Toshiba GD-1151, GD-1260, GD-1160 Monitoring signal, Line Monitor, LOW High, Ringer/Alarm, Low

Page 78

EU/AU/AS/C models

NCU board (Line1)

RLY3

CML relay

 

 

 

 

 

 

 

IC6

 

 

 

 

 

 

4

Lb

1

5

T1

1

2

 

 

 

1

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

Line

CN3

 

1

8

 

 

 

IC3

 

 

 

 

 

 

 

 

 

 

 

IC4

 

 

 

3

La

9

 

 

 

 

Analog

 

 

CN4

 

 

 

0

 

 

 

 

6

7

2

 

 

 

 

 

 

 

switch

 

 

 

 

 

 

IC6

 

 

 

 

 

 

+12V

 

AG

R11 1

 

 

 

 

 

 

 

 

1

12

5

7

1

15

 

6

 

 

 

 

 

 

2

0

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

1

14

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11

10

 

 

 

 

 

 

 

 

Q4

 

 

 

 

 

 

 

 

 

 

 

 

AG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NCU board (Line2)

Speaker

SP+

SP-

FAX board

 

1

TXOUT1

 

 

CN501

2

RXIN1

 

2

 

 

 

 

 

1

 

6

 

 

 

 

 

3

 

 

 

 

 

 

 

 

13

14

 

 

 

 

 

R273

 

 

 

 

14

 

 

 

 

 

 

R272

 

 

 

 

15

 

 

 

 

 

 

R271

CN502

2

RXIN2

 

12

 

 

 

 

 

 

 

 

 

R270

 

 

 

IC9

1

 

 

 

 

[IC2]

 

 

 

 

 

Analog

 

R268

 

 

 

5

 

 

 

 

switch

 

 

 

 

 

 

 

R267

 

 

 

 

2

 

 

 

IC10[IC1]

 

R266

CN503

1

5

3

4

 

2

 

 

 

 

 

 

SG

 

11 AG

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

9

 

IC3

Analog

switch

28,29[25,26]

IC12

 

 

[IC9]

32[9]

MODEM

 

 

 

 

 

 

IC45

12

RING

43

[IC12]

 

 

 

CPU

9

MF-SEL

6

 

 

 

10

SP-SEL

15

 

11

MON

26

 

 

ATT3DB1

22

IC29

 

[IC26]

 

CML1

21

 

 

 

 

 

ASIC

 

VOLSEL0

16

 

 

VOLSEL1

17

 

 

VOLSEL2

18

 

 

 

 

 

Fig. 4-16

The line monitor circuit consists of the CML relay (NA/TW: RLY2, EU/AU/AS/C: RLY3), analog switch

(NA/TW: IC51, EU/AU/AS/C: IC3), the ASIC (IC29 [IC26]) and analog switches (IC3, IC9 [IC3, IC2]) on the FAX board, and other peripheral devices. It switches the telephone line path using the analog switch and monitors the line status and ringer signal in the FAX transmission and reception using the speaker connected to CN503 on the FAX board. It also switches the analog switch to output a buzzer tone from the speaker.

The signal to be monitored is selected by switching the analog switch (IC3) according to SP-SEL signal and MON signal which are output from the ASIC.

To monitor the line during the transmission and reception, the ASIC makes the CML1 signal become HIGH to switch the analog switch and connect the line to the MODEM side.

For the line path switching control, refer to

P. 4-7 "4.2.2 Line path switching control circuit".

The relation between the signal levels and monitoring signals is as follows.

 

Monitoring signal

SP-SEL

MON

 

 

 

 

 

LINE Monitor

 

Line 1

LOW

HIGH

 

 

 

 

 

 

 

Line 2

HIGH

HIGH

 

 

 

 

 

Ringer/Alarm

 

 

-

LOW

 

 

 

 

 

The monitoring signal selected by IC3 is input to the analog switch (IC9 [IC2]) to select the output sound volume. The sound volume is selected by switching IC8 according to the VOLSEL0-2 signals output from the ASIC and selecting an input resistance for the monitoring signal.

GD-1150/1151/1200/1201/1160/1260

© 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved

ELECTRICAL CIRCUITS

 

4 - 16

08/03

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Image 78
Page 77 Page 79
Contents GD-1150/1151/1200/1201/1160/1260 Trademarks Model Weight Number of people STUDIO3511/4511STUDIO281c/351c/451c Service of Machines Precautions against Static Electricity Page Contents 2003 2008 Toshiba TEC Corporation All rights reserved FAX Options FAX unit 2nd line for FAX boardSpecifications 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 detectedDimension width x length Printing area CompFeatures Specifications and Outline of System Accessories and Parts Following accessories and parts come with the FAX unitQty STUDIO281c/351c/451c OptionsSTUDIO230/280 Option Function ModelSTUDIO352/353/452/453 STUDIO202L/203L/232/233/282/283 seriesGD-1260NA/TW/EU/C System List GD-1150NA/TW/EU AU/AS/CGD-1150NA/TW/EU Bridge Kit KN-3511 FAX Board GD-1200 Finisher Hanging type e-STUDIO352/353 only MJ-1022 GD-1150NA/TW/EU AU/AS/C/KR Units and Components FAX MDM NCU Symbol Name Function RemarksLayout of PC Boards FAXMDM FAX FAX PWR NCU FAX power board Supplies the power -12V, +24VSTUDIO281c/351c/451c, e-STUDIO352/353/452/453 FAX control board Controls the FAX functionSpecifications and Outline of System Recording 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 DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control FAX mode FAX Automatic SwitchingTEL mode General functionsConfiguration Electrical CircuitsFAX PWR STUDIO202L/203L/232/233/282/283 GD-1151 GD-1260 95C265 4Mbit x MN86064 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-562 / PWA-F-FAX-610PWA-F-FAX-670 PWA-F-NCU-US-562/PWA-F-NCU-631-US PWA-F-NCU-EU-562/PWA-F-NCU-631-EU PWA-F-MDM-563PWA-F-FAX-POWER-610 PWA-F-MDM-631PWA-F-FAX-POWER-631 Electrical Circuits Installation Explanation to the UsersInstallation
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