Tandberg Data SDLT 600 - Manual (Page 76)

Power-On Self-Test SDLT 600 Product Manual
5-2 March 2004 81-81184-02 REV A01
During this time, if a host tries to negotiate Synchronous or Wide transfers, the SDLT 600 tape drive
system negotiates to Asynchronous or Narrow. It may take longer than the duration of POST for the
tape drive to become ready.
Table 5-1 provides the sequence of operation to expect when power is turned on. See Figure 5-1 to
help familiarize yourself with the LEDs on the front panel.
Figure 5-1. SDLT 600 Tape Drive Front Panel LEDs
Table 5-1. SDLT 600 Tape Drive LED Lighting Pattern During Power-On Self-Test (POST)
Stage What You Observe
1 (Power On) All LEDs illuminate for approximately one second.
2 The LEDs flash on, then off in a progressing pattern from left to right.
Stages 1 and 2 generally complete within approximately five seconds.
3 The right LEDs remain off, the left LED illuminates steadily, and the
middle LED flashes until POST completes. This stage typically lasts for
5 to 10 seconds.
4 When POST is complete, the middle LED stops flashing and remains
illuminated; the left LED turns off, and right LED remains off.
POST Failure If POST fails, the middle and right LEDs illuminate steadily and the left
LED flashes.
Note: If a data cartridge is in place when power is turned on, all stages remain the same
except stage 3. It may take a considerably longer time for stage 3 to complete due
to tape rewind and searching operations that occur during that stage.
Green/Orange LED
Green LED
Yellow LED
(Cleaning Required)
(Drive Density)
(Drive Status)