Instruction manual

NGA 2000 MLT Hardware
REMOVAL / REPLACEMENT OF COMPONENTS
12 - 3
Emerson Process Management GmbH & Co. OHG
Instruction Manual
90002929
07/2006
12.3 Replacement of Buffer Battery on the ACU 02
Take care of the safety instructions as given at the beginning of this manual
while working at and inside the instruments!
Working inside the instruments is subject to briefed personnel familiar with
potential risks!
12.3.1 Removal of ACU 02
Use the following steps to remove the ACU 02 board (see Fig. 1-31, too):
❍ Open the front panel / housing (cf. Section 15).
For analyzers:
❍ Remove the cable (ACU - AFP 01 connection) from the circuit board ACU 02.
❍ Push the card ejector for the ACU 02 downwards and remove the board.
REPLACEMENT OF BUFFER BATTERY OF ACU 02
Fig. 12-1: Controller Board ACU (partial view, component side)
Battery Jumper
(ACU 01: P17 / ACU 02: P23)
Connection
to LCD dispaly
+
Buffer battery
on soldering pins
-
(ACU01: P17 /
ACU02: P23)
(ACU01: P28 /
ACU02: P1)
(ACU01: P27 /
ACU02: P20)