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PREFACE This publication is a Service Manual covering the specifications, construction, theory of operation, and maintenance of the Brother copyboard. It includes information required for field troubleshooting and repair--disassembly, reassembly, and lubrication--so that service personnel will be able to understand machine function, to rapidly repair the machine and order any necessary spare parts.
1.1 MACHINE OUTLINE 1.1.1 External Appearance and Weight The figure below shows the machine appearance and approximate dimensions. CP2000/CB200 CP1800 Weight: Machine proper 14.5 kg (32.0 lbs.) 11.8 kg (26.0 lbs.) In package 23.0 kg (50.7 lbs.) 19.5 kg (43.0 lbs.) 1.1.2 Components The machine consists of the following major components: I - 1...
1.2 SPECIFICATIONS Model CP2000 CB200 CP1800 MACHINE SPECIFICATIONS INPUT Screen Size (H) x (W) 35.43 x 23.62 inches 900 x 600 mm Effective Scanning Area (H) x (W) 34.57 x 23.39 inches 878 x 594 mm Ratio of Scanning Area 96.60% Scanning Method Same as left.
2.2 MECHANISMS The machine consists of the following three mechanisms and sensors: n Scanner Mechanism (Copyboard) - Scrolling the copyboard screen - Scanning the copyboard screen n Thermal Printing Mechanism (Printer) - Printing image drawn on the copyboard screen and feeding recording paper n Easel Stand* n Sensors...
2.2.2 Thermal printing mechanism The thermal printing mechanism in the printer consists of the thermal recording head, platen, anti- curl system (ACS) plate, and paper compartment cover. The heat-sensitive recording paper is routed between the paper guide bar and ACS plate to the recording head which prints onto the paper pressed by the platen according to image signals issued from the main PCB.
2.2.3 Sensors This machine has three sensors--PE/cover sensor (photosensor), thermistor in the thermal recording head, and left-hand CIS unit acting as a home position detector of the copyboard screen. The PE/cover sensor is located on the PE/cover sensor PCB secured to the recorder frame. It detects whether the recording paper is present or the paper compartment cover is closed.
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CHAPTER III. DISASSEMBLY/REASSEMBLY AND LUBRICATION...
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CHAPTER III. DISASSEMBLY/REASSEMBLY AND LUBRICATION CONTENTS DISASSEMBLY/REASSEMBLY ................III-1 Safety Precautions....................III-1 Tightening Torque List ..................III-2 Preparation......................III-3 How to Access the Object Component ..............III-3 Disassembly Order Flow ..................III-4 3.1.1 Disassembly of Printer................. III-5 [ 1 ] Separating the paper compartment cover from the printer base unit ..III-5 [ 2 ] Removing the components from the paper compartment cover .....
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[ 3 ] Removing the lower pipe and WB motor ..........III-29 Removing the lower corner plates and lower frame ....... III-29 Removing the pipe holder stoppers, pipe spacer L, lower pipe and its holders....................III-30 Removing the WB motor ............... III-33 [ 4 ] Replacing the white sheet (copyboard screen) and the sheet backup board..................
3.1 DISASSEMBLY/REASSEMBLY n n Safety Precautions To prevent the creation of secondary problems by mishandling, observe the following precautions during maintenance work. (1) Turn the power off and unplug the AC cord from the power outlet before accessing parts or units inside the machine.
n n Tightening Torque List Location Screw type Q'ty Tightening torque (N m) PRINTER Platen stopper Taptite, pan B M4x20 0.69 0.1 Platen frames R and L Taptite, bind B M4x12 0.98 0.2 Printer support Taptite, cup S M3x6 0.69 0.1 Taptite, bind B M4x12 0.98 0.2 Sub cover...
Preparation Prior to proceeding to the disassembly procedure, (1) Unplug - the AC cord and AC adapter and - the optional PC interface cable if connected. (Not shown below.) (2) Remove the tray and recording paper. (3) CP2000/CB200: Take down the assembly of the copyboard and printer from the easel stand. (4) Disconnect the printer-copyboard interface cable from the printer and then remove the four decorative screws to separate the printer from the copyboard.
