Ricoh FAX2700L SPECIFICATIONS fx4700

FX4

RICOH FAX4700L

SERVICE MANUAL

December 21st, 1995 Subject to change

WARNING

I

THIS MACHINE CONTAINS A LASER BEAM GENE RATOR. LASER BEAMS CAN CAUSE PERMANENT EYE DAMAGE. DO NOT OPEN THE LASER UNIT OR LOOK ALONG THE LASER BEAM PATH WHILE THE MAIN POWER IS ON.

Lithium Batteries (Memory Back-up)

CAUTION

I

The danger of explosion exists if a battery of this type is incorr ectly replaced. Replace only with the same or an equival ent type recommended by the manufac ture r. Discard used batteries in accordance with the manufacturer’s instructions.

Table of Contents

1. OVERALL MACHINE INFORMATION

1.1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . 1-1

1.2. FEATURES . . . . . . . . . . . . . . . . . . . . . 1-2

1.2.1. Featu res List . . . . . . . . . . . . . . . . . . . 1-2

1.2.2. Capabilitie s of Pro grammable Items . . . . . . . . . . 1-6

1.2.3. Possible Combin ations of Optional Equipment . . . . . . 1-7

1.3. COMPONENT LAYOUT . . . . . . . . . . . . . . . . 1-8

1.3.1. Mechanical Comp on en ts . . . . . . . . . . . . . . 1-8

1.3.2. Electrical Co mpo ne nt s . . . . . . . . . . . . . . . 1-10

1. PCBs . . . . . . . . . . . . . . . . . . . . . . 1-11

2. Motors . . . . . . . . . . . . . . . . . . . . . . 1-11

3. Sensors . . . . . . . . . . . . . . . . . . . . . 1-12

4. Interlock Switches . . . . . . . . . . . . . . . . . 1-12

5. Others . . . . . . . . . . . . . . . . . . . . . . 1-12

6. Optional Equ ipme nt . . . . . . . . . . . . . . . . 1-13

1.4. OVERALL MACHINE CONTROL . . . . . . . . . . . . 1-14

1.5. VIDEO DATA PATH . . . . . . . . . . . . . . . . . . 1-16

1.5.1. Transmission (PSTN) . . . . . . . . . . . . . . . 1-16

1.5.2. Reception (P STN) . . . . . . . . . . . . . . . . . 1-17

1.5.3. Transmission (ISDN) . . . . . . . . . . . . . . . . 1-18

1.5.4. Reception (I SDN) . . . . . . . . . . . . . . . . . 1-19

1.5.5. Copying . . . . . . . . . . . . . . . . . . . . . 1-20

1.5.6. Printing from the Optional Printe r Int erf ace . . . . . . . 1-21

1.6. POWER DISTRIBUTION . . . . . . . . . . . . . . . . 1-22

1.6.1. Distribution Dia gra m . . . . . . . . . . . . . . . . 1-22

1.6.2. Memory Back-up Circuit . . . . . . . . . . . . . . 1-24

1. SRAM/Real Time Clock (RTC) Backup . . . . . . . . . 1-24

2. DRAM Backup . . . . . . . . . . . . . . . . . . 1-25

2. DETAILED SECTION DESCRIPTIONS

2.1. SCANNER . . . . . . . . . . . . . . . . . . . . . 2-1

2.1.1. Mechanisms . . . . . . . . . . . . . . . . . . . 2-1

1. Document Detection . . . . . . . . . . . . . . . . 2-1

2. Pick-up and Separation . . . . . . . . . . . . . . . 2-2

3. Drive Mechanism . . . . . . . . . . . . . . . . . 2-3

4. Stamping . . . . . . . . . . . . . . . . . . . . . 2-5

2.1.2. Image Scanning * . . . . . . . . . . . . . . . . . 2-6

1. Sub Scan Resolution Conversion . . . . . . . . . . . 2-6

2. Partial Image Scann ing * . . . . . . . . . . . . . . 2-7

3. Scanning Double-sid ed Documents * . . . . . . . . . . 2-8

2.1.3. Vi d eo Proce ssing * . . . . . . . . . . . . . . . . 2-10

2.1.4. Shading Correction and A /D Con versio n * . . . . . . . 2-11

2.1.5. Process withou t Half tone * . . . . . . . . . . . . . 2-11

1. Background Det ect ion . . . . . . . . . . . . . . . . 2-11

2. MTF . . . . . . . . . . . . . . . . . . . . . . . 2-11

3. Thresho ldin g . . . . . . . . . . . . . . . . . . . 2-11

4. Erasure of irregula r dot s . . . . . . . . . . . . . . . 2-11

5. OR processing . . . . . . . . . . . . . . . . . . 2-12

2.1.6. Process with Halftone * . . . . . . . . . . . . . . . 2-12

1. Gamma correction . . . . . . . . . . . . . . . . . 2-12

2. MTF . . . . . . . . . . . . . . . . . . . . . . . 2-12

3. Halftone proce ss . . . . . . . . . . . . . . . . . . 2-12

2.1.7. Data Swit ching * . . . . . . . . . . . . . . . . . 2-12

2.1.8. Inch-mm Conversio n . . . . . . . . . . . . . . . . 2-13

2.2. PRINTING . . . . . . . . . . . . . . . . . . . . . . 2-14

2.2.1. Printing Process - Overview . . . . . . . . . . . . . 2-14

2.2.2. OPC Drum . . . . . . . . . . . . . . . . . . . . 2-15

2.2.3. Charge * . . . . . . . . . . . . . . . . . . . . 2-15

2.2.4. Laser Exp osu re . . . . . . . . . . . . . . . . . . 2-17

1. Overview * . . . . . . . . . . . . . . . . . . . . 2-17

2. Block Diagram . . . . . . . . . . . . . . . . . . . 2-18

3. Error Conditions * . . . . . . . . . . . . . . . . . 2-18

4. Print Den sity Adjustment . . . . . . . . . . . . . . . 2-19

5. Toner Saving Mod e . . . . . . . . . . . . . . . . . 2-19

2.2.5. Toner Supply . . . . . . . . . . . . . . . . . . . 2-20

2.2.6. Develop ment . . . . . . . . . . . . . . . . . . . 2-23

2.2.7. Paper Feed . . . . . . . . . . . . . . . . . . . 2-28

1. Overview * . . . . . . . . . . . . . . . . . . . . 2-28

2. Paper Lift Mechanism . . . . . . . . . . . . . . . . 2-29

3. Paper Size and Paper End Detection . . . . . . . . . . 2-30

4. Pick-up and Separation . . . . . . . . . . . . . . . 2-32

5. Drive Mechanism * . . . . . . . . . . . . . . . . . 2-32

2.2.8. Registra tion * . . . . . . . . . . . . . . . . . . . 2-35

2.2.9. Transfer and Separation . . . . . . . . . . . . . . 2-37

2.2.10. Cleaning . . . . . . . . . . . . . . . . . . . . 2-40

2.2.11. Fusing . . . . . . . . . . . . . . . . . . . . . 2-41

2.2.12. Page Sepa rat ion and Data Redu ction . . . . . . . . 2-45

2.2.13. Resolution Unit Selection for Print ing * . . . . . . . . 2-47

