Mass Storage Shelf - DEC VAX 4000 300 Manual

1.1.1.1 Mass Storage Shelf

The mass storage shelf extends across the top of the enclosure. The shelf
contains a system control panel (SCP), tape drive, and up to three RF-series
ISEs (tapeless systems can have up to four RF-series ISEs). Each ISE has
its own panel with controls and indicators. Instructions for using ISEs and
the TF85, TK70, or TLZ04 tape drive are in Chapter 3. The SCP is to the
right of the storage devices. Figure 1–6 shows the mass storage shelf.
Figure 1–6: Mass Storage Shelf
ISE 2 ISE 1
System Control Panel (SCP)
The SCP has two indicators: the Over Temperature Warning light and the
DC OK indicator. The red Over Temperature Warning indicator flashes to
indicate that the system's internal temperature is approaching a level that
may cause system components to overheat. In addition to the flashing Over
Temperature Warning light, an audible alarm also provides warning of a
possible over temperature condition. If the components continue to heat,
the system will automatically shut down to prevent components from being
damaged. Chapter 2 provides instruction for turning on the system after a
preventive shutdown due to overheat conditions.
The green DC OK indicator shows that the power supply voltages are within
the correct operating range. If the DC OK indicator is not lit when the
system power is on, refer to the VAX 4000 Troubleshooting and Diagnostics
manual included in the Customer Hardware Information Kit.
Below the indicators are the Halt and Restart buttons. The Halt button is
a two-position button. When you press the button, the system halts. A red
indicator on the Halt button lights when the button is set to the in position.
Before you can enter console commands, press the Halt button again to
1–8 VAX 4000 Model 300 Operation
ISE 0 Tape Drive
Over Temperature
Warning Indicator
DC OK Indicator
Halt Button
Restart Button
MLO-005386