3.1.1 Disassembly of Printer [ 1 ] Separating the paper compartment cover from the printer base unit (1) Open the paper compartment cover by pulling up its latch. • (2) Pull the paper guide bar in the direction of arrow and unhook the hinge spring from the ‚...
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n n Reassembling notes When reinstalling the printer base unit to the paper compartment cover: 1) Hold the printer base unit at a right angle from the paper compartment cover and fit it over the shafts of the platen frames L and R. When doing this, take care not to bring the paper guide bar inside the tabs of the ACS plate or not to bring the films inside the paper compartment cover.
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2) Set the retaining ring (E5) onto the shaft of the platen frame R. 3) Hook the hinge spring onto the shoulder screw. III - 7...
[ 2 ] Removing the components from the paper compartment cover Removing the paper guide bar and platen (1) If the printer base unit has not been removed, open the paper compartment cover by pulling up its latch. (2) Remove the retaining ring (E2) from each end of the paper guide bar, then remove the paper guide bar from the paper stoppers R and L.
Removing the lock shaft and paper compartment latch (6) At the right end of the lock shaft, remove the lock lever by unlatching the pawls in the • ‚ direction of arrows and pulling the lock lever outwards (arrow ) and then unhook the lock lever spring from the platen frame R.
Removing the paper stoppers and platen frames (8) Remove two screws from the platen frame R and take out the platen frame R together with the hinge spring, paper stopper R and its spring. (9) Remove two screws from the platen frame L and take out the platen frame L together with the paper stopper L and its spring.
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n n Reassembling notes • Before reinstalling the platen frames to the paper compartment cover, assemble the platen frame R (or L), paper stopper, and stopper spring together as follows: As illustrated below, first fit the stopper spring over the boss of the paper stopper. Insert the •...
[ 3 ] Removing the components from the printer base unit Removing the printer support (1) Take off the printer support from the printer base unit by removing the four screws. NOTE: After removing the printer support, take care not to bend the grounding spring R. III - 12...
Removing the sub cover and control panel PCB (2) Take off the sub cover by removing the screw. (3) Disconnect the panel harness from the main PCB. Only when you need to replace the panel cover or control panel PCB, perform steps (4) through (6).
Removing the main PCB and its bracket (7) Disconnect the following harnesses from the main PCB while holding down the main PCB: - Recording head signal harness - Sensor harness - Panel harness (if connected) - Printer motor harness - Recording head power harness III - 14...
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(8) Remove the PC interface cover if mounted. (9) Remove two screws and take out the main PCB. III - 15...
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(10) Remove the grounding screw from the underside of the printer base unit. (11) Remove two screws from the PCB bracket and take it out. NOTE: When removing the PCB bracket, take care not to drop the grounding spring L. n n Reassembling notes •...
Removing the drive unit and hinge plate L (12) Remove two screws from the drive unit. (13) Slightly lift up the drive unit and disconnect the printer motor harness from the motor. NOTE: After removing the drive unit, take care not to drop the grounding spring L. (14) Take off the motor cover by removing the screw.
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n n Reassembling notes • When connecting the printer motor harness, connect its end which is far from the ferrite core to the motor and its end near the core to the main PCB as illustrated on the previous page. •...
Removing the head protector, recording head ASSY, recorder frame, and PE/cover sensor • „ (17) While pulling up the left end of the head protector, unhook latches through in this order with a small flat screwdriver as illustrated below. (18) Push down both ends of the recording head ASSY and move it to the rear to release the tabs from the cutouts provided in the recorder frame.
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(21) Remove two screws from the recorder frame. (22) Slightly lift up the recorder frame and disconnect the sensor harness from the PE/cover sensor PCB. (23) Take off the PE/cover sensor PCB by removing the screw. (24) Remove the sensor actuator as shown below. n n Reassembling notes •...
• After reassembly, make sure that the harnesses are routed as shown below. Removing the films NOTE: Once removed, the films will become unusable and new ones will have to be put back in. (25) Remove the films as shown below. n n Reassembling notes •...
