Ricoh FAX3700l User manual

FAX3700L
SERVICE MANUAL
September 21st, 1995
Subject to change

IWARNING
THIS MACHINE CONTAINS A LASER BEAM GENERATOR. LASER
BEAMS CAN CAUSE PERMANENT EYE DAMAGE. DO NOT OPEN THE
LASERUNIT OR LOOK ALONG THE LASER BEAM PATH WHILE THE
MAIN POWER IS ON.
Lithium Batteries (Memory Back-up)
ICAUTION
The danger of explosion exists if a battery of this type is incorrectly
replaced. Replace only with the same or an equivalent type
recommended by the manufacturer. 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 * . . . . . . . . . . . . . . . . . . . . 1-3
1.3. COMPONENT LAYOUT . . . . . . . . . . . . . . . . 1-6
1.3.1. Mechanical Components . . . . . . . . . . . . . . 1-6
1.3.2. Drive Components . . . . . . . . . . . . . . . . 1-8
1.3.3. Electrical Components . . . . . . . . . . . . . . . 1-10
1. PCBs . . . . . . . . . . . . . . . . . . . . . . 1-11
2. Motors . . . . . . . . . . . . . . . . . . . . . . 1-11
3. Sensors . . . . . . . . . . . . . . . . . . . . . 1-12
4. Interlock Switches . . . . . . . . . . . . . . . . . 1-13
5. Others . . . . . . . . . . . . . . . . . . . . . . 1-13
6. Optional Equipment . . . . . . . . . . . . . . . . 1-14
1.4. OVERALL MACHINE CONTROL * . . . . . . . . . . . . 1-15
1.5. VIDEO DATA PATH . . . . . . . . . . . . . . . . . . 1-16
1.5.1. Transmission * . . . . . . . . . . . . . . . . . . 1-16
1.5.2. Reception * . . . . . . . . . . . . . . . . . . . 1-17
1.5.3. Copying . . . . . . . . . . . . . . . . . . . . 1-18
1.5.4. Printing from the Optional Printer Interface . . . . . . . 1-19
1.6. POWER DISTRIBUTION . . . . . . . . . . . . . . . . 1-20
1.6.1. Distribution Diagram * . . . . . . . . . . . . . . . 1-20
1.6.2. Memory Back-up Circuit . . . . . . . . . . . . . . 1-21
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 . . . . . . . . . . . . . . . 2-1
3. Drive Mechanism * . . . . . . . . . . . . . . . . . 2-2
4. Image Scanning * . . . . . . . . . . . . . . . . . 2-3
5. Sub Scan Resolution Conversion . . . . . . . . . . . 2-4
6. Stamping . . . . . . . . . . . . . . . . . . . . . 2-4
2.1.2. Scanner Timing Chart . . . . . . . . . . . . . . . 2-5
1. Timing Chart . . . . . . . . . . . . . . . . . . . 2-5
2. Jam Conditions . . . . . . . . . . . . . . . . . . 2-6
2.1.3. Video Processing . . . . . . . . . . . . . . . . . 2-7
1. Analog Signal Processing . . . . . . . . . . . . . . 2-7
2. Digital Video Processing Steps . . . . . . . . . . . . 2-8
3. Video Processing Parameters . . . . . . . . . . . . 2-11
2.2. PRINTING . . . . . . . . . . . . . . . . . . . . . . 2-12

