Troubleshooting - Sharp FO-155 Service Manual

FO-155A
FO-355A
[3] Troubleshooting
Refer to the following actions to troubleshoot any of problems men-
tioned in
1-4.
[1] A communication e rroroccurs.
[2] Imagedistortionproduced.
[3] Unableto do overseas communication.
[4] Communication s peedslowdueto FALLBACK.
Increase the transmission
level
SOH SWITCHA2-5,6,7,8.
Maybe
used in case [1] [2] [3].
Decrease the transmission level SO~
SWITCHA2-5,6, 7, 8.
Maybe usedin case[3].
Applylineequalization SO~ SWITCHAl-1.
Maybe usedin case[1] [2] [3] [4].
Slowdownthe transmission
speed SO~
SWITCH Al-4, 5.
Maybe
used
in case[2] [3].
ReplacetheTEL/LIUPWB.
Maybe usedin all cases.
Replacethe controlPWB.
Maybe usedin all cases.
* If transmission problemsstill existon the machine,usethe follow-
ingformatandcheckthe relatedmatters.
TO:
ATT:
Ref.No. :
----------------------------------------------------------------------------------------------------------------------
cc:
A~:
Date :
----------------------------------------------------------
------------------------------------------------------------
FM:
Dept :
-----------------------------------------------------------------------------------------------------------------
----—
~Sign :
----------------------------------------------------------------------------------------------------------------------
**** Facsimile communication p roblem ****
I
Ref.No.:
From: Mr.
------------------------------
Fax Tel No.:
Date:
Ourcustomer
Name
Tel No.
------------------------------------------------------------------------------------------------------,
Address
FaxNo.
------------------------------------------------------------------------------------------------------,
Contactperson
Modelname
Otherparty
Name
Tel No.
--------------------------------------------------------------------------------------------------
Address
----.
FaxNo.
-------------------------------------------------------------------------------------------------------
Contactperson Modelname
Problemmode Line:Domestic / international Model: G3 Phase:A, B, C, D.
Reception /Transmission Automaticreception / Manualreception
Automatic dialing/ Manualdialing/Others
Frequency:
70
ROMversion:
Confirmation Pleasemarkproblemwithan X.
item
Ourcustomer Otherpatty
No problemis: O.
4
Al A2
B1 B2 cl
C2
DI D2 El E2
---- ---- ---- ----- ----- ----- ---
ZCA2 :
::s :me :;-
Transmtsston level setting is ( ) dB at our
El
4
E2
Transmission level( ) dBm
Our service Other party's service
Reception level ( ) dBm
By level meter at
B1 andB2
Comment
----------------
------------------------------------------------------------------------------------------------------
Countermeasure
'*** Pleaseattachthe G3dataandactivityreporton problem. ***
m,– . . . .. . . .
riease
compiele tnts
reportbeforecallingthe
"TAC" hotline if problem still
occurs.
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