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FX7 RICOH FAX1700L SERVICE MANUAL
July 30th, 1996 Subject to change
FX7 infotec 3671/3671F SERVICE MANUAL
July 30th, 1996 Subject to change
IWARNING
THIS MACHINE CONTAINS A LASER BEAM GENERATOR. LASER BEAMS CAN CAUSE PERMANENT EYE DAMAGE. DO NOT OPEN THE LASER UNIT OR LOOK ALONG THE LASER BEAM PATH WHILE THE MAIN POWER IS ON.
Lithium Batteries (Memory Back-up)
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.
July 24th, 1996
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 - 355.6 mm [4.1 - 14 ins] (automatic feed) Up to 600 mm [23.6 ins] (manually assisted) Width: 148 - 216 mm [5.8 - 8.5 ins] Thickness: 0.05 to 0.2 mm [2 to 8 mils] (equivalent to 50 - 90 g/m2) Document Feed Automatic feed, face up ADF Capacity 30 sheets (using 20 lb. or 80 g/m2 paper) Scanning Method Contact image sensor Maximum Scan Width 204 mm [8.0 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 [392 lpi] Memory Capacity ECM: 128 kbytes SAF: 240 kbytes (18 pages/ITU-T #1 test document), extra 1 Mbyte memory card available (102 pages) or 2 Mbyte memory card available (186 pages) Compression MH, MR, EFC, MMR, SSC Protocol Group 3 with ECM Modulation V.17 (TCM), V.29 (QAM), V.27ter (PHM), V.21 (FM) Data Rate (bps) 14400/12000/9600/7200/4800/2400 Automatic fallback 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 Tray: 150 sheets (using 20 lb. or 80 g/m2 paper) A4, Letter, Legal, F4 Paper Feed Unit (Optional): 250 sheets (using 20 lb. or 80 g/m2 paper) A4, Letter, Legal Maximum Printing Width 216 mm [8.5 ins] Print Resolutions Fax and Copy Mode: Main scan: 16 dots per mm [406 dpi] Sub scan: 15.4 lines/mm [391 lpi] Power Supply USA: (110 - 120 Vac) ± 10%, 60 ± 3 Hz Europe/Asia: (220 - 240 Vac) ± 10%, 50/60 ± 3 Hz Power Consumption (Base Machine Only) USA: Maximum 390 W Europe/Asia: Maximum 470 W Operating Environment Temperature: 15 - 25 °C [59 - 77 °F] Humidity: 35 - 70 %Rh Dimensions (W x D x H) 380 x 341 x 219 mm [15.0 x 13.4 x 8.6 ins] Excluding handset, trays, and optional units Weight Approx. 7 kg [15 lb.] Excluding consumables, handset, trays, and optional units
1-1
OVERALL MACHINE INFORMATION FEATURES
July 24th, 1996
1.2. FEATURES
KEY: O = Used, X = Not Used, A = With optional memory only, B = With optional paper feed unit only C = With optional handset only Equipment ADF Book scan Built-in handset Bypass feed: 1 sheet Optional paper feed unit Cabinet Mechanical Counter Cutter Handset Hard disk Manual feed mechanism Marker (Stamp) Monitor speaker Optional printer interface (RS422) Video Processing Features Contrast Halftone (Basic & Error Diffusion) MTF Enlarge/Reduction: Three enlargements, 4 reductions (50%200%) Resolution Smoothing to 16 x 15.4 l/mm
O X X X B X X X C X X X O X
O O O X O O
Communication Features - Auto Automatic fallback O Automatic redialing O Confidential reception X Dual Access O Substitute reception O Communication Features User Selectable Action as a transfer broadcaster AI Redial Answering machine interface Authorized Reception
X X O O
Communication Features User Selectable Auto-answer delay time Auto dialing (pulse or DTMF) Auto Document 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 (Fax, Tel, Auto) Length Reduction Remote control features Remote Transfer Restricted Access Secured Polling
O O X X X X O O O X O X O X X X O O X X O O O X O X X X O X O X X O X O O O O X X X O
1-2
July 24th, 1996
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
O X O X X O X X O X X X X X X
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 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 O O X X O O O X O O O X X X
X Service X X O O O
Other User Features Confidential ID X Copy editing (Erase Center/MarX gin) 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 X ID Code X Label Insertion X Language Selection O LCD contrast control Service Memory Lock X Memory Lock ID X Modifying a memory file X Multi Sort Document Reception X Multicopy mode O Own telephone number O Power Saver (Night Timer and O standby mode) Print density control O Printing a memory file O RDS on/off O Reception Mode Switching Timer X Reception time printing X Reduction/Enlargement X Remaining memory indicator O Remote ID X Reverse Order Printing X RTI, TTI, CSI O Secure ID X Service Report Transmission O Speaker volume control O Specified Cassette Selection X 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
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OVERALL MACHINE INFORMATION FEATURES
July 24th, 1996
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
X O X O O X O O O O O X X O
O X O X O O X O X O O X X O
Service Mode Features File Transfer LCD contrast adjustment Line error mark Memory file printout (all files) 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 SRAM data download System parameter list Technical data on the TCR Thermal head parameters Transmission Status Report User data transfer
O O O O O O O O O O O X O O O O X O O X O O O O O O O X X O
Memory Files
X X O X O O O O O O O O O O
Max. number of files: 100 Max. number of stations/file: 30 Max. number of stations overall: 100
1-4
July 24th, 1996
OVERALL MACHINE INFORMATION COMPONENT LAYOUT
1.3. COMPONENT LAYOUT
2 1 3
4
5
6
7
8
19
18 17 16 15 9 14 13 12 11
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10
1.3.1. Mechanical Components No.
1 2 3 4 5 6 7 Development Toner Magazine Paper Feed-out Roller Hot Roller Fusing Pressure Roller
Name
Document Pick-up Roller Scanner Roller Laser Unit
Description
Picks up the top sheet of the document from the document table. Feeds the document through the scanner. Consists of the LDDR (Laser Diode Driver), focusing lens, F Lenses, square mirror motor, and other laser optic components. Consists of the toner supply mechanisum, the toner tank, and the development unit. Feeds paper out of the machine. Heat from this roller fuses the toner to the copy paper. Applies pressure to the paper during the fusing process
1-5
OVERALL MACHINE INFORMATION COMPONENT LAYOUT
July 24th, 1996
No.
8 9 10 11 12 13 14 15 16 17 18 19
Name
Fusing Fan Transfer Roller Charge Brush Roller Paper Feed Roller Paper Separation Pad Paper Pick-up Roller OPC Drum Toner Supply Roller Development Roller Toner Agitator Document Feed-out Roller Document Separation Pad
Description
Cools the interior of the machine. Applies a charge to the paper to pull the toner off the drum and onto the paper. Applies a charge to the drum. Feeds paper from the paper tray into the printer. Allows one sheet into the printer. Picks up the top sheet of paper from the tray. Organic Photoconductor Drum. Supplies the toner to the development roller. Applies toner to the latent image on the drum. Stirs up toner in the toner tank. Feeds the document out of the scanner. Allows one sheet into the scanner.
