This X-ray equipment may be dangerous to patients and operators
unless safe exposure factors and operating instructions are observed.
0501(REV.0)
R
Page 2
INDEX
PAGE
[ 1 ] INTRODUCTION ---------------------------------------------------- 1
[ 2 ] LAYOUT OF CONTROLS------------------------------------------ 3
[ 3 ] FUNCTION OF CONTROLS --------------------------------------4
[ 4 ] OPERATING PROCEDURES --------------------------------------6
[ 5 ] OPTIONAL HAND EXPOSURE SWITCH ---------------------- 6
[ 6 ] DIGITAL IMAGING SYSTEM ------------------------------------ 7
[ 7 ] CLEANING AND DISINFECTION-------------------------------- 7
[ 8 ] DISPOSAL OF USED FILM AND CCD COVERS ------------- 7
[ 9 ] ERROR CODES ------------------------------------------------------ 8
[ 10 ] MAINTENANCE --------------------------------------------------- 9
[ 11 ] TECHNICAL DATA ----------------------------------------------- 10
[ 1 ] INTRODUCTION
1. GENERAL
PHOT-X II MODEL 303 is a extraoral source dental radiographic x-ray unit. This unit works
as a diagnostic purpose x-ray source for human teeth with resultant image recorded on intraoral
dental x-ray film or image receptor.
This manual provides information for the operation and maintenance procedures and technical
specifications for PHOT-X II MODEL 303 dental x-ray. The instructions contained in this book
should be thoroughly read and understood before operation.
PHOT-X II MODEL 303 has no user serviceable items. Maintenance and repair should be
performed by qualified dealer service personnel.
2. PARTS IDENTIFICATION OF X-RAY SYSTEM “PHOT-X II” MODEL 303
a. Tube housing assembly: 303-H
b. X-ray controls: 303-CM (main controller), 303-CS (sub controller)
c. Cones: 303-R (regular), 303-L (long), 303-REC (rectangular)
d. Balance arm: 303-A
3. COMPLIANCE WITH STANDARD
BELMONT PHOT-X II MODEL 303 x-ray unit complies with the following standard.
a. Electrical and Mechanical Safety
IEC60601-1 : 1988, UL60601-1 : 2003, IEC60601-2-7 : 1998
IEC60601-2-28 : 1993, IEC60601-2-32 : 1994
b. Radiation Safety
21 CFR 1020.30
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Page 3
4. CLASSIFICATION
4-1. According to Section 513 of Federal Food, Drug and Cosmetic Act and 21 CFR Part 806,
BELMONT PHOT-X II MODEL 303 is classified as CLASS II Medical Device.
4-2. According to IEC60601-1, BELMONT PHOT-X II MODEL 303 is classified as follows.
a. Protection against electric shock: Class I Equipment, Type B Applied Parts
b. Protection against ingress of water : Ordinary
c. Mode of operation : Intermittent Operation (Duty Cycle = 1 : 50)
d. Equipment not suitable for use in the presence of a flammable anesthetic mixture with
air or with oxygen or nitrous oxide.
5. SYMBOL
In this book, on the labels or on the control panel of PHOT-X II MODEL 303, following symbols
are used. Confirm the meaning of each symbol.
Consult written
Instructions in
Manuals
Protection
Grounding
Upper Incisor
Lower Incisor
Digital
Imaging
Regular
Cone
Protection
against electric
shock : Type B
Exposure
Switch
Upper Cuspid
& Pre Molar
Lower Cuspid
& Pre Molar
Child
Patient
Long
Cone
ON (POWER)
X-ray
Emission
Upper Molar
Lower Molar
& Bite Wing
Adult
Patient
OFF (POWER)
Ready
Occlusal
Bite Wing
Large
Patient
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Page 4
[ 2 ] LAYOUT OF CONTROLS
1
10
1112
a
b
C
F
D
16
60
70
kV
1314
4 7
mA
3
P
4
T1T5
5
INC
INC
T2
CUS & PM
CUS
T3
MLR
MLR
&
PM
OCC
T4
BW
15
9
6
8
7
17
2
qMain Power Switch!0 Cone Type Selection Switch
18
wReady Light!1 Film Speed Selection Switch
eExposure Time Adjusting Switch (Down)!2 Digital Imaging Switch
rExposure Time Adjusting Switch (Up)!3 kV Selection Switch
tTooth Selection Switch (T1)!4 mA Selection Switch
yTooth Selection Switch (T2)!5 Patient Size Selection Switch
uTooth Selection Switch (T3)!6 Exposure Time Display Window
i Tooth Selection Switch (T4)!7 Exposure Warning Light
oTooth Selection Switch (T5)!8 Exposure Switch
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Page 5
[ 3 ] FUNCTION OF CONTROLS
qMain Power Switch
Pushing the upper side of this switch to the ON position energizes the x-ray unit. (Ready light
and pre-select lights for cone type, film or digital, kV, mA, and patient size illuminate.)
