Table of Contents
Advertisement
5-7 Key Data Input
Check Initial operation
the pin 19,20,21,22 and 23
one of the keys is pushed,
one of pin 19,20,21,22 and 23 of
Flow chart of trouble shooting and Circuit Diagram
Yes
Are
of CN503 low?
Yes
When
CN503 is high ?
Yes
Key PCB is OK ?
Yes
END
No
Replace the PBA
No
Resolder pin 19,20,21,22 and 23
of CN503
No
Replace the Key PCB
5-12
Advertisement
Table of Contents
