Mic ETS2228 Uživatelský manuál stáhnout pdf (Strana 32)

ETS2228 Maintenance Manual

3、Key-press fault maintenance procedure

Figure 13 Key-press fault maintenance procedure

YES

power-on and startup

Does LCD respond after

the key is pressed?

Check if keys are reliably connected with

the keypad and remove faults.

End

Doed LCD show value of

the key pressed?

Does the keypad respond to

data corrrectly?

Replace the keypad or the mechenical part

upper-lid on the fixed station.

Check inter-board connection power

and replace the fault cable.

YES

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Mic ETS2228 Uživatelský manuál Strana 32