GE M
EDICAL
S
YSTEMS
D
IRECTION
2317229, R
EVISION
3
LOGIQ™ 180 B
ASIC
S
ERVICE
M
ANUAL
Chapter 4 Functional Checks
4 - 9
Section 4-4
Diagnostics
The LOGIQ™ 180 System service diagnostics comprises of:
1.) Self test or power on diagnostics
2.) Service diagnostic tools
The self test or power on diagnostics are run every time the system is booted. The service diagnostic
tools include test procedures for testing the system at PCB level as well as block level. The diagnostic
tools provides a pop-up menu to enable selection of various tests to test various blocks on the system.
4-4-1
Power On Diagnostics
The power on diagnostics or self tests are run every time the system is booted. This self tests include
testing the validity of the system software through EPROM checksum test and testing the system RAM.
It checks whether the keyboard and the trackball are properly interfaced to the system. It also initiates
the self test of analog subsystem. The two LED's and the beeper are used to indicate error conditions.
4-4-2
Service Diagnostics
For More Details on Service Diagnostic refer Chapter 7.
