Hakko Electronics 936 User manual

2
3. WARNINGS AND CAUTIONS
In this instruction manual, “WARNING” and “CAUTION” are defined as follows.
WARNING
WARNING: Misuse may potentially cause death of, or serious injury to, the user.
CAUTION : Misuse may potentially cause injury to the user or physical damage
to the objects involved.
For your own safety, be sure to comply with these precautions.
CAUTION
When the power is on, the tip temperature is between
200°C/392°F and 480°C/ 896°F.
Since mishandling may lead to burns or fire, be sure to comply with
the following precautions.
zDo not touch the metallic parts near the Tip.
zDo not use the product near flammable items.
zAdvise other people in the work area that the unit can reach a very high
temperature and should be considered potentially dangerous.
zTurn the power off while taking breaks and when finished using the unit.
zBefore replacing parts or storing the unit, turn the power off and allow the unit
to cool to room temperature.
To prevent damage to the unit and ensure a safe working
environment, be sure to comply with the following precautions.
zDo not use the unit for applications other than soldering.
zDo not rap the soldering iron against the work bench to shake off residual
solder, or otherwise subject the iron to severe shocks.
zDo not modify the unit.
zUse only genuine HAKKO replacement parts.
zDo not wet the unit or use the unit when your hands are wet.
zThe soldering process will produce smoke, so make sure the area is well
ventilated.
zWhile using the unit, don’t do anything which may cause bodily harm or
physical damage.
9
Disassembling the 900S
1. Slide the handle cover (2) toward the cord and
remove the screw (1) securing the heating element.
2. Turn the nut (3) counterclockwise and remove it.
3. Remove the tip (4).
4. Pull both the heating element (5) and the cord toward
the tip of the iron and out of the handle (6).
Measure the resistance values at the sensor and the
heating element of the terminal board.
The resistance value should be the same as for the 907,
908.
To replace the heating element, refer to the instructions
included with the replacement part.
1. Turn the unit ON and set the temperature control knob
to 480°C (896°F). Then wiggle and kink the iron cord
at various locations along its length, including in the
strain relief area. If the LED heater lamp flickers, then
the cord needs to be replaced.
2. Check the resistance between the pin of the plug and
the wire on the terminal.
Pin 1: Red Pin 2: Blue Pin 3: Green Pin 4: White
Pin 5: Black
The value should be 0 Ω. If it is greater than 0 Ωor is
∞, the cord should be replaced.
Refer to the drawing in the replacement parts section of
this manual. Desolder the blown fuse and remove it.
Solder on a new one.
2. Broken Soldering Iron
Cord
There are two methods of testing
the soldering iron cord.
3. Replacing the Fuse
CAUTION
The LED heater lamp will flicker even
with a normal Iron cord if the
temperature reaches 480°C (896°F).

3
4. PART NAMES
Iron receptacle
Large cleaning
sponge
Small cleaning
sponge
Cord assembly
Iron holder base
LED heater lamp
Temp. control knob
Knob mount
Power switch
CAL pot plug/calibrator
Hex wrench
5. SETTING UP & OPERATING THE HAKKO 936
CAUTION : The sponge is compressed. It will swell when moistened with water.
Before using the unit, dampen the sponge with the water and squeeze it dry.
Failure to do so may result in damage to the soldering tip.
A. Iron holder
1. Small cleaning sponge
Dampen the small cleaning sponge
with water and then squeeze it dry.
Place it in one of the 4 openings
of the iron holder base.
2. Add water to approximately the
level as shown. The small sponge
will absorb water to keep the larger
sponge above it wet at all times.
*The large sponge may be used alone
(w/o small sponge & water).
3. Dampen the large cleaning sponge
and place it on the iron holder base.
Note: The iron receptacles for the 900
(S) and the 907/908 soldering
irons are different. Be sure to use
the proper one for each type of
soldering iron. (Refer to Parts List).
8
11. CHECKING FOR BREAKAGE OF THE HEATING ELEMENT AND CORD ASSEMBLY
Disconnect the plug and measure
the resistance value between the
connecting plug pins as follows.
If the values of “a” and “b” are
outside the above value, replace the
heating element (sensor) and/or
cord assembly. Refer to Procedures
1 and 2.
