Hakko electronics 703b User manual

®

Rework System

Instruction Manual

●

Thank you for purchasing the HAKKO 703B Rework System.

This manual describes the use and maintenance of the HAKKO 703B.

Please read it before using the unit. Keep this manual readily

accessible for reference.

●

CAUTION

Before Plugging In!

REMOVE the pump securing screw (M4 ×25, red) from

the bottom of the 703B station before using it. Leaving the

screw in place will cause serious problems. Be sure to

SAVE THIS SCREW!

REPLACE the pump securing screw (M4 ×25, red) into

the bottom of the 703B station before transporting it.

Leaving the screw out will cause serious problems.

TABLE OF CONTENTS

PACKING LIST ............................................................................................ 1

SPECIFICATIONS....................................................................................... 2

SAFETY INSTRUCTIONS .......................................................................... 2

PART NAMES ............................................................................................. 3

SETTING UP .............................................................................................. 5

OPERATION (SOLDERING IRON) ............................................................. 7

(DESOLDERING IRON/GUN) ............................................... 8

MAINTENANCE (SOLDERING IRON) ..................................................... 10

(DESOLDERING IRON/GUN) ....................................... 11

(STATION) ...................................................................... 13

PARAMETERS .......................................................................................... 15

CALIBRATION OF IRON TEMPERATURE ............................................... 16

ERROR MESSAGES ................................................................................ 17

BEFORE SERVICING ...... ........................................................................ 18

REPLACEMENT PARTS (SOLDERING IRON) ....................................... 19

REPLACEMENT/OPTIONAL PARTS (DESOLDERING IRON) ............... 20

PARTS LIST (STATION) ........................................................................... 21

(HAKKO 907/IRON HOLDER) ............................................. 22

(HAKKO 807/817) ................................................................ 23

WIRING DIAGRAM ................................................................................... 24

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PACKING LIST Please check to make sure that all items listed

below are included in the Hakko 703B package.

703B-1 and 703B-2

Station ........................................................ 1

Soldering iron (Hakko 907) ........................2

Spring filter ................................................. 3

Ceramic paper filter (S) .............................. 2

Ceramic paper filter (L) .............................. 4

Cleaning pin for ø1.0 mm (0.04 in.) nozzle ...

1

703B-1

Desoldering iron (Hakko 807) ....................1

Filter pipe with filter holder,

spring filter & ceramic paper filter (L) ......... 1

Cleaning brush for Hakko 807 ................... 1

Iron holder for Hakko 807 .......................... 1

Cleaning pin for heating element ............... 1

Cleaning drill for ø1.0mm (0.04 in.) nozzle 1

Spanner (for desoldering iron/gun) ............ 1

Silicone grease .......................................... 1

Instruction manual...................................... 1

703B-2

Desoldering gun (Hakko 817) .................... 1

Filter pipe with front holder,

spring filter & ceramic paper filter (L) ......... 1

Iron holder for Hakko 817 .......................... 1

Station

Soldering iron (HAKKO 907 ) Desoldering iron (HAKKO 807 )

Iron holder (only use for 703B-1)Iron holder (only use for 703B-2)

Spring filter

Ceramic paper filter (S)

Ceramic paper filter (L) Cleaning pin for ø1.0mm (0.04 in.) nozzle

Cleaning pin for heating element

Silicone grease

Cleaning drill for ø1.0mm (0.04 in.) Nozzle

Spanner (for 807/817)

Desoldering gun

(for 817 )

Cleaning brush (only use for 807)

Filter pipe (only use for 807)

Filter pipe (only use for 817)

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SPECIFICATIONS

Soldering Output Voltage 24VAC

Desoldering Iron

Temperature

200 - 480°C (400 - 899°F)

Desoldering Output Voltage 24VAC

Vacuum

Generator

Vacuum pump,

double cylinder type

Vacuum

Pressure

80kpa (600mm. Hg)

(24 in. Hg)

Suction Flow 15 l/min.

Temperature

350 - 450°C (662 - 842°F)

Dimensions

215(W) ×257(D) ×170(H) mm (8.5 ×10.1 ×6.7 in.)