3.1.2 Disassembly of Copyboard [ 1 ] Removing the CIS units Removing the upper cover, corner covers, CIS protector, and upper support frame (1) Remove the upper cover (three shoulder screws). (2) Remove the corner covers A and B (two flat S screws, M3x10 from each cover). (3) Remove the CIS protector (two cup S taptite screws, M3x10).
Removing the CIS frame and CIS units (5) Remove the CIS frame (two cup S taptite screws, M3x10 from its each end). (6) Pivot up the CIS frame as shown below, remove the three harness sponges, disconnect the three CIS harnesses from the CIS units, and then lift up the CIS frame. NOTE: When handling the CIS frame, hold it as shown below, taking care not to touch the glass prism bars or transparent sheets.
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(7) Remove three CIS units (two bind B taptite screws, M3x8 from each CIS unit) from the CIS frame. n n Reassembling notes • If any one of the three CIS units is defective, replace the three-unit set with a new set. •...
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• If you replace the CIS unit set, set the scanning compensation parameters stored in the EEPROM (Function code 55) as described in Subsection 4.3.1. • When securing the upper support frame to the side frames, sandwich the spacers between them as shown on page III-22.
[ 2 ] Removing the relay PCB and printer-copyboard interface cable Removing the lower cover, corner covers, CIS protector, and lower support frame (1) Remove the lower cover (three shoulder screws). (2) Remove the corner covers A and B (two flat S screws, M3x10 from each cover). (3) Remove the CIS protector (two cup S taptite screws, M3x10).
Removing the WB motor harness, relay PCB, and printer-copyboard interface cable (5) Disconnect the WB motor harness from the relay PCB and the WB motor. On the relay PCB, straighten the cable clip and pull out the ferrite core of the harness. Then take the WB motor harness out of the cable clamps.
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(8) Turn the copyboard upside down. (9) On the grip, straighten the cable clip and release the printer-copyboard interface cable. (10) Remove the PCB support (two cup S taptite screws, M3x10) together with the printer- copyboard interface cable and the relay PCB. (11) Remove two screws (two cup S taptite screws, M3x6) from the relay PCB and disconnect the printer-copyboard interface cable.
n n Reassembling notes • Before connecting each of the CIS harnesses to the relay PCB, be sure to fit its ferrite core over the cable clip. As shown on page III-27, in the order of the blue, yellow, and red CIS harnesses, fit their ferrite cores over the cable clip and then connect those harnesses to the relay PCB.
(2) Remove the lower frame (one washer S taptite screw, M3x10 and two bind B taptite screws, M3x8) and then pull it out. NOTE: When placing the copyboard rightside up after removing the lower frame, apply any pad under the copyboard to protect the grip as shown below. Removing the pipe holder stoppers, pipe spacer L, lower pipe and its holders (3) Remove two pipe holder stoppers (one cup S taptite screw, M3x8 from each stopper).
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(4) Unhook the pipe holder springs from the lower pipe holders R and L. • (5) While scrolling the white sheet (copyboard screen), slide it in the direction of arrow so that the pipe spacer L can appear. ‚ (6) Remove the pipe spacer L in the direction of arrow III - 31...
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• (7) Press the pipe gear in the direction of arrow and disengage it from the lower pipe holder L, ‚ then pull out the lower pipe in the direction of arrow (8) Take out the lower pipe holders R and L in the direction of the arrows. III - 32...
Removing the WB motor (9) Remove the WB motor (two pan screws with S/P washer, M3x6DB) from the lower pipe holder n n Reassembling notes • When securing the WB motor to the lower pipe holder L, first tighten a screw in the smaller screw hole.
[ 4 ] Replacing the white sheet (copyboard screen) and the sheet backup board (1) Remove the six screws (three cup S taptite screws, M3x10 from each side cover) from the side covers and slide them as shown below. NOTE: When sliding the side covers, take care not to damage the CIS harnesses. (2) Cut the white sheet to be replaced with scissors.
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(3) Paste two black HP marks onto the ruled side of a new white sheet as specified below. III - 36...