If the value of “c” is over the above
value, remove the oxidization film by
lightly rubbing with sand-paper or
steel wool the points shown below.
1. Broken Heating Element Disassembling the 907/908
1. Turn the nut (1) counterclockwise
and remove the tip enclosure (2),
the tip (3).
2. Turn the nipple (4)
counterclockwise and remove it
from the iron.
3. Pull both the heating element (6)
and the cord assembly (11) out
of the handle (12). (Toward the tip
of the iron).
4. Pull the grounding spring (5) out
of the sleeve.
Heating Element (Red) Sensor (Blue)
Measure when the heating element is at room temperature.
1. Resistance value of heating element (RED) 2.5 - 3.5 Ω
2. Resistance value of sensor (BLUE) 43- 58 Ω
If the resistance value is not normal, replace the heating
element.
(Refer to the instructions included with the replacement part.)
After replacing the eating Element,
1. Measure the resistance value between 1) pins 4 and 1
or 2; 2) pins 5 and 1 or 2. If it is not ∞, the heating
element and sensor are touching. This will damage
the P.W.B.
2. Measure the resistance value “a”, “b”, and “c” to
confirm that the leads are not twisted and that the
grounding spring is properly connected.
Between pins 4&5 (Heating Element)
Between pins 1&2 (Sensor)
Between pin 3&Tip
a
b
c
2.5 - 3.5 Ω(Normal)
43 - 58 Ω(Normal)
< 2 Ω

4
B. Connections
1. Connect the cord assembly to
the receptacle.
2. Place the soldering iron in the
iron holder.
3. Plug the power cord into the
power supply. Be sure to ground
the unit.
C. Set the temperature
1. Set the temperature control knob
to the desired temperature.
2. Lock the knob.
The HAKKO 936 station is
equipped with a temperature
control knob lock. After setting
the desired temperature, tighten
the hex nut on the underside of
the knob mount using the
supplied hex wrench. Turn the nut
clockwise to tighten the knob
lock.
D. Turn on the power switch.
The heater lamp blinks on and off
when the tip temperature
reaches the set temperature. The
unit is now ready to perform
soldering work.
For greater convenience, and
soldering efficiency, two stations
can be securely stacked as
shown.
CAUTION : Be sure to turn off the power switch before connecting or disconnecting the
soldering iron. Failure to do so may damage the P.W.B.
CAUTION : • Don’t overtighten the knob lock.
• Don’t attempt to turn the knob when the knob lock is on.
CAUTION : The soldering iron must be placed in the iron holder when not in use.
Receptacle
Align the grooves
and pins. And
push straight in.
Turn clockwise
firmly.
7
10. TROUBLESHOOTING GUIDE
Problem 1.
The heater lamp does not light up.
Problem 2.
The heater lamp lights up but the
tip does not heat up.
Problem 3.
The tip heats up intermittently.
Problem 4.
The tip is not wet.
Problem 5.
The tip temperature is too low.
Problem 6.
The tip can not be pulled off.
Problem 7.
The tip doesn’t hold the desired
temperature.
WARNING : * Disconnect the power plug before servicing.
Failure to do so may result in electric shock.
* If the power cord is damaged, it must be replaced by the manufacturer, its
service agent or similarity qualified person in order to avoid personal injury or
damage to the unit.
Check 1. Is the power cord and/or connecting plug
disconnected?
• Connect it.
Check 2. Is the fuse blown?
• Determine why the fuse blew and eliminate the cause,
then replace the fuse.
a. Is the inside of the iron short-circuited?
b. Is the grounding spring touching the heating element?
c. Is the heating element lead twisted and short-circuited?
Check 3. Is the soldering iron cord broken?
• Refer to “Checking for breakage in the cord assembly.”
Check 4. Is the Heating Element broken?
• Refer to “Checking for breakage in the heating
element.”
¨¨
¨¨
¨Check 3
Check 5. Is the tip temperature too high?
• Set an appropriate temperature.
Check 6. Is the tip clean?
• Refer to “Tip Care and Use”
Check 7. Is the tip coated with oxide?
• Refer to “Inspect and clean the tip”
Check 8. Is the iron calibrated correctly?
• Recalibrate.
Check 9. Is the tip seized?
Is the tip swollen because of deterioration?
• Replace the tip and the heating element.