Weight (w/o cord)

6.0kg (13.2 lbs.)

Name HAKKO 703B

Power Consumption

Station

220W Name HAKKO 807

24VAC, 60W

Under 2 Ω

Under 2 mV

Ceramic heater

A1003 (1.0 mm / 0.04 in.)

1.2 m (4 ft.)

205 mm (8.07 in.)

160 g (0.35 lbs.)

Power consumption

Nozzle to ground resistance

Nozzle to ground potential

Heating element

Standard nozzle

Cord length

Total length (w/o cord)

Weight (w/o cord)

Desoldering Gun

Name HAKKO 817

24VAC, 60W

Under 2 Ω

Under 2 mV

Ceramic heater

A1003 (1.0 mm / 0.04 in.)

1.2 m (4 ft.)

205 mm (8.07 in.)

160 g (0.35 lbs.)

Power consumption

Nozzle to ground resistance

Nozzle to ground potential

Heating element

Standard nozzle

Cord length

Total length (w/o cord or hose)

Weight (w/o cord or hose)

Soldering Iron

Name HAKKO 907

24VAC, 50W

Under 2 Ω

Under 2 mV

Ceramic heater

900M-T-1.6D

1.2 m (4 ft.)

190 mm (7.5 in.)

44g (0.09 lbs.)

Power consumption

Tip to ground resistance

Tip to ground potential

Heating element

Standard tip

Cord length

Total length (w/o cord)

Weight (w/o cord)

SAFETY INSTRUCTIONS

Warnings, cautions and notes are placed at critical points in this manual to direct the operator’s attention to

significant items. They are defined as follows:

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.

NOTE: A NOTE indicates a procedure or point that is important to the process being described.

EXAMPLE: An EXAMPLE is given to demonstrate a particular procedure, point or process.

CAUTION

High Temperature

The tip or nozzle temperature can reach as high as 400°C

(750°F) when power is on. Mishandling may lead to burns

or fire. Be sure to comply with the following precautions:

●Do not touch metallic parts near the tip/nozzle.

●Do not use the product near flammable items.

●Advise other people in the work area that the unit can

reach a very high temperature and should be

considered potentially dangerous.

●Turn the power off when no longer using the Hakko

703B or leaving it unattended.

●Before replacing parts or storing the unit, turn the

power off and allow the unit to cool to room

temperature.

Be sure to comply with the following precautions:

●Do not use the unit for applications other than

soldering or desoldering.

Before Plugging In!

Be sure to remove the pump securing screw (M4 ×25, marked red) from the bottom of the station. Failure to do so may result

in serious problems.

●Do not rap the iron against the work bench to shake off

residual solder, or otherwise subject the iron to severe

shocks.

●Do not modify the unit.

●Use only genuine HAKKO replacement parts.

●Turn the switch off before connecting or disconnecting

the soldering/desoldering iron connecting cord from

the cord receptacle on the station.

●Do not wet the unit or use the unit with wet hands.

●Use the ceramic paper filter (S) for the filter retainer

(station), and the ceramic paper filter (L) for the filter

pipe (iron/gun).

●Maintain the station, the soldering irons, and

desoldering gun.

While using the unit, don’t do anything that could cause

bodily harm or physical damage. 2

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PART NAMES

●Station

Power Switch

Temperature Display

DESOLDER

Receptacle

Vacuum Outlet Cap

SOLDER

Switch

Receptacle

Power Cord

Fuse Holder

CAL

(Calibrator for Desoldering Iron)

Set the ceramic paper filter (S).

Connects with the hose of HAKKO 807

desoldering iron.

CAL

(Calibrator for Soldering Iron A and B)

Used for calibrating the temperature

after replacing the heating element,

desoldering iron and nozzle.

Membrane Sheet

POWER

DESOLDER

SOLDER

OFF

ON

VACUUM

OFF

ON

OFF

ON

OFF

ON

SOLDER

A. IRON B. IRON IRON

Heater Lamp

Temperature Display

Switch

Membrane Sheet

Mini-jack

CAL

IRON

B.IRON

A.IRON

Used for calibrating the temperature after replacing the

heating element, soldering iron and tip.

