Mitsubishi Electric JT-SB216JSH2-W-NE, JT-SB216JSH2-H-NE, JT-SB216JSH2-S-NE, JT-SB216KSN2-W-NE User Manual
HAND DRYER
HANDBOOK
MODELS
JT-SB216JSH2-W-NE
JT-SB216JSH2-H-NE
JT-SB216JSH2-S-NE
November 2015 No. U208
JT-SB216KSN2-W-NE
Nameplate
Warning:
Repair work must be performed by the manufacturer, its service
agent or a similarly qualified person in order to avoid hazards.
Contents
1. Safety precautions
2. Features
3. Names and functions of components
4. Specifications
5. Outside dimensions
6. Electrical wiring diagrams
7. Circuit board diagrams
8. Principles of operation
9. Troubleshooting
10. How to call
11. Service inspection list
12. Overhauling procedures
13. Parts catalog
JT-SB216JSH2-W-NE
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3-4
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8-10
12-15
17-24
25-57
26-33
4
5
6
6
7
11
16
16
JT-SB216JSH2-H-NE
JT-SB216JSH2-S-NE
JT-SB216KSN2-W-NE
.....................................................
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34-41
42-49
50-57
1. Safety precautions
Read the following precautions thoroughly before the maintenance, and then inspect and repair the product in a
safe manner.
The types and levels of danger that may arise if the product is handled incorrectly are described with the warning
symbols shown below.
Incorrect handling of the product may
Warning
result in serious injury or death.
Electric shock
If you must inspect the circuitry while the power is
on, do not touch the live parts.
(Failure to heed this warning may result
in electric shock.)
Caution against
electric shock
Modification is prohibited
Do not modify the unit.
(Failure to heed this warning may result
in electric shock, fire and/or injury.)
Prohibited
Proper electric work
• Use the electric wires designated for electric work,
and conduct electric work in accordance with the
"Electric Installation Engineering Standard", the
"Indoor Wiring Regulations" and the installation
instructions.
• Make sure that the terminals and fixed wiring are
securely connected.
(Improper connection or wiring installation
may result in electric shock and/or fire.)
Be sure to follow
this instruction.
Scratches and deterioration
Make sure to replace scratched and/or deteriorated
wiring and lead wires.
Turn off the power
Make sure to turn off the earth leakage breaker
prior to starting repair work. (The charge voltage in
the circuitry remains for another 40 seconds or so,
even after the power is turned off and the lamp is
unlit; therefore, wait for at least 40 seconds before
disassembling the product.)
(Failure to heed this warning may result
in electric shock.)
Be sure to follow
this instruction.
Use proper parts and tools
For repair, be sure to use the parts listed in the parts
catalog of the applicable model and use the proper
tools.
(Failure to heed this warning may result in
electric shock, fire and/or injury.)
Be sure to follow
this instruction.
Check insulation
Upon completing repair work, always measure the
insulation resistance. Verify that it is at least 10 MΩ
(with a 500-V DC insulation resistance tester), and
then turn on the power.
(Inadequate insulation may result in
electric shock.)
Be sure to follow
this instruction.
(Failure to heed this warning may result
in electric shock and/or fire.)
Be sure to follow
this instruction.
Incorrect handling of the product may result in injury or
Caution
damage to properties including buildings and equipment.
Wear gloves
Always wear a pair of gloves during inspection or
repair work.
(Failure to heed this caution may result in
injury.)
Be sure to follow
this instruction.
─ 3 ─
Request for repair
●
Before repairs, take the product off the wall.
●
Inspect the earth condition, and repair it if it is incomplete. Make sure that an earth leakage breaker or an over-
load protection device is installed, if it is not installed, recommend the dealer to install one.
●
Check whether the air filter, side cover, and the drain tank are installed securely in place.
●
Do not leave a towel or other object in the hand-drying area.
●
Never place any object on the main body nor cover it.
