3-7
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Only for training and service purposes.
ONE POINT REPAIR GUIDE
PRIMARY UNIT
NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE OR “HELLO” ON
FRONT PANEL
1-3. LCD System power 5 V, 3.3 VA (No 5 V, 3.3 VA)
1-3-1. Solution
Replace FRONT or MAIN board.
1-3-2. How to troubleshoot (Countermeasure)
1) Please check 5 V (pin1 ~ 2), 3.3 VA (pin11 ~ 12) of CN103.
2) If 3.3 VA, 5 V is abnormal, replace MAIN board.
3) If 3.3 VA, 5 V OK, replace FRONT board.
1-3-3. Service hint (Any picture / Remark)
< MAIN board top view >
CN103
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