MEDTESTER 5000C FIELD UPGRADE INSTALLATION INSTRUCTIONS
7
Install Integrated Circuits
1. For a medTester 5000C Firmware Upgrade, remove IC U20 and U21
on the digital PCB, and install the new U20 and U21 (40-pin devices
with labels).
2. For Modules 4 (Expanded Memory) and 7 (medCheck), install all the
RAM ICs (32-pin devices without labels) that you have received in the
next available positions—U23, U24, U25, U26, U27, in that order.
Test the Installation
1. Fold the two case halves back together temporarily, closing the case.
2. Plug in the instrument, turn on the power:
A. For a Firmware Upgrade an initialization will be performed
automatically.
B. Calibration is not affected by this initialization, so the instrument
remains calibrated.
C. The instrument should display a startup message, then display MAIN
MENU 1
.
D. Test the RAMs: From MAIN MENU 1, press F5 UTIL, then RIGHT
arrow, then F2 DIAG, then F4 MEMORY, then F2 RAM. The indicated
RAM ICs should test GOOD:
• All instruments: U22
• With Module 4 Expanded Memory: U23
• With Module 7 medCheck: U24, U25, U26, and U27
• Press
Esc enough times to return to MAIN MENU 1.
Reassembly
Reassemble the instrument now.
1. You should have temporarily closed the case. With the unit unplugged,
now open the case again by unfolding the top case and laying it down.
2. Attach the shield to the digital PCB with the six (6) screws. These are
the steel screws without lockwashers.
3. Make sure all cables are still in place. If they have slipped off,
reconnect them firmly.