●
Make sure that the product is not being used in any of the following locations:
• Outdoors
• Locations where the temperature could be lower than 0ºC
• Locations where the temperature could be higher than 40ºC
• Locations where there is a lot of dust
• Locations where there is a lot of condensation
• Locations where salt damage could occur
• Vehicles (including ships and airplanes)
• Locations where corrosive, neutral, or reductive gases are present
• Near food or tableware
• Kitchens
•
Locations where the product may come into direct contact with water (Where there is a risk of water splashing)
• Locations where the product is in direct sunlight or strong light (It may cause sensor malfunction)
• Rooms that have a sterilization basin, swimming pools, or bathrooms
Make sure that the product operates properly upon completion of repair. Clean the product and the surrounding
area, and then notify the customer of the completion of repair.
2. Features
• The silent wave nozzle has reduced operating sound by 2 dB.
• The newly added "High air speed" (for the heater-less type: JT-SB216KSN2-W-NE) has improved the drying
performance.
• Power control section has been removed to prevent misuses.
• Cleanable drain ditch
• Exteriors can be cleaned by wiping with alcohol.
• The square design matches various lavatories.
─ 4 ─
3. Names and functions of components
*Shaded areas in the figure indicate antibacterial material.
Hand drying area
Blow panel f assy
(Panel (front))
Black wall area
Main unit
Sensor
The blue indicator does not have a sterilizing
effect.
Do not look directly into the blue indicator.
Side panel R (right side, not in view)
Front panel
Side panel L
Side cover
Tank cover
Drain tank
Blow panel bm assy
(Panel (back))
Blue indicator
Display
Heater type
(JT-SB216JSH2-W/H/S-NE)
HEATER
ON HIGH AIR SPEED
OFF STANDARD
AIR SPEED
Settings
HEATER
AIR SPEED
OFF / ON
STANDARD / HIGH
Heater type
(JT-SB216JSH2-W/H/S-NE)
Power lamp
Heater lamp
Heater-less type
(JT-SB216KSN2-W-NE)
HIGH
STANDARD
Settings
AIR SPEED
STANDARD / HIGH
$LU¿OWHU
Heater-less type
(JT-SB216KSN2-W-NE)
Power lamp
Check lamp
Note: JT-SB216KSN2-W-NE is not equipped with the HEATER switch.
─ 5 ─
4. Specifications
Model
Rated
voltage
(V)
Rated
frequency
(Hz)
Heater
Motor
speed
Rated
current
(A)
Power con-
sumption
(W)
Air
speed
(m/s)
Noise
(dB)
Weight
(kg)
Drain tank
capacity
(ℓ)
High 5.7-6.2 1240 106 59
JT-SB216JSH2-W-NE
ON
Standard
4.9-5.3 1070 98 56
JT-SB216JSH2-H-NE
JT-SB216JSH2-S-NE
220-240
Single phase
50-60
OFF
High 3.9-4.2 720 106 59
Standard
3.0-3.2 550 98 56
11 0.8
High 3.9-4.2 720 106 59
JT-SB216KSN2-W-NE ―
Standard
3.0-3.2 550 98 56
• Air speed is calculated from the static pressure measured by the pitot tube (at the nozzle).
• Noise is the A range value measured in an anechoic room.
(Average of the three points: 2 m from the front and both sides of the unit.)
