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MICROLINE 182/183 PRINTER

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21. 4 Ww 1 1 1 4 p 23 Alo 11 12 13 14 15 16 17 18 18 19 20 20 22 22 23 24 24 25 26 27 Figure 8 2 Printer Mechanism Fippaozs 1011P1 frame a Moaz 1 4025 1202 1 Base frame 1 MLIB3 4PA4025 1012G Platen assembly 1 82 Paper chute assembly 1 82 Paper chute assembly ML183 1 82 1 3PA4025 1207C1 Bottom paper guide assembly ML183 4PP4025 1038P1 Near end bracket NOTE APBA025 1039PT Nearendiewr 1 Min Muss 4PB4025 1040P1 Bottom near end lever 7 1 4PP4025 1118C1 Carriage roller 1 4PP4025 1048P1 Head clamp WE 2PUA007 1065Pi Carriage cabe 1 Muaz 1 4 4025 1075 1 Ribbon feed gear assembly 1 3 4025 111691 Comedor 1 3 Le 4PPa025 1114P1 Contact pressure rubber 1 apPa025 1182P Cable camp 1 4YX4025 1800C1 Space motor assembly 1 APB4025 1090P1 Main shaft screw 2 4025 210201 Indicator assemby 1 Mrez 3PA4025 2410G2 Indicator assembly 1 ML183 4PB4025 1097P1 Pressure roller spring R 1 ML182 4 PB4025 2413P1 Pressure roller spring R 1 ML183 1 M1182 1 4PP4025 1099P1 uber 4 4025 1100 Cord clamp 7 2PU4003 5624P1 SLBS printed circuit board 1 Note Parts indicated by are common to both ML182 and ML 183 Correction A Changed 8
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26. 1 2 3 4 5 6 7 Control board Remove the upper cover see 3 2 1 Remove serial interface board by removing two screws locating on both sides of interface connector Remove interface board upward if installed Remove transformer connector Q from the control board D Remove three screws 3 and two screws 4 Remove control board D by lifting upward see Notes below Observe papernear end lever when removing the PCB Before reassembly secure rubber insulator S is installed For reassembly reverse the disassembly procedure Notes 4 1 Donottouch the teminal contact or connector 6 directly with hand and make sure that if is clean 2 When affaching make sure that paper near end lever 7 is c ear in the groove of phofosensor Son control board a 3 2 3 Transformer assembly 1 2 3 4 5 6 Remove the upper cover see 3 2 1 Remove connector O from the control board Remove ground strap screw 2 Remove two screws 3 Remove transformer assembly with power and cord receptacle 5 by lifting upward For reassembly reverse the disassembly procedure er 3 2 4 Power supply board 2 Remove the upper cover see 3 2 1 2 Remove the transformer asssembly see 3 2 3 3 Remove power supply board from tra nsformer 2 by pulling off connection pins 4 For reassembly reverse the disassembly procedure Note When attaching set the powersuppl
27. ASNA 277 esti AW Of ASN8 22628486 IZTEZSUSH RUN gx co ZNO AS 0 6 a 4 9 gt 16 4 8 2302020022152 78 p 1 629 49 1831 AD AS orn 1312 152 T er DE ERI 4 158 65410029 AG 18 Fe 8 3SVHd 7361 7555 ADANNOS 483 un 11924 96 m aac 29998 9 1516 210 MS 135 ec srl 158 Fe 11574 26 zag Let 2981 401 OTISMWOY Toei RAS 1738 ve 4 86 455 CURS di 9101 191 d e 23 heya vasis TI 9333 aip des 43 98 eleva 225 9859 M3dVd o NO GV3H ed En 293131 10 31 17 20 um ee m 0 41 15141 08 VIVO XH 75 2120530 E aw 815 re 340 NO dS ast ra IN 403118 anton Ads 223 221 46 72 162 089 22 i nds ES asna 1892 6391 vads HE Y lov 1031 109 689 OV 687 10 2031 IV 782 6 oe 2931 775571689 ev 182 609 v t ddl 15 5768 5 S 031 115910666 9 9 03 ereas SV 2 03 95576951 Ove 8 803 755116 79 47 200100 N3Sd rroi Hep Mum Hum iii MAA COMER A TA ov 132 4 Lov 132 Hf S 22 56 H 38
28. Light emitting diode Regulator Capacitor Electrolytic capacitor Resistor Table 7 1 Symbol exa ccn _ PARAS Reference ee Mark 2 THERMISTOR un Description Switch Connector terminal Means a single part Frame ground Dot head element Coil 339 Comparator Thermistor _ Signal ground Transformer Photo sensor Fuse 9 uOISIA9H peog rS WH Tu 281 Te EEJ 1018 E ze Ea yas t 103NNQD 940 19091 lE via 55 838 629 22 m 459 198 c ggg 45286 9 399 0014 gr DE Ez SE une MS 401 Q13SWOH n ze rs aes Use vv 8E 195 MS epp a Ez VU SIONS awviHddYd TAE Ly 15 298 NIJO Ipi 22 T ganana JES 1980 x e 9907 anal M eon LONWWO 3S2 869 sv 56 109 ua y 61 MW sors Penn et 098 MS Ip ora 2 YW CANA 8 H 189 59 PW 22 MELITAS zea 248 05 o pons 130 19 pr Ir Zia 049 25 ig 238 e 4 81S iv 14091699 330 0 48 15 62 1236 85 193738 OE AdS gag 65 dd i nas 7258 09 zay 1894629 26 48 209 818
29. M 52033 ISSUE 1 RECORDS OF CHANGES Description of CO Printer PCB Serial No Page affected changes 3 24 3 25 3 28 Correction 3 29 Replacement 8i 9 8 10 5 AA IO Addition Front cover Descriptions of Freface 1 1 ML183 are added 1 2 3 34 Replacement 8 2 to 8 8 AB 1 AB 2 1 AC 2 220 v 501 A00001 61 240 V 501A0000041 Circuit diagram Rev 7 of SLMC 2 circuit board is added Addition Circuit diagram Rev 8 of SLMC 2 circuit board is added Addition NML 007 220 v 501 A0000001 501 A0000001 Circuit diagram Rev 9 of SLMC 2 circuit board is added Addition 504 0009311 240 504 0004441 NML 035 Circuit diagram Rev 10 of SLMC 2 circuit board is added Addition 506A0012961 240 V 506A0007001 NML 053 220 v 506A0000009 240 V 506A0000003 Circuit diagram Rev 11 of SLMC 2 circuit board is 7 59 to 7 69 added 506A0000009 Addition 506 0000003 508 0016961 508 0008501 NML 063 Description of Part No ECO No Printer PCB Serial No changes 220 V 50440009311 NML037 340V 50440004441 220 V 50340007411 Replacement NML 038 240 V 50340003091 P Deletion Back cover Renewal of issue Replacement 1 CONFIGURATION 1 CONFIGURATION 141 Standard Printer Configuration The standard configuration of the ML 182 183 is a
30. NSTB of the LS1 Q4 This data is output from pin 44 NRXD the internal latch and is sent to serial port pin 10 RXD of the microprocessor Q12 In sending the serial data is sent out directly from pin 11 TXD of the microprocessor Refer to the High Speed 9600 BPS Serial Interface Manual for details 15 Print Head Drive Circuit This circuit drives the head magnets corresponding to the HEAD DATA1 to 9 signals in accordance with the HEAD ON signal thus making the print head print characters When the HEAD ON signal goes high the RC integrator R157 and C158 or C55 determines the head drive time This integrator automatically compensates the printing pressure in accordance with the drive voltage 30 V Thatis the integrator elongates the drive time if the drive voltage lowers and shortens the drive time if the drive voltage rises A 22200200 HEAD ON 07 17 THRESHOLD y LEVEL OVER DRIVE 07 14 1 6 Spacing 1 Space motor control The motor control 151 Q5 MSM61048 outputs the space motor phase signals SP U SP V and SP W in accordance with the spacing command from the microprocessor and at the same time outputs the overdrive signal SPD A The SPD A signal is a fixed period pulse signal whose pulse width is controllable by the program and is used to control the motor drive time The SP ON OFF signal is output for acceler
31. PE on the control board is turned off and asa result the PAPER END signal becomes 0 This signal is fed to pin 34 of the motor contro 151 Q5 causing the printing operation to be stopped and the ALARM indicator to light 1 10 Power Supply The power supply consists of a power transformer power supply board a DC power supply circuit The input AC voltage is transformed into 7 6 24 and 10 VAC by the power transformer and these AC voltages are further converted into 8 VDC 5 VDC and 30 VDC levels by the DC power supply circuit for supply to each circuit 1 Power supply board The power supply board mounts the power switch AC fuse and AC noise filter 2 Power transformer If the power transformer temperature rises abnormally the built in temperature fuse of the transformer blows to prevent any adverse effects on other components 2 MECHANICAL OPERATION 2 1 Mechanism and Operation of Print Head see figure 3 The print head is spring loaded utilizing a permanent magnet and can be easily removed or installed The print head is mounted on a carriage that runs parallel to the platen and is connected with the control circuit via the head board The print head consists of 1 a Wire guide b Wires 0 Armature assembly d Yoke e Springs f Spacer g Magnet assembly 1 Thermistor PC board Print head operation When the print head is in the non printing state each armatur
