Document fins/I0598-1
FIN #: I0598-1
SYNOPSIS: Ultra 5 and Ultra 10 systems might not boot if Micron memory and OBP
3.25.2 (or earlier) are installed.
DATE: Aug/09/00
KEYWORDS: Ultra 5 and Ultra 10 systems might not boot if Micron memory and OBP
3.25.2 (or earlier) are installed.
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- Sun Proprietary/Confidential: Internal Use Only -
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FIELD INFORMATION NOTICE
(For Authorized Distribution by SunService)
SYNOPSIS: Ultra 5 and Ultra 10 systems might not boot if Micron
memory and OBP 3.25.2 (or earlier) are installed.
TOP FIN/FCO REPORT: No
PRODUCT_REFERENCE: Memory Module Compatibility
PRODUCT CATEGORY: Desktop / Memory
PRODUCTS AFFECTED:
Mkt_ID Platform Model Description Serial Number
------ -------- ----- ----------- -------------
Systems Affected
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- A21 ALL Ultra 5 -
- A22 ALL Ultra 10 -
X-Options Affected
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- - - - -
PART NUMBERS AFFECTED:
Part Number Description Model
----------- ----------- -----
375-0079-05 (or below) Motherboard, Einstein -
375-0115-02 (or below) Motherboard, Einstein -
375-0009-10 (or below) Motherboard, Darwin -
375-0066-04 (or below) Motherboard, Darwin+ -
370-3796-02 DIMM, 32MB, Micron -
370-3797-02 DIMM, 64MB, Micron -
370-3798-02 DIMM, 128MB, Micron -
370-3799-02 DIMM, 256MB, Micron -
REFERENCES:
PatchId: 
106121
ECO: WO_18078
PROBLEM DESCRIPTION:
Ultra 5 and Ultra 10 motherboards with Open BootPROM (OBP) version 3.25.2
AND with 360MHz, 400MHz, or 440MHz CPU modules are not compatible with
memory from the Sun supplier Micron. The new Micron MTxLDxx72FG-5 series
EDO memory is only compatible with OBP version 3.25.3 (or later). The
Micron memory presents faster access times and shorter propagation delays
through on-board buffers than other qualified memory.
Operating the system without upgrading to OBP version 3.25.3 will result
in two timing violations which may produce symptoms ranging from single-bit
memory errors to system hangs during cold boots. The most likely fault will
be cold boot hangs with a worst case configuration of light memory loading
(32Mx2 or 64Mx2 DIMMs). This newer version of OBP is fully backward
compatible and will work with any Sun supported memory modules.
Micron memory can be identified by viewing the serial number label on the
DIMM itself. Micron DIMMs will have an "M" following the serial
number.
Corrective action was taken on July 6th, 2000 by releasing OBP version
3.25.3 on the Einstein motherboards (p/n's 375-0079-06 and 375-0115-03)
via ECO# WO_18078. Corrective action will be taken to release OBP
version 3.25.3 on the Darwin motherboards (p/n's 375-0009-11 and
375-0066-05) at a later date via the ECO process.
IMPLEMENTATION:
---
| | MANDATORY (Fully Pro-Active)
---
---
| | CONTROLLED PRO-ACTIVE (per Sun Geo Plan)
---
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| X | REACTIVE (As Required)
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CORRECTIVE ACTION:
The following recommendation is provided as a guideline for authorized
Enterprise Services Field Representatives to avoid running into above
compatibility problem between Micorn Dimms and the OBP firmware version
3.25.2 (or lower) in Ultra 5 & 10.
Install PatchId 106121 to download the latest OBP firmware 3.25.3
prior to Micron memory upgrade.
In case of any motherboard swap in a Ultra 5 or 10 system configuration
having Micron memory, the replacement motherboard should be the
375-0079-06 or 375-0115-03 for Einstein as applicable.
Otherwise use following procedure for earlier motherboards:
1) boot system using non-Micron memory and install OBP firmware 3.25.3.
2) Close-down system and install Micron memory module.
3) System now OK, re-boot and ready for use.
COMMENTS:
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Implementation Footnote:
i) In case of MANDATORY FINs, Enterprise Services will attempt to
contact all affected customers to recommend implementation of
the FIN.
ii) For CONTROLLED PROACTIVE FINs, Enterprise Services mission critical
support teams will recommend implementation of the FIN (to their
respective accounts), at the convenience of the customer.
iii) For REACTIVE FINs, Enterprise Services will implement the FIN as the
need arises.
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