Sharp FO-475TH, UX-258TH manual Soft switch function description

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• Soft switch function description

SW-A1 No. 1 Protect from echo

Used to protect from echo in reception.

SW-A1 No. 2 Forced 4800BPS reception

When line conditions warrant that receptions take place at 4800 BPS repeatedly.

It may improve the success of receptions by setting at 4800BPS.

This improve the receiving document quality and reduces handshake time due to fallback during training.

SW-A1 No. 3 Footer print

When set to "1", the date of reception, the sender machine No., and the page No. are automatically recorded at the end of reception.

SW-A1 No. 4 Length limitation of copy/send/receive

Used to set the maximum page length.

To avoid possible paper jam, the page length is normally limited to 0.6 meter for copy or transmit, and 1.5 meters for receive.

It is possible to set it to "No limit" to transmit a long document, such as a computer print form, etc. (In this case, the receiver must also be set to no limit.)

SW-A1 No. 5 CSI transmission

(CSI TRANSMISSION) is a switch to set whether the machine sends or does not send the signal (CSI signal) informing its own telephone No. to the remote fax. machine when information is received. When "nonsending" is set, the telephone No. is not output on the remote trans- mitting machine if the remote transmitting machine has the function to display or print the telephone No. of receiving machine, using this CSI signal.

SW-A1 No. 6 DIS receive acknowledgment during G3 transmission

Used to make a choice of whether reception of DIS (NSF) is acknowl- edged after receiving two DISs (NSFs) or receiving one DIS (two NSFs). It may be useful for overseas communication to avoid an echo sup- pression problem, if set to 1.

SW-A1 No. 7 Non-modulated carrier for V29 transmission modem

Though transmission of a non-modulated carrier is not required for trans- mission by the V29 modem according to the CCITT recommendation, it may be permitted to a send non-modulated carrier before the image signal to avoid and echo suppression problem. It may be useful for over- seas communication to avoid an echo suppression problem, if set to 1.

SW-A1 No. 8 EOL (End Of Line) detect timer

Used to make a choice of whether to use the 25-second or 13-second timer for detection of EOL.

This is effective to override communication failures with some facsimile models that have longer EOL detection.

SW-A2 No. 1 ~ No. 4 Modem speed

Used to set determine the initial modem speed. The default is 9600BPS. It may be necessary to program it to a slower speed when frequent line fallback is encountered, in order to save the time required for fallback procedure.

SW-A2 No. 5 Sender’s information transmit

(SENDER’S INFORMATION TRANSMISSION) is a switch to set the function to print the content of HEADER PRINT described in the passcode list at the front end of receiver’s original when original is sent to the remote machine.

If this switch is set to "NO", the HEADER PRINT is not output at the receiving machine.

SW-A2 No. 6 H2 mode

Used to determine reception of H2 mode (15 sec transmission mode). When set to OFF, H2 mode reception is inhibited even though the trans- mitting machine has H2 mode function.

UX-258TH

FO-475TH

SW-A2 No. 7 Communication error treatment in RTN sending mode (Reception)

Used to determine communication error treatment when RTN is sent by occurrence of a received image error in G3 reception. When it is set to "1", communication error is judged as no error.

SW-A2 No. 8 CNG transmission

When set to "0" , this model allows CNG transmission by pressing the Start key in the key pad dialing mode. When set to "1", CNG transmis- sion in the key pad dialing mode cannot be performed. In either case, CNG transmission can be performed in the auto dial mode.

SW-A3 No. 1, No. 2 CED tone signal interval

For international communication, the 2100Hz CED tone may act as an echo suppression switch, causing a communication problem.

Though SW-A3 No. 1 and No. 2 are normally set to 0, it should be changed this time between the CED tone signal to eliminate the communication problem caused by echo.

TX RX

CED

T

DIS

SW-A3 No. 3 MR Coding

Used to select the MR coding enable or disable.

SW-A3 No. 4 ~ No. 8 Reserved

Set to "0".

SW-A4 No. 1 ~ No. 5 Signal transmission level

Used to control the signal transmission level in the range of-0dB to- 31dB.

The factory setting is at -8dB (MODEM output).

SW-A4 No. 6 Protocol monitor (Error print)

If set to "1", protocol is printed at communication error.

SW-A4 No. 7 Protocol monitor

Normally set to "0". If set to "1", communication can be checked, in case of troubles, without using a G3 tester or other tools.

When communication FSK data transmission or reception is made, the data is taken into the buffer. When communication is finished, the data is analyzed and printed out. When data is received with the line monitor (SW-A4 No. 8) set to "1" the reception level is also printed out.

SW-A4 No. 8 Line monitor

Normally set to "0". If set to "1", the transmission speed and the recep- tion level are displayed on the LCD. Used for line tests.

