NEC PX-50XM4 series Service Manual page 284

* Top view of the power unit for the PX-61XM3/61XR3 Series
P
V
Adjustmen
t of 5V
P
RV3
M
D+3.3 ADJ
P
N
P
A
AC
PD
CH1 CH3
D.GND Vcc
CH4
Vd
RV5
D+70 ADJ
RV2
D+5 ADJ RV6
D+170 ADJ
Adjustment of
the Vd voltage
6-7
PH
CH2
Vs
Adjustment of
the Vs voltage
CONFIDENTIAL