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RICOH FAX880 MP Printer, Scanner, Copier and Fax
MV 74
SERVICE MANUAL AND PARTS
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IFO RICOH FAX880 MP MV 74 SERVICE MANUAL
November 28th, 1995 Subject to change Printed in Japan
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.
Important: Before servicing this machine, please read the following notes.
· · ·
·
· · ·
Do not touch the nozzle section in the ink cartridge. This helps prevent the nozzles from clogging. Do not touch the wiper blade on the purge unit. This also helps prevent the nozzles from clogging. (Please refer to section 2.2 for details.) Do not touch the aluminum plate on the ink cartridge. The aluminum plate heats up during printing. It becomes quite hot during continuous high duty printing. After repairs or maintenance, excessive ink may remain on the contact section of the cartridge, covers, and TIJ unit. Remove this ink with a dry cloth. The ink is electrically conductive and it may short an electrical component. Always store an extra cartridge (if unpacked) in the cartridge box included with the machine. Ensure that the TIJ unit has completed its cleaning operation before unplugging the machine. Ensure that the carriage is at the head capping position (home position) before leaving the machine unplugged for long periods.
Table of Contents
1. OVERALL MACHINE INFORMATION
1.1. SPECIFICATIONS . . . . . . . . . 1.2. FEATURES . . . . . . . . . . . . 1.3. COMPONENT LAYOUT . . . . . . . 1.3.1. Mechanical Components . . . . . 1.3.2. Electrical Components . . . . . . 1. PCBs . . . . . . . . . . . . . 2. Motors . . . . . . . . . . . . . 3. Sensors . . . . . . . . . . . . 1.4. OVERALL MACHINE CONTROL . . . 1.5. VIDEO DATA PATH . . . . . . . . . 1.5.1. Transmission . . . . . . . . . . 1.5.2. Reception . . . . . . . . . . . 1.5.3. Copying . . . . . . . . . . . . 1.5.4. Printing from the Centronics Interface 1.6. POWER DISTRIBUTION . . . . . . . 1.6.1. Distribution Diagram . . . . . . . 1.6.2. Memory Back-up Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1-2 1-5 1-5 1-6 1-6 1-7 1-7 1-8 1-10 1-10 1-11 1-12 1-13 1-14 1-14 1-15
2. DETAILED SECTION DESCRIPTIONS
2.1. SCANNER . . . . . . . . . . . . . . . . 2.1.1. Mechanisms . . . . . . . . . . . . . . 1. Document Detection, Pick-up and Separation and Drive Mechanism . . . . . . . . . . . . 2.1.2. Image Scanning . . . . . . . . . . . . 2.2. PRINTER . . . . . . . . . . . . . . . . . 2.2.1. Printer Configuration . . . . . . . . . . . 2.2.2. Ink Cartridge (Black and Color) . . . . . . . 2.2.3. Printer Head . . . . . . . . . . . . . . 1. Mechanism . . . . . . . . . . . . . . . 2. Drive Circuitry . . . . . . . . . . . . . . 3. Print Signals . . . . . . . . . . . . . . 2.2.4. Purge Unit . . . . . . . . . . . . . . . 1. Components . . . . . . . . . . . . . . 2. Purge Unit Functions . . . . . . . . . . . 2.2.5. Paper Feed . . . . . . . . . . . . . . 1. Overview . . . . . . . . . . . . . . . . 2. Drive Mechanism . . . . . . . . . . . . 2.2.6. Ink End Detection . . . . . . . . . . . . 2.2.7. Maximum Print Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2-1 2-1 2-2 2-4 2-4 2-5 2-6 2-6 2-7 2-8 2-9 2-9 2-10 2-11 2-11 2-12 2-13 2-14
2.2.8. Data Reduction and Page Separation . . . . 2.3. PCBs . . . . . . . . . . . . . . . . . . 2.3.1. FCE . . . . . . . . . . . . . . . . . 1. FCIP (Facsimile Controller and Image Processor) 2. ROM . . . . . . . . . . . . . . . . . 3. DRAM . . . . . . . . . . . . . . . . . 4. SRAM . . . . . . . . . . . . . . . . . 5. Video SRAM . . . . . . . . . . . . . . 6. Oscillators . . . . . . . . . . . . . . . 7. Jumpers, Switches, and Test Points . . . . . 2.3.2. FDU . . . . . . . . . . . . . . . . . 1. Printer Head Drive Circuit . . . . . . . . . 2. Drivers . . . . . . . . . . . . . . . . . 3. Sensors . . . . . . . . . . . . . . . . 4. DC/DC Converter . . . . . . . . . . . . 5. Battery . . . . . . . . . . . . . . . . . 6. Jumpers, Switches, and Test Points . . . . . 2.3.3. IJC . . . . . . . . . . . . . . . . . . 1. CPU (MPU) . . . . . . . . . . . . . . . 2. Printer controller . . . . . . . . . . . . . 3. ROM . . . . . . . . . . . . . . . . . 4. DRAM . . . . . . . . . . . . . . . . . 5. Oscillators . . . . . . . . . . . . . . . 6. Raster Image Data Controller (RIDC2) . . . . 7. SRAM . . . . . . . . . . . . . . . . . 8. HIC (Hybrid IC) . . . . . . . . . . . . . 9. EEPROM . . . . . . . . . . . . . . . . 10. Centronics Interface . . . . . . . . . . . 11. Jumpers, Switches, and Test Points . . . . . 2.3.4. PSU . . . . . . . . . . . . . . . . . 2.3.5. NCU (USA) . . . . . . . . . . . . . . 1. Jumpers . . . . . . . . . . . . . . . . 2.3.6. NCU (Europe/Asia) . . . . . . . . . . . 1. Control Signals and Jumpers . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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2-15 2-16 2-16 2-16 2-16 2-17 2-17 2-17 2-17 2-17 2-18 2-18 2-18 2-18 2-19 2-19 2-19 2-20 2-20 2-20 2-20 2-20 2-21 2-21 2-21 2-21 2-21 2-21 2-21 2-22 2-23 2-23 2-24 2-24
3. INSTALLATION
3.1. INSTALLING THE MACHINE . . . . . . . . . . . . . . 3.2. INITIAL PROGRAMMING . . . . . . . . . . . . . . . 3-1 3-1
4. SERVICE TABLES AND PROCEDURES
4.1. SERVICE LEVEL FUNCTIONS . . . . . . . . . . . . . 4.1.1. Bit Switch Programming (Function 01) . . . . . . . . . 4.1.2. System Parameter List (Function 02) . . . . . . . . . 4-1 4-1 4-2
4.1.3. Error Code Display (Function 03) . . . . . . . . . . 4.1.4. Service Monitor Report (Function 04) . . . . . . . . 4.1.5. Protocol Dump (Function 05) . . . . . . . . . . . 4.1.6. RAM Display/Rewrite (Function 06) . . . . . . . . . 4.1.7. RAM Dump (Function 06) . . . . . . . . . . . . . 4.1.8. Counter Display/Rewrite (Function 07) . . . . . . . . 4.1.9. NCU Parameters (Function 08) . . . . . . . . . . . 4.1.10. Modem Test (Function 08) . . . . . . . . . . . . 4.1.11. DTMF Tone Test (Function 08) . . . . . . . . . . 4.1.12. Modem Detection Test (Function 08) . . . . . . . . 4.1.13. Operation Panel Test (Function 09) . . . . . . . . 4.1.14. LED Array Test (Function 10) . . . . . . . . . . . 4.1.15. ADF Test (Function 10) . . . . . . . . . . . . . 4.1.16. Printer Test Patterns (Function 11) . . . . . . . . . 4.1.17. Printing the EEPROM Information Sheet and Initializing the EEPROM (Function 11) . . . . . . . . . . . . 4.1.18. Printer Mechanism Test - Free Run (Function 11) . . . 4.1.19. Ink End Sensor Initialization (Function 11) . . . . . . 4.1.20. RAM Tests (Function 12) . . . . . . . . . . . . . 4.1.21. Software Download (Function 12) . . . . . . . . . 4.1.22. Software Upload (Function 12) . . . . . . . . . . 4.1.23. SRAM Data Download (Function 12) . . . . . . . . 4.1.24. Serial Number (Function 14) . . . . . . . . . . . 4.1.25. Service Station Fax Number (Function 13) . . . . . . 4.2. BIT SWITCHES . . . . . . . . . . . . . . . . . . 4.2.1. System Switches . . . . . . . . . . . . . . . . 4.2.2. Scanner Switches . . . . . . . . . . . . . . . 4.2.3. Printer Switches . . . . . . . . . . . . . . . . 4.2.4. Communication Switches . . . . . . . . . . . . . 4.2.5. G3 Switches . . . . . . . . . . . . . . . . . . 4.3. NCU PARAMETERS . . . . . . . . . . . . . . . . 4.4. DEDICATED TRANSMISSION PARAMETERS . . . . . . 4.4.1. Programming Procedure . . . . . . . . . . . . . 4.4.2. Parameters . . . . . . . . . . . . . . . . . . 4.5. SERVICE RAM ADDRESSES . . . . . . . . . . . . . 4.6. SPECIAL TOOLS AND LUBRICANTS . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-2 4-2 4-3 4-3 4-4 4-4 4-5 4-5 4-6 4-7 4-7 4-8 4-8 4-9 4-10 4-11 4-12 4-12 4-13 4-14 4-15 4-16 4-16 4-17 4-17 4-25 4-27 4-28 4-34 4-39 4-65 4-65 4-66 4-68 4-79
5. REMOVAL AND ADJUSTMENT
5.1. COVERS . . . . . . . . . . . . . . 5.1.1. Operation Panel Assembly [A and B] . 5.1.2. Upper Cover [A] and IC Card Cover [B] 5.2. Paper Feed Unit and Roller Assembly . . 5.2.1. Paper Feed Unit [A] . . . . . . . . 5.2.2. Paper Feed Roller Assembly [A] . . . 5.3. PCBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 5-1 5-2 5-2 5-2 5-3 5-3
5.3.1. PSU [A] . . . . . . . . . . . . . . . . . . . . 5.3.2. IJC [A] . . . . . . . . . . . . . . . . . . . . 5.3.3. FDU [A] . . . . . . . . . . . . . . . . . . . . 5.3.4. NCU [A] . . . . . . . . . . . . . . . . . . . . 5.4. SCANNER . . . . . . . . . . . . . . . . . . . . 5.4.1. Contact Image Sensor [A] . . . . . . . . . . . . . 5.4.2. Scanner Rollers [A, B, C] . . . . . . . . . . . . . 5.5. PRINTER . . . . . . . . . . . . . . . . . . . . . 5.5.1. Chassis [C] . . . . . . . . . . . . . . . . . . 5.5.2. Thermal Ink Jet (TIJ) Unit [A] and Paper Output Guide [B] 5.5.3. Purge Unit . . . . . . . . . . . . . . . . . . . 5.5.4. Ink Absorbers . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .
