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FACSIMILE EQUIPMENT
SERVICE MANUAL
MODEL: FAX255/FAX275/ FAX355MC/FAX375MC/ FAX-515/FAX-525DT/ FAX-525MC/HOMEFAX3
© Copyright Brother 1999 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in writing from the publisher. Specifications are subject to change without notice.
PREFACE
This publication is a Service Manual covering the specifications, construction, theory of operation, and maintenance of the Brother facsimile equipment. It includes information required for field troubleshooting and repair--disassembly, reassembly, and adjustment--so that service personnel will be able to understand equipment function, to rapidly repair the equipment and order any necessary spare parts. To perform appropriate maintenance so that the facsimile equipment is always in best condition for the customer, the service personnel must adequately understand and apply this manual. This manual is made up of six chapters and appendices.
CHAPTER I. CHAPTER II. CHAPTER III. CHAPTER IV. CHAPTER V. CHAPTER VI. APPENDICES
GENERAL DESCRIPTION INSTALLATION THEORY OF OPERATION DISASSEMBLY/REASSEMBLY AND LUBRICATION MAINTENANCE MODE ERROR INDICATION AND TROUBLESHOOTING EEPROM Customizing Codes & Circuit Diagrams
This manual describes the model and its versions to be destined for major countries. The specifications and functions are subject to change depending upon each destination.
CHAPTER I.
GENERAL DESCRIPTION
CHAPTER I. GENERAL DESCRIPTION CONTENTS
1.
EQUIPMENT OUTLINE ................................................................................. 1.1 External Appearance and Weight ...........................................................
I-1 I-1
1.2 Components ............................................................................................ I-1 2. SPECIFICATIONS .......................................................................................... I-2
1. EQUIPMENT OUTLINE
1.1 External Appearance and Weight
The figure below shows the equipment appearance and approximate dimensions.
137.0 (H)
240.0 (D) 299 (W) (Unit: mm)
Weight: Machine proper In package
Approx. 2.9 kg (excluding a paper roll) Approx. 4.0 kg
1.2
Components
The equipment consists of the following major components:
Handset Control panel ASSY (with recording paper cover)
Inner cover
Main frame
Power supply PCB
Recorder & cutter unit
NCU PCB
Scanner frame ASSY Main PCB
Drive unit Bottom plate
I1
2. SPECIFICATIONS
Model Color Modem Speed Coding Method Transmission Speed CCITT Group Input/Output Width Handset Automatic Cutter ADF Capacity (pages) Anti-curl System Roll Paper Size (Standard thermal/Therma PLUS) LCD Size On-screen Programming Memory Capacity Super Fine Smoothing Gray Scale (levels) One-touch Dialing Speed Dialing Telephone Index Super Telephone Index Hook Key (TEL Key) Fax/Tel Switch TAD Interface Enlargement/Reduction Enhanced Remote Activation Distinctive Ringing (FAX Ability) Next-fax Reservation Help Caller ID (Caller Display) Automatic Redialing Auto Reduction Multi-resolution Transmission Polling Delayed Transmission Delayed Polling Coverpage Call Reservation Call-back Message Activity Report Auto CNG Detection (New) Transmission Verification Report ECM Broadcasting Quick Scanning Out-of-paper Reception Multi Copy Multi Transmission PCI (Missing link) Confidential Mailbox FAX255 Gray (1293) 9600 bps MH 15 sec. G3 Max. 8.5" x 8.5" Yes Yes 10 Yes 164'/98' (1"-core) 16 x 1 Yes No Yes Yes 64 by Dithered Method 10 locations 10 locations Yes No Yes Yes Yes No Yes Yes No Yes, simple Yes, w/ enhancement Yes No Yes Yes (No secure polling) Yes, 1 timer No No No No No Yes Yes, on LCD No No No No No No No No FAX275 White (1485) 9600 bps MH 15 sec. G3 Max. 8.5" x 8.5" Yes Yes 10 Yes 164'/98' (1"-core) 16 x 1 Yes No Yes Yes 64 by Dithered Method 10 locations 15 locations Yes No Yes Yes Yes No Yes Yes Yes Yes, simple Yes, w/ enhancement Yes No Yes Yes (No secure polling) Yes, 1 timer No No No No No Yes Yes, on LCD No No No No No No No No
I2
Model Color Modem Speed Coding Method Transmission Speed CCITT Group Input/Output Width Hold Key (Mute Key) Automatic Cutter ADF Capacity Anti-curl System Roll Paper Size (Standard thermal/Therma PLUS) LCD Size On-screen Programming Memory Capacity Super Fine Smoothing Gray Scale (levels) One-touch Dialing Speed Dialing Telephone Index Super Telephone Index Speaker Phone Fax/Tel Switch TAD Interface Enlargement/Reduction Enhanced Remote Activation Distinctive Ringing (FAX Ability) Next-fax Reservation Help Caller ID (Caller Display) Automatic Redialing Auto Reduction Multi-resolution Transmission Polling Delayed Transmission Delayed Polling Coverpage Call Reservation Call-back Message Activity Report Auto CNG Detection (New) Transmission Verification Report ECM Broadcasting Quick Scanning Out-of-paper Reception Multi Copy Multi Transmission PCI (Missing link) Fax Forwarding Fax-on-demand Fax Retrieval ICM Recording Time Memo/2-way Recording Page Memory Paging Personal Fax Mail box (5) Personal Voice Mail Box (5) Remote Control TAD Type Toll Saver Voice-on-demand
FAX355MC/FAX375MC White (1485) 14400 bps MH 9 sec. G3 8.5"/8.5" Yes Yes 10 pages Yes 164'/98' (1"-core) 16 x 1 Yes 512 KB Yes Yes 64 by Dithered Method 10 50 Yes No Yes (Full Duplex) Yes Yes No Yes Yes Yes Yes, simple Yes, w/ enhancement Yes No Yes Yes (No secure polling) Yes, 1 timer No No No No No Yes Yes, on LCD Yes Yes Yes Yes, 20 pages Yes No Yes Yes No Yes 15 minutes Yes Yes, 20 pages Yes No No Yes DSP type Yes No
FAX-525DT/FAX-525MC Gray (1293)/White (1485)* 14400 bps MH 10 sec. G3 Max. 216/216 mm Yes Yes 10 pages Yes 50 m/30 m (1"-core) 16 x 1 Yes 512 KB Yes Yes 64 by Dithered Method 10 50 Yes No Yes (Full Duplex) Yes Yes No Yes Yes for DEN/ARL/NZ Yes Yes, simple Yes for UK/NLD/SWE/NOR/ BEL/FRA/DEN/ARL/NZ Yes No Yes Yes (w/ secure polling) Yes, 3 timers Yes No No No Yes Yes Yes, on LCD Yes Yes Yes Yes, 20 pages Yes No Yes Yes No Yes 15 minutes Yes Yes, 20 pages Yes No No Yes DSP type Yes No * FAX-525DT: Gray (1293) FAX-525MC: White (1485)
I3
Model Color Modem Speed Coding Method Transmission Speed CCITT Group Input/Output Width Handset Automatic Cutter ADF Capacity (pages) Anti-curl System Roll Paper Size (Standard thermal/Therma PLUS) LCD Size On-screen Programming Memory Capacity Super Fine Smoothing Gray Scale (levels) One-touch Dialing Speed Dialing Telephone Index Super Telephone Index Hook Key (TEL Key) Fax/Tel Switch TAD Interface Enlargement/Reduction Enhanced Remote Activation Distinctive Ringing (FaxAbility) Next-fax Reservation Help Caller ID (Caller Display) Automatic Redialing Auto Reduction Multi-resolution Transmission Polling Delayed Transmission Delayed Polling Coverpage Call Reservation Call-back Message Activity Report Auto CNG Detection (New) Transmission Verification Report ECM Broadcasting Quick Scanning Out-of-paper Reception Multi Copy Multi Transmission PCI (Missing link)
FAX-515 Gray (1293), White (1485)* 9600 bps MH 15 sec. G3 Max. 8.5" x 8.5" Yes Yes 10 Yes 50 m/30 m (1"-core) 16 x 1 Yes No Yes Yes 64 by Dithered Method 10 50 Yes No Yes Yes Yes No Yes Yes** Yes Yes, Simple Yes*** Yes No Yes Yes Yes, 1 timer Yes No No No Yes (15) Yes Yes, on LCD No No No No No No No, Yes****
HOMEFAX3 White (1485) 9600 bps MH 15 sec. G3 Max. 8.5" x 8.5" Yes Yes 10 Yes 50 m/30 m (1"-core) 16 x 1 Yes No Yes Yes 64 by Dithered Method 8 50 Yes No Yes Yes Yes No Yes Yes Yes Yes, simple Yes Yes No Yes Yes Yes, 1 timer Yes No No No Yes Yes Yes, on LCD No No No No No No No
* White (1485) only for the Australian versions ** Only for the Australian and Danish versions *** Only for the U.K., Dutch, Norwegian, Belgium, French, Danish and Swedish versions **** Yes only for the Australian versions
I4
CHAPTER II.
