21
Securely insert the power cord into the power supply with grounding socket.
Check 2: Is the fuse blown？
Determine why the fuse blew and eliminate the cause, then replace the fuse.
z
Is the inside of the de-soldering gun short-circuited?
z
Is the grounding wire touching the heating element?
z
Is the heating element lead twisted and short-circuited?
4. Pump cannot operate.
Check 1: Is the cord assembly properly connected？
Reconnect the cord assembly.
5. Solder cannot be absorbed.
Check 1: Is the spring filter full of solder？
Replace it with a new one.
Check 2: Is the ceramic filter hardened？
Replace it with a new one.
Check 3: Is there a vacuum leak？
Check the connections and replace any worn parts.
Check 4: Is the nozzle or hole in the heating element clogged？
Clean it.
6. The nozzle cannot heat up.
Check 1: Is the de-soldering gun cord assembly properly connected？
Reconnect it.
Check 2: Is the heating element damaged？
Replace it. Measure the heating element whether is broken or not as following.
A
Between pins 4 & 5 (Heating element)
Under 4
Ω
(Normal)
B
Between pins 1 & 2 (Sensor)
Under 10
Ω
(Normal)
C
Between pins 3&Nozzle
Under 2
Ω
7. Heater error,
“
H-E
”
is displayed.
Check 1: Is the de-soldering gun cord broken？
Replace it.
Check 2: Is the heating element broken？
Replace the heating element.
Check 3: Is there a nozzle on the gun？
Assemble a nozzle on the gun.
8. The temperature cannot be set.
Check 1: Is it locked by password？
Enter into the setting password.
9.2.4 Replacing the Heating Element
WARING:
unplug the power cord before starting this procedure.
The resistance value of a working heating element is below 4
Ω
. If the value is outside the range, replace the
1
6
3
5
4
2
Summary of Contents for QUICK 713
Page 26: ...25 10 3 NK SMD Rework Nozzle ...
