72LZ9700-TA (CHASSIS:LB03N) - LG TV Service Manual (repair manual). Page 69

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ⓒ LG Electronics. Inc.2010
Standard Repair Process Detail Technical Manual
3D Repair
3D Mode view error (like 2D mode)
A29
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
A28
Change the 3D Glasses
ok
Check 3D_SYNC Line
- Main P7800 49pin
- Formatter P802 2pin
Check 3D Emitter of Main – P6900
1pin : 5V
Check Q906,7 of Formatter B/D
Maybe FPGA or FRC has problems.
Replace It or 3D Formatter B/D
Replace 3D Glasses
Check 3D Emitter of IR Assy – 1pin : 5V
Replace 3D Emitter Assy
ok
No
Replace Q906,7 of Formatter B/D
ok
No
No
No
No
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