Description of Circuits, Configuration | Toshiba GD-1201, GD-1260

4.2Description of Circuits

4.2.1Configuration

This section describes the function of each circuit.

The NCU board consists of the transformer, relay, analog switch and other peripheral devices. It con- trols switching of the line path, generates the dial pulses, detects the line current and ring signal, and monitors the line.

The NCU board is connected to CN501 on the FAX board. It can be also connected optionally to CN502.

The description in this section is based on the NCU board for Line 1.

NA/TW models

		NCU board
								REVA
								REVB
			Line current			IC53
		Lb	Line current	T1				TXOUT
		Lb	detection	T1				TXOUT
	CN10		detection
Line	CN10		circuit
Line
		La			IC51
		La
				IC53	Analog	IC52
				AG	Analog			RXIN
				AG	switch			RXIN
					switch
				~
				DB1		IC52
						IC52	CNG signal
			-	+			CNG signal	ANSDET
			-	+			detection	ANSDET
							detection
							circuit
				~
				Dial pulse				LD
				generation				LD
				generation				CN9
		a2		circuit				CN9	FAX board
		a2		circuit					FAX board
External	CN11			DC
telephone	CN11	b2		consumption				ATT3DB
		b2		circuit
				circuit
								CML
				1
				0
				1
				0
				RLY2
				CML relay
				Ring signal				CI
				detection				CI
				detection
				circuit
				Fig. 4-5

4

© 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved	GD-1150/1151/1200/1201/1160/1260
	ELECTRICAL CIRCUITS

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Toshiba GD-1201, GD-1260, GD-1160, GD-1151, Model: GD-1150 service manual Description of Circuits, Configuration

Contents

GD-1150/1151/1200/1201/1160/1260 Trademarks STUDIO3511/4511 Model Weight Number of peopleSTUDIO281c/351c/451c Service of Machines Precautions against Static Electricity Page Contents 2003 2008 Toshiba TEC Corporation All rights reserved FAX unit 2nd line for FAX board FAX Options Original size SpecificationsFolio DBm to 0 dBm Level -55 dBm or lower cannot be detected DBm to -8 dBm The setting can be changed by 1 dBTransmission system Embedded Comp Dimension width x length Printing area Features Specifications and Outline of System Following accessories and parts come with the FAX unit Accessories and PartsQty Option Function Model OptionsSTUDIO230/280 STUDIO281c/351c/451c STUDIO202L/203L/232/233/282/283 series STUDIO352/353/452/453GD-1260NA/TW/EU/C GD-1150NA/TW/EU AU/AS/C System List GD-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 Symbol Name Function RemarksLayout of PC Boards FAX MDM NCU FAX control board Controls the FAX function FAX power board Supplies the power -12V, +24VSTUDIO281c/351c/451c, e-STUDIO352/353/452/453 MDM FAX FAX PWR NCU Specifications and Outline of System LSU-RELATED Functions Recording Mode Recording paper selection algorithm Recording Paper Selection Algorithm and Printing AlgorithmPrinting algorithm ST against A3/B4/A4/LD/LT size originals respectively Discard function Length of B Discard parameter Set value Effective printing lengthOFF A5 , Comp LT, Comp COMP, LD LG/LT, LD ST, Folio B5, Folio B4, A3 A4, B4 B5, B4 A5, A4 Setting for the split recording Recording Paper and Function Others Table of the recording paper selection modesPriority Energy Saver Energy Saver ModeUser Functions Receiving FAX document, or by Memory Reception Standby state Circuit Connection and Procedure to Change ModeDial call-up transmission to a telephone circuit YES Telephone circuit Selection of the communication modeProcedure to select the transmission mode Communication mode Toshiba original procedure Signal name Signal form Signaling System Diagram and Signal FormsCircuit control signals This signal can be sent manually Signal form Communication with the binary signals Receiver Image signalMode change is possible only for the original set manually Mode change possible Informing that there is the next Frames received Error occurred Only error frame retransmitted 1 completed 2 completed MCF JOB Status button Cancel buttonCED Nsfcsidis CFR Binary signals PRI-MPS PIPPIN PRI-EOM FCF FIF FCS When this frame is the last frame, X =Format Binary signal Format FCF format of each binary signal 4800 bps, 2400 bps 9600 bps, 7200 bpsTCF 3 V.8/V.34 communication sequence Line closed Standard procedure Transmitter Receiver Signal name Abbreviation Function Remarks Data transmission Tone signal betweenHz and 3,750 Hz in units 150 Hz ALT TRN Transmitter FlagMaintains the synchroniza 7E H Tion Receives an NSF sent from Encoded image data Turn off Scrambled 1 is sent for Image data Image data are sent. TransmitterScrambled data frame to be Is completed Informs to disconnect the line Short training SignalPPS-EOP Transmission of one Is completed Flag Line closed DIS cannot be recognized DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control General functions FAX Automatic SwitchingTEL mode FAX mode Electrical Circuits Configuration FAX PWR STUDIO202L/203L/232/233/282/283 GD-1151 GD-1260 95C265 4Mbit x MN86064 Description of Circuits Configuration EU/AU/AS/C models ATT3DB1 Line path switching control circuitSignal Name Type Active Description Destination CML1 IC3 RLY3, IC3IC5 Dial pulse generation circuit Line 1 Dial Pulse Generation Signal Q53 Line 1 Dial Pulse Generation Signal REVA1 Line Current Detection Signal IC29 IC26Line Reverse Current Detection Signal IC29 IC26 Line current detection circuit Current Reverse Line 1 Current Detection IC29 IC26 Signal Line 1 Current Detection Signal IC29 IC26 CI detection circuit Line 1 CI Detect Signal IC29 IC26 Line 1 CI Detection Signal IC29 IC26 NCU board Line1 Line monitor circuit LOW High Monitoring signalRinger/Alarm Line Monitor Sound volume Relation between the signals and sound volume is as follows PWA-F-FAX-562 / PWA-F-FAX-610 PC Boards PWA-F-FAX-670 PWA-F-NCU-US-562/PWA-F-NCU-631-US PWA-F-MDM-563 PWA-F-NCU-EU-562/PWA-F-NCU-631-EU PWA-F-MDM-631 PWA-F-FAX-POWER-610 PWA-F-FAX-POWER-631 Electrical Circuits Explanation to the Users Installation Installation