• The heater is turned off automatically when ambient temperature reaches 32°C or more. (Applicable models: JTSB216JSH2-W/H/S-NE)
5. Outside dimensions
JT-SB216JSH2-W-NE, JT-SB216JSH2-H-NE, JT-SB216JSH2-S-NE, JT-SB216KSN2-W-NE
Terminal block
Power cable hole
(rear)
Terminal block
393
168
10
267
80
263
Installation panel
(Fix plate)
670
658
77
219
93
Installation panel
(Fix plate)
2
Detailed view of installation holes
Installation holes
Drain tank
Air ¿ lter (air intake)
68
（79.5）
300*
189
（103.5）
* Maximum width of main unit
Unit: mm
─ 6 ─
6. Electrical wiring diagrams
JT-SB216JSH2-W-NE, JT-SB216JSH2-H-NE, JT-SB216JSH2-S-NE
JT-SB216KSN2-W-NE
─ 7 ─
7. Circuit board diagrams
Circuit board diagrams and check points
1 Power circuit board (JT-30P8H)
<JT-SB216JSH2-W/H/S-NE>
Heater power supply (With heater ON): 220 V AC, 230 V AC, 240 V AC
(Between TAB3 and TAB4)
Bus voltage (Being stopped): 310 V DC, 324 V DC, 338 V DC
(Between TAB5 and 0 V or between TAB6 and 0 V)
15 V
(CN2 1P)
Power supply voltage: 220 V AC, 230 V AC, 240 V AC
(Between TAB1 and TAB2)
5 V
(CN2 2P)
0 V
(CN2 3P)
Carrier frequency 15 kHz
(IC1 8P)
Reset input 5 V
(IC1 18P)
Clock frequency 12 MHz
(IC1 19P)
─ 8 ─
2 Filter circuit board (JT-30F8)
Power supply voltage: 220 V AC, 230 V AC, 240 V AC
(Between TAB20 and TAB21, and between TAB22 and TAB23)
3 Control circuit board
(JT-30M8A [JT-SB216JSH2-W-NE] /JT-30M8 [JT-SB216JSH2-H/S-NE] /JT-30M9A [JT-SB216KSN2-W-NE])
Circuit thermostat characteristics
(IC20 5P)
Temperature Resistance IC20 5P Voltage
20°C 59.3 kΩ 3.44 V
30°C 37.6 kΩ 2.91 V
40°C 24.5 kΩ 2.38 V
Clock frequency 8 MHz
(IC20 14P)
Reset input 5 V
(IC20 11P)
5 V
(CN18 1P)
─ 9 ─
15 V
(CN8 2P)
0 V
(CN8 7P)
4 Light receiving circuit board (JT-30S1R) (Upper sensor)
5 Sensor circuit board (JT-30S2R) (Middle sensor)
6 Sensor circuit board (JT-30S3R) (Lower sensor)
7 Display circuit board (JT-30S5R)
─ 10 ─
8. Principles of operation
Descriptions of circuit operation
(1)
Notes for turning the power “ON / OFF”
1 When the power is turned “ON”, the power lamp (LED1), the heater lamp (LED2) (JT-SB216JSH2-W/H/S-
NE only, with the heater switch ON), and blue indicators (LED10, 11) turn on after 1.5 seconds
hand dryer becomes ready for operation.
• Before the power lamp turns on, the hand dryer will not operate even if hands are inserted in the hand drying area. In the meantime, the microcomputer (IC20) of the main unit performs the initial settings, including the setting of the hand detection sensor sensitivity.
• In order to set the sensitivity of the hand detection sensor correctly, do not insert hands in the hand drying
area until the power lamp is turned on.
• Even if the hand dryer has started immediately (within 15 seconds or less) after turning the power “ON”, it
is normal though the motor input may become slightly lower because of the initial setting.
*1: If the power is turned ON again 30 to 120 seconds after turning the power OFF, it may take 3 seconds
before the operation is enabled.
2 When the power is turned “OFF”, the power lamp and blue indicators turn off and operation stops.
• The circuitry takes about 40 seconds to discharge the voltage retained in it. Wait until the discharging time
elapses before plugging in or out the connectors, replacing the circuit boards, or doing other maintenance.
• Even when any error is occurred, the error display will go off if the power has been turned off. Only when a
microcomputer error is occurred, the error display persists till the voltage retained in the circuitry has been
discharged (till the microcomputer has been reset).
(*1)
, and the
(2)
Hand detection and operation
1 The hand detection sensors are infrared sensors containing the light emitting sensor (infrared LED) and
light receiving sensor (photo-diode), etc. and consist of the upper sensor, the middle sensors, and the lower
sensor.