2.2.1. Printing Process - Overview . . . . . . . . . . . . . 2-12
2.2.2. OPC Drum . . . . . . . . . . . . . . . . . . . . 2-13
2.2.3. Charge . . . . . . . . . . . . . . . . . . . . . 2-13
2.2.4. Laser Exposure . . . . . . . . . . . . . . . . . . 2-15
1. Overview . . . . . . . . . . . . . . . . . . . . . 2-15
2. Block Diagram . . . . . . . . . . . . . . . . . . 2-16
3. Error Conditions . . . . . . . . . . . . . . . . . . 2-16
4. Print Density Adjustment . . . . . . . . . . . . . . . 2-17
5. Toner Saving Mode . . . . . . . . . . . . . . . . . 2-17
2.2.5. Toner Supply . . . . . . . . . . . . . . . . . . . 2-18
2.2.6. Development . . . . . . . . . . . . . . . . . . . 2-21
2.2.7. Paper Feed . . . . . . . . . . . . . . . . . . . 2-26
1. Overview * . . . . . . . . . . . . . . . . . . . . 2-26
2. Paper Lift Mechanism . . . . . . . . . . . . . . . . 2-27
3. Paper Size and Paper End Detection . . . . . . . . . . 2-28
4. Pick-up and Separation . . . . . . . . . . . . . . . 2-30
5. Drive Mechanism . . . . . . . . . . . . . . . . . 2-30
2.2.8. Registration . . . . . . . . . . . . . . . . . . . 2-33
2.2.9. Transfer and Separation . . . . . . . . . . . . . . 2-35
2.2.10. Cleaning . . . . . . . . . . . . . . . . . . . . 2-38
2.2.11. Fusing . . . . . . . . . . . . . . . . . . . . . 2-39
2.2.12. Page Separation and Data Reduction . . . . . . . . 2-43
2.2.13. Paper Size Selection * . . . . . . . . . . . . . . 2-45
2.3. SYSTEM FEATURES . . . . . . . . . . . . . . . . . 2-46
2.3.1. Power Saver Modes * . . . . . . . . . . . . . . . 2-46
1. Going into a Power Saver Mode . . . . . . . . . . . . 2-47
2. Going into Level 2 Mode from Level 1 Mode * . . . . . . 2-49
3. Receiving a Fax Message in Power Saver Mode . . . . . 2-51
4. Sending a Fax Message or Copying in Power Saver Mode . 2-53
2.3.2. Automatic Service Calls . . . . . . . . . . . . . . 2-55
1. Service Call Conditions . . . . . . . . . . . . . . . 2-55
2. Excessive Jam Alarms . . . . . . . . . . . . . . . 2-56
3. Periodic Service Call . . . . . . . . . . . . . . . . 2-57
4. PM Call . . . . . . . . . . . . . . . . . . . . . 2-58
5. Effective Term of Service Calls . . . . . . . . . . . . 2-58
2.4. PCBs . . . . . . . . . . . . . . . . . . . . . . . 2-59
2.4.1. FCE2 * . . . . . . . . . . . . . . . . . . . . . 2-59
1. FCIP (Facsimile Controller and Image Processor) . . . . . 2-59
2. Modem (Rockwell R144EFXL) * . . . . . . . . . . . . 2-59
3. ROM * . . . . . . . . . . . . . . . . . . . . . . 2-60
4. DRAM * . . . . . . . . . . . . . . . . . . . . . 2-60
5. SRAM . . . . . . . . . . . . . . . . . . . . . . 2-60
6. Video SRAM . . . . . . . . . . . . . . . . . . . 2-60
7. Oscillators * . . . . . . . . . . . . . . . . . . . . 2-60

