Disassembly / Reassembly Procedures 21
4-4 Control System Board & Software 4-4-1 Cont rol System Board
To change the Control System Board, it is necessary to disassemble Re ar Panel, as described in
section 4-3.
1. Remove all connectors.
2. Remove the five M3 socket screws.
3. Remove the print.
Assemble in reverse order.
Never change the settings of the three potmeters, marked 1, 2 and 3 in figur e 15.
4-4-2 Software
The Control System of the Seal 44 Ultra is software driven.
The software resides in a small embedded controller, mounted on the Contr ol System Board.
Necessay tools: IC extractor
Approximate time: 1 minute
To change / upgrade the software, it is necessary to perform the ‘Rear Pan el’ Procedure, described in
section 4-3.
Make sure that the power cord is disconnected from the mains !
1. See figure 15. Arrow #4 points to the processor (it usually has a sticker showing the sof tware
version). Carefully remove it using the IC extractor.
2. To insert the new processor, make sure that its pins are not bent, and that the small notch on the
side of the processor matches the symbol, printed on the PCB (arrow #4 actual ly points to the
notch). Use the extractor to insert the new processor.
3. Discard the old processor.
fig. 15
1 2 3
4