PCServer 720: EP 1003??
adam mcadam
ref: my earlier posts, the PCServer 720 system I'm rebuilding now has the
8 identical simms and two CPU complexes.
The problem now is that the amber lights remain lit on the CBUS card, the
SIMMs card and the first CPU complex, and the LCD reports EP 1003, which
is an error that I cannot find mention of so far in the manuals or online.
If anyone has any ideas on how to get this machine at least up to an
on-screen POST, please please let me know.
TIA
Ad.
--
Calm down -- it's only ones and zeroes.
Brad Boot
Here's a sight that has allot of information on all PS/2s including the 720.
http://servicepac.de.ibm.com/eprmhtml/
Now to get the beast to boot. I have two of these guys and they are kewl but
one was a nightmare when I received it. Wouldn't boot to a ref disk, all kinds
of LCD error codes, etc. A couple of things to check real easy is that the
memory card is above the Corollary Bus PCI card like the diagram on the inside
of the access cover. Another thing to check is the J24 jumper located to
between the C-Bus card and the memory card on the right side of the machine
(to the rear). Here's the discrepancy:
SUBJECT: INTERMITTENT HANGS - SERVER PC720(8642)
SYMPTOM:
Intermittent hangs / traps on Server 720 / 8642
PROBLEM ISOLATION AIDS:
Check settings of jumper J24 on system and manufacturing part number of PCI
bridge card
FIX:
Bridge card 07H1107 (fru Part Number 71G0694) requires J24 on the system board
to be open circuit
Bridge card 75H7667 (fru Part Number 71G0694) requires J24 pins 1+2 to be
Short circuit
( ie. the 2 pins of J24 nearest the back of the machine.)
REASON :
J24 pins 1+2 S/C sets the PCI bus speed to 33MHz. ( new Bridge card )
J24 pins o/c sets the PCI bus speed to 25MHz. ( old Bridge card )
You can tell the 33Mhz card from the 25 Mhz card by a notch in the front
(towards you looking at the card installed) 33Mhz card. The 25Mhz C-bus card
is even all the way across the front.
Another thing to check:
Subject: SERVER 720 HANGS at CP 69 after PLANAR Replacement
Updated PC Server RETAIN TIP:
Record number: H136842
Device: D/T8642
Model: M
Hit count: UHC00118
Success count: USC0000
Publication code: PC50
Tip key:
Date created: O97/03/14
Date last altered: A98/06/17
Owning B.U.: USA
Abstract: SERVER 720 HANGS at CP 69 after PLANAR Replacement
SYMPTOM:
The PC Server 720 (8642) hangs at Check Point 69 (CP 69) during POST or
MicroChannel adapters are not recognized by the system after the system board
FRU P/N
06H1810 has been replaced.
PROBLEM ISOLATION AIDS:
The Server 720 has MicroChannel adapter(s) such as the RAID adapter FRU
P/N 06H3059
FIX:
If replacing a system board on a Server 720 with MicroChannel adapter(s),
inspect the system board first: Locate the small chip at U74 and look for a
tiny blue dot the size
of a period (.). If this chip has a blue dot, the system board is good and can
be installed.
In the unlikely event that the tiny blue dot is missing and the Server 720
does not boot properly, order system board FRU P/N 01K7236.
.-------------------------------------------------------.
| ========================== |
| ==================== |
| ========================== |
| ==================== |
| _ ========================== |
-------- |_| U74 ==================== |
| ========================== |
| ==================== |
| ============================== |
| ==================== |
| ========================== |
| ==================== |
| ========================== |
| ==================== |
| |
| ============================== ==================== |
| ============================== |
| |
| ============================== |
| |
| ========================== |
----------------------------------------------------------------
Another thing to check:
Server 720 Memory configurator
Server 720 Memory configurator
The PC Server 720 Planar supports up to 2 memory cards each capable of
supporting 64 MB to 512 MB using 8, 16 or 32 MB ECC SIMMS (60 ns). The maximum
system
merory is 1 GB.
The memory SIMMs MUST be installed by 8
The largest ECC SIMMs used have to be in the lowest bank.
