Panasonic KX-T336 System Reference Manual page 1493

3.39 DSP Failure / DSP Link Failure
Error Code
Possible cause of
the malfunction
Countermeasures
3XYY X=1 : an option card-1 (DSP-1) error is detected in on-line mode.
X=2 : an option card-2 (DSP-2) error is detected in on-line mode.
X=3 : an option card-1 (DSP-1) error is detected during card boot-up.
X=4 : an option card-2 (DSP-2) error is detected during card boot-up.
YY=01 to 42 : Slot Number
DSP Failure : Option card (DSP) does not work.
DSP Link Failure : Communication Error between Option card (DSP) and E-1
card.
Test Results OK
14-E-37-5
(70695)
Replace the DSP card on E-1 card.
Execute DSP diagnosis.
Test Results
NG
Replace the E-1 card
End