Belmont Clair Operating instructions

Troubleshooting
In the case of a trouble, please see troubleshooting below, so it may help you to solve the problem or to find
the solutions. The troubleshooting described speculates on various problems. If the problems or symptoms
are not listed here, please contact Takara Belmont.
CAUTION:
Please make sure disconnect power supply line before repair or replace defective parts. If not, it may cause
injury from electrical shock. Special care must be taken when repairing the chair motor, capacitor, solenoid
valve and power supply cable which parts are operated with high voltage.
High voltage parts
* Unit in j-box : power cable, power switch, fuse, air switch, terminal block, transformer, Noise filter,
900LED Power supply PCB.
* Chair : Motor, capacitor, solenoid valve, power cable, chair PCB (input voltage).
In the case of the repair of the chair hydraulic circuit. Make sure that the hydraulic circuit is not pressurized
before removing the hydraulic parts such as motor, solenoid valve and cylinder.
Remove the chair to lowest end and fully reclined position for unpressurized chair position by “LIMIT
MODE”.
Table of Contents
Book No. 1E05K1A0
List of Clair Chair PCB Setup Procedures
Clair Chair Troubleshooting

Clair Chair Troubleshooting
Defective Part Symptom Check Point Possible Cause Solution
Error sounds continuously as " Do ... Do... Do... " > Defective or damaged of
seat potentiometer or harness
Re-tighten set screw of seat potentiometer or replace seat
potentiometer assembly
Error sounds continuously as " DoRe ... DoRe... DoRe... " > Defective or
damaged of backrest potentiometer or harness
Re-tighten set screw of backrest potentiometer or replace
backrest potentiometer assembly
Error sounds continuously as " DoReMi ... DoReMi... DoReMi... " >
Defective or damaged of legrest potentiometer or harness
Re-tighten set screw of legrest potentiometer or replace
legrest potentiometer assembly
Error sounds continuously as " DoReMiFa ... DoReMiFa... DoReMiFa... " >
Defective or damaged of rollup potentiometer or harness
Re-tighten set screw of rollup potentiometer or replace rollup
potentiometer assembly
Error sounds as " PiPiPiPi " for five times > Chair foot switch was on when
turning the power on
Check foot switch whether there is no object on foot
controller of replace foot controller
Error sounds continuously as " DoReMiFaSolLaTi " > Failure occurred in
EEPROM memory of chair pcb
Replace chair pcb
There is a buzzer sounds after
auto movement
Check type of buzzer sounds Error sound as "PiPu" for time out (60 seconds) error sound
Chair can not move until target position after pressing preset
switch. Check chair movement (Especially legrest in
movement occur due to damage of legrest spring) and replace
the spring.
*Set legrest in limit position a little forward position from
vertical position*
LP switch does not work Check type of error sounds
Error sounds as " Pi---- " for two seconds > Chair in LP position after turning
the power on
Which is not a malfunction. Press other chair operation
switch and press LP switch again.
Chair does not move at all Check wiring of inside chair Disconnected wirings Connect wiring.
Defective capacitor Replacement of capacitor
There is no power supply (Current voltage) to motor pump. Check connection of motor wires (3P) > Repair
There is power supply (Current voltage) to motor pump but motor pump does
not work.
Replace motor pump
Chair
There is an error sounds when
turn on the main switch
Check type of error sounds
Backrest reclines and seat
lowers but no raising and lifting
Check motor pump of the chair
2/5

Clair Chair Troubleshooting
Defective Part Symptom Check Point Possible Cause Solution
There is foreign object under the legrest Remove foreign object
Defect safety switch (micro switch) or damage harness Replace micro switch or harness
Defective limit setting Resetting each limit positions
Damage harness between the potentiometer and chair pcb or damage
potentiometer.
Repair harness or replace potentiometer.
There is a continuous buzzer
sounds during limit setting
Check potentiometer Potentiometer fixing position is close to the out of range position.
Re-attach the potentiometer (without continuous buzzer
sound area)
Check potentiometer Loose set screw of potentiometer
Re-tighten set screw of potentiometer to correct position. /
Re-setting of each limit position (refer to chair tech info.)
Chair stops before setting position Stop width of the address data is wider. Set stop width to less side.
Chair stops over the setting position Stop width of the address data is less. Set stop width to wider side.
Legrest does not come out
everything after pressing P1 or
P2 switch
Check backrest angle at P1 or P2 position
Legrest angle (and rollup extension) is automatically controlled by backrest
angle at preset position. Can not adjust legrest angle manually. For detail of
this movement, see operating instruction.
Adjust backrest angle (more reclining position) and
memorized to P1 or P2 position.
Rollup does not come out after
pressing P1 or P2 switch even
backrest is full reclined position
(Power Headrest)
Check power headrest position (Extension position)
There are 2 settings for interlock or not interlock between headrest position
(Extension position) and rollup position. This setting can be changed to
interlocking after initial setting.
(Factory setting is not interlocking)
Switch interlock or not interlock function between pillow
position and rollup position refer to [List of Clair Chair PCB.
Setup Procedures]
Motor pump is keep running Check relay pcb Contact point of relay pcb is welding Replace relay pcb
Chair
Each limit does not work
Check each limit
Stop position differs at preset
movement
Chair does not move (does not
lower)
Safety function is on
3/5

