Sharp UX-258TH, FO-475TH manual Troubleshooting, Att

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UX-258TH

FO-475TH

[3] Troubleshooting

Refer to the following actions to troubleshoot any of 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 A4-1, 2, 3, 4, 5. May be used in case [1] [2] [3].

•Decrease the transmission level SOFT SWITCH A4-1, 2, 3, 4, 5. May be used in case [3].

•Apply line equalization SOFT SWITCH A5-1, 2. May be used in case [1] [2] [3] [4].

•Slow down the transmission speed SOFT SWITCH A2-1, 2, 3, 4. May be used in case [2] [3].

•Replace the TEL/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.:

From: Mr.

Fax Tel No.:

Date:

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

Model:

G3

Phase: A, B, C, D.

Reception / Transmission

Automatic reception / Manual reception

Automatic dialing / Manual dialing / Others

Frequency:

%

ROM version:

Confirmation

Our customer

B1

Other party

Please mark problem with an X.

item

B2

No problem is: 0.

A1

A2

B1

B2

C1

C2

D1

D2

E1

E2

A1

A2

C1

D2

Transmission level setting is (

) dB at our

C2

E1

D1

customer

Transmission level (

) dBm

E2

Reception level (

) dBm

Our service

Other party's service

By level meter at B1 and B2

Comment

Countermeasure

**** Please attach the G3 data and activity report on problem. ****

* Please complete this report before calling the “TAC” hotline if problem still occurs.

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Contents Facsimile Il y a danger d’explosion s’ il y a remplacement incorrect Specifications Operation panel Transmittable documents Site selection InstallationUse of Document Carrier Sheet ConnectionsOriginal document support Loading the fax paperClearing a jammed document Clearing jammed fax paperFunction key menu Using the answering machineQuick reference guide Transmitting documentsAdjustments Diagnostic items Diagnostics and service soft switchOperating procedure Entering the diagnostic mode Check pattern mode Diagnostic items description Soft switch modeAging mode Signal send modeFlash memory check How to make soft switch settingEntry data receive Flash memory clearOption Soft switch descriptionData No. = X 60 sec = 5 min Recall times Binary input Light Dark Darker TEL 0~9 No. = CNG detection in STAND-BY mode Yes Fax switching when A.M. full Yes 10 ~ 25 dBm No. = 12 dB AGC eref access code line Reserved Speaker volume 5 stages Soft switch function description SW-B4 No Auto dial mode Delay timer of after line connect SW-A6 No CNG transmission in manual TX modeSW-B4 No Auto dial mode Delay timer of before line connect SW-B4 No Dial modeSW-E1 No CNG detect time at TEL/FAX mode SW-D1 No Automatic switching manual to auto receive modeSW-E1 No Tel/Fax Automatic switching mode SW-F2 No CNG detection in STAND-BY modeSW-H1 No Reserved SW-H2 No Fax switching when A.M. fullSW-I2 No Alarm during two way recording SW-H1 No Busy tone continuous sound detect timeSW-J2 No ~ No Speaker volume 5 stages SW-J1 No Sender’s phone number settingSW-J1 No , No Ringer volume SW-K1 No Entering Diag mode by pressing Speed keyTroubleshooting ATTG3 Reception Error code tableCommunication error code table G3 Transmission General description Cross section view Documents requiring use of document carrierDocument release General Recording block 5-1. General viewDisassembly and assembly procedures Handset cover and paper support guidePWB case top, bottom and PWB Screwdriver Hook CIS support 11 ,13 Stopper plate Operation panel unit and scanner frameDocument guide upper unit and head frame Document guide upper LCD PWB Operation panelGAP Hopper Guide R Guide L 1211 Drive unit, PWB and cutterRib Speaker and paper sensor leverDrive frame 1811PWB Wire treatmentTEL/LIU Block diagram CutterControl PWB Unit Wiring diagramPower Supply PWB Unit TEL/LIU PWB UnitPoint- to-point diagram Circuit description Circuit description of control PWB Description of each block Main control blockFC200 IC2 Terminal descriptions GPIO0 2XC Ledctl 4XCLcdcs 1XC GPIO1/SASTXD 2XCPanel control block Mechanism/recording control blockModem R96V24 block IntroductionR96V24 IC1 Hardware Interface Signals Pin Signals 100-Pin PqfpTEL/LIU block operational description Block diagramCircuit description of TEL/LIU PWB Circuit descriptionExternally connected TEL OFF Hook detection circuit section Signal/DTMF transmission level & receiving levelSignal selection CI detection circuitExample TEL speaking Circuit description of power supply PWB Circuit description of CIS unitCircuit Block ControlPWBMemory block 44PIN TsopModem IC3Other block 2902Video processing/Motor drive / Thermal block ULN2003AAnalog signal block IC5Control PWB parts layout Top side Control PWB parts layout Bottom side These marks are all safety-critical parts TEL/LIU PWB circuitTEL/LIU PWB parts layout Power supply PWB circuit NJM78M05FAPower supply PWB parts layout Operation panel PWB circuit IC101 74HC147Operation Flowchart ProtocolPower on sequence Relay board unit Service toolsList Description Relay board unit OFFShading paper IC7 VHiW24257S7LL W24257S-70LLT IC signal nameIC13 VHiULN2003AN/ ULN2003A IC3 VHiMC74HCU04FMC74HCU04F IC6, 10 VHiHCF4053M1T HCF4053BIC4 VHiMC34119DR2 MC34119DR2 IC11, 12 VHiLM2902D/-1 LM2902D IC8 VHi27C02015TiIC5 VHiHEF4051BT1 HEF4051BT IC100 VHiPST596CMT1 PST596CNRIC1 VHiR96FC20V24 R96V24 IC2 VHiR96FC20V24 FC200 IC1 VHiNJM2904D-1 NJM2904D