HP LaserJet Enterprise 600 - Page 41

Low-voltage power supply
The low-voltage power supply converts AC power from the power receptacle into DC power to cover
the DC loads.
Figure 1-12 Low-voltage power supply
Trans-
former
(T1)
Rectifying
circuit
Constant-
voltage
control circuit
Abnormal
status latch
photocoupler
(PC1)
Constant-
voltage control
photocoupler
(PC2)
Door open
detection switch
(SW101)
Control IC
(IC1)
Fuse
(FU1)
Power button
(SW1)
Fuse
(FU2)
100V: Open
200V: Close
Power supply unit
Sleep
switch 3
High-voltage
power supply
DC controller
+5V
generation circuit
Protection
circuit
Low-voltage power supply
Fuser
control
Noise
filter
Noise
filter
Rectifying
circuit
Rectifying
circuit
Sleep
switch 2
Sleep
switch 1
+24VA
ACH
ACN
5VPRO
/AC200
JP1001
+24VB
/DOPEN
+5V
+24VA
+24VC
+3.3R
+24R
+24U
+3.3V
+24VA
+24VC
ENWW
Engine-control system
17