32. Yoke 14 Spacer 11 Magnet assembly 13 Printed circuit board 2 Not printing Printing paper Figure 3 AA 15 2 2 Space Mechanism and Operation see figure 4 The spacing operation is performed by driving the carriage frame which is guided by the carriage shaft mounted parallel to the platen by the DC motor mounted on the bottom of the carriage frame The space mechanism consists of 4 DC motor with motor gear b Carriage frame including stator yoke and motor board c Carriage shaft d Space rack e Slit sensor f 511 disk 1 Spacing operation The carriage with the print head and space motor mounted on it moves parallel to the platen along the carriage shaft As the space motor rotates counterclockwise the motor gear is driven rightward along the space rack and as a result the carriage is driven also rightward The spacing mechanism is so designed that when the space motor rotates one turn the carriage frame moves 0 8 inch 20 32 mm Motor rotation also rotates the slit disk and the slits pass through the slit sensor The position of the carriage frame can be obtained by counting the number of slits detected by the slit sensor Print head Space rack Carriage shaft KR AN e 8 ESE Carriage frame Slider Base plate Figure 4 23 Head Gap Adjusting Mechanism see figure 5 The head gap adjusting mechanism adjusts t
33. broken Yes Are No Replacethe space motor No resistances assembly about 2102 Refer to 3 2 8 Remove the ribbon Yes cassette and ribbon feed pear assembly heck resistance of space motor coil at connection Refer to section 6 3 Verify thatthe contacts of connection O is not damaged or worn M 6 10 When power is turned on carriage operation is abnormal runaway vibration incomplete homing Yes No Replace the SLMC board No Vibration Forward Reverse PaseA PhaseB I L Yes No Is T 30V output Are phase A B signals being output to Q5 55 56 Yes Replace the SLMC board No Is the cord clamp of connectionGirmily lock Is the ribbon feed assembly attached Reassemble correctly Is printer operation normal Yes 5 connection board SLSB broken Yes Replace the connection No board Refer to 3 2 15 15 carr age cable broken Yes Can carriage be easily moved by hand with power Replace the carriage cable No Refer to 3 2 10 No Replace the space motor assembly Refer to 3 2 8 When power is turned on the homing operation is normal but the indicator display is abnormal 15 N the POWER LED 2 E Yes Is 5V being applied to the anode of POWER LED Is the A
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35. 1 with EPROM Qty ERANI pom i 1 1 Note Parts indicated by common to both ML182 and ML183 A Correction Changed Remarks ML182 ML183 Note ML182 ML183 ML182 ML182 option ML183 240 V 220 V ML182 option ML183 ML182 option ML183 ML182 ML183 ML182 ML183 ML182 ML182 for maintenance without ROM ML182 Item A18 A18 19 19 19 19 7 20 20 20 20 21 21 Part No 4YA4042 1001G042 4YA4042 10016043 3YX4021 1012C1 3YX4021 1032G1 3YX4021 1012G2 3YX4021 1032G2 45474 1 4YB4021 1031P1 3LP 45474 2 4YB4021 1031P2 3YU5003 561163 Correction Changed Figure 8 1 con Description SLMR 15 printed circuit board STD I F with EP ROM SLMR 15 printed circuit board IBM I F with EP ROM AC transformer assembl AC transformer assembly AC transformer assembl AC transformer assembly Transformer Universal Transformer Qty 1 1 1 1 1 1 1 Transformer 1 Universal Transformer 1 3YU5003 5611G2 SLPB 2 printed circuit board 1 SLPB 3 printed circuit board 8 13 Remarks ML183 ML183 ML182 120 V ML182 220 V 240 V ML183 120 V ML183 220 V 240 V ML182 120 V ML182 220 V 240 V ML183 120 V ML183 220 V 240 V 120 V 220 V 240 V Figure 8 2 Printer Mechanism 8 14
36. 15 Figure 8 2 con 28 4 84025 1105 1 LF motor 1 29 4 4025 1106 1 Tension spring 1 30 4PB4025 TIO7P1 31 4PB4025 1108P1 Release link front 32 4 4025 1109 1 Release link rear BENE 33 4PB4025 110PT Release ink ih 4PB4025 1113P1 Paper lock release lever 1 fe 35 4PB4025 1115P1 Stoppermbber 2 36 4PB4025 1159P1 Gomme 4 37 3PB4025 1049P1 Space rack 2 37 3 4025 1049 2 Space rack 1 ML183 38 4PP4025 1158P1 Radiating rubber Note Parts indicated by are common to both ML182 and ML 183 When replacing the indicator assembly from an old model 4PA4025 1091G1 4PA4025 1091G2 to a new model 4PA4025 2102C1 4BA4025 2410G2 the pressure roller spring and upper cover must also be replaced at the same time 8 16 Remarks ML182 option ML182 option 4PA4025 1315C1 Pin tractor assembly R ES 4 4025 1328 1 Pin tractor assembly 1 Figure 8 3 Pin Tractor Assembly Option Circuit board No indication SLMR 15 0 Revision No indication Remarks NN Figure 8 4 SLMR 15 Printed Circuit Board 8 19 Hevision No indication Ciricuit board No indication 540A2036M2102 1 G2 120V 5404204452631 Fuse 0 63A 1 G3 220V 240V Figure 8 5 SLPB Printed Curciut Board APPENDIX Theory of Operation APPENDIX THEORY OF OPERATION 1
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38. 3 2 15 Replace the carriage cable Refer to 3 2 10 Replace the connector Note careful not to damage the copper foil on the connection board when measuring the resistance During data reception and printing printing stops due to an ALARM Is No ALARM LED lit Wait until the print head cools Yes Is the paper installed properly NO Install paper correctly Yes Turn power off and move carriage by hand Does carriage move smoothly No Yes 15 homing operation normal No C heck items O to O Yes Replace space motor or SLMC board 6 18 Wrong characters are printed or some characters are not printed Is interface cable connected properly Yes Does self test print normally Yes Is the bit length set properly Yes 15 1108 input normally from host to CN1 pins 2 to 9 Yes Replace SLMC board Connect cable properly Replace SLMC board Properly set the data bit length Replace interface cable Some dots are not printed Remove the print head 15 any dot pin Broken Check resistance of print head coil at connection Refer to section 6 3 Is resistance about 2002 Replace the print head Print is not dark enough 18 the ribbon fed
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40. 4 4 3 7 3 4 10 9 9 lt lt 4 lt 8 10 4 9 4 2 Line feed motor Resistances of each coil should be about 70 Pins at connection Signals Pins on LF moter 3 38 3 2 39 2 40 3 1 97 37 92 4 Ken 36 Common 5 35 6 3 Space motor Resistances of each phase should be about 21 N Pins at connection Signals Pins on SP moter 15 14 4 16 cus 18 20 20 22 BAR 19 83 2 The carriage does not move when power is turned on Yes Proceed 102 No Is AC power supplied to transformer Yes No is 8 VDC output power supplied to SLPB board Yes Replace the AC cable No Yes 15 5 VDC bly output assembly Yes Is fuse F1 blown Proceed 2 Replace the fuse F1 If fuse blows again proceed to 5 Replace the SLPB board Replace the SLMC board 15 7 6 from pin 2 and 5 of CN4 Replace the transformer Is Fuse F1 on SLMC board blown Replace the SLMC board s Replace the fuse F1 If fuse blows again proceed to When power 15 turned on the Power LED lights but the carriage does not move 15 the ALARM LED Lit No e No Remove ribbon cassette Yes 5 Replace the 5 board Can carriage be
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43. and the parallel data received through the interface connectoris latched in accordance with the strobe signal STB and is sentto the CPU in accordance with the RD signal In this mode the M M60201 also sends BUSY ACK PE and SELECT signals to the interface connector in accordance with the WR signal b Serial interface function The ISEL signal goes low and the serial interface function mode is selected only when the high speed serial interface board 9600 BPS is installed In this mode the MSM60201 sends SSD RTS and signals to the interface connector in accordance with the WR signal c Address decoder The address decoder decodes the address signal A12 to A15 and sends the ROM SEL O signal d Parallel port function This function is used to load the DIP switch data 5 151 MSM61048 The MSM61048 motor control 151 has the following functions a b Space motor speed control function This accelerates and decelerates the space motor in accordance with commands from the microprocessor and controls the space motor speed in each printing mode Dot timing generation function This generates the dot on timing signal IPT synchronized with the printing speed in accordance with output signals PHASE A B of the encoder on the space motor and sends this timing information to the microprocessor ports The MSM61048 has a 12 bit output port and a 10 bit input port and