8. Jumpers, Switches, and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . 2-60
2.4.2. FDU * . . . . . . . . . . . . . . . . . . . . . . 2-61
1. Power Saver CPU . . . . . . . . . . . . . . . . . 2-61
2. FPD (Facsimile Power Driver) . . . . . . . . . . . . 2-61
3. EXIO (External I/O) * . . . . . . . . . . . . . . . . 2-61
4. HIC (Hybrid IC) . . . . . . . . . . . . . . . . . . 2-61
5. DC/DC Converters . . . . . . . . . . . . . . . . . 2-61
6. Interlock Switches . . . . . . . . . . . . . . . . . 2-62
7. Jumpers, Switches, and Test Points . . . . . . . . . . 2-62
2.4.3. PSU . . . . . . . . . . . . . . . . . . . . . . 2-62
2.4.4. NCU (USA) . . . . . . . . . . . . . . . . . . . 2-63
1. Jumpers . . . . . . . . . . . . . . . . . . . . . 2-63
2.4.5. NCU (Europe/Asia) . . . . . . . . . . . . . . . . 2-64
1. Control Signals and Jumpers . . . . . . . . . . . . . 2-64
3. INSTALLATION
3.1. INSTALLING THE MACHINE . . . . . . . . . . . . . . 3-1
3.2. INITIAL PROGRAMMING . . . . . . . . . . . . . . . 3-1
3.3. INSTALLING OPTIONAL UNITS . . . . . . . . . . . . . 3-2
3.3.1. Printer Interface . . . . . . . . . . . . . . . . . . 3-2
3.3.2. Counter . . . . . . . . . . . . . . . . . . . . . 3-3
3.3.3. Handset . . . . . . . . . . . . . . . . . . . . . 3-3
3.3.4. RS232C Interface . . . . . . . . . . . . . . . . . 3-4
4. SERVICE TABLES AND PROCEDURES
4.1. SERVICE LEVEL FUNCTIONS . . . . . . . . . . . . . 4-1
4.1.1. Bit Switch Programming (Function 01) . . . . . . . . . 4-1
4.1.2. System Parameter List (Function 02) . . . . . . . . . 4-2
4.1.3. Error Code Display (Function 03) . . . . . . . . . . . 4-3
4.1.4. Service Monitor Report (Function 04) . . . . . . . . . 4-3
4.1.5. Protocol Dump (Function 05) . . . . . . . . . . . . 4-4
4.1.6. RAM Display/Rewrite (Function 06) . . . . . . . . . . 4-4
4.1.7. RAM Dump (Function 06) . . . . . . . . . . . . . . 4-5
4.1.8. Counter Display/Rewrite (Function 07) . . . . . . . . . 4-5
4.1.9. NCU Parameters (Function 08) . . . . . . . . . . . . 4-6
4.1.10. Modem Test (Function 08) . . . . . . . . . . . . . 4-7
4.1.11. DTMF Tone Test (Function 08) . . . . . . . . . . . 4-7
4.1.12. Modem Detection Test (Function 08) . . . . . . . . . 4-8
4.1.13. Ringer Test (Function 08) . . . . . . . . . . . . . 4-8
4.1.14. Operation Panel Test (Function 09) . . . . . . . . . 4-9
4.1.15. LED Array Test (Function 10) . . . . . . . . . . . . 4-9
4.1.16. ADF Test (Function 10) . . . . . . . . . . . . . . 4-10
4.1.17. Printer Test Patterns (Function 11) . . . . . . . . . . 4-10

4.1.18. Printer Mechanism Test - Free Run (Function 11) . . . . 4-11
4.1.19. RAM Tests (Function 12) . . . . . . . . . . . . . . 4-11
4.1.20. Software Download (Function 12) . . . . . . . . . . 4-12
4.1.21. Software Upload (Function 12) . . . . . . . . . . . 4-13
4.1.22. SRAM Data Download (Function 12) . . . . . . . . . 4-14
4.1.23. Serial Number (Function 14) . . . . . . . . . . . . 4-15
4.1.24. Service Station Fax Number (Function 13) . . . . . . . 4-15
4.2. BIT SWITCHES . . . . . . . . . . . . . . . . . . . 4-16
4.2.1. System Switches . . . . . . . . . . . . . . . . . 4-16
4.2.2. Scanner Switches . . . . . . . . . . . . . . . . 4-25
4.2.3. Printer Switches . . . . . . . . . . . . . . . . . 4-27
4.2.4. Communication Switches . . . . . . . . . . . . . . 4-30
4.2.5. G3 Switches . . . . . . . . . . . . . . . . . . . 4-36
4.3. NCU PARAMETERS * . . . . . . . . . . . . . . . . . 4-42
4.4. DEDICATED TRANSMISSION PARAMETERS . . . . . . . 4-70
4.4.1. Programming Procedure . . . . . . . . . . . . . . 4-70
4.4.2. Parameters . . . . . . . . . . . . . . . . . . . 4-71
4.5. SERVICE RAM ADDRESSES * . . . . . . . . . . . . . 4-73
4.6. SPECIAL TOOLS AND LUBRICANTS . . . . . . . . . . 4-86
4.7. PM TABLE . . . . . . . . . . . . . . . . . . . . . 4-86
5. REPLACEMENT AND ADJUSTMENT
5.1. COVERS . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1.1. Document Table and Tray . . . . . . . . . . . . . . 5-1
5.1.2. Rear Cover Assembly . . . . . . . . . . . . . . . 5-2
5.1.3. Left Cover . . . . . . . . . . . . . . . . . . . . 5-2
5.1.4. Right Cover . . . . . . . . . . . . . . . . . . . 5-3
5.1.5. Operation Panel Assembly . . . . . . . . . . . . . 5-3
5.1.6. Operation Panel and ADF Upper Unit . . . . . . . . . 5-4
5.1.7. Top Cover . . . . . . . . . . . . . . . . . . . . 5-4
5.2. OPERATION PANEL . . . . . . . . . . . . . . . . . 5-5
5.2.1. Operation Panel and OPU . . . . . . . . . . . . . 5-5
5.3. ADF . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5.3.1. ADF Roller Assembly . . . . . . . . . . . . . . . . 5-5
5.3.2. Separation Rubber Plate . . . . . . . . . . . . . . 5-6
5.3.3. Separation Pressure Adjustment . . . . . . . . . . . 5-6
5.3.4. ADF Sensors . . . . . . . . . . . . . . . . . . . 5-7
5.3.5. Scanner Shading Plate . . . . . . . . . . . . . . . 5-7
5.4. SCANNER . . . . . . . . . . . . . . . . . . . . . 5-8
5.4.1. Scanner Unit Disassembly . . . . . . . . . . . . . 5-8
5.4.2. Tx Motor and Drive Components . . . . . . . . . . . 5-8
5.4.3. R1/R2 Rollers . . . . . . . . . . . . . . . . . . 5-9
5.4.4. Contact Image Sensor . . . . . . . . . . . . . . . 5-10
5.5. LASER PRINTING COMPONENTS . . . . . . . . . . . 5-11
5.5.1. Laser Unit . . . . . . . . . . . . . . . . . . . . 5-11