2.2.14. Paper Size Selection * . . . . . . . . . . . . . . 2-47

2.3. SYSTEM FEATURES . . . . . . . . . . . . . . . . . 2-48

2.3.1. Energy Saver Modes * . . . . . . . . . . . . . . . 2-48

1. Going into a Energy Sa ver Mod e . . . . . . . . . . . 2-49

2. Going into Level 2 Mode from Le vel 1 Mod e * . . . . . . 2-51

3. Receiving a Fax Message in En erg y Saver Mode . . . . . 2-53

4. Sending a Fax Message or Copying in Energy Saver Mode . 2-55

2.3.2. Au to mat ic S ervice Calls . . . . . . . . . . . . . . 2-57

1. Service Call Condition s . . . . . . . . . . . . . . . 2-57

2. Excessive Jam A larms * . . . . . . . . . . . . . . . 2-58

3. Periodic Service Call * . . . . . . . . . . . . . . . 2-59

4. PM Call * . . . . . . . . . . . . . . . . . . . . . 2-60

5. Effective Term o f S ervice Calls * . . . . . . . . . . . . 2-60

2.3.3. Parallel Memory Transmission * . . . . . . . . . . . 2-61

2.3.4. Transfer Broadcasting * . . . . . . . . . . . . . . . 2-63

2.3.5. Fax On Deman d * . . . . . . . . . . . . . . . . . 2-66

2.3.6. Hard Disk Filing System * . . . . . . . . . . . . . . 2-68

2.4. PCBs . . . . . . . . . . . . . . . . . . . . . . . 2-69

2.4.1. MFCE * . . . . . . . . . . . . . . . . . . . . . 2-69

2.4.2. MFDU . . . . . . . . . . . . . . . . . . . . . 2-72

2.4.3. PSU . . . . . . . . . . . . . . . . . . . . . . 2-74

2.4.4. NCU (USA) . . . . . . . . . . . . . . . . . . . 2-74

2.4.5. NCU (Europe/A sia) . . . . . . . . . . . . . . . . 2-75

3. INSTALLATION *

3.1. INSTALLING THE MACHINE . . . . . . . . . . . . . . 3-1

3.2. INITIAL PRO GRAMMI NG * . . . . . . . . . . . . . . . 3-1

3.3. INSTALLING OPTIONAL UNITS . . . . . . . . . . . . . 3-2

3.3.1. Feature Expan de r Type 140 (80MB Hard Disk) * . . . . . 3-2

3.3.2. ISDN G4 Interface * . . . . . . . . . . . . . . . . 3-4

3.3.3. Fax on Deman d * . . . . . . . . . . . . . . . . . 3-6

3.3.4. Counter * . . . . . . . . . . . . . . . . . . . . 3-7

3.3.5. Printe r I nt erf ace * . . . . . . . . . . . . . . . . . 3-8

3.3.6. Important Not ice fo r t he Funct ion Upgrade Card and

Fax On Demand Card * . . . . . . . . . . . . . . . 3-10

4. SERVICE TABLES AND PROCEDURES

4.1. SERVICE LEVEL FUNCTIONS * . . . . . . . . . . . . . 4-1

4.1.1. Bit Switch Programmin g (Fun ctio n 01 ) . . . . . . . . . 4-1

4.1.2. Group 3 Syste m Para meter List (Function 02) . . . . . . 4-2

4.1.3. Error Code Display (Function 03) . . . . . . . . . . . 4-4

4.1.4. Service Monitor Repo rt (Fun ctio n 04 ) . . . . . . . . . 4-4

4.1.5. Group 3 Prot oco l Dump (Function 05) . . . . . . . . . 4-4

4.1.6. RAM Display/Rewrite (Funct ion 06) . . . . . . . . . . 4-5

4.1.7. RAM Dump (Funct ion 06) . . . . . . . . . . . . . . 4-5

4.1.8. Counter Displa y/Rewrite (Function 07) . . . . . . . . . 4-6

4.1.9. Modem Test (Function 08) . . . . . . . . . . . . . . 4-7

4.1.10. DTMF Tone Test (Fu nct ion 08) . . . . . . . . . . . 4-7

4.1.11. NCU Parameters (Function 08) . . . . . . . . . . . 4-8

4.1.12. Modem Detection Test (Function 08) . . . . . . . . . 4-8

4.1.13. Ringer Test (Function 08) . . . . . . . . . . . . . 4-9

4.1.14. Ope rat ion Panel Test (Function 09) . . . . . . . . . 4-10

4.1.15. Xenon La mp Test (Function 10) . . . . . . . . . . . 4-10

4.1.16. ADF Test (Function 10) . . . . . . . . . . . . . . 4-11

4.1.17. Printer Test Patterns (Fun ctio n 11) . . . . . . . . . . 4-11

4.1.18. Scanner and Printer Mechanism Test - Free Run

(Function 11) . . . . . . . . . . . . . . . . . . 4-12

4.1.19. RAM Tests (Function 12) . . . . . . . . . . . . . . 4-12

4.1.20. Softwa re Down load (Function 12) . . . . . . . . . . 4-13

4.1.21. Softwa re Uplo ad (Function 12) . . . . . . . . . . . 4-15

4.1.22. SRAM Data Down loa d (Fun ction 12) . . . . . . . . . 4-17

4.1.23. Saving Dat a Programmed in IC Cards . . . . . . . . 4-18

1. When downloading /uploading software . . . . . . . . . 4-18

2. When replacing the MFCE . . . . . . . . . . . . . . 4-19

3. When replacing th e MFDU or o th er comp on ents . . . . . 4-20

4.1.24. Service Sta tio n Fax Numb er (Function 13) . . . . . . . 4-20

4.1.25. Serial Numbe r (Fu nct ion 14) . . . . . . . . . . . . 4-21

4.1.26. Hard Disk Initializa tio n (Fun ctio n 16) . . . . . . . . . 4-21

4.1.27. Hard Disk Formattin g (Fun ctio n 16) . . . . . . . . . 4-22

4.1.28. Hard Disk Test (Function 16) . . . . . . . . . . . . 4-22

4.1.29. G4 Parameter Programming (Function 17) . . . . . . . 4-23

4.1.30. Printing Conf idential Files . . . . . . . . . . . . . 4-23

4.2. BIT SWITCHES . . . . . . . . . . . . . . . . . . . 4-24

4.2.1. System Switches . . . . . . . . . . . . . . . . . 4-24

4.2.2. Scanner Swit che s . . . . . . . . . . . . . . . . 4-36

4.2.3. Printer Switches . . . . . . . . . . . . . . . . . 4-38

4.2.4. Communication Switches . . . . . . . . . . . . . . 4-41

4.2.5. G3 Switches . . . . . . . . . . . . . . . . . . . 4-49

4.3. NCU PARAMETERS . . . . . . . . . . . . . . . . . 4-56

4.4. DEDICATED TRANSMISSION PARAMETERS . . . . . . . 4-81

4.4.1. Programming Procedure . . . . . . . . . . . . . . 4-81

4.4.2. Parame te rs . . . . . . . . . . . . . . . . . . . 4-82

4.5. SERVICE RAM ADDRE SSES . . . . . . . . . . . . . . 4-85

4.6. SPECIAL TOOLS AND LUBRICANTS . . . . . . . . . . 4-101

4.7. PM TABLE . . . . . . . . . . . . . . . . . . . . . 4-102

5. REPLACEMENT AND ADJUSTMENT

5.1. COVERS . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1.1. Docu men t Table and Tray . . . . . . . . . . . . . . 5-1