44. inch 0 4 to 0 5 mm Adjusting lever Adjusting screw Adjusting gear 0 016 to 0 0 2 inch 0 4 to 0 5mm Print head Adjusting screw Platen Figure 5 1 6 TROUBLESHOOTING AND REPAIR 6 TROUBLESHOOTING AND REPAIR 6 1 Items to be Checked Before Repair If repair is requested by a user check whether the printer can be fixed by the troubleshooting procedure described in the User s Manual If possible ask the user under what conditions the trouble occurred and record the answer Before troubleshooting let the printer operate under the same conditions as at the time of trouble occurrence and check whether the trouble is reproducible If the trouble is not reproducible let the printer perform test printing and then proceed to troubleshooting 6 2 Method of Troubleshooting First verify the trouble condition then locate the trouble in accordance with the detailed procedure given for each item in table 6 1 Before remedying the trouble thoroughly read the precautions in Section 3 1 The checkpoints for SLMC board and SLSQ board are shown in figure 6 1 and the connector locations and pin numbers are shown in figure 6 2 Table 6 1 Division Trouble description Trouble at The carriage does not move at all poweren The carriage does not move at all and the POWER LED is lighted 2 The fuse F1 on the power supply board SLPB blows Trouble during data reception pr
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46. near end lever 1 For reassembly reverse the disassembly procedure Note Near end lever only can be removed by removing PCB see 3 2 2 by pulling upward 3 2 19 Bottom near end lever 1 2 3 4 5 6 7 Remove the upper cover see 3 2 1 Remove the printer mechanism See 3 2 11 step 7 The control board need not be removed Remove the LF motor assembly see 3 2 12 Remove the platen 3 2 14 Remove the paper chute assembly see 3 2 16 Remove bottom near end lever 1 For reassembly reverse the disassembly procedure 3 2 20 Carriage frame 1 2 3 4 5 6 7 8 9 Remove the upper cover see 3 2 1 Remove the printer mechanism See 3 2 11 step 7 The control board need not be removed Remove the column indicator bar see 3 2 13 Remove the print head see 3 2 6 Remove the ribbon feed gear assembly see 3 2 7 Remove the space motor assembly see 3 2 8 Remove two screws 1 one on each side Remove carriage shaft 2 together with carriage frame 3 Remove carriage frame 3 from carriage shaft 2 10 Remove head clamp 4 11 For reassembly reverse the disassembly procedure 3 39 3 2 21 Drive shaft Optional tractor feed unit 1 2 3 4 5 Remove screw 1 Remove side frame assembly 2 Remove drive gear 3 Draw out drive shaft 4 For reassembly reverse the disassembly procedure Not
47. outputs control signals in accordance with the commands input from the microprocessor The input port is also used to read information from the operation panel switches etc If a high speed serial interface board 9600 BPS is installed the input port is also used to read the DIP switch data from the interface board Address latch The address latch latches the low order 8 bits of the address AO to A7 These bits are used as an address for read write operations with peripheral devices Address decoder The address decoder decodes the address signal A11 to A15 and sends the RAM SEL 4 signal weibeig 49019 2 4 22089 SS s A 05 259 SH 410 Ajddng L O C 2SH SH AS 8 OV LOZOINSW 62919ju ELONdO 203 57 T3 TIVHVd TANVd YOLON 0333 Josues pue Gy 91 10 8 8POLSWSW 181 101000 08408 vonsog 4 HO10N 39VdS 108 95 ui YING OV3H LNidd snd vivd 553 sng ssddaav 2 Sr J H3AIHG P 1 3 Initialization The printer is initialized when the power is turned or when the parallel interface signal 1 PRIME is received from the host computer Initializat
48. properly No Does ribbon feed mechanism operate properly when ribbon cassette is removed Yes Replace ribbon feed assembly Refer to 3 2 7 Is ribbon wear excessive Replace ribbon Ne Is the head gap set correctly Yes Yes Replace ribbon cassette Adjust the head gap Refer to section 5 Yes Is 30V output Cathode of D13 No Proceed 108 Yes Replace print head Is Printer operation normal No Replace the SLMC board END Line feed is not performed 15 paper installed No properly Install paper properly Yes Is the platen unusually Yes hard to turn manually with the power off Adjust paper feed mechanism Turn off the power and remove the SLMC board Check the resistance between pins 35 and 36 36 and 37 38 and 39 and Is 39 and 40 at CN3 cnnection bar a of connection No connection efer to made properl figure 6 2 Note properly Verify that the LF motor position is correct and the contacts are not bent Are resistances about 7098 Is Yes the pattern of connection board broken Replace the connection board Refer to 3 2 15 Replace the SLMC board 15 printer operation Re place the LF motor FORTE Refer to 3 2 12 Note Be careful not to damage the copper foil on the connectio
49. tabs 1 by gently pushing tabs from side plate two on each side Remove platen assembly 2 For reassembly reverse the disassembly procedure Notes 1 Move the b as gear 4 to the platen gear 3 as indicated by the arrow then engage them at portion The bias gear is differentiated by half of a tooth with respect to the tooth of platen gear 3 2 After assembling make sure that the platen gear is correctly engaged and the platen turns smoothly 3 2 15 Connection board 1 2 3 4 6 7 8 Remove the upper cover see 3 2 1 Remove the printer mechanism See 3 2 11 step 7 The control board need not be removed Remove four screws 1 and 2 Move the carriage to left end Remove the connection board while feeding the carriage ae 4 through the hole on baseframe Disengage two claws clamp O contact rubber 7 and carriage cable 4 Remove connection board 3 from circuit support 8B For reassembly reverse the disassembly procedure Notes 1 Do not fold carriage cable 4 2 Donottouchanyoftheterminals contacts directly by hand or told them Also make sure they kept clean 3 30 3 2 16 Paper chute assembly 1 2 3 4 5 6 7 8 9 Remove the upper cover see 3 2 1 Remove the printer mechanism See 3 2 11 step 7 The control board need not be removed Remove the LF mot
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55. 51 2 printed circuit board 1 120 V 21 3 05003 5671637 printed cirult board 1 20 V 21 3YU5003 5611G4 4 printed circuit board 1 29 4025 1709 1 Pin tractor OPTION 1 Option Figure 8 2 Printer Mechanism Figure 8 2 Printer Mechanism No a 1 1 4025 1011 1 frame ML182 1 1PP4025 1202P1 Base frame ML183 2 4PA4025 1012G1 Platen assembly 1 ML182 2 4PA4025 1203G1 assembly ML183 3 4025 1027 1 Paperchute assembly ____ 1 MLI82 3 3 40251205 1 Paper chute assembly 1 8 5 3 4025 03201 Bottom paper guide assembly 1 82 5 3PA4025 1207G Bottom paper guide assembly 1 ML183 6 JaPpa025 1038P Nearend bracket 1 NOTE 7 25 03 Nearend lever 1 2 7 jaPBa025 1211P1 Nearendiewer 1 83 3984025 104081 Bottom nearend lever 1 3 JAPPA025 1118CT Carriage role 1 JaPrao25 1048P1 Head amp 11 2PU4007 1004P1 Carriage cabe 1 ML18 TI 2PU4007 1004P2 Carriage cable 1 83 13 8984025 1116 1 Comedor 1 14 JapBa025 1088P Slider 1 15 aPra025 1114P1 Contact pressure rubber 1 16 appao2s 1182P1 Cable camp _______ 17 4Y 4025 1800G1 ___ motor assembly 1 18 4 4025 1089 1 Carriage shaft _ 1 82 18 4PB4025 1089P2 Carriage shat 1 MLI83 19 4PB4025 1090P1 shaft sc
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59. CIRCUIT OPERATION This section describes the operation of the printer circuits 11 General The electrical section of the printer consists of the components shown in figure 1 On the control board are mounted not only the microprocessor and its peripheral circuits but also the DC power circuit drive circuits paper end sensor and interface connector The power supply is connected with the control circuit via a cable and other electrical parts are connected via the connection board 6 291119813 JO 1 1161 02 1614 OV p eog Ajddns Jamod 984 peeu jud 1 2 1 2 3 4 Microprocessor and Its Peripheral Circuits Microprocessor Q12 8051 The microprocessor is the nucleus of the control circuit and its peripheral circuits operate under control of this microprocessor The 1 ports of the microprocessor are connected with the address bus data bus and control lines Program ROM Q8 The program ROM stores the control program for the printer The microprocessor operates under control of this program RAM Q13 The RAM stores data such as received print data 151 MSM60201 The MSM60201 is an external interface LSI and has the following functions a Parallel interface function The parallel interface function mode is selected when the level of the mode selection signal ISEL is high In this mode IFD1 to 8 are used as an input port