5.5.2. Laser Diode Unit and Hexagonal Mirror Motor . . . . . . 5-12
5.6. DEVELOPMENT . . . . . . . . . . . . . . . . . . . 5-13
5.6.1. Development Unit . . . . . . . . . . . . . . . . . 5-13
5.6.2. Transfer Roller . . . . . . . . . . . . . . . . . . 5-14
5.6.3. Main Motor and Gears . . . . . . . . . . . . . . . 5-14
5.6.4. Replacing the Development Unit . . . . . . . . . . . 5-15
5.7. FUSING . . . . . . . . . . . . . . . . . . . . . . 5-18
5.7.1. Thermistor . . . . . . . . . . . . . . . . . . . . 5-18
5.7.2. Fusing Unit . . . . . . . . . . . . . . . . . . . 5-18
5.7.3. Hot Roller Strippers . . . . . . . . . . . . . . . . 5-20
5.7.4. Fusing Lamp . . . . . . . . . . . . . . . . . . . 5-20
5.7.5. Hot Roller . . . . . . . . . . . . . . . . . . . . 5-21
5.7.6. Pressure Roller . . . . . . . . . . . . . . . . . . 5-23
5.7.7. Thermostat and Thermofuse . . . . . . . . . . . . . 5-23
5.8. PAPER FEED . . . . . . . . . . . . . . . . . . . . 5-24
5.8.1. Paper Feed Motor and Clutch Box . . . . . . . . . . 5-24
5.8.2. Paper End Sensor . . . . . . . . . . . . . . . . . 5-24
5.8.3. Paper Feed Rollers, Paper Size Sensor, and Relay Connector 5-25
5.8.4. Registration Roller and Bypass Feed Sensor . . . . . . 5-26
5.9. PCBs . . . . . . . . . . . . . . . . . . . . . . . 5-27
5.9.1. PSU and NCU . . . . . . . . . . . . . . . . . . 5-27
5.9.2. NCU, FDU, and FCE . . . . . . . . . . . . . . . . 5-27
5.9.3. Power Pack . . . . . . . . . . . . . . . . . . . 5-28
5.10. OTHERS . . . . . . . . . . . . . . . . . . . . . . 5-29
5.10.1. Ozone Filter and Fan Motor . . . . . . . . . . . . 5-29
5.11. 100 SHEET PAPER CASSETTE (OPTIONAL) . . . . . . . 5-29
5.11.1. Relay Connector and Gear Cover . . . . . . . . . . 5-29
5.11.2. Paper End Sensor and Drive Components . . . . . . . 5-30
5.11.3. Paper Size Sensor . . . . . . . . . . . . . . . . 5-31
5.12. IMAGE ADJUSTMENT . . . . . . . . . . . . . . . . 5-32
5.12.1. Overview . . . . . . . . . . . . . . . . . . . . 5-32
5.12.2. Scanner Parameters . . . . . . . . . . . . . . . 5-33
1. Contrast . . . . . . . . . . . . . . . . . . . . . 5-33
2. Margins . . . . . . . . . . . . . . . . . . . . . 5-33
5.12.3. Printer Parameters . . . . . . . . . . . . . . . . 5-34
1. Margins (Main Scan Direction) * . . . . . . . . . . . . 5-34
2. Margins (Sub Scan Direction) * . . . . . . . . . . . . 5-35
6. TROUBLESHOOTING
6.1. COPY QUALITY TROUBLESHOOTING . . . . . . . . . . 6-1
6.1.1. Blank Copies . . . . . . . . . . . . . . . . . . . 6-2
6.1.2. Black Copies . . . . . . . . . . . . . . . . . . . 6-3
6.1.3. Dirty Background . . . . . . . . . . . . . . . . . 6-4
6.1.4. Uneven Image Density . . . . . . . . . . . . . . . 6-5
6.1.5. Vertical Black Lines . . . . . . . . . . . . . . . . 6-6

