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3–2 Enclosure 4200 Family LVD Disk Enclosures User Guide
Figure 3–1. Single-Bus I/O Module
Module Power Protection
A sensor on the +5 VDC line in the module detects overcurrent conditions. Should this
error occur, the sensor disconnects the voltage from the module and the power LED is O
FF
(see Figure 3–2). This disables the module until one of the following conditions occurs:
■ The overcurrent condition no longer exists.
■ The defective module is replaced.
A disabled module prevents data transfers between the host controller and the drives, and
the host controller and the EMU. An LED on the module displays the module power
status.
Single-Bus Module
This section describes the unique features of the single-bus module. This module (see
Figure 3–1) has one VHDCI connector and two LEDs.
CXO6981A