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61. LARM LED Iit Replace 5150 board Yes 15 paper installed Make proper connections at A and Install paper Yes Is the near end Lever interrupting the PC sensor Yes Reset or replace the near end lever Replace the SLMC board install paper Depress the SELECT switch No Yes 15 installed Normal LED display Yes ls No printer in SELECT state Yes 15 SEL LAMP 05 42 at 0 Replace the 5 board Yes Is T5V being applied to anodes of LEDs ke connections properly 9 Replace the 5150 board 6 13 When power is turned on fuse Fl on power supply board 51 blows 5 the fuse properly rated Replace fuse with properly rated fuse Remove connector 4 and turn power on Does the fuse blown again No Replace the SLMC board Replace the SLPB board and turn power ON Yes Does the fuse blown Normal operation Yes Replace the transformer 6 14 When power is turned on fuse F1 on the control board SLMQ blows Is the fuse Re i place with properl prope em rated fuse aii Replace the SLMC board 6 15 During data reception neither spacing nor printing occurs Verify data is being transmitted to printer 3 Yes With interface cable removed are
62. M 4YA4042 1001G013 151 2 printed circuit board 1 ML182 IBM I F with EP ROM 4YA4042 1001G017 SLMC 2 printed circuit board 1 for maintenance without ROM 4YA4042 1001G101 SLMC 2 printed circuit board 1 ML182 STD I F with masked ROM 4 4042 1001 102 SLMC 2 printed circuit board 1 1 1182 IBM I F with masked ROM 4YA4042 1001G103 SLMC 5 printed circuit board ML182 COMMODORE I F with EP ROM 4 4042 1001 104 SLMC 6 printed circuit board 1 182 TTY 1 F with EP ROM Parts indicated by are common to both ML182 and ML 183 8 3 Figure 8 1 18 4YA4042 1001G042 LMC 2 printed circuit board EE 83 TD I F with EP ROM 18 4YA4042 1001G043 LMC 2 printed circuit board 1 ML183 IIBM I F with EP ROM 3VX4021 1012C1 AC transformer assembly 1 MLI82 120 V 19 3YX4021 1013Ci JAC transformer assembly 1 ML182 220 V 19 31X4021 1014G1 AC transformer assembly 1 ML182 240 V 19 021 101262 transformer assembly 1 ML183 120 V 19 37X4021 1013G2 JAC transformer assembly 1 183 220 V 19 3YX4021 1014G2 transformer assembly 1 ML183 240 V 20 spasay ____ 31 820209 20 31 45751 MLi82 Q20 V 20 319458831 1 MLI82 40 V 20 1 454742 MLi83 120 V 20 319454752 1 20 V 20 31P 45483 2 Transformer 1 240 V 21 5003 5611 2 2
63. MICROLINE 182 183 PRINTER MAINTENANCE MANUAL This maintenance manual describes field maintenance of the Microline 182 1 83 for maintenance engineers For performance specifications and operating procedures refer to the User s Manual CONTENTS Page CONFIGURATION 4 425236 an 1 1 11 Standard Printer Configuration 1 1 12 OptionS nn nennen 1 2 MAINTENANCE TOOLS 2 1 PARIS REPLACEMENT sica de 3 1 3 1 Precautions for Parts Replacement 3 1 3 2 Disassembly and Reassembly Procedures 3 2 CLEANING se ee 4 1 ADJUSTMENT na a ann 5 1 TROUBLESHOOTING AND REPAIR 6 1 6 1 Items to be Checked Before Repair 6 1 6 2 Method of Troubleshooting 6 1 6 3 Connection Circuit and Resistance Check for Print Head and LF SP Motor 6 5 CLRCUT DIAGRAM SERE 7 1 MAINTENANCE PARTS LIST 8 1 EN DIXES THEORY OF OPERATION SPECIHCATIONS STANDARD MODEL SPECIFICATIONS IBM COMPATIBLE MODEL DIP SWITCH SETTING TABLE STANDARD MODEL DIP SWITCH SETTING TABLE IBM COMPATIBLE MODEL Part No OKI J Par No
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69. TS LIST Printer unit tack M Wa Figure 8 1 Printer mechanism Figure 8 2 Pin tractor assembly Figure 8 3 SLMC 2 Printed circuit board Figure 8 4 SLPB Printed circuit board Figure 8 5 gan 1 inch shortened Figure 8 1 Printer Unit Item ojo 1 1 16 12 12 13 13 14 14 15 15 16 16 17 18 18 18 18 18 18 18 Note Figure 8 1 Printer Unit HPRAISOTZD cover 1 Maa 1PB4025 1221P1 Lower cover 7 MaS 4PBA0251137P NOTE Upper cover assembly 1 ML182 38 4025 1226 1 cover assembly tracto 1 MLI83 025 11436 Upper cover 1 3 4025 1227 1 Upper cover 1 ML183 4P84025 1123P1 4025 112601 Access cover 1 Mimaz ML182 option 2P84025 1187P1 Access cover tracto 1 M1183 4884025 113491 14P84025 1124P1 _ Connector cover 1 Print head 1 1 54011 1051 1 AC cord 1 1240 V 3YS4011 1052P1 AC cord 1 220 V Pin tractor assembly 1 ML182 option BPA4025 1311G2 Pin tractor assembly 1 MLI83 2PBA025 1130P Tractor cover 1 MLI82 option 2P84025 1130P2 Tractor cover 1 1 82 option 1 i 82 4YA4042 1001C012 151 2 printed circuit board 1 ML182 STD I F with EP RO
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72. and access cover Roll paper stand only ML182 AC 2 APPENDIX D DIP Switch Setting Table Standard Model APPENDIX D DIP SWITCH SETTING TABLE STANDARD MODEL The DIP switches provided on the control board are used to select the following functions m Note 1 Selection of language Page length setting AUTO LF When CR is received When CR is received automatic carriage return automatic carriage return and one line feed are is carried out after data carried out after data printing printing Selection of 7 bit Input data is all processed Input data is all processed ON 8 bit codes as 8 bit codes as 7 bit codes ROM SW6 SW7 AD 1 Note 1 Selection of language and Page length Language ASC ASC 0 BRITISH GERMAN FRENCH SWEDISH DANISH NORWEGIAN DUTCH ITALIAN BRITISH GERMAN FRENCH SWEDISH DANISH NORWEGIAN ASC 1 ASC II 0 BRITISH GERMAN FRENCH SWEDISH DANISH NORWEGIAN DUTCH ITALIAN BRITISH GERMAN FRENCH SWEDISH DANISH NORWEGIAN AD 2 APPENDIX E DIP Switch Setting Table IBM Compatible Model _ APPENDIX SWITCH SETTING TABLE IBM COMPATIBLE MODEL The DIP switches provided on the control board are used to select the following functions 13 12 11 WL AUTO LF Automatic carriage return Automatic carriage return OFF and one line fee
73. ating condition Be careful not to remove parts unless necessary Disassembly should be the minimum necessary Use only the specified maintenance tools Disassemble the printer in the specified order of disassembly procedures otherwise parts may be damaged In the course of disassembly it may be agoodideato keep the removed small parts such as screws and washers by attaching them temporarily to their original places so as not to lose them ICs such asthe microprocessor ROM and RAM can easily be damaged by static electricity Do not wear glovesthat are apt to produce static electricity when handling printed circuit boards Do not place the printed circuit boards directly on the printer or the floor 3 2 321 1 2 3 4 5 6 7 8 9 Disassembly and Reassembly Procedures Upper cover Tum OFF the POWER switch and remove AC cable 7 from the outlet and then remove interface cable 2 remove paper Remove acoustic cover and paper separator if installed Remove tractor feed unit by depressing lock lever O and tilting backward if it is installed Remove roll paper with paper shaft 5 by lifting upward Remove side frame 6 by tiling forward if itis installed Remove access cover by lifting rear edge Pull platen knob 8 out Remove two screws a Remove upper cover 1 by lifting up front and pushing it backward For reassembly reverse the disassembly procedure 322
