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Commodore MPS-801, Руководство по обслуживанию, Страница: 30 / 34

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Commodore MPS-801 Скачать руководство пользователя страница 30

Содержание MPS-801

Страница 1: ......

Страница 2: ...ormation con tained herein The listing of any available replace ment part herein does not constitute in any case a recommend ation warranty or guaranty as to quality or suitability of such replacement...

Страница 3: ...TROUBLESHOOTING GUIDE 12 WIRING DIAGRAM 15 CONNECTOR NOTES 16 TRANSFORMER PCB ASSEMBLY PARTS 17 SCHEMATIC 18 MAIN LOGIC PCB ASSEMBLY PARTS 19 SCHEMATIC 21 MECHANICAL ADJUSTMENTS GUIDE PILLAR INSTALLAT...

Страница 4: ...and symbols All PET graphic characters 7 vertical dots 480 columns maximum Dot addressable CBM ASCII code Height 7 dots 0 111 inch Width 6 dots 0 099 inch 50 CPS left to right uni directional 80 Colum...

Страница 5: ...r I 5VDC I CONTROL CIRCUIT I I 20 VDC I I DRIVERS REGULATOR I L _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1 DOT SENSOR POWER LAMP H SOLENOID 1 PLATEN r I I PAPER FEED I I I...

Страница 6: ...FLOWCHARTS 1 Main flowchart Enters READY status to input NO 3...

Страница 7: ...I a I aJ Q 0 C i S I 3 I c SEVENTH DOT PIN REG PIN DATA REG 11111 r1111110 D PIN CNT PIN REG DOT SNS PIN DATA REG FIRST DOT Counter for 1 column 7 dots of character pattern Register storing 1 column...

Страница 8: ...epping motor LF STEP REG LF PW A register memorizing the number of steps per line feed Power for the LF stepping motor I I 1 ___ 1Oms I 1 144 inch is the smallest unit of movement and occurs when the...

Страница 9: ...mer motion the left to right movement of the hammer and the revolution of the platen are precisely synchronized As the platen rotates for each ridge seven dot signals are sent to the CPU The CPU then...

Страница 10: ...er GP DR 2 7 ON LOW When it is ON the H solenoid is activated which allows the recovery spring to return the print head to the home position The HOME signal TEST PIN which is shaped from the output of...

Страница 11: ...shaped output signal from the dot sensor and as shown in the figure below it comes in groups of 34 sequential pulses When the HOME signal goes LOW the CPU starts to count the number of dot pulses unti...

Страница 12: ...line feed the CPU waits until the HOME signal goes HIGH which means the print head has returned to the home position When the HOME signal becomes HIGH the CPU sets the HC signal HIGH about 160ms later...

Страница 13: ...ed by lifting the connector housing inserting the cable and then pressing the housing down until it clicks into position make sure the connection is good by pulling up on the cable slightly 6 The smoo...

Страница 14: ...cloth and dry rapidly Use good quality clean liquids Plastic parts of Wipe off dirt the enclosure Rubber parts Wipe off dirt Electrical parts Do not wash Wipe off dirt with a cloth dampened with benz...

Страница 15: ...is broken Replace it 2 H solenoid is defective To check H solenoid remove cable at connector CN 4 Take an ohmmeter reading between pins 1 and 2 Approx imately 63 ohms resistance should be present 3 T...

Страница 16: ...of PIN Repair it MN 1l 210 or 250us SYMPTOM 4 Some part of a printed character is missing POSSIBLE CAUSE SOLUTIONS 1 Part of the platen ridge is broken Replace the platen 2 Control PCB is defective R...

Страница 17: ...esistance should be present at each pin 2 Control PCB is defective Check signals LF1 LF4 and repair SYMPTOM 7 Self test does not work POSSIBLE CAUSE SOLUTIONS 1 Dot sensor is bad Replace it or repair...

Страница 18: ...CK HEAD PCB r HOME SENSOR VC RELAY PCB PRINT VC HEAD PCB 0 E 62384 94HB 0 BLUE ORANGE LF MOTOR YELLOW BROWN RED J BLACK CARRIAGE RED MOTOR WHITE J H SOLENOID CLUTCH WHITE CARRIAGE RETURN BLUE BLACK HO...

Страница 19: ...erminal of the lamp PCB unit must be connected to pin 1 of CN7 connector 7 of the control PCB The wire of the lamp harness is marked with white to indicate pin 1 C Lamp harness t white mark No 1 termi...