1-6
July 24th, 1996
OVERALL MACHINE INFORMATION COMPONENT LAYOUT
1.3.2. Electrical Components
5
4 3 2
1
6 7 8 9
H528V504.wmf
14 15 17 18
12 11 25
23 20 19 16 27 21 13 22 10 24
H528V503.wmf
26
1-7
OVERALL MACHINE INFORMATION COMPONENT LAYOUT
July 24th, 1996
1. PCBs No.
1 2 3 4 6 7 8 9 21 23
Name
MCB (Mechacincal Control Board) FCU (Facsimile Control Unit) NCU (Network Control Unit) PCB-R OPU (Operation Panel Unit) High-voltage Power Supply Scanner Sensor Board 5V Power Board LDDR (Laser Diode Driver) PSU (Power Supply Unit)
Description
Controls the printer part of the machine. Controls the machine. Contains a relay and switches to interface the machine to the network and the handset. Contains the resistors in the transfer bias circuit, between the ground plate and ground. Consists of the LCD and the key switches. Supplies high voltages to the charge, transfer, and development bias. Contains the scanner sensors (document, scan line, document exit), and the ADF cover open sensor. Generates the +5VE supply. Drives the laser diode. Supplies power to the machine.
2. Motors No.
20 18 22 5
Name
Tx Motor Main Motor Square Mirror Motor Fusing Unit Fan Motor
Description
Drives the scanner rollers. This DC stepper motor drives the printer mechanism. This high-speed servomotor drives the square mirror in the laser unit. Cools the interior of the machine.
1-8
July 24th, 1996
OVERALL MACHINE INFORMATION COMPONENT LAYOUT
3. Sensors No.
11 12 13 10 14 16 27
Name
Thermostat Thermistor Toner End Sensor Registration Sensor Paper Exit Sensor Paper End Sensor Synchronization Detector
Description
Cuts off the ac power supply to the fusing lamp if the surface temperature exceeds 180°C. Is used to monitor the hot roller surface temparature. Is used to detect the toner end condition. Is used to detect when paper is fed into the printer. Is used to detect when paper is at the fusing unit. Is used to detect when the paper tray is empty. Is used to synchronize the laser main scan.
4. Others No.
15 Document Pick-up Solenoid Paper Pick-up Solenoid Fusing Lamp Speaker Interlock Switch 26
Name
Contact Image Sensor
Description
Reads and converts the light reflected from the document into an analog video signal. An LED array which illuminates the document is included. When this is energized, tx motor drive is transmitted to the document pick-up roller. When this is energized, main motor drive is transmitted to the paper pick-up roller. The heat from this lamp fuses the toner to the paper. Allows the user to listen to the condition of the machine and the telephone line. If the top cover is open, this switch cuts off the +24V(SW) power supply. This component is also used as a top cover open sensor.
17 19 25 24
1-9
OVERALL MACHINE INFORMATION OVERALL MACHINE CONTROL
July 24th, 1996
1.4. OVERALL MACHINE CONTROL
FCU
TRXD
NCU
To the Network
FCIP
/STS /SOD Data & Control
Serial
Operation Panel
OP-LSI
AVIDEO Data & Control
MCB
Scanner Components
Printer Components
Optional Paper Feed Unit
H528D501.wmf
The FCU controls the entire system of the machine. The printer components and the optional paper feed unit are controlled by the MCB. The FCIP in the FCU is connected with the CPU in the MCB through a synchronized 8-bit serial interface. The line synchronization signal for laser printing is sent to the FCIP from the MCB. The scanner components are controlled by the FCU. Video data coming from the CIS is processed in the FCIP and then sent to the MCB for copying or sent to the NCU through the modem for transmission. The operation panel is controlled by the FCU through a serial interface.
1-10
July 24th, 1996
OVERALL MACHINE INFORMATION VIDEO DATA PATH
1.5. VIDEO DATA PATH
1.5.1. Transmission
Original
Contact Image Sensor Assembly
Image Sensor
LED Array
CIS Video Amplifier
FCU
Amp R144EFXL Modem
Video Processing Memory
DIP
FCIP
DCR
DATA/ADDRESS BUS
DRAM Line Buffer /FIFO Memory
SAF IC Card
Attenuator
ECM/SAF Memory
HIC
DIP:Digital Image Processor DCR:Data Compression & Reconstruction
NCU
To the network
H528v507.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.
1-11
OVERALL MACHINE INFORMATION VIDEO DATA PATH
July 24th, 1996
1.5.2. Reception
From the Network
NCU
HIC
FCU
Amplifier
MDM
E144EFXL Modem
DCR
FCIP
LIF
DATA/ADDRESS BUS
DRAM
Line Buffer /FIFO Memory ECM/SAF Memory Page Memory
MCB
LDDR
LIF: Laser Interface DCR:Data Compression & Reconstruction MDM: Modem
Copy Paper
H528v508.wmf
Data from the line passes to the modem through the NCU and hybrid IC. After the modem demodulates the data, the data passes to the DCR block, through either the FIFO or the ECM memory, where the data is decompressed to raster image data. The raster image data is then passed to the page memory for printing. After a page of data has been stored in the page memory, the data is sent to the MCB through the LIF block in the FCIP, and then to the LDDR.
1-12
July 24th, 1996
OVERALL MACHINE INFORMATION VIDEO DATA PATH
1.5.3. Copying
Original
Contact Image Sensor Assembly
Image Sensor
LED Array
CIS Video Amplifer
FCU
Video Processing Memory
DIP
FCIP
DCR LIF
SAF Memory IC Card
DATA/ADDRESS BUS
DRAM
Line Buffer /FIFO Memory ECM/SAF Memory Page Memory
MCB
LDDR
LIF: Laser Interface DCR:Data Compression & Reconstruction DIP:Digital Image Processor
Copy Paper
H528v509.wmf
Single copy / Multi-page copy The scanned data passes to the page memory after video processing in the DIP block in the FCIP. After a page of data has been stored in the page memory, the data is sent to the MCB through the LIF block, and then to the LDDR. This process is the same for multi-page copying.
1-13
OVERALL MACHINE INFORMATION POWER DISTRIBUTION
July 24th, 1996
1.6. POWER DISTRIBUTION
1.6.1. Distribution Diagram
+5V +5VD +12VD
LDDR
+5V
IC Card
+24V(SW) +5VE +5V
Square Mirror Motor
+5V +24V(SW)
+5V +24V +5VE
Option Panel NCU
Toner End Sensor
+5V
+24V(SW)
Document Pick-up Solenoid Tx Motor
+5VE +24V(SW)
Fusing Fan
MCB
+24V(SW) +5VD
FCU
Paper Pick-up Solenoid
+24V(SW)
+ -
5V Power Board
+24V
+24V
PSU
+5V +24V +12V +24V(SW) -5V +5V +24V(SW)
Thermistor AC Main Power Power Board Main Switch
Main Motor
+24V(SW)
+24V(SW) +5V
+5VE +5V
+5V -5V +12V
Interlock Switch
Thermostat Scanner Sensor Board CIS Sensor
+12V
High Voltage Paper Supply
Optional Paper Feed Unit
+24V (SW)
Fusing Lamp
Paper Pick-up Solenoid
LED Array
H528v510.wmf
The PSU supplies +24V, +24V(SW), +12V, and ±5V dc power to the FCU. The +5V Power Board generates +5VE from the +24V suply. The dc supplies are used as follows.