2 Reflection type upper sensor:
This sensor detects the change in the reflected amount of infrared light when hands are inserted.
Transmission type middle and lower sensors:
These sensors detect that the infrared light is shielded when hands are inserted.
3 When the lower or middle sensors detect hands, the blower motor turns on and the hand dryer starts to
operate.
4 Once operation has started, it continues as long as any of the upper, middle, or lower sensors detects
hands.
5 If 1.5 to 3 seconds elapse without detecting hands by any of the sensors, the blower motor turns off and
operation stops.
6 The hand dryer continuously operates for up to 30 seconds.
• Once 30 seconds have elapsed, the hand dryer stops operating even if hands are detected.
• Since this is a function to assume the presence of a foreign object, the operation will resume if hands are
pulled out and reinserted.
(3)
Control of the heater (Applicable models: JT-SB216JSH2-W/H/S-NE)
1 The heater turns ON simultaneously with the blower motor turns ON. (The heater lamp turns on.)
2 The heater does not turn ON in the following occasions:
• When the heater switch is turned “OFF”
• When a temperature detected by the circuit thermostat on the control circuit board (JT-30M8A/JT-30M8)
is 32°C or higher
─ 11 ─
9. Troubleshooting
Work precautions
• When servicing, be sure to recreate the malfunction two or three times before starting repairs.
• When servicing, always take care to keep proper footing.
• Before starting the service, always unplug the power cord from the outlet, or turn off the earth leakage
breaker when no power cord plug is provided. Sufficient care must be taken to avoid electric shock or injury.
• Make sure to connect the power supply wires correctly.
• When removing the circuit board, always hold it at both ends and remove carefully so as not to apply force
to the surface mounted parts.
• When removing the circuit board, be careful of the metal edges on the board.
• When removing or inserting the connectors for the circuit board, hold the entire housing section. Never pull
on the lead wires.
• When circuit board failure is considered to be a cause, check closely for any broken section on the copper
foil patterns, burning or discoloration of parts.
• After replacing a circuit board, make sure to restore the same settings as before the replacement.
(1) Table of the safety devices
Purpose Device
Overcurrent protection Current fuse
Protection against an excessive temperature rise of the heater parts
Protection against an excessive temperature rise of the blower parts
Motor lock protection • Current detection circuit
Thermal fuse
Thermal fuse
( Detects abnormal current caused by the motor lock, and stops
the power to the motor.)
• Current fuse
─ 12 ─
(2) Troubleshooting
Description of the error mode display
<JT-SB216JSH2-W/H/S-NE> <JT-SB216KSN2-W-NE>
Power lamp
Heater lamp
: ON : Slow blinking (ON for 0.4 seconds/ OFF for 0.4 seconds)
: OFF : Fast blinking (ON for 0.1 second/ OFF for 0.1 second)
Troubles with error display
Error Mode Display Checkpoint Check Method and Remedy
Power
(Lamps do not light.)
Heater/Check
Power supply
voltage
Power supply
voltage on the
power circuit
board (JT-30P8H)
●If 220 to 240 V AC is not supplied, check the following points.
Power supply
voltage on the
filter circuit board
(JT-30F8)
Power lamp
Check lamp
Check that approx. 220 to 240 V AC is supplied at both ends of the
power cord connections on the terminal block.
■
If 220 to 240 V AC is not supplied, check the following points.
1 Check that the earth leakage breaker is turned ON.
2 Check that the power cord is connected securely to the terminal
block.
Check that approx. 220 to 240 V AC is supplied between TAB1 and
TAB2 (orange) on the power circuit board (JT-30P8H).
Check that approx. 220 to 240 V AC is supplied to the following
points in the order of 1 and 2.
1 Between TAB20 and TAB21 (red)
If approx. 220 to 240 V AC is not supplied, check the power
supply voltage of the earth leakage breaker.