It is recommended to keep this switch OFF when the unit is not in use, in order to prevent an
accidental exposure.
IMPORTANT : To prevent the risk of an accidental exposure, push the lower side
of this switch to the OFF position, when the unit is not in use.
wReady Light
This light illuminates when the line voltage is within operable range (108 ~ 132Vac).
When this light is not on, exposure can not be made.
e rExposure Time Adjusting Switches
By momentarily pushing the (or ) switch, the exposure time displayed increases (or decreases)
by one increment. By keeping the switch depressed more 2 sec., the exposure time displayed
increases (or decreases) continuously until the switch is released.
Model 303 has the following 24 exposure time settings :
t ~ oTooth Selection Switches (T1 ~ T5)
Pushing one of these switches sets the exposure time automatically for the following !0 ~ !5.
t T1 : Incisor of Mandible
y T2 : Incisor of Maxilla, Cuspid & Premolar of Mandible
u T3 : Cuspid & Premolar of Maxilla, Molars of Mandible, Bitewing
i T4 : Molar of Maxilla, Bitewing Molars
o T5 : Occlusal
If the T1 switch t is depressed more than 3 sec. unit goes into “ Lock Mode”. In lock mode,
the only functional switch is the power switch. To exit from the lock mode, depress the T1 switch
more than 3 sec. again.
!0Cone Type Selection Switch
Depressing this switch for more than 2 sec. selects the cone type : 8” standard cone or 12”
optional long cone. (If the optional rectangular cone is to be used, select the 8” standard cone setting.)
!1Film Speed Selection Switch
a. PHOT-X II has 16 film speed settings. (F.00 ~ F.15)
Two speed settings are pre-set at the factory (a & b) and can be selected with switch !1.
a = Film speed No. F.09 (equivalent to ISO speed group “ D”, or Kodak Ultra-Speed film)
b = Film speed No. F.05 (equivalent to ISO speed group “ F/E”, or Kodak InSight film)
b. Pushing this switch momentarily displays the selected film speed setting in the ExposureTime Display Window!6.
Depressing this switch for more than 2 sec. changes the film type being selected.
c. If the Digital Imaging Switch!2 is depressed, both of the film speed indicating lights (a & b)
are turned off.
!2Digital Imaging Switch
If a digital imaging system is used, shorter exposure time is often required. PHOT-X II has 16
speeds for digital imaging (d.00 ~ d.15). Pushing this switch momentarily displays the speed
being selected in the Exposure Time Display Window!6. With the factory speed setting d.06,
the exposure time becomes half of F.06 setting.
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Page 6
TABLE 1. Speed Setting and Exposure Time (Regular Cone) [ unit : sec.]
