Error Code

Software or Circuit

12

Display/recorder microprocessor RAM (U1)

13

Display interface ROM (U14)

14

D/A converter CRC

15

Transfer switching (Q4, CR4)

16

Transfer enable stuck on

17

Charge reference out of tolerance

18

Preamp baseline out of tolerance

19

Clock

20

+5 V Supply out of tolerance

21

+15 V Supply out of tolerance

22

Defib cal factors out of tolerance

23

A/D converter (U9) self-test

24

Recorder printhead resistance out of tolerance