Troubleshooting
D0CA/D0C9/D0C8/D0CB 8-68 SM
8.4.7 OTHER TROUBLESHOOTING
Operation Panel Unit
HW: Hardware issue, SW: Software issue
No. Symptom Cause Solution
1 Both the Smart Operation
Panel and the blue LED on
the operation panel do not
turn ON.
HW The Smart Operation
Panel cannot be supplied
with electrical power.
1. Reconnect the USB
cable between the
BICU (PCB1) and
the Smart
Operation Panel.
2. Replace the USB
cable.
3. Replace the main
controller board.
4. Replace the BICU
(PCB1).
2 The Smart Operation Panel
does not turn ON, but the blue
LED on the operation panel
turns ON.
HW The Smart Operation
Panel can be supplied
with electrical power
(blue LED lamp), but
nothing can be displayed
on the LCD.
1. Reconnect the LCD
I/F cable.
2. Replace the LCD.
3. Replace the main
controller board.
4. Replace the LCD
I/F cable.
3 A splash (blue) screen or
“Please wait” message stays
on the display.
SW
HW
The Smart Operation
Panel and LCD can be
supplied with electrical
power, but software
issues occur during the
boot-up sequence.
Firmware or eMMC data
on the Board is defective.
1. Update the Cheetah
System firmware in
recovery mode.
2. Do a factory reset.
3. Replace the main
controller board.
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