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