IBM Asynchronous Color Terminals WS525 - Manual (Page 35)

Maintenance and Troubleshooting
A.2 Troubleshooting
Table A–1 (Cont.) Identifying and Correcting Problems
Symptom Possible Cause Suggested Solution
Green color is
missing.
Green signal
cable has a loose
connection or is not
connected to the
terminal.
Check the cable connections.
A.3 Installing the ROM Cartridge
Introduction
This terminal can accommodate an optional ROM cartridge in its
system box. This ROM cartridge will completely supersede the
factory-installed software within the terminal for new software
versions or special applications.
When an option ROM is not used, the ROM cartridge holder is empty
with a cover over it.
Installing and Removing the ROM Cartridge
To install a ROM cartridge:
CAUTION
To prevent damage to the terminal, set the power switch to the
off position before installing or removing the ROM cartridge.
1. Set the power switch to the off position.
2. Slide the ROM cover on the system box to uncover the ROM
cartridge handle.
3. Pull the ROM cartridge handle out slightly to grasp it firmly;
then, pull it straight out.
4. Plug the ROM cartridge into the system box and slide the cover
over it.
Maintenance and Troubleshooting A–3