5-3 5-4 5-5 5-5 5-6 5-6 5-6 5-7 5-7 5-8 5-8 5-9
6. TROUBLESHOOTING
6.1. COPY QUALITY TROUBLESHOOTING . . . . . . 6.1.1. Blank Copies . . . . . . . . . . . . . . . 6.1.2. Black Copies . . . . . . . . . . . . . . . 6.1.3. Dirty Background . . . . . . . . . . . . . 6.1.4. Uneven Image Density . . . . . . . . . . . 6.1.5. Vertical Black Lines . . . . . . . . . . . . 6.1.6. Vertical White Lines . . . . . . . . . . . . 6.1.7. Horizontal White Lines . . . . . . . . . . . 6.1.8. Faint Copies . . . . . . . . . . . . . . . 6.1.9. Misaligned Output (Data shifted to the right or left) 6.1.10. Replace Cartridge Still Displayed After Cartridge Replacement . . . . . . . . 6.2. MECHANICAL PROBLEMS . . . . . . . . . . 6.2.1. ADF/Scanner . . . . . . . . . . . . . . . 1. Non-feed . . . . . . . . . . . . . . . . . 2. Jam . . . . . . . . . . . . . . . . . . . 3. Skew . . . . . . . . . . . . . . . . . . 4. Multi-feed . . . . . . . . . . . . . . . . 6.2.2. Printer . . . . . . . . . . . . . . . . . 1. Non-feed . . . . . . . . . . . . . . . . . 2. Paper Jam . . . . . . . . . . . . . . . . 3. Skew . . . . . . . . . . . . . . . . . . 4. Multi-feed . . . . . . . . . . . . . . . . 6.3. SERVICE CALL CONDITIONS . . . . . . . . . 6.4. ERROR CODES . . . . . . . . . . . . . . . 6.5. ELECTRICAL COMPONENT DEFECTS . . . . . 6.5.1. Defective Sensor Table . . . . . . . . . . . 6.5.2. Blown Fuse Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6-2 6-3 6-3 6-3 6-4 6-5 6-6 6-7 6-8 6-8 6-9 6-9 6-9 6-10 6-11 6-11 6-12 6-12 6-12 6-13 6-13 6-14 6-15 6-21 6-21 6-21
November 28th, 1995
OVERALL MACHINE INFORMATION SPECIFICATIONS
1. OVERALL MACHINE INFORMATION
1.1. SPECIFICATIONS
Type Desktop type transceiver Circuit PSTN, PABX Connection Direct couple Document Size Length: 105 - 600 mm [4.1 - 23.6 ins] Width: 148 - 220 mm [5.8 - 8.7 ins] Thickness: 0.05 to 0.15 mm [2 to 6 mils] (equivalent to 50 - 80 g/m2) Document Feed Automatic feed, face down ADF Capacity 15 sheets (using 20 lb. or 80 g/m2 paper) Scanning Method Contact image sensor Maximum Scan Width 216 mm [8.5 ins] 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 [391 lpi] Memory Capacity ECM: 64 kbytes (single buffer) for tx SAF: 400 kbytes (272 kbytes for tx) Compression MH, MR, EFC, MMR, SSC (MMR only with ECM) Protocol Group 3 with ECM Modulation V.29 (QAM), V.27ter (PHM), V.21 (FM) Data Rate (bps) 9600/7200/4800/2400, Automatic fallback Transmission Time 9 s at 9600 bps; Measured with G3 ECM using memory for a ITU-T #1 test document (Slerexe letter) at standard resolution Printing System Ink jet printing Paper Size Europe/Asia: A4 USA: Letter, Legal Paper Capacity 150 sheets Maximum Printing Width 203 mm [8.0 ins] Maximum Printer Resolutions Main scan: 360 dpi (720 dpi in the printer mode) Sub scan: 360 dpi Power Supply Europe/Asia: 220 - 240 Vac, 50 ± 3 Hz USA: 115 ± 20 Vac, 60 ± 3 Hz Power Consumption Standby: 5 W Receive: 14 W Printer: 19 W
Transmit: 12 W Copying: 24 W
Operating Environment Temperature: 17 - 28 °C [63 - 82 °F] Humidity: 40 - 70 %Rh Dimensions (W x D x H) 370 x 280 x 235 mm [14.6 x 11.0 x 9.3 ins] Excluding handset, trays, and tables Weight Approx. 7 kg [15 lbs]
1-1
OVERALL MACHINE INFORMATION FEATURES
November 28th, 1995
1.2. FEATURES
KEY: O = Used, X = Not Used, A = With optional memory only B = With optional handset only C = With color cartridge only Equipment ADF Book scan Built-in handset Bypass feed Optional cassette Cabinet Counter Cutter Handset (option) Hard disk Manual feed mechanism Marker (Stamp) Monitor speaker PC printer interface (IBM) Video Processing Features Contrast Halftone (Basic & Error Diffusion) MTF Reduction Resolution O X X X X X X X B X X X O O
X O O X 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 AI Redial (last ten numbers) Answering machine interface Authorized Reception Auto-answer delay time Auto dialing (pulse or DTMF) Auto Document
X X O O X O X
Communication Features User Selectable Auto image density selection Auto paper size selection Automatic Voice Message Batch Transmission (max 35 files) Broadcasting Chain Dialing Communication Result Display Confidential ID Override Confidential Transmission Direct Fax Number Entry Economy Transmission Fax on demand Forwarding Free Polling Groups (3 groups) Group Transfer Station Hold ID Transmission Immediate Redialing Immediate transmission Keystroke Programs Memory transmission Multi-step Transfer Next Transfer Station OMR On Hook Dial Ordering Toner Page Count Personal Codes Personal Codes with Conf. ID Polling Reception Polling Transmission Polling tx file lifetime in the SAF Quick Dial (10 stations) Reception modes (Auto, Tel, TAM) Length Reduction (in Rx mode, called Auto Reduction) Remote control features Remote Transfer Restricted Access Secured Polling
X X X A O O X O O O X X A O O X X O O O O O X X X O X O X X O O O O O O X X X O
1-2
November 28th, 1995
OVERALL MACHINE INFORMATION FEATURES
Communication Features User Selectable Secured Polling with Stored ID Override Secure Transmission Send Later Silent ringing detection Specified Image Area Speed Dial (50 stations) Super Fine Resolution (16 x15.4 l/mm : 400 x 400 dpi) Telephone Directory Tonal Signal Transmission Transfer Request Transmission Deadline (TRD) Turnaround Polling Two-step Transfer Two in one Voice Request (immed. tx only) Communication Features Service Selectable AI Short Protocol Auto-reduction override option Busy tone detection Closed Network (tx and rx) Continuous Polling Reception Dedicated tx parameters ECM EFC Inch-mm conversion Page retransmission: no. of times Page separation mark Protection against wrong conn. Resol'n stepdown override option Short Preamble Well log Other User Features Area code prefix Automatic service call Center mark Checkered mark Clearing a memory file Clearing a polling file Clock
O X O X X O X X O X A X X X X
O O O O X O O O X O O O X X X
X X X X O O O
Other User Features Confidential ID Copy editing (Erase Center/Margin) Copy mode Copy Mode Restriction Counters Daylight Saving Time Destination Check Direct entry of names File Retention Time File Retransmission Function Programs ID Code Label Insertion ("From xxx") Language Selection LCD contrast control Memory Lock Memory Lock ID Modifying a memory file Multi Sort Document Reception Multicopy mode Own telephone number Power Saver Print density control Printing a memory file RDS on/off Reception Mode Switching Timer Reception time printing Reduction/Enlargement Remaining memory indicator Remote ID Reverse Order Printing RTI, TTI, CSI Secure ID Service Report Transmission Speaker volume control Specified Cassette Selection Substitute reception on/off Telephone line type Toner Saving Mode TTI on/off User Function Keys User Parameters Wild Cards
O X O X O X X O X X X O X O X A A X A O X X X O O X X X O X A O X X O X O O X O X O O
1-3
OVERALL MACHINE INFORMATION FEATURES Reports - Automatic Charge Control Report Communication Failure Report Confidential File Report Error Report Memory Storage Report Mode Change Report Polling Clear Report Polling Reserve Report Polling Result Report Power Failure Report TCR (Journal) Toner Cassette Order Form Transfer Result Report Transmission Result Report Reports - User-initiated Authorized Reception List Charge Control Report File List Forwarding List Group List Personal Code List Program List Quick Dial List Specified Cassette Selection List Speed Dial List TCR Transmission Status Report User Function List User Parameter List Service Mode Features Auto Paper Select test Back-to-back test Bit switch programming Book mode test Buzzer test Cable equalizer Comm. parameter display Counter check Country code DTMF tone test Echo countermeasure Effective term of service calls Error code display Excessive jam alarm
