Tandberg Data manual 1. SDLT 600 Tape Drive Front Panel LEDs

Power-On Self-Test SDLT 600 Product Manual

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 5-1provides the sequence of operation to expect when power is turned on. See Figure 5-1to help familiarize yourself with the LEDs on the front panel.

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

(Drive Density)

Green LED

(Drive Status)

Yellow LED

(Cleaning Required)

Figure 5-1.SDLT 600 Tape Drive Front Panel LEDs

5-2 March 2004 81-81184-02 REV A01