Mindray DC-25, Руководство по обслуживанию

Страница: 63 / 213

Hardware Principle 4-9
No.
Power
description
Support circuit module or function Remarks
1 +12V
CPU module, Monitor, Fan, Control panel,
DVD-RW
2 -12V No use
3 +5V
HDD, Control panel, Front-end of the main
board, Probe board, DVD-RW, Probe, Monitor
4 -5V Front-end of the main board
5 5VSTB
CPU module
6 3V3
Front-end of the main board, back-end of
the main board
7 1V2
Back-end of the main board (FPGA core
voltage)
8 1V8A Front-end of the main board (receiving chip)
9 1V8
Back-end of the main board ( video encoder,
FPGA IO voltage , DDR2)
10 2V5
Back-end of the main board ( video encoder,
FPGA IO voltage)
11 +95V
Probe board (high-voltage switch), 192-array
probe
12 -95V
Probe board (high-voltage switch), 192-array
probe
13 +PHV Transmitting high-voltage
14 -PHV
Transmitting high-voltage
4.3.2 System Power-on Control
CPU
module
PWR_BTN_N
+12V
S3_N
S4_N
CPU_PWR_BTN_N
PWR_OK_N
5VSTB
Power
manag
ement
FPGA
AC-DC
Power
board
12V
AC
online
signal
DC-DC power board
Main board
Control
panel
PWR_12V_EN
PWR_5VSTB_EN
PWR_5VSTB_OK_N
PWR_12V_OK_N