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Troubleshooting for LED Blinking ( 1 / 2 time blink ) for OLED -2
EZ series
1 time blink
(check of 24V line)
Power on.
Check if the voltage
of 24V(pin8-15 of PB5)
Is rise up before LED 1 blink?
NG
(Power off) Disconnect
PB5 connector. Short
check between 24V and
OK
GND
Shorted
PB Module
PB5
24V
PB board of EZ950
Refer to the previous page block diagram.
Panel Module
OK
Check if the voltage
of EVDD_ON (pin 1 of PB4)
just before LED 1 blink?
NG
A board
24V
PB5
PB board of EZ1000
of SRV-12V(pin24-26 of A02)
is rise up before LED 2 blink?
(Power off) Disconnect the
OK
Short check between SRV-
Panel Module
3.3V
(A16)
(A02 is lower)
<A+P+PB>
2 time blink
(check of 12V line)
Power on.
Check if the voltage
OK
NG
A02 connector.
OK
12V and GND
Shorted
A board
CN5
(24V=8-15pin)
CN11
(12V=7-12pin)
12V
OLED
Panel Module
Panel Module
1
T-CON
15
board
1
14
54
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