Emerson 2468CD, 2468CB manual 2-29, Indication

Hydrastep 2468CB and 2468CD Manual 2468CB & 2468CD Dual Power Supply Version

Indication	Fault(s)	Analysis and Corrective Action
State 7	No power to one	Only odd LEDs illuminating indicates a problem with
Only odd or	input board or a	the left hand input board. Only even LEDs illuminating
	power supply fault	indicates a problem with the right hand input board.
even LEDs
illuminated		Check the wiring to the unit from the mains supply
		then check the following:
		Fuse and fuse rating
		Voltage and voltage setting
		(See Section 2.2 & 2.3 of this chapter)
		If none of these checks locate the problem and the
		correct mains supply voltage is present at the input
		board terminals then a circuit fault exists and
		replacement of the faulty input board is required.
State 8	Wrong setting of	Refer to Section 2.3 of this chapter and ensure that the
Chequered	Number of	switch is set correctly. If the display still shows a
	Electrodes switch	chequered pattern then a circuit fault exists on the
pattern on RED
	on display board	display board and the board will need replacing.
& GREEN LED
display
State 9	Wrong setting of
ON/OFF pattern	Number of
on RED &	Electrodes switch	As above
	or linking on LK2,
GREEN LED
display	LK3, LK4, LK5
	incorrect on display
	board
State 10
Lower	As above	As above
electrodes not
displayed

Table 2.3 - Fault analysis/corrective action chart (continued)

24685034 2-29