Planned maintenance check list
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Document no. M1125633-06
2 Planned maintenance check list
2.1 Visual inspection/preparation
2.1.1 General
WARNING Wear a static control wrist strap when handling PC boards. Electrostatic
discharge may damage components on the board.
Make sure that the monitor is switched to standby.
Disconnect the mains power cord. If the monitor is connected to the Datex-Ohmeda
Network, disconnect the Mon-Net cable from CPU board, B-CPU6. If the Memory Module,
E-MEM is connected, remove any memory cards.
1. Check all the units visually. Check that all parts are intact and that the cables and screws
are connected and tightened properly.
Especially check the following parts:
− Video displays: the display power cord is locked to the display.
− F-CU5(P), F-CPU and N-AC: all the screws and the equipotential tap on the N-AC are
tightened properly.
− F-CU8: the equipotential tap and all the screws are tightened properly.
Check that modules go in smoothly and lock up properly in all module slots.
2. Replace the batteries, if necessary.
The manufacturer recommendations are:
− Replace the lead-acid battery in the module frames’ F-CU5(P)/ F-CU8 power supply
unit every 4 years.
− Replace the SRAM/Timekeeper battery on the CPU board every 8 years.
NOTE: The Factory Reset must be performed if the SRAM/Timekeeper battery, or the
SRAM/Timekeeper chip is replaced.
3. Clean or replace the fan filters in the 5-Module Frame, F-CU5(P) and Central Processor
Unit, F-CPU or in the 8-Module Frame, F-CU8.
4. F-CU8: Check that the fuses are of the correct rating.
"
2.1.2 Extension Frame, F-EXT4
1. If the F-EXT4 contains a fan, clean or replace the fan filter.
"
2.1.3 Compact Airway Module, E-CXX
1. Detach the module box.
Check that all cables and tubes are connected properly and that there are no loose
objects inside the module.
NOTE: The tubes connected to the Oxygen board pressure transducers should not be pressed
too deep.
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