5.1.2. Rea r Co ver Assembly . . . . . . . . . . . . . . . 5-2

5.1.3. Left Cover . . . . . . . . . . . . . . . . . . . . 5-2

5.1.4. Right Cove r . . . . . . . . . . . . . . . . . . . 5-3

5.1.5. Op era tion Panel A ssemb ly . . . . . . . . . . . . . 5-3

5.1.6. Top Cover . . . . . . . . . . . . . . . . . . . . 5-4

5.2. ADF . . . . . . . . . . . . . . . . . . . . . . . . 5-5

5.2.1. ADF Roller Assembly . . . . . . . . . . . . . . . . 5-5

5.2.2. Separation Rubber Plate . . . . . . . . . . . . . . 5-5

5.2.3. Se paration Pressure Ad justment . . . . . . . . . . . 5-6

5.2.4. ADF Sensors . . . . . . . . . . . . . . . . . . . 5-6

5.3. SCANNER . . . . . . . . . . . . . . . . . . . . . 5-8

5.3.1. Exposure Glass . . . . . . . . . . . . . . . . . . 5-8

5.3.2. R1/R2 Rollers . . . . . . . . . . . . . . . . . . 5-8

5.3.3. Xenon Lamp . . . . . . . . . . . . . . . . . . . 5-9

5.3.4. Tx Motor . . . . . . . . . . . . . . . . . . . . 5-10

5.3.5. Mirrors . . . . . . . . . . . . . . . . . . . . . 5-10

5.3.6. Stamper . . . . . . . . . . . . . . . . . . . . . 5-11

5.4. LASER PRINTING COMP ONE NTS . . . . . . . . . . . 5-12

5.4.1. Laser Unit . . . . . . . . . . . . . . . . . . . . 5-12

5.4.2. Laser Diode Unit and Hexag on al Mirror Mot or . . . . . . 5-13

5.5. DEVELOPMENT . . . . . . . . . . . . . . . . . . . 5-14

5.5.1. Develop ment Unit . . . . . . . . . . . . . . . . . 5-14

5.5.2. Transfer Roller . . . . . . . . . . . . . . . . . . 5-15

5.5.3. Main Moto r a nd Gea rs . . . . . . . . . . . . . . . 5-15

5.5.4. Toner End Sensor . . . . . . . . . . . . . . . . . 5-16

5.5.5. Replacing the Development Unit . . . . . . . . . . . 5-17

5.6. FUSING . . . . . . . . . . . . . . . . . . . . . . 5-20

5.6.1. Thermistor . . . . . . . . . . . . . . . . . . . . 5-20

5.6.2. Fusing Unit . . . . . . . . . . . . . . . . . . . 5-20

5.6.3. Hot Roller Strippers . . . . . . . . . . . . . . . . 5-22

5.6.4. Fusing Lamp . . . . . . . . . . . . . . . . . . . 5-22

5.6.5. Hot Roller . . . . . . . . . . . . . . . . . . . . 5-23

5.6.6. Pressure Roller . . . . . . . . . . . . . . . . . . 5-25

5.6.7. Thermost at an d Th ermo fu se . . . . . . . . . . . . . 5-25

5.7. PAPER FEED . . . . . . . . . . . . . . . . . . . . 5-26

5.7.1. Pape r Feed Motor and Clutch Box . . . . . . . . . . 5-26

5.7.2. Paper End Sensor . . . . . . . . . . . . . . . . . 5-26

5.7.3. Paper Feed Rollers, Paper Size Sensor, By-pass Feed Sensor,

and Relay Connector . . . . . . . . . . . . . . . 5-27

5.7.4. Registrat ion Rolle r a nd B ypa ss Feed Sensor Actuato r . . . 5-28

5.8. PCBs . . . . . . . . . . . . . . . . . . . . . . . 5-29

5.8.1. PSU . . . . . . . . . . . . . . . . . . . . . . 5-29

5.8.2. NCU, MFDU, and MFCE . . . . . . . . . . . . . . 5-30

5.8.3. Power Pa ck . . . . . . . . . . . . . . . . . . . 5-31

5.9. OTHERS . . . . . . . . . . . . . . . . . . . . . . 5-32

5.9.1. Ozone Filter an d Fan Moto r . . . . . . . . . . . . . 5-32

5.9.2. Speaker . . . . . . . . . . . . . . . . . . . . . 5-32

5.10. 100 SHEET PAPER CASSETTE (OPTIONAL) . . . . . . . 5-33

5.10.1. Relay Conne cto r a nd Gea r Co ver . . . . . . . . . . 5-33

5.10.2. Paper End Se nso r and Drive Co mpo ne nt s . . . . . . . 5-33

5.10.3. Paper Size Sensor . . . . . . . . . . . . . . . . 5-34

5.11. SBU ADJUSTMENT . . . . . . . . . . . . . . . . . 5-35

5.11.1. Replacement . . . . . . . . . . . . . . . . . . 5-35

5.11.2. Tools Required . . . . . . . . . . . . . . . . . . 5-35

5.11.3. Preparation . . . . . . . . . . . . . . . . . . . 5-35

5.11.4. Ad just ment . . . . . . . . . . . . . . . . . . . 5-36

5.12. IMAGE ADJ USTME NT . . . . . . . . . . . . . . . . 5-40

5.12.1. Overvie w . . . . . . . . . . . . . . . . . . . . 5-40

5.12.2. Scanner Parameters . . . . . . . . . . . . . . . 5-41

1. Contrast . . . . . . . . . . . . . . . . . . . . . 5-41

2. Margins . . . . . . . . . . . . . . . . . . . . . 5-41

5.12.3. Printer Pa rame te rs . . . . . . . . . . . . . . . . 5-42

1. Margins (Main Scan Directio n) . . . . . . . . . . . . 5-42

2. Margins (Sub Scan Direction) . . . . . . . . . . . . . 5-43

6. TROUBLESHOOTING

6.1. COPY QUALI TY TROUBLESHOOTING . . . . . . . . . . 6-1

6.1.1. Blank Copies . . . . . . . . . . . . . . . . . . . 6-2

6.1.2. Black Copies * . . . . . . . . . . . . . . . . . . 6-3

6.1.3. Dirty Backgroun d . . . . . . . . . . . . . . . . . 6-4

6.1.4. Uneven Image Density * . . . . . . . . . . . . . . 6-5

6.1.5. Vertical Black Lines * . . . . . . . . . . . . . . . . 6-6

6.1.6. Horizontal Bla ck Lines . . . . . . . . . . . . . . . 6-7

6.1.7. Vertical White Lines . . . . . . . . . . . . . . . . 6-8