74. ation and deceleration requiring a larger torque The motor driver MTDV drives the space motor in accordance with these signals Pins 9 and 11 of the MTDV are for the protective circuits against overvoltage and overcurrent respectively SP U 5 SP W 6445 AN GEL SP ON OFF Overdrive current waveform 2 5 encoder With operation of the space motor the PHASE A and PHASE B signals are generated by the photosensor and disk slit The motor control 151 05 MSM61048 frequency divides these edge pulse signals in accordance with the print pitch and outputs the IPT signal to provide dot on timing and carriage position detection timing SP U Jj 5 SP W 2 0 dep 2 1 224201 OJT 1 1 ELT LIT IPT 10CPI 1 120 12CPI A IT1CPI 206 AA 10 17 Line Feed The line feed motor is locked with the 8 voltage while it is at a stop During line feed operation the line feed motor is driven by the 30 voltage applied in accordance with the LF OVD signal gt ge ps E jede Me CO um a NAM el ee FORWARD REVERSE 1 8 1 2 Alarm Circuits Drive circuit fault alarm circuit This is a protective circuit which makes the AC fuse blow when a fault occurs in the print head drive circuit space motor drive circuit line feed motor drive circuit or their peripheral ci
75. d are is carried out after data carried out after data printing printing SKIP OVER 1 inch OFF PERFORATION Selection of Il including European character set characters Note Page length setting swa Number of lines for 6 LPI OFF m _ OF 88 5 Factory setting ON SW8 72 AE 1 OKI Oki Electric industry Co Ltd International Division 10 3 Shibaura 4 chome Minato ku Tokyo 108 Japan Tel 03 454 2111 Telex J22627 Cable OKIDENKI TOKYO European Sales OKIDATA GmbH Sarvice Support Centre Hansa Allee 187 4000 D sseldorf 11 West Germany Tel 0211 597940 Telex 8587218 OKI D M 520332 ISSUE 4 Printed in U K
76. e When inserting the drive shaft be careful to keep the sprocket pins in phase 3 2 22 Lock shaft Optional tractor feed unit 1 Release lock lever 1 2 Remove two screws 2 one on each side 3 Remove side frame 3 4 Draw out lock shaft 4 5 For reassembly reverse the disassembly procedure 4 3 2 23 tractor R assembly and pin tractor L assembly Optional tractor feed unit 1 Remove screw 1 2 Remove side frame 2 3 Release lock levers 3 then remove pin tractor R assembly 4 and pin tractor L assembly 5 4 For reassembly reverse the disassembly procedure Note When inserting the pin tractor assemblies be careful to keep the sprocket pins in phase 3 2 24 Belt Optional tractor feed unit 1 2 3 4 5 6 7 Remove the pin tractor assembly see 3 2 23 Remove lock lever 1 Open tractor cover 2 Disengage three claws 3 Remove tractor frame 4 Remove belt 5 For reassembly reverse the disassembly procedure Note When inserting the belt be careful to keep the sprocket pins of the both tractor assemblies in phase 4 CLEANING 4 CLEANING Caution 1 Be sure to turn OFF the AC POWER switch before cleaning 2 Be careful not to let paper lint etc get inside the mechanism The printer interior should be cleaned periodically as follows Period Either 6 months or 300 operating hours whichever comes first Ti
77. e ribbon is fed In bi directional printing the ribbon gear rotational direction reverses every time the direction of carriage movement reverses In this case the gears in the ribbon feed gear assembly switch the rotational direction so as to feed the ribbon in a fixed direction Ribbon cartridge Drive gear ink tank gt gt A Ribbon drive gear Ribbon gear Space motor assembly Figure 6 25 Paper Feed Mechanism and Operation Paper feed is performed by rotating the platen and pin tractors which are driven by the LF pulse motor The paper feed mechanism consists of 4 Pulse motor with gear b Reduction gear c Platen d Tractor feed unit e Pressure rollers 1 Paper feed operation see figure 7 The paper feed pulse motor is mounted on the left side frame and its rotation is transmitted to the platen through the reduction gear Platen rotation is also transmitted through the idle gear to the tractor feed unit The paper feed mechanism is so designed that when the pulse motor rotates 48 steps 360 paper is fed 0 167 inch 4 32 mm Pin tractor Sprocket wheel Platen Tractor feed Option Vanable pm feod Pulse motor Figure 7 2 Paper clamp mechanism see figure 8 Paper clamp mechanism Release lever Pressure roiler Figure 8 a When the release leveris setto the open position the release link moves backward and the front and rear release links rota
78. e in the bottom paper guide That is the wedge on the bottom near end lever pushes down the projection of the near end lever and the paper end sensor is on When the printer runs out of paper the tip of the bottom near end lever falls into the hole in the bottom paper guide so that the rear part of the near end lever turns off the paper end sensor and thus paper end is detected Also in this case paper end is detected when the end of the remaining paper is about 1 inch 25 4 mm from the printing position Near end lever Bottom near end lever Groove of platen Platen and Paper sprocket wheel Bottom near end lever Paper for bottom paper feed Figure 9 APPENDIX B Specifications Standard Model APPENDIX 1 2 3 4 Print method Print speed Utility mode NLQ Character pitches Maximum number of characters per line Character pitch Maximum number of characters per line Control code 5 6 Line feed pitches Paper end detection SPECIFICATIONS STANDARD MODEL Impact dot matrix 120 characters second at 10 12 17 1 CPI 60 characters second at 5 6 8 5 CPI 30 characters second at 10 12 17 1 CPI 15 characters second at 5 6 8 5 CPI Selectable with control codes SER 0 2 inch 5 08 mm 0 167 inch 4 23 mm BI uia rM 0 117 inch 2 96 mm A 0 1 inch 2 54 mm ee 0 083 inch 2 12 mm TIEPE I 0 058
79. e is attracted by the permanent magnet and the springs holding the armatures are compressed by the thickness of the spacer Therefore the print wires which are fastened to the individual armatures are held retracted within the wire guide When signals corresponding to a character to be printed are detected by the control circuit currents flow through the corresponding coils to nullify the magnetic flux generated by the permanent magnet between the armatures corresponding to those coils and the permanent magnet pole As a result those armatures are driven toward the platen by the force of the armature springs and the print wires fastened to those armatures eject from the tip of the wire guide and strike the paper through the ribbon to print dots on the paper After the character is printed the magnetic flux of the permanent magnet attracts the armatures again so that the print wires retract into the wire guide The print head has a built in thermistor to prevent the coils from overheating and burning due to continuous bi directional printing over a long period If the coil temperature exceeds the limit about 100 C the control circuit detects the thermistor signal and stops the printing operation until the coil temperature returns below the limit Printing paper Pri ge rint head Platen 1 Printing 7 Armature assembly Print wire 9 Thermistor Qo 10 Wire guide 12
80. e tab 2 7 Remove by inserting a minus screwdriver between space rack and base frame 2 gently pushing the space rack 3 up 8 For reassembly reverse the disassembly procedure Note After installing space motor assembly check and adjust the gap between the platen and print head see section 5 3 18 19 32 10 Carriage cable 1 Remove the upper cover see 3 2 1 2 Remove the print head see 3 2 6 3 Remove the ribbon feed gear assembly see 3 2 7 4 Remove the space motor assembly see 3 2 8 5 Remove the space rack see 3 2 9 6 Unlock the two tabs 1 and remove cord clamp 2 7 Remove contact rubber 3 8 Remove carriage cable 4 9 For reassembly reverse the disassembly procedure Notes L Do not touch the carriage cable and connection board 5 terminal contact 4 direct y with hand and make sure that it is clean 2 Make sure the carriage cab e 4 is not folded 3 Afterinstalling space motor assembly check and adjust the gap between the platen and print head see section 5 3 2 11 Printer mechanism 1 Remove the upper cover see 3 2 1 2 Remove connector 1 connecting the control board 8 and transformer assembly 3 Remove ground strap screw Q 4 Remove the operation board see 3 2 5 5 Remove four screws 3 and washers 4 6 Remove printer mechanism 5 7 Remove three screws two screws 7 and control board 8 8 For reassembly reve
