YE Data YD-380 5.25 inch HH HD Floppy.pdf

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4.9.2 Removal and Replacement1. Remove the PWB (See 4.1).2. Remove J3 connector housing 3. (See page 9, figure 4.2.2)3. Remove the carrier assembly. (See page 17, 4.7.1)4. Remove the drive motor screws and remove the motor.5. For reinstallation, reverse the above procedure.6. Perform a service check (See page 20, 4.9.1).4.9.3 Adjustment1. Adjust" the variable resistor on the motor control PWB witha Phillips head screwdriver until the index.period is166.7 ms ±1.5% (refer to figure 4.9.2)4.10. Head Load Solenoid (Refer to Chapter 5, figure 3)4.10.1 Service Check1. Look through the disk inlet on the front bezel to makesure the pad on the bottom of the bail is normal."2. Power up the drive.3. Insert a disk and turn the front lever to lock position.4. Load the read/write heads against the disk.5. Make sure that there i~ a gap between the bail and thecarriage arm throughout the carriage travel.6. Power down the drive.7. Remove the disk and turn the front lever to lock position.8. Look through the disk inlet in the front bezel and verifythat the gap between the unloaded read/write heads iswithin 0.3 to 0.7 nun. If the gap is larger, perform theadjustment described in 4.10.3.
4.10.2 Removal and Replacement1. Remove the PWB (See 4.1).2. Take out the screws attaching the Ready/Off plate to thecarrier assembly and remove the Ready/Off plate.3. Remove J3 connector housing 2. (See page 9. figure 4.2.2)4. Cut the J3 cable tie wrap with cutters and remove theleads from the miniclamp.r---------- CAUTION ----------....,Be careful not to damage the lead insulation whencutting the cable tie wraps.5. Carefully insert a strip of clean paper into the diskslot of the head/carriage assembly from the front bezel.6. Remove the head load solenoid screws. Lift up thecarriage arm hanger slightly with your finger.7. Slide out the solenoid by turning it cloekwise.8. For reinstallation, reverse the above procedure.Note:When reinstalling the head load solenoid, make surethe bail rests under the carriage arm hanger.9. Perform the adjustment on page 24, section 4.10.3.
Page 1 and 2: VY·E DATAMAINTENANCE MANUALYD-380H
Page 3 and 4: YD-380 Maintenance ManualTABLE OF C
Page 5 and 6: 1.0 INTRODUCTIONThis manual describ
Page 7 and 8: 3 .0 PREVENTIVE MAINTENANCE3.1 Gene
Page 9 and 10: [ Levell]4.1 PWB (Refer to Chapter
Page 11 and 12: Carrier PlateSpringFront Bezel Side
Page 13 and 14: 6. Verify that the timing between':
Page 15 and 16: 4.4 Write Protect Sensor (See Chapt
Page 17 and 18: 4.5.2 Removal and Replacement1. Rem
Page 19 and 20: [ Level 2 ]4.7 Carrier Assembly (Se
Page 21: 4.9 Drive Motor Assembly (Refer to
Page 25 and 26: 4.11 Front Lever (Refer to Chapter
Page 27 and 28: 4.13 Stepper Assembly (Refer to Cha
Page 29 and 30: - Connect channel 2 to PWB test poi
Page 31 and 32: c) Compensation (for humidity only)
Page 33 and 34: 6. In step 5 above, move the steppe
Page 35 and 36: FRAMESTEPPERoooDRIVE MOTORROTORHEAD
Page 37 and 38: HEADCABLEBAILMINI CLAMPoTR 00SENSOR
Page 39 and 40: 6.0 TEST POINT/CONNECTOR PIN ASSIGN
Page 41 and 42: TRANSDUCER - J3Pi"n No. Signal Name
Page 43: 8.0 SCHEMATIC DIAGRAMS1. Revision o
Page 46 and 47: 9.0PWB 11P!N 128011-- YIn Use LampP
Page 48: 6. If it appears that cleaning is n

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