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3. Protect Mode
(1) Symptom
After once shining, it does not discharge minutely
¯
from module
The Rely falls(The sound is audible "click")
¯
It is converted with the color where the front LED
¯
is red from green.
(2) Check follow
Is normal the Power
Board?
Yes
Is normal the each
connector?
Yes
Is normal the
Y- Board?
Yes
Is normal the
Z- Board?
Yes
Is normal the
X- Board?
Yes
Is normal the
Ctrl Board?
Yes
Is normal the
VSC Board?
Yes
Is normal the
COF of X, Y, Z?
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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 normal the Fuse(FS2) on Y-B/D?
(In case of open is replace)
No
Is normal the Fuse(FS1, FS2) on Z-
B/D? (In case of open is replace)
Is normal the output voltage after
No
remove P1, 2, 3, 4, 5 connector of
X-B/D?
Is normal the output voltage after
No
remove P1, 2, 4, 9, 10 connector of
Ctrl-B/D?
No
Is normal the output voltage after
remove P1001, P1100?
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.
No
Replace
connector.
Is normal the output
Yes
Yes
voltage after remove
P5, P6 connector of
Y-B/D?
Is normal the output
Yes
Yes
voltage after remove
P1 connector of
Z-B/D?
After remove P1, P2, P3 output voltage
Yes
normality: Replace Right X-B/D
After remove P4, P5 output voltage
normality: Replace Left X-B/D
Yes
Replace
X-Board.
Yes
After remove P1001, 1100 normal
operation: Replace VSC Board
Replace
Y-Board.
Replace
Z-Board.
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