2 Between TAB22 and TAB23 (orange)
If approx. 220 to 240 V AC is not supplied, replace the filter
circuit board (JT-30F8).
●When 220 to 240 V AC is supplied, check the following points.
Connector disconnection for
the display circuit
board (JT-30S5)
Connector disconnection between
the circuit boards
Malfunction of the
control circuit board
(JT-30M8A/JT30M8/JT-30M9A)
Malfunction of
the power circuit
board (JT-30P8H)
Check if the connector CN19 on the display circuit board (JT30S5R) or CN18 on the control circuit board (JT-30M8A/JT-30M8/
JT-30M9A) is disconnected.
Check if the connector CN2 on the power circuit board (JT-30P8H)
or CN5 on the control circuit board (JT-30M8A/JT-30M8/JT-30M9A)
is disconnected.
If no error is found after checking the above, replace the control
circuit board (JT-30M8A/JT-30M8/JT-30M9A).
If the hand dryer does not operate even after replacing the control
circuit board (JT-30M8A/JT-30M8/JT-30M9A), replace the power
circuit board (JT-30P8H).
─ 13 ─
Error Mode Display Checkpoint Check Method and Remedy
Power
Heater/Check
or
(Tamper-proof timer)
Dirty sensor
window
Remaining foreign
object
Connector disconnection for the
sensors
Dirt may shield the sensors. Wipe the dirt off the sensor window.
Check for any objects left over and shielding the sensor in the hand
drying area.
Check if the following connectors are disconnected.
1 Sensor circuit board (JT-30S3R) connector CN12
2 Sensor circuit board (JT-30S2R) (2 locations) connectors CN15
3 Light receiving circuit board (JT-30S1R) connector CN11
4 Control circuit board (JT-30M8A/JT-30M8/JT-30M9A) connec-
tors CN7 and CN8
Malfunction of the
control circuit board
If no error is found after checking the above, replace the control
circuit board (JT-30M8A/JT-30M8/JT-30M9A).
(JT-30M8A/JT30M8/JT-30M9A)
Power
Heater/Check
(Motor start error)
(Motor lock)
(Motor over-revolution)
Power
Heater/Check
(Motor overcurrent error)
( Current detection circuit
error)
Power
Heater/Check
( Motor power error)
Power
Heater/Check
( Motor signal error)
Power
Heater/Check
(Microcomputer error)
Motor malfunction Check that the motor is not locked and turns smoothly by hand.
Malfunction of
the power circuit
If no error is found after checking the above, replace the power
circuit board (JT-30P8H).
board (JT-30P8H)
Blower (assembly) malfunction
If the error display persists after replacing the power circuit board
(JT-30P8H), replace the blower (assembly).
Motor overload Check for causes of motor overload. (Too much higher power sup-
ply voltage, any object disturbing the motor revolution, etc.)
Connector disconnection for the
Check if the motor lead wire connectors (black, white, and red) are
disconnected.
motor
Blown thermal
fuse of the motor
Measure the resistance between Red and White and between Red
and Black of the motor lead wires. If it is ∞ Ω, replace the blower
(assembly).
Malfunction of
the power circuit
board (JT-30P8H)
Abnormal power
supply voltage
If no error is found after checking the above, or if the error display
persists after replacing the blower (assembly), replace the power
circuit board (JT-30P8H).
Check that correct power supply voltage is applied.
• The error will occur if the power supply voltage is approx. 359 V
AC or over, or approx. 127 V AC or under.
*Note: If 359 V AC or over is applied, a current fuse on the power
circuit board (JT-30P8H) may blow.
Malfunction of
the power circuit
If no error is found after checking the above, replace the power
circuit board (JT-30P8H).
board (JT-30P8H)
Connector disconnection
Check if the connector CN5 on the control circuit board (JT-30M8A/
JT-30M8/JT-30M9A) or CN2 on the power circuit board (JT-30P8H)
is disconnected.