November 28th, 1995
X O A O O X X O O O O X X O
O X O A O X O O X O O X X O
Service Mode Features File Transfer LCD contrast adjustment Line error mark Memory file printout (substitute reception only) Modem test NCU parameters Operation panel test Periodic service call PM Call Printer mechanism test Printer test patterns Programmable attenuation Protocol dump list RAM display/rewrite RAM dump RAM test Ringer test Scanner lamp test Scanner mechanism test Sensor initialization Serial number Service monitor report Service station number Software upload/download (Available only in machines with the FLASH ROM.) SRAM data download System parameter list Technical data on the TCR Thermal head parameters Transmission Status Report User data transfer
O X O O O O O X X O O X O O O O X O O X O O O O O O O X X O
X O O X O O O O O O O X O X
Memory Files Max. number of files: 100 Max. number of stations/file: 100
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November 28th, 1995
OVERALL MACHINE INFORMATION COMPONENT LAYOUT
1.3. COMPONENT LAYOUT
1.3.1. Mechanical Components 2 1
8
7 3
6
5
4
H505V501.wmf
No.
1 2 3 4 5 6 7 8
Name
TIJ Document Feed Roller Paper Feed Unit Paper Feed Roller Registration Roller Carriage Unit / Ink Cartridge R2 Roller R1 Roller
Description
Thermal ink jet printer unit. This roller feeds the document into the scanner. This unit can hold up to 150 sheets. This roller picks up the top sheet of paper, and feeds it into the printer. This roller carries out the registration process. The carriage unit holds the ink cartridge. The cartridge contains the ink jet printer head and the ink. This roller feeds the document through the scanner. This roller feeds the document through the scanner.
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OVERALL MACHINE INFORMATION COMPONENT LAYOUT
November 28th, 1995
1.3.2. Electrical Components 4 3 2 1 9 19 5 6 7 8
10 18 17 16 15 14 13
H505V502.wmf
11 12
1. PCBs No.
1 2 6 7 9 10 15
Name
FDU (Facsimile Driver Unit) OPU (Operation Panel Unit) IJC (Ink Jet Controller) FCE (Facsimile Control Engine) PSU (Power Supply Unit) NCU (Network Control Unit) Contact Image Sensor Assembly
Description
This board contains drivers for the motors, a dc-dc converter, and the DRAM backup circuit. This board controls the operation panel. This board controls the ink jet printer. This board controls the machine. It contains the main cpu, ROM, system RAM, and other control components. This board supplies power to the machine. This board contains a relay and switches to interface the machine to the network. 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.
1-6
November 28th, 1995
OVERALL MACHINE INFORMATION COMPONENT LAYOUT
2. Motors No.
8 12 18
Name
Tx Motor Carriage Motor Paper Feed Motor
Description
This stepper motor drives the scanner rollers. This motor drives the printer's carriage mechanism. This motor drives the paper feed roller and the registration roller.
3. Sensors No.
3 4 5 11 13 14 16 17 19
Name
Scan Line Sensor Document Sensor Top Cover Sensor Paper Release Lever Sensor Carriage Home Position Sensor Ink End Sensor Paper Feed Roller Sensor Paper End Sensor Front Cover Sensor
Description
This sensor detects when the document approaches the scanning position. This sensor detects the presence of a document in the feeder. This sensor detects whether the top cover is opened or closed. This sensor detects when the paper release lever is released. (The paper release lever is also known as the paper feed lever.) This sensor detects when the carriage is at the home position. This sensor detects when the ink in the cartridge has run out. This sensor detects the initial rotation position of the paper feed roller. This sensor detects the presence of paper in the printer. This sensor detects whether the front cover is opened or closed.
1-7
OVERALL MACHINE INFORMATION OVERALL MACHINE CONTROL
November 28th, 1995
1.4. OVERALL MACHINE CONTROL
Optional RS232C I/F
Optional IC Card
FCE
DRAM
Working RAM ECM/ SAF Memory
System ROM
System RAM (SRAM)
Video SRAM
IJC
MDM
FCIP
DATA/ADDRESS BUS
CPU RU8
DMAC
DCR
DIP
LIF
PRIF
I/F Controller
Centronics Interface
RIDC
ROM
SRAM
NCU
Thermistor
HIC CPU
LED Driver
Speaker
Contact Image Sensor
Print Controller
Cover Sensors Ink End Sensor Operation Panel
EEPROM
DRAM
FDU
Paper Feed Roller Sensor
Paper End Sensor
DRAM
Heater Drivers
Cartridge Type/ Color Detection
Drivers
Driver
DC-DC Converter
PSU
Carriage
Home Position Sensor
Carriage Motor
Paper Feed Motor
Tx Motor
Printer Head
H505V504.wmf
The FCE (Facsimile Control Engine) contains the FCIP (Facsimile Control and Image Processor), DRAM, SRAM, System ROM, and video processing memory. It controls the entire system through the IJC (Ink Jet Controller) and the FDU (Facsimile Driver Unit). There are two cpus in the machine: the main cpu (FCIP) on the FCE and the ink jet control cpu on the IJC. The FCIP consists of the following component blocks: · RU8 CPU - Main CPU · MDM - Modem · DMAC - DMA Controller · PRIF - Printer Interface · DIP - Digital Image Processor · DCR - Data Compression and Reconstruction
1-8
November 28th, 1995
OVERALL MACHINE INFORMATION OVERALL MACHINE CONTROL
The 512 KB DRAM contains the SAF memory, ECM buffer memory, and work area. The SAF memory can be extended by 2 or 4 Mbytes with an IC card. A 512 KB (4 Mbit) ROM is used for the system ROM. For the USA and some Europe models, the software in this ROM can be rewritten from the IC card slot or by RDS (because a Flash ROM is used). The IJC consists of the following components: · CPU - 16-bit CPU with 16-MHz external clock input · Printer Controller - Gate Array · RIDC - Raster Image Data Controller, interface between FCE and IJC · ROM - The inkjet printer control program and the bitmap font data · DRAM - Receive buffer, download buffer, and working area for printing · I/F Controller - Centronics Interface Controller · SRAM - Working area · HIC - Hybrid IC, Tx/Rx Amplifier · Thermistor - Detects the temperature in the printer · LED Driver - LED on/off control · EEPROM - Contains the following data: · Total amount of waste ink · Total number of pages that have passed through the printer mechanism
1-9
OVERALL MACHINE INFORMATION VIDEO DATA PATH
November 28th, 1995
1.5. VIDEO DATA PATH
1.5.1. Transmission
Original
Contact Image Sensor Assembly
Image Sensor
LED Array
IJC
HIC
Video Processing Memory
DIP
FCE
FCIP
DCR MDM Amplifier
DATA/ADDRESS BUS
DRAM
SAF IC Card
Line Buffer/ FIFO Memory
ECM/SAF Memory
HIC
NCU
To the network
H505V505.wmf
Immediate Transmission: Scanned data from the contact image sensor passes to the DIP block in the FCIP. After analog/digital video processing, the DCR block compresses the data for transmission. The compressed data then passes either to the FIFO memory or to the ECM memory, before it is sent to the telephone line through the modem. Memory Transmission: First, the scanned data is stored in the SAF memory after compression in the DCR block. At the time for transmission, the DCR block decompresses the data from the SAF memory, then compresses it again after handshaking with the other terminal is done. The compressed data then passes either to the FIFO memory or to the ECM memory, before it is sent to the telephone line through the modem.