Speed
Setting
F.09
F.05
d.06
kV
60
70
60
70
60
70
mA
4
7
4
7
4
7
4
7
4
7
4
7
T1T2
0.16
0.08
0.10
0.06
0.06
0.03
0.04
0.02
0.04
0.02
0.03
0.02
0.16
0.10
0.13
0.08
0.08
0.04
0.05
0.03
0.05
0.03
0.03
0.02
Child
T3
0.20
0.13
0.16
0.08
0.08
0.05
0.06
0.04
0.05
0.03
0.04
0.02
T4
0.25
0.13
0.16
0.10
0.10
0.06
0.08
0.04
0.06
0.04
0.04
0.03
T5
0.32
0.20
0.25
0.16
0.16
0.08
0.10
0.06
0.10
0.10
0.06
0.04
T1T2
0.25
0.13
0.16
0.10
0.10
0.06
0.08
0.04
0.06
0.04
0.05
0.03
AdultLarge Adult
0.32
0.16
0.20
0.13
0.13
0.06
0.08
0.05
0.08
0.04
0.05
0.03
T3
0.32
0.20
0.25
0.16
0.16
0.08
0.10
0.06
0.10
0.05
0.06
0.04
T4
0.40
0.25
0.32
0.16
0.16
0.10
0.13
0.06
0.10
0.06
0.08
0.04
T5
0.63
0.32
0.40
0.25
0.25
0.13
0.16
0.10
0.16
0.08
0.10
0.06
T1T2
0.32
0.16
0.20
0.13
0.13
0.08
0.10
0.05
0.08
0.05
0.06
0.03
0.40
0.20
0.25
0.16
0.16
0.08
0.10
0.06
0.10
0.05
0.06
0.04
T3
0.40
0.25
0.32
0.20
0.20
0.10
0.13
0.08
0.10
0.06
0.08
0.05
T4
0.50
0.32
0.40
0.20
0.20
0.13
0.16
0.08
0.13
0.08
0.10
0.05
T5
0.80
0.40
0.50
0.32
0.32
0.16
0.20
0.13
0.20
0.10
0.13
0.08
TABLE 2. Speed Setting and Exposure Time (Long Cone) [ unit : sec.]
Speed
Setting
F.09
F.05
d.06
kV
60
70
60
70
60
70
mA
4
7
4
7
4
7
4
7
4
7
4
7
T1T2
0.40
0.25
0.32
0.16
0.16
0.10
0.13
0.06
0.10
0.06
0.08
0.04
0.50
0.25
0.32
0.20
0.20
0.10
0.13
0.08
0.13
0.08
0.08
0.05
Child
T3
0.63
0.32
0.40
0.25
0.25
0.13
0.16
0.10
0.16
0.08
0.10
0.06
T4
0.63
0.40
0.50
0.25
0.25
0.16
0.20
0.10
0.16
0.10
0.13
0.06
T5
1.00
0.50
0.63
0.40
0.40
0.25
0.25
0.16
0.25
0.13
0.16
0.10
T1T2
0.63
0.40
0.50
0.25
0.25
0.16
0.20
0.10
0.16
0.10
0.13
0.06
AdultLarge Adult
0.80
0.50
0.63
0.32
0.32
0.20
0.25
0.13
0.20
0.13
0.16
0.08
T3
1.00
0.50
0.63
0.40
0.40
0.25
0.25
0.16
0.25
0.13
0.16
0.10
T4
1.00
0.63
0.80
0.50
0.50
0.25
0.32
0.20
0.25
0.16
0.20
0.13
T5
1.60
1.00
1.25
0.63
0.63
0.40
0.50
0.25
0.40
0.25
0.32
0.16
T1T2
0.80
0.50
0.63
0.32
0.32
0.20
0.25
0.13
0.20
0.13
0.16
0.08
1.00
0.63
0.80
0.40
0.40
0.25
0.32
0.16
0.25
0.16
0.20
0.10
T3
1.25
0.63
0.80
0.50
0.50
0.25
0.32
0.20
0.32
0.16
0.20
0.13
T4
1.25
0.80
1.00
0.50
0.63
0.32
0.40
0.25
0.32
0.20
0.25
0.13
T5
2.00
1.25
1.60
0.80
0.80
0.50
0.63
0.32
0.50
0.32
0.40
0.20
!3kV Selection Switch
Momentarily depressing this switch will change the tube potential to 60 or 70 kV. Since the tube
potential is constant DC, a 60 kV setting the PHOT-X II is similar to a 70 kVp setting on a
conventional x-ray. If either the Film Speed Switch!1 or Digital Imaging Switch!2 is
depressed, 60kV is automatically selected.