6.1.8. Horizontal Whit e Lin es . . . . . . . . . . . . . . . 6-9

6.1.9. Black Dots/Spots * . . . . . . . . . . . . . . . . . 6-10

6.1.10. White Spots in Black Image Areas . . . . . . . . . . 6-11

6.1.11. Faint Copies * . . . . . . . . . . . . . . . . . . 6-12

6.1.12. Vertical Black Band . . . . . . . . . . . . . . . . 6-14

6.1.13. Unfused Copies . . . . . . . . . . . . . . . . . 6-15

6.1.14. Ghost Image . . . . . . . . . . . . . . . . . . 6-15

6.1.15. Toner on the Back of the Printer Pa pe r . . . . . . . . 6-16

6.1.16. Misaligned Out put (Dat a shif te d to the right or left ) . . . 6-17

6.1.17. Misaligned Output (Image shifted vertically)/Reduced Image 6-17

6.2. MECHANICAL PROBLE MS . . . . . . . . . . . . . . 6-18

6.2.1. ADF/Scanner . . . . . . . . . . . . . . . . . . . 6-18

1. Non Feed * . . . . . . . . . . . . . . . . . . . . 6-18

2. Jam . . . . . . . . . . . . . . . . . . . . . . . 6-19

3. Skew . . . . . . . . . . . . . . . . . . . . . . 6-20

4. Multi-feed . . . . . . . . . . . . . . . . . . . . 6-20

6.2.2. Printe r . . . . . . . . . . . . . . . . . . . . . 6-21

1. Non-feed * . . . . . . . . . . . . . . . . . . . . 6-21

2. Paper Jam - Inside the Print er * . . . . . . . . . . . . 6-22

3. Jam - Fusing Exit . . . . . . . . . . . . . . . . . 6-23

4. Skew . . . . . . . . . . . . . . . . . . . . . . 6-24

5. Multi-feed . . . . . . . . . . . . . . . . . . . . 6-25

6.3. SERVICE CALL CONDITIONS * . . . . . . . . . . . . . 6-26

6.4. ERROR CODES * . . . . . . . . . . . . . . . . . . 6-30

6.5. ELECTRICAL COMP ONE NT DEFECTS . . . . . . . . . 6-38

6.5.1. Defective Sensor Table * . . . . . . . . . . . . . . 6-38

6.5.2. Fuses . . . . . . . . . . . . . . . . . . . . . . 6-39

December 21st, 1995 OVERALL MACHINE INFORMATION

SPECIFICATIONS

1. OVERALL MACHINE INFORMATION

1.1. SPECIFICATIONS

Type

Desktop type transceiver

Circuit

PSTN, PABX, ISDN (optional)

Connection

Direct couple

Document Size Length:

105 - 420 mm [4.1 - 16.5 ins] Up to 1.2 m [47.2 ins], manually assisted Up to 14 m [46 ft] after adjustment Width: 148 - 304 mm [5.8 - 12.0 ins]

Thickness:

0.05 to 0.2 mm [2 to 8 mils] (equivalent to 50 - 80 g/m

Document Feed

Automatic feed, face down

ADF Capacity

50 sheets (using Letter size 20 lb paper or A4 size 70 g/m 25 sheets (using Legal/Double Letter size 20 lb paper or B4/A3 size 70 g/m

Scanning Method

Flat bed, with CCD

Scan Width

219.5 mm [8.64 ins] ± 1% (A4/Letter)

260.1 mm [10.2 ins] ± 1% (B4)

308.9 mm [12.2 ins] ± 1% (A3/Double Letter)

Scan Resolutions Main scan: 200 dpi Sub scan:

Standard - 100 lpi Detail - 200 lpi Fine - 400 lpi

2

paper)

2

)

2

paper)

Memory Capacity ECM: 128 kbytes

SAF: Standard: 1 Mbytes: 73 pages With 2 Mbyte option: 219 pages With 4 Mbyte option: 365 pages With 80 Mbyte HDD option: 1200 pages With 80 Mbyte HDD plus Function Upgrade Card: 3000 pages

Measured using ITU-T #1 test document (Slerexe letter)

Compression

MH, MR, EFC, MMR, SSC (MMR only with ECM and G4) SAF storage for memory tx: MMR and raw data

Protocol

Group 3 with ECM Group 4 (ISDN G4 option required)

Modulation

V.33/V.17(TCM), V.29 (QAM), V.27ter (PHM), V.21 (FM)

Data Rate (bps) G3: 14400/12000/9600/7200/4800/2400,

Automatic fallback

G4 (option): 64 kbps/56 kbps I/O Rate

With ECM: 0 ms/line Without ECM: 2.5, 5, 10, 20, or 40 ms/line

Transmission Time G3: 6 s at 14400 bps; Measured with G3

ECM using memory for an ITU-T #1 test document (Slerexe letter) at standard resolution G4 (option): 3 s at 64 kbps; Measured with an ITU-T #1 test document (Slerexe letter) at standard resolution

Printing System

Laser printing, plain paper, dry toner

1-1

OVERALL MACHINE INFORMATION December 21st, 1995 FEATURES

Paper Size and Capacity Standard Cassette: 250 sheets

USA: Letter, Legal Europe: A4, A5 sideways Asia: A4, A5 sideways, F/F4 100 Sheet Cassette (Optional): 100 sheets USA: Letter, Legal Europe: A4, A5 sideways Asia: A4, A5 sideways, F, F4 Paper Feed Unit (Optional): 500 sheets USA: Letter, Legal Europe: A4, A5 sideways Asia: A4, A5 sideways, F/F4

Note: Up to two PFUs can be installed. Maximum Printing Width

208 mm [8.1 ins]

Print Resolutions Fax and Copy Mode:

Main scan: 400 dpi Sub scan: 400 dpi

Printer Mode: 300 x 300 dpi Power Supply

USA: 115 ± 20 Vac, 60 ± 1 Hz Europe/Asia: 187 - 276 Vac, 50 ± 3 Hz

Power Consumption (Base Machine Only) Standby:

Minimum 2 W (see Note) Normal 30 W

Transmitting: 60 W Receiving: 220 W (Maximum: 900 W) Copying: 330 W (Maximum: 900 W)

Note: 2W mode is not available if one of the

following options is installed.