Страница 20: ...02 5155 ALL PARTS SVT AWG18 84802 5351 U INCLUDED IN Fuse MT4 630 mA 250V 84802 5301 BOTTOM CASE Toroidal Coil SC 02 101 2A 8409 30200 ASSEMBLY 314555 01 Ceramic Cap 10000 pF 125V MURATA 8409 02043 Ce...

Страница 21: ...V Il C3 T I I I I I e PRIMARY CIRCUIT TRANSFORMER 2 13 12 a t c 11 z 0 frl 10 rn 9 8 6 1 0 1 l1 0 1 2 AC23V 1 ____ 0 3 l 1 01 4 1 0 5 r Q 6 AC15V 9V J AWG18 Ul STYLE 1007 CSA TYPE TR 54 GREEN YElLOW S...

Страница 22: ...74LS373 ROM CUSTOM PART TRANSISTORS 01 02 03 DIODES 01 02 03 04 05 06 07 Small Signal 2SC458C Hitachi 2501276 Voltage Reg p A 7805VC 152076 Hitachi 152076 Hitachi 152076 Hitachi 21 V Zener HZ22 1 Hit...

Страница 23: ...C7 Ceramic 022jlF 25V 8409 01266 C8 Ceramic 022jlF 25V 8409 01266 C9 Ceramic 022jlF 25V 8409 01266 C10 Ceramic 022jlF 25V 8409 01266 C11 Ceramic 022jlF 25V 8409 01266 C12 Ceramic 022jlF 25V 8409 0126...

Страница 24: ...NSER VALUES A IN JJfl UNLESS OTHEI1WISE SPECIFIED 1 2 WITU HEAT SINK e SlY I n6 I rrsTQ R71 4 5 2 L_ r r JoE l TP3 e CN3 OM s J 1 7 1 Co VI J 2 4 D IIC 8 I ml 0 _ _ _ _ J II VM eN u _ 14M W S2VB F l n...

Страница 25: ...ide pillar B 2 Insert the head adjustment lever into the left end of guide pillar B and tighten the flange nut e so that the foot of the lever is set in click hole as shown in the figure below when pa...

Страница 26: ...e foot of the head adjustment lever is at position I as shown on page 22 Guide Pillar Adj 4 Firmly tighten up the two screws and make sure that smudging does not appear when the foot of the lever is a...

Страница 27: ...n of the dot sensor unit as follows a Normal a b The uppermost part is missing missing b e missing The hammer starts printing too early when a platen ridge has not yet reached the correct position To...

Страница 28: ...rotation detector be careful that the two bosses are engaged with the gears of the head motor PLATEN GEAR o 00 o I I I I I o ROTATION DETECTOR I I Rotate the platen gear so that one of the holes of it...

Страница 29: ...B 1 2 C 31455101 801 SOUNDPROOF COVER w PAPER SHELF 1 3 C 31455201 801 FRONT BEZEL UNIT 1 4 C 31455301 801 TOP CASE 1 5 C 31455401 801 DECORATIVE PLATE ASSY 1 Plate w Paper Advance Switch 2 Lamp PCB H...

Страница 30: ...Ribbon Drive Pulley Spring Shaft 2 Carrier Guide Pillar w Head Adj Lever 2 2 NOTE 2A The carrier unit with print head can be manually moved when the head solenoid is pressed as indicated by the black...

Страница 31: ...tor 3 1 C31455901 801 PLATEN ASSEMBLY 1 Platen w Upper Cover 2 Paper Guides 2 3 2 C 31456101 801 GROUND PLATE ASSEMBLY 1 Bottom Ground Plate 2 Side Ground Plates 2 3 1 3 2 REF NO 4 1 C 31456001 801 TR...

Страница 32: ...r w PCB 2 Dot Sensor w PCB 3 Wiring Harness w PCB 4 Cable Connector w PCB 5 3 C 31456401 801 CARRIAGE DRIVE BELT 5 4 C 31456501 801 HEAD SOLENOID 1 Head Solenoid w Mounting Plate 5 3 LONGER SIDE NOTE...

Страница 33: ...sors Motors Continued REF NO 5 5 C 31456701 801 LlNEFEED MOTOR 5 6 C 31456601 801 HEAD MOTOR NOTE 5C When inserting C into the platen shaft be sure to reach the utmost end by rotating C while insertin...

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