1-10
November 28th, 1995
OVERALL MACHINE INFORMATION VIDEO DATA PATH
1.5.2. Reception
IJC
DCR
RIDC
SRAM
Print Controller
CPU
Print Head Controller
FDU
DRAM
ROM
Carriage
Printer Head
Copy Paper
H505V506.wmf
Data from the line passes to the modem through the NCU and hybrid IC. After the modem demodulates the data, the data (which is compressed) passes to the SAF memory. After the data has been stored in the SAF memory, it passes through either the FIFO or the ECM memory to the DCR block, where the data is decompressed to raster image data. The image data is then passed to the Print Controller for printing, through the RIDC. After the data has been stored in the DRAM (which acts as a print buffer), the data is sent to the printer head through the printer head control block.
1-11
OVERALL MACHINE INFORMATION VIDEO DATA PATH
November 28th, 1995
1.5.3. Copying
Original
HIC
IJC
Contact Image Sensor Assembly Image Sensor LED Array
DIP
DCR
RIDC
SRAM
Carriage
Printer Head
Print Controller
FDU
CPU
Print Head Controller
Copy Paper
DRAM
ROM
H505V507.wmf
Single copy The scanned data is processed in the DIP block. After the data has been stored in the DRAM for printing through the RIDC, the data is sent to the printer head through the Print Controller. Multi-page copy The scanned data passes to the SAF memory after video processing (DIP) and compression (DCR). After a page of data has been stored in the SAF memory, the data passes to the DCR block again for decompression, then it passes to the print controller for printing through the RIDC.
1-12
November 28th, 1995
OVERALL MACHINE INFORMATION VIDEO DATA PATH
1.5.4. Printing from the Centronics Interface
Centronics I/F
I/F Controller
RIDC
Print Controller CPU
Printer Head Controller
FDU
ROM DRAM
Printer Control Program
Carriage
Printer Head
Bit Map Font Data
Copy Paper
H505V508.wmf
The print data passes from the Centronics interface to the print controller through the I/F controller and the RIDC. The print data is stored in the DRAM, which acts as a print buffer. At the same time, font data from the ROM is stored in the DRAM, which also acts as a downloaded font buffer if necessary. After the print data has been stored with the font data in the print buffer, the print data passes through the printer head control block to the print controller for printing.
1-13
OVERALL MACHINE INFORMATION POWER DISTRIBUTION
November 28th, 1995
1.6. POWER DISTRIBUTION
1.6.1. Distribution Diagram
+5V DRAM Backup Circuit +24VM
+5V +5VBAT
FCE
+5VBAT
FDU
+24VM +24VM
BAT
+5V +5V
DC-DC Comverter
+12VP
+5V
DC-DC Converter
-5V
-5V +24VM
PSU
+24VH
IJC
+5V
+5V
Ink End Sensor
+24VH
+5V
Operation Panel
HVH
+5V +24VM +24VM +24VM
+5VCIS
Carriage HVDD
+24VM
NCU
Driver
Drivers (for Stepping Motors)
Contact Image Sensor
Tx Motor
Carriage Motor
Paper Feed Motor
-5V
H505V509.wmf
The PSU supplies +24V dc power to the FDU. The FDU converts the +24V dc power supply to the following supplies.
+5V +5VD +5VBAT +24VM -5V +24VH/ HVH HVDD This is normally on when the main power is supplied. This supplies the DRAM and the optional IC card on the FCE to back up the stored data for one hour. A rechargeable battery on the FDU is used to generate +5VD. This supplies the system RAM on the FCE to back up the programmed data. A lithium battery is used to generate +5VBAT. This is normally on when the power code is plugged in. This is used for the image sensor. This is supplied to the temperature control heater on the printer head. This is supplied to the drive circuit on the printer head.
The FDU supplies + 24V and ±5V dc power to the IJC. The IJC converts the +24V and +5V dc power supplies to the following supplies.
+5VCIS +12VP This is a more stable power supply than +5V. It is used for the Contact Image Sensor. This is supplied to the Flash ROMs on the FCE and the optional IC card.
1-14
November 28th, 1995
OVERALL MACHINE INFORMATION POWER DISTRIBUTION
1.6.2. Memory Back-up Circuit
IJC
[A]
[B]
FDU
H505V510.wmf
The +5VBAT supply from the lithium battery [A] backs up the system RAM which contains system parameters and programmed telephone numbers, and the real time clock in the main cpu. The 5RTCCS signal tells the main cpu whether the back-up power (+5VBAT) is coming from the battery or from the +5V power supply. A rechargeable lithium battery [B] and the dc/dc converter on the FDU back up the DRAM (SAF memory) for one hour. While the main power is on, the +5V supply recharges the battery. The battery recharges in one or two days. The battery [B] generates about 3 volts (max. 3.2 volts). The dc/dc converter (IC12) lifts this voltage to 5 volts so it can be used as the +5VD supply for SAF backup. The CPU monitors the voltage of the +5VD supply with the 1VDET signal. When the battery has run down, and the voltage is lower than 4.4 volts, the CPU stops the dc/dc converter by dropping 1SAFFG to low and the machine stops backing up the memory. There is no battery switch for the battery [B].
1-15
November 28th, 1995
DETAILED SECTION DESCRIPTIONS SCANNER
2. DETAILED SECTION DESCRIPTIONS
2.1. SCANNER
2.1.1. Mechanisms 1. Document Detection, Pick-up and Separation and Drive Mechanism [A] [B] [C] [D] [E]
[G] [F]
H505D501.wmf
A: Document Sensor B: Scan Line Sensor C: Separation Rubber Plate E: Tx Motor
The document sensor [A] detects when a document is placed in the ADF. The tx motor [E] then starts to prefeed the document until the scan line sensor [B] detects it. The separation rubber plate [C] prevents the feed roller [D] from feeding more than one sheet at a time. To feed the document throught the scanner, the Tx motor [E] drives the feed roller, the R1 roller [F], and the R2 roller [G].
2-1
DETAILED SECTION DESCRIPTIONS SCANNER
November 28th, 1995
2.1.2. Image Scanning [A]
[F] [C] [B] [D] [E]
H505D522.wmf
The scanner consists of a shading plate [A] and a contact image sensor (CIS) assembly [B]. Inside the CIS are an exposure glass [C], a rod lens array [D], an image sensor [E], and an LED array [F]. The image sensor consists of a row of 1728 photosensitive elements. Light from the LED array is reflected from the document and focused onto the image sensor by the rod lens array. Because of the short optical path inside the CIS, the focal depth is much shorter than for a CCD type scanner. Because of this, the shading plate pushes the document so that the document surface always touches the exposure glass at the scan line. The image sensor assembly is not adjusted at the factory, so it does not need any adjustment at replacement in the field. The image sensor scans the original one line at a time, and outputs an analog signal for each line. The voltage from each element depends on the intensity of the light reflected from the original onto the element. The machine feeds the document through the scanner using one of the following step widths: the scanned lines are transmitted without any OR processing. 3.85 lines/mm in Standard resolution 7.7 lines/mm in Detail resolution 15.4 lines/mm in Fine resolution
2-2
November 28th, 1995
DETAILED SECTION DESCRIPTIONS SCANNER
Auto Contrast Thresholding This machine determines the contrast thresholds automatically when text mode is used. The machine compares the video data element with the surrounding elements and automatically calculates the threshold level. When this mode is enabled, the contrast threshold setting of scanner bit switch 02 is ignored. This function can be disabled with scanner bit switch 00. Jam Conditions The machine detects a document jam if one of the following conditions occurs.
