2002 Gambro Renal Products, Inc. P/N 306100068 Rev A
Prisma
System
Scale Diagnose and Calibration Procedures
BEFORE YOU BEGIN
!
Read complete description of Scale Diagnose and Scale Calibration procedures in
Prisma Service Manual
!
These instructions are not meant to replace the Prisma Service Manual instructions
ENTER SERVICE MODE
!
Insure Prisma machine is turned off
!
Simultaneously press and hold the softkeys 4 and 9 as shown below. Press the power
switch on and hold the softkeys until the PRISMA Service Screen displays.
DIAGNOSE SCALES
!
Access Service Mode per above procedure
!
Press Diagnose softkey to access Service-Diagnose Screens (for a complete description
of “Service-Diagnose Screens”, consult Prisma Service Manual, page 5-11).
!
Press Scales softkey to access the diagnose screen for scales
!
Observe values displayed for A/D and Averaged-grams displayed on Prisma screen. The
values should be as follows:
o
A/D values: The A/D Monitor and Control readings are displayed as bits. Each bit
represents the voltage signal at the scale and each bit is approximately equal to 1
gram. When there is no weight on the scale, -3000, +500 should be displayed as
the A/D control and monitor readings.
o
Averaged-grams: When no weight is applied, the Averaged-grams readings
should be 0, + 7 grams. If you wish to check the calibration of the scales, you can
4
9