INSTALLATION
CHAPTER III.
THEORY OF OPERATION
CHAPTER III. THEORY OF OPERATION CONTENTS
1.
OVERVIEW ..................................................................................................... III-1
2.
MECHANISMS ................................................................................................ III-2 2.1 Transmitting Mechanism (Feeding and scanning documents) ............... 2.1.1 Automatic document feeder (ADF).................................................. III-2 III-2
2.1.2 Scanner ........................................................................................... III-3 2.2 Receiving Mechanism (Feeding recording paper and printing data) ...... 2.2.1 Anti-curl system (ACS) .................................................................... 2.2.2 Automatic cutter .............................................................................. III-4 III-4 III-4
2.2.3 Recorder .......................................................................................... III-4 2.3 Power Transmission Mechanism ........................................................... 2.3.1 Structure of the gear train ............................................................... 2.3.2 Description of planetary gear system .............................................. 2.3.3 Power transmission for four operation modes ................................. [ 1 ] Recording mode (Solenoid: OFF, Motor rotation: Forward) ........ [ 2 ] Scanning mode (Solenoid: OFF, Motor rotation: Reverse) .......... [ 3 ] Copying mode (Solenoid: ON©OFF, Motor rotation: Forward) ... [ 4 ] Cutter driving mode (Solenoid: ON, Motor rotation: Reverse) ..... 2.3.4 Power transmission route ............................................................... 2.4 Sensors and Actuators ........................................................................... III-5 III-5 III-7 III-8 III-9 III-10 III-11 III-12 III-14 III-15
3.
CONTROL ELECTRONICS ...........................................................................
III-17
3.1 Configuration ........................................................................................... III-17 3.2 Main PCB ................................................................................................ III-18 3.3 NCU PCB ................................................................................................ III-20 3.4 Control Panel PCB ................................................................................. 3.5 Power Supply PCB ................................................................................ III-22 III-23
1. OVERVIEW
LCD Control panel Automatic cutter
Scanner (CIS unit) Controller
Recorder
Drive unit
(Motor and solenoid)
Line
NCU Power supply Telephone Speaker
III 1
2. MECHANISMS
The equipment is classified into the following mechanisms: s Transmitting Mechanism s Receiving Mechanism s Power Transmission Mechanism s Sensors and Actuators Feeding and scanning documents Feeding recording paper and printing data Switching the power transmission route
2.1
Transmitting Mechanism (Feeding and scanning documents)
The transmitting mechanism consists of the document stacker, automatic document feeder (ADF), document feeding related rollers, scanner, and document sensors. (For details about the sensors, refer to Section 2.4.) For the drive power source, refer to Section 2.3.
Document stacker
,, ,,, , ,, ,,, ,
Document Separation roller ASSY ADF parts Scanner (CIS unit)
White pressure roller
(Front)
2.1.1
Automatic document feeder (ADF) If the operator sets documents on the stacker and starts the transmitting operation, the ADF (consisting of the separation roller ASSY and ADF parts) feeds those documents into the equipment, starting from the bottom sheet to the top, page by page. Each document advances to the scanner, and then it is fed out of the equipment with the white pressure roller.
III 2
2.1.2
Scanner The scanner uses a contact image sensor (CIS) unit which consists of an LED array illuminating documents, a self-focus lens array collecting the reflected light, a CIS PCB carrying out photoelectric conversion to output picture element data, and a cover glass on which a document advances. When the document passes between the white pressure roller and the cover glass, it is scanned.
III 3
2.2
Receiving Mechanism (Feeding recording paper and printing data)
The receiving mechanism consists of the recording paper roll holder, anti-curl system (ACS) plate, platen, thermal recording head, automatic cutter, and sensors. (For details about the sensors, refer to Section 2.4.) The recording paper is routed on the ACS plate to the recording head which prints onto the heat-sensitive recording paper pressed by the platen according to received image signals. The printed paper is further fed through the cutter chute and cut by the automatic cutter page by page. For the drive power source, refer to Section 2.3.
Recording paper roll
,, ,,, , ,, ,,, ,
Platen ACS plate Recording head
Cutter's upper blade (Front)
Cutter's lower blade
2.2.1
Anti-curl system (ACS) The ACS eliminates curl peculiar to rolled recording paper by curving the paper towards the opposite side of the curl with the ACS plate.
2.2.2
Automatic cutter The automatic paper cutter consists of an upper blade (rotary) and a lower blade (stationary). As the upper blade rotates around the left end hub, the recording paper will be cut. Upon completion of cutting, the upper blade returns to its home position which is detected by the cutter HP sensor.
2.2.3
Recorder The recorder, which is incorporated in the middle of the machine, consists of the recording head unit, coil spring, and platen. It prints according to received image signals.
III 4
2.3
Power Transmission Mechanism
The equipment has a single drive motor whose power transmission route can be switched by the planetary gear train and the solenoid. This switching allows the equipment to function in four operation modes (recording, scanning, copying, and cutter driving modes).
2.3.1
Structure of the gear train The gear train consists of two groups of gears: one group on the drive unit and the other on the scanner frame ASSY. Mounting the drive unit onto the scanner frame ASSY makes those two groups of gears engage with each other so that the rotation torque of the motor on the drive unit is transmitted to the separation roller, white pressure roller, and platen. Shown below are a group of gears, the motor and solenoid on the drive unit. The cutter gear (Q) is integrated in the cutter flange (R) whose boss is placed in the hole provided in the cutter's upper blade.
A (Motor gear) Spring Clutch arm J (Gear 20) K (Gear 16/24) C2 (Planet gear 20A) P (Gear 24) Q (Cutter gear) R (Cutter flange)
Solenoid
Boss of cutter flange (Front)
C1 (Planet gear 20B) B (Sun gear 18/82) Drive Unit (viewed from the motor mounting side) Drive unit
Shown below is a group of gears on the scanner frame ASSY.
L (Separation roller gear) M (Gear 23) N (Flanged gear 23) O (White pressure roller gear) F (Gear 18) E (Gear 14/20) D (Gear 16) I (Reverse gear) H (Platen gear) (Front)
G (Gear 18L)
Scanner frame ASSY Scanner Frame ASSY
III 5
Shown below is a gear train constructed by combining the drive unit and scanner frame ASSY. The motor rotation is transmitted via the planet gear 20B (C1) to the gear 16 (D) and via the gear 16/24 (K) to the separation roller gear (L).
K (Gear 16/24) L (Separation roller gear)
O (White pressure roller gear)
(Front) C1 (Planet gear 20B) D (Gear 16) H (Platen gear)
Combination of Drive Unit and Scanner Frame ASSY
III 6
2.3.2
Description of planetary gear system The planetary gear train consists of the sun gear 18/82, two planet gears 20, arm A, and arm B, as shown below.