Connects to the foot switch (option)

for desoldering iron.

Lamp turns on and off when the heating

element gets electricity.

UP

DOWN

UP

DOWN

UP

DOWN

For entering

temperature data. For entering

temperature data.

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●Soldering iron (HAKKO 907 )

Soldering Tip

Cord Assembly

Connects to the receptacle.

Heating Element (Inside Pipe)

Nozzle Button

Push to start absorption. Hose

Connects to the vacuum outlet cap.

Back Holder

Filter Pipe (Inside Housing)

Set the ceramic paper filter (L).

Contains melted solder and flux

using filters.

Filter is expendable part.

Cord Assembly

Connects to the receptacle.

●Desoldering iron (HAKKO 807 )

●Desoldering gun (HAKKO 817 )

Hose Cord assembly

Filter Pipe

Back holde

assembly

Heating element

Nozzle

Trigger

Release Knob

Indicator

Transmits heat for melting solder.

Entrance for melted solder.

Expendable part

Secures the filter pipe.

Push down to remove

the filter pipe.

Indicates when nozzle and

heatingelement need cleaning

and when filters need replacing.

Connects to the vacuum outlet cap (station).Connects to the receptacle (station).

Squeeze to start extraction.

Do not pull the trigger before

fully heating the nozzle.

Inside requires cleaning.

Insert the ceramic paper folter (L) (No.A1033).

Contains filters which arrest melted solder and flux.

Filter are expendable parts.

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SETTING UP

Iron holders

CAUTION:

The sponge is compressed. It will swell

when moistened with water. Before using

the unit, dampen the sponge with water and

squeeze it dry. Using a dry sponge may

damage the soldering tip.

1. Dampen the small cleaning sponge with

water and squeeze it dry. Place it in one of

the four openings in the iron holder base.

2. Add water to approximately the level

shown at the right. The small sponge will

absorb water to keep the larger sponge

above it wet at all times.

Note: The large sponge may be used by

itself. In this case, it is not necessary to

insert the small sponge or add water.

3. Dampen the large cleaning sponge and

place it on the iron holder base.

The iron holder for HAKKO 950 can be set in

place of the iron holder A or B. Remove two

(2) screws A or B on the bottom of the iron

holder.

The difference between iron holder

No.C1317 and No.C1472 is only the iron

receptacle. The iron receptacle is changeable

to become either for 703B-1 or 703B-2.

WARNING:

Use appropriate iron holders. Failure to do so

can result in bodily injury or damage to the

equipment.

Note: Holders for extra soldering tips,

desoldering nozzles and cleaning pins

are provided as above.

for spare

Hakko soldering tip

(for Hakko 900 and 950)

for cleaning pins

(for nozzle and

heating element)

for spare

Hakko desoldering nozzle

No.C1317 for 703B-1

No.C1472 for 703B-2

iron holder A

iron holder B

screws B

screws A

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Connection

CAUTION:

Be sure to turn off the power switch before

connecting or disconnecting the soldering

iron. Failure to do so may result in damage

to the station.

1. Connect the connecting plug to the

receptacle on the front panel of the station.

Connect the A. IRON to the A.IRON

receptacle and the B.IRON to the B.IRON

receptacle.

Note: “A.IRON”and “B.IRON”are indicated

on the handles of the respective

soldering irons.

2. Place the soldering iron and desoldering

iron/gun in the iron receptacle on the iron

holder.

3. Plug the power cord into a power supply.

Be sure to ground the unit.

4. Turn the power switch to ON.

Receptacle

Turn clockwise firmly.

Align the grooves and pins,

and push straight in.

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Setting or changing the

temperature.

1. Turn the switch for the selected tool -

soldering iron (A.IRON or B.IRON) or

desoldering tool - to ON.

