Service manual

FO-IS125N
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[3] Troubleshooting
Refer to the following actions to troubleshoot any of the problems
mentioned in 1-4.
[1] A communication error occurs.
[2] Image distortion produced.
[3] Unable to do overseas communication.
[4] Communication speed slow due to FALLBACK.
• In crease the transmission level SOFT SWITCH SW5-2, 3, 4, 5.
May be used in case [1] [2] [3].
• Decrease the transmission level SOFT SWITCH SW5-2, 3, 4, 5.
May be used in case [3].
• Apply line equalization SOFT SWITCH SW5-2, 3, 4, 5.
May be used in case [1] [2] [3] [4].
• Slow down the transmission speed SOFT SWITCH SW5-2, 3, 4, 5.
May be used in case [2] [3].
• Replace the LIU PWB.
May be used in all cases.
• Replace the control PWB.
May be used in all cases.
• If transmission problems still exist on the machine, use the follow-
ing format and check the related matters.
TO: ATT: Ref.No. :
CC: ATT: Date :
FM: Dept :
Sign :
* Please complete this report before calling the "TAC" hotline if problem still occurs.
***** Facsimile communication problem ***** Ref.No.:
Date:From: Mr. Fax Tel No.:
Our customer Name Tel N o .
Address Fax No.
Contact person Model name
Other party Name Tel N o .
Address Fax No.
Contact person Model name
Problem mode Line: Domestic / international Model: G3 Phase: A, B, C, D.
Reception / Transmission
Automatic reception / Manual reception
Automatic dialing / Manual dialing / Others
Frequency: % ROM version:
Confirmation
item
Please mark problem with an X.
No problem is: 0.
A1 A2 B1 B2 C1 C2 D1 D2 E1 E2
Transmission level setting is ( ) dB at our
customer
Transmission level ( ) dBm
Reception level ( ) dBm
By level meter at B1 and B2
Comment
**** Please attach the G3 data and activity report on problem. ****
Countermeasure
Our customer
Our service
A1 A2
C1 D2
B1
B2
E1
E2
C2 D1
Other party
Other
p
art
y
's service