+24V +5VE +12V -5V +5V +12VP +5VD +24V(SW) This is normally on when the main switch is on. This is used for the document sensor, operation panel, and NCU. This is supplied even if the machine is in power saver mode. This supplies the LED Array in the CIS. This is used for the image sensor. This is normally on when the main switch on. This is supplied the to Flash ROM and the optional IC card. This supplies back up power for the system RAM and the optional IC card. A lithium battery is used to generate +5VD. This is interrupted if the interlock switch opens.
1-14
July 30th, 1996
DETAILED SECTION DESCRIPTIONS SCANNER
2. DETAILED SECTION DESCRIPTIONS
2.1. SCANNER
2.1.1. Mechanisms 1. Document Detection
[A]
H528D511.wmf
H528D510.wmf
[B]
The document sensor [A] detects when a document is placed in the ADF. The fold-out extension [B] helps support longer documents. 2. Pick-up and Separation
[D]
[A]
[E]
[C] [B]
H528D509.wmf
When the document pick-up solenoid [A] is turned on, it allows the tray lifting cam [B] to rotate. This allows the document plate [C] to be pushed up by a spring under the plate. The document pick-up roller [D] feeds the top sheet of the document into the scanner. The separation pad [E] prevents the document pick-up roller from feeding more than one sheet at the time.
2-1
DETAILED SECTION DESCRIPTIONS SCANNER
July 30th, 1996
3. Drive Mechanism
[A]
[C]
[B]
H528D512.wmf
The document is fed into the scanner by the scanner roller [A], and fed out by the exit roller [B]. The tx motor [C] drives the scanner roller and the exit roller. The document exit sensor detects when the document leaves the scanner.
[D]
H528D513.wmf
Note: When a communication error occurrs in immediate tx, the machine stops scanning the document, then feeds it out of the scanner.
2-2
July 30th, 1996
DETAILED SECTION DESCRIPTIONS SCANNER
4. Image Scanning
[E] [F] [D] [A]
[C] [B]
H528D515.wmf
The scanner consists of a contact image sensor (CIS) assembly [A] and a scanner roller [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 (216 mm width x 8 dots/mm). 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. The white level adjustment is performed at the factory, then the white level is stored in the FCU's SRAM. The white level must be adjusted when the FCU or the CIS is replaced, or the SRAM is cleared in the field. The CIS scans the document 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 by the document onto the element; the intensity of the light depends on the darkness of the area reflected.
Cross reference White level adjustment: Service Tables and Procedures (chapter 4) - Function 10, Shading Test
2-3
DETAILED SECTION DESCRIPTIONS SCANNER
July 30th, 1996
Standard resolution (Scanning to memory) · 3.85 line/mm resolution. · One line is read each motor step. · Scan speed: 2.75 s /A4 size. · The tx motor rotates at 800 pps to scan the document into the memory. · OR processing is always disabled to make scanning faster. Standard resolution (Immediate tx) · 3.85 line/mm resolution. · One line is read every two motor steps. · Scan speed: 5.5 s /A4 size. · The tx motor rotates at 400 pps to scan the document. · OR processing is done, to prevent narrow vertical lines from being broken up (OR processing can be disabled with scanner switch 00, bit 4). Detail resolution · 7.7 line/mm resolution. · One line is read every motor step. · Scan speed: 5.5 s /A4 size. · The tx motor rotates at 400 pps to scan the document. · In copy and halftone mode, scanning always uses detail resolution. Fine resolution · 15.4 line/mm resolution. · One line is read every motor step. · Scan speed: 11.0 s /A4 size. · The tx motor rotates at 400 pps to scan the document.
2-4
July 30th, 1996
DETAILED SECTION DESCRIPTIONS SCANNER
2.1.2. Scanner Timing Chart 1. Timing Chart
START EXIT
38 Steps
1
TX Motor
800PP S 400PP S
3
Pre-feeding 2.05 S
4
2
CIS LED
ON OFF
Document Pick-up Solenoid Scan Line Sensor
ON OFF 500ms ON OFF 187 Steps
[T1] [L1]
Data Read Document Exit Sensor Document Sensor
ON OFF
[L3] [L2] 37 Steps
ON OFF
ON OFF
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The following describes what is happening for the standard resolution at points 1 to 4 on the timing chart. 1. When the Start key is pressed, the pick-up solenoid turn on, then the tx motor feeds the document to the scan line sensor (400 pps). 2. The tx motor feeds the document through the scanner (800 pps). 3. The tx motor feeds the document out of the scanner. 4. The tx motor stops 82 steps after the document exit sensor was turned off.
2-5
DETAILED SECTION DESCRIPTIONS SCANNER
July 30th, 1996
2. Jam Conditions The main cpu detects a document jam if one of the following conditions occurs. Jam Condition Description
The scan line sensor does not switch on within 3.9 s [T1] of the tx motor starting. The jam condition is reset when the document, scan line, and exit sensors are turned off. The scan line sensor does not turn off after the maximum document length [L1] has been fed since it turned on. The jam condition is reset when the document, scan line, and exit sensors are turned off. The document exit sensor does not turn off after the maximum document length [L3] has been fed since the scan line sensor turned off. The jam condition is reset when the document, scan line, and exit sensors are turned off. The document exit sensor does not turn on when the tx motor has rotated for 160 mm feed length [L2] after the scan line sensor turned on. The jam condition is reset when the document, scan line, and exit sensors are turned off, and the ADF cover opened then closed. When the document exit sensor is off while the scan line sensor goes to off. The jam condition is reset when the document, scan line, and exit sensors are turned off, and the ADF cover opened then closed. The top cover is opened while the machine is working. The jam condition is reset when the top cover and the ADF cover are closed. The scan line, document, or document exit sensor is on during initialization. The jam condition is reset when the document, scan line, and exit sensors are turned off.
Error Code
1-00
Non-feed
1-01
Maximum document length exceeded
1-17
Document jam
No error code
Cover open
No error code
Others
No error code
2-6
DETAILED SECTION DESCRIPTIONS PRINTING
June 30th, 1996
2.2. PRINTING
2.2.1. Printing Process - Overview
H528D545.wmf
This machine uses a "write to black" system, using negative toner. · The charge brush roller applies a negative charge to the drum of -350 V to -1350 V, switched at 30 Hz. · The surface voltage of the drum is approximately -800 V. · The laser exposed area on the drum drops to about -50 V. · The development roller carries toner to the latent image on the drum surface. The bias voltages during printing: Development roller : -300 V Doctor blade: -550V Lower case: -287 V · The transfer roller attracts toner from the drum onto the paper. The bias applied is +3.2 kV. · This machine has no cleaning unit or waste toner tank.