!4 mA Selection Switch
Momentarily depressing this switch will change the tube current setting (4 or 7 mA). If the Digital
Imaging Switch !2 is depressed, 4 mA is automatically selected and if the Film Speed Switch !1
is depressed, 7 mA is automatically selected,
!5Patient Size Selection Switch
This switch alters the selection of patient type/size to be radiographed (child→adult→large→child)
and sets the exposure time automatically.
NOTE : Setting or adjusting the exposure time manually (with or switch) supersedes
tt
!5!5
t ~
!5 functions.
tt
!5!5
!6 Exposure Time Display Window
This window displays the selected exposure time. If an abnormal condition exists or a malfunction
occurs, an Error Code is displayed. (See Section : [4] ERROR CODES)
!7Exposure W arning Light
Illumination of this light indicates the unit is producing x-radiation.
!8Exposure Switch
This switch initiates radiographic exposure. When making an exposure, depress and hold this
switch until the Exposure W arning Light!7 and the audible warning shut off. Failure to keep this
switch depressed will result in the premature termination of the exposure and an error code E.00 will
be displayed in Exposure Time Display Window!6.
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Page 7
[ 4 ] OPERATING PROCEDURES
1. Turn ON the Main Power Switch q.
2. Confirm that Ready Light w is illuminated.
NOTE : The ready light will not illuminate unless the incoming line voltage is
correct and within the x-ray’s operable range (108 ~ 132VAC).
3. Select the appropriate tooth type (t ~ o), and confirm the pre-selected conditions (cone type, film
or digital, kV, mA and patient size) are suitable for exposure.
NOTE : To manually set the exposure time, depress eigher of the manual Exposure Time
Adjusting Switches ( or ) until the desired exposure time appears in the Exposure
Time Display Window
tt
(
To return to the automatic exposure time selection mode, depress any one of Tooth
Selection Switches (
4. Depress the Exposure Switch !8. When the Exposure Switch is depressed, the Exposure Warning
Light !7 illuminates and the audible warning sounds. Do not release the Exposure Switch until the
Exposure Warning Light and audible warning automatically shut off. Failure to keep the switch
depressed will result in exposure being terminated prematurely.
!5!5
t ~
!5) do not affect exposure time. (All of the tooth selection lights are off.)
tt
!5!5
!6!6
!6. While the unit is in manual mode, other selection switches
!6!6
tt
oo
t ~
o).
tt
oo
5. To continue to radiograph other teeth, just select appropriate Tooth Selection Switches (t ~ o).
IMPORTANT : To protect x-ray tubehead from heat accumulation, wait for a time interval
that is equal to 50 times the selected exposure time before making additional exposur es.
(Example : a 25 sec. wait is necessary between exposures that are 0.5 sec. in duration.)
6. Turn OFF the Main Power Switch q in order to prevent accidental exposures when the unit is not in
use.
NOTE : If the unit left over 8 min. without being operated and the Main Power Switch q is
kept on, figure “ 1” runs through the Exposure Time Display Window !6. This does
not mean that malfunction of the unit has occurred ; this is an energy saving feature.
The unit returns to ready condition by pressing any one of the switches, except the
Exposure Switch !8.
[ 5 ] OPTIONAL HAND EXPOSURE SWITCH
An optional hand exposure switch can be connected to the sub controller. Since this exposure switch
has a coiled cord, operators can stand in the most suitable position for operation.
As controller has separate connector for this exposure switch, both exposure switch !8 on the front
panel of sub controller and this hand exposure switch can be used.
If local code prohibits use of both, ask installer to disconnect the connector of either switch.
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Page 8
[ 6 ] DIGITAL IMAGING SYSTEM
If electrical instruments such as a digital imaging system is used with PHOT-X II MODEL 303
x-ray, the following points should be confirmed to keep electrical safety.
CAUTION :
The use of ACCESSORY equipment not complying with the equivalent safety requirements
of PHOT-X II MODEL 303 may lead to a reduced level of safety of the resulting system.
Consideration relating to the choice shall include :
use of the accessory in the PATIENT VICINITY
evidence that the safety certification of the ACCESSORY has been performed in accordance
to the appropriate IEC60601-1 and/or IEC60601-1 harmonized national standard.