2. Set the temperature as follows (the

temperature can be adjusted between

200°C (400°F) and 480°C (899°F)):

3. Push the button and hold it down for at

least one second. The present

temperature setting will be displayed, and

then the HUNDREDS digit will begin to

flash. This flashing indicates that the

station is in the temperature setting mode

and data can be entered.

4. Enter the HUNDREDS digit.

•Use the or button to select the

desired value for the HUNDREDS digit.

For setting in degrees Celsius, either 2, 3

or 4 can be selected. For setting in

degrees Fahrenheit, values between 4

and 8 can be selected. When the desired

value is displayed, press the button.

5. Enter the TENS digit

•Press the or button to select the

desired value for the TENS digit. Any value

from 0 to 9 can be selected. When the

desired value is displayed, press the

button. The UNITS digit begins to flash.

6. Enter the UNITS digit.

•Use the or button to select the

desired value for the UNITS digit. Any

value from 0 to 9 can be selected. When

the desired value is displayed, press the

button. This will store the temperature

setting in memory and display the

temperature setting. Heater control

begins. Remove the card to lock the data.

The temperature setting may not exceed

480°C (899°F). If a temperature above this

limit is entered, the HUNDREDS digit

begins to flash again after entering the last

digit. Follow step 2 - 4 again with a

temperature setting below 480°C (899°F).

Note: The temperature is present at 400°C

(750°F) at the factory.

Example: 400°C(750°F) to 349°C(660°F)

Press the or .

UP

DOWN

Press the button once.

Press the or .

UP

DOWN

Press the button once.

Press the button.

OPERATION (Soldering iron)

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OPERATION (Desoldering iron/gun)

Preparation

Hakko 807 desoldering iron

1. Insert the filter pipe (with a filter holder,

spring filter and ceramic paper filter (L))

into the housing. Push and turn the back

holder clockwise.

Hakko 817 desoldering gun

∗The Hakko 817 desoldering gun comes

with the filter pipe installed. The filter pipe

includes the spring filter and ceramic paper

filter. No assembly is required.

2. Connect the cord assembly of the HAKKO

807 or 817 to the desolder receptacle

(marked “DESOLDER”).

3. Connect the hose to the vacuum outlet cap

(marked “VACUUM”).

4. Plug the power cord into the power supply

and turn the power switch to ON.

5. Turn the switch for desoldering to ON.

Desoldering

1. Set the temperature.

(Refer to Setting or changing the

temperature.)

Note: Always set the temperature as low as

possible for the work being done. The

temperature can be adjusted between

350 - 450°C (662 - 842°F).

Secure the plug by

turning it clockwise.

Attach the hose securely

over the vacuum outlet

cap.

Insert the cord

assembly by keying

the plug to the key

on the receptacle.

VACUUM

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2. Clean the tip of the nozzle.

Keep the solder-plated section of the

nozzle a shiny white by coating it with a

small amount of solder. If the tip of the

nozzle is coated with oxide, the nozzle’s

heat conductivity will be lowered. Coating

the tip with a small amount of fresh solder

ensures maximum heat conductivity.

If the tip of the nozzle is coated with oxide,

the nozzle's heat conductivity will be

lowered. Coating the tip with a small

amount of fresh solder ensures maximum

heat conductivity.

3. Melt the solder.

•Apply the nozzle to the soldered part and

melt the solder.

Note: Never allow the nozzle to touch the

board itself.

•Confirm that the solder is melted.

Note: To confirm that all the solder is melted,

observe the inside of the hole and the

back side of the P.W.B. If this is difficult

to do, try slowly moving the lead with

the nozzle if the lead moves, the solder

is melted.

Never move the lead by force.

If the lead does not move easily, the

solder has not fully melted.

4. Extract the solder.

After confirming that the solder is

completely melted, extract the solder by

pushing the button on the top of the 807

iron, pressing the trigger switch on the 817

gun, or stepping on the foot switch

(option).

Note: Never leave any solder remaining

inside the hole in the P.W.B.

5. Problems during desoldering.

If solder remains, resolder the component

and repeat the desoldering process.

Wipe away any oxide or old solder

from the nozzle using the hole in

the center of the sponge.

