Страница 1: ...CE MANUAL YD 380 HALF HEIGHT HIGH DENSITY DOUBLE SIDED 5 25 INCH FLEXIBLE DISK DRIVE Contents of this manual may be changed without notice Check the revision number when placing an order September 198...
Страница 2: ...Date ptember ote I 21 Revisions Rev Description Revised Pages 83 A First Edition publication e YD 380 may be referred to as simply a drive e 5 25 inch flexible disk may be referred to as simply disk...
Страница 3: ...2 3 Test Equipment 2 4 Exerciser 3 0 PREVENTIVE MAINTENANCE 3 1 General 3 2 Visual Check 3 3 Cleaning 4 0 SERVICE CHECKS REPLACEMENT AND ADJUSTMENT Maintenance Level 1 4 1 PWB 4 2 Index Sensor Assembl...
Страница 4: ...Control PWB 4 10 Head Load Solenoid 4 11 Front Lever 4 12 Front Bezel 4 13 Stepper Assembly 4 14 Head Carriage Assembly 5 0 PARTS ASSEMBLIES PHYSICAL LOCATIONS 6 0 TEST POINT CONNECTOR PIN ASSIGNMENT...
Страница 5: ...s 2 0 MAINTENANCE TOOLS AND TEST EQUIPMENT The following tables list the maintenance tools maintenance supplies test equipment and exerciser for the YO 38D 2 1 Maintenance Tools List TOOL Y E DATE PIN...
Страница 6: ...es Supplies Y E DATA PIN Tie Wrap TY 23M Kitagawa 031005 01 2 3 Test Equipment Test Equipment Multimeter Electronic Counter Oscilloscope For use at Maintenance Level 2 2 4 Exerciser Equipment Exercise...
Страница 7: ...t wear binds and loose connections Checking for these problems can help reduce downtime later 3 3 Cleaning All cleaning of the YD 380 should be performed carefully Remove gently all dus deposits with...
Страница 8: ...raining and tools required Level 1 4 1 PWB 4 2 Index Sensor 4 3 Track 00 Sensor 4 4 Write Protect Sensor 4 5 Media Sensor 4 6 In Use Lamp Level 2 4 7 Carrier 4 8 Index Lamp on Motor Control PWB 4 9 Dr...
Страница 9: ...ve the four screws securing the PWB to the frame casting 3 Remove the PWB 4 For reinstallation reverse the above procedure Note Make sure to mount the PWB below the carrier cover when reinstalling J4...
Страница 10: ...e the carrier cover 4 Lift up the lead clamps slightly and pullout the leads 5 Remove the In Use Lamp 6 Take out the screws for the front lever and carrier assem bly and remove the front lever and car...
Страница 11: ...tor Housing ssignment Connector Number t Index Sensor Screw with lock and washer M3 x 6 Lead Clamp Collet Shaft Figure 4 2 2 Connector Part No 1 Stepper 2 Head Load Solenoid 3 Drive Motor 4 Write Prot...
Страница 12: ...TIME DIV 0 1 ms VOLTS DIV CHI CH2 100 mV 4 Insert a CE Disk and turn the front lever to lock position 5 Load the read write heads against the disk and step t e head carriage assembly to track 2 Adjust...
Страница 13: ...Track 00 Sensor The voltage across PWB J3 A13 and G GND should be between 0 and 0 5 v 4 Power the drive down and up again Resets PWB memories 5 Check the following a Track 00 Sensor The voltage acros...
Страница 14: ...ads when cutting the tie wrap 4 Take out the Track 00 sensor assembly screw and remove the assembly Note Do not remove the sensor mounting screw or the adjust ment screw 5 For reinstallation reverse t...
Страница 15: ...seal over the write protect notch in the drive and the front lever in lock position a Write Protect Sensor The voltage across J3 A9 and G GND should be between 2 5 and 5 25 V 4 4 2 Removal and Replac...
Страница 16: ...ion reverse the above procedure 9 Perform a service check See 4 4 1 Write Protect Sensor Assembly lock and washer M3 x 6 Figure 4 4 1 4 5 Media Sensor Assembly Refer to Chapter 5 figure 3 4 5 1 Servic...
Страница 17: ...the carrier cover 4 Remove the In Use Lamp 5 Remove the media sensor assembly screws and the media sensor assembly 6 For reinstallation reverse the above procedure 7 Perform a service check See 4 5 1...
Страница 18: ...ng pin DS o 3 The lamp should light up Note When the lamp is lit thl voltage across J3 AlO and G GND should be betweel1 1 0 and 2 0 v 4 6 2 Removal and Replacement 1 Remove Housing 5 from the JB J3 Co...
Страница 19: ...front lever screws and remove the front lever 5 Remove the carrier assembly screws and remove the carrier assembly by pushing towards the rear of the drive See page 18 figure 4 7 1 6 For reinstallatio...
Страница 20: ...rocedure is included in the section on the drive motor assembly refer to 4 9 2 Front Lever Screw M 3 x 3 Collet Collet Guide Screw with washer M3x 4 In Use Lamp Mounting Screw with lock and washer M J...
Страница 21: ...he MOTOR ON signal on the interface to Low Level in order to start the drive motor 4 Load the read write heads against the disk 5 Connect a counter to TP3 and GND on the PWB 6 Verify that the index pu...
Страница 22: ...ad Load Solenoid Refer to Chapter 5 figure 3 4 10 1 Service Check 1 Look through the disk inlet on the front bezel to make sure the pad on the bottom of the bail is normal 2 Power up the drive 3 Inser...
Страница 23: ...t to damage the lead insulation when cutting the cable tie wraps 5 Carefully insert a strip of clean paper into the disk slot of the head carriage assembly from the front bezel 6 Remove the head load...
