Older Style Midmark (Red Display) Display PC Board Lamp / Display / Button Check
 

1. Disconnect power cord from the sterilizer
2. Press and hold down the LIQUIDS and PACKS buttons simultaneously, while connecting the power cord to the sterilizer (See Image Below) Release the LIQUIDS and PACKS buttons
3. Observe the display PC board lamps. In a left to right sequence, each lamp on the display PC board should individually illuminate and then extinguish. If all the display PC board lamps do not illuminate and then extinguish, replace display PC board
4. Press and release the UNWRAPPED, POUCHES, LIQUIDS, PACKS, START, STOP, AND ON/STANDBY buttons one at a time and in this order
5. Observe the lamps that correspond with each button. If all lamps do not illuminate and stay illuminated when their corresponding button is pressed, replace the display PC board
6. Observe the pressure and temperature/time displays. If the pressure and temperature/time displays do not display pressure and temperature readings, replace the display PC board
7. Disconnect power cord from the sterilizer