Do not use different (MB) memory SIMMs on a Memory Card
The system board used in the PC Server 720 is very flexible in the way that
memory can be configured. The table below shows just some ways in which
different memory
sizes may be achieved.
Memory Card 1 Memory Card 2
Bank A Bank B Bank A Bank B
-----------------------------------------------------------------
64 MB 8 x 8 MB empty empty empty
-----------------------------------------------------------------
128 MB 8 x 8 MB 8 x 8 MB empty empty
-----------------------------------------------------------------
128 MB 8 x 16 MB empty empty empty
-----------------------------------------------------------------
192 MB 8 x 8 MB 8 x 8 MB 8 x 8 MB empty
-----------------------------------------------------------------
256 MB 8 x 8 MB 8 x 8 MB 8 x 8 MB 8 x 8 MB
-----------------------------------------------------------------
256 MB 8 x 16 MB 8 x 16 MB empty empty
-----------------------------------------------------------------
256 MB 8 x 32 MB empty empty empty
-----------------------------------------------------------------
512 MB 8 x 16 MB 8 x 16 MB 8 x 16 MB 8 x 16 MB
-----------------------------------------------------------------
512 MB 8 x 32 MB 8 x 32 MB empty empty
-----------------------------------------------------------------
1 GB 8 x 32 MB 8 x 32 MB 8 x 32 MB 8 x 32 MB
-----------------------------------------------------------------
Yet another thing to check:
Check the C-bus card where the heat protector (hard rubber like cover) is held
to the card with four, IIRC, metal clips. One of the clips could be shorting a
component on the card. The fix is to gently pry the clip(s) away from the card
edge so they're not contacting any board edge components. The one I had that
wouldn;t boot ended up having two problems - a dead C-Bus card and dead SRAM
Dallas batteries. Will the machine boot to a ref disk at all? What cards are
installed - i.e. Cheetah, ServeRAID, etc?
Try these inspections and get back with us.
Brad Boot
Al Savage
wrote:
> The problem now is that the amber lights remain lit on the CBUS card, the
> SIMMs card and the first CPU complex, and the LCD reports EP 1003, which
> is an error that I cannot find mention of so far in the manuals or online.
[ I posted all of this several days ago ]
==================================
PC Server 720 - Error code EP:1043
Applicable Countries
Worldwide
Service Hints & Tips
Symptom
A Server 720 halts with error code EP:1043 (EP:104X). This
code can not be found in the Server 720 HMM (Hardware
Maintenance Manual) supplement, S30H-2352-00, dated
October 1995.
Problem Isolation Guidance
None
Fix
Error code EP:1043 is not listed in the HMM. This error code
reflects a memory adapter failure. First reseat the memory
adapter, as it could be loose or not fully seated in the connector
on the system board. If the error persists, the memory adapter is
the most likey failing FRU. (FRU P/N71G0696). The HMM will
reflect this additional error code in the next update.
==================================
Hardware Maintenance Manual
for PC Server 720
ftp://ftp.pc.ibm.com/pub/pccbbs/pc_servers/s30h2501.pdf
(6mb, 557 pgs)
It *does* list the CP code 154:
==========================================
CP Code FRU
154 Bridge DMA Initialization
1. Bridge Card
2. System Board
3. Default Processor Card
4. Memory Card
==========================================
Ah, here's the info I was looking for, pg 379:
==========================================
Test Error Indication (EP):
In some cases, the early POST code will detect errors during the running
of the test cases and display corresponding test errors to the
information panel. The information is displayed in the following format:
EP: 1XXS
1XX Error values as described below.
S Slot number of the card/board issuing the error.
EP Code FRU
1043 (104X) Memory Error
(First reseat the memory adapter.) 1. Memory Adapter
106s Processor Card Error 1. Processor Card
==========================================
After a half-hour, this is probably the best I can do without the EXACT
model number. The HMM referenced above should cover the 8640/8642
models. I had no hits searching that HMM for "1003", and the only EP
section I found I quoted above.
Are you *certain* it's "EP 1003"?
Regards,
Al S.