Tempo Zero Point Adjustment - PIONEER DJ AlphaTheta CDJ-3000 Service Manual

5

8.5 TEMPO ZERO POINT ADJUSTMENT

Necessary Adjustment Points
g
When
Exchange the
TEMPO SLIDER VR
Jigs
g
" ≠ Precise screwdriver (small)
Zero Point ADJ.
Notes:
Perform the adjustment before SLDB Assy mounting.
Repeat the adjustment until the voltage becomes 0 ±5 mV.
1 Insert the insulation sheet between SLDB Assy and
the main unit.
2 Match the knob section of slide VR with
CENTER POSITION.
CENTER POSITION
5
6
Adjustment points
VR8401
(ZERO POINT ADJ)
" Digital multimeter which
can be measured to 0.1mV.
" Insulation sheet (The thing
that is bigger than PCB)
Insulation
sheet
SLDB Assy
Knob section of slide VR
6
7
Adjustment and Check Points
g
3 Adjust it so that turn VR8401, and the voltage of the
digital multimeter becomes 0 ±5 mV.
0 ±5 mV
Pin 2: ADIN
Pin 1: ADCT
VR8401
(ZERO POINT ADJ)
CDJ-3000
7
8
TEMPO knob
(SLDB Assy)
SLDB ASSY
L F
T.RESET
DWX4266-
DWX -
SLDB
ZERO POINT
ADJ
ADJ
TEMPOSLIDER
SIDE A
8
A
B
C
D
E
F
75