Absorb the solder by slowly

moving the lead back and

forth with the tip of the

nozzle while holding the

button or trigger.

Slowly move the

lead with the nozzle.

Nozzle

P.W.B.

Solder

Lead

OPERATION (Desoldering iron/gun)

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MAINTENANCE (Soldering iron)

Tip care and use •Tip temperature

High soldering temperatures can degrade

the tip. Use the lowest possible soldering

temperature.

The excellent thermal recovery

characteristics ensure efficient and

effective soldering even at low

temperature. This also protects the

soldered items from thermal damage.

•Cleaning

Clean the tip regularly with a clean

sponge, as oxides and carbides from the

solder and flux can form impurities on the

tip. These impurities can result in defective

joints or reduce the tip’s heat conductivity.

•Not in use

Never leave the soldering iron sitting at

high temperature for long periods of time

as the tip’s solder plating will become

covered with oxide, which can greatly

reduce the tip’s heat conductivity.

•After use

Wipe the tip clean and coat the tip with

fresh solder. This helps prevent tip

oxidation.

Inspect and clean the tip

1. Set the temperature to 250°C (482°F).

2. When the temperature stabilizes, clean

the tip with the cleaning sponge and

check the condition of the tip.

3. If there is black oxide on the solder

plated portion of the tip, apply new

solder containing flux and wipe the tip

on the cleaning sponge. Repeat until

the oxide is completely removed. Coat

with new solder.

NOTE:

NEVER file the tip to remove oxide.

4. If the tip is deformed or heavily

corroded, replace it with a new one.

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Efficient desoldering depends upon the temperature, and the quality and quantity of

the solder and flux. Perform the following service procedures as dictated by the

conditions of use.

During maintenance, please wear gloves and work carefully.

WARNING:

Since the desoldering iron/gun can reach a very high temperature, please work carefully.

Except when cleaning the nozzle and heating element, always turn the power switch OFF

and disconnect the power plug before performing any maintenance procedure.

MAINTENANCE (Desoldering iron/gun)

Servicing the desoldering tool

1. Inspect and clean the nozzle.

•Plug in the power cord, turn the power

switch “ON”and let the nozzle heat up.

•Clean out the hole of the nozzle with the

nozzle cleaning pin.

If the nozzle cleaning pin does not pass

through the nozzle, use the cleaning drill.

Note: The cleaning pin will not pass through

the nozzle until the solder inside the

nozzle is completely melted.

Verify that the correct cleaning pin is

used for the nozzle. The inside

diameter of the nozzle is stamped on

the side of the nozzle.

•Check the condition of the solder plating,

surface and inside hole of the nozzle.

If it is slightly worn, recoat the tip with fresh

solder.

•If it is worn or corroded, or the inside

diameter seems unusually wide, replace

the nozzle.

Note: The inside hole and the surface of the

nozzle is plated with a special alloy.

Should this alloy become corroded by

high temperature solder, the nozzle

will not be able to maintain the proper

temperature.

•If the cleaning pin and cleaning drill do not

pass through the hole in the nozzle,

replace the nozzle.

The cleaning pin passes

completely through the hole.

Cleaning with the nozzle cleaning pin.

Cleaning with the cleaning drill.

•Before cleaning

•After cleaning

Insert the bit while turning it clockwise.

Pull the drill bit out straight without turning it.

solder plating

Diameter of hole is

widened through erosion.

Note

CAUTION

Please use the proper sized

cleaning pin or cleaning drill

for the nozzle diameter.

If the cleaning drill is forced

into the nozzle, the drill bit

could break or be damaged.

CAUTION

Unfortunately, it is often diffi-

cult to observe this condition,

therefore, if desoldering effi-

ciency goes down and all

other parts appear to be OK,

the nozzle is probably eroded

and should be replaced.

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2. Remove the element cover, nut

and nozzle.

CAUTION:

The heating element is very hot during

operation.

3. Clean out the hole in the

heating element.

Be sure the solder in the hole in the

heating element is completely melted,

then clean the hole with the cleaning pin

provided.

