FO-4400U
FO-CS1
[3] Troubleshooting
1. Fax troubleshooting
Refer to the following actions to troubleshoot any of the problems men-
tioned 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.
•
Increase the transmission level SOFT SWITCH 8-4, 5, 6, 7, 8
May be used in case [1] [2] [3].
•
Decrease the transmission level SOFT SWITCH 8-4, 5, 6, 7, 8
May be used in case [3].
•
Apply line equalization SOFT SWITCH 8-1, 2
May be used in all cases.
•
Slow down the transmission speed SOFT SWITCH 6-5, 6, 7, 8
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 following
format and check the related matters.
TO:
ATT:
Ref.No. :
CC:
ATT:
Date
:
FM:
Dept
:
Sign
:
***** Facsimile communication problem *****
Ref.No.:
Date:
From: Mr.
Fax Tel No.:
Our customer
Name
Tel No.
Address
Fax No.
Contact person
Model name
Other party
Name
Tel No.
Address
Fax No.
Contact person
Model name
Problem mode
Line: Domestic / international
Mode: 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 party's service
2 – 35
Summary of Contents for FO 4400 - B/W Laser - All-in-One
Page 125: ...FO 4400U FO CS1 Control PWB parts layout Top side 6 16 ...
Page 126: ...FO 4400U FO CS1 Control PWB parts layout Bottom side 6 17 ...
Page 128: ...FO 4400U FO CS1 LIU PWB parts layout Top side 6 19 ...
Page 129: ...FO 4400U FO CS1 LIU PWB parts layout Bottom side 6 20 ...
Page 132: ...FO 4400U FO CS1 Printer PWB parts layout Top side 6 23 ...
Page 133: ...FO 4400U FO CS1 Printer PWB parts layout Bottom side 6 24 ...
Page 143: ...FO 4400U FO CS1 M E M O 6 34 ...