¨¨
¨¨
¨Check 8

4
B. Connections
1. Connect the cord assembly to
the receptacle.
2. Place the soldering iron in the
iron holder.
3. Plug the power cord into the
power supply. Be sure to ground
the unit.
C. Set the temperature
1. Set the temperature control knob
to the desired temperature.
2. Lock the knob.
The HAKKO 936 station is
equipped with a temperature
control knob lock. After setting
the desired temperature, tighten
the hex nut on the underside of
the knob mount using the
supplied hex wrench. Turn the nut
clockwise to tighten the knob
lock.
D. Turn on the power switch.
The heater lamp blinks on and off
when the tip temperature
reaches the set temperature. The
unit is now ready to perform
soldering work.
For greater convenience, and
soldering efficiency, two stations
can be securely stacked as
shown.
CAUTION : Be sure to turn off the power switch before connecting or disconnecting the
soldering iron. Failure to do so may damage the P.W.B.
CAUTION : • Don’t overtighten the knob lock.
• Don’t attempt to turn the knob when the knob lock is on.
CAUTION : The soldering iron must be placed in the iron holder when not in use.
Receptacle
Align the grooves
and pins. And
push straight in.
Turn clockwise
firmly.
7
10. TROUBLESHOOTING GUIDE
Problem 1.
The heater lamp does not light up.
Problem 2.
The heater lamp lights up but the
tip does not heat up.
Problem 3.
The tip heats up intermittently.
Problem 4.
The tip is not wet.
Problem 5.
The tip temperature is too low.
Problem 6.
The tip can not be pulled off.
Problem 7.
The tip doesn’t hold the desired
temperature.
WARNING : * Disconnect the power plug before servicing.
Failure to do so may result in electric shock.
* If the power cord is damaged, it must be replaced by the manufacturer, its
service agent or similarity qualified person in order to avoid personal injury or
damage to the unit.
Check 1. Is the power cord and/or connecting plug
disconnected?
• Connect it.
Check 2. Is the fuse blown?
• Determine why the fuse blew and eliminate the cause,
then replace the fuse.
a. Is the inside of the iron short-circuited?
b. Is the grounding spring touching the heating element?
c. Is the heating element lead twisted and short-circuited?
Check 3. Is the soldering iron cord broken?
• Refer to “Checking for breakage in the cord assembly.”
Check 4. Is the Heating Element broken?
• Refer to “Checking for breakage in the heating
element.”
¨¨
¨¨
¨Check 3
Check 5. Is the tip temperature too high?
• Set an appropriate temperature.
Check 6. Is the tip clean?
• Refer to “Tip Care and Use”
Check 7. Is the tip coated with oxide?
• Refer to “Inspect and clean the tip”
Check 8. Is the iron calibrated correctly?
• Recalibrate.
Check 9. Is the tip seized?
Is the tip swollen because of deterioration?
• Replace the tip and the heating element.
¨¨
¨¨
¨Check 8

3
4. PART NAMES
Iron receptacle
Large cleaning
sponge
Small cleaning
sponge
Cord assembly
Iron holder base
LED heater lamp
Temp. control knob
Knob mount
Power switch
CAL pot plug/calibrator
Hex wrench
5. SETTING UP & OPERATING THE HAKKO 936
CAUTION : The sponge is compressed. It will swell when moistened with water.
Before using the unit, dampen the sponge with the water and squeeze it dry.
Failure to do so may result in damage to the soldering tip.
A. Iron holder
1. Small cleaning sponge
Dampen the small cleaning sponge
with water and then squeeze it dry.
Place it in one of the 4 openings
of the iron holder base.
2. Add water to approximately the
level as shown. The small sponge
will absorb water to keep the larger
sponge above it wet at all times.
*The large sponge may be used alone
(w/o small sponge & water).
3. Dampen the large cleaning sponge
and place it on the iron holder base.
Note: The iron receptacles for the 900
(S) and the 907/908 soldering
irons are different. Be sure to use
the proper one for each type of
soldering iron. (Refer to Parts List).
8
11. CHECKING FOR BREAKAGE OF THE HEATING ELEMENT AND CORD ASSEMBLY
Disconnect the plug and measure
the resistance value between the
connecting plug pins as follows.
