FUNCTIONING OF EQUIPMENT
Power Supply (Alarm and Status Modules).
This chapter contains a functional block diagram circuit
The Alarm and Status Modules operate on + 20 V dc
which is supplied directly to the device supply (Vdd)
description of the Alarm and Status Modules. Refer to
regulator and through a filter to the lamp voltage
regulator. The Vdd regulator provides +6.2 V dc for
the applicable block diagrams shown in figures 6-1 and
operation of the logic circuits whereas the lamp voltage
regulator provides 5 V dc for operation of the alarm
6-2 and schematics shown in figures 68 and FO-1 when
lamps. The power supply circuits are protected by fuse
making an analysis of these circuits.