2-7
July 30th, 1996
DETAILED SECTION DESCRIPTIONS PRINTING
2.2.2. OPC Drum
[C] [D]
[A] [B]
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This machine uses an organic photoconductor drum [A]. The diameter of the drum is 30 mm. It is driven by the main motor [B] through a gear train [C]. The charge brush roller [D] is also driven by the main motor. The drum cartridge is replaceable by the user. 2.2.3. Charge
[A] [B]
[C]
H528D517.wmf
The charge brush roller [A] is located in the drum unit. It applies the charge bias in direct contact with the drum [B]. The high voltage power supply applies a high voltage of -350 V to -1350 V, switched at 30 Hz, through plate [C]. Since the machine uses a charge brush roller, the ozone production is greatly reduced and the charge bias applied to a roller is relatively low compared to that for a corona wire. The charge brush roller rotates faster than the drum. (The speed ratio is about 4 : 1.) There is no cleaning mechanism. Also, toner is transferred back to the drum by the transfer roller in cleaning mode. The charge brush roller picks up some of this toner. In extreme cases, this may lead to vertical black lines on copies in areas corresponding to places on the brush that have excessive toner.
2-8
DETAILED SECTION DESCRIPTIONS PRINTING
June 30th, 1996
2.2.4. Laser Exposure 1. Overview
[C] [D]
[B] [A]
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The components of the laser section create a latent image on the drum. The charge on the exposed areas of the drum drops to about -50 V while non-exposed areas remain at about -800 V. This machine uses a rotating square mirror [A]. The beam emitted from the LDDR [B] is reflected by the square mirror to the line synchronization detector [C] for line synchronization in the main scan direction. The mirror's rotation speed is 8431.7 rpm. As a safety feature, the shutter [D] closes to block the laser beam path whenever the top cover is opened.
Cross reference Group 3 Facsimile Manual: section 4-3-3
2. Error Conditions LD Failure: The mechanical control board detects an LD failure when the laser power is out of the specified range. When this occurs, the machine warns the user on the LCD panel (SC code 2-22).
2-9
July 30th, 1996
DETAILED SECTION DESCRIPTIONS PRINTING
Mirror Motor Failure: The machine detects a mirror motor error when the MCB does not detect the line synchronization detector signal within 1 second of the mirror motor being turned on. The machine also detects a mirror motor error when the motor rotation is not within 8431.7 rpm ± 5% at 4.2 seconds after the motor turns on or if the motor is not within 8431.7 rpm ± 3% for more than 0.5 second during mirror motor operation. Since this error is detected with the line synchronization detector signal, the machine may detect LD malfunction as a mirror motor failure. When these errors occur, the machine warns the user on the LCD panel (SC code 3-31).
Cross reference Service Call Conditions: section 7-3
3. Toner Saving Mode In this machine, toner saving is done by reducing the number of dots actually printed, not by varying the development bias. In toner saving mode, the image data is filtered through the following four-line matrix. 1st 2nd 3rd 4th line line line line 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 . . . . . . . . . . . . . . . . . . . .
(1: Actual data printed, black or white; 0: Always a white pixel) Note: · Toner saving mode only works when printing fax messages and reports. (However, toner saving is disabled when receiving a halftone mode message in NSF/NSS mode.) · When toner saving mode is selected, the print image density is automatically set to "Normal"; in some cases, the image may become invisible if the Lighter setting is used.
Cross Reference Toner Saving Mode: User parameter 12, bit 2
Edge Enhancement In toner saving mode, the machine prints a black pixel whenever the data changes from white to black in the main scan direction. In this way, edges on the image are printed more clearly.
2-10
DETAILED SECTION DESCRIPTIONS PRINTING
June 30th, 1996
2.2.5. Development 1. Overview
[A] [E] [B] [A]
[F] [C]
[D]
H528D508.wmf H528D507.wmf
This machine contains a development toner magazine (DTM) [A], which contains the toner agitator [B], development roller [C], toner supply roller [D], doctor blade [E], and the toner tank [F]. At toner end, the entire DTM is replaced by the user. There are two rollers in the DTM: the toner application roller [D] and the development roller [C]. The toner agitator [B] stirs the toner and carries it to the toner supply roller [D]. The toner is then carried from the toner supply roller to the development roller. As the development roller turns past the doctor blade [E], only a thin coating of negatively charged toner particles stay adhered.
Cross reference Group 3 Facsimile Manual: section 4-4-2
During printing, a bias voltage of -280 V is applied to the development roller (when a print density setting of Normal is selected). The development bias changes in accordance with the print density selection (user parameter 12, Bit 3 and 4). Since the laser exposed areas on the drum are reduced to -50 V, the toner is trasnferred from the development roller onto these areas of the latent image as they turn past the drum. There is no DTM detection in this machine.
2-11
July 30th, 1996
DETAILED SECTION DESCRIPTIONS PRINTING
2. Development Bias
[D]
[C]
[A]
[B]
H528D516.wmf
The high voltage power supply [A] applies different voltages to the components of the DTM. The applied voltages are: · Development roller: -280 V [B] (depending on the user's print density selection) · Doctor blade: -550 V [C] · Lower casing: -287 V [D] The toner is negatively charged by the friction generated by the toner agitator.
2-12
DETAILED SECTION DESCRIPTIONS PRINTING
June 30th, 1996
3. Toner End Detection The toner end sensor [A] (a reflective photosensor) is located under the DTM. When the toner is almost empty, the sensor's light is reflected by the mirror [B] at the top of the toner tank. The machine monitors this sensor only when the main motor is on. If the sensor detects the reflected light 5 times in a row, within a specified period, the MCB detects a toner near end condition, and informs the FCU. The machine can then print 100 more sheets, at which time the FCU disables printing (toner end condition). At this time the DTM must be replaced. 2.2.6. Paper Feed 1. Paper Path
[A]: Paper Pick-up Roller [B]: Paper Feed Unit Pick-up Roller [C]: Registration Sensor [D]: Paper Exit Sensor [E]: Paper End Sensor [F]: Standard Tray [G]: Optional Paper Feed Unit [E] [F] [B]
[A]
H528D508.wmf
[D]
[C] [A]
[G]
[B]
H528D547.wmf
2-13
July 30th, 1996
DETAILED SECTION DESCRIPTIONS PRINTING
2. Paper Feed Mechanism (Standard Tray)
[E] [D]
[A]
[B] [C]
H528D524.wmf
[F]
H528D522.wmf
[A]: Main motor
Paper Feed Sequence When the paper pick-up solenoid [B] is turned on, the motor rotation is transferred to the paper pick-up roller [C] by the spring clutch [D]. When the solenoid is turned on, it allows the tray lifting cam [E] to rotate. This allows the bottom plate [F] to be pushed up by the spring. The top sheet of paper in the tray is fed by the paper pick-up roller. The paper feed solenoid is then turned off. The separation pad [G] prevents multi-feeding.
