Pressure Systems 9816 Manuale Utente

Pressure Systems, Inc.                                                                              98RK-1 & 9816 User’s Manual© 
 
 

 

Page 137 

 

www.PressureSystems.com 

 

Checking Module LED Power-Up Sequence  

 
(1) 

Power to each module should be verified.  Since module power is supplied by the 98RK-
1 Scanner Interface Rack, make sure that the rack is plugged into the proper type of 
power receptacle. 

 

 

(2) 
 

Turn the rack power supply ON and verify the front panel LED status (for each installed 
scanner) following initial power-up: 
 
● 

PWR LED should remain ON. 

 

If this LED is not on, all other LEDs will likely be off.  Make sure the module is  

 

properly seated (mated) with the rack and the rack is plugged into a proper power 

 

receptacle.  Do not unplug or reseat a module while rack power is ON. 

 
● 

TX LED should remain OFF. 

 

Note that any activity of the TX LED during the power-up sequence is an  

 

indication that the Dynamic IP assignment protocol is enabled.  This will typically  

 

occur following the initial BSY LED cycle and continue until an appropriate server  

 

reply is received. 

 
● 

LNK LED should remain ON. 

 

This LED indicates proper connection to an Ethernet hub or switch.  If this LED is  

 

off, verify that the rack is properly connected to the communications hub or  

 switch. 

 

 
● 

COL LED should remain OFF. 

 
● 

PRG LED should remain OFF. 

 
● 

CAL LED should remain OFF. 

 
● 

BSY  LED should blink 8-16 times at a rate somewhat slower than 1 Hz, delay ON 

 

for approximately 30 seconds and then start to continuously blink at  

 

approximately 100 Hz (rate is dependent on the number of internal averages).  

 

This faster blink rate may simply appear as a dimly-lit LED.  Note that the BSY  

 

LED will not begin its 100 Hz blink rate if the Dynamic IP assignment protocol is 

 

enabled and the module has not received a proper IP address response. 

 
 

Any significant variation from this power-up LED sequence is an indication of a possible rack 
problem or a 9816 microprocessor board (PC-299) error.  If the proper power-up LED sequence 
is not achieved after following the above suggestions, contact the Repair Department at 
Pressure Systems for additional assistance (1-800-678-SCAN).