IBM Aptiva 2134, Hardware Maintenance Service

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Product Description
This manual contains service information for the Service Level A (SL-A)
model of the IBM Aptiva Personal Computer, worldwide.
The Machine Type 2134 contains slots for three adapter cards and bays
for four input/output devices (drives)
The Machine Type 2176 contains slots for seven adapter cards and
bays for six input/output devices (drives).
For FRU parts information, see the Appendix B, “Model/Monitor
Configurations and FRU Part Numbers” on page B-1.
VESA Local Bus Note: The VESA local bus connector generally conforms
to the Video Electronics Standards Association (VESA) VL-Bus Specification
2.0 (32 bit). Local bus adapter cards vary in degree of adherence to this
standard. Therefore, IBM cannot guarantee that all available local bus
option cards will perform according to manufacturer’s claims.
The Type 2134 and 2176 will support Internal or External video, but not both
simultaneously.
Security: Power-on password. See “Power-On Password, CMOS Reset”
on page 1-14.
System Boards: Two system boards are available: Type A-1 and Type
A-2. See “System Board Layout—Type A-1” on page 5-2 and “System
Board Layout—Type A-2” on page 5-5 for system board jumper and
connector locations.
The Type A-1 system board supports the Pentium processor and has the
following features:
P54C socket 7-ZIF connector. You must remove the old processor to
install an upgrade processor.
16 KB internal cache memory, and also supports up to 512 KB external
cache.
Shared frame buffer of 1 MB or 2 MB of video DRAM.
Shared frame buffer utilizes the Unified Memory Architecture which uses
the SIMM memory for both system and video. User selection of 1 MB
or 2 MB for video memory is available from the system setup.
Four, 72-pin system memory module sockets support these memory
modules:
1-6