6. OPERATION
Controls and displays
Controls
UP
DOWN
The front panel of the Hakko 942 soldering
station has the following controls:
• A power on/o
f
f switch.
• Four control buttons:
– Initiates a data entry mode.
– End of sequence signal (terminates a
phase of a data entry mode); when
pressed for less than one second,
displays settings already stored.
– increases the value in the appropriate
display window .
– decreases the value in the appropriate
display window .
1. Turn the power switch ON.
2. Once the temperature is reached, the buzzer
sounds. The heater lamp at the lower right of
the temperature display
starts
blinking.
CAUTION:
Place the iron in the iron holder when not in use.
CAUTION:
The Hakko 942 is preset at 350
°
C. at the factory .
Check the temperature setting by pressing the
button.
The set temperature will be displayed for two seconds.
Displays
The Hakko 942 has a three-digit display
element. Depending upon the selected mode, it
will display:
• Normal mode:
Sensor temperature (tip temperature)
• Data entry:
Selected quantity (see ‘data entry procedures’
for exact characteristics)
• Temperature scale:
°
C or
°
F, depending upon selection
• Error detection:
Refer to ‘ERROR MESSAGES’ section
In addition, a single heater lamp will flash when
the station has reached the desired temperature,
indicating that it is ready for use.
An audible buzzer is provided to alert the
operator when:
1. The station has reached the set tempera-
ture. The buzzer will sound once.
2. The low temperature threshold has been
crossed. This buzzer will shuto
f
f when the
sensed temperature returns to the
acceptable range.
3. A failure has occurred in the sensor or heater
(including the sensor circuit).
The buzzer will
sound
continuousl
y.
4. The auto power shuto
f
f is activated and the
power to the heating element is shuto
f
f, the
buzzer will sound three times.
Heater lamp
UP
DOWN
6
