Parts That Operate When The Main Power Switch (Sw1) Is Turned On - Konica Minolta BIZHUB 750 Service Manual

26. OTHERS
26.3.2

Parts that operate when the main power switch (SW1) is turned ON

A. Composition
CBR1
CBR2
B. Operation
Turning on the main power switch (SW1) supplies the AC power source to the DC power sources /1 (DCPS1)
and /2 (DCPS2). In this manner, DCPS2 generates 5 VDC to supply it to the image processing board (IPB) and
the printer control board (PRCB). IPB sends this DC power source to the status management control section of
the system control board (SCB) to stand by for the turn-on of the power switch (SW2). And, SCB sends this DC
power source to the operation board /2 (OB2) through the operation board /1 (OB1) to turn on the power source
lamp. And also, when the network setting: set, inputting the AC power source allows DCPS1 to generate 12
VDC to supply it to the IPB and HD-503 (optional).
DCPS that generates 5 VDC is provide with a power save mechanism so that it consumes less power while in
the stand-by.
106
SW1
NF Coil/2
Theory of Operation Ver1.0 Aug.2005
Coil/1 EU only
DCPS1
12VDC
PRCB
IPB
DCPS2
5VDC
SW2
SCB OB1 OB2
57aat2e014na