Omron V022-E3-1 operation manual 8-3Maintenance of the NT600S, Section, Spare PT, Backlight

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8-3 Maintenance of the NT600S

	Carry out maintenance work in order to ensure that the NT600S is always used in
	its optimum condition.
	WARNING Do not attempt to take the NT600S apart and do not touch any internal parts while
	the power is being supplied. Doing either of these may result in electrical shock.
Spare PT	It is advisable to have a spare NT600S available to minimize system downtime in
	the event of an NT600S failure or if the screen display becomes difficult to read due
	to deterioration of the display unit.
Backlight	When the backlight in the display is getting dim and the screen cannot be read eas-
	ily, replace the backlight. The backlight can be replaced at the rear of the NT600S
	while￿	it is mounted in an operation panel.

Models that use a backlight

NT600S-ST121-EV￿

NT600S-ST121B-EV￿

Replaceable Backlight Model

￿NT600S-CFL01

Guide to Backlight Replacement

Under normal conditions it can be assumed that the backlight will need to re- placed after about 20,000 hours. However, the life of the backlight does vary in accordance with the environment in which it is used and it should be replaced when it is getting dim and the screen is getting hard to read.

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