[ 7 ] CLEANING AND DISINFECTION
In order to ensure proper hygiene and cleaning of the equipment, the following procedures
must be followed :
WARNING
Before cleaning the unit, turn off the main power switch and breaker on the branch line.
This is required because some internal parts remain connected to main voltage even when
the main power switch has been turned off.
Wipe the outside surface with a paper towel dampened with a disinfectant solution or household,
non abrasive cleaner. DO NOT SPRAY SOLVENT OR LIQUID DIRECTLY ON THE X-RAY
UNIT. BE CAREFUL NOT TO ALLOW SOLVENTS TO RUN OR DRIP into the PHOT-X II.
This could cause damage to the PHOT-X II. Allow surfaces to air dry before tuning breaker and
main switch back on.
Parts in contact with skin :
To ensure proper cleaning of these parts, periodic disinfection with a non corrosive surface
disinfectant is recommended.
[ 8 ] DISPOSAL OF USED FILM AND CCD COVERS
Dispose of used film covers and CCD sensor covers appropriately, according to the procedures
indicated by each manufacturer and by local codes.
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Page 9
[ 9 ] ERROR CODES
If an abnormal condition exists in the unit, or a malfunction occurs, an error code is displayed in
the Exposure Time Display Window !6. Please refer to the Table below.
Error
Code
E.00
E.01
E.02
E.03
E.05
Condition
Exposure switch was released before
exposure termination.
Exposure switch was depressed within
10 sec. of previous exposure.
Exposure time was set and exposure switch
was depressed within 3 sec. of the power
switch being turned on.
Line voltage was less than 90% of rated
voltage.
Line voltage was more than 110% of rated
voltage.
Tube current at last portion of exposure was
less than 3 mA at 4 mA setting or less than
5.25 mA at 7 mA setting
Step to be Taken
All the tooth selection
lights blink.
Depress one of the
tooth switches.
A 10 sec. delay is
built in between each
exposure.
Release the exposure
switch.
Possible Solution
Release the exposure
switch after the
exposure lamp turns
off.
There should be a
"wait" interval of 50
times the exposure time
between successive
exposure.
Wait a minimum 3 sec.
after the main power
switch is turned on
before pressing the
exposure switch.
Confirm that ready lamp
is on before exposure.
Ask service personnel to
check the line voltage.
E.06
E.07
E.08
E.09
E.10
E.11
E.12
E.14
Tube current at last portion of exposure was
more than 5 mA at 4 mA setting or more
than 8.75 mA at 7 mA setting
During the exposure, tube current becomes
less than 2 mA at 4mA setting or less than
3.5 mA at 7 mA setting.
During the exposure, tube current becomes
more than 6 mA at 4mA setting or less than
10.5 mA at 7 mA setting.
Setting for pre-heating time is out of range.
Exposure switch or exposure circuit had been
ON, when main power switch is turned on.
Tube current is detected during pre-heating
period.
Tube current is detected when main power
switch is turned on.
Tube potential at last portion of exposure was
less than 50 kV at 60 kV setting or less than
60 kV at 70 kV setting.
Turn off the main power
switch and wait for
approximately 2 min.
Turn on the main power
switch again.
If same error code is
displayed, call service
personnel.
-8-
Page 10
Error
Code
E.15
E.16
E.17
E.18
E.19
E.20
E.22
E.23
Condition
Tube Potential at last portion of exposure
was more than 70 kV at 60 kV setting.
During the exposure, tube potential becomes
less than 40 kV at 60 kV setting or less than
50 kV at 70 kV setting.
During the exposure, tube potential becomes
more than 80 kV.
Excess current was detected in primary circuit
of filament transformer.
Excess current was detected in primary circuit
of high voltage transformer.
Exposure switch was depressed when tube
head temperature was over 60˚C.
Failure of electrical communication between
the power PCB and timer PCB.
Some switch had been on, when the main power
switch is turned on. (Except the exposure switch.)
Step to be Taken
Turn off the main power
switch and wait for
approximately 2 min.
Turn on the main power
switch again.
Release the exposure
switch,
Turn off the main power
switch and turn on again.