- Printer interface unit

- G4

- RS232C interface

1.2. FEATURES

1.2.1. Features List

KEY: O = Used, X = Not Used, A = With optional memory 2M/4M only B = With optional memory 80M (HDD) only C = With optional function upgrade card only D = With optional Fax On Demand kit only E = With optional 100 sheet cassette only F = With optional paper feed unit only G = With optional counter only H = With optional handset only (US only) I = With optional printer interface unit only J = With optional G4 kit only

Equipment

ADF O Book scan X Built-in handset X Bypass feed: 1 sheet O Cabinet X Counter G Cutter X Handset H Hard disk B Manual feed mechanism (ADF) X Marker (Stamp) O Monitor speaker O Optional cassette: 100 sheets E Optional Fax On Demand kit D Optional paper feed unit

(up to 2 units) Optional printer interface I

F

Operating Environment Temperature: 17 - 28 °C [63 - 82 °F] Humidity: 40 - 70 %Rh

Dimensions (W x D x H)

475 x 520 x 260 mm [18.7 x 20.5 x 10.2 ins] Excluding handset, trays, and optional units

Weight

Approx. 19 kg [50.9 lbs] Excluding CTM, handset, trays, and optional units

Video Processing Features

Contrast O Halftone (Basic & Error Diffusion) O MTF O Reduction before tx (B4 -> A4) O Reduction before tx (A3 -> B4) O Reduction before tx (A3 -> A4) O Scanning Resolution - Standard O Scanning Resolution - Detail O Scanning Resolution - Fine O

1-2

December 21st, 1995 OVERALL MACHINE INFORMATION

FEATURES

Scanning Resolution - Superfine X Smoothing to 400 x 400 dpi

when printing

Communication Features - Aut o

Automatic fallback O Automatic redialing O Confidential reception A or B Dual Access O Substitute reception O

Communication Features -

User Selectable

Action as a transfer broadcaster A or B AI Redial (last ten numbers) O Answering machine interface X Authorized Reception O Auto-answer delay time X Auto dialing (pulse or DTMF) O Auto Document O Auto image density selection X Auto paper size selection X Automatic Voice Message X Batch Transmission (max 6 files) A or B Broadcasting O Chain Dialing O Communication Result Display X Confidential ID Override O Confidential Reception A or B Confidential Transmission O Direct Fax Number Entry O Economy Transmission A or B Fax on demand D Forwarding A or B Free Polling O Groups (7 groups) O Group Transfer Station A or B Hold X ID Transmission O Immediate Redialing O Immediate transmission O Keystroke Programs O Length Reduction X Memory transmission O Multi-step Transfer A or B Next Transfer Station X OMR O

O

Communication Features -

User Selectable

On Hook Dial O Ordering Toner X Page Count O Page separation mark O Parallel memory transmission O Personal Codes O Personal Codes with Conf. ID A or B Partial Image Area Scanning C Polling Reception O Polling Transmission O Polling tx file lifetime in the SAF O Quick Dial

(Standard: 64 stations) Reception modes (Fax, Tel, Remote control features X Remote Transfer A or B Restricted Access O Secured Polling O Secured Polling with Stored ID

Override Secure Transmiss ion X Send Later O Silent ringing detection X Speed Dial

(Standard: 100 stations) Telephone Directory O Tonal Signal Transmission O Transfer Request O Transmission Deadline (TRD) A Turnaround Polling X Two- step Transfer X Two in one O Voice Request (immed. tx only) X

Communication Features -

Service Selectable

AI Short Protocol O Auto-reduction override option O Busy tone detection O Cable Equalizer

PSTN ISDN

Closed Network (tx and rx) O Continuous Polling Reception O Dedicated tx parameters O ECM O

Auto) O

O

J

1-3

OVERALL MACHINE INFORMATION December 21st, 1995 FEATURES

EFC O Inch-mm conversion before

transmission mm-inch conversion when print-

ing Page retransmission times O Protection against wrong conn. O Resolutions available for recep-

tion 200 x 100 dpi

200 x 200 dpi 200 x 400 dpi 400 x 400 dpi

Resol’n stepdown override option X Short Preamble X Well log O

Other User Features

Area code prefix X Automatic service call Service Center mark O Checkered mark O Clearing a memory file O Clearing a polling file O Clock O Confidential ID A or B Copy editing (Erase Center/Mar-

gin) Copy mode O Copy Mode Restriction O Counters O Daylight Saving Time O Destination Check X Direct entry of names O File Retention Time O File Retransmission B, C Function Programs O Hard Disk Filing System B, C ID Code O Label Insertion ("From xxx") O Language Selection O LCD contrast control Service Memory Lock A or B Memory Lock ID A or B Modifying a memory file X Multi Sort Document Reception A or B Multicopy mode O Own telephone number O

O

O O X X

X

Other User Features

Energy Saver (Night Timer and standby mode)

Print density control O Printing a memory file O RDS on/off O Reception Mode Switching Timer X Reception time printing O Reduction/Enlargement X Remaining memory indicator O Remote ID A , B,

Reverse Order Printing A or B RTI, TTI, CSI O Secure ID X Service Report Transmission O Speaker volume control O Specified Cassette Selection F Substitute reception on/off O Telephone line type O Toner Saving Mode O TTI/CIL on/off O User Function Keys (5 keys) O User Parameters O Wild Cards O

Reports - Aut omat i c

Charge Control Report X Communication Failure Report O Confidential File Report A or B Error Report O Fax On Demand Report D Memory Storage Report O Mode Change Report X Polling Clear Report O Polling Reserve Report O Polling Result Report O Power Failure Report O TCR (Journal) O Toner Cassette Order Form X Transfer Result Report A or B Transmission Result Report O

Reports - User-initiated

Authorized Reception List O Charge Control Report X File List O

O

or D

1-4

December 21st, 1995 OVERALL MACHINE INFORMATION

FEATURES

Reports - User-initiated

Forwarding List A or B Group List O Hard Disk File List B, C Personal Code List O Program List O Quick Dial List O Specified Cassette Selection List B Speed Dial List O TCR O Transmission Status Report X User Function List O User Parameter List O

Service Mode Features

Auto Paper Select test X Back-to-back test O Bit switch programming O Book mode test X Buzzer test O Cable equalizer O Comm. parameter display O Counter check O Country code O DTMF tone test O Echo countermeasure O Effective term of service calls O Error code display O Excessive jam alarm O File Transfer O Hard Disk Utilities (Format etc.) B LCD contrast adjustment O Line error mark O Memory file printout (all files) O Modem test O NCU parameters O Operation panel test O Periodic service call O PM Call O Printer mechanism test O Printer test patterns O Programmable attenuation X Protocol dump list O RAM display/rewrite O RAM dump O RAM test O Ringer test O

Service Mode Features

Scanner lamp test O Scanner mechanism test O Sensor initialization X Serial number O Service monitor report O Service station number O Software upload/download O SRAM data download O System parameter list O Technical data on the TCR O Thermal head parameters X Transmission Status Report X User data transfer O

1-5

OVERALL MACHINE INFORMATION December 21st, 1995 FEATURES

1.2.2. Capabiliti es of Progra mm abl e Ite ms

The following table shows how the capabilit y of ea ch pro gra mmab le ite m changes after the optio na l fun ctio n upgrade card is installed.