If the cleaning pin cannot pass through the

hole, replace the heating element.

4. Replace the filters.

CAUTION:

The filter pipe is very hot.

For Hakko 807

1. Turn the power switch off.

2. Turn the back holder knob counter-

clockwise and pull out the filter pipe.

3. If there is solder in two-thirds of the spring

filter, replace the filter.

4. If the ceramic paper filter is stiff with flux

and solder, replace the filter.

5. Insert the spring filter into the filter pipe.

6. Insert the ceramic paper filter and put the

back holder into the filter pipe.

7. Insert the filter pipe into the main body and

secure it by turning the back holder knob

clockwise.

For Hakko 817

1. Turn the power switch OFF.

2. When the filter pipe is cool to touch, push

down the release knob at the back of the

gun and remove the filter pipe.

3. If the ceramic paper filter is stiff with flux

and solder, replace the filter.

4. Insert the ceramic paper filter and attach

the spring filter to the front holder.

5. Insert the front holder into the filter pipe.

6. Insert the filter pipe into the main body.

Heating Element

Remove the nut with

the attached spanner.

Nozzle

Element Cover

Nut

Scrape away all oxidation from the hole in the heating

element until the cleaning pin passes cleanly through the

hole.

The cleaning pin passes cleanly through the hole.

Ceramic Paper Filter(L)

Back Holder Filter Pipe

Spring Filter

Filter Holder

Front Holder

Spring filter

Attach the front holder to the filter pipe

so that it does not leak air.

Firmly press the back holder assembly

into the filter pipe in order to property

seat the O-ring against the pipe.

Ceramic Paper

Filter (L)

Ceramic Paper

Filter (L)

Front holder

Filter HolderSpring Filter

Securely insert the spring filter to

the end of the filter holder.

CAUTION :

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MAINTENANCE (Station)

Cleaning the inside of the filter case

1. Replace the ceramic paper

filter (S).

Remove the ceramic paper filter (S) and

inspect it. If it is stiff with flux, replace it.

2. Reassemble the filter case.

CAUTION:

Set the ceramic paper filter (S) in the filter

retainer (station). Using the ceramic paper filter

(L) in the filter retainer may cause to break or

the power to drop.

Filter Retainer

Ceramic Paper

Filter (S)

Remove the filter retainer

and push out the ceramic

paper filter.

Secure the vacuum

outlet cap.

VACUUM

Ceramic Paper

Filter (S)

Apply silicone grease to the O-ring

(S-20) and securely tighten the

vacuum outlet cap to prevent air

leakage.

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Cleaning the pump

1. Disassemble the pump heads.

•Remove the cover screws. (right/left)

•Remove the cover

•Remove the pump head from each side of

the pump.

2. Clean the pump head.

•Remove the valve plate and fixing plate.

•Remove any flux adhering to the plates.

•If the valve plate is bent or stiff, replace it.

•If the exhaust filter is dirty, replace it.

CAUTION:

•If the fixing plate is difficult to remove, apply

hot air to it to warm it up.

Never use excessive force to remove the

plate as it is easy to bend, and a bent plate

will allow air to leak out and reduce solder

vacuuming efficiency.

•Clean the plates only with alcohol or

thinner.

3. Reassemble the pump heads.

Reassemble the valve plate and fixing

plate.

CAUTION:

When assembling the pump, be sure to check

for air leaks.

Clean the pump head

and fixing plate.

Exhaust Filter

Pump Head

Fixing Plate

Valve Plate

Be sure the parts are

aligned correctly.

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PARAMETERS

The HAKKO 703B has the following parameters. Parameter settings can be adjusted.

1. °C or °F temperature display selection.

2. Heater-error temperature-tolerance.

3. Display of room temperature compensation value (test mode)

Once parameter-input mode has been entered, set the parameters in order shown below.

After all the parameters have been set, normal operation will be resumed.

Parameter input

mode.

1. Turn off the power switch. Press and hold the and

buttons simultaneously, then turn on the power switch.

2. Continue holding down the and buttons until the

display shows C (for Centigrade) or F (for Fahrenheit).