Страница 24: ...djusting screw on the Ready Off plate until the gap between the read write heads is within 0 3 to 0 7mm Turning the screw clockwise increases the gap counterclockwise decreases it 2 Perform a service...
Страница 25: ...rench and take the crankshaft out via the front bezel CAUTION Be careful not to lose the washer 4 For reinstallation reverse the above procedure Notes 1 When attaching the front lever push it against...
Страница 26: ...screws and the front bezel 4 For reinstallation reverse the above procedure Notes 1 When reinstalling the front bezel make sure that that the bosses on the bezel fit correctly intb the matching holes...
Страница 27: ...belt clamp C securing screw M2 6 from top of the frame 4 Remove the steel belt assembly screw M2 6 the top of the frame 5 Remove the stepper screw from the frame 6 Gently unloop the steel belt from th...
Страница 28: ...Assy Figure 4 13 1 1 Perform the position adjustment for the carriage assembly see 4 14 3 4 14 Head Carriage Assembly Refer to Chapter 5 Figure 3 CAUTION The head carriage assembly is factory adjusted...
Страница 29: ...ont lever to lock position 4 Load the read write heads against the disk and make sure the Track 00 signal Jl 26 is at Low level 0 to 0 4 V 5 Step the head carriage from Track 00 to 32 Obtain A B or B...
Страница 30: ...um of two hours for the drive with DC power on and the disk to adapt to the ambient temperature and humidity of the test area 2 Measurement a Refer to 4 14 1 for test equipment and set up proce dure b...
Страница 31: ...ad cable from the groove in the carrier base 3 Take out the Ready Off plate screws and remove the Ready Off plate See figure 4 10 1 4 Remove the stepper See 4 13 2 5 Remove the long guide bar clamps t...
Страница 32: ...ERT CH 2 ON TIME DIV 20 ms VOLTS DIV CH 1 CH 2 20 mV 3 Insert a CE disk and power up the drive 4 Seek the carriage 32 steps inwards s Load the read write heads against the disk Insert a screwdriver th...
Страница 33: ...nversion chart 8 Step the carriage from track 33 to track 32 and make sure the read output A B or B A is the same as in step 7 If not repeat step 6 9 Check that the read output from side one is within...
Страница 34: ...5 0 PARTS ASSEMBLES LOCATIONS J3 CONNECTOR J4 CONNECTOR J2 CONNECTOR Jl SIGNAL CONNECTOR PWB PWB ATTACHMENT SCREW 0008 o 00 0 DOC UI FRONT BEZEL YD 380 Top View Figure 1...
Страница 35: ...FRAME o DRIVE MOTOR ROTOR YO 380 Bottom View Figure 2 STEPPER o o HEAD LOAD SOLENOID...
Страница 36: ...CABLE READY OFF PLATE ATTACHMENT SCREW READY OFF PLATE HEAD CARRIAGE ASSY CARRIER ASSY ATTACHMENT SCREW J4 WRITE PROTECT SENSOR ASSY ATTACHMENT SCREW CARRIER ASSY MEDIA SENSOR ASSY YD 380 Top View wi...
Страница 37: ...SPINDLE HTJB o HEAD CABLE BAIL STEEL BELT MINI CLAMP TR 00 SENSOR ASSY YD 380 Top View with PWB and carrier assembly removed Figure 4...
Страница 38: ...I FRONT BEZEL IN USE INDICATOR LAMP YD 380 Front View Figure 5 MOUNTING SCREW TAPS...
Страница 39: ...6 0 TEST POINT CONNECTOR PIN ASSIGNMENTS 1710 4 j 10 020 t1 jO L U tT 1 500 D _ 3 2 I S CJO I 2 Jc J 4 _ _ I 10 2 D I...
Страница 40: ...ETURN 10 DRIVE SELECT 0 11 RETURN 12 DRIVE SELECT 1 13 RETURN 14 DRIVE SELECT 2 15 RETURN 16 MOTOR ON 17 RE TURN 18 DIRECTION SELECT 19 RETURN 20 STEP 21 RETURN 22 WRITE DATA 23 RETtIRN 24 WRITE GATE...
Страница 41: ...SENSOR PTK ORANGE B 9 W P SENSOR RET BLACK A 1 0 IN USE LED ANODE RED B 10 IN USE LED CATHODE BLACK A 11 INDEX SENSOR PTK BLUE B 11 INDEX SENSOR PTK RET BLACK A 12 TRACK 00 SENSOR GREEN B 12 TRACK 00...
Страница 42: ...50 01 Write Protect Sensor Assembly 145050 03 Media Sensor Assembly 148013 02 In Use Lamp Assembly Maintenance Level 2 PIN Part 128007 04 Carrier Assembly 148085 01 Drive Motor Assembly on Motor Contr...
Страница 43: ...nted on both the PWB and the schematics 2 The revision code of the attached schematics is as follows Part PIN Drawing Rev PWB 128012 11 138012 11 B Drive Motor 148085 01 138061 01 A Control PWB 3 For...
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Страница 46: ...n Use Lamp PIN 148013 02 _ or Media se eJ i PIN 1450 50 03 r r I t Lever Fron IN 13503 O P b el V Fronc ez 128004 01 P N I D ive Hotor ___ PIN 148085 01 Write Protect P N 145050 01 W 1 j Index Sens r...
Страница 47: ...dure 10 3 1 Dirty head surfaces can cause read errors and damage the magnetic surfece of a disk If these problems begin to occur use the cleaning disk to clean the heads 10 3 2 Procedure 1 Power up th...
Страница 48: ...even after 10 hours of cleaning 8 The ife span of the cleaning disk is about one hour of usage after which the effect is lost due to silting of the disk surface 10 3 3 Head Cleaning as a Part of Prev...
