Trouble Shooting - Sharp FO-3700 Service Manual

Refer to the following actions to troubleshoot any of problems men-
tioned in l-6.
A communication error evoked.
Image distortion produced.
Unable to do overseas communication
Communication speed slow liable to failback.
Increase the transmission level SOFT SWITCH 7-5 6 7 8
l
Can be used in case [1] [2] [3]
Decrease the transmission level SOFT SWITCH 7-5 6 7 8
l
Can be used in case [3]
From: Mr.
Our customer Name
Address
Contact person
Other party
Name
Address
Contact person
Problem mode
Line: Domestic / international
Reception /Transmission
Frequency:
Confirmation
Our customer
item
Our service
Comment
Counter-measure
Fax Tel No.:
Mode:
Automatic reception / Manual reception
Automatic dialling /Manual dialling / Others
%
E l
E2
.
Apply line equalization SOFT SWITCH 2-5
l
Can be used in all cases.
Slow down the transmission speed SOFT SWITCH 14-5 6 7 8
l
Can be used in case [2] [3]
Replace the LIU PWB.
l
Can be used in all cases.
Replace the control PWB.
l
Can be used in all cases.
* If transmission problems still exist on the machine, use the follow-
ing format and check the related matters.
G3
ROM version:
Please mark problem with an X
Other party
No problem is: 0
Al
Transmission level setting is (
customer
Transmission level (
Other party's service Reception level (
By level meter at Bl and B2
2 - 1 3
Date:
Tel No.
Fax No.
Model name
Tel No.
Fax No.
Model name
Phase: A. 8. C. D.
A2 Bl B2 Cl C2 Dl
) dB at our
) dBm
) dBm
D2 El E