6.1.6. Horizontal Black Lines . . . . . . . . . . . . . . . 6-7
6.1.7. Vertical White Lines . . . . . . . . . . . . . . . . 6-8
6.1.8. Horizontal White Lines . . . . . . . . . . . . . . . 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 Paper . . . . . . . . 6-16
6.1.16. Misaligned Output (Data shifted to the right or left) . . . 6-17
6.1.17. Misaligned Output (Image shifted vertically)/Reduced Image 6-17
6.2. MECHANICAL PROBLEMS . . . . . . . . . . . . . . 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. Printer . . . . . . . . . . . . . . . . . . . . . 6-21
1. Non-feed . . . . . . . . . . . . . . . . . . . . . 6-21
2. Paper Jam - Inside Printer . . . . . . . . . . . . . . 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 COMPONENT DEFECTS . . . . . . . . . 6-37
6.5.1. Defective Sensor Table . . . . . . . . . . . . . . . 6-37
6.5.2. Blown Fuse Table . . . . . . . . . . . . . . . . . 6-37

1. OVERALL MACHINE INFORMATION
1.1. SPECIFICATIONS *
Type
Desktop type transceiver
Circuit
PSTN, PABX
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/m2)
Document Feed
Automatic feed, face down
ADF Capacity
30 sheets (using 20 lb or 80 g/m2paper)
Scanning Method
Contact image sensor
Maximum Scan Width
256 mm [10.1 ins] ±0.25%
Scan Resolutions
Main scan: 8 dots/mm [203 dpi]
Sub scan:
Standard - 3.85 lines/mm [98 lpi]
Detail - 7.7 lines/mm [196 lpi]
Fine - 15.4 lines/mm [392 lpi]
Memory Capacity
ECM: 64 or 128 kbytes
(depends on the amount of image data)
SAF: 512 kbytes (38 pages/Slerexe letter),
extra 2 Mbyte (186 pages) or 4 Mbyte (350
pages) memory card available
Compression
MH, MR, EFC, MMR, SSC (MMR only with
ECM)
SAF storage for memory tx: MMR and raw
data
Protocol
Group 3 with ECM
Modulation
V.33/ V.17(TCM), V.29 (QAM), V.27ter
(PHM), V.21 (FM)
Data Rate (bps)
14,400/12,000/9600/7200/4800/2400
Automatic fallback
I/O Rate
With ECM: 0 ms/line
Without ECM: 2.5, 5, 10, 20, or 40 ms/line
Transmission Time
6 s at 14,400 bps; Measured with G3 ECM
using memory for a ITU-T #1 test document
(Slerexe letter) at standard resolution
Printing System
Laser printing, plain paper, dry toner
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
Maximum Printing Width
208 mm [8.1 ins]
Print Resolutions
Fax and Copy Mode:
Main scan: 16 dots per mm [406 dpi]
Sub scan: 15.4 lines/mm [392 lpi]
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; Normal 20 W
Transmit: 25 W
Receive: 210 W
Copying: 270 W
August 2nd, 1995 OVERALL MACHINE INFORMATION
SPECIFICATIONS *
1-1

