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1. DISASSEMBLYAND REPLACEMENT (#1~ #22) 2. PARTS LIST 3. P.C.B. CIRCUIT DIAGRAM 4. C.P.U BLOCK DIAGRAM AND PIN ASSIGNMENT 5. MEASUREMENT VOLTAGE CHECK MOTOR OPERATION CHECK PRINT HEAD RESISTANCE MEASUREMENT SENSORS CIRCUIT CPU OPERATION
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DISASSEMBLYANDREPLACEMNET 1 1. Removefrontcase. 2. Replacequartzoseclock. 3. ReplaceRibbon. 4. RemovePrintHead. 5. ReplaceFuse. 6. Removebackcase. 7. RemoveoperationPanelblock. 8. Removethe LCD. 9. RemovetheRibbonDriveShaft. 10. Removingto LFreductiongears,midgearandrollergear. 11. Removingthepaperfeedshaftandbearings. 12. Removethecamgear,reductiongear,changegearandgearguide. 13. Removetheribboncam. 14. Removetheleadscrewassembles,platenbearingsandleadscrewtop. 15. Removingthecardinletandspacer
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1 Remove front case 1-1 1-2 1-3 1.Removetwoscrews M3 8 2.Twopressplaceand pushoutdirection 3.Removefront case
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2.ReplacequartzoseClock 2-1 2-2 2-3 2-4 2-5 2-6
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2-7 2-8 2-9 2-10 1.Remmove onescrewST3 7 (2-1) 2.Removeactivecover(2-2 2-3 2-4) 3.Removetime faceAcryl 2-5 4.Removesecond hand 2-6 5.Remove minutehand 2-7 6.Removehourhand 2-8 7.Removeonescrew 2-9 8.Removequartzoseclock 2-10
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3.ReplaceRibbon 3-1 3-2 3-3 3-4 1. Remove and discardtwo pin clip. 3-1 3-2 2. Pull theribboncassettebyhand. 3-3 3-4 3. LoadnewRibbon 4. Loadtwopin and clipand frontcase.
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4.Remove PrintHead 4-1 4-2 4-3 4-4 4-5 4-6
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1.RemovetheFPCguideusing astandardtype screwdriver.(4-2) 2.DisconnecttheFPCcablefromtheconnector(PCN8).(4-3 4-4) 3.Pulltheheadtoward the frontbyhand. 4-5 4.Leftitto remove. 4-6
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5. ReplaceFuse 5-1 5-2 5-3 5-4 1.RemoveonescrewM3 6(5-1) 2.Openthesmallbackcover(5-2) 3.Removethedamage fuse(5-3) 4.Replaceanewfuseinto rightplace 5.Closethesmall back coverandinstallthescrew(5-4)
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6.Remove back case 6-1 6-2 6-3 6-4 1.RemovefourscrewsM4 10(6-2) 2.Remove the back case by hand and disconnect operation panel block cable from theconnectoronoperation panelblock.(6-3 6-4)
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7.Remove operationPanelblock 7-1 7-1 7-2 7-3 1.Removethreescrews ST3 7 7-2 2.Removetheoperationpanelblock 7-3
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8.Remove theLCD 8-1 8-2 8-3 1.Disconnect the LCD cable from the connector (LCN10) on the 2000UL PCB assembly.(8-1) 2.DisconnecttheLCDcable fromtheconnectoron the 2003APCBassembly.(8-1) 3.Removetwoscrews.(8-2) 4.RemovetheLCD.(8-3)
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9.Remove theRibbon DriveShaft 9-1 9-2 9-3 9-4 1.RemovethescrewfixingtheRibbon ClutchHolding Plate. 9-2 2.RemovetheRibbon Driveshaftbyhand.(9-3)
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10.Removingto LFreductiongears, mid gearandrollergear 10-1 10-2 10-3 10-4 1.Removethreesnaprings with astandard type screwdriver.(10-3) 2.Pullthe two LF reduction gears out of the shaft (Inset a standard type screwdriver intothegapbetweentheLFgearand frame,andliftthegear).(10-4) 3.Removethe midgearinthesame manner as shown secondstep. 4.Removetherollergearinthesame manner asshownsecondstep.
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11.Removingthepaperfeedshaft andbearings 11-1 11-2 11-3 11-4 11-5 11-6
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1.Removingthe LFReductiongear.(11-1) 2.RemovingtheRollergear.(11-2) 3.Turn the bearing with small pliers to match up the projections on the bearing with thenotchesin theframe.(11-3) 4.Remove the bearings from the paper feed shaft to outside of the frame (There are twobearings,ontherightandleft).(11-4) 5.More thepaperfeed shaft byhand.(11-5) 6.Detachittoward the frontfrominsidethe frame.(11-6)
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12.Removethecamgear,reduction gear, changegearandgearguide 12-1 12-2 12-3 12-4 1.Removethe motorgear.(12-1) 2.Removeonescrewto remove the LeverHolding Spring(12-2) 3.Pull the cam gear out of the shaft , Inset a standard type screwdriver into the gap between the cam gear and frame, and left the cam gear. Be careful mot to press the screwdriveragainsttheshaft fromtheside. 4.Remove the reduction gear in the same as shown in above step. The change gear and gearguidearealsoremove withthereductiongear
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13.Removetheribbon cam 13-1 13-2 13-3 1.Removethesnapringwith astandardtypescrewdriver.(13-2) 2.Pull the ribbon cam out of shaft (Inset a standard type screwdriver into the gap between the ribbon cam and frame, and lift the cam. Be careful not to press the screwdriveragainsttheshaft fromtheside).(13-3)
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14.Removetheleadscrewassemble,platenbearings and leadscrewtop 14-1 14-2 14-3 14-4 14-5 14-6
