Power-Up Boot Fail Trouble Shooting guide
Check P400 All
Voltage Level (5V, 12V, 24V)
Check power connector and
RL_ON signal OK ?
Replace Power board
Y
N
Y
Check IC501 RESET and
UPDATE pin
Check switch SW500, SW501
Y
N
Check X500 Clock
7.37MHz
Check X500 application circuit
or Replace X500
Y
N
Check IC502 IIC communication
state
Check IIC line or replace IC501
N
Check IR input state of IC501
23pin
Check IR board
N
Y
Re-download PTC Micom
Y
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