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

Page 49
Image 49
Emerson 2468CD, 2468CB manual 2-29, Indication