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Blease Test Procedure
Title: B.A.V. POWER SUPPLY PCB
DocumentNo:129TP076
Sheet 5 of 5
5.11 Mains Operation
Toggle the following three jig switches:
ALARM SOUND to OFF
⋅
+24V RELAY to NORM
⋅
PCB SUPPLY to AC
After toggling the jig PCB MODE switch to ON, verify all supplies are restored to their
nominal ON LOAD values. The BATT VOLTS may be a little low as charging is initiated due
to previous testing.
Verify on the jig that the PCB SUPPLY lamp is similarly illuminated as the adjacent JIG
SUPPLY lamp.
Note - the supply voltage to the board under test as shown on the UNREG +25V meter is
protected by thermistors. These may trip if the board is allowed to run at full load for
any length of time, particularly when running from AC.
To regain normal operation, turn OFF the jig external DC
and
mains supplies for a
couple of minutes.
5.12 Unregulated Supply
Results for the following are affected by the mains supply voltage which should be at its
nominal value of 240 Vac.
Note the value from the jig UNREG +25V meter.
Toggle the jig PEAK READ switch down and again note the value from the jig UNREG +25V
meter.