22
Lead
Seal
BEFORE YOU CALL FOR SERVICE
The 777 has been designed to provide you with years of trouble-free operation. In spite of this,
troubles sometimes happen. Before calling for service assistance you should make some
initial checks to verify that a problem does exist. The following describes several types of
symptoms along with suggested remedies.
Problem Possible Solutions
Screen does not turn on Is AC power cord plugged into wall receptacle?
Check wall receptacle for proper AC power. Try
another electrical appliance in the same receptacle,
does it work? Check the circuit breaker. Has there
been a power failure of any kind?
Incorrect weight displayed Has the instrument been calibrated? Insure that the
scale platform isn't touching an adjacent object.
Check the load cell connector wiring. Have proper
operation procedures been followed?
Indicator will not display Refer to Error and Status Messages section.
weight
CALIBRATION SEAL INSTALLATION
If your Model 777 Programmable Weight Indicator is used in a commercial application, it must
be tested and sealed by your local Weights and Measurements official. The 777 is designed to
accept a lead and wire security seal to prevent unauthorized access to the calibration
adjustments. Refer to Figure No. 13 and the following steps for details on the installation of
the seals.
1. Make certain both calibration sealing screws
are securely tightened before proceeding.
2. Thread the sealing wire through the hole in
the both fillister head screws as shown.
3. Pull the wire tight and install the lead seal.
4. Neither screw can be removed without
damaging the lead seal.
Figure No. 13
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