Chapter 4 Principles of Operation 41
Rectifiers
and Filters
Regulators
Transformer
Rectifiers
and Filters
Regulators
Transformer
LDD
Supply
CPU
Supply
Input Power
Module
OEM Switcher Laser
Figure 18 - Power Supply Block Diagram
4.4.2 CPU Supply
This supply provides digital circuit power for all functions except the laser
driver. It also provides fan power.
4.5 Interlock Operation
The back panel laser input/output connector has interlock connections that
must be connected before the laser output will be enabled. See section 3.3.3
for additional information.
4.5.1 Laser Interlock
Connector pins 1 and 2 form the interlock path. If there is not a connection
between these pins the laser output will not be enabled. When this path is
broken, the laser Interlock Error condition/event will be reported in the laser
Condition Status Register and the Laser Event Status Register.
This interlock is a safety feature for laser protection. It requires that the
connecting cable be secure before the laser output is enabled. A secure
connection significantly reduces the possibility of an intermittent open
circuit to the laser drive current.
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