NEC Neax 2400 Ipx System Operations And Maintenance Manual
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![Page 442
CHAPTER 5 NDA-24307
Page 414
Issue 1
FAULT REPAIR PROCEDURES
7.2 Control System Fault - Fault Occurs Intermittently
Faulty Situation:
Fault occurs intermittently at ACT side in the dual configuration system.
Fault occurs intermittently in the single configuration system.
[0-C] ~ [0-K] CPU Failure
[1-C] Both TSW Write Failure
[1-D] TSW Write Failure
[3-D], [3-E] Lock-Up Failure (Permanent/Temporary)
(1) For Dual Configuration
Replace ACT-side related circuit card with
a spare, and check.
Replace the...](http://img.usermanuals.tech/thumb/54/84234/w64_nec-ipx-system-op-and-maint-ipx-u-type_d-441.png "Page 442
CHAPTER 5 NDA-24307
Page 414
Issue 1
FAULT REPAIR PROCEDURES
7.2 Control System Fault - Fault Occurs Intermittently
Faulty Situation:
Fault occurs intermittently at ACT side in the dual configuration system.
Fault occurs intermittently in the single configuration system.
[0-C] ~ [0-K] CPU Failure
[1-C] Both TSW Write Failure
[1-D] TSW Write Failure
[3-D], [3-E] Lock-Up Failure (Permanent/Temporary)
(1) For Dual Configuration
Replace ACT-side related circuit card with
a spare, and check.
Replace the...")
![Page 444
CHAPTER 5 NDA-24307
Page 416
Issue 1
FAULT REPAIR PROCEDURES
7.3 Control System Fault - STBY Side is Faulty
Faulty Situation:
Fault has occurred in the STBY side of dual configuration system.
[0-I] STBY CPU Failure
The ACT side has become faulty, and system changeover has executed.
[0-C], [0-H], [0-J] Processor Failure (ACT side)
Replace STBY side related circuit cards
with a spare, and check.Replace the circuit cards individually by
referring to the following paragraphs in Chapter
4:
LN
Section...](http://img.usermanuals.tech/thumb/54/84234/w64_nec-ipx-system-op-and-maint-ipx-u-type_d-443.png "Page 444
CHAPTER 5 NDA-24307
Page 416
Issue 1
FAULT REPAIR PROCEDURES
7.3 Control System Fault - STBY Side is Faulty
Faulty Situation:
Fault has occurred in the STBY side of dual configuration system.
[0-I] STBY CPU Failure
The ACT side has become faulty, and system changeover has executed.
[0-C], [0-H], [0-J] Processor Failure (ACT side)
Replace STBY side related circuit cards
with a spare, and check.Replace the circuit cards individually by
referring to the following paragraphs in Chapter
4:
LN
Section...")
NDA-24307 CHAPTER 5 Page 413 Issue 1 FAULT REPAIR PROCEDURES 7. CONTROL SYSTEM FAULT This section explains the fault repair procedure for the control system listed in Table 5-9. 7.1 Check Point When repairing the control system, check the status of the following lamps: LN CPR GT TSW MUX EMA ISW CPR IOGT TSW HSW EMA Figure 5-1 and Figure 5-2 shows a block diagram of the control system. Table 5-9 Control System Fault Situation FAULTY SITUATION REFERENCE SECTION Fault occurs occasionally at the ACT side.Section 7.2, Control System Fault - Fault Occurs Intermittently STBY side is faulty.Section 7.3, Control System Fault - STBY Side is Faulty
CHAPTER 5 NDA-24307 Page 414 Issue 1 FAULT REPAIR PROCEDURES 7.2 Control System Fault - Fault Occurs Intermittently Faulty Situation: Fault occurs intermittently at ACT side in the dual configuration system. Fault occurs intermittently in the single configuration system. [0-C] ~ [0-K] CPU Failure [1-C] Both TSW Write Failure [1-D] TSW Write Failure [3-D], [3-E] Lock-Up Failure (Permanent/Temporary) (1) For Dual Configuration Replace ACT-side related circuit card with a spare, and check. Replace the circuit cards individually referring to the following sections in Chapter 4: LN Section 1.3.1, CPR Replacement Procedure Section 1.3.2, EMA Card Replacement Procedure Section 2.3.1, GT Card Replacement Procedure Section 2.3.2, TSW Card Replacement Procedure Section 3.3.2, MUX Card Replacement Procedure ISW Section 1.3.1, CPR Replacement Procedure Section 1.3.2, EMA Card Replacement Procedure Section 4.3.1, IOGT Card Replacement Procedure Section 4.3.2, TSW Card Replacement Procedure Section 4.3.3, HSW Card Replacement Procedure Place the replaced circuit card into ACT mode individually by executing CPU or Speech Path System changeover. Refer to Section 12, Chapter 6. Check to see if a station-to-station connection can be set up and identify a circuit card responsible for the fault. After all the steps are complete, place the whole circuit card examined above to the ACT mode. Refer to Section 12, Chapter 6. When a fault is not indicated, set the faulty system to STBY mode. Refer to Section 12, Chapter 6.Check to see if a fault is indicated. ATTENTIONContents Static Sensitive Handling Precautions Required START A