Stopper of arm A Motor gear
Sun gear 18/82
Planet gear 20A
Planet gear 20B Arm A
Arm B
Planetary Gear System
If the motor rotates, the sun gear 18/82 rotates so that the rotational torque is transmitted to the engagement between the sun gear and the planet gears 20. Since the arms and planet gears are so designed that the moment of the arms is less than that of the planet gears, the arms turn around the center shaft in the same direction as the sun gear 18/82. If the planet gear(s) becomes engaged with any other gear so that the arm cannot turn any more, the rotational torque of the sun gear 18/82 is transmitted to that planet gear. Accordingly, the planet gear starts rotation in the opposite direction of the sun gear 18/82.
III 7
2.3.3
Power transmission for four operation modes Depending upon the solenoid ON/OFF state and the motor rotation direction, the planetary gear train switches the power transmission route for the four operation modes.
Solenoid ON/OFF state
Solenoid: OFF Spring
Motor rotation direction
Clutch arm Forward Reverse
Cutout X (engaged with stopper of arm A)
Motor gear
Stopper of arm A Sun gear 18/82
Planet gear 20A Solenoid Planet gear 20B Solenoid: ON Arm B Arm A
Section Y
III 8
[1]
Recording mode (Solenoid: OFF, Motor rotation: Forward) In the recording mode, the control electronics deactivates the solenoid. When the motor rotates in the forward direction, the clutch arm turns clockwise with the spring and its cutout X becomes engaged with the stopper of arm A. Once arm A is locked, the planet gear 20A (C2) will not be engaged with any other gear but simply idle. The motor rotation turns the sun gear 18/82 (B) counterclockwise so that the planet gear 20B (C1) transmits the rotation via the gears D through G to the platen gear (H).
Clutch arm Cutout X of clutch arm Stopper of arm A C2 (Planet gear 20A)
C1 (Planet gear 20B)
B (Sun gear 18/82)
Arm A Locked by Cutout X of Clutch Arm A (Motor gear)
(Front) Solenoid
C1 (Planet gear 20B) B (Sun gear 18/82) Active Gears on the Drive Unit
H (Platen gear) F D E
G
(Front)
Active Gears on the Scanner Frame ASSY
III 9
[2]
Scanning mode (Solenoid: OFF, Motor rotation: Reverse) Just as in the recording mode, the control electronics deactivates the solenoid in the scanning mode to lock arm A. The motor rotates in the reverse direction and the sun gear 18/82 (B) rotates clockwise so that the planet gear 20B (C1) transmits the rotation to the separation roller gear (L) and white pressure roller gear (O) via the several gears.
Clutch arm Cutout X of clutch arm Stopper of arm A C2 (Planet gear 20A)
C1 (Planet gear 20B)
B (Sun gear 18/82)
Arm A Locked by Cutout X of Clutch Arm A (Motor gear)
J K
(Front) Solenoid
C1 (Planet gear 20B) B (Sun gear 18/82) Active Gears on the Drive Unit L (Separation roller gear)
M
O (White pressure roller gear) N
(Front) Active Gears on the Scanner Frame ASSY
III 10
[3]
Copying mode (Solenoid: ON©OFF, Motor rotation: Forward) The control electronics at first activates the solenoid to release the stopper of arm A from the cutout X of the clutch arm while rotating the motor in the forward direction. Accordingly, the sun gear 18/82 (B) rotates counterclockwise so that both the planet gears 20B (C1) and 20A (C2) transmit the rotation; C1 rotation to the platen gear (H) and C2 rotation to the separation roller gear (L) and white pressure roller gear (O). Once the planet gear 20A (C2) becomes engaged with gear K, the control electronics deactivates the solenoid.
Clutch arm Cutout X of clutch arm
Stopper of arm A C2 (Planet gear 20A)
C1 (Planet gear 20B)
B (Sun gear 18/82)
Arm A Released from Cutout X of Clutch Arm A (Motor gear) K C2 (Planet gear 20A)
Solenoid C1 (Planet gear 20B) B (Sun gear 18/82) Active Gears on the Drive Unit
(Front)
L (Separation roller gear) M
O (White pressure roller gear) N H (Platen gear) F D E G
(Front)
Active Gears on the Scanner Frame ASSY
III 11
[4]
Cutter driving mode (Solenoid: ON, Motor rotation: Reverse) The control electronics activates the solenoid to release the stopper of arm A from the clutch arm. When the motor rotates in the reverse direction, the sun gear 18/82 (B) rotates clockwise so that the planet gear 20A (C2) transmits the rotation to the cutter gear (Q) via gear P. Since the planet gear 20B (C1) is blocked by the section Y of the clutch arm, it is merely idle without engaging with any other gear.
Clutch arm
Stopper of arm A
C2 (Planet gear 20A) Section Y of clutch arm Arm B C1 (Planet gear 20B)
B (Sun gear 18/82)
Arm B Blocked by Section Y of Clutch Arm
A (Motor gear) C2 (Planet gear 20A)
Q (Cutter gear) R (Cutter flange) P Solenoid
(Front) B (Sun gear 18/82) Active Gears on the Drive Unit
I (Reverse gear)
H (Platen gear) G (Front) Active Gears on the Scanner Frame ASSY
III 12
The cutter gear (Q) is a two-stepped gear whose inside gear is a one-tooth sector gear. While the cutter gear (Q) rotates by one turn for one stroke of the upper blade of the cutter, the one-tooth sector gear slightly turns the platen gear (H) clockwise via the reverse gear (I) to feed the recording paper back into the equipment. This prevents the upper blade of the cutter from scratching the leading edge of the remaining paper.
I (Reverse gear)
One-tooth sector gear
Q (Cutter gear)
III 13
2.3.4
Power transmission route Rotation of the motor gear is transmitted as shown below.
K J C2 A A: B: C1: C2: D: E: F: G: H: I: J: K: L: M: N: O: P: Q: Motor gear Sun gear 18/82 Planet gear 20B Planet gear 20A Gear 16 Gear 14/20 Gear 18 Gear 18L Platen gear Reverse gear Gear 20 Gear 16/24 Separation roller gear Gear 23 Flanged gear 23 White pressure roller gear Gear 24 Cutter gear
P B C1
Q
Gears on the Drive Unit
L
O M N
I F D E G H
Gears on the Scanner Frame ASSY
[1]
Recording Mode (Solenoid: OFF, Motor rotation: forward) A B C1 D E F G H C2 (idling)
[2]
Scanning Mode (Solenoid: OFF, Motor rotation: reverse) A B C1 J K L M N O C2 (idling)
[3]
Copying Mode (Solenoid: ON OFF, Motor rotation: forward) A B C1 D E F G H C2 K L M N O
[4]
Cutter Driving Mode (Solenoid: ON, Motor rotation: reverse) C1 (idling) A B C2 P Q ( I G H)
(Reverse-feeds recording paper)
III 14
2.4
Sensors and Actuators
This equipment has two photosensors and four mechanical switches as described below. Sensor name Document front sensor Document rear sensor Paper empty (PE) sensor Cover sensor Hook switch sensor Cutter home position (HP) sensor Type Photosensor (PH1) Photosensor (PH2) Mechanical switch (SW1) Mechanical switch (SW2) Mechanical switch (SW3) Mechanical switch Located on Main PCB Main PCB Main PCB Main PCB Main PCB Drive unit
· ·
Document front sensor which detects the presence of documents. Document rear sensor which detects the leading and trailing edges of pages to tell the control circuitry when the leading edge of a new page has reached the starting position and when the scan for that page is over.
These photosensors are of a reflection type consisting of a light-emitting diode and a lightsensitive transistor. Each of them has an actuator separately arranged (see the next page). When an actuator is not activated, its white end lies in the path of light issued from the lightemitting diode and reflects its light into the light-sensitive transistor. If a document is fed in so as to activate the actuator, the actuator's white end goes out of the light path. With no reflected light to go into the light-sensitive transistor, the sensor detects the presence of documents. · · · · PE sensor which detects when the recording paper runs out. Cover sensor which detects whether the control panel is closed. Hook switch sensor which detects whether the handset is placed on the handset mount. Cutter HP sensor which detects the home position of the upper rotary blade of the automatic cutter.
