11-4
CIRCUIT DESCRIPTION
“Confidential, Do Not Duplicate without written authorization from NEC.”
5. H/W Install
This board is connected to the PCle connector on the Mother PWB via the card edge (PO1700).
6. POWER
The input power is fed at +5V DC and +12V DC.
Refer to the diagram below in regard to the power supply system for the respective devices.
1
12V
The power is fed from the GPSU via the Mother PWB.
2
5V
The power is fed from the DIV PWB via the Mother PWB.
The main power 3.3V is gained by step-down from 5V through the Series Regulator (PQ070XH02 @
IC7300).
The LED (D7300) is an indicator of this line being in live state.
IC7300
REG
5V
IC7005
RTC
IC7110
Protector
IC7120
REG
IC7217
Buffer
IC7213
Buffer
IC7216
Switch
IC7215
Switch
IC7000
CPU
IC7001
REG
IC7006
PROM
IC7007
SDRAM
IC7008
FLASH0
IC7009
FLASH1
IC7100
ASSIST3
IC7101
LAN
IC7001
REG
IC7218
RS232
IC7004
RS232
IC7103
PROM
1.3V
2.5V
Q7105
FET
12V
M7005
D-SUB
C
A
R
D
E
D
G
E
3.3V
Summary of Contents for NP-NC900C-A
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