Introduction; Models And Model Numbers; Special Tools - Panasonic JU-253-T Service Manual

PART. 1
1. INTRODUCTION
This service manual consists of two parts. Part 1 covers maintenance description, adjustment procedures,
and trouble analysis and Part 2 covers disassembly and reassembly procedures, parts list, and PCB circuits.
Refer to the highlighted applicable items, and perform maintenance work on the Floppy Disk Drive (FDD).
Note:
This service manual is prepared for maintenace of the Floppy Disk Drive.
Do not use this manual for judging pass or fail criteria in inspections.
2. MODELS AND MODEL NUMBERS
2.1 3.5-inch FOO Series
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67.5TPI - - - -
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JU-31X - - - - . - - JU-312
c=
JU-313
L _
JU-314
JU-32X JU-322
E
JU-323
JU-323A
JU-324
JU-36X JU-362
E
JU-363
JU-363A
JU-364
JU-38X - - - - JU-386
JU-39X - - - - JU-394
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... : -...,---
JU-252A
JU-253A
•
3. SPECIAL TOOLS
The following special tools are used for FDD maintenance.
TABLE 3.1
P/No.
Tool
JU-252A JU-31 X,32X,36X,
JU-253A JU-323A,363A
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YTFDD-SB35
Test Pin Jig For PCB YTFDD-TPIN25 YTFDD-TPIN35
DAD Alignment Tester
Oscilloscope (SOM Hz}
Probe (10:1)
Frequenc Counter
Note:
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DAD : Dynamic Alignment Diskette
CE : Cats Eye
-1-
JU-38X
JU-39X
2DD I 2HD
Quantity
1-2
1-2
3