Each of these four sensors has an actuator separately arranged (see the next page). If an actuator is activated, its lower end releases or pushes down the lever provided on the corresponding sensor so that the sensor signals the detection.
Path of actuator's end
Approx. 0.7 mm
Glass
Lightemitting diode
Lightsensitive transistor
Photosensor
III 15
(Rear)
Cover sensor actuator (Panel lock arm) Cover sensor
Hook switch sensor actuator Hook switch sensor Document front sensor actuator Document front sensor Document rear sensor actuator Document rear sensor PE sensor actuator PE sensor Cutter HP sensor actuator (Cutter flange) Cutter HP sensor
Location of Sensors and Actuators
III 16
3. CONTROL ELECTRONICS
3.1 Configuration
The hardware configuration of the facsimile equipment is shown below.
Line
External telephone
* Provided on the FAX355MC/ FAX375MC/FAX-525DT/FAX525MC J1 2-pin
J2
Handset Speaker
J3
2-pin 4-pin
NCU PCB
(Note) 12-pin: U.S.A. versions 18-pin: European versions
(Note)
2-pin
*1
5-pin
*2
6-pin
LCD
Control panel PCB
Motor Drive unit Solenoid
2-pin
FAX engine
Main PCB
8-pin 2-pin 6-pin 7-pin PCI *
12-pin 2-pin 2-pin
CIS unit
13-pin
Mic *
Cutter HP Battery * sensor
FPC key
Recording head Power supply PCB
*1 On the main PCB are these sensors: · PE sensor (SW1) · Cover sensor (SW2) · Hook switch sensor (SW3) · Document front sensor (PH1) · Document rear sensor (PH2) *2 On the drive unit is the cutter HP sensor.
Configuration of Facsimile Equipment
III 17
3.2
Main PCB
The main PCB, which is the nucleus controlling the entire operation of the equipment, consists of a FAX engine (ASIC), memories, MODEM, motor drive circuitry, sensor detection circuitry, and analog circuits for scanning, recording, and power transmission shifting.
ROM Control panel E2PROM Recording head FAX engine (ASIC) Motor driver Motor
SRAM * DRAM ** NCU Power supply Speaker Mic** Automatic cutter
CIS
Sensors Ni-MH battery ** PCI**
E2PROM:
Electrically Erasable Programmable Read-only Memory
* Provided on the FAX255/FAX275/FAX-515/HOMEFAX3 ** Provided on the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC
Block Diagram of Main PCB
III 18
FAX255/FAX275/FAX-515/HOMEFAX3
Amplifier
SRAM
Analog front end processor ROM
Analog switch Transistor array
Speaker amplifier
EEPROM
FAX control gate array
FAX355MC/FAX375MC/FAX-525DT/FAX-525MC
Amplifiers
Analog switch
DRAM
Analog front end processors ROM
Speaker amplifier Transistor array Analog switch EEPROM FAX control gate array
III 19
3.3
NCU PCB
The NCU PCB switches the communications line to telephone or built-in MODEM, under the control of the main PCB. U.S.A. versions
LINE
Surge absorber
Dial pulse generator
Line relay (CML relay)
Line transformer
MAIN PCB
High-impedance transformer
MAIN PCB
EXTERNAL TELEPHONE
Loop current detector
Calling signal detector
MAIN PCB
HANDSET
Telephone circuit
MAIN PCB
Surge absorbers Diode bridge
Transformer Relay
Transformer
Modular jacks
Photocouplers
Amplifier
III 20
European versions
LINE
Surge absorber
Dial pulse generator
Line relay
DC loop circuit
Line transformer
MAIN PCB
High-impedance transformer
MAIN PCB
EXTERNAL TELEPHONE
Loop current detector
Calling signal detector
MAIN PCB
HANDSET
Telephone circuit
MAIN PCB
Transformers Surge absorbers Diode bridges
Modular jacks
Photocoupler
Relays Photocouplers
Amplifier
III 21
3.4
Control Panel PCB
The control panel PCB and the main PCB communicate with each other by serially transmitting commands and data. The control panel unit consists of a gate array and LCD, which are controlled by the gate array according to commands issued from the FAX engine on the main PCB. The calendar clock is backed up by the backup circuit on the main PCB. The panel FPC is a flexible keyboard PCB which integrates the key matrix having rubber keytops.
Main PCB SDIN SDOUT PCLK FAX Engine
Control Panel PCB LCD
Serial Communications Ports Gate Array I/O Ports +5V POWER
Panel FPC (Key Matrix)
+5V Backup Circuit Reset Circuit RESET
Control Panel PCB and its Related Circuit
III 22
3.5
Power Supply PCB
The power supply uses the switching regulation system to generate DC power (+26.6V and +8V) from a commercial AC power supply. The +26.6V source is stabilized and fed to the motor and solenoid for feeding documents and recording paper or activating the automatic cutter, and also fed to the CIS LED array. It is also fed to the main PCB where the H26.6V source is generated. The H26.6V source outputs 26.6V only when the H26.6V ON/OFF control signal is High, for driving the recording head. The +8V source is not stabilized and fed to the speaker. It is also fed to the main PCB where the 3-terminal regulator eliminates unstabilized components of the +8V source to generate stabilized +5V source. The +5V source is fed to the logic, control panel, and sensors.
Fuse Commercial AC Power Line Lightning Surge Absorption Circuit Link Filter Rectifier Circuit
Main PCB H26.6V ON/OFF Control Signal
Output Feedback 26.6 V Output Circuit 8V Output Circuit
H26.6V Output Circuit
H26.6V
Oscillator Circuit
26.6 V
8V
Power Supply Circuit
III 23
CHAPTER IV.
DISASSEMBLY/REASSEMBLY AND LUBRICATION
CHAPTER IV. DISASSEMBLY/REASSEMBLY AND LUBRICATION
CONTENTS
1.
DISASSEMBLY/REASSEMBLY .................................................................... s Safety Precautions ....................................................................................
IV-1 IV-1
s Preparation ................................................................................................ IV-3 s How to Access the Object Component ...................................................... s Disassembly Order Flow ........................................................................... 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 IV-3 IV-4
ACS Plate .............................................................................................. IV-5 ROM Cover and Battery ASSY ............................................................. IV-6
Inner Cover ............................................................................................ IV-8 Control Panel ASSY .............................................................................. Recording Paper Cover, Panel Rear Cover, Control Panel and Microphone .................................................................................... Scanner Frame ASSY ........................................................................... White Pressure Roller and CIS Unit ...................................................... Drive Unit (Main Motor and Cutter HP Sensor) ..................................... Separation Roller ASSY ........................................................................ IV-9 IV-11 IV-14 IV-17 IV-18 IV-21 IV-22 IV-23 IV-24 IV-25 IV-26 IV-27
1.10 Document Front and Rear Sensor Actuators ........................................ 1.11 Recording Head Release Lever ............................................................ 1.12 Recorder & Cutter ASSY ....................................................................... 1.13 Platen and Cutter Chute ....................................................................... 1.14 Recording Head and Cutter Unit ........................................................... 1.15 Hook Switch Sensor Actuator ................................................................
1.16 Speaker.................................................................................................. IV-27 1.17 Bottom Plate .......................................................................................... IV-28 1.18 Main PCB, NCU PCB and Power Supply PCB ..................................... 1.19 Paper Empty Sensor Actuator ............................................................... IV-29 IV-33
2.
LUBRICATION ................................................................................................ IV-34
1. DISASSEMBLY/REASSEMBLY
s Safety Precautions To prevent the creation of secondary problems by mishandling, observe the following precautions during maintenance work. (1) (2) (3) (4) Always turn off the power before replacing parts or units. When having access to the power supply, be sure to unplug the power cord from the power outlet. Be careful not to lose screws, washers, or other parts removed for parts replacement. When using soldering irons and other heat-generating tools, take care not to damage the resin parts such as wires, PCBs, and covers. Before handling the PCBs, touch a metal portion of the equipment to discharge static electricity; otherwise, the electronic parts may be damaged due to the electricity charged in your body. When transporting PCBs, be sure to wrap them in conductive sheets such as aluminum foil. Be sure to reinsert self-tapping screws correctly, if removed. Tighten screws to the torque values listed on the next page. When connecting or disconnecting cable connectors, hold the connector bodies not the cables. If the connector has a lock, always slide the connector lock to unlock it. Before reassembly, apply the specified lubricant to the specified points. (Refer to Section 2 in this chapter.) After repairs, check not only the repaired portion but also that the connectors and other related portions function properly before operation checks.
