５
PCB EXPLANATION
ＭＵＸ-１００ SERVICE MANUAL
５ - １
5-1 NEXSC PCB
Function
This is the CPU PCB which controls MUX-100D using the software. Different from the NEXSC PCB used in other
generators and fluoroscopy units, this NEXSC PCB is not equipped with an optical cable connector. (The NEXSC
PCB equipped with an optical cable connector can be used in the MUX-100D.)
The following data is stored in this PCB. It is recommended to back up the following data in preparation for PCB
replacement.
Initial setting data
FVR value
Phototimer tube voltage correction value
APR
Number of times of exposure
During PCB replacement
When replacing the PCB, set the DIP switches first, then initialize the PCB. After that, perform the initial setting,
adjust the FVR and register the APR.
Lithium battery replacement
When the life of the lithium battery is expired, the information (contents displayed just before the power was turned off
last time, the error log and the time setting) stored in the SRAM will be erased. When the message requesting battery
replacement is displayed, replace the battery using the following procedure.
①
Turn on the power. ON
→
②
Replace the existing lithium battery with a new one.
→
③
Confirm the operation.
LED list
LED No.
Description
LD1
LD2
Indicate the status in the 7-segment display area as shown
below.
LD3
〜
6
Flickers while the X-ray tube is released.
Meaning of indication by the LD1 and the LD2 in the 7-segment display area
SS: An input is given from a sheet key.
On: Exposure is being performed.
OF: Exposure is finished.
