NEC Neax 2400 Ipx System Operations And Maintenance Manual
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![Page 602
CHAPTER 7 NDA-24307
Page 574
Issue 1
ROUTINE MAINTENANCE PROCEDURE
3.4 Collection of System Messages
Cause system messages to be displayed.
When a system message is displayed.
Check the results of routine diagnosis.
When the system is operating normally or
after a fault has been restoredRefer to Chapter 3, System Messages.
If the system message indicates a fault,
diagnose the fault by referring to Chapter 5,
and perform fault recovery.
System message [7-O] indicates that the
system is normal.
System...](http://img.usermanuals.tech/thumb/54/84234/w64_nec-ipx-system-op-and-maint-ipx-u-type_d-601.png "Page 602
CHAPTER 7 NDA-24307
Page 574
Issue 1
ROUTINE MAINTENANCE PROCEDURE
3.4 Collection of System Messages
Cause system messages to be displayed.
When a system message is displayed.
Check the results of routine diagnosis.
When the system is operating normally or
after a fault has been restoredRefer to Chapter 3, System Messages.
If the system message indicates a fault,
diagnose the fault by referring to Chapter 5,
and perform fault recovery.
System message [7-O] indicates that the
system is normal.
System...")
NDA-24307 CHAPTER 7 Page 573 Issue 1 ROUTINE MAINTENANCE PROCEDURE 3.3 MAT/Printer Check Check the MAT. System messages are automatically sent to the MAT HD for output. System messages are automatically sent to the external printer for output.Turn ON the MAT’s power. Confirm that the menu appears on the screen. Leave the MAT power ON continuously (lower the CRT brightness when not in use). Confirm that printer power is ON and that the SEL lamp is lit. Check the remaining quantity of printer paper. START END
CHAPTER 7 NDA-24307 Page 574 Issue 1 ROUTINE MAINTENANCE PROCEDURE 3.4 Collection of System Messages Cause system messages to be displayed. When a system message is displayed. Check the results of routine diagnosis. When the system is operating normally or after a fault has been restoredRefer to Chapter 3, System Messages. If the system message indicates a fault, diagnose the fault by referring to Chapter 5, and perform fault recovery. System message [7-O] indicates that the system is normal. System message [7-P] indicates that the system is abnormal. Perform fault recovery by referring to Chapter 3 or Chapter 5. Use the RALM/RALMN command to clear the alarm indication and registered system message. START END
NDA-24307 CHAPTER 7 Page 575 Issue 1 ROUTINE MAINTENANCE PROCEDURE 3.5 Display of Locked-out Station Check the displays of relevant commands to locate any locked-out stations.Check the displays of the following commands: DLSL: Display in the order of LENS. DLSS: Display in the order of Station Numbers When any station in locked-out state is displayedRecover the locked-out station(s) referring to Section 3, Indication of Lockout Stations, Chapter 6. START END
CHAPTER 7 NDA-24307 Page 576 Issue 1 ROUTINE MAINTENANCE PROCEDURE 3.6 Fan Unit Check When the fan is set for automatic start When the fan is set for constant operation When the fan is out of orderPull the FAN START switch toward the front and set it to ON (UP) position. Confirm that the fan has started running. Pull the FAN START switch toward the front and set it to AUTO (DOWN) position. Confirm that the fan is running. Refer to Section 10, Fan Unit Fault, Chapter 5. Replace the fan with a spare by referring to Section 5, Fan Unit Replacement, Chapter 4. START END
NDA-24307 CHAPTER 7 Page 577 Issue 1 ROUTINE MAINTENANCE PROCEDURE 3.7 Alarm Tests An alarm is to be generated which will be displayed at the DESKCON/ATTCON. Be sure to inform the attendant of the test in advance. Replace the –48V fuse in the FANU with a blown fuse. Confirm that an alarm is indicated on the TOPU. Replace the blown fuse with the original –48V fuse. Using the RALM/RALMN command, reset all alarm indications. START END
