SL8500 - HBot Inoperative Due to HBB Card failure - FB102113 Fixes ESD Problem with 9840

Asset ID:	1-72-1013454.1
Update Date:	2011-01-06
Keywords:

Solution Type Problem Resolution Sure

Solution 1013454.1 : SL8500 - HBot Inoperative Due to HBB Card failure - FB102113 Fixes ESD Problem with 9840

Applies to:

Sun StorageTek 9840B Tape Drive
Sun StorageTek 9840 Tape Drive
Sun StorageTek 9840D Tape Drive
Sun StorageTek SL8500 Modular Library System
All Platforms
Checked for relevance on 6-Jan-2011.

Symptoms

Library stops working
Hbot failure
HBB card failures

Changes

{CHANGE}

Cause

Under lower humidity conditions (below 35%) with 9840x drives in an SL8500, an ESD event can occur. CR1602 on the HBB card has suffered failures due to electrostatic discharge resulting from 9840X cartridge static buildup. The discharge, coupled onto the input power lines of the card, exceeds the voltage rating of CR1602 (60 volt part). The system or product is not operational resulting in a critical impact to the customer's business requiring immediate resolution.

Solution

Resolution
FB102113 HBB ESD ROBOT UPGRADE, fixes ESD problem with 9840 drives.

The solution is to replace the present MBRS360 CR1602 with a 1SMC48ATS 48 volt zener transient protection diode. This new part is specifically designed to absorb transients created by electrostatic discharges. The cards remain equivalent.

Part Numbers current for this EC are:

313913804 ROBOT FRU ASSY

313926502 HBZ MODULE FRU ASSY

313960803 MECHANISM FRU ASSY,SL85PT

Additional Information
Sun StorageTek[TM] SL8500 modular library systems with LTO and 9940x only, are not impacted by this EC.

9840, SL8500, ESD, Static, HBB, Field Bill, FB102113, Low humidity, 9840A, 9840B, Electrostatic discharge under lower humidity conditions, 9840C
Previously Published As STKKB58769

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