NDA-24307 CHAPTER 5 Page 415 Issue 1 FAULT REPAIR PROCEDURES (2) For Single Configuration Replace the related circuit card with a spare, and check.Replace the circuit cards individually by referring to the following sections in Chapter 4: LN Section 1.3.1, CPR Replacement Procedure Section 1.3.2, EMA Card Replacement Procedure Section 2.3.1, GT Card Replacement Procedure Section 2.3.2, TSW Card Replacement Procedure Section 3.3.2, MUX Card Replacement Procedure ISW Section 1.3.1, CPR Replacement Procedure Section 1.3.2, EMA Card Replacement Procedure Section 4.3.1, IOGT Card Replacement Procedure Section 4.3.2, TSW Card Replacement Procedure Section 4.3.3, HSW Card Replacement Procedure Initialize the system by pressing the START button on the TOPU and check to see if a station-to-station connection can be set up and identify a circuit card responsible for the fault. AT T E N T I O NContents Static Sensitive Handling Precautions Required A END
CHAPTER 5 NDA-24307 Page 416 Issue 1 FAULT REPAIR PROCEDURES 7.3 Control System Fault - STBY Side is Faulty Faulty Situation: Fault has occurred in the STBY side of dual configuration system. [0-I] STBY CPU Failure The ACT side has become faulty, and system changeover has executed. [0-C], [0-H], [0-J] Processor Failure (ACT side) Replace STBY side related circuit cards with a spare, and check.Replace the circuit cards individually by referring to the following paragraphs in Chapter 4: LN Section 1.3.1, CPR Replacement Procedure Section 1.3.2, EMA Card Replacement Procedure Section 2.3.1, GT Card Replacement Procedure Section 2.3.2, TSW Card Replacement Procedure Section 3.3.2, MUX Card Replacement Procedure ISW Section 1.3.1, CPR Replacement Procedure Section 1.3.2, EMA Card Replacement Procedure Section 4.3.1, IOGT Card Replacement Procedure Section 4.3.2, TSW Card Replacement Procedure Section 4.3.3, HSW Card Replacement Procedure Place the circuit cards into ACT mode by executing CPU changeover. Refer to Section 12, Chapter 6. Check to see if a station-to-station connection can be set up to identify the circuit card responsible for the fault. When a fault is not indicated, set the faulty systems to STBYmode. Refer to Section 12, Chapter 6. ATTENTIONContents Static Sensitive Handling Precautions Required START END
NDA-24307 CHAPTER 5 Page 417 Issue 1 FAULT REPAIR PROCEDURES 8. ALARM INDICATION FAULT This section explains the fault repair procedure where any of the faults shown in Table 5-10 occur. 8.1 Check Point When repairing an alarm indication fault, check the alarm cable route shown in Figure 5-10 and Figure 5- 11. 8.2 Fault of Alarm Indicating Panel Table 5-10 Alarm Indication Fault Situation FAULTY SITUATION REFERENCE SECTION A fault is indicated on the TOPU, but it is not indicated on the Alarm Indicating Panel (External Alarm Indicating Panel).Section 8.2, Fault of Alarm Indicating Panel A system message is indicated, but no alarm indication is made on the TOPU. An alarm lamp on the circuit card is lighting, but no alarm indication is made on the MAT or on the TOPU.Section 8.3, Fault That Cannot Be Detected ATTENTIONContents Static Sensitive Handling Precautions Required Confirm lamps and power supply circuit of the Alarm Indicating Panel. Confirm cross connections on the MDF. Confirm that the connector of 16 PH EXMISC CA is firmly plugged in the MISC 0A connector on the backplane of LPM. START END
CHAPTER 5 NDA-24307
Page 418
Issue 1
FAULT REPAIR PROCEDURES
Figure 5-10 Cable Routing for Alarm Indications
Alarm
Indicating
Panel
KEYDSP
DSPLKEY
ALMA
ALMB
MISC0B
MISC0A
EXALM
ALM1
CN3CN2CN1CN0
KEY
(00) (04) Alarm Lamps
TOPU
ISWMTOPU
ISWM
LPM LPM
00 0403 02 01
MMC
PH-M22
To CN0 connector of LN0 To CN0 connector of LN1 To CN0 connector of LN2 To CN0 connector of LN3
MDF68PH EXMISC CA Cable
A
ISW (FRONT VIEW) ISW (REAR VIEW)
: CHAMP connector-ended cable: Internal alarm bus cable
: Connector: Circuit CardA: To alarm information of PWRSW, HSW, TSW, etc. - Symbols =
EMA (PH-PC40)
NDA-24307 CHAPTER 5
Page 419
Issue 1
FAULT REPAIR PROCEDURES
Figure 5-11 Cabling Related to Alarm Indicating Panel
Table 5-11 PIN Location of External Alarm
126
2MPALM 27
328
4 EXTAA 29
530
6 BELAA 31
732
8MNAA 33MNBA
9 SUPAA 34 SUPBA
10 MJAA 35 MJBA
11 36
12 37
Alarm
Indicating
Panel
LPM
Backplane
MISC0A
BELAA
MNAA
SUPAA
MJAA
BELBA
MNBA
SUPBA
MJBA
RPT1(G)
RPT0(-48V)
Fuse
-48V
G
MJ / MN / BELL ISW
CHAMP Connector Cable
MDF 68PH EXMISC CA Cable
Power Receiving Terminal
CHAPTER 5 NDA-24307
Page 420
Issue 1
FAULT REPAIR PROCEDURES
Figure 5-12 Distribution/Collection of Key/Alarm Information within the System
PZ-DK222
(TOP KEY)
PH-PC40 PH-M22
EMA
RELAY
RECEIVER
PZ-DK222
(TOP KEY)
PH-PC40 PH-M22
EMA
RELAY
RECEIVER
PZ-DK227
(TOP KEY)
PH-PC40 PH-M22
EMA SEL
RELAY
RECEIVER
ISEL ISW
LN LN
AUDIBLE
AND
VISUAL
ALARM
INDICATING
PANEL
KEY INFORMATION
ALM INFORMATION
This figure shows the flow of alarm and key information between ISW and each LN.