Jam Condition Non-feed Incorrect sensor condition Description The scan line sensor does not switch on within 3.0 s of the tx motor starting to prefeed the document. The scan line sensor does not turn off after the maximum document length has been fed since it turned on. Error Code 1-00
1-01
2-3
DETAILED SECTION DESCRIPTIONS PRINTER
November 28th, 1995
2.2. PRINTER
2.2.1. Printer Configuration
[C]
[A]
[D]
[B]
H505D512.wmf
Ink Cartridge [A]: The ink cartridge is made up of the printer head and the cartridge body. The machine can use both black and color ink cartridges. The black ink cartridge is a single unit, but the color ink cartridge has separate ink refills (black and color) which can be replaced. Purge Unit [B]: To sustain a high quality printing level, the purge unit maintains the ink nozzles with a cap and wiper. The purge unit protects the nozzles with the cap when the printer is not in use. Carriage [C]: The carriage unit, driven by the carriage motor [D], moves horizontally across the print paper. The print signals are transmitted to the ink cartridge by the carriage ribbon cable. When the carriage unit is at home position, paper feed motor drive can be transferred to the purge unit or the paper feed roller (see "Paper Feed - Drive Mechanism" for details).
2-4
November 28th, 1995
DETAILED SECTION DESCRIPTIONS PRINTER
2.2.2. Ink Cartridge (Black and Color)
[A]
[H] [I] [F] [J] Black Ink Cartridge
H505D506.wmf
[H]
[D]
[C]
[G]
[I] [J]
[E]
[B]
Color Ink Cartridge
H505D507.wmf
The black ink cartridge contains only the black ink sponge [A] while the color cartridge contains ink sponges for black [B], yellow [C], magenta [D], and cyan [E]. The black printer head face plate [F] contains a row of 128 nozzles and the color printer head face plate [G] contains 136 nozzles. Ink passes to these nozzles through an ink duct section [H]. Printing signals are sent to the printer head from the signal connection point [I].
2-5
DETAILED SECTION DESCRIPTIONS PRINTER
November 28th, 1995
2.2.3. Printer Head 1. Mechanism
[C]
[D] [E] [A]
[F]
[B]
H505D508.wmf
Ink from the sponge is filtered at [A] to remove dust, and then passes to the nozzles through pipe [B]. When the head drive current flows through a nozzle's heater plate [C], the ink at the plate boils. The bubbles formed [D] eventually join into one large bubble [E]. The bubble forces a drop of ink [F] out of the nozzle. Head drive current stops before the bubble is fully formed. The remaining heat of the heat plate completes the bubble. The plate cools by the time the ink drop is ejected, and fresh ink enters the nozzle from the sponge. The nozzles are arranged in a straight line at intervals of 1/360 inch. There are 128 nozzles in the black ink cartridge. The color ink cartridge has a total of 136 nozzles: 24 yellow nozzles, 24 magenta nozzles, 24 cyan nozzles, and 64 black nozzles.
Nozzle 1 Nozzle 1
Yellow 1~24 Magenta 25~48 Cyan 49~72 Black 73~136
Nozzle 128
Nozzle 136
Black Ink Cartridge
Color Ink Cartridge
H505D509.wmf
2-6
November 28th, 1995
DETAILED SECTION DESCRIPTIONS PRINTER
2. Drive Circuitry
HTO HVH HTI RANK VHG WH-T <0> <1>
Temperature Control Heater x 2 Rank Resistor Sub-heater x 2
H ENB
Odd ENB Even ENB
B ENB <1>
<2>
<0>
Heater 1 1 2
38 Decoder
8
1 16
Delay
HDATA
128/136 Bit Shift Register
128/ 136 /
128/136 Bit Latch
113 114
128/136 Bit Tr. Array Delay
128/ 136
HCLOCK HRES HLATCH HVdd HVss DIODE A Head Temperature Sensor Heater 128/136
*
ID0 ID1
DIODE K ID0 ID1
H505D504.wmf
128/136 Bit Shift Register: This register stores the print data (HDATA) sent from the FCE with the HCLOCK timing signal. 128/136 Bit Latch: This latch stores the print data (HDATA) sent from the 128/136 bit shift register with the HLATCH timing signal. 38 Converter: This converts the three BENB (block enable) signals (<0>, <1>, and <2>) into the 8-division timing signals for all heaters. Heaters 1-128/1-136: These heaters heat the nozzles. They are turned on by a combination of OddENB or EvenENB, HENB (heat enable), the timing signals from the 38 converter, and the data signal (HDATA) from the latch. Sub-heater: This heater keeps the ink in the nozzles warm. Temperature Control Heater: This heater stabilizes the amount of ink injected. Heat Temperature Sensor: This sensor uses a diode to detect the temperature variation caused by the flow of ink at the nozzles. Cartridge ID: The cartridge type (color or black) is detected with the ID0 and ID1 signals.
*These ID signals identify a color cartridge.
The main illustration's ID signals identify a black cartridge.
2-7
DETAILED SECTION DESCRIPTIONS PRINTER
November 28th, 1995
3. Print Signals
HQ Smoothing HS 160s (6.25kHz) 128s (7.81kHz) 112s (8.93kHz)
HLATCH
128 OR 136
HDATA HCLOCK Odd ENB Even ENB B ENB 0 B ENB1 B ENB 2 H ENB 0,1,2 H ENB 3
1 BLOCK
Data transmission to shift register
Head Driving in HQ Mode (Divided into 16)
Odd ENB Even ENB B ENB 0 B ENB 1 B ENB 2 H ENB 0,1,2 H ENB 3
1 BLOCK Variable Pulse Width
Head Driving in HS Mode (Divided into 8)
Pre-Pulse Main Pulse
H505D510.wmf
The 38 converter changes the three signals, BENB 0, 1, and 2, into 8 signals, dividing the nozzles into 8 blocks. For HQ print mode, these blocks are then further divided with the OddENB and EvenENB signals into 16 nozzle groups. The HENB signals make up the pre-pulses (which raise the temperature of the printer head to a suitable temperature), and the main pulses (which cause the ink to be ejected). These signals are input with the print data signals for each nozzle into the AND circuits (see the diagram on the previous page). The resulting signal drives the heaters.
2-8
November 28th, 1995
DETAILED SECTION DESCRIPTIONS PRINTER
2.2.4. Purge Unit 1. Components
[E]
[A] [C] [D] [B]
H505D511.wmf
Purge Unit Drive Gear [A]: The paper feed motor drives this gear during cleaning. The gear functions as a cam to control the ink pump inside the purge unit. Wiper Unit [B]: The wiper unit wipes the ink from the ink cartridge face plate during cleaning. Cap Unit [C]: The cap unit caps the print head face plate (nozzles) when the nozzles move to the capping position (this is when the carriage is at home position). The cap unit is also connected to the ink pump. It extracts ink from the ink cartridge during cleaning operations. The waste ink is drained down into the waste ink absorbers in the bottom of the unit. Maintenance Jet Receiving Section [D]: This section receives ink ejected from the nozzles into the purge unit to prevent clogging. The gear feeds the waste ink to the waste ink absorbers in the bottom of the unit. Slide Pin [E]: The slide pin causes the cap unit [C] to cap the nozzles when the cartridge moves into the capping position. This unlocks the drive transfer mechanism inside the purge unit, allowing the paper feed motor drive to be transferred either to the purge unit drive gear [A] or to the paper feed unit (see section 2-2-5).