[H]
[G]
H528D521.wmf
The paper activates the registration sensor [H]. This sensor warns the printer that a sheet of paper is coming, to initialize the laser engine. It is also used for paper size and jam detection. If the paper size is determined not to match the selected paper size, a paper size error is detected. The machine stops printing and indicates the user of the incorrect paper size, but the image data is retained and will be printed out when the paper is reset in the tray. When the solenoid is turned off, the paper feed roller stops and the bottom plate returns to the original position. The paper end feeler [I] drops into the slot in the bottom plate to detect paper end when the paper tray is empty.
2-14
DETAILED SECTION DESCRIPTIONS PRINTING
June 30th, 1996
3. Paper Feed Mechanism (Optional Feed Unit) Paper Feed Sequence
[C] [D] [A] [B]
H528D523.wmf
H528D525.wmf
The paper feed sequence for the optional paper feed unit (PFU) is the same as the standard tray except for the following: · The paper pick-up roller of the PFU is driven by the machine's main motor. · The bottom plate [B] is lifted up when the release button [C] is pressed. · A corner separator [D] is used. Jam Detection: Registration Misfeed: The machine detects a misfeed if the registration sensor does not turn on within 2 seconds (4 seconds for the optional tray) after the paper pick-up solenoid is turned on. A misfeed is also detected if the registration sensor turns on before the paper pick-up solenoid is turned on. When a misfeed is detected, the machine will finish printing that page before turning off the drive components (error code 9-07 when the paper is fed from the standard tray, or 9-50 when the paper is fed from the paper feed unit). Paper Jam: The machine detects a paper jam if the registration sensor is on when the power is turned on or when the upper cover is closed. A jam is also detected if the registration sensor remains on for over 11 seconds. When a jam is detected, it immediately turns off all drive components, except the fusing unit fan.
2-15
July 30th, 1996
DETAILED SECTION DESCRIPTIONS PRINTING
2.2.7. Transfer 1. Transfer and Separation
[D] [C]
[A]
[B] [E]
H528D518.wmf
A transfer bias of +3.2 kV is applied to the transfer roller [A] from the high voltage supply [B]. This charge is applied through the torsion spring [C] and the conductive supporter [D]. The positively biased transfer roller pulls negatively charged toner onto the paper. The ground plate [E] and curvature of the drum both help the paper to drop away from the drum.
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DETAILED SECTION DESCRIPTIONS PRINTING
June 30th, 1996
2. Cleaning Mode If the paper is smaller than the printed image, or if a paper jam occurs during printing, toner may be transferred to the the transfer roller surface. To prevent toner from transferring to the back side of copies, the transfer roller has to be cleaned before the next printing run. While the machine is in the cleaning mode, the charge is applied to the drum, the drum is completely exposed by the laser, and -800 V is applied to the transfer roller. The negatively charged toner on the transfer roller is then transferred back to the drum. During the cleaning mode, the positive bias of +100 V is applied to the development roller to avoid any toner transfer to the drum. The machine goes through the cleaning mode in the following conditions: · At power-up · When the printer cover is opened and then closed during printing. · After a printer jam has been cleared.
2-17
July 30th, 1996
DETAILED SECTION DESCRIPTIONS PRINTING
2.2.8. Fusing 1. Fusing Temperature Control
C: Thermostat
[B] [A] [C]
H528D519.wmf
The power supplied to the lamp [A] is controlled by the MCB. The MCB uses the thermistor [B] to determine when to turn the fusing lamp on and off. When the main switch is turned on, the machine turns on the fusing lamp and raises the fusing temperature to 181° C. For printing, the machine keeps the fusing temperature at 176° C. When the printing operation is finished, the machine keeps the fusing temperature at 161° C for 3 minutes (depending on the power saver mode settings). Points to note: · Printing temperature: 176° C · Thermistor maximum: 250° C · Thermostat maximum: 180° C (the temperature of the hot roller would be about 300° C. 2. Power Saver Mode Settings The behaviour of the machine after printing depends on the following: · User level Power Saver Mode setting (100 ° C or room temperature) · Power Saver Mode timer (system bit switch 0B, bits 2 and 3) - User Setting: Fusing Lamp On (100 ° C) After printing, the fusing lamp temperature drops to 161° C. Then, the fusing lamp temperature will fall back to 100 ° C after 3 minutes, regardless of the system bit switch setting.
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DETAILED SECTION DESCRIPTIONS PRINTING
June 30th, 1996
- User Setting: Fusing Lamp Off 5 min 3 min 1 min
181°C 176°C 161°C
100°C
Room Temp
Warming up
Printing
Idle
Low temp mode
Energy Star Mode
H528D546.wmf
After printing, the fusing lamp temperature drops to 161° C. Then, the fusing lamp temperature will fall back to room temperature after 1 or 3 minutes, depending on the system bit switch setting. If the system bit switch is set to 5 minutes, the lamp temperature falls back to 100° C after 3 minutes, and then to room temperature after a further 2 minutes. If the power saver mode timer is set to "no limit", the temperature stays at 161° C for 3 minutes, then goes down and stays at 100° C.
2-19
July 30th, 1996
DETAILED SECTION DESCRIPTIONS PRINTING
3. Fusing Unit Drive
[B]
[A]
H528D520.wmf
The main motor [A] drives the fusing unit through a gear train. The paper exit sensor [B] detects when the paper is fed out of the unit. Jam Detection: Paper Exit The exit sensor detects a jam if it does not turn on between 3.5 and 4.5 seconds after the registration sensor is turned on. The exit sensor detects a jam if the exit sensor is on when the main switch is turned on or when the printer cover is closed. The sensor will also detect a fusing jam if it does not turn off between 3.4 and 4.7 seconds after the registration sensor is turned off (error code 9-09).
2-20
DETAILED SECTION DESCRIPTIONS PRINTING
June 30th, 1996
4. Fusing Unit Service Call Conditions The machine warns the customer on the LCD panel (SC code 0-02) when any of the following conditions occur (error code 9-22). · When the fusing temperature is below 90° C and does not increase at least 20° C within 12 to 30 seconds after the lamp turns on. · If the fusing temperature does not exceed 157° C within 60 seconds after the lamp turns on. · If the fusing temperature drops below 70° C when the low temperature (100° C) is selected in the power saver mode. · If the fusing temperature drops below 145° C while printing. · If the fusing temperature exceeds 200° C for more than 50 ms.
Cross reference Service Call Conditions: Section 7.3 Power Saver Mode: Section 2.3.1
5. Fusing Unit Fan The fusing unit fan cools the machine. The fan motor turns on for 2 seconds when the machine is turned on. It also turns on during printing and turns off 3 seconds after printing. The MCB detects a fusing unit fan error when the voltage of the motor falls below 160 mV for more than 2 seconds while turning.
