Teledyne T100 Manuale Utente

Several color-coded, light-emitting diodes (LEDs) are located inside the instrument to 
determine if the analyzer’s CPU, I

2

C communications bus and relay board are 

functioning properly. 

DS5, a red LED on the upper portion of the motherboard, just to the right of the CPU 
board, flashes when the CPU is running the main program. After power-up, DS5 should 
flash on and off about once per second. If characters are written to the front panel 
display but DS5 does not flash then the program files have become corrupted. Contact 
Teledyne API’s Technical Support department. 

If DS5 is not flashing 30 - 60 seconds after a restart and no characters have been written 
to the front panel display, the firmware may be corrupted or the CPU may be defective. 
If DS5 is permanently off or permanently on, the CPU board is likely locked up and 
should the analyzer not respond (either with locked-up or dark front panel), then replace 
the CPU. 

 

 

The LEDs on the CPU card (Figure 13-14) are described as follows: 

Power LED 

Red 

normally lit 

IDE LED 

Green 

lit when active (read or write) 

06807C DCN6650