
Table 1-4 shows specific combinations of LEDs that may occur during
operation.
CTS State
POST
(1st
part)
POST
(to com-
pletion)
Failed
POST
Ready–
no tape
loaded
Ready–
tape
loaded
Normal
tape
motion
High-
speed
tape
motion
SCSI
bus
reset
Error
Time to
clean
Cleaning
tape
loaded
Top
LED
(errors)
●●
❊
fast
❍❍❍❍●
❊
slow
❊
fast
❍
Middle
LED
(SCSI)
a
●
(green)
❊
irregular
❊
irregular
❊
irregular
❊
irregular
❊
irregular
❊
irregular
❊
irregular
❊
irregular
❊
irregular
❊
irregular
Bottom
LED
(motion)
●❍
b
❍❍●
❊
slow
❊
fast
●❍
❊
fast
❊
slow
a
Green: The tape is in 8200 or 8500 format.
Amber: The tape is in 8200c or 8500c format.
b
If a tape is loaded, the bottom LED will flash slow and then fast during the second part of the power-on self-test.
Key for Table 1-4
●❍❊
The LED is on. The LED is off. The LED is flashing:
❊ slow = 1 flash/second (0.94 Hz)
❊ fast = 4 flashes/second (3.76 Hz)
❊ irregular = Rate of flash varies with SCSI bus activity. If the
CTS is not connected to the bus, the LED will be off.
Note: You may occasionally observe LED combinations and
sequences not described in Table 1-4. These other
combinations represent special or unusual conditions that are
beyond the scope of this table. (For example, a fairly complex
LED sequence occurs when you load new microcode from
tape.)
Table 1-4 CTS states indicated by the LEDs
1-16
EXB-8205 and EXB-8505
(Standard and XL)
510503
1 CTS Features
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