Mindray DC-8 EXP Service Manual

4-26 Product Principle
 When system is shut down, disconnect the AC power, when the battery is in use, the battery
management will shut down the 5VSTB and 3.3VSTB output, that is to say, the power
management itself will be powered off until AC powered on.
 On standby mode, disconnect the AC power, when the battery is in use, the battery provides
12VSTB power, and transfers into 5VSBT and 3.3VSTB for system use in standby mode.
The power on process is shown as below:
Input AC
Press the power button
（Control panel）
Receive PWR_BTN_N
（Power management
FPGA）
Power management output
PWRBTN# enable
S3#和S4# disenabled
（CPU module output）
EDC_+12V_EN_N enable
（Power management
output）
AC-DC transmit 12V
power
EDC_+12V_OK_N enable
（AC-DC output）
PWR_OK enable
（Power management
output）
CPU start up
（CPU module）
DC-DC module
output other
powers
Fig 4-30 System power on Process

Mindray DC-8 EXP Specifications

General

Brand	Mindray
Model	DC-8 EXP
Category	Medical Equipment
Language	English