Operating Environment
Temperature: 17 - 28 °C [63 - 82 °F]
Humidity: 40 - 70 %Rh
Dimensions (W x D x H)
475 x 459 x 240 mm [18.7 x 18.1 x 9.4 ins]
Excluding handset, trays, and optional units
Weight
Approx. 17 kg [37 lbs]
Excluding CTM, handset, trays, and optional
units
OVERALL MACHINE INFORMATION August 2nd, 1995
SPECIFICATIONS *
1-2

1.2. FEATURES *
KEY: O = Used, X = Not Used,
A= With optional memory only,
B = With optional 100 sheet cassette only
C = With optional counter only
D = With optional handset only
E = With optional printer interface only
F = With optional paper feed unit only
Equipment
ADF O
Book scan X
Built-in handset X
Bypass feed: 1 sheet O
Optional cassette: 100 sheets B
Optional cassette: Universal O
Optional paper feed unit F
Cabinet X
Mechanical Counter C
Cutter X
Handset D
Hard disk X
Manual feed mechanism X
Marker (Stamp) O
Monitor speaker O
Optional printer interface E
Video Processing Features
Contrast O
Halftone (Basic & Error Diffusion) O
MTF O
Reduction (B4 -> A4) O
Resolution O
Smoothing to 16 x 15.4 l/mm O
Communication Features - Auto
Automatic fallback O
Automatic redialing O
Confidential reception A
Dual Access O
Substitute reception O
Communication Features -
User Selectable
Action as a transfer broadcaster X
AI Redial (last ten numbers) O
Answering machine interface X
Communication Features -
User Selectable
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
Broadcasting O
Chain Dialing O
Communication Result Display X
Confidential ID Override O
Confidential Transmission O
Direct Fax Number Entry O
Economy Transmission X
Fax on demand X
Forwarding A
Free Polling O
Groups (7 groups) O
Group Transfer Station X
Hold X
ID Transmission O
Immediate Redialing O
Immediate transmission O
Keystroke Programs O
Memory transmission O
Multi-step Transfer X
Next Transfer Station X
OMR X
On Hook Dial O
Ordering Toner X
Page Count O
Personal Codes O
Personal Codes with Conf. ID A
Polling Reception O
Polling Transmission O
Polling tx file lifetime in the SAF O
Quick Dial (32 stations) O
Reception modes (Fax, Tel, Auto) O
Length Reduction O
Remote control features X
Remote Transfer X
Restricted Access O
Secured Polling O
August 2nd, 1995 OVERALL MACHINE INFORMATION
FEATURES *
1-3

Communication Features -
User Selectable
Secured Polling with Stored ID
Override O
Secure Transmission X
Send Later O
Silent ringing detection X
Specified Image Area X
Speed Dial (90 stations) O
Super Fine Resolution
(16 x15.4 l/mm : 400 x 400 dpi) X
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
Closed Network (tx and rx) O
Continuous Polling Reception O
Dedicated tx parameters O
ECM O
EFC O
Inch-mm conversion X
Page retransmission times O
Page separation mark O
Protection against wrong conn. O
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
Other User Features
Copy editing (Erase Center/Mar-
gin) X
Copy mode O
Copy Mode Restriction X
Counters O
Daylight Saving Time O
Destination Check X
Direct entry of names O
File Retention Time X
File Retransmission X
Function Programs O
ID Code O
Label Insertion ("From xxx") O
Language Selection O
LCD contrast control Service
Memory Lock A
Memory Lock ID A
Modifying a memory file X
Multi Sort Document Reception A
Multicopy mode O
Own telephone number O
Power Saver (Night Timer and
standby mode) O
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 X
Reverse Order Printing A
RTI, TTI, CSI O
Secure ID X
Service Report Transmission O
Speaker volume control O
Specified Cassette Selection B
Substitute reception on/off O
Telephone line type O
Toner Saving Mode O
TTI on/off O
User Function Keys X
User Parameters O
Wild Cards O
OVERALL MACHINE INFORMATION August 2nd, 1995
FEATURES *
1-4