Item Standard

Maximum number of memory files plus polling rx files

Maximum number of memory files Maximum number of destinations per file Maximum number of destinations overall Maximum number of pages overall Number of Quick Dials Number of Speed Dials Number of Groups Maximum number of destinations per Group Maximum number of destinations dialed

from the ten-key pad overall Maximum number of programs

Maximum number of destinations per program

Maximum number of destinations used for all programs

Maximum number of Auto Documents

Maximum number of communication records for the TCR (Journal) stored in the memory

Maximum number of addresses specified for features such as Authorized Reception and Specified Cassette Selection

Maximum number of personal codes

200 1000 200 1000

200 200 500 2000

1200 3000

64 64

100 1000

930

200 200 100 1000

64

(programmed in 64

Quick Dial keys)

200 200

300 2000

64

(programmed in 64

Quick Dial keys)

256 1000

30 50

50 500

With function upgrade card

164

(programmed in 64

Quick Dial keys plus

100 Speed Dial

codes)

164

(programmed in 64

Quick Dial keys plus

100 Speed Dial

codes)

1-6

December 21st, 1995 OVERALL MACHINE INFORMATION

FEATURES

1.2.3. Possible Combinations of Optional Equipment

The following table shows which it ems of opt ion al eq uip men t can be or can not be installed at the same time. “4” in the table indicates that the two items of optional equipment can be installed at the same time. “X” in the table indicates that the two items of optional equipment cannot be installed at the same time.

IC Cards

ABCDE

A: Feature Expander 2M/4M B: Feature Expander 80M (HDD) C: Function Upgrade Card D: Fax On Demand (FOD) Card E: Flash/SRAM Data Copy Tool

(Service Tool)

X ✔ 44 ✔ 4 XX ✔ 4 XX

✔ 4 XX

X ✔✔ 4

Other

A: Paper Feed Unit Type F B: Paper Feed Unit Type S C: 100 Sheet Cassette D: Printer Interface E: G4

ABCDE ✔ X ✔ 44 X ✔ 444

✔ 4 ✔ 4 ✔ 44 ✔ ✔ 444

1-7

OVERALL MACHINE INFORMATION December 21st, 1995 COMPONENT LAYOUT

1.3. COMPONENT LAYOUT

1.3.1. Mechanical Components 4

5

3

10

6

9

8

7

11

12

13

14

15

16

17

No. Name Descr iption

Laser Unit This consists of the LDDR (Laser Diode Driver), focusing

1

SBU This scans the original.

2

R2 Roller Feeds the document through the scanner.

3

R1 Roller Feeds the document through the scanner.

4

Document Feed Roller Feeds the document into the scanner.

5

Separation Pad Allows one page into the scanner.

6

Pick-up Roller Picks up pages of the document from the document table

7

CTM (Cleaning Toner

8

Magazine) Hot Roller Heat from this roller fuses the toner to the copy paper.

9

Hot Roller Strippers These take the paper off the hot roller after fusing.

10

Paper Feed-out Rollers These feed the paper out of the printer.

11

Fusing Pressure Roller This applies pressure to the paper during the fusing

12

OPC Drum The latent image is written to this organic photoconductor

13

Transfer Roller This applies a charge to the paper to pull the toner off the

14

Registration Roller This carries out the registration process.

15

lens, Fθ Lenses, hexagonal mirror motor, and other laser optic components.

one at a time. This consists of the toner cartridge, cleaning unit, used

toner tank, charge corona unit, and quenching lamp.

process.

drum.

drum and onto the copy paper.

2

1

18

H515V001.wmf

1-8

December 21st, 1995 OVERALL MACHINE INFORMATION

COMPONENT LAYOUT

No. Name Description

Development Unit This consists of the development roller, toner application

16

Paper Feed Rollers These pick up the top sheet of paper from the stack in the

17

Cassette (Standard) This holds up to 250 sheets of paper.

18

roller, toner supply bar, and transfer roller.

cassette and feed it into the printer.

1-9

5

4 19

20

27

28

OVERALL MACHINE INFORMATION December 21st, 1995 COMPONENT LAYOUT

1.3.2. Electrical Compone nts

6

10

7

8

9

11

3

13

12

14

30

15

16

17

2

1

24

23

22

21

H515V003.wmf

18

29

31

32

1-10

33

26

25

H515V004.wmf

December 21st, 1995 OVERALL MACHINE INFORMATION

COMPONENT LAYOUT

1. PCBs

No. Name Description

MFDU (M-zone Facsimile Driver Unit)

27

MFCE (M-zone Facsimile

28

Control Engine) NCU (Network Control

26

Unit) OPU (Operation Panel

30

Unit) PSU (Power Supply Unit) This board supplies power to the machine, and

25

LDDR (Laser Diode

7

Driver) Power Pack This supplies high voltages to the corona wire, transfer

32

SBU The sensor on this board reads and converts the light

29

This board contains drivers for the motors, a dc-dc converter, the energy saving mode cpu, and other drive electronics.

This board controls the machine. It contains the main cpu, flash ROM, system RAM, and so on.

This board contains a relay and switches for interfacing the machine to the network and the handset.

This board controls the operation panel.

switches the fusing lamp on/off. This board drives the laser diode.

roller, and development rollers.

reflected from the document into an analog video signal.

2. Motors

No. Name Description

Tx Motor This stepper motor drives the scanner.

1

Main Motor This brushless dc motor drives the drum, fusing unit,

23

Paper Feed Motor This stepper motor drives the registration roller and the

21

Hexagonal Mirror Motor This high-speed dc motor drives the hexagonal mirror

4

Ozone Fan Motor This removes ozone-laden air from the vicinity of the

31

Fusing Fan Motor This cools the interior of the machine.

33

development unit, and CTM.

paper feed mechanisms in the cassettes.

in the laser printer optics.

drum, and filters out the ozone.

1-11

OVERALL MACHINE INFORMATION December 21st, 1995 COMPONENT LAYOUT

3. Sensors

No. Name Description

Document Sensor This detects the presence of a document in the feeder.

5

B4-width Sensor This detects the presence of a B4 width document

9

A3-width Sensor This detects the presence of an A3 width document

10

Scan Line Sensor This detects when a page is approaching the auto

6

Toner End Sensor This detects when the toner has run out.