Clair Chair Troubleshooting
Defective Part Symptom Check Point Possible Cause Solution
Chair movement stops when low pressure hose of
cylinder is pinched (clamp) with tools such as long
nose pliers.
Defective O-ring of inside cylinder (There are two O-rings inside of cylinder
body. It may damage the O-ring for bottom side)
Replace O-ring or cylinder assy.
Chair movement stops when low pressure hose
between solenoid and oil reservoir (return hose) is
pinched (clamp) with tools such as long nose pliers.
Foreign object stays around plunger of solenoid valve Disassembly and cleaning or solenoid valve or replace it
Chair movement does not stops when low pressure
hose between solenoid and oil reservoir (return hose) is
pinched (clamp) with tools such as long nose pliers.
Defective check valve inlet side of solenoid valve and oil flows in an
opposite direction
Replace solenoid valve assy
Loose nipple Tighten the nipple
Defective sealant of nipple Fix it with seal tape and re-tighten nipple
Defective or damage the O-ring of hi-pressure hose Replace O-ring (P3)
Damage oil reservoir or reduce sealant of bottom lid Replace oil reservoir
Loose hose clamp of oil reservoir hose Tighten hose clamp
Chair moves too fast or slow
(seat lowering speed)
Check needle on the solenoid valve According to a request from a user
Adjust speed by needle valve (Be careful not to open the
needle valve too much, it will come off)
Power Headrest moves at
moment
Power headrest moves during chair up motion Air goes into plunger guide tube of headrest up solenoid valve
Release air from solenoid valve.
Remove the solenoid block with bracket from chair base. Coil
part of solenoid is place the downward and operate chair
backrest about 10 times.
There is noise from motor Check hose layout around motor Making noise due to the vibrations of motor Rearrangement of hoses around motor
Chair
Oil leakage from nipple of cylinder or solenoid valve
Oil leakage from oil reservoir
Chair moving (down or
reclining) by itself
Oil leakage
4/5