3. When the display shows C or F, the station is in

parameter-input mode.

1. Centigrade or

Fahrenheit

temperature display.

Enter parameter-input mode. Pressing the and

buttons will cause C and F to be displayed alternately.

Press to select either C or F.

After selecting C or F for the temperature display, the

heater error temperature will be displayed with the 100’s

digit flashing.

2. Heater error

temperature-

tolerance.

Refer to P.18, “Heater Error”. Set the heater-error

temperature-tolerance in the same manner as described

in P.8 step 3. Be sure to use a value in the allowable

range.

Range of allowable heater-error temperatures

For C: 30 - 150°C For F: 60 - 300°F

If a temperature value outside of this range is selected, the

display will return to flashing the 100’s place. If this happens,

reenter a correct temperature value.

After setting the heater-error temperature-tolerance, the

display will show the room temperature compensation

value (test mode).

3. Room temperature

compensation

value. (Test Mode)

The display will not blink and the heater will not receive

power.

The room temperature compensation value is the

measured temperature of the soldering iron tip.This function

will be used later to calibrate the tip temperature. (See

“Calibration of Iron Temperature”on P.16)

No inputs are made here. Press to complete

parameter input. The soldering temperature setting will

be displayed for 2 seconds, after which power will be

supplied to the heater and normal temperature control

will begin.

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CALIBRATION OF IRON TEMPERATURE

Soldering irons should be recalibrated after changing the iron, replacing the heating element or

replacing the tip. There are two methods for recalibrating the iron temperature:

A: Calibrating with a tip thermometer.

B: Calibrating with a room thermometer.

Note: HAKKO recommends method 1 for greater accuracy.

The desoldering iron/gun should be recalibrated after changing the iron, the heating element or

the nozzle. (Refer to method A.)

CAUTION:

Never set the nozzle temperature above the maximum temperature. It will cause problems.

A.Calibrating with a tip

thermometer.

1. Turn the 703B ON, select the iron desired, and set the

temperature to 400°C (750°F).

2. Wait until the temperature stabilizes.

3. When the temperature stabilizes, use a regular or small

cross point screwdriver to adjust the screw (marked CAL

for A.IRON or B.IRON on the side of the station) until the

tip thermometer indicates a temperature of 400°C

(750°F). Turn the screw clockwise to increase the

temperature and counterclockwise to reduce the

temperature.

∗We recommend the HAKKO 191/192 thermometer for

measuring the tip temperature.

B.Calibrating with a

room thermometer.

(Test Mode)

1. Allow the HAKKO 703B to cool to room temperature for

one hour.

2. Press and hold down the and buttons

simultaneously and turn the power switch on. (Refer to P.15)

CAUTION:

Should you make a mistake during steps 2 and 3, the station

will start up normally and the heating element will begin

warming up. Should this happen, turn the station off and wait

until it has returned to room temperature.

3. Press the button twice. The display will show the room

temperature compensation value (test mode). This value is

the measured temperature of the soldering tip.

4. Use a regular or small cross point screwdriver to adjust

the screw (marked CAL for A.IRON or B.IRON on the

side of the station) until the display indicates the room

temperature plus or minus the value.

Example: To calibrate the 900M-T-LB at the room

temperature of 22°C (70°F), adjust the CAL

potentiometer until the digital display reads 20 (66).

22 (70) –2 (4) = 20 (66)

Room temp. Compensation value Digital display

5. Press the button to complete the calibration. After the

button is pressed, power will supplied to the heater

and normal temperature control will begin.

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ERROR MESSAGES

Various error messages will be displayed when there is a problem with the

HAKKO 703B unit. If the following message is displayed, refer to “TROUBLE

SHOOTING GUIDE”.

System Error After the power has been turned on, the

system checks the memory and the

programs.

If an abnormality is found, will be

displayed, and all operations will be stopped.

Sensor Error If there is a possibility of a failure in the

sensor or anywhere in the sensor circuit,

will be displayed and power to the

soldering iron will be cut off.