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(4) As illustrated below, put the new white sheet on the old one with the ruled side facing up and black HP marks facing towards the left. (5) Tape the edge of the new white sheet to the cut edge of the old one. (6) Pull the other edge of the old white sheet in the direction of the black arrow.
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(8) As illustrated below, fit both edges of the new white sheet to each other and put weights (which should be covered with felt or something soft). (9) Tape the seam of the white sheet. NOTE: Use 10-mm-wide white sticky tape, 631S-50 (Teraoka Seisakusho Co., Ltd.) or its equivalent.
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n n Reassembling notes • When sliding the side covers back into place, take care not to damage the CIS harnesses. • When securing the side covers, first temporarily tighten the three screws at each side cover. After securing the corner covers, center the side covers relative to those corner covers and then tighten those screws firmly.
3.2 LUBRICATION Apply the specified lubricant to the lubrication points as shown below. Lubricant type (Manufacturer): Molykote grease EM-30L or EM-30LG (Dow Corning) Lubricant amount: Rice-sized pinch of grease (6 mm [ 1 ] Joints between the platen shaft and its bushings [ 2 ] WB motor related gears on the lower pipe holder L III - 40...
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CHAPTER IV. MAINTENANCE MODE CONTENTS ENTRY INTO THE MAINTENANCE MODE............IV-1 LIST OF MAINTENANCE-MODE FUNCTIONS ............ IV-2 DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS ....IV-3 4.3.1 Setting of the scanning compensation parameters stored in the EEPROM (involving home positioning of the copyboard screen) [Function code 55]..IV-3 4.3.2 Scanning contrast adjustment [Function code 07]..........
4.1 ENTRY INTO THE MAINTENANCE MODE To make the machine enter the maintenance mode: (1) Open the paper compartment cover. The PAPER LED comes on. (2) Hold down the following two keys at the same time for at least 15 seconds: - COPY ALL and FEED keys or - COPY and FEED keys Which key combination should be selected depends upon the maintenance-mode functions...
4.2 LIST OF MAINTENANCE-MODE FUNCTIONS Maintenance-mode Functions Paper Refer to: Entry Press: Function compartment cover COPY ALL key Setting of the scanning Sect. compensation parameters stored in 4.3.1 the EEPROM (involving home positioning of the copyboard screen) [Function code 55] Opened COPY key Scanning contrast adjustment...
4.3 DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS 4.3.1 Setting of the scanning compensation parameters stored in the EEPROM (involving home positioning of the copyboard screen) [Function code 55] Function The machine performs home-positioning of the copyboard screen (using black HP marks on the screen) and sets the scanning compensation parameters registered in the EEPROM.
4.3.2 Scanning contrast adjustment [Function code 07] Function This function allows you to adjust the scanning contrast to five levels from 0 to 4 for monochrome scanning. The contrast level refers to the threshold value of brightness to be applied for 2-value quantization when the CIS scans images drawn on the copyboard screen.
4.3.3 Automatic setting of the scanning compensation parameters stored in the EEPROM [Function code 02] Function This function allows you to make automatic setting of the scanning compensation parameters so that the machine will automatically start home-positioning of the copyboard screen and set the scanning compensation parameters stored in the EEPROM as described in Section 4.3.1 at the next powering-on time.
4.3.4 Dump (including page length setting, error code, and scanning compensation data) [Function code 05] Function This function prints out the following data: - Page length setting for recording paper - Error code - Scanning compensation data Operating Procedure (1) Open the paper compartment cover and hold down the COPY ALL and FEED keys for 15 seconds.
4.3.5 Test pattern print [Function code 09] Function This function, much like the copying function, prints out a test pattern to allow you to check for record data missing or print quality. Operating Procedure (1) Open the paper compartment cover and hold down the COPY ALL and FEED keys for 15 seconds.
4.3.6 Operational check of keys and LEDs on the control panel [Function code 13] Function This function allows you to check the keys and LEDs on the control panel. Operating Procedure (1) Open the paper compartment cover and hold down the COPY and FEED keys for 15 seconds.
