Service Life, Consumables, and Replacement Parts
Service life refers to the standard period the unit or individual components can be expected to be usable as long as
inspection and maintenance procedures specified by J. MORITA MFG. CORP. are followed.
Component Service Life List refers to components that can be expected to wear out, degrade or break depending
on frequency and conditions of usage, which greatly affects how long these components retain their performance
standards.
Consumables refer to parts and components that inevitably are degraded and need to be replaced periodically and
are not covered by the warranty.
The product warranty is good for 3 years after delivery.
The components on the Component Service Life List that are noted “Yes” are critical for safety. These
components must be inspected and replaced or have appropriate maintenance performed as necessary without fail
before their standard service life expires.
The user must pay for parts and repairs that are performed after the warranty expires or the part has passed its
specified service life. However, if a maintenance contract has been agreed to, this will depend on the contents of
that contract.
For details concerning regular inspection and parts replacements, contact your local dealer or J. MORITA
OFFICE.
Component Service Life List
Components Standard Service Life
Critical Safety
Component
Remarks
Moving Parts
(for Arm and Lift)
45,000 exposures or 6 years
whichever comes first
Yes
Including cables, bearings,
etc.
(for Arm and Lift)
45,000 exposures or 6 years
whichever comes first
N/A
X-ray Tube
*1
15,000 exposures N/A
High Voltage Unit 3 years N/A
X-ray Detector
*2
3 years N/A
Printed Circuit Boards 6 years Yes
LCD Display 6 years N/A
Operation Switches
3 years N/A
Patient Handles 6 years Yes
Temple Stabilizers 3 years N/A
Ear Rod Plates 3 years N/A
Nasion Plate 3 years N/A
*1
The service life of the X-ray tube depends on the number and length of exposures it is used for as well as the
output (tube voltage and current) and the time between exposures. Of these factors, the most critical is the
number of exposures which degrades the anode. As the anode gradually degrades, stable output is lost, and the
circuit protection system detects errors and terminates X-ray emission.
*2
The service life of the X-ray detector mainly depends on the ambient conditions (temperature and humidity)
where it is used and the accumulated amount of X radiation it receives. As the accumulated amount of
received X radiation increases, the sensitivity of the detector is gradually degraded. High humidity can also
lead to degradation. Semiconductor degradation caused by X radiation and the disparities for individual
semiconductor units can cause parts of the detector to lose sensitivity. Loss of sensitivity can be remedied to
some degree by performing sensitivity compensation and calibration during regular inspections, but partial
sensitivity degradation cannot always be corrected.
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