Pioneer CDJ-2000nexus Connection Manual page 12

 CDJ-900
If the mappings are changed, various TRAKTOR series functions can be assigned to any of the CDJ/XDJ's
buttons and knobs. Refer to the instruction manuals provided with the TRAKTOR series for further details.
CDJ-900 buttons
1 PLAY/ PAUSE
2 CUE
3 SEARCH
4 TRACK SEARCH
5 BEAT SELECT
6 AUTO BEAT LOOP 8
7 AUTO BEAT LOOP 4
8 AUTO BEAT LOOP 2
9 AUTO BEAT LOOP 1
10 LOOP IN/CUE
11 LOOP OUT
12 RELOOP/EXIT
13 JOG DIAL
14 ROTARY SELECTOR
15 BACK
16 TAG TRACK/REMOVE
17 DISC EJECT
18 CUE/LOOP CALL
19 DELETE
20 MEMORY
21 JOG MODE
22 SLIP
23 TEMPO ±6/±10/
±16/WIDE
24 MASTER TEMPO
25 TEMPO
12
TRAKTOR functions
PLAY/ PAUSE
CUE
SEARCH BWD/FWD
LOAD PREV/NEXT
LOOP SIZE SWITCH
1/2、8
1/4、4、1/2
1/8、2
1/16、1、1/4
LOOP IN/IN ADJUST
LOOP OUT/OUT ADJUST
RELOOP/EXIT
JOG WHEEL
ROTATE：TREE/
LIST SELECT UP/DOWN
PUSH：LOAD SELECTED
TREE/LIST SWITCH
TREE/EXPAND/COLLAPSE
DECK UNLOAD
PREV/NEXT CUE/LOOP
DELETE CUE/LOOP
STORE CUE/LOOP
JOG MODE
SYNC
TEMPO RANGE
KEY ON/LOCK
TEMPO