Sharp FO-2970M Service Manual - Page 31

] Troubleshooting

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[3] Troubleshooting 1. Fax 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. • 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]. FO-2970MU • 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: CC: ATT: FM: Ref.No. : Date : Dept : Sign : From: Mr. Our customer Other party Problem mode Frequency: Confirmation item ***** Facsimile communication problem ***** Fax Tel No.: Name Address Contact person Name Address Contact person Line: Domestic / international Mode: G3 Reception / Transmission Automatic reception / Manual reception Automatic dialing / Manual dialing / Others % ROM version: Our customer B1 B2 Other party Comment A1 A2 C1 D2 C2 E1 D1 E2 Our service Other party's service Tel No. Fax No. Model name Tel No. Fax No. Model name Phase: A. B. C. D. Ref.No.: Date: Please mark problem with an X No problem is: 0 A1 A2 B1 B2 C1 C2 D1 D2 E1 E2 Transmission level setting is ( customer Transmission level ( ) dBm Reception level ( ) dBm By level meter at B1 and B2 ) dB at our Countermeasure **** Please attach the G3 data and activity report on problem. **** 2 - 27

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FO-2970MU
2 – 27
[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