3

Paper Size Detector This detects the paper size installed in the cassette.

17

Paper End Sensor This detects when the paper in the cassette has run out.

24

Registration Sensor This detects when paper has reached the registration

16

Fusing Exit Sensor This detects when the paper has been fed out of the

19

Fusing Exit Cover Switch This detects whether the fusing exit cover is open or

18

Bypass Feed Sensor This detects when a sheet of paper has been inserted

15

(256mm, 10.1").

(297mm, 11.7").

shading position.

The user must install the correct size actuator.

roller.

printer.

closed.

into the bypass feed slot. Then the registration roller feeds the paper a short distance into the machine to prepare for printing, and stops.

4. Interlock Switches

No. Name Description

Interlock Switches: Fusing Unit Cover, Top/Front

20

Cover

22

If the fusing unit cover is open, the +5VLD power supply for the laser diode is interrupted. If the top and/or front covers are open, the interlock switch interrupts the +5VLD power supply for the laser diode and the +24VD power supply for the power pack, motors, and other components.

5. Others

No. Name Description

Stamper Ass’y This stamps a red circle on each page that is

8

Thermostat This interrupts the ac power to the fusing lamp if the

12

Thermistor This monitors the temperature at the hot roller surface.

14

Fusing Lamp The heat from this lamp fuses the toner to the paper.

13

Monitor Speaker This allows the user to listen to the condition of the

11

Zener Diode This ensures that the charge given to the drum by the

2

successfully fed through the scanner.

temperature of the thermostat surface exceeds 400°C.

telephone line.

charge corona wire does not exceed -750 volts.

1-12

47

December 21st, 1995 OVERALL MACHINE INFORMATION

COMPONENT LAYOUT

6. Optional Equipment

40

41

39

38

42

43

37

36

44

35

45

46

No. Name Description

Counter This counts the number of prints.

40

Printer Interface This allows the machine to be connected to a computer

as a laser printer. The following components belong to

37

IC Card (Upper Slot) The IC card connected to this slot increases the SAF

42

IC Card (Lower Slot) Either a Function Upgrade Card or a Fax On Demand

43

100 Sheet Cassette This increases the paper capacity by 100 sheets.

44

Paper Feed Units The machine can have up to two paper feed units. One

34

G4 Interface (CiG4) This interfaces the machine with an ISDN network.

35

Microphone jack for the

36

Fax On Demand kit RS232C Interface Board This allows the machine to be connected to a computer

this unit. (Refer to the Printer Interface’s service manual for details.) 38 - Controller Board 39 - Interface Board

memory capacity. Either a 2 MB or 4 MB DRAM card, or an 80 MB hard disk (41) can be used.

Card can be used.

The following components belong to this cassette. 45 - Paper Size Detector 46 - Paper End Sensor 47 - Paper Feed Clutch

unit increases the paper capacity by 500 sheets.

This allows the users to record their own voice messages for Fax On Demand applications.

as an external fax device, for example. This option may not be available in some countries.

34

H515V510.wmf

1-13

OVERALL MACHINE INFORMATION December 21st, 1995 OVERALL MACHINE CONTROL

1.4. OVERALL MACHINE CONTROL

Fax On

Demand

Card

IC Card

(Type A)

Lower Slot

Video SRAM

(24kB)

SBU

Function

Upgrade

Card

IC Card

(Type B)

Upper Slot

VPP4F

Feature

Expander

RS232C

Interface

LPC

Feature

Expander

2M

4M

CiG4-SV

G4 Interface

MFCE

DATA/ADDRESS BUS

R144EFXL

Modem

MFDU

Interface

DRAM

(2MB)

SCP

HDD

80MB HDD

Bus Interface Parallel Interface Serial Interface

Flash ROM

(2MB)

Voice

A/D

Converter

SRAM

(128kB)

CG ROM

(512kB)

Microphone

(FOD)

LDDR

Laser Synch.

Printer

Interface

PSU

Hexagonal Mirror

Motor

Main Motor

Power Pack

CTM Fan Motors Mechanical

Components

Operation

Panel

Power

Saver CPU

DC/DC

Converter

EXIO1 EXIO2

Hybrid IC

DTMF

Receiver

MFPD

NCU

Speaker

Sensors

Clutches

Scanner Motor

Paper Feed Motor

Mechanical

Counter

100 Sheet

Cassette

PFUs

H515V501.wmf

1-14

December 21st, 1995 OVERALL MACHINE INFORMATION

OVERALL MACHINE CONTROL

The MFCE (M-zone Facsimile Control Engine) conta ins most of the log ical components for overall system control, and direct interfa ces to the IC cards, an RS232C interface*, and a G4 interface (CiG 4-S V). The MFDU (M-zone Facsimile Drive Unit) has interfaces to the power sup ply, sensors, drive components, and optional equipment.

* The RS232C interface may not be available in some countries.

There are two cpus in the mach ine: the main cpu (SCP) on the MFCE an d the energy saver cpu on the MFDU. In energ y saver mod e, the main CPU switches off and the energy saver CPU takes over.

The 2 MB (16Mbit) flash ROM cont ains the system software, which can be updated through an IC card slot or from the remote control cente r u sing RDS. The CGROM (Character Genera tio n ROM) conta ins all the cha ract er fo nts used on the display and in rep orts.

The 2 MB DRAM is used for the SAF memory, ECM buffer memory, work area, and page memory. The SAF memory can be extended by 2, 4, or 8 0 MB with an IC memory card or a hard disk.

The 128 kB SRAM contain s the user an d syste m para meters. This can be upgraded by 512 kB with th e fu nct ion upgrade card. These SRA Ms are battery backed-up.

The MFCE has two IC card slots. The upper IC card slot can ha ve one of the following:

• Feature Expander Type 140 - 2M (2 MB DRAM)

• Feature Expander Type 140 - 4M (4 MB DRAM)

• Feature Expander Type 140 - 80M (Hard disk interface with 1 MB

DRAM and 32kB SRAM*)

The lower IC card slot can have one of the follo wing :

• Fax On Demand Card (512 kB SRAM*)

• Function Upgrade Card (256 kB Flash ROM and 512 kB SRAM*)

• Flash/SRAM Data Copy Tool (Service Tool)

* The SRAMs in the IC cards are battery backed up, in case the the machine is turned off or the machine goes into the 2-watt energy saver mode (referred to as Level 2 energy saver mode in section 2-3). However, the data in these SRAMs are not guaranteed if the card is disconnected from the machine. Whenever the Fax On Demand card or Function Upgrade Card needs to be removed for using the service tool, follow the instructions in section 4-1 to avoid any data loss.

