NEC IP8800/S6300 User Manual

Page of 250
1.   
Overview
3
1.2
System and Partial Failure Analysis Overview
1.2.1
Failure Analysis for IP8800/S6700, IP8800/S6600, and IP8800/
S6300
If a failure occurs during operation and the system can be visually and directly checked, follow the procedure in 
"
" to troubleshoot.
The device status is displayed on the basic control unit (BCU) for IP8800/S6700,  the control and switching unit (CSU) 
for IP8800/S6600, and management and switching unit (MSU) for IP8800/S6300. LED display of BCS/CSU/MSU is 
shown in the "
." Also, Front panel layout is shown in the "
."
For LEDs of optional components other than BCU/CSU/MSU shown as an example (BSU, NIF, power supply, and fan 
unit) and the layout of front panel other than "
," see the manual "Hardware 
Installation Guide."
Even though the system cannot be visually and directly checked, troubleshooting can be performed similarly by 
checking system LEDs using the operation command from the remote operation terminal.
Table 1-1: LED Indications, Switches, and Connectors
No.
Name
Type
Status
Description
1
STATUS
LED: Green/Orange/
Red
Operation status of BCU/
CSU/MSU
Lit in green: Operational
Lit in orange: Self-diagnosis in progress
Blinking in green: Loading software
Lit in red: Failure detected
OFF: Power is OFF (BCU/CSU/MSU replaceable)
*1
2
SYSTEM 
OPERATION 
PANEL
LCD and operation key
System operation panel
Displays the device information, operation 
instructions, and failure information (for details, see 
the manual "Configuration Settings")
3
ACC
LED: Green
Memory card status
Lit in green: Accessing the memory card (never detach 
it).
OFF: Memory card in idle state (memory card setting/ 
removal permitted)
4
SD CARD
Connector
SD card slot
SD card slot
5
RESET
Switch
(Non-locked)
System manual reset 
switch
Pressing and holding for a second
: When the system fails
*2*3
Pressing and holding for 5 seconds
: When the password is forgotten
*2*4
6
ACH
Switch
(Non-locked)
BCU/CSU/MSU 
switchover switch
When BCU/CSU/MSU is redundant, switchover 
between the active system and standby system is 
performed
.
*2*5
7
ACTIVE
LED: Green
BCU/CSU/MSU operation 
status
Lit in green: Active system
OFF: Standby system
8
SYSTEM1
LED: Green/Orange/ 
Red
System status
Lit in green: Operational
Lit in orange: System partial failure detected
Lit in red: System failure detected