(5) (6) (7) (8) (9) (10)
IV 1
Tightening Torque List
Location Recording paper cover Panel rear cover Control panel PCB Scanner frame ASSY Drive unit Motor Cutter HP sensor Recorder & cutter unit Bottom plate Grounding wire Screw type Taptite, cup B M3x8 Taptite, cup B M3x8 Taptite, cup B M3x8 Taptite, cup B M3x8 Taptite, cup S M3x6 Taptite, cup S M3x8 Taptite, cup S M3x6 Taptite, pan B M1.6x8 Taptite, cup S M3x8 Taptite, cup B M3x8 Screw, pan (washer) 4x6DB Q'ty 2 4 1* 2 3 1 1 1 1 4 1 Tightening torque kgf·cm (N·cm) 5 ±2 (49 ±20) 5 ±2 (49 ±20) 5 ±2 (49 ±20) 5 ±2 (49 ±20) 7 ±2 (69 ±20) 7 ±2 (69 ±20) 6 ±2 (59 ±20) 1 ±0.5 (10 ±5) 7 ±2 (69 ±20) 5 ±2 (49 ±20) 7 ±2 (69 ±20)
* Provided on the FAX355MC/FAX375MC/FAX-525DT/FAX525MC
IV 2
s Preparation Prior to proceeding to the disassembly procedure, (1) Unplug - the modular jack of the telephone line, - the modular jack of the curled cord (and remove the handset), and - the modular jack of an external telephone set if mounted. (Not shown below.) (2) Remove - the document support.
Telephone line cord
Handset and curled cord
Document support
s How to Access the Object Component · On the next page is a disassembly order flow which helps you access the object component. To remove the recording head, for example, first find it on the flow and learn its number (d in this case). You should remove parts numbered 1 through 4, 6, 8, a, b, and c so as to access the recording head. Unless otherwise specified, the disassembled parts or components should be reassembled in the reverse order of removal.
·
IV 3
s Disassembly Order Flow
1 ACS plate
3 Inner cover
2
ROM cover and battery ASSY*
17
Bottom plate
4 Control panel ASSY
* Provided on the FAX355MC/ FAX375MC/FAX-525DT/ FAX-525MC.
5 Panel lock arm 5
Recording paper cover
5 Panel rear cover
- ADF parts
Control panel
- Control panel PCB - FPC key - LCD - Microphone*
6 Scanner frame ASSY 7 White pressure roller 7 CIS unit 8 Drive unit - Motor - Cutter HP sensor
11
Recording head release lever
9 Separation roller ASSY
10
Document front and rear sensor actuators
12
Recorder & cutter ASSY
13
Platen
13
Cutter chute
14
Recording head
14
Cutter unit
18
18
Main PCB
NCU PCB Power supply PCB
15
Hook switch sensor actuator
16
19
Speaker
Paper empty sensor actuator
IV 4
1.1
ACS Plate
(1) (2) Open the control panel ASSY. Push down the locking pawl of the main frame with the tip of a flat screwdriver and move the ACS plate to the left.
Control panel ASSY ACS plate
"X"
"Y"
Main frame
Flat screwdriver
Locking pawl
s Reassembling Notes · When installing the ACS plate, first fit hole "X" at the left end of the ACS plate over the left-hand boss provided on the main frame and then fit hole "Y" at the right end over the right-hand boss.
IV 5
1.2
ROM Cover and Battery ASSY*
(*FAX355MC/FAX375MC/FAX-525DT/FAX-525MC) (1) (2) Insert the tip of the spring hook at the center or left half of the locking arm as shown below, then lift up the hook to release and move the ROM cover to the right. For the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC: Slightly lift up the ROM cover and disconnect the battery harness from the main PCB, then take out the ROM cover together with the battery ASSY. For the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC: Remove the battery ASSY from the ROM cover.
Battery ASSY*
(3)
Spring hook
ROM cover Locking arm
Battery harness* ROM cover
(Hook this area.)
P1 P3 SW3 P7 SW2 P8 P9 P10
Battery connector
P6 PH1
P13
P12
P11
P4
Main PCB
PH2 P5 SW1
Main PCB
(FAX355MC/FAX375MC/FAX-525DT/FAX-525MC)
IV 6
(4)
For the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC: To take out the main PCB or the power supply PCB in Section 1.18, unhook the battery harness core and cutter HP sensor harness core from bosses "C" and "D," respectively, at this stage.
Boss "C" (Unhook the power supply harness core from here.)
Power supply harness
Cutter HP sensor harness
(Rear)
Main PCB
CIS harness Electrolytic capacitor
Motor harness
Relay "F" Rib "E" Boss "D" (Unhook the cutter HP sensor harness core from here.) Solenoid harness
Resistors PE sensor actuator
Recording head harness
IV 7
1.3
Inner Cover
(1) (2) Swing the recording head release lever (blue lever) up to the head release position. While lifting up the inner cover slightly, release the four latches with the tip of a flat screwdriver in the order (1 to 4) shown below.
Pawls "P"
Inner cover
3 4 Four latches 1 to 4 2 1
Recording head release lever (Blue lever)
s Reassembling Notes · · Before installing the inner cover, swing the recording head release lever up for greater ease. Fit the pawls "P" of the inner cover into the square hole provided in the left rear corner of the main frame and then push the inner cover down into place.
IV 8
1.4
Control Panel ASSY
(1) (2) Disconnect the main-panel harness and the main-mic harness* from the main PCB, and then take out those harnesses from the groove of the main frame. Slightly bring the control panel ASSY back up towards you so that you can release the panel lock arm from the boss of the main frame. Pull out the panel lock arm to the left and fully open the control panel ASSY.
* The main-mic harness is provided on the FAX355MC/FAX375MC/FAX-525DT/FAX525MC.
Panel lock arm
Boss
Control panel ASSY
Main-panel harness and main-mic harness* routed through the groove Main-mic harness* Main-panel harness
Main-mic harness* Main-panel harness
P1 P3 SW3 P7 SW2 P8 P9 P10
P6 PH1 PH2
P13
P12
P11
P4
SW1 P5
(Main PCB)
(FAX355MC/FAX375MC/FAX-525DT/FAX-525MC)
IV 9
(3)
Push the control panel ASSY back and remove it.
Control panel ASSY
Main-mic harness* Main-panel harness
Panel lock arm
* The main-mic harness is provided on the FAX355MC/FAX375MC/FAX-525DT/FAX525MC.
s Reassembling Notes · Make sure that the main-panel harness and main-mic harness* are routed through the groove provided on the recording paper cover and are kept in place with the panel lock arm, as illustrated on page IV-13.
IV 10
1.5
Recording Paper Cover, Panel Rear Cover, Control Panel and Microphone*
(*FAX355MC/FAX375MC/FAX-525DT/FAX-525MC) (1) (2) (3) (4) Place the control panel ASSY upside down. Turn the panel lock arm until the cutout provided in it becomes aligned with the boss of the arm support, then pull it out to the left. Remove the two screws "a" from the recording paper cover and lift up the rear edge of the cover. Remove the ADF parts (ADF film, separator and leaf spring), using the spring hook and a flat screwdriver. Once removed, they will become unusable and new parts should have to be put back in. Remove the four screws "b" from the panel rear cover, then unhook the latches "L" and lift up the cover. For the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC: Remove the screw "c" from the control panel PCB. Unlock the LCD cable connector and disconnect the LCD flat cable to take out the control panel PCB and the FPC key.
