Brother CP1800 Service Manual Page 1

COPYBOARDSERVICE MANUALMODEL: CP1800/CP2000/CB200

II - 12.1 OVERVIEW

II - 22.2 MECHANISMSThe machine consists of the following three mechanisms and sensors:n Scanner Mechanism (Copyboard) - Scrolling the copyboard scree

II - 3

II - 42.2.2 Thermal printing mechanismThe thermal printing mechanism in the printer consists of the thermal recording head, platen, anti-curl system (

II - 52.2.3 SensorsThis machine has three sensors--PE/cover sensor (photosensor), thermistor in the thermalrecording head, and left-hand CIS unit acti

II - 62.3 CONTROL ELECTRONICS

CHAPTER III.DISASSEMBLY/REASSEMBLY ANDLUBRICATION

iCHAPTER III. DISASSEMBLY/REASSEMBLY AND LUBRICATIONCONTENTS3.1 DISASSEMBLY/REASSEMBLY...

ii[ 3 ] Removing the lower pipe and WB motor ... III-29Removing the lower corner plates and lower frame ..

III - 13.1 DISASSEMBLY/REASSEMBLYnn Safety PrecautionsTo prevent the creation of secondary problems by mishandling, observe the following precautionsd

© Copyright Brother 2000All rights reserved.No part of this publication may be reproduced in any form or by any means without permission in writingfro

III - 2nn Tightening Torque ListLocation Screw type Q'ty Tightening torque (N•m)PRINTERPlaten stopper Taptite, pan B M4x20 1 0.69 ±0.1Platen fram

III - 3nn PreparationPrior to proceeding to the disassembly procedure,(1) Unplug- the AC cord and AC adapter and- the optional PC interface cable if c

III - 4nn Disassembly Order Flow

III - 53.1.1 Disassembly of Printer[ 1 ] Separating the paper compartment cover from the printer base unit(1) Open the paper compartment cover by pull

III - 6nn Reassembling notesWhen reinstalling the printer base unit to the paper compartment cover:1) Hold the printer base unit at a right angle fro

III - 72) Set the retaining ring (E5) onto the shaft of the platen frame R.3) Hook the hinge spring onto the shoulder screw.

III - 8[ 2 ] Removing the components from the paper compartment coverRemoving the paper guide bar and platen(1) If the printer base unit has not been

III - 9Removing 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

III - 10Removing the paper stoppers and platen frames(8) Remove two screws from the platen frame R and take out the platen frame R together withthe hi

III - 11nn Reassembling notes• Before reinstalling the platen frames to the paper compartment cover, assemble the platenframe R (or L), paper stopper

PREFACEThis publication is a Service Manual covering the specifications, construction, theory of operation,and maintenance of the Brother copyboard.

III - 12[ 3 ] Removing the components from the printer base unitRemoving the printer support(1) Take off the printer support from the printer base uni

III - 13Removing 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 PC

III - 14Removing the main PCB and its bracket(7) Disconnect the following harnesses from the main PCB while holding down the main PCB:- Recording head

III - 15(8) Remove the PC interface cover if mounted.(9) Remove two screws and take out the main PCB.

III - 16(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:

III - 17Removing 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 pr

III - 18nn Reassembling notes• When connecting the printer motor harness, connect its end which is far from the ferrite core tothe motor and its end

III - 19Removing the head protector, recording head ASSY, recorder frame, and PE/cover sensorPCB(17) While pulling up the left end of the head protect

III - 20(21) Remove two screws from the recorder frame.(22) Slightly lift up the recorder frame and disconnect the sensor harness from the PE/coversen

III - 21• After reassembly, make sure that the harnesses are routed as shown below.Removing the filmsNOTE: Once removed, the films will become unusabl

CHAPTER I.GENERAL DESCRIPTION

III - 223.1.2 Disassembly of Copyboard[ 1 ] Removing the CIS unitsRemoving the upper cover, corner covers, CIS protector, and upper support frame(1) R

III - 23Removing 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

III - 24(7) Remove three CIS units (two bind B taptite screws, M3x8 from each CIS unit) from the CISframe.nn Reassembling notes• If any one of the th

III - 25• If you replace the CIS unit set, set the scanning compensation parameters stored in theEEPROM (Function code 55) as described in Subsection

III - 26[ 2 ] Removing the relay PCB and printer-copyboard interface cableRemoving the lower cover, corner covers, CIS protector, and lower support fr

III - 27Removing the WB motor harness, relay PCB, and printer-copyboard interface cable(5) Disconnect the WB motor harness from the relay PCB and the

III - 28(8) Turn the copyboard upside down.(9) On the grip, straighten the cable clip and release the printer-copyboard interface cable.(10) Remove th

III - 29nn Reassembling notes• Before connecting each of the CIS harnesses to the relay PCB, be sure to fit its ferrite coreover the cable clip. As

III - 30(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

III - 31(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

CHAPTER I. GENERAL DESCRIPTIONCONTENTS1.1 MACHINE OUTLINE...

III - 32(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 directio

III - 33Removing the WB motor(9) Remove the WB motor (two pan screws with S/P washer, M3x6DB) from the lower pipe holderL.nn Reassembling notes• When

III - 34

III - 35[ 4 ] Replacing the white sheet (copyboard screen) and the sheet backup board(1) Remove the six screws (three cup S taptite screws, M3x10 from

III - 36(3) Paste two black HP marks onto the ruled side of a new white sheet as specified below.

