User Guide

PAMS
Technical Documentation
RAE-3
8. Troubleshooting
Page 8 – 77
Issue 1 06/01
NOYES
OK?
Cycle the power, retry
OK?
CSP filters Z401 to Z404
Check, replace
Problem with QWERTY
keypad _2
Connect ROW0 to COL0
Measure the short circuit with oscilloscope
Signal rise and fall times between 80 to 120 ns,
Repeat for each ROW– COL pair.
Switch the power on, wait for reboot
Connect Flex and UI module to the jig.
Push the faulty key, check the column signal.
Signal rise/fall time 120 to 200 ns? (1)
NO
D300 faulty
YES
constant activity?
If no activity or rise/fall times our of range
CSP filters Z401 to Z404
check
OK?
YES
Figure 64.
Table 1. Keyboard matrix (keys on UL2 module highlighted) – English keymat
Col0 Col1 Col2 Col3 Col4 Col5 Col6 Col7 Col8 Col9
Row0 cmt
Soft1
cmt
Up
cmt
Soft2
pda
Soft 3
pda
Soft 1
Space Info < / >
Row1 cmt
Send
cmt
Down
cmt
End
pda
Soft 4
pda
Soft 2
Z Shift C B
Row2 cmt 1 cmt 2 cmt 3 cmt
Profile
cmt
Power
Chr N M , @
Row3 cmt 4 cmt 5 cmt 6 cmt * cmt # Menu Up Right Down Left
Row4 cmt 7 cmt 8 cmt 9 cmt 0 :; +– Back-
space
Enter
Row5 ESC App1 App2 App3 app4 App6 App7 App8
Row6 Ctrl V X 6 App5
Row7 1 2 3 4 5 7 8 9 0 P
Row8 Tab Q W E R T Y U I O
Row9 Caps A S D F G H J K L