Heater Error

(Flashing of the temperature display)

If power is being sent to a soldering iron and the

tip temperature goes below the heater-error

temperature-tolerance setting, the temperature

display will flash.This indicates the possibility of

a heater malfunction.

For example, assume the temperature setting

is 400°C (750°F) and the heater-error

temperature-tolerance is 50°C (100°F). If, even

though the heater is receiving power, the

temperature of the soldering iron goes below

350°C (650°F) the display will begin to flash

indicating a possible heater malfunction.

EXAMPLE:

400 - 50°C = 350°C (750 - 100°F = 650°F) →

The display will begin to flash.

NOTE:

If the temperature begins to rise again, the

display will stop flashing, even if the displayed

temperature is below 350°C (650°F).

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BEFORE SERVICING ......

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 or its

service agent or similarly qualified person in order to avoid hazard.

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REPLACEMENT PARTS (Soldering iron)

900M-T-0.8D

900M-T-1.2D

900M-T-1.2LD

900M-T-1.6D

900M-T-2.4D

900M-T-3.2D

900M-T-B

900M-T-LB

900M-T-1C

900M-T-1CF*

900M-T-2C

900M-T-2CF*

900M-T-3CF*

900M-T-4CF*

900M-T-3C

45°

900M-T-4C

900M-T-K

900M-T-R

900M-T-RT

900M-T-I

900M-T-H

900M-T-1.8H

900M-T-S4

900M-T-0.5C

900M-T-0.8C

900M-T-1.5CF*

900M-T-SB

900M-T-SI

900M-T-S9

900M-T-S3

900M-T-S6

900M-T-S7

900M-T-2LD

900M-T-3.2LD

R0.2

0.5

17

ø1.2

0.7

25

5

17

ø4

45°

ø3.2

17

6.5

ø2.4

17

5

ø3

45°

17

ø2

19

1

1.8

14

25°

7.5

25°

R0.2

13

1.2

7.5

3.5

17

ø2

14

R0.2

ø1.5

15

60°

1

ø3.2

12.5

25

60°

1

ø2

8

ø1.18

25

17

0.5

25

ø1.6

3

17

ø1.2

0.7

17

3

ø1

15

60°

0.6

ø0.8

3

17

R0.2

R0.5

ø0.5

15

45°

ø5.1

3.2

ø4.2

2

17

2

17

2

ø0.8

45°

17

2

15

45°

ø5

ø2

15

R0.125

9

60°

ø1.27

1

ø5.2

17

19

16

6

0.4

ø1.2

(0.67)

(0.024)

(0.031)

(0.12)

(0.67)

(0.063)

(0.028)

(0.12)

(0.67)

(0.02)

(0.67)

(0.2)

(0.094)

(0.02)

(0.26)

(0.67)

(0.13)

(0.02)

(0.2)

(0.98)

(0.047)

(0.028)

(0.67)

(0.02)

(0.98)

(0.008)

(0.59)

(0.039)

(0.079)

(0.67)

(0.12)

(0.67)

(0.16)

(0.67)

(0.59)

(0.08)

(0.2)

(0.67)

(0.1)

(0.2)

(0.079)

(0.67)

(0.079)

(0.2)

(0.67)

(0.008)

(0.75)

(0.3)

(0.047)

(0.14)

(0.55)

(0.3)

(0.039)

(0.071)

(0.59)

(0.079)

(0.005)

(0.59)

(0.02)

(0.67)

(0.031)

(0.59)

(0.059)

(0.55)

(0.079)

(0.008)

(0.51)

(0.63)

(0.016)

(0.047)

(0.24)

(0.75)

(0.35)

(0.2)

(0.039)

(0.67)

(0.05)

(0.67)

(0.046)

(0.98)

(0.31)

(0.079)

(0.039)

(0.98)

(0.49)

(0.13)

(0.039)

(0.047)

900M-T-0.2RB

R0.2

4

11

30°

(0.43)

(0.16)

(0.079)

907

* These tips are tinned on the soldering.

CAUTION: Use only genuine replacement tips for HAKKO 907 .

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Hakko Electronics 703B User manual

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