1)Overall default setting (Figures in the right column show values to
be set.) (Note 4)
□ＭＯＤＥ ⇒ Ｂｅｅｐ ⇒ Ｂｅｅｐ (Do not execute this operation.) PCB simple test mod (Only for version 1.2 and up)
Chair up
2) Setting for upper limit position
Chair down
2) Setting for lower limit position
Backrest up tilt
2) Setting for up-tilt limit position
Backrest lay flat
2) Setting for lay-flat limit position
Ｐ１ 2) Setting for leg rest OUT-limit position
Ｐ０ 2) Setting for leg rest IN-limit position
Ｐ２ 2) Setting for rollup OUT-limit position
ＬＰ 2) Setting for rollup IN-limit position
Pillow up
2) Setting for head rest upper limit position
Pillow down
2) Setting for head rest lowerlimit position
Ｐ０ □ＳＴＯＲＥ 7) Decrease the stop width for up operation.
Ｐ１ □ＳＴＯＲＥ 7) Increase the stop width for up operation.
Ｐ０ □ＳＴＯＲＥ 7) Decrease the stop width for down operation.
Ｐ１ □ＳＴＯＲＥ 7) Increase the stop width for down operation.
Ｐ０ □ＳＴＯＲＥ 7) Decrease the stop width for up-tilt operation.
Ｐ１ □ＳＴＯＲＥ 7) Increase the stop width for up-tilt operation.
Ｐ０ □ＳＴＯＲＥ 7) Decrease the stop width for lay-flat operation.
Ｐ１ □ＳＴＯＲＥ 7) Increase the stop width for lay-flat operation.
Ｐ１ ⇒ Ｂｅｅｐ 8) Automatic acquisition of stop width
Ｐ２ 9) LP SW works for P3 function.
ＬＰ 9) LW SW works for LP function.
Ｐ０ 10) Set communication speed to low. (2400 bps)
Ｐ１ 10) Set communication speed to high. (4800 bps)
Ｐ２
10) Set communication speed as that of NEBB Specification
(9600bps, etc.).
Backrest up-tilt
12) Prohibit backrest up-tilt either, when down operation is prohibited.
Backrest lay-flat
12) Prohibit backrest lay-flat either, when down operation is
prohibited.
ＬＰ 13) Switch leg rest interlocking when in LP operation. Interlock
Pillow up
14) Switch interlock function between pillow position and rollup
position
Interlock
Pillow down
15) Swich function to vary pillow position and gargle position. Yes
Pillow forward
Switch variable/fixed leg rest angle (version 1.3 and up). Possible
Chair up
11) Interlocking with dental light.
Chair down
11) Non-interlocking with dental light.
□ＭＯＤＥ Aboert the mode (Return to (1)).
3) Setting for P1 position
3) Setting for P2 position
3) Setting for gargle position
3) Setting for return position
Ｐ０ 4) Doctor No. 0 is set.
Ｐ１ 4) Doctor No. 1 is set.
Ｐ２ 4) Doctor No. 2 is set.
ＬＰ 4) Doctor No. 3 is set.
□ＳＴＯＲＥ Return to normal status (2).
Ｐ０ □ＳＴＯＲＥ 5) Disable buzzer sound.
Chair up
□ＳＴＯＲＥ 5) Change sound for operation SW. ○
Chair down
□ＳＴＯＲＥ 5) Change sound for 4-bit input. －
Backrest up-tilt
□ＳＴＯＲＥ 5) Change sound for serial input. －
Backrest lay-flat
□ＳＴＯＲＥ 5) Change sound for down operation prohibition input. ○
Ｐ１ □ＳＴＯＲＥ 5) Change sound for all operation prohibition input. －
Ｐ０ Leg rest IN operation
Ｐ１ Leg rest OUT operation
Chair up
Chair up operaiton
□ＭＯＤＥ Return to the normal status (2).
JP1 terminal
Short-circuit across 1-2.
Short-circuit across 2-3.
List of Clair Chair PCB. Setup Procedures
1. The work should be performed in order from Step 1 with the slide SW set to the position stated. The "□" symbol shows the SW on the PCB.
2. Statement such as Ｐ１⇒ＢｅｅP means that the switch P1 is pressed and held until the buzzer sounds.
3. When the slide SW is set to the LIM position (inner side), be sure to restore it to the NOL position after the work is completed.
Slide SW
Position
Switch to be pressed
for the first time
Switch to be pressed
for the second time
Switch to be pressed
for the third time
Switch to be pressed
for the fourth time
Items to be Set
Overall
Default
LIM Position
(Red LED
illuminates.)
□ＭＯＤＥ ⇒ Ｂｅｅｐ
Move the chair up to
the position to be
set with the manual SW.
□ＳＴＯＲＥ
□ＭＯＤＥ
①
Chair up
０２
Chair down
０３
Backrest up-tilt
０２
Backrest lay-flat
０２
ＬＰ
□ＭＯＤＥ ⇒
Ｂｅｅ
ｐ
High
Up-tilt prohibited
Interlock
NOL Position
(2)
Ｐ１ ⇒ Ｂｅｅｐ
Ｐ２ ⇒ Ｂｅｅｐ
ＬＰ ⇒ Ｂｅｅｐ
Ｐ０ ⇒ Ｂｅｅｐ
□ＭＯＤＥ ⇒
Ｂｅｅｐ
０
□ＭＯＤＥ
□ＭＯＤＥ
LP operation is only for backrest operation.
LP operation is for backrest + up/down operations.
(Note 1) To change the sound and when multiple settings are to be changed, execute the third step as required, and press STORE once to complete the procedure.
(Note 2) For setting stop width, press STORE once for each stop width. For setting multiple points, repeat the steps from the second step.
(Note 3) There is no way to exit from the sound switching mode. Pressing only [STORE] without pressing any other SW will reset the present setting.
(Note 4) By issuing the sound "Do" for "headrest (Yes)" or "one-octave higher La" for "Rollup (Yes)", you can judge the equipment status (version 1.5 or up).