Schiller AT-1 - ECG Interface Board MK 11- 2

Chapter 4
Module Removal and Revlacement
SCHILLER AT-1 3-ChaMel ECG Unit
SERVICE WDBOOK lssue 3 Seprember 1999
ECG Interface Board iMK 11- 2
The ECG Interface is mounted above the Control and Power Supply boardMK 11-1 andis secured
to six spacers.
Prerequisite
The Warnings and Cauuons at the beginning of the Gapter must be observed.
The Top Assembly must be removed and all external cable assemblies disconnected.
Took and Test Equipment
Cross-bladed posi-dnve screwdnver
Parts
ECG Amplifier board. Part number as detailed in Chapter 6.
Board Removai
CAUTION
THE ECG AMPLIFIER CONTAINS STATIC SENSnIVE CMOS COMPONENTS. OBSERVE
ANTISTATIC PRECAUTIONS.
To remove the ECG Amplifier proceed as follows:
1. Unscrew the six screws securing the board to the spacers.
2. Gently raise the board to gain access to the cable assembly to the Control board and remove
the connector. Remove the board.
Board Replacement
1. Place the ECG Amplifier board component side down over the six spacers and connect the
cable assembly to the Conrrol board MK 1-1 1. Place the board so that the patient cable
connector
is positioned in the cutout on the side panel.
2. Secure the board to the six spacer supports with the retaining screws.
Checks and Tests after Repiacement
To prove the integnty of the repaced board carry out the following functional check procedure:
Switchon
the unit andconnectaSCHELER pauentcable to theECGconnector. Connectasuitable
patient
simulator io the ECG connector and press 'MAN START. Ensure that all the leads are
printed.
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