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July 30th, 1996
DETAILED SECTION DESCRIPTIONS PRINTING
2.2.9. Page Separation and Data Reduction Incoming pages that are only slightly longer than the copy paper may be reduced in the sub-scan direction. Whether or not this happens depends on the settings of printer bit switches 03, 04 and 05. Reduction Enabled If bit 0 of printer switch 03 is at 1 (Enabled), the data will be reduced in the page memory to fit on the paper. However, data will only be reduced if the length of the incoming page is between 5 mm shorter and a certain maximum length. This maximum incoming page length that can be reduced depends on the copy paper size and on the reduction ratio stored in printer 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. Switch No. Sw 04 Sw 05 Bit 7 Not used 0: 4/3 0: Bit 6 Not used Bit 5 Legal 1: 4/3 0: Bit 4 F, F4 0: 8/7 1: Bit 3 A4 Bit 2 Letter Bit 1 Not used Bit 0 Not used
1: 12/11 1:
The following table shows the maximum incoming page length that can be reduced for each paper size. All lengths are in millimeters. The factory setting of the reduction ratio is 4/3.
Copy Paper Type A4 F/F4 Letter Legal Copy Paper Length 297 330.2 279.4 355.6 Maximum reducible incoming page length. Ratio = 4/3 Ratio = 8/7 Ratio= 12/11 386.0 330.9 315.8 411.7 368.8 352.2 362.6 310.6 296.6 411.7 397.9 379.7
Note: The page memory cannot reduce incoming pages longer than 411.7 mm. Incoming pages that are longer than the maximum length will not be reduced, but will be printed on two pages and treated in accordance with the setting of bit 1 of printer switch 00. If this bit is 1, the bottom few lines of the page will continue from where the first page left off.
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DETAILED SECTION DESCRIPTIONS PRINTING
June 30th, 1996
Reduction Disabled If bit 0 of printer switch 03 is at 0 (Disabled), the data will not be reduced. However, if the incoming page is up to x mm longer than the copy paper, the excess portion will not printed. The value of x can be from 0 to 15 mm. It is determined by the setting of bits 4 to 7 of printer switch 03.
Hex value 0 0 and so on until F 15 Value of X 0 1
Messages more than x mm longer than the copy paper will be printed out on two pages in accordance with the setting of bit 1 of printer switch 00 as explained earlier.
2.2.10. Paper Size Selection If the machine has an optional paper feed unit installed, the paper size to use is decided in accordance with the following rules. · If both trays contain the same paper size, the machine uses the paper in the optional paper feed unit first. · If the received page has to be split up and printed on two pages, both pages will be the same size. · If the trays contain different sizes, the paper size chosen for printing the received fax message is selected in accordance with the following table of priorities. The table assumes that reduction is enabled and that the reduction ratio is 4/3.
Received Fax Message Size Letter A4 F, F4 Legal · · Selected Paper Size A4 F, F4 2 3 1 2 3(R) 1 3(R) 2(R)
Letter 1 4(R) 4(R) 4(R)
Legal 4 3 2 1
The paper size priority is graded from 1 to 4. R: The data is reduced to fit on the printer paper.
2-23
DETAILED SECTION DESCRIPTIONS SYSTEM FEATURES
July 30th, 1996
2.3. SYSTEM FEATURES
2.3.1. Power Saver Modes 1. Going into a Power Saver Mode - Power Saver Timer When the power saver timer expires, the machine automatically goes into a Power Saver Mode. During the power saver mode, the fusing lamp is turned off or on according to the User Switch 05, bit 6 setting. All the LEDs on the operation panel are turned off and "SAVING ENERGY" is displayed on the LCD. The CPU is not turned off during the power saver mode. The machine returns to the standby mode in the following conditions: · When the document sensor is activated. · When any key on the operation panel is pressed. · When the handset goes off-hook.
Cross Reference Power saver timer initial setting: System Switch 0B, bits 2 and 3 (1 minute, 3 minutes, 5 minutes, or Unlimited: Timer disabled)
- Turning the Fusing Lamp On or Off The machine will not turn off the fusing lamp if one of the following conditions exists. · Mechanical error(s) · Service call error(s) It takes approximately 50 s to reach the printing temperature from room temperature after the machine turns on the fusing lamp. To avoid any communication error from memory overflow, the machine will not turn off the fusing lamp in the following conditions. · If the remaining SAF memory is less than 64 kbytes. · Within 30 minutes after a communication error occurs.
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July 30th, 1996
DETAILED SECTION DESCRIPTIONS SYSTEM FEATURES
2.3.2. Automatic Service Calls 1. Service Call Conditions The machine makes an automatic service call when one of the following conditions occurs.
Service Call Conditions Laser diode failure Fusing lamp failure Hexagonal mirror motor failure Fan motor failure Unexpected printer error (Printer Ready signal not detected.) Unexpected printer error (Valid signal not detected.) Excessive jams in the ADF/scanner Excessive jams in the printer The PM counter has reached the threshold (30,000 prints) The PM interval has expired Error Code 9-20 9-22 9-23 9-34 9-35 9-35 None None None None Sub-code 8002F9(H) 22 02 31 51 61 62 None None None None
Cross reference Service station number: Service Function 13 Troubleshooting: Chapter 7
2-25
DETAILED SECTION DESCRIPTIONS SYSTEM FEATURES
July 30th, 1996
2. Excessive Jam Alarms
JAM 6 5 4 3 2 1 0 NO-JAM1 16 12 8 4 0 NO-JAM2 48 32 16 48 pages fed without jam CLR Threshold (=48) 16 pages fed without jam 16 pages fed without jam 16 pages fed without jam DEC Threshold (=16) 8 16 24 32 40 48 56 64 OR CALL Threshold (=6)
Decrement Decrement Reset to zero
72
8
16
24
32
40
48
56
64
72
0
8
16
24
32
40
48
56
64
72
H516D535.wmf
The excessive jam alarm automatically notifies the service station when the machine's scanner or printer frequently has jam problems. Each type of jam has three counters allocated to it (JAM, NO-JAM1, NOJAM2). Each of these counters has a threshold value (CALL, DEC, and CLR respectively; these can be adjusted.) The machine uses these counters to monitor jams as follows. Each time a jam occurs: The JAM counter is increased by 1, and NO-JAM1 and NO-JAM2 are both set to zero. When JAM reaches CALL (6 by default), the machine sends an Auto Service Report with a System Parameter List. If a sheet of paper is fed without a jam occuring: NO-JAM1 and NO-JAM2 are both incremented by 1. When NO-JAM1 reaches DEC (16 by default), NO-JAM1is set to zero, and JAM is decremented by 1. When NO-JAM2 reaches CLR (48 by default), NO-JAM2 and JAM are both reset to zero. The CALL, DEC, and CLR thresholds can be adjusted for each type of jam by rewriting RAM data. The addresses of these thresholds are given on the next page.
