2-4
CHAPTER 2 DIAGNOSIS
SYMPTOM
Balance does not respond
to front panel controls with
ac adapter connected.
PROBABLE CAUSE
PC board switch or actu-
ating fingers on top hous-
ing are defective.
Main PC Board is defec-
tive.
REMEDY
CAUTION: For the following procedure,
disconnect the ac adapter and remove
power and or batteries from the balance to
prevent damage to the Ohmmeter.
Refer to section 3.1.1 or 3.1.2 and open the
balance. Using an Ohmmeter, measure
the resistance between the pins on the
ON/Zero Off switch it should be open, then
press the switch through the top housing
and check that the resistance is zero.
Check each switch in a similiar manner.
If continuity is not present on a particular
switch, replace the affected switch or
actuator.
NOTE: Actuators are part of the top hous-
ing. To replace an actuator, the top hous-
ing must be replaced.
-> Repair Procedures 3.1 or 3.2
If the switches and actuators are OK,
replace the Main PC Board.
-> Repair Procedures 3.1.3 or 3.2.3
TABLE 2-3 BALANCE DOES NOT RESPOND TO FRONT PANEL CONTROLS.
SYMPTOM
Display is not on or partial
characters are displayed.
PROBABLE CAUSE
Display PC Board is de-
fective.
REMEDY
The Display PC Board is replaced as a
whole assembly. Check procedures in
Table 2-1 first and verify that other prob-
lems do not exist.
Replace Display PC Board.
-> Repair Procedures 3.1.2 or 3.2.2
TABLE 2-4 NO DISPLAY OR PARTIAL DISPLAY.
Содержание Adventurer Pro Balances
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