2-9
DETAILED SECTION DESCRIPTIONS PRINTER
November 28th, 1995
2. Purge Unit Functions Capping The capping function prevents drying of the nozzle and ink leakage. The cap is automatically over the nozzles when the carriage is at home position. Cleaning The cleaning function consists of two operations. 1. Wiping: The wiper unit wipes the face plate to remove paper fiber and ink. 2. Pumping: The ink pump in the purge unit sucks old ink from the capped cartridge and fills the nozzles with fresh ink. To initiate cleaning, the paper feed motor rotates in reverse. This causes the purge unit drive gear to rotate, which drives the cleaning mechanisms in the purge unit. The cleaning operations are executed when any one of the following conditions occur: · The power cord is connected. · The ink cartridge is replaced. · The number of print dots has reached a specified value. · The front or the top cover has been opened and then closed. · The paper feed lever has been released and then closed. · Cleaning operation has been executed by the customer. · The power is switched on or print data is received after more than 72 hours have passed since the last cleaning. · Every 60 seconds during printing. · At the start of each new page. · When the cap unit is opened or closed. Ink removed from the cartridge goes to the ink absorbers below the TIJ unit. The machine estimates the amount of ink that has gone to the absorbers, and stores the value in EEPROM. When the value reaches a certain threshold, "UNABLE TO PRINT" is displayed. The ink absorbers must be replaced, and the EEPROM must be reset (see section 4-1-17 for how to reset the EEPROM data).
2-10
November 28th, 1995
DETAILED SECTION DESCRIPTIONS PRINTER
2.2.5. Paper Feed 1. Overview [D] [A]
[B] [C]
H505D513.wmf
The paper feed roller [A] picks up the top sheet of paper from the paper feed unit [B] and feeds it into the printer. The paper feed roller sensor [C] checks whether the feed roller is at the starting position before printing. The paper end sensor [D] detects the presence of paper in the printer.
2-11
DETAILED SECTION DESCRIPTIONS PRINTER
November 28th, 1995
2. Drive Mechanism [G]
[E] [F]
H505D502.wmf
[H]
When the carriage is at the home position (this is also the capping position), the drive transfer mechanism in the purge unit is unlocked (see section 2-24), and drive from the paper feed motor is transferred either to the paper feed or to the purge unit, depending on the direction that the paper feed motor is rotating. For paper feed, the paper feed motor [E] turns the registration roller [F] in the paper feed direction. This causes the drive transfer mechanism in the purge unit to move the drive transfer gear [H] into contact with the paper feed mechanism, and the paper feed gears and paper feed roller [G] rotate as shown in the diagram. For cleaning (see section 2-2-4), the paper feed motor reverses. The registration roller turns in the reverse direction, and this moves the drive transfer gear [H] into contact with the purge drive gear in the purge unit (not shown here). The paper feed motor then drives the cleaning operation. When the carriage is not at the home position, the drive transfer mechanism is locked. As a result, the paper feed roller does not move when the carriage is away from home position during printing. The paper is fed by the registration roller only.
2-12
November 28th, 1995
DETAILED SECTION DESCRIPTIONS PRINTER
2.2.6. Ink End Detection To determine whether ink is present in the cartridge, the machine prints a black dot (known as the ink end mark) after printing the last line on a page. The ink end sensor reads the white level around the mark, and then it looks for the ink end mark itself. If the sensor can detect the mark, the machine determines that ink is present. If it cannot detect the mark, the machine determines that the cartridge is empty. "Replace Cartridge" is indicated on the LCD and the machine stops printing. The machine keeps the received fax message data stored in the SAF memory until the ink cartridge is replaced. The machine checks for ink end at the following times. · When printing an incoming fax message · When printing a test pattern from 0 to 4 with service function 11 · When printing a report (except when printing EEPROM information with service function 11) · When the ink end sensor is initialized with service function 11 Ink end detection can be disabled with a user parameter 12 setting.
IJC
+5Vcc
Ink End Sensor
INKEND 1
INKSEL1 2 3 INKSEL0 TR1
TR2
H505D524.wmf
2-13
DETAILED SECTION DESCRIPTIONS PRINTER
November 28th, 1995
Ink End Sensor The ink end sensor is a photosensor that uses red light. The machine adjusts the amount of current to the photosensor automatically to correct for the manufacturer's sensor type. The current is determined by the output level the sensor reads during the white level scan on the paper when detecting the ink end mark. The machine also determines the threshold value for detecting ink end based the determined current value. 2.2.7. Maximum Print Lengths The maximum print length depends on the vertical reduction ratio setting of user function 62. It also differs for printing incoming fax messages and reports, and when in in copy mode. This is to ensure that there is enough space to print the ink end mark on incoming messages and reports. (Ink end detection is not done in copy mode or when printing from a PC.) The following table shows the maximum print lengths in various modes. All lengths are in millimeters. Copy Mode
Vertical Reduction Ratio 100% 94% Maximum Print Length Letter 268.8 285.9
A4 286.4 304.6
Legal 345.0 367.0
Printing Fax Messages and Reports
Maximum Print Length Letter 256.8
A4 275.5
Legal 333.6
Any messages longer that the maximum will be printed on two sheets of paper, without reduction. If the vertical reduction ratio is set to AUTO, page separation and data reduction comes into effect (see section 2-2-8).
2-14
November 28th, 1995
DETAILED SECTION DESCRIPTIONS PRINTER
2.2.8. Data Reduction and Page Separation If the vertical reduction ratio is set to AUTO with user function 62, incoming data can be reduced to fit on one output page. Data will only be reduced if the length of the incoming page does not exceed a certain maximum length. This length depends on the reduction ratio set with user function 62 (the other choice visible on the display besides AUTO; this is either 94% or 100%), the print paper size, and the reduction ratio set with printer bit switches 04 and 05. Each paper size can be programmed with a separate reduction ratio. In each of the two bit switches, there is one bit for each possible paper size. The combination of the bit settings determines the ratio for that paper size.
Bit No. Bit 7 Not used 0: 3/2 0: Bit 6 Not used Bit 5 Legal 1: 4/3 0: Bit 4 Not used Bit 3 A4 0: 8/7 1: Bit 2 Letter Bit 1 Not used 1: 12/11 1: Bit 0 Not used
Sw 04 Sw 05
The following table shows the maximum incoming page length that can be reduced for each print paper size. All lengths are in millimeters. The factory setting of the reduction ratio is 4/3. Europe/Asia Model
Copy Paper Type A4 Reduction Ratio 94% 100% Maximum reducible incoming page length. Ratio = 3/2 Ratio = 4/3 Ratio = 8/7 Ratio =12/11 439 390 334 319 412 367 314 300
USA Model
Copy Paper Type Letter Legal Letter Legal Reduction Ratio 94% 100% Maximum reducible incoming page length. Ratio = 3/2 Ratio = 4/3 Ratio = 8/7 Ratio =12/11 410 365 312 298 532 473 406 387 386 343 294 280 501 445 381 364
Incoming pages that are longer than the maximum length will not be reduced, but will be printed on two pages.
2-15
DETAILED SECTION DESCRIPTIONS PCBs
November 28th, 1995
2.3. PCBs
2.3.1. FCE
FCE
+5V
Syetem ROM (512kB)
DRAM (512kB)
Video SRAM (8kB)
SRAM (32kB)
+5V
+5VBAT
DATA/ADDRESS BUS
IC6
SW1
Battery
29.952MHz
FCIP
32.768kHz
Parallel IO
Memory Card (Optional) RS232C Interface (Optional)
FDU
Serial IO
H505D519.wmf
1. FCIP (Facsimile Controller and Image Processor)
· · · · · · · · · · ·
CPU Modem (V.29, V.27, V.21) Data compression and reconstruction (DCR) Digital image processor (DIP) DMA controller Clock generation Tx motor control Serial interface to the FDU DRAM backup control Tone detection Ink end detection
2. ROM
·
512 kB (4 Mbit) ROM for system software storage
2-16
November 28th, 1995
DETAILED SECTION DESCRIPTIONS PCBs
3. DRAM
·
512 kB DRAM shared between the Line Buffer (32 kB), ECM Buffer (128 kB), and SAF memory (352 kB) · Backed up by the battery on the FDU 4. SRAM
· ·
32 kB SRAM for system and user parameter storage Backed up by the battery on the FCE
5. Video SRAM
·
8 kB SRAM for video processing
6. Oscillators
· ·
29.952 MHz oscillator for system clock generation 32.768 MHz oscillator for the real time clock. This is backed up by the battery on the FCE.
