Olivetti d-Color MF4003 Service Manual page 637

d-Color MF4003/MF3303
(1) Power supply
When the power cord is unplugged after turning OFF the
main power switch, partial power switches will remain
powered for monitoring the operation of the main power
switch.
Therefore, at the time of disassembly and reassembly, be
sure to turn OFF the main power switch and unplug the
power cord from the power outlet.
When replacing a unit or board with the power cord being
connected to the power outlet, a risk of electric shock or
damaging the unit or board exists.
• When the main power switch is turned OFF but the power cord is still connected to the power outlet, only the following power switches
are powered.
5.1V
(2) Quick start up function
• This function shortens the start up time (*).
• A "Quick start up data" is generated, the CPU operating power is powered between a certain time after the main power switch is turned
OFF to maintain the On Board Memory in the storage board.
• After the "Quick start up data" has been saved, the CPU operating power turns OFF. However, partial power switches will remain
powered for monitoring the operation of the main power switch.
• At next time, the saved "Quick start up data" will be used to start up the machine.
NOTE
▪ *: Start up time indicates "Panel accessible time", "BOX screen accessible time" and "Network accessible time".
▪ After the main power switch is turned OFF, turn on the main power switch before the "Quick start up data" is saved to start up
the machine at normal speed.
▪ Also, when the power cord is unplugged before the "Quick start up data" is saved after the main power switch is turned OFF,
the machine will start up at normal speed.
Y119930-3
P THEORY OF OPERATION > 1. d-Color MF4003/MF3303
WARNING
• Base board (BASEB)
• DC power supply unit (DCPU)
P-63
Service Manual