81. estes 0 125 inch 3 175 mm Paper end is detected when the end of the remain ing paper is about 1 inch 25 4 mm from the printing position in rear feed and bottom feed AC 1 8 9 10 11 12 13 14 Dimensions ML183 20 16 inch 512 mm 3 15 inch 80 mm 10 83 inch 275 mm ML182 3 15 inch 80 mm 10 83 inch 275 mm Height Note These dimensions do not include the platen knob and tractor feed unit Weight oec 9 92 ib 4 5 kg MUS Ss So tees 13 Ib 6 kg Input power One of the following as specified 120 10 50 60 Hz 2 220 10 50 60 Hz 2 240 10 50 60 Hz 2 AC power cable Length 5 9 ft 1 8 m Power cosumpion During operation About 33 VA During idling About 8 VA Wattage 6 W during idling 212 uoc teras during test printing When Super speed RS232 C interface board option is mounted Ribbon Cartridge ribbon for exclusive use Re inking cartridge a SA Black Ribbon life About 3 million characters Interface The standard model has a Centronics parallel interface i Optional interface a Super speed RS232 C serial interface b Super speed RS422 A serial interface Options Tractor feed unit only ML182 with acoustic cover
82. face Super speed RS232 C serial interface b Super speed RS422 A serial interface 14 Options Tractor feed unit only ML182 with acoustic cover and access cover Roll paper stand only ML182 AB 2 13 Interface The standard model has a Centronics parallel interface or RS232 C serial interface 9600 BPS Optional interfaces a Super speed RS232 C serial interface b Super speed RS422 A serial interface 14 Options a Tractor feed unit with acoustic cover access cover and paper separator b Roll paper stand AB 3 APPENDIX C Specifications IBM Compatible Model APPENDIX C SPECIFICATIONS 1 Print method 27 Print speed Utility mode NLQ 3 Character pitches 4 Maximum number of characters per line Character pitch Maximum number of characters per line Control code 5 Line feed pitches 6 detection IBM COMPATIBLE MODEL Impact dot matrix 120 characters second at 10 12 17 1 CPI 60 characters second at 5 6 8 5 30 characters second at 10 12 17 1 CPI 215 characters second at 5 6 8 5 Selectable with control codes ERE 0 2 inch 5 08 mm O GPR sachet rael xv or 0 167 inch 4 23 mm CPT 0 117 inch 2 96 mm jede 0 1 inch 2 54 mm A 0 083 inch 2 12 mm TAA CPI 0 058 1 48 A 0 167 inch 4 23 mm A E t
83. he gap between the platen and print head by changing the tilt angle of the carriage frame with the adjusting lever When the adjusting lever is operated the adjusting screw which is interlocked with the lever via a gear rotates to change the tilt angle of the carriage frame around the carriage shaft The print head mounted vertically on the opposite side of the adjusting screw on the carriage frame moves closer to or away from the platen with change in the carriage frame tilt angle Carriage shaft Adjusting screw arrows N Adjusting gear Adjusting operation Print head indicated by 7 Adjusting screw xo a A E Widens Adjusting operation indicated by 2 gt icm C EN Figure 5 AA 19 2 4 Ribbon Feed Mechanism and Operation see figure 6 The ribbon feed mechanism feeds the ribbon synchronously with the spacing operation The mechanism is driven by the space motor The ribbon feed mechanism consists of 1 2 Ribbon feed gear assembly b Ribbon gear space motor c Ribbon cartridge Ribbon cartridge A one way feed endless ribbon is used Ink is replenished by the built in ink tank in the ribbon cartridge so that clear printing is always assured Ribbon feed operation Asthe space motor rotates the ribbon gear on the space motor shaft rotates to drive the drive gear in the ribbon cartridge via the ribbon feed gear assembly and as a result th
84. inch 1 48 mm sa 0 167 inch 4 23 mm 8 EPI sais 0 125 inch 3 175 mm Variable line feed pitch n 144 0Sn3S127 is specifiable Also 10 14 144 inch 6 24 144 inch and 8 LPI 18 144 inch are available in graphics Paper end is detected when the end of the remain ing paper is about 1 inch 25 4 mm from the printing position in rear feed and bottom feed AB 1 7 Dimensions Note These dimensions do not include the platen knob and tractor feed unit 20 16 inch 512 mm 3 15 inch 80 mm 10 83 inch 275 mm 8 Weight MUTS 9 92 lb 4 5 kg MUTSI COO 13 Ib 6 kg 9 Input power One of the following as specified 120 10 50 60 Hz 2 220 10 50 60 Hz 2 240 10 50 60 Hz 2 10 power cable Length u a 5 9 ft 1 8 m 11 Power consumpion During operation About 33 VA During idling About 8 VA Wattage 6W during idling 22W during test printing When Super speed 5232 interface board option is mounted 12 Ribbon Cartridge ribbon for exclusive use Re inking cartridge lnk Clor ese ves Black Ribbon life About 3 million characters 13 Interface The standard model has Centronics parallel interface Optional inter
85. inting Print is not dark enough A switch on the operation panel does not function The carriage returns to the home position at the power on time The spacing operation is normal but the printing operation is not performed The carriage operation is abnormal runway vibration incomplete 3 homing The homing operation is normal but indicator display is abnormal 4 The fuse F1 on the control board SLMC blows Neither spacing nor printing operation occurs SLMC Board 42 07 E 40 09 D 9 ap 1 AC ev 1 REN 16 CN2 30 ya Era 83 alalala i 5150 Board Figure 6 1 Checkpoints of Printed Circuit Board pue 1012 05 z 9 8 amp uonoauuoj 31 paeog OW S peau jung 6 3 Connection Circuit and Resistance Check for Print Head and LF SP Motor 1 Print head Resistance of each coil should be about 20 Q Pins at connection Signals Pins on print head 5 67 567 5 6 5 6 lt lt lt lt 5 6 7 5 6 7 14 14 13 13 EAU 14 1 14 13 13 12 2 lt lt lt 2 13 I lt 5 lt lt lt lt 3 1 Reor View 12 12 11 of ELL 12 4 12 Printhead 2 2 2 5 lt lt 4 2 5 2 It 10 io LLL 6 m 3 3 3 lt
86. ion is started with the RST OUT signal output from the reset circuit Q7 pin 13 to reset 012 mircoprocessor 04 interface 151 and Q5 motor control LSI When resetting is completed the program starts with mode setting of Q12 Q4 and Q5 memory ROM and RAM check RAM initialization and then carriage homing The program finally establishes the interface signals output of ACK signal BUSY signal etc lights the SELECT indicator and informs the host computer printer is ready for data reception iri the data reception wait state thus completing the initialization 1 4 1 2 Interface Control Parallel interface The data from the interface is input through the connector CN1 and the interface 151 Q4 MSM60201 latches this input data in sync with the STB signal The BUSY signal is on during processing of this data When the processing is completed the BUSY signal is turned off and an ACK signal is sent to request the next data The BUSY signal is also sent to stop data sending when data cannot be received due to receiving buffer full state etc TB NEGOCIO A RO A gt e 4 Serial interface If the high speed 9600 BPS serial interface board is installed the ISEL signal becomes low and the interface 151 changes the 1 port to that for serial interface In reception serial data from serial interface board is input through pin 33
87. lsias sweu 7735 i tdi 18 X9 1914 LO3SNNOO ASO 184 1986 19185 17073 4 NAWO 452 I MINWWO 353 989 NO QV3H 7196 Id 41 11 88 0 31 235 1461 37 e 340 d PR 556 25 udo 1238 206 OV 1609 182 60p 20 1182 1606 ty 20182 182 80 wa 172 20 359 132 28 432 00 142 287 1342 1132 Soy 132 bh 132 1132 e v 182 019 Ziy 172 we 132 SIV 71321 i 5 0972 1479 IS gy 22 qi 52 Zx7100 0 2 612 2 35 Fern 836 5 A ud 95 EN og 12521 a 25 SE 79067 34 AS 401 9135 WOX vv ER 298 ES api Le 91 1 v 25 y 9938 DE rag GNA H3dVd SE 65s 10 85418 91P1 vivaxu 054 815 E 123135 Qo D 149 fm In 4508 QD SE PO QL tele tele lote 142 ia 10911620 18 1168 v 18 689 199 629 Ivv i62t0 11611689 10 91 68 9 115871689 12971689 115671689 339 6 1291675 6 9 ALSN SN ADV Sn8N 2031 503 911 9031 244 OYE 98 985 94 9
88. marks 540A2036M2102 Fuse 1 0A 5404204452631 Fuse 0 63A 5404204452501 Fuse 0 5A G2 120V 220V Figure 8 5 SLPB Printed Circuit Board 8 10 Figure 8 1 Printer Unit A7 A7 8 9 11 12 32 13 113 14 14 A15 15 A16 16 17 18 18 18 18 Part No 1PB4025 1121P1 1PB4025 1221P1 Lower cover 4PB4025 1137P1 3PP4025 1143C1 3PP4025 1227G1 4PB4025 1123P1 3PA4017 3044G1 2PB4017 3056P1 3PB4025 2156P3 4PB4017 3046P1 4YA4025 1401C1 3Y 4011 1052P1 3PA4025 2633G1 4025 263302 2PB4025 1130P1 2PB4025 1130P2 4025 1269 1 3YX4025 1201C2 4 4021 1007 1 4YA4042 1001G012 4YA4042 1001G013 4 4042 1001 112 4 4042 1001 103 4YA4042 1001G104 Figure 8 1 Printer Unit Description Lower cover Rubber foot 4PP4025 1152P1 Upper cover Upper cover DIP switch access cover Access cover Access cover tractor Access cover tractor Platen knob Connector cover Print head AC cord AC cord Pin tractor assembl Pin tractor assembl Tractor cover Tractor cover 4025 1268 1 Paper separator 3YX4025 1010G2 Printer mechanism Printer mechanism SLSQ printed circuit board SLMR 15 printed circuit board STD I F with EP ROM SLMR 15 printed circuit board IBM 1 F with EP ROM SLMR 15 printed circuit board SLMR 5 printed circuit board COMMODORE I F with EP ROM SLMR 6 printed circuit board
