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Appendix 1 Maintenance and Inspection

Periodic Inspection

Check the following items periodically, once every six months. Also, check these points if any surrounding conditions or any aspect of the environmental changes.

 

Table A.1

Periodic Inspection Items

 

 

 

 

 

 

Inspection item

Inspection

 

Criterion

Resolution procedure

 

 

 

 

 

Power supply systems

Measure the power-supply

 

Voltages must be within the

Adjust the input voltages to be

(T2N power supply/MAU

voltage at the power-supply

 

stipulated ranges.

within the stipulated ranges.

power supply)

terminals.

 

 

 

 

Check for loose screws at the

There must be no

Turn off (remove power from)

 

power-supply terminals.

 

looseness.

the power supply and tighten

 

 

 

 

down the screws with a

 

 

 

 

screwdriver.

 

Check for damage to the

 

There must be no damage.

Turn off (remove power from)

 

power-supply cables.

 

 

the power supply and replace

 

 

 

 

the damaged cables.

 

 

 

 

Installation state

Is the module firmly locked in

There must be no

First press the module.

 

place?

 

looseness or play.

 

 

 

 

 

Transmission cable

10BASE5: Are the AUI cables

There must be no

First press the cable firmly into

connections

firmly locked in place?

 

looseness or play.

the connector and then slide

 

 

 

The 10BASE5 connector

the slide latch to the locked

 

 

 

position.

 

 

 

slide latches must be in

 

 

 

 

 

 

 

their locked positions.

 

 

10BASE2: Are the coaxial

 

There must be no

First press the T-connector

 

cables firmly locked in place?

looseness or play.

firmly into position and then

 

 

 

The T-connector locks

engage the T-connector lock.

 

 

 

 

 

 

 

must be engaged.

 

 

10BASE-T: Are the twisted pair

There must be no

First press the twisted pair

 

cables firmly locked in place?

looseness or play.

cable into modular connector.

 

 

 

The modular connector

 

 

 

 

locks must be engaged.

 

 

 

 

 

 

Transmission cable wiring

10BASE5/2/-T: Check for

 

There must be no damage.

Stop the system, turn off

(See section 9.4,

damage to the cables.

 

 

(remove power from) the power

"Network Wiring".)

 

 

 

supply and replace the

 

 

 

 

damaged cables.

 

Are the cables installed near

There must be no power or

Separate the cables from the

 

any power or other cables?

 

other similar cables in the

power lines.

 

 

 

vicinity.

Shield the cables.

 

 

 

 

 

 

 

 

 

Ambient conditions

Verify that temperature,

 

The values must be within

Improve the environment so

 

humidity, vibration, and dust

 

the ranges from the

that all aspects are within the

 

levels are all within the

 

general specifications for

ranges stipulated in the

 

stipulated ranges.

 

the module.

specifications.

 

 

 

 

 

169

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Toshiba T2N instruction manual Appendix 1 Maintenance and Inspection, Periodic Inspection, Table A.1