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July 30th, 1996
DETAILED SECTION DESCRIPTIONS SYSTEM FEATURES Address (H) ADF Printer 8001E6 8001EA 8001E7 8001EB 8001E8 8001EC 8001E9 8001ED Initial Settings 10 (H) 06 (H) 30 (H) 00 (H) Sys. Para. List X Y --
Parameters DEC (1 - 255; 0 = Disabled) CALL (3 - 15; 0 = Disabled) CLR (Low) (High)
Counters JAM: Jam counter used to place a service call NO-JAM1: Counter used for JAM counter decrement NO-JAM2: Counter used for clearing the JAM counter
Address (H) ADF Printer 8001DF 8001DE 8001E0 (Low) 8001E1 (High) 8001E3 8001E2 8001E4 (Low) 8001E5 (High)
Sys. Para. List Z -- --
The system parameter list gives the current DEC and CALL thresholds and JAM counter value as X, Y, and Z respectively. The Call Service indicator does not light for an excessive jam alarm, and the machine can be operated normally after the automatic service call has been made. Also, the counters related to the jam location are reset to zero automatically after the call. Then, the alarm is disabled until either bit 3 or bit 4 of address 8002DD(H) is reset to zero. 3. Periodic Service Call The periodic service call notifies the condition of the machine to the service station. The call is made periodically at a time interval programmed in the following RAM addresses.
Parameters Call interval: 01 through 15 month(s) (BCD) 00: Periodic Service Call Disabled Date and time of the next call Year: last two digits of the year (BCD) Month: 01 through 12 (BCD) Day: 01 through 31 (BCD) Hour: 00 through 23 (BCD) Address (H) 800261 800262 800263 800264 800265
To change these settings after programming, change the call interval. Then the machine automatically changes the remaining parameters by referring to the interval and the current date and time. The Call Service indicator does not light for a periodic service call, so that the machine can be operated normally after it has sent the service call.
2-27
DETAILED SECTION DESCRIPTIONS SYSTEM FEATURES
July 30th, 1996
4. PM Call If PM call is enabled, the machine will make an automatic service call when the PM counter reaches the PM threshold. Program the PM call interval at the following RAM addresses. (Default setting: 30,000 sheets)
Address (H) 800191 800192 800193 Bits 7 - 4 Tens Thousands Hundred thousands Bits 3 - 0 Units Hundreds Ten thousands
Cross reference PM call enable/disable: System switch 01, bit 0
The Call Service indicator does not light for a PM service call, and the machine can be operated normally after it has made the service call. 5. Effective Term of Service Calls If a time limit for the effectiveness of service calls is programmed, the machine stops making automatic service calls after the time limit. Program the time limit at the following addresses. This function is disabled when all of these addresses are 00(H).
Address (H) 80026C 80026D 80026E
Year: last two digits of the year (BCD) Month: 01 through 12 (BCD) Day: 01 through 31 (BCD)
2-28
July 30th, 1996
DETAILED SECTION DESCRIPTIONS PCBs
2.4. PCBs
2.4.1. FCU
DRAM
(Optional) IC Card Working RAM ECM/SAF Memory Page Memory System ROM (Flash) System RAM (SRAM)
FCU
Video SRAM
Operation Panel
OP-LSI
DATA/ADDRESS BUS
R144EFXL Modem
Control Signals FPD
Scanner Sensor
Speaker
M
Tx Motor
FCIP Hybrid IC (HIC) Drivers Amplifier
LED Contact Image Sensor
Document Solenoid
NCU
Option Paper Feed Unit
MCB
Printer Components
M Main Motor
Paper Solenoid
PSU
Fusing Lamp
H528d500.wmf
The FCU (Facsimile Control Unit) contains the FCIP (Facsimile Control and Image Processor), SRAM, System ROM, R144EFXL modem, and Video SRAM. The CPU core (RU8) in the FCIP controls the entire system of the machine. The printer components are controlled by the CPU in the MCB. The FCIP and the MCB are connected with a serial interface. The modem inside the FCIP is used for Tone signal and DTMF generation and reception, and V.21 communications. In addition, the Rockwell R144EFXL modem is used for V.17, V29, and V27ter communications. The SAF memory can be extended by 1 or 2 Mbytes with an IC optional card. A 512 kB (4 Mbit) Flash ROM is used for the system ROM. Software in this ROM can be rewritten from the IC card slot or by RDS.
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DETAILED SECTION DESCRIPTIONS PCBs
July 30th, 1996
1. FCIP (Facsimile Controller and Image Processor)
· · · · · · · · ·
CPU (RU8 - Main CPU) Modem (V.21, DTMF, and Tone generator) Data compression and reconstruction (DCR) Digital image processor (DIP) Laser interface (LIF) DMA controller Clock generation (CKG) Stepper motor control Ringing signal detection
2. Modem (Rockwell R144EFXL)
·
V.17, V.29, V27ter modem
3. ROM
·
512 kB (4 Mbit) flash ROM for system software storage
4. SRAM
· ·
2 MB SRAM for system and user parameter storage Backed up by the battery on the FCU
5. DRAM
·
1.5 MB DRAM shared between the Line Buffer, ECM Buffer, Page Memory, and SAF memory. · This DRAM is not backed up by the battery. 6. Video SRAM
·
512B SRAM for video processing
7. 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 FCU · 38.00053 MHz oscillator for the R144EFXL modem · 27.801 MHz oscillator for the plotter clock to the LIF
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July 30th, 1996
DETAILED SECTION DESCRIPTIONS PCBs
8. FPD (Facsimile Power Driver)
·
Stepper motor driver
9. HIC (Hybrid IC)
· · ·
2-4 wire switching Filters and amplifiers Monitor speaker driver
10. CIS Video Amplifer
·
Level control for the video signal from the CIS
11. Drivers (Transistors)
· ·
LED array driver Document pick-up solenoid driver
12. Jumpers, Switches, and Test Points
Item SW1 CN5-1 CN5-3 CN5-6 CN5-8 TB1 Description Switches the backup battery ON/OFF Analog video signal COM1 ground Synchronization signal Scanner clock Switches the power supply to the flash ROM boot block on the FCU 1-2 pins shorted: +5V (the boot block cannot be overwritten) 2-3 pins shorted: +12V (the boot block can be overwritten) Warning: Do not change this jumper setting, unless the boot block in the Flash ROM needs to be overwritten by Function 12. (Refer to Chapter 4 for more details.)
13. Interlock Switch
·
The interlock switch (+24VSW) disables the power supply to the drive components, the printer components, and the high voltage power supply.
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DETAILED SECTION DESCRIPTIONS PCBs
July 30th, 1996
2.4.2. PSU
Main Switch
F1 F2 Surge Protection Noise Filter Primary Smoothing Circuit
T1
ACL
+12V Switching Circuit Regulator GND -5V
Inlet Board
AC Input
ACN
Interlock SW
+24VSW
PSU
Control Circuit Output Detection Chopper Circuit
+24V 5V Monitor
GND GND PC Anode
Fusing Lamp Output
HTN HTL Phase Control
Fusing Lamp
PSU:120V/230V The values of some parts on the primary side are different between the 120V and 230V versions.