"a" Recording paper cover Arm support "a"
(5) (6)
Panel lock arm
ADF parts
ADF film Separator Leaf spring "b"
"b" "b"
"b" Panel rear cover "c"* FPC key FPC key connector Control panel PCB Main-panel harness LCD cable connector Microphone* Control panel
Latches "L"
* Provided on the FAX355MC/ FAX375MC/FAX-525DT/FAX525MC. LCD flat cable LCD
IV 11
(7) (8)
To separate the FPC key from the control panel PCB, unlock the FPC key connector and disconnect the FPC key. For the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC: Take out the microphone* and its harness* from the control panel.
Bosses
Main-mic harness* Guides
Control panel
* Provided on the FAX355MC/FAX375MC/ FAX-525DT/FAX-525MC.
(9)
To take out the LCD, remove the control panel PCB and the FPC key in step (6). Pull up the clamps with your fingers and take out the LCD to the front, as shown below.
Clamp
LCD
(Rear) Clamp
s Reassembling Notes · · When installing the LCD, take care not to scratch or damage the cover sheet. Replace it if scratched or damaged. A new LCD is covered with a protection sheet. Before installing it, remove the protection sheet.
IV 12
·
When setting the recording paper cover on the control panel, first insert the right and left front corners under sections "X" of the control panel and put the cover into place. Make sure that the main-panel harness and main-mic harness* are routed as shown below.
Control panel
"X"
Boss "Y"
Panel lock arm
Recording paper cover
Main-panel harness Main-mic harness*
* Provided on the FAX355MC/ FAX375MC/FAX-525DT/FAX-525MC.
·
After securing the recording paper cover with the screws, be sure to route the main-panel harness and the main-mic harness* through the groove provided on the recording paper cover and then set the panel lock arm to keep those harnesses in place, as illustrated below.
Boss "Y" Main-panel harness and main-mic harness* Recording paper cover
Boss "Y"
Control panel Panel lock arm
Recording paper cover
Main-panel harness
Main-mic harness*
IV 13
1.6
Scanner Frame ASSY
(1) (2) (3) Be sure to swing the recording head release lever (blue lever) down to the front position. Remove the two screws. Slightly lift up the rear edge of the scanner frame ASSY and disconnect the following five harnesses from the main PCB: · · · · · (4) Cutter home position (HP) sensor harness (2-pin) CIS harness (7-pin) Recording head harness (12-pin) Solenoid harness (2-pin) Motor harness (6-pin)
Lift up the scanner frame ASSY from the rear and take it out from the main frame. NOTE: Do not hold the lower paper chute but the upper paper chute. The lower paper chute is easily deformed.
FAX255/FAX275/FAX-515/HOMEFAX3
Upper paper chute (Hold here.)
Wrong handling
Scanner frame ASSY Lower paper chute (Do not hold here.)
"A"
Main frame "A"
"B" (NCU connector) "B" ACS grounding spring Cutter HP sensor harness (2-pin)
P2 SW3 SW2 P7 P3
P1
CIS harness (7-pin) Recording head harness (12-pin)
PH1 P5 P10
P9
P8
PH2 SW1 P4
Main PCB
Solenoid harness (2-pin) Motor harness (6-pin)
IV 14
FAX355MC/FAX375MC/FAX-525DT/FAX-525MC
Upper paper chute (Hold here.)
Wrong handling
Scanner frame ASSY Lower paper chute (Do not hold here.)
"A"
"A"
Main frame
"B" (NCU connector) "B" ACS grounding spring Cutter HP sensor harness (2-pin)
P1 P3 SW3 P7 SW2 P8 P9 P10
Recording head harness (12-pin) CIS harness (7-pin)
P11
P6
PH1
P13
P12
P4
PH2 SW1 P5
Main PCB Motor harness (6-pin) Solenoid harness (2-pin)
IV 15
(5)
Lift up the ACS grounding spring.
s Reassembling Notes · · · Before putting the scanner frame ASSY back onto the main frame, be sure to set the ACS grounding spring as illustrated on the previous page. Make sure that tabs "A" of the scanner frame ASSY are fitted in cutouts "B" provided in the main frame. (See the illustration on the previous page.) For the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC: After putting the scanner frame ASSY back onto the main frame, route the harnesses and arrange the cores as follows, referring to the illustration below. Hook the power supply harness core on boss "C." Check that the cutter HP sensor harness runs through a core, and then hook the core on boss "D." Push the CIS harness core and the recording head harness core into position, to the left of rib "E" and behind relay "F." Route all these harnesses under boss "D."
If any of these harnesses and cores are out of the specified position, the scanner frame ASSY or ROM cover may not be put back into place. · For the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC: After connecting these harnesses, check that neither the electrolytic capacitor nor resistors are tilted towards the PE sensor actuator. If tilted, they may interfere with normal operation of the sensor actuator.
Boss "C"
Power supply harness
Cutter HP sensor harness
(Rear)
Main PCB
CIS harness Electrolytic capacitor
Motor harness
Relay "F" Rib "E" Resistors Boss "D" Solenoid harness Recording head harness PE sensor actuator
(FAX355MC/FAX375MC/FAX-525DT/FAX-525MC)
IV 16
1.7
White Pressure Roller and CIS Unit
(1) (2) Turn the bushing of the white pressure roller clockwise approx. 90° and pull it out to the right. Lift up the left end of the white pressure roller and push it to the right.
Bushing
White pressure roller
(Front)
CIS unit
Bushing
(3) (4)
Unhook the two springs, using the spring hook. Slightly lift up the CIS unit and disconnect the CIS harness. The CIS support also comes off.
CIS unit
CIS harness CIS support
Spring Scanner frame ASSY
CIS holder
s Reassembling Notes · · Before putting the white pressure roller back into place, wipe it with an alcohol-dampened cloth. When replacing the CIS unit, remove the CIS holders (secured with screws) from the old CIS unit and install them to a new CIS unit. IV 17
1.8
Drive Unit (Main Motor and Cutter HP Sensor)
(1) (2) Turn the scanner frame ASSY upside down. Remove the adhesive tape to release the CIS harness, motor harness, solenoid harness, and cutter HP sensor harness.
(Left) Scanner frame ASSY (placed upside down)
Lower paper chute Sheath of CIS harness
Adhesive tape
Solenoid harness Cutter HP sensor harness Recording head harness CIS harness Motor harness
(3) (4) (5)
Place the scanner frame ASSY rightside up. Remove the four screws. Fully turn the cutter flange clockwise. Hold the drive unit with your left hand and then slightly separate its rear edge from the scanner frame ASSY in the direction of arrow "X" in order to release the boss of the cutter flange from the upper blade.
Scanner frame ASSY
Solenoid spring "X"
(M3x6)
(Front)
(M3x6) (M3x8) Upper blade Boss of cutter flange Cutter flange
IV 18
(6)
After releasing the boss of the cutter flange from the upper blade, turn the upper blade clockwise as shown below and take the drive unit off from the scanner frame ASSY.
Drive unit
Boss of cutter flange
Upper blade
(7)
To take out the motor, remove the screw, lightly press the locking arm and turn the motor counterclockwise. The motor bracket also comes off.
Motor Motor bracket Locking arm
Drive unit
Cutter HP sensor Motor harness Solenoid harness Cutter HP sensor harness
IV 19
(8)
To take out the cutter HP sensor, remove the screw.
Drive unit
Cutter HP sensor
s Reassembling Notes · · · When installing the motor bracket, fit the two holes "a" over the positioning bosses provided on the drive unit. Make sure that the locking arm clamps the motor. When installing the drive unit to the scanner frame ASSY, hold the resin part of the drive unit, taking care not to grip the solenoid spring. Fully turn the cutter flange clockwise and turn the upper blade to the angle shown below, and then fit the boss of the cutter flange into the hole of the upper blade.
Drive unit
Solenoid spring (Do not grip here.)
"a"
"a"
Boss of cutter flange Upper blade
IV 20
1.9
Separation Roller ASSY
(1) Push down the latch with the tip of a flat screwdriver and move the separation roller ASSY to the left. Then remove the roller to the right and pull out the roller shaft to the left.
