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.
Item
Symptom
No.
Cannot send dial
number from 10
key pad
10 Any improvement after
Cause
1
Is the external telephone off-
hook?
2
Is the line type specified cor-
rectly?
3
Dial by 10 key?
4
Did you register the phone
number?
5
Any improvement after
replacing NCU board?
6
Any improvement after
replacing the cable between
NUC and FAX1?
7
Any improvement after
replacing FAX1 board?
8
Any improvement after
replacing MFB2 board?
9
Any improvement after
replacing AOP board?
replacing the cable between
AOP and MFB2?
T-15
Remedy
YES Go to item 2
NO Set the handset on-hook.
YES Go to item 3.
Specify the line type (PB, 10,
NO
20 PPS) correctly.
YES Go to item 5.
NO Go to item 4.
YES Go to item 5.
NO Register the phone number.
YES Replace NUC board.
NO Go to item 6.
Replace the cable between
YES
NUC and FAX1.
NO Go to item 7.
YES Replace FAX1 board.
NO Go to item 8.
YES Replace MFB2 board.
NO Go to item 9.
YES Replace AOP board.
NO Go to item 10.
Replace the cable between
YES
AOP and MFB2.
NO Replace the PWB-A
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