Hakko Electronics FX-951 Bedienungsanleitung

First Edition: March 31, 2007

[ For FX951-51 -up ]

Service Manual

TABLE OF CONTENTS

Revision History

Chapter 1 Inspection Flow Chart

Chapter 2 Procedure and Method of Repair

2-1 Checking the Exterior

2-2 Checking the Power Supply Line

2-3 Checking the Interior

2-4 Voltage Application Check

2-5 Iron Holder Check

2-6 Inspection after Repair

Chapter 3 Exploded Drawings and Parts List

3-1 Exploded Drawings

3-2 Station Parts List

Chapter 4 Disassembly Procedure

4-1 Opening the Cover

4-2 P.W.B. (for Control/Connector) and Front Panel

4-3 Power Receptacle, Power Switch and Transformer

4-4 Jack

4-5 Iron Holder

Chapter 5 Wiring Diagram

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: Please read the

following sentences and understand them sufficiently before reading the main text.

Cautionary points during use

▲WARNING: Failure to comply with a WARNING may result in serious injury or death.

△CAUTION: Failure to comply with a CAUTION may result in injury to the operator, or

damage to the items involved.

NOTE: Indicates the items which operators are likely to make a mistake in and

should pay attention to.

Revised date: March 9, 2012

Revision History (FX-951/FH-200)

Revision History

Revision Date Information Revised Description Approved by Created by

March 31, 2007 - First edition Hirai Nishii

March 9, 2012 3-2 Station Parts List Change the part number

for Receptacle.

B3076 → 699-031236

Nagase

Nishii

First Edition: March 31, 2007

1 Inspection Flow Chart (FX-951/FH-200)

Chapter 1 Inspection Flow Chart

図16

Iron Holder Check

Section 2-5

Checking the Power Supply Line

Section 2-2-(5)(6)

Checking the Power Supply Line

Section 2-2 (1)-(4)

Checking the Interior

Section 2-3

Voltage Application Check

Section 2-4

Checking the Exterior

Section 2-1

Inspection after Repair

Section 2-6

First Edition: March 31, 2007

2-1 Checking the Exterior (FX-951/FH-200）

Chapter 2 Procedure and Method of Repair

2-1 Checking the Exterior

Check the exterior for the following points.

(1) Are the case R and case L damaged?

If the case R and case L are damaged:

Replace each case.

(2) Do the four operation buttons and card operate smoothly?

If operations are not smooth:

Installation of the P.W.B. (for control/connector) is faulty, or the P.W.B. itself is faulty.

Install the P.W.B. again or replace the P.W.B. (for control/connector).

(3) Does the receptacle allow smooth insertion and removal?

If the receptacle does not allow smooth insertion or removal:

Replace the P.W.B. (for control/connector).

(4) Are the rubber feet of the case R and case L chipped or damaged?

If the rubber feet of the case R and case L are chipped or damaged:

Mount a new rubber feet or replace them.

(5) Take out the fuse from the power receptacle and check that the fuse has not blown.

Check the rating of the fuse with reference to the table on the right.

If the fuse has blown:

Replace the fuse.

If the wrong fuse has been used:

Replace the fuse.

Rubber feet

Card insert slot

Receptacle

Power switch

Operation buttons

Hitch a tool

into this slot

and take out

the fuse.

Voltage Fuse rating

100V-110V 250V-2A

220V-240V 250V-1A

Rating

seal

Power

receptacle

Case R Case L

Jack

First Edition: March 31, 2007

2-2 Checking the Power Supply Line (FX-951/FH-200)

I: Measure across the ground line.

II, III: Touch the plug with the tester probe as shown in

the photo and measure at two positions on the station

side indicated by arrows.

2-2 Checking the Power Supply Line

Check the power supply line for the following points.

(1) Has the sheath on the power cord been dropped or damaged?

If the sheath on the power cord has been dropped or damaged:

Replace the power cord, as it may break eventually.

(2) Measure the resistance values of the power cord

at three points using a tester.(Photo on the right)

NOTE The cord is normal if resistance values are “1Ω

or less”.

If a resistance value is abnormal:

Replace the power cord.

(3) During measurement in step (2) above, twist and bend the power cord at various angles

(including the plug and the station connecting part).

If abnormal resistance values are detected:

The line is broken. Replace the power cord.

