7-2
8. Connect the Power cord to the power recep-
tacle located on the back side of the Head
assembly. Directly below the power receptacle
is a strain relief. Use the strain relief to secure
the power cord to the Cart.
7.4 Access to Circuits & Factory
Settings
1. Remove the two screws located on either side
of the front portion of the top cover.
2. Lift the top cover and lock the cover support
hinge.
3. Verify all internal assembly wiring harnesses
and cables are securely connected. This is best
done by pressing on each connector to ensure
they are seated.
4. Visually inspect the bottom of the inside of
the Head assembly for any loose hardware.
7.5 Default Settings (Factory Settings)
Each time the System 7550™ is powered on, it
will initialize to the default modes. Four (4) of
the default settings can be changed to best fit the
user requirements. To change the system default
settings, locate the micro switch on the back side
of the Display PCB. Viewing the switch with the
cover raised, down is OFF and up is ON. The
positions are numbered from left to right. All
default settings are OFF or down from the factory.
• Pos 1 (Default - Run Mode
)
ON: Test Mode: For system troubleshooting
only
• Pos 2 (Default - Dual Pad
)
ON: Single Pad
• Pos 3 (Default - Last Power Setting
)
ON: All Powers initialize to 0W
• Pos 4 (Default - Pinpoint
)
ON: Spray
• Pos 5 (Default - Simultaneous Activation
)
ON: Non-Simultaneous Activation
• Pos 6 (Default - ABC Argon Monitor
enabled)
ON: ABC Test Mode - Allows ABC testing
without argon gas & inhibits argon flow
alarms.
1. TEST MODE: When this switch is ON, the
internal monitoring is shut off, allowing system
testing without mode inhibits shutting the system
down.
WARNING: DO NOT PLACE UNIT IN
SERVICE WITH TEST MODE ON
.
• The TEST MODE can be enabled anytime
when the Power is on.
• If TEST MODE is selected when the unit is
powered on, an Err 20 is displayed. An Err
20 can only be cleared with a system power
down or reset.
• To Power Up with the TEST MODE enabled,
hold down the
STORE switch on the Front
Panel until an Err 1 is displayed. This allows
the system to be powered on when error mes
-
sages occur during system diagnostics.
2. ABC TEST MODE: When this switch is ON,
the ABC Mode can be tested without argon gas
flow.
WARNING: DO NOT PLACE UNIT IN
SERVICE WITH ABC TEST MODE ON
.
• The ABC Test Mode can be enabled anytime
when the Power is on.
• If ABC TEST MODE is selected when the
unit is Powered on, an Err 20 is displayed.
An Err 20 can only be cleared with a system
power down.
• To Power Up with the ABC TEST MODE
enabled, hold down the
STORE switch on the
Front Panel until an Err 1 is displayed. This
allows the system to be powered on when
error messages occur during system diagnos
-
tics.
7.6 AC Mains Frequency & Voltage
The unit is shipped with the AC Mains Frequency
properly set for the unit destination. However, if
the label on back of the system has the frequency
listed as 50/60 Hz, then it may be necessary to
verify the selected frequency is set correctly.
1. Mains Frequency:
Reference Figure C-1 for this section.
• Remove the cover from the PCB card
cage. The card cage is located at the right
rear of the the unit. Two (2) PCB assem-
blies are within the card cage.
• On the right side of PCB assembly A1 is a
switch. The system is configured for 50
Hz when the switch is to the left and 60
Hz when the switch is to the right.
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