Separation roller ASSY Scanner frame ASSY Latch
(Front)
IV 21
1.10 Document Front and Rear Sensor Actuators
(1) Turn the document front sensor actuator as shown below and move it to the left (viewed from the rear).
Scanner frame ASSY
Document front sensor actuator
(Rear)
(2)
Turn the document rear sensor actuator as shown below and move it to the right (viewed from the front).
Scanner frame ASSY Document rear sensor actuator
(Front)
IV 22
1.11 Recording Head Release Lever
(1) (2) (3) Place the scanner frame ASSY upside down. Swing the recording head release lever as shown below. Release the latch and remove the recording head release lever.
(Front) Latch
Latch
Recording head release lever (Blue lever)
Scanner frame ASSY (placed upside down)
IV 23
1.12 Recorder & Cutter ASSY
(1) (2) (3) Place the scanner frame ASSY upside down. Remove the screw. Press the warped sections of the scanner frame ASSY outwards at both sides with the tip of a flat screwdriver and take out the recorder & cutter ASSY.
Warped section
Flat screwdriver Recorder & cutter ASSY Warped section
(Rear)
Scanner frame ASSY (placed upside down)
IV 24
1.13 Platen and Cutter Chute
(1) (2) Release the latch of the bushing (R) and pull out the bushing to the right. Pull out the platen gear to the left together with the platen and then lift up.
Latch
Platen
Bushing (R)
Platen gear
Recorder & cutter ASSY (placed rightside up)
(Front)
(3)
Press the two latches of the cutter chute inwards to release and then lift up the cutter chute straight, taking care not to let it catch on other parts.
Cutter chute
Latch
Release the latch.
Recorder & cutter ASSY (placed rightside up)
Latch
(Front)
IV 25
1.14 Recording Head and Cutter Unit
(1) Push down the front edge of the recording head and move it back to the rear to release the tabs from the cutter unit. NOTE: Take care not to lose the three springs placed under the recording head. NOTE: Never disassemble the cutter unit.
Recording head
Recording head harness
Tabs
Cutter unit
(Front) Springs
s Reassembling Notes · · · When installing the recording head, make sure that the three springs are set on the bosses of the cutter unit. Make sure the recording head harness goes through the cutout provided in the cutter unit. It is recommended that you install the platen right after putting the recording head back into place. If not secured by the platen, the recording head could easily come out with any impact.
IV 26
1.15 Hook Switch Sensor Actuator
(1) (2) Press the lower section of the hook switch sensor actuator to the left to release the latch from the main frame, then swing it upwards. Remove the spring.
Hook switch sensor actuator
Hook switch sensor actuator
Latch 1 Latch 2 (Rear)
1.16 Speaker
(1) (2) Disconnect the speaker harness from the main PCB. Lift up the speaker.
Speaker
(Front) Main PCB
IV 27
1.17 Bottom Plate
(1) (2) (3) (4) Place the main frame upside down. Remove the four screws. Slightly lift up the bottom plate and disconnect the grounding terminal. Remove the insulation sheet from the bottom plate.
Positioning hole Checking hole "a" Insulation sheet Adhesive tape Bottom plate
Grounding terminal
Resin PCB support "b"
(Front) Main frame (placed upside down)
s Reassembling Notes · Once removed, the insulation sheet will become unusable and a new one should have to be put back in. When attaching it to the bottom plate, align the rear edge with that of the bottom plate and fit the positioning hole with that provided in the bottom plate, as shown above. Before putting the bottom plate back into place, make sure that the power supply PCB is completely fitted in the resin PCB supports without any gap. After installing the bottom plate, check that resin PCB support "b" of the main frame appears from the checking hole "a" provided in the bottom plate and that the bottom plate is fitted in the main frame without any gap. If the power supply PCB comes into contact with the bottom plate, a short circuit may occur.
·
IV 28
1.18 Main PCB, NCU PCB and Power Supply PCB
If you have already removed the scanner frame ASSY and speaker, slightly lift up the main PCB together with the NCU PCB and then disconnect the power supply harness from the main PCB. If the scanner frame ASSY and speaker are not yet removed, follow the steps below: FAX255/FAX275/FAX-515/HOMEFAX3 (1) (2) Slightly lift up the rear edge of the NCU PCB and disconnect it from the main PCB. Slightly lift up the rear edge of the main PCB and disconnect the following harnesses from the main PCB:
· · · · · · · · Main-panel harness (5-pin) Cutter home position (HP) sensor harness (2-pin) CIS harness (7-pin) Recording head harness (12-pin) Solenoid harness (2-pin) Motor harness (6-pin) Speaker harness (2-pin) Power supply harness (6-pin)
(3)
Lift up the power supply PCB.
Power supply PCB NCU PCB
Power supply harness Main frame (placed upside down)
Main PCB
(Front) NCU connector Main-panel harness (5-pin)
(Rear edge)
P1 P2 SW3 SW2 P7 P3
Cutter HP sensor harness (2-pin) CIS harness (7-pin) Recording head harness (12-pin)
SW1 P4
Speaker harness (2-pin)
PH1 P5 P10 PH2
P9
P8
Main PCB
Solenoid harness (2-pin) Power supply harness (6-pin) Motor harness (6-pin)
IV 29
FAX355MC/FAX375MC/FAX-525DT/FAX-525MC (1) Slightly lift up the rear edge of the NCU PCB and disconnect it from the main PCB.
Power supply PCB NCU PCB
Power supply harness Main frame (placed upside down) Main PCB
(Front)
NCU connector (Rear edge)
P1 P3 SW3 P7 SW2 P8 P9 P10
Battery harness (2-pin) Cutter HP sensor harness (2-pin) Recording head harness (12-pin) CIS harness (7-pin)
P4
Main-mic harness (2-pin) Speaker harness (2-pin)
P6
PH1
P13
P12
P11
PH2 P5
SW1
Main PCB Main-panel harness (5-pin) Motor harness (6-pin) Power supply harness (6-pin) Solenoid harness (2-pin)
IV 30
(2)
Attempt to lift up the main PCB slightly. If it is impossible to lift up the PCB to an extent which allows you to disconnect the harnesses, you may not have unhooked the power supply harness core or cutter HP sensor harness core from bosses "C" or "D," respectively. Remove the ROM cover (refer to Section 1.2) and unhook those cores from bosses "C" and "D" illustrated below.
Boss "C" (Unhook the power supply harness core from here.)
Power supply harness
Cutter HP sensor harness
(Rear)
Main PCB
CIS harness Electrolytic capacitor Motor harness
Boss "D" (Unhook the cutter HP sensor harness core from here.)
Relay "F" Rib "E" Resistors Solenoid harness Recording head harness PE sensor actuator
(3)
Slightly lift up the rear edge of the main PCB and disconnect the following harnesses from the main PCB: · Cutter home position (HP) sensor harness (2-pin) · Main-panel harness (5-pin) · Main-mic harness (2-pin) · Speaker harness (2-pin) · Motor harness (6-pin) · Power supply harness (6-pin) · Solenoid harness (2-pin) · Recording head harness (12-pin) · CIS harness (7-pin)
(4)
Lift up the power supply PCB.
IV 31
s Reassembling Notes · Make sure that the power supply PCB is completely fitted in the resin PCB supports of the main frame. If it is loosely mounted so that it comes into contact with the bottom plate, a short circuit may occur. For the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC: After putting the scanner frame ASSY back onto the main frame, route the harnesses and arrange the cores as follows, referring to the illustration given on the previous page. Hook the power supply harness core on boss "C." Check that the cutter HP sensor harness runs through a core, and then hook the core on boss "D." Push the CIS harness core and the recording head harness core to the left of rib "E" and behind relay "F." Route all these harnesses under boss "D."
·
If any of these harnesses and cores are out of the specified position, the scanner frame ASSY or ROM cover may not be put back into place. · For the FAX355MC/FAX375MC/FAX-525DT/FAX-525MC: After connecting these harnesses, check that neither the electrolytic capacitor nor resistors are tilted towards the PE sensor actuator. If tilted, they may interfere with normal operation of the sensor actuator.
