aoyue INT 738, Instruction Manual

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18
To test if the heating element of the soldering iron is in working
condition:
Let whole assembly cool down to room temperature and unplug from
electrical sources before continuing the tests below:
1. Follow disassembling the hand piece guide.
2. Do the following tests on the hand piece PCB board:
Resistance value of heating element (RED) 19­23 Ω
Resistance value of sensor (blue) 1.2 — 3 Ω
Note: resistance value of sensor may vary according to ambient
temperature
After testing check results with the following:
●
If the resistance value is not as stated above replace the heating
element.
●
If a 0 Ω or infinite resistances are measured check for shorts or open
circuits.
●
Itermittent readings can also be caused by cold solder double check
solder points if the heating element has recently been replaced.
The heating element can be replaced as follows:
1. Follow the steps in “disassembling the soldering iron”.
2. Unsolder the heating element wires (RED) and the sensor wires (blue ).
3. The old heating element can now be detached from the hand piece
board.
4. Detach the metal protector located at the bottom part of the heating
element.
5. Reattach the metal protector to the bottom part of the new heating
element.
6. Pass the New heating elements wires (RED) thru the holes located on
top of the board.
7. Solder the heating element’s wires and the sensor wires to the board
8. Solder one RED wire of heating element with RED wire on PCB.
CARE and MAINTENANCE
7
CAUTION:
Improper usage can cause serious injury to personnel
and/or extensive damage to equipment and working area. For your
own safety, please observe the following precautions.
●
Microprocessor­driven ESD safe equipment.
●
3­in­1 repairing system combining Hot Air Gun, Soldering Iron,
and Smoke absorber in one sophisticated package.
●
Digital control and display of hot air temperature, soldering
iron temperature and air pressure,.
●
Programmable timer functionality from 6 to 9999 seconds for
automating reworking tasks.
●
User­configurable 1­ to 20­minute idle­to­auto­stand­by mode
(with 5 minutes as default) for additional device protection and
power saving.
●
Built­in auto­cooling process that protects the system and its
components from excessive heat, thereby, prolonging usage
life.
●
Compatibility with various type of air nozzles and soldering iron
tips. (Please refer to MISCELLANEOUS section of this manual.)
FUNCTIONS and FEATURES
●
Check each component after opening the package to make
sure everything is in good condition. If there are any suspected
damage, don’t use the item and report the issue to your
dealer.
●
Turn off power switch and unplug the unit from the mains
power source when moving the equipment from one location
to another.
●
Do not strike or subject the equipment (or its components) to
physical shock. Use carefully to prevent damage on any parts.
●
Make sure the unit is always grounded. Always connect power
to a grounded receptacle.
SAFETY PRECAUTIONS