(4) Turn on the power switch and measure the resistance value between power receptacle

pins.

NOTE Under normal conditions, the resistance values are as listed in the following table.

(resistance values of the primary side of the transformer)

If the resistance value is different from the value in the table above:

The power switch or the transformer is faulty. Proceed to steps (5) and (6).

If the resistance value is within the above range:

Proceed to section 2-3.

100V 5.6Ωto 6.8Ω

110V 6.0Ωto 7.4Ω

120V 6.5Ω～9.5Ω

220V 30.9Ωto 37.7Ω

230V 30.4Ωto 37.2Ω

240V

Measure the value

between these

power receptacle

pins.

First Edition: March 31, 2007

2-2 Checking the Power Supply Line (FX-951/FH-200)

NOTE Remove the case R before taking the following steps.

(5) Measure a resistance value of the power switch using a tester.

NOTE With the power switch turned on, the switch is normal if a resistance value is “1Ωor

less”.

If a resistance value is abnormal:

Replace the power switch.

(6) Check the resistance on the primary side of the transformer as follows.

Measuring points: Between the soldered parts of the power switch and the power

receptacle on the primary side of the transformer.

If a resistance value is abnormal:

Replace the transformer.

Be sure to turn the

power switch on for

measurement.

100V 5.6Ωto 6.8Ω

110V 6.0Ωto 7.4Ω

120V 6.5Ω～9.5Ω

220V 30.9Ωto 37.7Ω

230V 30.4Ωto 37.2Ω

240V

Measure the resistance between the pin

(1) on the power switch side and the

center pin on the power receptacle side

(as shown by the arrow).

Lead wires from

the primary side

of transformer

First Edition: March 31, 2007

2-3 Checking the Interior (FX-951/FH-200)

2-3 Checking the Interior

Remove the cover and check the internal components for the following points:

(1) Measure the secondary voltage (ACV) of the transformer with the power turned on.

If the measured voltage is different from the values of the above table:

Replace the transformer.

(2) Check the surface of the P.W.B. (for control/connector) visually.

If abnormalities such as cracks and explosions are found on the components:

Replace faulty components.

If portions around the cracked or exploded components are burned:

Replace the whole P.W.B.

(3) Are the transformer and P.W.B. (for control/connector) correctly mounted?

If the parts are not installed correctly:

It may result in a failure. Mount the parts correctly.

(4) Is insulation on the lead wires damaged?

If the insulation is damaged:

Replace the damaged lead wires.

(5) Are there any failures in any of the soldered lead wires?

If a soldered section is faulty:

Repair each section.



CAUTION Wear a wrist strap when following these procedures to prevent damage to the P.W.B.

100V

AC 24.3V to 29.7V

110V

120 V

220V

230V

240V

Measure the voltage

while touching the

tester to this section.

First Edition: March 31, 2007

2-4 Voltage Application Check (FX-951/FH-200)

2-4 Voltage Application Check

Perform a voltage application check.

NOTE Without attaching the iron, perform a check with the following procedures.

(1) Check the soldering iron error.

1. Turn on the power switch.

2. The following indications appear on the display in the order presented, and the

buzzer keeps beeping.

3. Turn off the power switch.

If no indication appears on the display:

The P.W.B. is faulty. Check the P.W.B. using the procedure in step (7).

When an indication appears on the display but it does not function properly:

The P.W.B. is faulty. Check the P.W.B. using the procedure in step (7).

NOTE Connect the iron (without the tip) and check according to the following procedures.

(2) Check the sensor errors.

1. Turn on the power switch.

2. The following indications appear on the display in the order presented, and the

buzzer keeps beeping.

3. Turn off the power switch.

If no indication appears on the display:

The P.W.B. is faulty. Check the P.W.B. using the procedure in step (7).

When an indication appears on the display but it does not function properly:

The P.W.B. is faulty. Check the P.W.B. using the procedure in step (7).

NOTE Connect the iron (without the tip) and check according to the following procedures.

(3) Check the LCD.

1. Insert a card.

2. While holding down the four operation

buttons, turn on the power switch.

3. After the version No. (ex. [001]) is

displayed, the segment of the indicator

[Left] will be lit sequentially.

NOTE The figures to be displayed vary

depending on the version of P.W.B.

8. 8. 8.

