Figure 151  Soldered EEPROM 
On later versions the EEPROM (device IC17) is fitted in a socket (see below) and can be replaced without 
removing the Main Control Processor Board. 
 
Figure 152  Plug in EEPROM 
You will note from the image above that the EEPROM is now a smaller device and is supplied on a small 
daughter board which plugs into the existing socket on the Main Control Processor Board. 
The part number of the MK6 Replacement EEPROM PCB is 1-44782-K182. 
Before starting any replacement work you must first record the following system configuration details. 
•  Number of engines. Can be seen on the main display screen 
•  Number of detectors per engine. Can be seen on the engine display screen 
•  Average alarm setting for each engine. Default value 0.7mg/l. 
•  Deviation alarm for each engine. Default value 0.3mg/l.