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3. Protect Mode
(1) Symptom
1) After once shining, it does not discharge minutely
from module.
2) The Rely falls.(The sound is audible "click")
3) It is converted with the color where the front LED
is red from green.
(2) Check following
Is the Power Board
normal ?
Yes
Is the each connector
normal?
Yes
Is the Y-Board
normal?
Yes
Is the Z-Board
normal?
Yes
Is the X- Board
normal?
Yes
Is the Ctrl Board
normal?
Yes
Is the
VSC Board normal?
Yes
Is the COF of X, Y, Z
normal ?
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No
Is output the normality Low/High
voltage except Stand-by 5V?
No
After connecting well each connector,
the normality it operates?
No
Is the Fuse(FS202) on Y-B/D
normal?(In case of open is replace)
No
Is the output voltage after remove
P801 connect of Z-B/D normal?
Is the output voltage normal after
No
remove P211, P311 connector of
X-B/D?
Is the output voltage normal after
No
remove P161, P162 connector of Ctrl-
B/D?
No
Is the output voltage normal after
remove P801?
No
After crisis COF of each board, check the normality operates.
If in case normality operates, correspondence COF Fail is replace the module.
- 18 -
No
Replace Power
Board.
Yes
Replace the
connector.
Is the output voltage
Yes
Yes
normal after remove
P201 connector of
Y-B/D?
Yes
Replace
Z-Board.
After remove P311 output voltage normality:
Yes
Replace Right X-B/D
After remove P211 output voltage normality:
Replace Left X-B/D
Yes
Replace
X-Board.
Yes
After remove P801 normal
operation: Replace VSC Board
Replace
Y-Board.
LGE Internal Use Only
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