C - E

→Flashing

[Left]

3rd digit

[Right]

1st digit

[Center]

2nd digit

[UP]

[DOWN]

[*]

[#]

8. 8. 8.

3 5 0

→S - E

→

(The example shows a

setting at 350◦C.)

Setting temperature Flashing

First Edition: March 31, 2007

2-4 Voltage Application Check (FX-951/FH-200)

4. After [UP] is pressed, the segment of the indicator [Center] will be lit sequentially.

5. After [DOWN] is pressed, the segment of the indicator [Right] will be lit sequentially.

6. After [*] is pressed, [4] will be displayed in the center.

7. After [#] is pressed, figures around [769] will be displayed. (only when setting

temperature (°C))

8. After [#] is pressed, [6] will be displayed in the center.

9. If the card is pulled, [888] will be displayed.

10. Turn off the power switch.

If the unit does not operate correctly:

The P.W.B. is faulty. Check the P.W.B. using the procedure in step (7).

NOTE Connect the iron (with the tip) and perform a voltage application check using

the following steps:

(4) Check the setting temperature.

Setting temperature range

In Centigrade 200°C to 450°C

In Fahrenheit 400°F to 840°F

1. Turn on the power switch with a card detached.

2. The following indications appear on the display in the order presented, and the tip

temperature rises to the setting temperature.

NOTE When the tip temperature reaches the setting temperature, the buzzer will sound

and the heater lamp at the lower right of the panel will start to flash.

3. Insert a card. Indicator [Left] flashes.

4. Press [UP] and [DOWN] to check that the indication changes within the temperature

setting range.

5. Indicator [Center] flashes if you press [*]. Press [UP] and [DOWN] to check that the

indication changes within the temperature setting range.

6. Indicator [Right] flashes if you press [*]. Press [UP] and [DOWN] to check that the

indication changes within the temperature setting range.

7. Press [*] to return to usual operations. The tip temperature rises to the setting

temperature.

8. Measure the tip temperature. (Check that the tip temperature is at the setting

temperature plus or minus 15°C.)

If the unit does not operate correctly:

The P.W.B. is faulty. Check the P.W.B. using the procedure in step (7).

If a tip temperature does not reach a temperature range:

The tip has degenerated or an offset value is incorrect. Replace the tip or correct

an offset value as described in step (5) below and check a tip temperature again.

8. 8. 8.

3 5 0

→3 5 0.

→

(The example shows a setting

at 350°C.)

Setting temperature

Heater lamp

Tip temperature

First Edition: March 31, 2007

2-4 Voltage Application Check (FX-951/FH-200)

(5) Check the offset value.

Input range for the offset value

In Centigrade -50°C to + 50°C

In Fahrenheit -90°F to + 90°F

1. Hold down [#] for one second or longer to make the indicator [Left] flash, indicating

“0” or “-”.

2. Press [UP] and [DOWN] to check that the indication changes alternately between [0]

and [-].

3. Indicator [Center] flashes by pressing [*]. Press [UP] and [DOWN] to check that the

indication changes within the input range.

4. Indicator [Right] flashes by pressing [*]. Press [UP] and [DOWN] to check that the

indication changes within the input range.

5. Press [*] to return to usual operations.

NOTE If an input range of offset values is exceeded, the operation returns to the

beginning.

If the unit does not operate correctly:

The P.W.B. is faulty. Check the P.W.B. using the procedure in step (7).

(6) Check the parameters.

1. Turn off the power switch before inserting the card.

2. If turning on the power switch while pressing the [UP] and [DOWN] at the same time,

the mode will change to the temperature scale setting.

•Check that pressing the [UP] and [DOWN] changes the indication alternately as

follows:

3. Pressing [*] accepts the indicated setting and proceeds to the “Power save setting”.

•Check that pressing [UP] and [DOWN] changes the indication within the input range.

NOTE Check the power-save operation according to the procedure in Section 2-5: "Iron

Holder Check “

1 C

1 F

Temperature scale setting

C Centigrade (°C)

F Fahrenheit (°F)

Power save setting

0 ＯＦＦ

1 to 29 Indicates “SLP” after the set time has elapsed.

30 Indicates “---” after 30 minutes.

2 0

2 1

2 3 0

* The above example

shows the case when it

is set to 1 min.

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