89. me required for cleaning About 10 minutes Tool Dry soft cloth such as gauze and vacuum cleaner if available Parts to be cleaned See table 4 1 Table 4 1 Parts To Be Cleaned Parts Description Carriage and its surroundings Remove paper lint dust dirt and ribbon lint Paper path Paper end sensor Remove paper lint and dust attached to the sensor Refer to figure 9 on page AA 26 5 ADJUSTMENT 5 ADJUSTMENT Head gap adjustment Tools O Thickness gauge set Phillips screwdriver No 2 200 Metal rod of about 0 04 inch 1 mm diameter and 3 inches 76 mm long An extended paper clip can be applicable Adjusting procedure see figure 5 1 1 2 3 4 5 6 7 Turn OFF the POWER switch and remove the AC input plug from the AC receptacle Remove the access cover Remove the ribbon cartridge Set the adjusting lever to range 1 Insert the 0 019 inch 0 48 mm thickness gauge between the platen and print head Make sure that the thickness gauge can be smoothly inserted if rubbeda little Carry out this check at the right end and left end of the platen If gap adjustment is required press down the adjusting gear with the metal rod to disengage the gear from the adjusting lever and adjust the gap by turning the adjusting screw with the screwdriver After the adjustment check the gap between the platen and print head again The adjustment range is 0 016 to 0 02
90. moved easily bv hand when power is off Can carriage be moved smoothiy Yes is 30 V output Replace the ribbon cassette Remove ribbon gear assembly Referto 3 2 7 Turn off the power and remove the SLMC board Check the resistance between pins 16 and 17 and 17 and 18 at CN3 connection board Can Yes side of connection be moved Refer to figure 6 2 Note smoothly Replace the ribbon feed gear assembly Are resistances about 2107 15 Yes Replace SLMC board Replace the space rack Refer to 3 2 9 Yes is printer normal Replace the space motor assembly Refer to 3 2 8 Note Be careful not to damage the copper foil on the connection board when measuring the resistance Yes END With CN4 disconnected is 30 VAC output between pins 1 and 6 of CN4 Replace the SLMC board Replace the transformer Is the cord clamp_of connection firmly locke Is the ribbon feed assembly attached correctly Verify that the contact ressure rubber is Inserted and locked Yes Are the screws on the_ connection board 5158 tight Match the assembly to the board and tighten the screws Yes Replace the carriage cable Refer to 3 2 10 Is carriage cable
91. n board when Yes ENSE DENN During data reception and printing fuse F1 on power supply board blows Is the fuse properly 22 hire properly rated 5 power check resistance of print head coils SP motor and LF motor Refer to section 6 3 15 resistance of print head about 2002 Replace the print head Make the connections Yes f 15 resistance of SP motor about 21032 Replace the SP motor Make the connections O O properly Yes Is resistance of LF motor about 700 No Replace the LF motor Make the connections Yes Replace the SLMC board switch on the operation panel does not function The carriage returns to home position when power is turned on Press switch is signal input to Q5 pins 37 to 40 Are Mi pele and connected properly Yes Replace SLMC board Make proper connections Yes Replace SLSQ board 7 CIRCUIT DIAGRAM 7 CIRCUIT DIAGAM Table 7 1 shows the meanings of symbols used in the circuit diagrams and figure 7 1 shows the circuit diagrams Symbol pp g ve EU Table 7 1 Table of Symbols Mark OSC TR SCR REG Description Inverter open collector Ceramic oscillator Transistor Thyristor Diode Zener diode
92. not touch the carriage cable 5 and space motor assembly terminal contact directly with hand and make sure that it is clean 2 Make sure the carriage cab e 5 is not folded 3 After installing ribbon feed gear assembly D check and adjust the gap between the platen and print head see section 5 3 2 8 1 2 3 4 5 6 Space motor assembly Remove the upper cover see 3 2 1 Remove the print head see 3 2 6 Remove the ribbon feed gear assembly see 3 2 7 Remove connector D and observe concave surface Remove three screws Q Remove space motor assembly 3 For reassembly reverse the disassembly procedure Notes 1 Do not touch the space motor assembly 3 terminal contact directly with hand and make sure that if is clean 2 When installing space motor assembly put the side of the assembly close 10 carriage frame 4 and align side of the assembly with the corresponding side of the carriage frame 3 When installing slider 5 put the D and E parts of the slider close to space motor assembly 3 4 Afterinstalling space motor assembly 3 checkandadjusf fhegap between the platen and print head see section 5 3 1 3 2 9 Space rack 1 Remove the upper cover see 3 2 1 2 Remove the print head see 3 2 6 3 Remove the ribbon feed gear assembly see 3 2 7 4 Remove the space motor assembly see 3 2 8 5 Remove spring 1 6 Disengag
93. or assembly see 3 2 12 Remove the platen assembly see 3 2 14 Open two claws CD with a minus screwdriver With the claws opened remove paper lock release lever 2 Be careful because the claws are very small Disengage middle release link 3 from rear release link 4 and remove rear release link 4 Remove four screws 5 two on each side Remove paper chute assembly For reassembly reverse the disassembly procedure 3 33 3 2 17 Bottom paper guide assembly 1 2 3 4 5 e 7 8 9 10 Remove the upper cover see 3 2 1 Remove the printer mechanism See 3 2 11 step 7 The control board need not be removed Remove the LF motor assembly see 3 2 12 Remove the platen assembly see 3 2 14 Remove the paper chute assembly see 3 2 16 Remove screw and remove the near end lever assembly 2 Close the claws 3 and remove the front release link 4 together with middle release link 5 Remove two three in ML183 screws 6 Remove bottom paper guide assembly D For reassembly reverse the disassembly procedure 3 218 Near end lever and bracket 1 2 3 4 5 6 7 Remove the upper cover see 3 2 1 Remove the printer mechanism See 3 2 11 step 7 The control board need not be removed Remove the LF motor assembly see 3 2 12 Remove the platen assembly see 3 2 14 Remove the paper chute assembly see 3 2 16 Remove
94. rcuits thus preventing trouble For this purpose this circuit monitors the drive time using the HDALM SPALM and LFALM signals interlocked with the overdrive signal of each drive circuit If the drive time of any drive circuit exceeds the specified time the drive circuit fault alarm circuit outputs an ALM signal high to turn on the SCR This causes the secondary coil 30 V ofthe transformerto be short circuited causing an overcurrent to flow through the primary coil and making the AC fuse blow Head overheat alarm circuit In order to protect the head coils this circuit monitors the head temperature using the built in thermistor of the print head If heavy duty printing is performed continuously for a long time the print head temperature rises When the head temperature reaches a certain value about 100 C a head overheat alarm is detected When the alarm is detected the printing operation is halted to wait for the head temperature to lower When the head temperature returns below the alarm detection temperature the printing operation is restarted The alarm detection is performed as follows When the temperature in the print head rises the resistance of the thermistor lowers and the potential of the comparator Q7 negative input lowers to invert the comparator output causing the HEAD TEMP signal to be output to the motor control 151 12 1 9 Paper End Detection Circuit When the paper runs out the photosensor
