IBM 6400

220
Chapter 7 Section I: Replacement Procedures
Figure 35. Memory and Security Modules
2
1
3
Bank 0
Bank 1
Bank 0
Bank 1
80-pin SIMM
J11 = Bank 0 (must always
be filled)
J10 = Bank 1
Reserved for upgrades
If 1 Flash SIMM, use Bank 0
If 2 Flash SIMMs, use both
banks but put pre-programmed
SIMMs in J11
72-pin SIMM
J16 = Bank 0 (must always
be filled)
J15 = Bank 1
Reserved for upgrades
If 1 DRAM SIMM, use Bank 0
If 2 DRAM SIMMs, use both
banks (It does not matter which
SIMM goes into which bank
IMPORTANT:
J11 and J16 must always be filled, no matter what
combination of SIMMs is used. The CMX
board does not support EDO RAM.
CMX Controller Board
Security PAL*
Notched End
DRAM:Flash:
Datastream ASCII
ASCII
IGP
Code V
CTA
CTA
IGP
Code V
IPDS
CTA
IPDS
CTA
IGP
Code V
LQ-1600K
(Hanzi)
Flash
Memory
8 MB 8 MB 8 MB 8 MB 8 MB 8 MB 4 MB
DRAM 8 MB 8 MB 8 MB 8 MB 8 MB 8 MB 8 MB
CT Installed No No Yes Yes Yes Yes No
Security PAL
Vendor P/N
154143-002
(14H5509)
154143-001
(14H5490)
154143-002
(14H5509)
154143-001
(14H5490)
154143-002
(14H5509)
154143-001
(14H5490)
154143-005
(38L0821)
Notch
Latch
Latch
Blank SIMMs:
4 MB Flash - 24H9009
4 MB DRAM - 14H5508
8 MB DRAM - 24H9010
* Security Module, Base: 14H5509
Security Module, Graphics: 14H5490
CAUTION: <5> Do not remove or replace
the NVRAM. The NVRAM contains a
lithium battery that can explode if it is
replaced incorrectly. NVRAM is replaced
only at the factory.