NEC Neax 2000 Ivs2 Maintenance Manual

CHAPTER 2  TROUBLESHOOTING
Precautions
NEAX2000 IVS2 Maintenance Manual    
ND-70926 (E), Issue 1.0   Page 53
Static Electricity Guard
You must wear a grounded wrist strap to protect circuit cards from static electricity.
Figure 2-1  Static Electricity Guard (1 of 2)
WHEN PLUGGING/UNPLUGGING A CIRCUIT CARD
WHEN HOLDING A CIRCUIT CARD
PBX
WRIST STRAP
FRAME GROUND SCREW
CARD FRONT
NEVER TOUCH THE COMPONENTS OR 
SOLDERED SURFACE WITH BARE HANDS. 

 NEAX2000 IVS2 Maintenance ManualPage 54  ND-70926 (E), Issue 1.0
CHAPTER 2  TROUBLESHOOTING
Precautions
Figure 2-1  Static Electricity Guard (2 of 2)
WHEN MAKING A SWITCH SETTING ON A CIRCUIT CARD
WHEN CARRYING A CIRCUIT CARD
WEAR A WRIST STRAP AND PERFORM
THE WORK ON A GROUNDED
CONDUCTIVE WORK SURFACE.
CIRCUIT
CARD
WHEN CARRYING A CIRCUIT CARD 
AROUND, KEEP THE CARD IN A
CONDUCTIVE POLYETHYLENE BAG.
CIRCUIT
CARDCONDUCTIVE
POLYETHYLENE
BAG 

CHAPTER 2  TROUBLESHOOTING
Precautions
NEAX2000 IVS2 Maintenance Manual    
ND-70926 (E), Issue 1.0   Page 55
CAUTION
You must hold the edge of a circuit card when plugging or unplugging the circuit card. If you
touch another area, you may be exposed to hazardous voltages.
CARD FRONT
NEVER TOUCH THE COMPONENTS 
OR SOLDERED SURFACE WITH 
BARE HANDS.
PBX 

 NEAX2000 IVS2 Maintenance ManualPage 56  ND-70926 (E), Issue 1.0
CHAPTER 2  TROUBLESHOOTING
Precautions
Turning Power ON
(1) Check the switch position of each PZ-PW121 card before turning power on.
Make sure that the AC120V/240V selector switch is positioned to appropriate voltage for 
each country (AC120V or AC240V).
Make sure that the battery mode selector switch is positioned as shown below to meet the 
kind of battery:
(2) Turn the SW1 switches of all the PZ-PW121 cards to ON. First, turn ON PIM1...

CHAPTER 2  TROUBLESHOOTING
Precautions
NEAX2000 IVS2 Maintenance Manual    
ND-70926 (E), Issue 1.0   Page 57
Turning Power OFF
(1) Before turning power off, make sure that all line/trunk cards are not operating by no busy 
lamps indication.
(2) Turn the SW1 switches of all the PZ-PW121 cards to OFF. First, turn OFF PIM0. Then, turn 
OFF PIM1 to PIM7. 

 NEAX2000 IVS2 Maintenance ManualPage 58  ND-70926 (E), Issue 1.0
CHAPTER 2  TROUBLESHOOTING
Outline of Troubleshooting
OUTLINE OF TROUBLESHOOTING
Figure 2-2 shows an outline of the recommended troubleshooting procedure.
Figure 2-2  Troubleshooting Outline
START
FAULT DIAGNOSIS
AND
TROUBLESHOOTING
Fault Detection Method (See Page 59.)
(1) Alarm Indication on PWRU, Alarm Display
Panel
(2) Lamp Indication on Circuit Cards
(3) Complaint from station user or operator
Fault Diagnosis and Troubleshooting...

CHAPTER 2  TROUBLESHOOTING
Fault Detection
NEAX2000 IVS2 Maintenance Manual    
ND-70926 (E), Issue 1.0   Page 59
FAULT DETECTION
This section describes the way in which alarm indications are given. If a fault occurs in the sys-
tem, you can detect the fault via the routes shown in Figure 2-3.
Figure 2-3  Alarm Indication Routes
PWR CARD
MJ
MN
ON PWR
MJMN
ALARM DISPLAY PANEL
MJ/MN ALARM
INDICATION
MJ/MN ALARM
INDICATION
LAMP INDICATION
CIRCUIT CARD MAINTENANCE
PERSONNEL
COMPLAINT FROM
STATION USER OR...

 NEAX2000 IVS2 Maintenance ManualPage 60  ND-70926 (E), Issue 1.0
CHAPTER 2  TROUBLESHOOTING
Fault Detection
(1) Fault Detection by Alarm Indication
When a fault occurs in the system, you can detect the fault by a Major (MJ) alarm or Minor
(MN) alarm indicated on the AC/DC PWR card or by the external Alarm Display Panel.
(2) Fault Detection by Lamp Indication on Circuit Cards
When a fault occurs in the system, you can detect the fault by lamp indication on circuit
cards, such as a Major (MJ) or Minor...

CHAPTER 2  TROUBLESHOOTING
Fault Detection
NEAX2000 IVS2 Maintenance Manual    
ND-70926 (E), Issue 1.0   Page 61
Table 2-2  Lamp Indications on Circuit Cards 
KIND OF
CIRCUIT CARDCARD NAMELAMP 
NAMECOLORINDICATIONS
NORMAL ABNORMAL
Control Cards PN-CP14 (MP) RUN Green 120 IPM Flash Steady ON or OFF
PN-CP15 (FP) RUN Green 120 IPM Flash Steady ON or OFF
PN-PW00
(EXTPWR)RUN Green Steady ON OFF
PZ-PW121
(AC/DC PWR)ON Green Steady ON OFF
PZ-PW122
(DC/DC PWR)ON Green Steady ON OFF
Application
Processor...

 NEAX2000 IVS2 Maintenance ManualPage 62  ND-70926 (E), Issue 1.0
CHAPTER 2  TROUBLESHOOTING
Fault Detection
Application
Processor CardsPN-30DTC-A
(DTI)RUN Green 120 IPM Flash Steady ON or OFF
AIS Red OFF Steady ON
MRMT Red OFF Steady ON
RMT Red OFF Steady ON
MFRM Red OFF Steady ON
FRM Red OFF Steady ON
PCM Red OFF Steady ON
PN-24PRT
 (PRT)RUN Green 120 IPM Flash Steady ON or OFF
LC Green Steady ON OFF
AIS Red OFF Steady ON
RMT Red OFF Steady ON
FRM Red OFF Steady ON
PCM Red OFF Steady ON
CRC Red OFF...