defect check
“FAN”
Joystick LED
Works?
No
No
Yes
Adapter Power 19V
A Light Source
turned on?
No
Yes
Main b/d defect check
Main b/d defect check
FANx Error
(“x” is Fan No.)
High temp Error
Ambient Temp Err
SET Power On?
Driver B/D Defect Check
Main B/D defect check
2. Flow Chart for major symptom