Toshiba GD-1220, GD-1221 service manual Contents

CONTENTS

1. SPECIFICATIONS AND OUTLINE OF SYSTEM		......................................................... 1-1
1.1	FAX Options	1-1
1.2	Specifications	1-2
1.3	Features	1-5
1.4	Accessories and Parts	1-8
1.5	Options	1-9
1.6	System List	1-10
1.7	Units and Components	1-11
1.8	Layout of PC Boards	1-12

2. LSU-RELATED FUNCTIONS		2-1
2.1	Recording paper size	2-1
2.2	Effective recording area	2-2
2.3	Print mode	2-4
2.4	Recording paper selection algorithm and print algorithm	2-5
	2.4.1 Recording paper selection algorithm	2-5
	2.4.2 Print algorithm	2-5
2.5	Error processing	2-14
2.6	Limitations on reception print	2-15

3. DIALING/COMMUNICATION CONTROL			3-1
3.1	Circuit Connection and Procedure to Change Mode		3-1
	3.1.1 Dial call-up transmission to a telephone circuit		3-1
	3.1.2 Selection of the communication mode		3-2
	3.1.3 Procedure to select the transmission mode		3-2
3.2	Signaling System Diagram and Signal Forms		3-3
	3.2.1	Circuit control signals	3-3
	3.2.2 Communication with the binary signals		3-4
	3.2.3	V.8/V.34 communication sequence	3-12
3.3	FAX Automatic Switching		3-25
	3.3.1	General functions	3-25
	3.3.2	TEL mode	3-25
	3.3.3	FAX mode	3-25

4. ELECTRICAL CIRCUITS			4-1
4.1	Configuration		4-1
4.2	Description of Circuits		4-2
	4.2.1	Configuration	4-2
	4.2.2 Line path switching control circuit		4-4
	4.2.3 Dial pulse generation circuit		4-6
	4.2.4 Line current detection circuit		4-8
	4.2.5	CI detection circuit	4-10
	4.2.6	Line monitor circuit	4-12
4.3	PC Boards		4-15

5. INSTALLATION	5-1
5.1 Explanation to the Users	5-1

© 2006 - 2008 TOSHIBA TEC CORPORATION All rights reserved	GD-1220/1221
	CONTENTS

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