7. Jumpers, Switches, and Test Points
Item SW1 Description Switches the backup battery ON/OFF
2-17
DETAILED SECTION DESCRIPTIONS PCBs
November 28th, 1995
2.3.2. FDU
IJC FDU
Driver Tx Motor
Drivers Paper Feed Roller Sensor
Paper Feed Motor Carriage Motor
TIJ
CPU
Paper End Sensor Carriage Drive Circuit
Carriage
Heater Driver Printer Controller +5V -5V
Paper Head
DC/DC Converter
FCE
FCIP +5V DRAM Back-up Circuit +24V
PSU
DRAM
H505D516.wmf
1. Printer Head Drive Circuit
· · · · ·
Heater driver Head rank detection Head temperature detection Home position detection Cartridge type detection
2. Drivers
· · ·
Carriage motor driver Paper feed motor driver Tx motor driver
3. Sensors
· ·
Paper end sensor Paper feed roller sensor
2-18
November 28th, 1995
DETAILED SECTION DESCRIPTIONS PCBs
4. DC/DC Converter
· ·
+5V generation -5V generation
5. Battery
·
Back-up for the DRAM on the FCE
6. Jumpers, Switches, and Test Points
Item JP1 Not used Description
2-19
DETAILED SECTION DESCRIPTIONS PCBs
November 28th, 1995
2.3.3. IJC
Centronics Interface RIDC Ink End Sensor EEPROM
IJC
SRAM
Top Cover Sensor Front Cover Sensor Paper Release Lever Sensor
FDU Printer Controller FCE ROM CPU
DRAM OPU HIC LED Driver
NCU
Contact Image Sensor Speaker
H505D517.wmf
1. CPU (MPU)
· · · · ·
Printer head control Carriage motor control Paper feed motor control Centronics interface control Data converter for the character font code
2. Printer controller
· ·
Printer head drive control Centronics interface control
3. ROM
·
8 bit masked ROM for the TIJ (thermal ink jet) control program and bit map font data storage
4. DRAM
·
1 MB DRAM for working area, receive data buffer, and font download buffer
2-20
November 28th, 1995
DETAILED SECTION DESCRIPTIONS PCBs
5. Oscillators
· ·
16 MHz oscillator for MPU control clock generation (OSC1) 22.11 MHz oscillator for printer control clock generation (OSC2)
6. Raster Image Data Controller (RIDC2)
· ·
Raster image data converter Interface between FCE and TIJ controller
7. SRAM
·
64 kB SRAM for the RIDC working area
8. HIC (Hybrid IC)
· ·
Filter and amplifier Monitor speaker driver
9. EEPROM
·
1 kB electrically erasable and programmable ROM for storing data on the total waste ink amount and the total number of pages that have passed through the TIJ
10. Centronics Interface 11. Jumpers, Switches, and Test Points
Item JP1 JP2 TP1 TP2 TP3 TP4 TP5 TB1 Description Not used Not used Received signal output from the modem COM1 Analog video signal input from the Contact Image Sensor Synchronization signal Scanner clock Not used
2-21
DETAILED SECTION DESCRIPTIONS PCBs
November 28th, 1995
2.3.4. PSU
ACL AC Input ACN Surge Protection Surge Protection
+24V
GND
PSU
Switching Circuit
COM3
H505D518
·
+24Vdc generation
2-22
November 28th, 1995
DETAILED SECTION DESCRIPTIONS PCBs
2.3.5. NCU (USA)
JP5 TIP RING Current Sensor
24 V OHDISW
TRXD
JP6
OHDISW
NCU
Hook0 Hook1 ExRing
T1
Ring Detect
R1
24V RI TONE
T1 R1
Relay Ext. Tel DP/Off-Hook Detection
ExDI
OML SW
H505D520.wmf
1. Jumpers
Item JP5 JP6 Description These jumpers should be shorted when the machine is connected to a dry line.
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DETAILED SECTION DESCRIPTIONS PCBs
November 28th, 1995
2.3.6. NCU (Europe/Asia)
RI TONE SHUNT T1 TIP RING R1 GS OHDI Sw. JP24 DOSW OHDISW GS Sw. CMLSW Hook0 SHUNT T1 TIP RING R1 GS CN5 CN7 Ring Detection Circuit Hook1 GSSW CSEL0 CSEL1 RSEL ExRing Current Sensor
CML Relay Filter (16Hz) DO Sw. TRXD Loop Closure Circuit
H505D521.wmf
1. Control Signals and Jumpers
Country Germany Holland Austria Italy Spain Ireland Finland Switzerland Other CSEL0 CN2-4 L L L H L H L L L CSEL1 CN2-5 H L L L L L L H H RSEL CN1-13 H H L H L H H H L JP24 S S S S S S O O S CN5 O O O O O S O O O CN7 O O O O O S O O O
L: Low, H: High
S: Short, O: Open
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November 28th, 1995
INSTALLATION INSTALLING THE MACHINE
3. INSTALLATION
3.1. INSTALLING THE MACHINE
Refer to the Operator's Manual for the installation environment and how to install and set up the machine. Refer to section 2.3.6. for how to set up the NCU hardware in each country.
3.2. INITIAL PROGRAMMING
Items to Program (Service Level) Country code (NCU parameter 00) Country code (System bit switch 0F) Protocol requirements (G3 bit switch 0B) PABX access code (RAM address 8000BB) Machine's serial number Items to Program (User Administrator Level) Clock Initial programming items (IDs) On/off switches Display/report language PABX access method (User parameter switch 13 - bits 0, 1) Function No. Function 08 Function 01 Function 01 Function 06 Function 14 Function No. Function 81 Function 61 Function 62 Function 83 Function 63
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November 28th, 1995
SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
4. SERVICE TABLES AND PROCEDURES
4.1. SERVICE LEVEL FUNCTIONS
In this section frequently used keys are referred to with the following symbols. - Start key - Stop key - Function key - Yes key - No key - Up arrow key - Down arrow key - Right arrow key - Left arrow key
S s FU Y N ^ _ > <
4.1.1. Bit Switch Programming (Function 01) 1. FU 6 1 9 9 5 then immediately Y 2. 0 1 Y Bit 7 is displayed at the left, and bit 0 at the right. 3. Scroll through the bit switch menu: * or Example: To see the communication switches : # × 3 Then scroll through the bit switches. Decrement bit switch: < Increment bit switch: >
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
SYS DF : BITSW 00:
0000 0000 0000 0000
#
COM DF : BITSW 00:
0000 0000 0000 0000
Example: Display bit switch 3: > x 3 4. Adjust the bit switch. Example: To change the value of bit 7, press 7
COM DF : BITSW 03: 0000 0000 1000 0000
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
November 28th, 1995
5. To adjust more bit switches - go to step 3. To finish: FU
4.1.2. System Parameter List (Function 02)
1.
FU 6 1 9 9 5 then immediately Y 02YS
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
2.
3. Finish: FU
4.1.3. Error Code Display (Function 03) 1. FU 6 1 9 9 5 , then immediately Y
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
2.
03Y
Scroll through the error codes - > or < Finish -
ERROR CODE < > 1-01 JAN 01 17:30
3. Either:
FU
4.1.4. Service Monitor Report (Function 04) 1. FU 6 1 9 9 5 then immediately Y 2. 0 4 Y S 3. Finish: FU
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
4.1.5. Protocol Dump (Function 05) 1. FU 6 1 9 9 5 then immediately Y 2. 0 5 Y 3. S 4. Finish: FU
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
START PROTOCOL DUMP
4.1.6. RAM Display/Rewrite (Function 06) 1. FU 6 1 9 9 5 then immediately Y 2. 0 6 Y 3. 0 4. Input the address that you wish to see. Example: Address 800020 Note: If you wish to move the cursor, press
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-MEM.R/W 1-MEM.DUMP
ADDRESS = 000000 DATA = 00
ADDRESS = 800020 DATA = 20
800020
>.
ADDRESS = 800020 DATA = 80
5. If you wish to change the data, type in the new data. Example: 80, press 8 0 Note: If you wish to move the cursor, press
>.
6. Either: · View more addresses - go to step 4.
·
Finish - FU
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
November 28th, 1995
4.1.7. RAM Dump (Function 06) 1. FU 6 1 9 9 5 then immediately Y 2. 0 6 Y 3. 1 4. Enter the first four digits of the start and end addresses . For example, enter "8000" for start address 800000(H), and enter 8001 for end address 8001FF(H). Then, press "Start" to print the dump list. Example: Start at 800000, end at 8001FF.
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-MEM.R/W 1-MEM.DUMP
MEMORY DUMP START/N ADD.000000 - 0000FF
MEMORY DUMP START/N ADD. 800000- 8001FF
MEMORY DUMP
80008001S . FU
5. Finish:
4.1.8. Counter Display/Rewrite (Function 07) 1. FU 6 1 9 9 5 then immediately Y 2. 0 7 Y 3. Press 0. The transmitted and received page counters are displayed.