Malfunction of the
control circuit board
If no error is found after checking the above, replace the control
circuit board (JT-30M8A/JT-30M8/JT-30M9A).
(JT-30M8A/JT30M8/JT-30M9A)
Malfunction of the
Replace the control circuit board (JT-30M8A/JT-30M8/JT-30M9A).
control circuit board
(JT-30M8A/JT30M8/JT-30M9A)
─ 14 ─
Troubles without error display
Symptom Cause Check Method and Remedy
Warm air does not blow.
( JT-SB216JSH2-W/H/S-
NE)
Heater switch Check that the heater switch is turned ON.
(Heater lamp lights with the heater switch ON.)
Connector disconnection for the
Check if the connectors TAB3 and TAB4 on the power circuit board
(JT-30P8H) are disconnected.
heater
Blown thermal
fuse of the heater
Measure the resistance between the connectors TAB3 and TAB4
on the power circuit board (JT-30P8H).
At a heater temperature of 0°C or over: 100 Ω or under
If the fuse is blown, the resistance will be ∞ Ω.
In this case, replace the heater (PTC) and the power circuit board
(JT-30P8H).
The hand dryer operates
by itself.
The hand dryer does not
stop operation.
Air speed switch does not
change the air volume.
The hand dryer makes
abnormal noises.
Air blow is weak.
Malfunction of
the power circuit
board (JT-30P8H)
Check that approx. 220 to 240 V AC is output at both ends of the
connectors TAB3 and TAB4 on the power circuit board (JT-30P8H).
If it is not output, replace the power circuit board (JT-30P8H).
*Note: Approx. 220 to 240 V AC is output during operation, and it is
not output during standby.
Heater malfunction
Connector disconnection for the
sensors
If no error is found after checking the above, replace the heater
(PTC).
Check if the following connectors are disconnected.
1 Sensor circuit board (JT-30S3R) connector CN12
2 Sensor circuit board (JT-30S2R) (2 locations) connectors CN15
3 Light receiving circuit board (JT-30S1R) connector CN11
4 Control circuit board (JT-30M8A/JT-30M8/JT-30M9A) connec-
tors CN7 and CN8
Malfunction of
the sensor circuit boards (JT30S1/2/3R)
Visually check the sensor circuit boards for a defect such as a
crack, corrosion, or a cold solder joint.
If the error persists after replacing the control circuit board (JT30M8A/JT-30M8/JT-30M9A) in the next procedure, replace the
damaged sensor circuit boards (JT-30S1/2/3R).
Malfunction of the
control circuit board
If no error is found after checking the above, replace the control
circuit board (JT-30M8A/JT-30M8/JT-30M9A).
(JT-30M8A/JT30M8/JT-30M9A)
Connector disconnection
Check if the connector CN21 on the control circuit board (JT30M8A/JT-30M8/JT-30M9A) or CN4 on the power circuit board
(JT-30P8H) is disconnected.
Malfunction of
the power circuit
If no error is found after checking the above, replace the power
circuit board (JT-30P8H).
board (JT-30P8H)
Sucking of foreign
matter
Check for any foreign matter sticking to the blower (assembly)
vanes.
Clogged filter Check the filter for clogging with dust, etc.
Incorrect wiring Check if the motor lead wires of the blower (assembly) (red to
TAB7, white to TAB8, black to TAB9) are connected to incorrect
TABs on the power circuit board (JT-30P8H).
( If they are connected incorrectly, the motor turns in the reverse
direction.)
Malfunction of
the power circuit
If no error is found after checking the above, replace the power
circuit board (JT-30P8H).
board (JT-30P8H)
─ 15 ─
10. How to call
Symptom Remedy
Air blow is too weak to dry hands
quickly.
Water leaks from the product.
Air does not blow immediately after
turning on the power and inserting
hands.
Warm air does not blow.
(JT-SB216JSH2-W/H/S-NE)
The product has an abnormal odor.