III - 37(4) As illustrated below, put the new white sheet on the old one with the ruled side facing up andblack HP marks facing towards the left.(5) T

III - 38(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 s

III - 39nn Reassembling notes• When sliding the side covers back into place, take care not to damage the CIS harnesses.• When securing the side cover

III - 403.2 LUBRICATIONApply the specified lubricant to the lubrication points as shown below.Lubricant type (Manufacturer): Molykote grease EM-30L or

III - 41[ 3 ] Lower pipe holder L[ 4 ] Lower pipe holder R

I - 11.1 MACHINE OUTLINE1.1.1 External Appearance and WeightThe figure below shows the machine appearance and approximate dimensions.CP2000/CB200 CP18

III - 42[ 5 ] Upper pipe shaft

CHAPTER IV.MAINTENANCE MODE

CHAPTER IV. MAINTENANCE MODECONTENTS4.1 ENTRY INTO THE MAINTENANCE MODE... IV-14.2 LIST OF MAI

IV - 14.1 ENTRY INTO THE MAINTENANCE MODETo make the machine enter the maintenance mode:(1) Open the paper compartment cover. The PAPER LED comes on.

IV - 24.2 LIST OF MAINTENANCE-MODE FUNCTIONSMaintenance-mode FunctionsEntryPapercompartmentcoverPress: FunctionRefer to:COPY ALL key Setting of the sc

IV - 34.3 DETAILED DESCRIPTION OFMAINTENANCE-MODE FUNCTIONS4.3.1 Setting of the scanning compensation parameters stored in the EEPROM (involving homep

IV - 44.3.2 Scanning contrast adjustment [Function code 07]nn FunctionThis function allows you to adjust the scanning contrast to five levels from 0

IV - 54.3.3 Automatic setting of the scanning compensation parameters stored in the EEPROM[Function code 02]nn FunctionThis function allows you to mak

IV - 64.3.4 Dump (including page length setting, error code, and scanning compensation data)[Function code 05]nn FunctionThis function prints out the

IV - 7Dump Lista)b)c)d)e)f)g)h)i)

I - 21.2 SPECIFICATIONSModel CP2000 CB200 CP1800MACHINE SPECIFICATIONSINPUTScreen Size (H) x (W) 35.43 x 23.62 inches900 x 600 mmEffective Scanning A

IV - 84.3.5 Test pattern print [Function code 09]nn FunctionThis function, much like the copying function, prints out a test pattern to allow you to

IV - 94.3.6 Operational check of keys and LEDs on the control panel [Function code 13]nn FunctionThis function allows you to check the keys and LEDs

IV - 10(5) Make sure paper is loaded and close the paper compartment cover. Check that both theERROR and PAPER LEDs go off.(6) To set A4 size, press

CHAPTER V.ERROR INDICATION ANDTROUBLESHOOTING

CONTENTS5.1 ERROR INDICATION ... V-15.1.1 Intermittent Errors.

V - 15.1 ERROR INDICATIONTo help the user or the service personnel promptly locate the cause of a problem (if any), themachine incorporates the self-d

V - 25.1.2 Fatal ErrorsListed below are fatal errors. If a fatal error occurs, the machine may fail to store the error codeinto the EEPROM or output

V - 35.2 TROUBLESHOOTING5.2.1 IntroductionThis section gives the service personnel some of the troubleshooting procedures to be followed ifan error or

V - 4SampleRead This FirstUser Setup Guide for Repaired MachineThank you very much for your patronage. We have repaired your printer and are sending

V - 55.2.3 PrecautionsBe sure to observe the following to prevent the secondary troubles from happening:(1) Always unplug the AC cord from the outlet

CHAPTER II.THEORY OF OPERATION

V - 65.2.5 Troubleshooting Procedures[ 1 ] Control panel relatedTrouble Check:(1) The POWER LED does not comeon.l Power connection to the printer.(Che

V - 7[ 2 ] Copyboard screen scrolling relatedTrouble Check:(1) Copyboard screen not scrolled. l Printer-copyboard interface cablel Relay PCBl WB motor

V - 8[ 4 ] Copy-image relatedIf the copied image has any problem in quality, first check whether the problem is due to a scannerfailure or printer fai

V - 9Trouble Action to be taken(3) All red(For models supporting red& black copying)At the scannerl Check the following components:- CIS units and

V - 10Trouble Action to be taken(6) Black vertical streaks At the scannerl Set the scanning compensation parameters in the EEPROM(Function code 55 in

V - 11Trouble Action to be taken(11) Contrast uneven At the scannerl Check that the CIS units have been replaced with new onesas a set of three units

CP1800/CP2000/CB200APPENDIXCircuit DiagramsA. Main PCBB. Relay PCB

AMain PCB 1/4

AMain PCB 2/4

AMain PCB 3/4

CHAPTER II. THEORY OF OPERATIONCONTENTS2.1 OVERVIEW...

AMain PCB 4/4

BRelay PCB

Mar. ’00SM5B1101ÀPrinted in Japan