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-COUNTER
TX: RX:
012345 012345
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
4. To change the contents of a counter, input the new value, then press Y . 5. To finish: FU
4.1.9. NCU Parameters (Function 08) 1. FU 6 1 9 9 5 then immediately Y
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
2. 0 8 Y 3. 0 4. Scroll through the parameters using
0-NCU 2-DTMF 1-MODEM 3-DETECT
NCU NO.04 = 005
KPAD/<>
> or < . If you want to change a
then press Y . Example: Set NCU parameter 04 to 005.
value, enter the new value at the keypad,
>>>> 0 0 5 Y
5. To finish : N FU. Note: Parameter CC is the Country Code, Parameter 01 is the Tx level. Refer to section 4.3 for full details on NCU parameters. 4.1.10. Modem Test (Function 08) 1. FU 6 1 9 9 5 then immediately Y 2. 0 8 Y 3. 1
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-NCU 2-DTMF
1-MODEM 3-DETECT
MODEM TEST START/< 800Hz
>
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
November 28th, 1995
4. Scroll through the available tests using 5. S 6. To stop the test: s 7. To finish: N FU
> or < .
4.1.11. DTMF Tone Test (Function 08) 1. FU 6 1 9 9 5 then immediately Y 2. 0 8 Y 3. 2 4. Scroll through the available tests using 5. S 6. To stop the test: s 7. To finish: N FU
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-NCU 2-DTMF
1-MODEM 3-DETECT
DTMF TEST TONE 0
START/<>
> or < .
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
4.1.12. Modem Detection Test (Function 08) Note: This function can be used only when G3 bit switch 0B bit5 (French PTT requirements) is 1 in European models. It cannot be used in USA models. 1. FU 6 1 9 9 5 then immediately Y 2. 0 8 Y 3. 3 4. Scroll through the available tests using 5. S 6. To stop the test: s 7. To finish: N FU 4.1.13. Operation Panel Test (Function 09) 1. FU 6 1 9 9 5 then immediately Y 2. 0 9 Y 3. 0 4. S 5. To stop the test, press s . 6. To finish: N FU
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-NCU 2-DTMF
1-MODEM 3-DETECT
MODEM DET START/<> V21 300BPS
> or <
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-LED/LCD
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
November 28th, 1995
4.1.14. LED Array Test (Function 10) 1. FU 6 1 9 9 5 then immediately Y 2. 1 0 Y 3. 0 4. S 5. To stop the test, press s . 6. To finish: N FU
START LAMP 000
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-LAMP
1-ADF
4.1.15. ADF Test (Function 10) 1. FU 6 1 9 9 5 then immediately Y 2. 1 0 Y 3. 1 4. Place a document in the feeder, then press
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-LAMP
1-ADF
START ADF
S.
5. To stop the test, press s . 6. Finish: N FU
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
4.1.16. Printer Test Patterns (Function 11) 1. FU 6 1 9 9 5 then immediately Y 2. 1 1 Y 3. 0 5. Press a key from 0 to 9, or #.
No. 0 1 2 3 4 5 6 7 Test Pattern Type Vertical black stripes 2 x 2 dot pattern Mixed pattern 1 Solid black pattern Mixed pattern 2 Letter for demonstration "H"-pattern " | " pattern Auto sheet feeder test Remarks
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-PATTERN 2-SENSOR
1-CARRIAGE
PATTERN PRINT 0-9,#
KPAD
The machine prints the test pattern until paper end is detected. The machine feeds the paper until paper end is detected. A serial number is printed on each page to indicate the feed sequence. Refer to the next section for details.
8
9 #
EEPROM initialize EEPROM information shet
6. Press S . The selected test pattern is printed. 7. To finish: N FU.
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
November 28th, 1995
4.1.17. Printing the EEPROM Information Sheet and Initializing the EEPROM (Function 11) Note: This procedure can be done only when a black ink cartridge is installed. The machine calculates the amount of ink ejected to the ink absorbers and stores it in the EEPROM on the IJC board. If the amount of ink reaches a certain threshold, the printer stops printing until the ink absorbers are replaced and the counters in the EEPROM are reset. To check the current amount of ink in the ink absorbers, print test pattern no. # (EEPROM information sheet) as shown below. 1. FU 6 1 9 9 5 then immediately Y 2. 1 1 Y 3. 0
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-PATTERN 2-SENSOR
1-CARRIAGE
PATTERN PRINT 0-9,#
KPAD
4. Press #. The machine prints EEPROM information sheet. The format of the sheet is give below.
ROM Ver 1.07
Dipsw1~13 1010001000100 Calculated amount of ink received to the ink absorbers in percentage Paper feed counter when using a black cartridge Paper feed counter when using a colour cartridge
XX.X BBBBBB CCCCCC
H505M502.wmf
To reset the counters in the EEPROM, select test pattern no. 9 (Initializing the EEPROM) with function 11 as shown below. 1. FU 6 1 9 9 5 then immediately Y
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
2. 1 1 Y 3. 0
0-PATTERN 2-SENSOR
1-CARRIAGE
PATTERN PRINT 0-9,#
KPAD
4. Press 9. The machine first resets the counters in the EEPROM, then it prints the EEPROM information sheet. The format of the sheet is the same as shown on the previous page.
4.1.18. Printer Mechanism Test - Free Run (Function 11) 1. FU 6 1 9 9 5 then immediately Y 2. 1 1 Y 3. 1 4. S 5. To stop the test, press s. 6. To finish: N
FUNCTION KPAD/NEXT 9 SERVICE FUNCTIONS
0-PATTERN 2-SENSOR
1-CARRIAGE
START CARRIAGE TEST
FU
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
November 28th, 1995
4.1.19. Ink End Sensor Initialization (Function 11) 1. FU 6 1 9 9 5 then immediately Y 2. 1 1 Y 3. 2
FUNCTION KPAD/NEXT 9 SERVICE FUNCTIONS
0-PATTERN 2-SENSOR
1-CARRIAGE
START SET SENSOR
4. S The machine prints a test pattern and initializes the sensor parameters. 6. After the machine finishes initialization: N
FU
7. Print the system parameter list (function 02). Note: Place a clean sheet of white paper in the paper feed unit when doing this procedure. 4.1.20. RAM Tests (Function 12) 1. FU 6 1 9 9 5 then immediately Y 2. 1 2 Y 3. Either: Test the SRAM: Test the SAF: Test the SAF card: Press 1 S Press 2 S Press 0 S
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-SRAM 2-SAFCARD
1-SAF 3-M-->R
If test is successful, the display shows "OK". If test is unsuccessful, the display shows "ADDRESS=". 4. To finish: N
FU
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
4.1.21. Software Download (Function 12) Note: This function is only avalable with machines that have FLASH ROM. Instead of replacing an EPROM to update the machine's software (as in older models), you may use this procedure to update the software in the machine's Flash ROM. This function copies software from an external medium to the Flash ROM on the machine's FCE. The external medium for the new software can be an FCE or an EPROM board.
[C]
[B]
[A]
[D]
H505M503.wmf
1. Turn off the machine. 2. Insert the Flash/SRAM Copy Tool [A] into the IC card slot [B], then connect the FCE or EPROM board with new software [C] to the opposite side of the tool. Note: The switch [D] on the tool [A] must be at the ON position.
3. Turn on the machine. 4. FU 6 1 9 9 5 then immediately Y 5. 1 2 Y > 6. 4
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-SRAM 2-SAFCARD
1-SAF 3-M-->R
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
November 28th, 1995
7. S If the software is successfully downloaded, the display shows "OK".
OK!! COPY MACH <- FLROM
If the software download fails, the display shows "NG".
NG!! COPY MACH <- FLROM
8. To finish, press FU. 9. Turn off the machine, then turn it back on. 10. Print out the system parameter list and check the ROM version.
4.1.22. Software Upload (Function 12) Note: This function is only avalable with machines that have FLASH ROM. This function copies the software from the machine's built-in FCE to an external FCE. 1. Turn off the machine. 2. Connect the Flash/SRAM Copy Tool and an FCE as shown in the previous section. Note: The switch [D] on the tool must be at the OFF position. 3. Turn on the machine. 4. FU 6 1 9 9 5 then immediately Y 5. 1 2 Y 6. 3 S If the software is successfully uploaded, the display shows "OK". If the software upload fails, the display shows "NG". 7. Finish : FU 8. Turn off the machine, and turn it on again.
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FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-SRAM 2-SAFCARD
1-SAF 3-M-->R
OK!! COPY
MACH -> FLROM
NG!! COPY
MACH -> FLROM
November 28th, 1995
SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
4.1.23. SRAM Data Download (Function 12) This function copies all the data stored in the SRAM on an external FCE to the machine's FCE. Use this after replacing a damaged FCE to save any previous settings that were programmed in the damaged FCE. 1. Turn off the machine. 2. Connect the Flash/SRAM Copy Tool [A] and the damaged FC