Power Supply - Loma IQ2 Service Manual

POWER SUPPLY (Fuses)
WARNINGS
LETHAL HAZARD - ELECTRICAL SUPPLIES. A current of 100 mA passing
through the body for one second can kill. This can occur at voltages as low as
35V ac or 50V dc.
LETHAL HAZARD - The control board and power supply are combined on a
single board therefore this board contains high AC/DC voltages. A grounded
mesh screen cover protects the power supply area of the main control board.
Failure to fit or refit this cover securely may expose the user to a risk of electric
shock or may result in permanent damage to the detector.
ISOLATE - All power to the detector system before commencing work on the
power supply unit.
WARNING - For continued protection against the risk of fire replace only with
the same type and rating of fuse.
Incoming AC Protection Fuse
The power supply forms part of the main control board, it is fitted with a single
protection fuse F1 located in the incoming ac supply circuit see
. In the fuse blows on start up then it may be replaced however should the fuse
6
blow a second time then further replacement is not recommended, as the most
likely cause is an internal power supply fault.
F1 -
If the power supply requires replacement follow the instructions for replacing the
control board.
Reject Relay Protection
The protection fuse locations are shown in
ISOLATE - All power to the detector system before commencing work on the

power supply.

A fuse located in each of the contact sets protects the reject relay.
The reject relay circuit fuses are:
Module 8023
T2A Loma part number 517033
Figure 2
Figure 2 in this section.
on page 6
Maintenance
on page
6-10