1-15

OVERALL MACHINE INFORMATION December 21st, 1995 VIDEO DATA PATH

1.5. VIDEO DATA PATH

1.5.1. Transmission (PSTN)

Scanner

Printer

Interface

Printer

(LDDR)

VPP4F

MFCE

Line Buffer

LPC

SAF

Memory

DCMMR

SCP

DCR

Page

Memory

Buffer

Memory

FIFO

ECM

Memory

CiG4

CiG4-SV

CODEC

Modem

To

PSTN

NCU

H515V502.wmf

Immediate Transmission:

Scanned da ta passes to the VPP4F, where the data un de rgoes analog/dig ita l video processing, and is sent to the DCR block in the SCP thro ug h th e DCMMR for compression. The compressed data the n passes eit he r t o th e FIFO memory or to the EC M memory, before it is sent to the telephone line through the modem.

Memory Transmission:

The processed video da ta from th e VPP4F passes to the DCMMR block in the SCP, where the data is compressed into MMR format or kept as raw data, then stored in the SAF memory. At the time for transmission, the DCMMR block decompresses the data from the SAF memory, then the DCR block compresses it again for transmission. The compressed data the n passes eit he r t o th e FIFO memory or to the EC M memory, then it is sent to the telephone line through the mod em.

Parallel Memory Transmission:

This feature allows the machin e to scan a do cume nt into the SAF memory and to send the same docu men t simultaneously. The machine stores the proce ssed video data in the SAF memory and sen ds the data through the mo dem a t th e same time. Refer to section 2.3.3 for more details ab ou t th is featu re.

1-16

December 21st, 1995 OVERALL MACHINE INFORMATION

VIDEO DATA PATH

1.5.2. Reception (PSTN)

Scanner

Printer

Interface

Printer

(LDDR)

VPP4F

MFCE

Line Buffer

LPC

SAF

Memory

DCMMR

SCP

DCR

Page

Memory

Buffer

Memory

FIFO

ECM

Memory

CiG4-SV

CiG4

CODEC

Modem

NCU

From PSTN

H515V503.wmf

Data from the line passes to t he mod em t hro ug h the NCU. A ft er t he mod em demodulates the data , the DCR block in th e SCP decompresses the data from either the FIFO or the ECM memory. At the same time, the demodu lat ed data is backe d up in the SAF memo ry, in case of mechanical prob lems du ring print ing (this is known as subst itu te reception).

The decompressed da ta is then passed to the p ag e me mory for printing. Aft er a page of data has been stored in the page memory, the data is sent to the LDDR through the LCP for prin tin g.

1-17

OVERALL MACHINE INFORMATION December 21st, 1995 VIDEO DATA PATH

1.5.3. Transmission (ISDN)

To

Scanner

Printer

Interface

VPP4F

MFCE

Line Buffer

SCP

SAF

Memory

DCMMR

DCR

Buffer

Memory

FIFO

CiG4

CiG4-SV

CODEC

Modem

ISDN

Printer

(LDDR)

LPC

Page

Memory

ECM

Memory

G3 G4

NCU

H515V504.wmf

G4 Immediate Transmission :

Scanned da ta passes to the VPP4F, where the data un de rgoes analog/dig ita l video processing, and is sent to the DCR block in the SCP thro ug h th e DCMMR for compression. The DCR block then compresses the data into MMR format, and passes it to the CiG4-SV board for G4 transmission .

G4 Memory Transmission:

The video processed da ta from th e VPP4F passes to the DCMMR block in the SCP, where the data is compressed into MMR format or kept as raw data, then stored in the SAF memory. At the time for transmission, the DCMMR block decompresses the data from the SAF memory, then the DCR block compresses it again into MMR format. The MMR compressed data then passes to the CiG4-SV board for tran smission.

G3 Transmission over an ISDN:

The analog data is con vert ed into PCM (Pulse Coded Modulation) fo rmat in the codec, then sent over th e IS DN.

Parallel Memory Transmission:

This feature allows the machin e to scan a do cume nt into the SAF memory and to send the same docu men t simultaneously. The machine stores the proce ssed video data in the SAF memory and sen ds the data through the CiG 4 board at the same time. Refer to section 2.3.3 for more details ab ou t th is featu re.

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December 21st, 1995 OVERALL MACHINE INFORMATION

VIDEO DATA PATH

1.5.4. Reception (ISDN)

From

Scanner

Printer

Interface

VPP4F

MFCE

Line Buffer

SCP

SAF

Memory

DCMMR

DCR

Buffer

Memory

FIFO

CiG4

CiG4-SV

CODEC

Modem

ISDN

Printer

(LDDR)

LPC

Page

Memory

ECM

Memory

NCU

H515V505.wmf

G4 Reception:

Data from the ISDN line passes to the SAF memory first. The n the data is decompressed at th e DCR block in th e SCP, and sent to the page memo ry. After a page of data has been store d in the page memory, the data is sent to the LDDR through the LCP for prin tin g.

G3 Reception from the ISDN:

Data from the ISDN line first passes to the modem throu gh the codec, where it is converted int o a n a na log sign al. After the mode m de mod ulates the data, the DCR block in the SCP decomp resse s the data fro m eith er th e FIFO or the ECM memory. At the same time, the demodu lat ed data is backe d up in the SAF memo ry, in case of mechanical prob lems du ring print ing (this is known as subst itu te reception).

The decompressed da ta is then passed to the p ag e me mory for printing. Aft er a page of data has been stored in the page memory, the data is sent to the LDDR through the LCP for prin tin g.

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OVERALL MACHINE INFORMATION December 21st, 1995 VIDEO DATA PATH

1.5.5. Copying

Scanner

Printer

Interface

Printer

(LDDR)

VPP4F

MFCE

Line Buffer

LPC

SAF

Memory

DCMMR

SCP

DCR

Page

Memory

Buffer

Memory

FIFO

ECM

Memory

CiG4

CiG4-SV

CODEC

Modem

NCU

H515V506.wmf

Single copy

The scanned data passe s t o th e page memory after video processing in the VPP4F. After a page of data has been stored in the page memory, the data is sent to the LDDR through the LIF blo ck.

Multi-page copy

The scanned data passe s t o th e SA F memory af ter video processing (VPP4F) and compression (DCMMR). Af ter all t he page s have b een st ore d in the SAF memory, the data passes to the DCMMR block again for decompression, then it passes to the page memo ry for prin tin g.

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December 21st, 1995 OVERALL MACHINE INFORMATION

VIDEO DATA PATH

1.5.6. Printing from the Optional Pri nter Inter fac e

Scanner

Printer

Interface

Printer

(LDDR)

VPP4F

MFCE

Line Buffer

LPC

SAF

Memory

DCMMR

SCP

DCR

Page

Memory

Buffer

Memory

FIFO

ECM

Memory

CiG4

CiG4-SV

CODEC

Modem

NCU

H515V507.wmf

After a page of data has been stored in the printer interfa ce’s page memory, the data is sent to the LDDR through the LCP. The page memory on the MFCE is not used for print ing .

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