IBM B-Series, Maintenance Information

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Figure 7. Indicator Meaning During Normal Operational Conditions
Busy
1
Clean
2
Maintenance
3
Note Message
Off Off Off — Inactive
Off Off Flashing 1 POST or write/read diagnostic test running
Off Flashing Off 2 Cleaning is required
Off On Off 2 The drive has been disabled until the Head Cleaning
procedure is performed.
On Off Off 3 Busy, tape in motion for write, read or locate
On On Off — ATTENTION DRIVE message is indicated. See
“Attention Drive Messages” on page START-24.
On On On 4
&
5
On momentarily as a lamp test during power-on reset
or during microcode recovery.
Flashing Off Off 3 Unloading, rewinding or cleaning
Flashing Flashing Flashing 5 A hard failure on drive
Off Off On 5 A hard failure on drive
Flashing Flashing On 5 A hard failure on drive
Notes:
1. Maintenance indicator flashing: a normal condition that occurs anytime diagnostics are running. The
diagnostics run:
At power-on time.
After a system reset.
When a Send Diagnostic command is sent from the initiator.
When executed by the service representative.
For more information on LED meanings in CE Mode, see Figure 252 on page PROC-9 and
Figure 254 on page PROC-12.
2. Clean indicator flashing or ON solid: the 3570 determines that the read/write heads need cleaning. If
the Clean indicator is ON solid, the 3570 drive will be disabled until the cleaning operation has been
performed.
Load the cleaning cartridge into the 3570. See “Drive Head Cleaning Procedure” on page PROC-28.
Cleaning is automatic: the Busy indicator is lighted and remains ON until the cleaning cartridge is
unloaded. If the Clean indicator remains ON after cleaning or if the Clean indicator comes ON
frequently, see “Other Obvious Symptom Problems: MAP” on page MAPS-21 for further isolation.
3. Busy indicator flashing or ON solid: a normal condition that indicates that the drive is executing either
a read/write operation or is locating, rewinding, or unloading.
4. Busy, Clean and Maintenance indicators lighted: the LED test that occurs at power-on time, after a
system reset or during microcode recovery.
5. Two major conditions may occur here:
a. All three indicators flash quickly, then the Maintenance LED stays ON solid while the other two
LEDs flash or stay OFF. This indicates a hard failure on the drive and the drive is sending a coded
message of the associated FID. For more information on LED meanings in CE Mode, see
Figure 252 on page PROC-9 and Figure 254 on page PROC-12.
b. All three indicators flash quickly, then all three come ON solid for a time, then the three indicators
flash quickly again. This pattern may repeat as many as four times. This indicates that the
microcode has encountered problems, and is trying to recover. If the microcode fails to recover, it
will then flash the three indicators continuously until the device is powered OFF or reset.
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