Casio PX-780 User Manual

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4-18. Printer NG
Low Battery
Battery volvage
6.0V?
Replace Printer,
check again.
MAIN PCB is defective.
Printer is defective.
OK OK
NG
NG
Connector is loosely
connected.
OK
NG
Check the connection
of CN19.
4-19. Key Backlight NG
Check the connection
of CN16.
FFC is disconnected.
Connector is loosely
connected.
MAIN PCB is defective.
KEY PCB is defective.
OK
Yes
NG
No
OK
No
FFC
damaged?
Replace KEY PCB,
check again.
4-20. MCR NG
Check the connection
of CN14.
MCR Head is
defective.
MCR PCB is defective.
OK
Yes
No
OK
NG
FFC
damaged?
Replace MCR PCB,
check again.
FFC is defective.
Change it and check
again.

Casio PX-780 Specifications

General

Brand	Casio
Model	PX-780
Category	Handhelds
Language	English