Philips CARDIOMD, Service Manual

Page: 430 / 466

Repair Procedures
12-82
„
CardioMD Service Manual
1MAN0158-H11 04-2005 CSIP Level 1
Before Beginning
Before starting the alignment, ensure that the CardioMD is powered up and that the CardioMD
software is running on the acquisition PC.
Checking Which Transmission Scanner needs Aligning
If the reason for aligning a transmission scanner is the line source offset error message, you need
to establish which of the transmission scanners needs aligning. Proceed as follows:
Procedure Details
1. On the acquisition PC, locate the folder
C:\cardiocam\Calibrations\Line
Source
.
This folder contains one or two files with
names of the form lsparams.<collimator type>,
that is,
lsparams.LEHR
or
lsparams.LEGP
.
2. Open the file corresponding to the
collimator currently mounted on the
CardioMD system.
The contents of the file look similar to the
example shown to the right.
Note . The entry Lsoffset[0] gives the line
source offset value for the line source
exposing detector 1, that is, transmission
scanner 2. Lsoffset[1] gives the line source
offset for the line source exposing detector 2,
that is, transmission scanner 1.
In the example, the entry
Lsoffset[1]
indicates that the offset problem concerns
transmission scanner 1 (offset value exceeds
+/– 5 mm).
3. Click the Close button to exit the Notepad
program.
Aligning Transmission Scanner
Procedure Details
1. Remove the line source compartment
covers from the transmission scanner to be
aligned.
Instructions are provided in section 12.5.3.1,
page 12-38.
Next, you need to position the line source at
the center of the line source compartment.
One way of accomplishing this is to initiate a
Line source 2 offset
Line source 1 offset