Panasonic JB-3300 Technical Manual page 68

[3]
Keyboard Section
[3.1]
Keyboard Error
after Power ON
+5 VDC.
Power on Self-Diagnosis Error
II.
5.10
\ Signal OK
SS
Replace ICP
C *KBCLK" )
S
*KBDATA
Keyboard Inter-
face (8255-5) |
ML
Signal —
OK?
"KBDATA" +)
No Key Inputs Available
Missed Key Input
Figure 9-11
53
(1/2)