Parts That Operate When The Sub Power Switch (Sw2) Is Turned On - Develop ineo+ 6500 Service Manual

25. OTHER CONTROLS
25.1.2

Parts that operate when the sub power switch (SW2) is turned on

A. Configuration
CBR/1
CBR/2
B. Operation
• When the sub power switch (SW2) turns ON, the overall control board (OACB) sends a control signal to the
DC power unit /1 (DCPS/1) via the image memory control board (IMCB) and the I/F board (IFB).
• DCPS /1 generates voltages of 3.3VDC, 5VDC, 12VDC, 24VDC, and distributes them to the printer control
board (PRCB) and other control boards.
• Then, the PRCB sends a control signal to the DC power unit /2 (DCPS/2) in order to make the unit generate
24 VDC is supplied to the all driver boards and option units.
• Main relay (RY/1) turns ON to supply AC power to the fusing heater lamp /1 (L2), /2 (L3), /3 (L4) and /4(L5),
and the initial operation is performed.
• The sub relay (RY/2) turns OFF to shut off the AC power to the dehumidifier heater (HTR), the dehumidifier
heater /1 inside the PF/LU (HTR1), and the dehumidifier heater /2 (HTR2) (PF only).
122
SW1
NF
DCPS/1
DCPS/2
24VDC
SW3
ACDB
Theory of Operation Ver1.0 Sep.2006
5VDC
3.3VDC IFB
24VDC 12VDC
24VDC
12VDC
PRCB
5VDC
24VDC 24VDC
DF PF LU
AC drive
section
RY/1
RY/2
SW2
OACB
IMCB
HD
PK
24VDC
24VDC 24VDC 24VDC
FS RU PI
L2,L3,L4,L5
HTR
LU/PF(OPTION)
HTR1 HTR2
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