If the values of “a” and “b” are
outside the above value, replace the
heating element (sensor) and/or
cord assembly. Refer to Procedures
1 and 2.
If the value of “c” is over the above
value, remove the oxidization film by
lightly rubbing with sand-paper or
steel wool the points shown below.
1. Broken Heating Element Disassembling the 907/908
1. Turn the nut (1) counterclockwise
and remove the tip enclosure (2),
the tip (3).
2. Turn the nipple (4)
counterclockwise and remove it
from the iron.
3. Pull both the heating element (6)
and the cord assembly (11) out
of the handle (12). (Toward the tip
of the iron).
4. Pull the grounding spring (5) out
of the sleeve.
Heating Element (Red) Sensor (Blue)
Measure when the heating element is at room temperature.
1. Resistance value of heating element (RED) 2.5 - 3.5 Ω
2. Resistance value of sensor (BLUE) 43- 58 Ω
If the resistance value is not normal, replace the heating
element.
(Refer to the instructions included with the replacement part.)
After replacing the eating Element,
1. Measure the resistance value between 1) pins 4 and 1
or 2; 2) pins 5 and 1 or 2. If it is not ∞, the heating
element and sensor are touching. This will damage
the P.W.B.
2. Measure the resistance value “a”, “b”, and “c” to
confirm that the leads are not twisted and that the
grounding spring is properly connected.
Between pins 4&5 (Heating Element)
Between pins 1&2 (Sensor)
Between pin 3&Tip
a
b
c
2.5 - 3.5 Ω(Normal)
43 - 58 Ω(Normal)
< 2 Ω

2
3. WARNINGS AND CAUTIONS
In this instruction manual, “WARNING” and “CAUTION” are defined as follows.
WARNING
WARNING: Misuse may potentially cause death of, or serious injury to, the user.
CAUTION : Misuse may potentially cause injury to the user or physical damage
to the objects involved.
For your own safety, be sure to comply with these precautions.
CAUTION
When the power is on, the tip temperature is between
200°C/392°F and 480°C/ 896°F.
Since mishandling may lead to burns or fire, be sure to comply with
the following precautions.
zDo not touch the metallic parts near the Tip.
zDo not use the product near flammable items.
zAdvise other people in the work area that the unit can reach a very high
temperature and should be considered potentially dangerous.
zTurn the power off while taking breaks and when finished using the unit.
zBefore replacing parts or storing the unit, turn the power off and allow the unit
to cool to room temperature.
To prevent damage to the unit and ensure a safe working
environment, be sure to comply with the following precautions.
zDo not use the unit for applications other than soldering.
zDo not rap the soldering iron against the work bench to shake off residual
solder, or otherwise subject the iron to severe shocks.
zDo not modify the unit.
zUse only genuine HAKKO replacement parts.
zDo not wet the unit or use the unit when your hands are wet.
zThe soldering process will produce smoke, so make sure the area is well
ventilated.
zWhile using the unit, don’t do anything which may cause bodily harm or
physical damage.
9
Disassembling the 900S
1. Slide the handle cover (2) toward the cord and
remove the screw (1) securing the heating element.
2. Turn the nut (3) counterclockwise and remove it.
3. Remove the tip (4).
4. Pull both the heating element (5) and the cord toward
the tip of the iron and out of the handle (6).
Measure the resistance values at the sensor and the
heating element of the terminal board.
The resistance value should be the same as for the 907,
908.
To replace the heating element, refer to the instructions
included with the replacement part.
1. Turn the unit ON and set the temperature control knob
to 480°C (896°F). Then wiggle and kink the iron cord
at various locations along its length, including in the
strain relief area. If the LED heater lamp flickers, then
the cord needs to be replaced.
2. Check the resistance between the pin of the plug and
the wire on the terminal.
Pin 1: Red Pin 2: Blue Pin 3: Green Pin 4: White
Pin 5: Black
The value should be 0 Ω. If it is greater than 0 Ωor is
∞, the cord should be replaced.
Refer to the drawing in the replacement parts section of
this manual. Desolder the blown fuse and remove it.
Solder on a new one.
2. Broken Soldering Iron
Cord
There are two methods of testing
the soldering iron cord.
3. Replacing the Fuse
CAUTION
The LED heater lamp will flicker even
with a normal Iron cord if the
temperature reaches 480°C (896°F).