Toshiba GD-1160, GD-1260, GD-1250, GD-1270, GD-1210 Line 1 Current Detection Signal IC29 IC26

Page 78

EU/AU/AS/C models

NCU board

FAX board

 

 

 

 

 

1

 

8

 

 

 

 

 

 

IC2

 

 

 

 

 

 

 

Line current

 

 

 

 

 

 

 

detection

 

Line

CN3

4

Lb

R26

2

IC

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 4-10

19

20

CN4

CN501

19 REVA1 2

20 REVB1 3

IC29

[IC26]

ASIC

The line current detection circuit consists of the line current detection IC (IC2), ASIC (IC29 [IC26]) on the FAX board, and the other peripheral devices. It detects a dial tone and the hook status of the exter- nal telephone from the current flowing through the line.

When a dial tone is input from the telephone line, current flows through the line. The line current detec- tion IC sends REVA1 and REVB1 to the ASIC as pulse signals. This allows a dial tone to be detected.

Signal Name

Type

Active

Description

Destination

 

 

 

 

 

REVA1

I

-

Line 1 Current Detection Signal

IC29 [IC26]

 

 

 

 

 

REVB1

I

-

Current Reverse Line 1 Current Detection

IC29 [IC26]

 

 

 

Signal

 

 

 

 

 

 

*Values in [ ] are for GD-1250/1270 in case that the descriptions vary between GD-1210 and GD- 1250/1270.

GD-1210/1250/1270/1160/1260

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ELECTRICAL CIRCUITS

 

4 - 10

08/04

Image 78
Contents GD-1210/1250/1270/1160/1260 Trademarks Transportation/Installation General Precautions at Service When the option has been installed VorsichtPage Contents Installation Explanation to the UsersFAX Options Models FAX unit 2nd line for FAX unitSpecifications Original sizeFolio Embedded DBm to -8 dBm The setting can be changed by 1 dBTransmission system DBm to 0 dBm Level -55 dBm or lower cannot be detectedPaper size Dimension width x length Printing area ST-RComp Features 11/04 Accessory GD-1210 GD-1250 GD-1270 Accessories and PartsFollowing accessories and parts come with the FAX unit Parts GD-1210 GD-1250 GD-1270Extends the FAX functions when the FAX unit is installed OptionsOption Function STUDIO206L/256/306/356 Ments to be outputSystem List STUDIO2500c/3500c/3510cSTUDIO2330C/2820C/2830C/3520C/3530C/4520C NA/AU/EU/C/TWSTUDIO5520C/6520C/6530C STUDIO205L/255/305/355/455 Offset Tray MJ-5005STUDIO555/655/755/855 NA/EU-N/AU/CSTUDIO2040C/2540C/3040C/3540C/4540C Pedestal PFP Feeder LCF KD-1027/C KD-1028 A4/LT/CSTUDIO5540C/6540C/6550C STUDIO556/656/756/856 STUDIO206L/256/306/356/456 Saddle stitch Finisher MJ-1106/CInner Finisher MJ-1032 Saddle stitch MJ-1033 LINE2 connector Line connector TEL connector OverviewReversing automatic document feeder Line connector TEL connectorDrawers STUDIO5520C/6520C/6530C, e-STUDIO5540C/6540C/6550C Power switch TEL connector Line connector LINE2 connector STUDIO205L/255/305/355/455, e-STUDIO206L/256/306/356/456Power switch LINE2 connector Line connector TEL connector STUDIO555/655/755/855, e-STUDIO556/656/756/856FAX FAX PWR Symbol Name FunctionLayout of PC Boards NCU MDM FAX FAX PWRRecording Mode LSU-RELATED FunctionsRecording Paper Selection Algorithm and Printing Algorithm Recording paper selection algorithmPrinting algorithm ST against A3/B4/A4/LD/LT size originals respectively Effective printing length Discard function Length of B Discard parameter Set valueOFF B4, A3 A4, B4 B5, B4 A5, A4 A5 , Comp LT, Comp COMP, LD LG/LT, LD ST, Folio B5, FolioSetting for the split recording Recording Paper and Function Table of the recording paper selection modes OthersPriority Receiving FAX document, or by Energy Saver ModeUser Functions Energy SaverMemory Reception YES Circuit Connection and Procedure to Change ModeDial call-up transmission to a telephone circuit Standby stateCommunication mode Toshiba original procedure Selection of the communication modeProcedure to select the transmission mode Telephone circuitThis signal can be sent manually Signal form Signaling System Diagram and Signal FormsCircuit control signals Signal name Signal formCommunication with the binary signals Mode change possible Informing that there is the next Image signalMode change is possible only for the original set manually ReceiverOnly error frame retransmitted 1 completed 2 completed Frames received Error occurredCFR JOB Status button Cancel buttonCED Nsfcsidis MCFBinary signals PRI-EOM PIPPIN PRI-MPSWhen this frame is the last frame, X = FCF FIF FCSFormat FCF format of each binary signal Binary signal Format9600 bps, 7200 bps 4800 bps, 2400 bpsTCF 3 V.8/V.34 communication sequence Standard procedure Transmitter Receiver Line closedSignal name Abbreviation Function Remarks 150 Hz Tone signal betweenHz and 3,750 Hz in units Data transmissionTRN ALTReceives an NSF sent from FlagMaintains the synchroniza 7E H Tion TransmitterIs completed Image data Image data are sent. TransmitterScrambled data frame to be Encoded image data Turn off Scrambled 1 is sent forTransmission of one Is completed Flag Short training SignalPPS-EOP Informs to disconnect the lineLine closed DIS cannot be recognized Transmitter Receiver Transmitter Receiver DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control FAX mode FAX Automatic SwitchingTEL mode General functionsConfiguration GD-1210 GD-1160GD-1250 / GD-1270 GD-1260 Configuration Description of CircuitsEU/AU/AS/C models CML1 Line path switching control circuitSignal Name Type Active Description Destination ATT3DB1RLY3, IC3 IC3IC5 Line 1 Dial Pulse Generation Signal Q53 Dial pulse generation circuitLine 1 Dial Pulse Generation Signal Line current detection circuit Line Current Detection Signal IC29 IC26Line Reverse Current Detection Signal IC29 IC26 REVA1Line 1 Current Detection Signal IC29 IC26 Current Reverse Line 1 Current Detection IC29 IC26 SignalLine 1 CI Detect Signal IC29 IC26 CI detection circuitLine 1 CI Detection Signal IC29 IC26 Line monitor circuit NCU board Line1Line Monitor Monitoring signalRinger/Alarm LOW HighRelation between the signals and sound volume is as follows Sound volumePC Boards PWA-F-FAX-631 GD-1210PWA-F-FAX-670 GD-1250/1270 08/04 08/04 PWA-F-MDM-563 GD-1160 PWA-F-MDM-671 GD-1260 PWA-F-FAX-POWER-631 GD-1210 Electrical Circuits Installation Explanation to the UsersInstallation
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