Service manual

11
A. Control Panel (Microprocessor)
Lifting the control door will reveal the control panel
assembly. Opening the control panel will allow access to
the major components which include the coin acceptors,
computer board, and keypad. The coin acceptor sends
the signal to the computer that a coin has been inserted.
The keypad inputs to the computer what temperature
has been selected. The computer controls the entire
operation of the machine. It accepts inputs and gives
outputs to various parts throughout the machine. The
illustration to the right is a dual coin control panel.
Some models are shipped as dual coin machines,
however, the basic operation remains the same.
B. Control Panel (Non-Microprocessor)
On models without microprocessors, a rotary meter is
used to accept the coins. A rotary meter acknowledges
that a coin has been inserted when the knob has been
turned. This meter is also a timer that will shut off the
dryer at a specific time. The time is determined by a
cam located in the meter. The temperature selector
switch selects the “HI,” “Perm Press”, or “Lo Temp.”
The “Push to Start” relay activates the machine which
starts the drying cycle.
SECTION IV
DESCRIPTION OF PARTS
C. Control Box (Computer Controls)
The computer control box is made up of a fuse(s), 24vac
transformer, and a 30 position terminal block. The
fuse(s) protect the incoming voltage from shorting. The
transformer is used to break down the incoming voltage
to 24vac for the control voltage of the machine. The 30
position terminal block is used to combine the various
common wires throughout the machine for simplicity
and ease of service.