95. rew 2 20 4PA4025 1091G1 indicator assembly 1 Mia 20 4 4025 109102 Indicator assembly ML183 22 4PB4025 1097P1 Pressure roller spring R 1 23 4884025 1098 Pressure roller spring 1 24 4PPA025 1099P1 Contact rubber 1 25 4PB4025 11008T Cord camp 1 28 25 LF motor 1 29 8984025 110681 Tension sing 1 Note Parts indicated by are common to both ML182 and ML 183 Figure 8 2 con 30 4964025 110787 Release pos 1 1 31 4PB4025 1108PT Release ink Fon 1 F 32 14PB4025 1109P1 Release link ea 1 1 33 aPB4025 1110P1 Release link 34 4PB4025 1113P1 Paper lock release ever 1 35 4PB4025 1115P1 Stopper rubber 2 36 4PB4025 1159P1 4 37 3984025 104991 Space 1 Mine 37 3PB4025 1049P2 Space rack MLI83 4994025 115881 Radiating rubber _____ 3 Note Parts indicated by are common to both ML182 and ML 183 8 7 Remarks 4 4025 1315 1 Pin tractor assembly R 4 4025 1328 1 Pin tractor assembly 1 ML182 option ML182 option Figure 8 3 Pin Tractor Assembly Option Circuit board No indication Revision No indication Remarks f Figure 8 4 SLMC 2 Printed Circuit Board Revision No indication Ciricuit board No indication Re
96. rse the disassembly procedure 3 23 3 2 12 LF motor assembly 1 2 3 4 5 Remove the upper cover see 3 2 1 Remove the printer mechanism See 3 2 11 step 7 The control board need not be removed Remove two screws 1 Remove LF motor assembly 2 For reassembly reverse the disassembly procedure Notes 1 po not touch the LF motor assembly 2 terminal contact directly with hand or fold it and make sure that if is clean Move the bias ge 5 to the platen gear 4 as indicated by the arrow then engage them at portion D The bias gear 5 is differentiated by half of a tooth with respect to the tooth of platen gear 4 When assembling the LF motor assembly 2 loosen the screw 3 fastening the connection board and make a space between the base and connection board Then install the LF motor while pressing it against and O Then tighten the screw 3 fastening the connection board 4 After assembling make sure that the platen gear D is correctly engaged and the platen turns smoothly 3 2 13 Column indicator bar 1 2 3 4 5 the upper cover see 3 2 1 Remove two springs 1 see figure Remove two shafts 2 by squeezing exposed shaft pin and pushing out Remove column indicator 3 For reassembly reverse the disassembly procedure 3 2 14 Platen assembly 1 2 3 4 Remove upper cover see 3 2 1 Disengage four
97. s follows cw tractor feed unit ML183 only Figure 1 1 Printer Configuration 1 2 Options 1 Tractor feed unit with acoustic cover access cover and paper separator only ML1 82 2 Roll paper stand only ML182 3 Superspeed 5232 serial interface board 4 5 High speed RS422 A serial interface board 1 CONFIGURATION 1 1 Standard Printer Configuration The standard configuration of the ML 182 1 83 is as follows tractor feed unit ML183 only Figure 1 1 Printer Configuration 1 4 1 2 Options 1 Tractor feed unit with acoustic cover and access cover only ML182 2 Roll paper stand only ML182 with paper row detection micro switch 2 MAINTENANCE 2 MAINTENANCE TOOLS The tools in table 2 are necessary forreplacing printed circuit boards and unit parts For other maintenance procedures different tools may be necessary Table 2 Maintenance Tools Remarks ale screwdriver EN to 2 6 mm screws 1 100 Eum e 2 200 Round pliers No 1 head gap aaam 3 5 3 1 1 2 3 4 5 6 7 8 PARTS REPLACEMENT Precautions for Parts Replacement Be sure to tum OFF the AC POWER switch and remove the AC input plug from the AC receptacle before disassembly or reassembly Do not disassemble the printer as long as isin good oper
98. si ces 3 735 1351 21 9 2V1VG 031 7208 02 rasan 4508 men 5 su Lan 9219 san ane YUMI axy 7 7535 15 6 bly LAMA NO 901 ADV 055 ADV AS eo AS 1530 1 Sot 5 ee a 931 3 4 i e 423135 ata 2 5 77 193136 410 4 E m prm eve 080 854 91 san 1 14 0 189 512 75977 2041 193138 gt ss 199135 280 09 4 0 zz 1901 3d gt z amd dof sary ad vag Ez 1961 8 5 60 vz 501 sag 26 Gg AMA rex 98d 33 991 4 04 20 5 8 2da 1508 v 184 92 900 ASNB 22625465 IZLZSUSH IND 6218 0 en ASt 6 8 4 9 5 z 1 AA 221 vi El Zh ON UOS 135 WV 103NNOO 389 NELO1S ga vt 355 wages 2959 IQ NNIND 359 NO QV3H TON Sesa 00000 Liu ub 44444144 nunnn 2 223 330 NO OWSTMN O oe a d t 132 142 142 142 1342 add 132 132 132 Hooemu oO 182 132 vz 172 132 132 44444444 44444 ro O00 0 132 18 985 237 2346 438 987 98 LIYE 236 23 23 446 1238 246 1226 123 1236 120 182 182 182 182 192 172 192
99. signal levels at CN1 as shown in table below No Signal Levels Yes With cable connected are parallel data pins 2 to 9 STB pin 1 on CN1 being received Is interface cable connected corrrectly No No Yes Yes Replace interface cable Yes Can self test be performed No Replace SLMC board Proceed to 6 16 Connect interface cable correctly During data reception and printing spacing is normal but nothing i is printed oes TR10 on SLMC board turn ON and OFF altern tely Replace the print head No 15 printer operation normal END Turn off the power and remove the SLMC board Check the resistance between pins 5 6 7 and 1 2 3 4 10 11 12 13 14 at CN3 connection board side of connection A Refer to figure 6 2 Note No Are resistances about 200 Yes Replace the 5 board 15 the cord clamp of connection firmly locke the ribbon feed assembly attached correctly Yes 15 Yes Connection board broken Is carriage cable Yes broken No Is Yes the contact pin of print head connector deformed 20 that bine Q Or worn 6 17 Replace the SLMC board Assemble completely the connection board Refer to
100. te counterclockwise At the same time the release shaft interlocked with them also rotates counterclockwise so that a gap is made between the pressure rollers and platen allowing insertion of paper Release lever Rear pressure lever Pressure roilers Front pressure lever Release shaft Rear Release link Front retease link Pressure roller release link OPEN Figure 8 b Release shaft When the release lever is set to the closed position the release link moves forward and the front and rear release links rotate clockwise At the same time the release shaft interlocked with them also rotates clockwise so that the pressure rollers are pushed against the platen by the front and rear presssure levers allowing paper to be fed CLOSE Figure 8 c 2 6 1 2 Paper End Detection Mechanism see figure 9 Rear paper feed When paper is present in the printer the paper prevents the near end lever from falling into the groove of the paper chute and the paper end sensor is on When the printer runs out of paper the near end lever falls into the groove of the paper chute so that the rear part of the near end leverturns off the paper end sensor and thus paper end is detected Paper end is detected when the end of the remaining paper is about 1 inch 25 4mm from the printing position Bottom paper feed When paper is present in the printer the paper prevents the bottom near end lever from falling into the hol
101. yboard 3 along guide 4 before assembling 3 2 5 Operation board 2 Remove the upper cover see 3 2 1 2 Disengage two tabs D 3 Remove connector 2 connecting the connection board and operation board 4 Remove operation board O 5 For reassembly reverse the disassembly procedure Note Be careful not to damage the cab e connecting the switch and the connector 3 2 6 1 2 3 4 5 6 Print head Turn OFF the AC POWER switch and remove AC cable O fiom the outlet Caution Print head may be hot after printing Remove access cover Q by lifting up rear edge of cover Remove ribbon cartridge Q by gently squeezing both sides and lifting up Raise head clamp 4 by swinging right tab up see figure Remove print head 9 by lifting straight up For reassembly reverse the disassembly procedure Note Insert the print head in connector 7 while pressing it against the carriage frame 3 2 7 0 Q 3 4 5 6 Ribbon feed gear assembly Remove the upper cover see 3 2 1 Remove ribbon cartridge 1 by lifting both sides A Disengage the two front tabs 3 and two reartabs total of four tabs Then lift upward by inserting small flat screwdriver to slots Remove ribbon feed gearassembly 4 Remove cable 5 cable holder 6 and contact pressure rubber 7 from ribbon feed gear assembly 4 For reassembly reverse the disassembly procedure Notes 1 D

MICROLINE 182/183 PRINTER

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