IV 32
1.19 Paper Empty Sensor Actuator
(1) Press the actuator support outwards and lift up the paper empty sensor actuator. The spring also comes off.
Paper empty sensor actuator Actuator support
Main frame (placed upside down)
(Front)
IV 33
2. LUBRICATION
Apply Molykote EM-30L to the lubrication points as illustrated below. For points A, apply a rice-sized pinch of grease (6 mm3). For points B, apply a bean-sized pinch of grease (12 mm3).
[1]
Scanner frame ASSY
Separation roller ASSY
A A A A A
Scanner frame ASSY
A A A A A
A A
A
A A
A
A
IV 34
[2]
Drive unit
NEVER apply grease here.
Drive unit B B Clutch arm B
B
B A A B Arm B
A A Arm A A
A
[3]
Recording head
A
Recording head
IV 35
[4]
Cutter unit
A
A
A
Cutter unit A
IV 36
CHAPTER V.
MAINTENANCE MODE
CHAPTER V. MAINTENANCE MODE
CONTENTS
1. 2. 3.
ENTRY INTO THE MAINTENANCE MODE......................................................... V-1 LIST OF MAINTENANCE-MODE FUNCTIONS ................................................... V-2 DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS ................ V-4 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 EEPROM Parameter Initialization............................................................... V-4 Printout of Scanning Compensation Data ................................................... V-5 ADF Performance Test............................................................................... V-7 Test Pattern 1............................................................................................. V-8 Firmware Switch Setting and Printout ......................................................... V-9 Operational Check of LCD.......................................................................... V-51 Operational Check of Control Panel PCB ................................................... V-51 Sensor Operational Check.......................................................................... V-53 Fine Adjustment of Scanning Start/End Position......................................... V-54
3.10 CIS Scanner Area Setting........................................................................... V-55 3.11 EEPROM Customizing ............................................................................... V-55 3.12 Equipment Error Code Indication................................................................ V-56 3.13 Output of Transmission Log to the Telephone Line ..................................... V-56 3.14 Document Draw Adjustment ...................................................................... V-57
1. ENTRY INTO THE MAINTENANCE MODE
FAX255/FAX275/FAX355MC/FAX375MC: To make the facsimile equipment enter the maintenance mode, press the Function, *, 2, 8, 6, and 4 keys in this order.
Within 2 seconds
FAX-515/FAX-525DT/FAX-525MC/HOMEFAX3: To make the facsimile equipment enter the maintenance mode, press the Menu, *, 2, 8, 6, and 4 keys in this order.
Within 2 seconds
" on the The equipment beeps for approx. one second and displays " LCD, indicating that it is placed in the initial stage of the maintenance mode, a mode in which the equipment is ready to accept entry from the keys. To select one of the maintenance-mode functions listed in Section 2, enter the corresponding 2digit function code with the numerical keys on the control panel. (The details of each maintenance-mode function are described in Section 3.) NOTES: · Pressing the 9 key twice in the initial stage of the maintenance mode makes the equipment exit from the maintenance mode, restoring it to the standby state. · Pressing the Stop button after entering only one digit restores the equipment to the initial stage of the maintenance mode. · If an invalid function code is entered, the equipment resumes the initial stage of the maintenance mode.
V-1
2. LIST OF MAINTENANCE-MODE FUNCTIONS
Maintenance-mode Functions
Function Code 01 02 03 04 05 06 07 08 09 10 11 12 13 ADF* Performance Test Test Pattern 1 Firmware Switch Setting
Function EEPROM Parameter Initialization
Reference Subsection (Page) 3.1 (V-4)
Printout of Scanning Compensation Data
3.2 (V-5)
3.3 (V-7) 3.4 (V-8) 3.5 (V-9) 3.5 (V-50) 3.6 (V-51) 3.7 (V-51)
Printout of Firmware Switch Data Operational Check of LCD Operational Check of Control Panel PCB (Check of Keys and Buttons) Sensor Operational Check Fine Adjustment of Scanning Start/End Position CIS Scanner Area Setting EEPROM Customizing Equipment Error Code Indication Output of Transmission Log to the Telephone Line EEPROM Parameter Initialization (except the telephone number storage area) Exit from the Maintenance Mode Document Draw Adjustment
32 54 55 74 82 87 91 99 -----
3.8 (V-53) 3.9 (V-54) 3.10 (V-55) 3.11 (V-55) 3.12 (V-56) 3.13 (V-56) 3.1 (V-4) ---- (V-1) 3.14 (V-57)
* ADF: Automatic document feeder
V-2
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IMPORTANT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Basically, the maintenance-mode functions listed on the previous page should be accessed by service personnel only. However, you may allow end users to access some of these under the guidance of service personnel (e.g., by telephone). The user-accessible functions (codes 10, 11, 12, 82, 87 and 91) are shaded in the table given on the previous page. Function code 10 accesses the firmware switches WSW01 to WSW37, each of which has eight selectors. You should not allow end users to access all of those selectors, but you may allow them to access user-accessible selectors which are shaded in the firmware switch tables in Subsection 3.5. The service personnel should instruct end users to follow the procedure given below. (1) FAX255/FAX275/FAX355MC/FAX375MC: Press the Function and Mode keys in this order. FAX-515/FAX-525DT/FAX-525MC/HOMEFAX3: Press the Menu and Mode keys in this order. The LCD clears the current display. NOTE: The Mode key is inoperable during standby for redialing and timer. (2) Press the 0 key. (3) Enter the desired function code (10, 11, 12, 82, 87, or 91) with the numerical keys. For function code 10, access the desired firmware switch according to the operating procedure described in Subsection 3.5. (4) To make the equipment return to the standby state, press the Stop key. FAX255/FAX275/FAX355MC/FAX375MC
FAX-515/FAX-525DT/FAX-525MC/HOMEFAX3
V-3
3. DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS
3.1 n EEPROM Parameter Initialization Function The equipment initializes the parameters, user switches, and firmware switches registered in the EEPROM, to the initial values. Entering the function code 01 initializes all of the EEPROM areas, but entering 91 does not initialize some areas, as listed below. Function code Data item Maintenance-mode functions User switches Firmware switches Remote activation code Activity report Distinctive ringing patterns registered Station ID data Outside line number Remote access code FAX forwarding/paging Telephone function registration One-touch dialing Speed dialing Group dialing EEPROM customizing code (4-digit) All of these will be initialized These will not be initialized
01
91
These will be initialized
This will not be initialized. (Note that the first digit of the 4-digit code will be initialized to "0." If the code is 1001, for example, it will be initialized to 0001.)
NOTE: If you replace the main PCB with one used for other facsimile equipment, carry out this procedure and then customize the EEPROM (maintenance-mode function code 74 in Section 3.11).
n
Operating Procedure (1) Press the 0 and 1 keys (or the 9 and 1 keys according to your need) in this order in the initial stage of the maintenance mode. The "PARAMETER INIT" will appear on the LCD. (2) Upon completion of parameter initialization, the equipment returns to the initial stage of the maintenance mode.
V-4
3.2 n
Printout of Scanning Compensation Data Function The equipment prints out the white and black level data for scanning compensation.
n
Operating Procedure Do not start this function merely after powering on the equipment but start it after carrying out a sequence of scanning operation. Unless the equipment has carried out any scanning operation, this function cannot print out correct scanning compensation data. This is because at the start of scanning operation, the equipment initializes white and black level data and takes in the scanning compensation reference data. (1) Press the 0 and 5 keys in this order in the initial stage of the maintenance mode. The "WHITE LEVEL 1" will appear on the LCD. (2) The equipment prints out the scanning compensation data list containing the following: a) b) c) d) e) f) g) h) i) j) k) White level data (208 bytes) Black level data (1 byte) Initial clamp PWM value (1 byte) Clamp PWM value (1 byte) Compensation data for background color (1 byte) Limitation value for compensation data (1 byte) Initial LED light intensity value (1 byte) LED light intensity value (1 byte) LED light intensity value on the platen and documents (2 bytes) Threshold value on the platen (1 byte) Document rear sensor adjustment value (1 byte