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(5) Make sure paper is loaded and close the paper compartment cover. Check that both the ERROR and PAPER LEDs go off. (6) To set A4 size, press the COPY ALL key. To set letter size, press the FEED key. Both the ERROR and PAPER LEDs come on.
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CHAPTER V. ERROR INDICATION AND TROUBLESHOOTING...
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CONTENTS 5.1 ERROR INDICATION ................... V-1 5.1.1 Intermittent Errors ..................V-1 5.1.2 Fatal Errors....................V-2 5.1.3 Main PCB Uncustomized Error ..............V-2 5.2 TROUBLESHOOTING..................V-3 5.2.1 Introduction....................V-3 5.2.2 Locating a printer or copyboard failure ---Important--- ......V-3 Read This First User Setup Guide for Repaired Machine ......V-4 5.2.3 Precautions....................
5.1 ERROR INDICATION To help the user or the service personnel promptly locate the cause of a problem (if any), the machine incorporates the self-diagnostic functions which show intermittent errors and fatal errors. 5.1.1 Intermittent Errors If an intermittent error occurs, the machine stores the error code into the EEPROM on the main PCB.
5.1.2 Fatal Errors Listed below are fatal errors. If a fatal error occurs, the machine may fail to store the error code into the EEPROM or output it to the recording paper. To signal the fatal error, therefore, the machine employs flash codes using the ERROR and PAPER LEDs in the following way to indicate the error code in eight bits with the MSB first.
5.2 TROUBLESHOOTING 5.2.1 Introduction This section gives the service personnel some of the troubleshooting procedures to be followed if an error or malfunction occurs with the machine. It is impossible to anticipate all of the possible problems which may occur in future and determine the troubleshooting procedures, so this section covers some sample problems.
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Sample Read This First User Setup Guide for Repaired Machine Thank you very much for your patronage. We have repaired your printer and are sending it back to you. To ensure you get the most out of the performance in the machine, follow all instructions given below.
5.2.3 Precautions Be sure to observe the following to prevent the secondary troubles from happening: (1) Always unplug the AC cord from the outlet when removing the covers and PCBs, adjusting the mechanisms, or conducting continuity testing with a circuit tester. (2) When disconnecting the connectors, do not pull the lead wires but hold the connector housings.
5.2.5 Troubleshooting Procedures [ 1 ] Control panel related Trouble Check: (1) The POWER LED does not come Power connection to the printer. (Check the AC cord and adapter's DC cord for disconnection or breakage. Check the AC adapter itself.) Main PCB (DC/DC converter circuit) Panel harness Control panel PCB...
[ 2 ] Copyboard screen scrolling related Trouble Check: (1) Copyboard screen not scrolled. Printer-copyboard interface cable Relay PCB WB motor and its harness Pipe holders and their related parts (Are the gears broken?) (2) No home positioning of the Set the scanning compensation parameters stored in copyboard screen.
[ 4 ] Copy-image related If the copied image has any problem in quality, first check whether the problem is due to a scanner failure or printer failure. Print out a test pattern by using the maintenance-mode function (Function code 09 in Subsection 4.3.5) and check for the print quality. If the printed test pattern has no problem, the scanner is faulty;...
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Trouble Action to be taken (3) All red At the scanner (For models supporting red Check the following components: & black copying) - CIS units and their harnesses - Relay PCB - Main PCB At the printer Check the following components: - Thermal recording head - Recording head signal harness - Main PCB...
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Trouble Action to be taken (6) Black vertical streaks At the scanner Set the scanning compensation parameters in the EEPROM (Function code 55 in Subsection 4.3.1). Clean the copyboard screen around the two black HP marks. Clean the CIS units. Check the CIS unit(s).
Trouble Action to be taken (11) Contrast uneven At the scanner Check that the CIS units have been replaced with new ones as a set of three units. Even if any one of the three CIS units is defective, replace the three-unit set with a new set. (12) Scrambled image Check that the three CIS harnesses are joined to the correct connectors on the relay PCB.
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CP1800/CP2000/CB200 APPENDIX Circuit Diagrams A. Main PCB B. Relay PCB...