MTR221/A - MTR221/A DHHS
MANUALE ISTRUZIONI / INSTRUCTION MANUAL
Modello/Model R221/A - R221/A DHHS
TROUBLESHOOTING
35
R221/A - R221/A DHHS - Troubleshooting
Ralco srl
TROUBLESHOOTING
A faulty Collimator must not be used until it is repaired and checked.
The use of a faulty collimator might impair the safety of the operator and patient.
Before returning the collimator to Ralco for repair, please make sure that the fault is not caused
by one of the problems listed below. If the indications provided fail to solve your fault, please
make sure that you obtain a Return number (RMA) from Ralco for the collimator, see
Chapter - G
ENERAL, paragraph Repairs.
Light Source
Centering
Field Size
Shutters
Problem Cause Solution
The light source fails to
switch ON
Collimator supplied
incorrectly
Check: Supply/Tension/Current/
Polarity/Fuses
Faulty light source
Check item
Replace if necessary, see
Chapter- S
UBSTITUTIONS
Faulty timer
Check timer supply
Substitute if necessary, see
Chapter- S
UBSTITUTIONS
Faulty ON/OFF push-
button
Check contact
Substitute if necessary
Light source fails to
switch OFF
Faulty timer Substitute timer
Push-button is
shorted
Substitute push-button
Problem Cause Solution
The light field of the
collimator is not
centered
The mirror or light
source are not
positioned correctly
See Chapter- CALIBRATION,
paragraph Light Field to X-ray Field
Alignment
Problem Cause Solution
Faulty field size
indication
Knobs are not
regulated
Regulate, see Chapter-
A
DJUSTMENTS
Problem Cause Solution
Shutters close Friction is loose
Regulate, see Chapter-
A
DJUSTMENTS
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