Reports - Automatic
Charge Control Report X
Communication Failure Report O
Confidential File Report A
Error Report O
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 X
Transmission Result Report O
Reports - User-initiated
Authorized Reception List O
Charge Control Report X
File List O
Forwarding List A
Group List O
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 X
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
Service Mode Features
File Transfer O
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 X
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
Memory Files
Max. number of files: 100
Max. number of stations/file: 132
Max. number of stations overall: 300
August 2nd, 1995 OVERALL MACHINE INFORMATION
FEATURES *
1-5

1.3. COMPONENT LAYOUT
1.3.1. Mechanical Components
No. Name Description
1R2 Roller Feeds the document through the scanner.
2R1 Roller Feeds the document through the scanner.
3Document Feed Roller Feeds the document into the scanner.
4Separation Pad Allows one page into the scanner.
5Pick-up Roller Picks up pages of the document from the document
table one at a time.
6Pressure Plate This applies pressure against the pick-up roller.
7CTM (Cleaning Toner
Magazine) This consists of the toner cartridge, cleaning unit, used toner tank, charge corona unit, and quenching lamp.
8Used Toner Tank This removes and stores excess toner from the master
after image transfer. It is part of the CTM.
17
18
19
20
21
23
22
24 27
26 30
28
25
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2
3
4
5
6
87
1014 9
12 11
13
15
16
31
29
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OVERALL MACHINE INFORMATION August 2nd, 1995
COMPONENT LAYOUT
1-6

No. Name Description
9Charge Corona Unit This applies a charge to the drum at the start of the
print cycle. It is part of the CTM.
10 Quenching Lamp This removes excess charge from the master at the
end of the print cycle. It is part of the CTM.
11 Cleaning Blade This wipes toner off the OPC drum.
12 Used Toner Collection
Roller This catches the used toner and the transfers the toner to the used toner tank. It is part of the CTM.
13 Hot Roller Heat from this roller fuses the toner to the copy paper.
14 Cleaning Pad This cleans up and spreads silicone oil on the surface
of the hot roller.
15 Hot Roller Strippers These take the paper off the hot roller after fusing.
16 Paper Feed-out Rollers These feed the paper out of the printer.
17 Fusing Pressure Roller This applies pressure to the paper during the fusing
process.
18 OPC Drum The latent image is written to this Organic
Photoconductor Drum.
19 Development Unit This consists of the development roller, toner
application roller, toner supply bar, and transfer roller.
20 Transfer Roller This applies a charge to the paper to pull the toner off
the drum and onto the copy paper.
21 Development Roller This roller applies toner to the latent image on the drum.
22 Toner Application Roller This roller transfers toner to the development roller.
23 Toner Supply Bar This stirs up and transfers toner to the toner application
roller.
24 Paper Feed Rollers (100
Sheet Cassette) These pick up the top sheet of paper from the stack in the optional 100 sheet cassette and feed it into the
printer.
25 Paper Feed Pressure
Rollers These feed paper from the cassette or bypass feed slot into the printer.
26 Registration Roller This carries out the registration process.
27 Paper Feed Rollers These pick up the top sheet of paper from the stack in
the cassette and feed it into the printer.
28 Toner Supply Roller This supplies toner to the development unit. It is part of
the toner tank.
29 Toner Agitator This stirs up toner in the toner tank, so that it does not
collect into lumps.
30 Toner Tank This supplies toner to the development unit. It is part of
the CTM.
31 Laser Unit This consists of the LDDR (Laser Diode Driver),
Focusing lens, FθLenses, Hexagonal mirror motor, and
other laser optic components.
August 2nd, 1995 OVERALL MACHINE INFORMATION
COMPONENT LAYOUT
1-7

1.3.2. Drive Components
No. Name Description
1Tx Motor This stepper motor drives the scanner.
2R1/R2 Rollers These feed the document through the scanner.
3Document Feed Drive
Gear This drives the document feed and pick-up rollers.
4Document Feed Roller
Drive Gear This drives the document feed roller.
5Pick-up Roller Drive Gear This drives the pick-up roller.
6Drum Drive Gear This drives the drum.
7Used Toner Collection
Roller Drive Gear This drives the used toner collection roller (magnetic) in the used toner tank.
8Transfer Roller Drive Gear This drives the transfer roller.
9Hot Roller Drive Gear This drives the hot roller.
10 Fusing Pressure Roller
Drive Gear This drives the pressure roller in the fusing unit.
1
2
3
56
7
8
9
10
11
12
13
14
15
16 18 19 20 21
4
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OVERALL MACHINE INFORMATION August 2nd, 1995
COMPONENT LAYOUT
1-8

