
B-63354EN/04 TABLE OF CONTENTS
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4.3 10BASE-T CONNECTOR (CD38) PIN ASSIGNMENTS ...........................327
4.4 TWISTED-PAIR CABLE SPECIFICATION................................................328
4.4.1 Cable Connection ................................................................................................ 328
4.4.2 Cable Materials.................................................................................................... 329
4.4.3 Connector Specification ...................................................................................... 329
4.5 ELECTRICAL NOISE COUNTERMEASURES..........................................330
4.5.1 Separating Signal Lines ....................................................................................... 330
4.5.2 Clamping and Shielding Cables .......................................................................... 330
4.5.3 Grounding the Network....................................................................................... 333
VI. MAINTENANCE
1 SERIES 16I/18I/21I-A/PMI MAINTENENCE INFORMATION.............337
1.1 LCD-MOUNTED TYPE ETHERNET/DATA SERVER BOARD..................338
1.1.1 Component Layout .............................................................................................. 338
1.1.2 LED Indications................................................................................................... 342
1.2 STAND-ALONE TYPE ETHERNET BOARD .............................................344
1.2.1 Component Layout .............................................................................................. 344
1.2.2 LED Indications................................................................................................... 345
1.3 STAND-ALONE TYPE DATA SERVER BOARD .......................................347
1.3.1 Component Layout .............................................................................................. 347
1.3.2 Description of LED Indication ............................................................................ 348
1.4 HOW TO INVESTIGATE THE COMMUNICATION LINE STATUS ...........351
1.4.1 Determining the Communications Line Status.................................................... 353
2 Series 15i-A MAINTENANCE INFORMATION ..................................354
2.1 ETHERNEAT BOARD ...............................................................................355
2.1.1 Component Layout .............................................................................................. 355
2.1.2 LED Indications................................................................................................... 356
2.2 DATA SERVER BOARD............................................................................358
2.2.1 Component Layout .............................................................................................. 358
2.2.2 LED Indications................................................................................................... 360
2.3 HOW TO INVESTIGATE THE COMMUNICATION LINE STATUS ...........362
2.3.1 Determining the Communications Line Status.................................................... 364
3 HARD DISK DRIVE UNIT MAINTENANCE INFORMATION..............365
3.1 Component Layout ....................................................................................366
3.2 LED Indications..........................................................................................367
3.3 Changing the Fuse.....................................................................................368