Possible Solution
If same error code is
displayed, call service
personnel.
[ 10 ] MAINTENANCE
PHOT-X II MODEL 303 x-ray unit requires post installation confirmation and periodic
maintenance checks to be performed by dealer service personnel. These procedures ensure that the
x-ray unit is functioning within the manufacture’s specifications and remains in compliance with
the Standard.
It is responsibility of the owner of the unit to see that these maintenance checks are done onceevery 6 months and that they are performed by a trained, certified service technician.
The specific instructions to perform these checks are located within the PHOT-X II MODEL 303
Installation Manual.
A. Line voltage confirmation
B. Tube potential and Tube current confirmation
C. Inspection of arm and head movement
D. Mechanical safety
1. The wall plate should be checked to confirm that it is securely attached to the wall.
2. The arm mounting bracket should be checked to confirm that it is securely attached to the
wall mounting plate. The arm mounting bracket must be level horizontally and vertically.
3. Check and verify that the horizontal arm is not raising up and out of the arm mounting bracket.
This should be verified routinely by treatment room personnel.
a. Focal spot------------------------------------------------ 0.7 mm
b. Target Material------------------------------------------Tungsten
c. Target angle --------------------------------------------- 16˚
d. Maximum anode heat content ------------------------7kJ (10kHU)
2. Maximum x-ray tube assembly heat content ----------120kJ (170kHU)
4. Rated tube current -----------------------------------------4 mA / 7 mA selectable
5. Maximum rated peak tube potential --------------------70 kV
6. Rated line voltage -----------------------------------------120 VAC, 60Hz, Single phase, 1.3 kVA
7. Line voltage range ---------------------------------------- 108 VAC ~ 132 VAC
8. Range of line voltage regulation ------------------------ 2 ~ 5 %
9. Rated line current ----------------------------------------- 10.8 A at 70 kV, 7 mA
10. Maximum line current ----------------------------------- 12 A at 70 kV, 7 mA
11. Exposure time ---------------------------------------------0.01 ~ 3.2 sec.
12. Inherent filtration ----------------------------------------- 1.7 mm Al Equivalent
13. Added filtration ------------------------------------------- 0.3 mm Al
14. Minimum filtration permanently in useful beam----- 2.0 mm Al Equivalent at 70 kV
15. Nominal roentgen output 60 kV 70 kV
4 mA 7 mA 4 mA 7mA
a. Distal end of regular cone ----------------------------- 5.4 9.4 7.1 12.4 mGy/sec. ± 40%
b. Distal end of long cone -------------------------------- 2.4 4.2 3.1 5.5 mGy/sec. ± 40%
(Data obtained by direct measurement in the useful beam)
16. Nominal electrical output of H.V. generator ---------- 0.49 kW at 70 kV, 7 mA
17. Cone Source to skin distance Field size
a. Regular cone -------------------------------------------- 8 inches (203 mm) 58 mm dia., circular
b. Long cone (option) -------------------------------------12 inches (305 mm) 58 mm dia., circular
c. Rectangular cone (option) ----------------------------- 8 inches (203 mm) 36 x 47 mm, rectangular
18. Maximum symmetrical radiation field---------------- 60 mm dia. at distal end of cone
19. Leaking technique factor ------------------------------- 70 kV / 0.14 mA
(0.14 mA is maximum rated continuous
current for 7 mA with a duty cycle 1 : 50)
20. Duty cycle ------------------------------------------------1 : 50 (0.5 sec. exposure with 25 sec. interval)
21. Maximum deviation of tube potential, tube current and exposure time
a. Below 0.1 sec. setting---------------------------------- ±10 kV, ±2 mA, ±5 msec.
b. 0.1 sec. setting & up ----------------------------------- ±5 kV, ±1 mA, ±10 msec.
22. Measurement base of technique factors
a. peak tube potential ------------------------------------- Average of peak tube potentials during
one exposure
b. tube current----------------------------------------------Average of tube current during one exposure
c. exposure time ------------------------------------------- Time period during x-ray is emitted
23. Half value layer ------------------------------------------1.5 mm Al over
24. Source to the base of cone distance ------------------- 94 mm