NDA-24307 CHAPTER 5
Page 421
Issue 1
FAULT REPAIR PROCEDURES
Figure 5-13 Alarm Bus Cable Connections Diagram (1/2)
To MMC ( ) of LN3 To MMC ( ) of LN2 To MMC ( ) of LN1
ISWM
HSW0/1TSW0/1IOGT0/1PLO0/1PWRSW
0/1
ISWM
ALMA
ALMB
DSPLTOPUPZ-DK227
This figure shows the alarm bus cable connections diagram.
IMG0 (LN0)
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 3
ALMA
ALMB
DSPLKEY
KEY
TOPU
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 0
ALMA
ALMB
EMAFHALMEMA
CN0
CN0
CN0
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 1
ALMA
ALMB
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 2
ALMA
ALMB
PZ-DK222
IMG1 (LN0)
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 3
ALMA
ALMB
DSPMTOPU
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 0
ALMA
ALMB
TSWM0 (REAR VIEW)
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 1
ALMA
ALMB
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 2
ALMA
ALMB
PZ-DK222
PALMPWR1LANI 1ISAGT-1A
PWR0LANI 0ISAGT-0A
ISAGT-1B
ISAGT-0B
PZ-PW92
PZ-PW92
PALM
00 01 02 03 04
CN0
KEY
MMC
LPM (FRONT VIEW)
PALMPWR1LANI 1ISAGT1
PWR0LANI 0ISAGT0
PZ-PW92
PZ-PW92
PALM
00 01 02 03 04CN3CN2CN1CN0
KEY
MMC
LPM (FRONT VIEW)
LED3
LED2
LED1
ALM3
MUSIC
ALM2
ALM1
EXALMDSP
ALMKEY
PALM1
MISC0B
PALM0
LPM (REAR VIEW)Slot 00 Slot 04LED3
LED2
LED1
ALM3
MUSIC
ALM2
ALM1
EXALMDSP
ALMKEY
PALM1
MISC0B
PALM0
LPM (REAR VIEW)Slot 00 Slot 04
To
of IMG2
: Alarm-related connector: Circuit Card: External Cable
< ISW: Inter-node Switch >
MMC : PH-M22 EMA: PH-PC40 PWRSW: PH-PW14 HSW: PU-SW01 TSW: PU-SW00 LANI: PZ-PC19
ISAGT: PZ-GT13 IOGT: PH-GT10 PLO: PH-CK16-A/PH-CK17-A
< LN: Local Node >
MMC: PH-M22 EMA: PH-PC40 ISAGT-A: PZ-GT13 ISAGT-B: PZ-GT20 MUX: PH-PC36 LANI: PZ-PC19
EMAEMA
EMAEMAEMA
CHAPTER 5 NDA-24307
Page 422
Issue 1
FAULT REPAIR PROCEDURES
Figure 5-13 Alarm Bus Cable Connections Diagram (2/2)
LED3
LED2
LED1
ALM3
MUSIC
ALM2
ALM1
EXALMDSP
ALMKEY
PALM1
MISC0B
PALM0
LPM of LN0 (REAR VIEW)Slot 00 Slot 04
EMA
This figure shows the alarm bus cable connections diagram.
: Alarm-related connector: Circuit Card: External Cable
EMA: PH-PC40 MUX: PH-PC36
IMG2 (LN0)
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 3
ALMA
ALMB
DSPMTOPU
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 0
ALMA
ALMB
TSWM1 (REAR VIEW)
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 1
ALMA
ALMB
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 2
ALMA
ALMB
PZ-DK222
To
of IMG1
IMG3 (LN0)
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 3
ALMA
ALMB
DSPMTOPU
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 0
ALMA
ALMB
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 1
ALMA
ALMB
MUX 0LC/TRKMUX 1PWR
DPWR
PIM 2
ALMA
ALMB
PZ-DK222
ALMEMA
EMA