Olivetti FK-507 Service Manual page 109

8. Troubleshooting
Item
Symptom
No.
Cannot send 1
Is the external telephone in on-
dial number
hook status?
from 10 key
2 Is the line type specified cor-
pad
rectly?
3
Did you enter by 10-key full dial-
ing?
4 Did you register the phone num-
ber?
5 Any improvement after replacing
MFBU - FAX cable?
6 Any improvement after replacing
FAXU board?
7 Any improvement after replacing
MFBU board?
8 Any improvement after replacing
operating panel?
9 Any improvement after replacing
the cable between operating
panel and BCRU board?
Cannot moni- 1 Is the sound volume switch OFF? YES Select a sound volume switch other
tor communi-
cation
2 Is S/W SW set line monitoring?
3 Any improvement after replacing
the speaker?
4 Any improvement after replacing
FAXU board?
5 Any improvement after replacing
MFBU board?
6 Any improvement after replacing
operating panel?
7 Any improvement after replacing
the cable between speaker and
BCRU board?
102
Cause
YES Go to item 2
NO Set the handset on-hook.
YES Go to item 3.
NO Specify the line type (MF, 10, 20 PPS)
YES Go to item 5.
NO Go to item 4.
YES Go to item 5.
NO Register the phone number.
YES Replace the MFBU - FAX cable.
NO Go to item 6.
YES Replace FAXU board.
NO Go to item 7.
YES Replace MFBU board.
NO Go to item 8.
YES Replace operating panel.
NO Go to item 9.
YES Replace the cable between operating
NO Replace the machine.
NO Go to item 2
YES Go to item 3.
NO Set S/W SW.
YES Replace the speaker.
NO Go to item 4.
YES Replace FAXU board.
NO Go to item 5.
YES Replace MFBU board.
NO Go to item 6.
YES Replace operating panel.
NO Go to item 7.
YES Replace the cable between speaker
NO Replace the machine.
Service Manual
Field Service Ver. 2.0 Dec. 2008
Remedy
correctly.
panel and BCRU board.
than OFF.
and BCRU board.
Y109971-7