H528D532.wmf
· ·
+24V, +24V(SW), +12V, and ±5V dc generation Fusing lamp ac power supply and phase control
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July 30th, 1996
DETAILED SECTION DESCRIPTIONS PCBs
2.4.3. NCU (USA)
JP5 TIP
OHDISW
TRXD
RING
Current Sensor JP6
24V
OHDISW Q6 NCU Hook0 Hook1 Ex Ring
24V Relay T1 R1
Ring Detect RITONE
Ext. Tel DP/OffHook Detection
Ex TDI Q5 CMLSW
H528d533.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
July 30th, 1996
2.4.4. NCU (Europe/Asia)
RITONE SHUNT T1 TIP RING R1 GS OHDI Sw. JP24 DOSW OHDISW GS Sw. CMLSW Hook0 SHUNT N.C T1 R1 N.C GS CN5 CN7 Ring Detection Circuit Hook1 GSSW CSEL0 CSEL1 RSEL ExRing Current Sensor CML Relay Filter (16Hz) DO Sw. TRXD Loop Closure Circuit
H528D534.wmf
1. Control Signals and Jumpers
Country Germany Holland Austria Italy Spain Ireland Finland Switzerland Other CSEL0 CN2-4 L L L L L H L L L CSEL1 CN2-5 H H H L L L H H H RSEL CN1-13 H H H L L L L L 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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July 30th, 1996
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 2.4.4. 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 switch 0F) Protocol requirements (G3 switch 0B) PABX access code (RAM address 8000BB) PABX access method (RAM address 8000AD) Machine's serial number Service station's fax number PM call (System switch 01 - bit 0) Periodic service call (RAM address 800261) Items to Program (User Administrator Level) Clock Initial programming items On/off switches Display/report language Fusing power control during energy saver mode (User parameter switch 05 - bit 6) Function No. Function 08 Function 01 Function 01 Function 06 Function 06 Function 14 Function 13 Function 01 Function 06 Function No. Function 91 Function 61 Function 62 Function 93 Function 63
3.3. INSTALLING OPTIONAL UNITS
An optional paper feed unit is available for this machine. Refer to the Operator's Manual for how to install and set up the paper feed unit.
3-1
July 30th, 1996
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 FU Y ^ >
s 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. press 7 5. Either: · Adjust more bit switches - go to step 3.
·
COM DF : BITSW 03: 0000 0000 1000 0000
Example: To change the value of bit 7,
Finish - FU
4-1
SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
July 30th, 1996
4.1.2. System Parameter List (Function 02)
FU 6 1 9 9 5 then immediately Y 2. 0 2 Y S
1. 3. Finish: FU
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
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
4-2
July 30th, 1996
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 > . 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
ADDRESS = 800020 DATA = 80
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-MEM.R/W 1-MEM.DUMP
ADDRESS = 000000 DATA = 00
ADDRESS = 800020 DATA = 20
800020
> Pressing # will increment the number at
the cursor by one. Pressing * will decrement the number at the cursor by one.
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July 30th, 1996
6. Either: · View more addresses - go to step 4.
·
Finish - FU
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.
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
80008001S . 5. Finish: FU
Example: Start at 800000, end at 8001FF.
MEMORY DUMP
4.1.8. Counter Display/Rewrite (Function 07) 1. FU 6 1 9 9 5 then immediately Y 2. 0 7 Y
0-COUNTER 2-DTM 1-PM 3-OPC
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
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3. Either: Check the transmitted, received, scanned and printed page counters, and the printer and scanner jam counters press 0
TX: RX:
012345 012345
(To see the scanned and printed page counters, press #. ers, press # again.)
SCAN PRINT
: :
012345 012345
To see the printer and scanner jam count-
S.JAM: P.JAM:
000000 000000
Check the PM counter - press 1
PM COUNTER:
001234
Check the DTM counter - press
2 3
DTM COUNTER: 001234
Check the OPC counter - press
OPC COUNTER:
001234
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 2. 0 8 Y 3. 0 then immediately Y
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-NCU 2-DTMF
1-MODEM 3-DETECT
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
July 30th, 1996
4. Scroll through the parameters using
NCU NO.04 = 005
KPAD/<>
> or < . If you want to change a
>>>> 0 0 5 Y 5. To finish : N FU.
then press Y . Example: Set NCU parameter 04 to 005.
value, enter the new value at the keypad,
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 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
MODEM TEST START/< 800Hz
>
> or < .
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
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 < .
4.1.12. Modem Detection Test (Function 08) Note: This function can be used only when G3 bit switch 0B bit 5 (French PTT requirements) is 1 in European models. It cannot be used in USA models.
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
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: FU
0-NCU 2-DTMF
1-MODEM 3-DETECT
MODEM DET START/<> V21 300BPS
> or <
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
July 30th, 1996
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-LED/LCD
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
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-LAMP 2-SHADING
1-ADF
LAMP
START 0 0 0
5. To stop the test, press s 6. To finish: N FU
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
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 2-SHADING
1-ADF
START ADF
S.
5. To stop the test, press s 6. Finish: N FU
4.1.16. Shading Test (Function 10) Do the following after replacing the contact image sensor or the FCU. (Also after RAM reset level 1.) 1. FU 6 1 9 9 5 then immediately Y 2. 1 0 Y 3. 2 4. Open the ADF cover and hold the image sensor shading chart [A] (P/N: H0689300) against the sensor as shown in the diagram. 5. Press
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-LAMP 2-SHADING
1-ADF
START SHADING
[A]
S.
H528M502.wmf
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4.1.17. 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 or 1. 6. Press S . A test pattern is printed. 7. To finish: N FU
FUNCTION KPAD/NEXT SERVICE FUNCTIONS
0-PATTERN
1-MECH
PATTERN PRINT 0-1
KPAD
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
1-MECH
START MECH
FU
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SERVICE TABLES AND PROCEDURES SERVICE LEVEL FUNCTIONS
4.1.19. 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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4.1.20. Software Download (Function 12) Instead of replacing an EPROM to update the machine's software, 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 FCU. The external medium for the new software can be an FCU or an EPROM board. 1. Turn off the machine.
[C]
[D] [A]
3 1
[B]
H528M501.wmf
2. Insert the Flash/SRAM Copy Tool [A] into the IC card slot [B], then connect the 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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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 and disconnect the tool. Then turn the machine back on. 10. Print out the system parameter list and check the ROM version on it. Note: In rare cases, the boot block will have to be rewritten. In such cases, you must do the following in addition to the above procedure. · Before step 1, open the right cover and change the jumper at TB1 on the FCU as shown in the diagram on the previous page. · After step 3, set bit 5 of system switch 02 to 1. · Before switching on the machine again in step 9, put TB1 back to the default position (pins 1-2 shorted). · Make sure to set bit 5 of system switch 02 back to 0 when the procedure is completed.
4.1.21. Software Upload (Function 12) This function copies the software from the machine's built-in FCU to an external FCU. 1. Turn off the machine. 2. Connect the Flash/SRA