SW-A5 No. 1, No. 2 Digital line equalization setting (Reception)

Line equalization when reception is to be set according to the line char- acteristics.

Setting should be made according to distance between the telephone and the telephone company central switching station.

SW-A5 No. 3 ~ No. 6 Reserved

Set to "0".

SW-A5 No. 7 Error criterion

Used to select error criterion for sending back RTN when receiving im- age data.

SW-A5 No. 8 Anti junk fax check

When use the Anti junk fax function, set to "1".

SW-A6 No. 1 Auto gain control (MODEM)

When this mode is enabled, if the reception signal level is under 31dBm. The modem itself controls the signal gain automatically.

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Contents Facsimile Il y a danger d’explosion s’ il y a remplacement incorrect Specifications Operation panel Transmittable documents Use of Document Carrier Sheet InstallationSite selection ConnectionsLoading the fax paper Original document supportClearing jammed fax paper Clearing a jammed documentQuick reference guide Using the answering machineFunction key menu Transmitting documentsAdjustments Diagnostics and service soft switch Operating procedure Entering the diagnostic modeDiagnostic items Aging mode Diagnostic items description Soft switch modeCheck pattern mode Signal send modeEntry data receive How to make soft switch settingFlash memory check Flash memory clearSoft switch description DataOption 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 before line connect SW-A6 No CNG transmission in manual TX modeSW-B4 No Auto dial mode Delay timer of after line connect SW-B4 No Dial modeSW-E1 No Tel/Fax Automatic switching mode SW-D1 No Automatic switching manual to auto receive modeSW-E1 No CNG detect time at TEL/FAX mode SW-F2 No CNG detection in STAND-BY modeSW-I2 No Alarm during two way recording SW-H2 No Fax switching when A.M. fullSW-H1 No Reserved SW-H1 No Busy tone continuous sound detect timeSW-J1 No , No Ringer volume SW-J1 No Sender’s phone number settingSW-J2 No ~ No Speaker volume 5 stages SW-K1 No Entering Diag mode by pressing Speed keyATT TroubleshootingError code table Communication error code table G3 TransmissionG3 Reception General description Document release General Documents requiring use of document carrierCross section view Recording block 5-1. General viewHandset cover and paper support guide Disassembly and assembly proceduresPWB case top, bottom and PWB Operation panel unit and scanner frame Screwdriver Hook CIS support 11 ,13 Stopper plateDocument guide upper unit and head frame Document guide upper Operation panel GAP Hopper Guide R Guide LLCD PWB Drive unit, PWB and cutter 1211Speaker and paper sensor lever Rib1811 Drive frameWire treatment TEL/LIUPWB Cutter Block diagramPower Supply PWB Unit Wiring diagramControl PWB Unit TEL/LIU PWB UnitPoint- to-point diagram Circuit description Description of each block Main control block Circuit description of control PWBFC200 IC2 Terminal descriptions Lcdcs 1XC Ledctl 4XCGPIO0 2XC GPIO1/SASTXD 2XCMechanism/recording control block Panel control blockIntroduction Modem R96V24 blockPin Signals 100-Pin Pqfp R96V24 IC1 Hardware Interface SignalsCircuit description of TEL/LIU PWB Block diagramTEL/LIU block operational description Circuit descriptionSignal selection Signal/DTMF transmission level & receiving levelExternally connected TEL OFF Hook detection circuit section CI detection circuitExample TEL speaking Circuit description of CIS unit Circuit description of power supply PWBControlPWB Circuit Block44PIN Tsop Memory blockIC3 Modem2902 Other blockULN2003A Video processing/Motor drive / Thermal blockIC5 Analog signal blockControl PWB parts layout Top side Control PWB parts layout Bottom side TEL/LIU PWB circuit These marks are all safety-critical partsTEL/LIU PWB parts layout NJM78M05FA Power supply PWB circuitPower supply PWB parts layout IC101 74HC147 Operation panel PWB circuitProtocol Operation FlowchartPower on sequence Service tools ListRelay board unit OFF Description Relay board unitShading paper IC13 VHiULN2003AN/ ULN2003A IC signal nameIC7 VHiW24257S7LL W24257S-70LLT IC3 VHiMC74HCU04FMC74HCU04F IC6, 10 VHiHCF4053M1T HCF4053BIC5 VHiHEF4051BT1 HEF4051BT IC11, 12 VHiLM2902D/-1 LM2902D IC8 VHi27C02015TiIC4 VHiMC34119DR2 MC34119DR2 IC100 VHiPST596CMT1 PST596CNRIC1 VHiR96FC20V24 R96V24 IC1 VHiNJM2904D-1 NJM2904D IC2 VHiR96FC20V24 FC200