TimeLine Micro Lynx System Unit User manual

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PROM Installation Guide
Micro Lynx System Unit (SU)
qOptional TIMELINE VISTA, INC.
1755 LA COSTA MEADOWS DRIVE, SUITE B
qRecommended SAN MARCOS, CA 92069
TEL. [phone]
q3Mandatory (FAX [phone])
[email protected]
System Unit PROM Installation
DATE: 06/12/92
MODEL: Micro Lynx
REVISION: All
SERIAL NO: All
SOFTWARE: Machine Control PROM U51
U47
Control PROM U4
DESCRIPTION:
There are three PROMs in the System Unit. A software upgrade may require replacement of either the
machine or control PROMs. Replace only the PROMs that were shipped to you.
Look at the PROM(s) in the shipping container. The Software Version number is listed on the PROM
label; the number is preceded by MC or CP. Micro Lynx uses two MC (Machine Control) and one CP
(Control Processor) PROM. Both MC PROMs must be replaced at the same time, do not replace only one!
Record the serial numbers and software version in the front of your Micro Lynx Manual, they are
required to receive assistance from Customer Service.
REQUIRED TOOLS:
Static safe workstation Grounding wrist strap
IC Extractor/Insertor Phillips screwdriver
or small screwdriver
PROCEDURE:
1. Turn off the power and disconnect all
power cables.
2. Place the Micro Lynx System Unit on a
static safe workstation. Ground yourself and the workstation anti-static mat.
3. Remove the six phillips screws securing
the top cover to the chassis. Turn the
System Unit so that the front panel faces you and remove the top cover.

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Figure 1. Open the Top Cover
PROM Installation Guide
4. Locate and replace the appropriate PROMs. Remember to align pin 1 on the PROM with pin 1 in
the socket. All PROMs have a small cutout at one end which indicates the location of pin 1. The
printed circuit board also has a cutout mark at one end of each IC to indicate orientation.
MC U51 and U47
CP U4
Warning
Use an IC inserter to remove and replace the PROMs. If one is not available, use the small flat blade
screwdriver. Insert the screwdriver precisely as shown in Detail B below; twist slightly and gently lift
up the PROM. Inserting the screwdriver incorrectly will damage surrounding components and affect
operation of the Micro Lynx.

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Figure 2. System Unit PROM Locations
5. Replace the cover on the System Unit. Insert and tighten the 6 phillips screws. Reconnect the cables and
turn on the power. The System Unit will sense the new software and boot correctly. To verify that the
upgraded software is operating, pressSYS on the Keyboard Unit, the new software version numbers
will be displayed.