1 Check if the filter is clogged.
2 Isn’t the air speed switch set at the STANDARD position?
1 Check if the drain tank is filled up. (Empty the drain tank.)
*Note: Drain water will overflow onto the floor when the drain tank is
2 Is the drain tank installed properly?
Initial setting takes 1.5 seconds after turning on the power. Operation
is disabled in the meantime.
1 Is the heater switch turned ON?
2 Is the room temperature lower than 32°C?
1 Check if the drain tank is filled up. (Empty the drain tank.)
Check the inside of the drain tank for any foreign matter. (Remove it.)
2
3 Is the inside of the side cover cleaned up?
11. Service inspection list
Location Inspection Item Check Result
Electric wiring
Are lead wire connectors connected securely?
filled up beyond its capacity.
Is the wiring correct?
Lamps Do the power lamp (LED1), the heater lamp (LED2) (JT-
SB216JSH2-W/H/S-NE only, with the heater switch ON), and
blue indicators (LED10, 11) come on?
Operation Does it operate properly?
Isn’t there any abnormal noise, vibration, etc?
Heater
(JT-SB216JSH2-W/H/S-NE)
Wall installation Isn’t there clearance between the product and the back wall?
Is warm air blown?
─ 16 ─
12. Overhauling procedures
Work precautions
• Before replacing parts, follow the instructions described in the troubleshooting.
• When servicing, always take care to keep proper footing.
• Before starting the service, always unplug the power cord from the outlet, or turn off the earth leakage
breaker when no power cord plug is provided. Sufficient care must be taken to avoid electric shock or injury.
• Make sure to connect the power supply wires correctly.
• After completing repairs, check that the unit operates properly.
Always wear gloves when servicing.
(1)
Turn off the power supply.
1 Stop the operation.
2 Turn off the earth leakage breaker on the distribution board.
(2) Light receiving circuit board (JT-30S1R)
1 Unscrew the clamping screws, and remove the maintenance (maint.)
cover.
(Two special (spl) screws 4 x 16, indicated by )
Assembly precaution
Insert the maint. cover into the groove of the base. (Indicated by )
2 Remove the fix plate.
Assembly precautions
• Run the lead wires through the groove of the maint. cover.
(Indicated by )
• Take care not to pinch the lead wires.
Maint. cover
Fix plate
─ 17 ─
Maint. cover
3 Remove the light receiving circuit board (JT-30S1R).
Light receiving circuit board (JT-30S1R)
(3) Control circuit board (JT-30M8A/JT-30M8/JT-30M9A)
1 Draw out the drain tank (Tank assembly).
2 Unscrew the clamping screws, and remove the front panel.
(Two spl screws 4×16, indicated by )
3 Disconnect the lead wires from the control circuit board (JT-30M8A/
JT-30M8/JT-30M9A).
4 Unscrew the clamping screw, and remove the control circuit board
(JT-30M8A/JT-30M8/JT-30M9A).
(One spl screw 4×12, indicated by )
Assembly precaution
Take care not to pinch the lead wires.
(4) Sensor circuit board (JT-30S2R)
Front panel
Control circuit board
(JT-30M8A/JT-30M8/JT-30M9A)
Fix piece
1 Remove the front panel. → See (3) 1 to 2.
2
Unscrew the clamping screws for the panel holders (left (L) and right (R)).
(Two PTT screws 4×16, indicated by )
3 Unscrew the clamping screws
(Two spl screws 4×12, indicated by )
4 Slightly push aside the panel holders to
locations)
5 Remove the sensor circuit boards (JT-30S2R)
Assembly precautions
• Insert the sensor circuit board between the claws of the fix piece.
• Take care not to pinch the lead wires.
•
After installing the circuit board, make sure that the LED is upright.
for the
fix pieces.
take out the fix pieces. (Two
from the fix pieces.
─ 18 ─
Panel holder (L, R)
Fix piece
Sensor circuit board (JT-30S2R)
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