No. Name Description
11 Paper Feed-out Roller This feeds printouts out of the machine.
12 Development Roller Drive
Gear This drives the development roller.
13 Toner Application Roller
Drive Gear This drives the toner application roller.
14 Paper Feed Roller Drive
Gear (100 Sheet Cassette) This drives the paper feed roller in the optional 100 sheet cassette.
15 Registration Roller Drive
Gear This drives the registration roller.
16 Paper Feed Motor This stepper motor drives the paper feed mechanisms
and the registration roller.
17 Paper Feed Roller Drive
Gear Box The gears in this box drive the paper feed roller in the main cassette.
18 Paper Feed Roller Drive
Gear This drives the paper feed roller.
19 Main Motor This brushless dc motor drives the drum, fusing unit,
development unit, and CTM.
20 Toner Supply Gear This ensures the supply of toner from the tonertank in
the CTM, and its distribution across the full length of
the development unit.
21 Toner Agitator Drive Gear This drives the toner agitator.
22 CTM Drive Gear This drives the CTM.
August 2nd, 1995 OVERALL MACHINE INFORMATION
COMPONENT LAYOUT
1-9

1.3.3. Electrical Components
5
3
7
4
6
2
8
9
10
11
14
13
12
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OVERALL MACHINE INFORMATION August 2nd, 1995
COMPONENT LAYOUT
1-10

1. PCBs
No. Name Description
3FDU (Facsimile Driver
Unit) This board contains drivers for the motors, a dc-dc converter, the energy saving mode cpu, and other drive
electronics.
6FCE (Facsimile Control
Engine) This board controls the machine. It contains the main cpu, flash ROM, system RAM, and so on.
2NCU (Network Control
Unit) This board contains a relay and switches for interfacing the machine to the network and the handset.
7OPU (Operation Panel
Unit) This board controls the operation panel.
1PSU (Power Supply Unit) This board supplies power to the machine, and
switches the fusing lamp on/off.
8LDDR (Laser Diode
Driver) This board drives the laser diode.
10 Power Pack This supplies high voltages to the corona wire, transfer
roller, and development rollers.
4
Contact Image Sensor
Assembly This sensor reads and converts the light reflected from the document into an analog video signal. It uses an
RLA (Rod Lens Array) sensor unit.
An LED array which illuminates the document is
contained in this unit.
2. Motors
No. Name Description
14 Tx Motor This stepper motor drives the scanner.
13 Main Motor This brushless dc motor drives the drum, fusing unit,
development unit, and CTM.
12 Paper Feed Motor This stepper motor drives the registration roller and the
paper feed mechanisms in the cassettes.
5Hexagonal Mirror Motor This high-speed dc motor drives the hexagonal mirror
in the laser printer optics.
9Ozone Fan Motor This removes ozone-laden air from the vicinity of the
drum, and filters out the ozone.
11 Cooling Fan Motor This cools the interior of the machine.
August 2nd, 1995 OVERALL MACHINE INFORMATION
COMPONENT LAYOUT
1-11

3. Sensors
No. Name Description
17 Document Sensor This detects the presence of a document in the feeder.
15 Scan Line Sensor This detects when a page is approaching the auto
shading position.
31 Toner End Sensor This detects when the toner has run out.
27 Paper Size Detector This detects the paper size installed in the cassette.
The user must install the correct size indicator.
32 Paper End Sensor This detects when the paper in the cassette has run out.
26 Registration Sensor This detects when paper has reached the registration
roller.
29 Fusing Exit Sensor This detects when the paper has been fed out of the
printer.
28 Fusing Exit Cover Switch This detects whether the fusing exit cover is open or
closed.
25
Bypass Feed Sensor This detects when a sheet of paper has been inserted
into the bypass feed slot. Then the registration roller
feeds the paper a short distance into the machine to
prepare for printing, and stops.
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15
27
17
18
19
33
32
30
28
29
31
22
23
25
24
26
20
21
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OVERALL MACHINE INFORMATION August 2nd, 1995
COMPONENT LAYOUT
1-12