CHAPTER 7 NDA-24307 Page 578 Issue 1 ROUTINE MAINTENANCE PROCEDURE 3.8 Main Power System Check Note:For a longer battery life, observe the following items: Place the batteries in a dark, cool place. Keep the room temperature within the range of 10°C to 35°C (40°F to 85°F). Floating voltage must be kept within the range of the battery specification at all times. After discharging, perform equalized charging as per the battery specification. Check the load voltage (DC –48V ±5 V) of the rectifier. Check the batteries. Check the forced-charge voltage and floating voltage. Check the specific gravity, liquid level and rated capacity of each battery. START END
NDA-24307 CHAPTER 7 Page 579 Issue 1 ROUTINE MAINTENANCE PROCEDURE 3.9 Trunk RGU Check Check alarm lamps on the line/trunk circuit cards. Check to see if a system message pertaining to a circuit card has been output. Check the speech path for each PIM and also check ringing signal. START END
CHAPTER 7 NDA-24307 Page 580 Issue 1 ROUTINE MAINTENANCE PROCEDURE 3.10 ATTCON/DESKCON Check (1) Attendant Console Check Note:Adjusting Time Method If the Hour (H) button is pushed once, the time will advance one hour. (To push the button, use a thin object, such as a toothpick.) If the H button is held continuously, the time will advance one hour each second. If the Minute (M) button is pushed once, the time will advance one minute. If the M button is held continuously, the time will advance one minute each second. Figure 7-2 Adjusting Time on ATTCON Ask the operator at each ATTCON if the ATTCON is operating normally. Each operator presses the LCHK button on the ATTCON and confirms that all the lamps on the control panel light up. When the ATTCON is equipped with a Time Indicator Section, the operator also checks the displayed time. START END STATION/TRUNK NUMBER AM PM TIMEADJUST. HM
NDA-24307 CHAPTER 7 Page 581 Issue 1 ROUTINE MAINTENANCE PROCEDURE (2) Desk Console Check Note 1:The lamp checks can be suspended any time when the * key on the control panel is pressed. Note 2:The DESKCON obtains time information only from the PBX side. Therefore, adjust the time and date using the MAT command. Figure 7-3 Desk Console Ask the operator at each DESKCON if the DESKCON is operating normally. On the DESKCON control panel, each operator presses the L3, SRC, and Release keys simultaneously and confirms that all the lamps on the control panel light red. Operator presses the # key and confirms that all the lamps on the same transverse line between the EMG and Mute lamps light green. Refer to the figure below. Operator presses the # key and confirms that all the green lamps (in the step above) go OFF and the LCD on the DESKCON displays black. Operator presses the # key and confirms the black LCD display is cleared and a ringing tone is heard. Operator presses the # key and confirms the provided ringing tone has suspended. Operator presses the keys on the DESKCON one by one and confirms that each lamp, corresponding to the pressed key, emits a light and the name of the key displays on the LCD, respectively. Operator presses the * button and completes the lamp checks. Note1 Operator checks the displayed time on the right part of LCD. Note 2 START END HoldRelease L6L5L4L3L2L1 0 896 3 5 2 1 4 7 # SRCDESTTalk Cancel Answer BUSYLDN Alarm Position AvailablePosition BusyNightATNDNANSRECALLPAGETIE TRKSL EMG Call Park SC SVC StartREC Mute BV 3:25 PM WED 1
CHAPTER 7 NDA-24307 Page 582 Issue 1 ROUTINE MAINTENANCE PROCEDURE 3.11 System Check Check the OPE lamps (green) on all circuit cards. Check whether a system message pertaining to the CPU/TSW has been output. Check speech conditions by establishing a station-to-station connection at each PIM. If the condition is abnormal, determine the nature of the problem (dial tone cannot be heard, no speech can be established, etc.) Does the condition occur in No. 0 TSW or in No. 1 TSW? Does the condition occur in No. 0 CPU or in No. 1 CPU? Using MEM_HDD/MEM_HDD_N command, check the data memory. START END