Mother Board 3

72039G05 (MB3) Revision History
     
Revision ECO # DESCRIPTION
     
A 30182  
     
B 30204 Correct RESET PIN for U5; PLD changed
     
C 22248 Added BOOT prom to BOM and deleted raw part
     
D 30007
     
E 30041 On power up node would hang; display 88 and turn on service light
     
F 22265 Change clock generators. No known field errors. (Cost saving changes)
     
G 22278 Spurious data out of CTP port during power up.
     
H 30392 IDMA--ISA contention caused node to hang. Add T1/E1 2M application
     
J 30502 Enable used of many ISDN cards in the same node; corrected bus
    errors and watchdog time-outs and failure to boot up online.
     
K 30522 Local DRAM errors at low temp.; changed faster PLD
     
L 30579 Node runs OK but garbage characters printed on the CTP.
     
M 30745 Local DRAM errors at high temp.(CLKEN signal fix)
     
N 30923 DCC errors due to a bus arbitration and Global DRAM problems
    causes bizarre crashes.
     
P 31072 New artwork (Rev. B) to eliminate reworks.
     
R 31137 No fields errors. For manufacturability.
     
S 31138 When 7 SDB2 and ISDN are in the same node, the MB can't
    communicate with the ISDN card.
     
T 32200 Node failed the external Ethernet loopback test.
     
U 33230 Fixed problem with newer PLD chip that resulted in diag. Failure of the
    option cards.
     
V 33918 Removed Boot prom socket.
     
W 34028 Fixed background checksum failure if a DCE is installed.
     
Y 34737 Replace the Altera PLD for cost reduction.

Last Updated on 30/8/00
By Wayne Dixon
Email: LWD004@vanguardms.com