NEC Neax 2400 Imx System Operations And Maintenance Manual
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![Page 528
NDA-24238 CHAPTER 7
Page 501
Revision 3.0
ROUTINE MAINTENANCE PROCEDURE
2.4 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 is restoredRefer to Chapter 3.
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]...](http://img.usermanuals.tech/thumb/54/84348/w64_nec-neax2400-imx-system-operations-and-maintenance-manual_d-527.png "Page 528
NDA-24238 CHAPTER 7
Page 501
Revision 3.0
ROUTINE MAINTENANCE PROCEDURE
2.4 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 is restoredRefer to Chapter 3.
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]...")
CHAPTER 7 NDA-24238 Page 504 Revision 3.0 ROUTINE MAINTENANCE PROCEDURE 2.7 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 command, reset all alarm indications. START END
NDA-24238 CHAPTER 7 Page 505 Revision 3.0 ROUTINE MAINTENANCE PROCEDURE 2.8 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
CHAPTER 7 NDA-24238 Page 506 Revision 3.0 ROUTINE MAINTENANCE PROCEDURE 2.9 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
NDA-24238 CHAPTER 7 Page 507 Revision 3.0 ROUTINE MAINTENANCE PROCEDURE 2.10 ATTCON/DESKCON Check (1) Attendant Console Check Note:Adjusting Time Method (see Figure 7-2.) 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
CHAPTER 7 NDA-24238 Page 508 Revision 3.0 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 Figure 7-3. 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. Note 1 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
NDA-24238 CHAPTER 7 Page 509 Revision 3.0 ROUTINE MAINTENANCE PROCEDURE 2.11 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 command, check the data memory. START END
CHAPTER 7 NDA-24238 Page 510 Revision 3.0 ROUTINE MAINTENANCE PROCEDURE 3. ROUTINE MAINTENANCE CHECK LISTS This section provides check lists (Maintenance Procedure Reports) to be used when performing routine main- tenance. The Routine Maintenance Check Lists consists of the following items: Maintenance Procedure Report C.O. Trunk/Tie Line Register/Sender Trunk (RST) Digital Conference Function Speech Path for each PIM, and Ringing Generator Unit Attendant/Desk Console
NDA-24238 CHAPTER 7 Page 511 Revision 3.0 ROUTINE MAINTENANCE PROCEDURE USER NAMESIGNATURE OF SUPERVISORWORK TIME (FROM - ) Name of User (Company) Date: Maintenance ClassificationRoutine/Non- routine Control No. Maintenance Company Name of Equipment Room Temperature - °C °F & humidity %Name of Worker Reference SectionItem Detail Check Reference SectionItem Detail Check 2.1Check of Ambient Conditions in the Switch RoomAmbient Temperature2.9Trunk RGU Check SND Trunk Relative humidity DCF Function 2.2Alarm Check TOPU Tone 2.3MAT/Printer Check MAT MAT Printer2.10ATTCON Check Ringing Signal 2.4Collection of System MessagesRelated to Fault2.11System Check Result of Routine DiagnosisCPU 2.5Display of Locked- out StationLocked out StationsTSW 2.6Fan Unit Check PM 2.7Alarm Tests TOPU 2.8Main Power System CheckRectifier Battery 2.9Trunk RGU Check C.O. Trunk Tie Trunk ORT IRT Condition And Cause Procedure and Parts Used
CHAPTER 7 NDA-24238 Page 512 Revision 3.0 ROUTINE MAINTENANCE PROCEDURE C.O. Trunk/Tie Line TEST TYPE TEST ITEM CONNECTION DIAGRAM C.O. Trunk/Tie Line Speech Path Test Set up a speech path test by seizing a trunk using the Station or ATTCON/DESKCON connection test diagrammed to the right. Connection Test-Station Connection Test-ATTCON/DESKCON C.O. Trunk/Tie Line NAME OF TRUNK ROUTEACCESS NUMBERROUTE NUMBERTRUNK NUMBERCHECK REMARKS LCTRK C.O./Tie Line ATITRK C.O./Tie Line ATTCON/ DESKCON
NDA-24238 CHAPTER 7 Page 513 Revision 3.0 ROUTINE MAINTENANCE PROCEDURE Register/Sender Trunk (RST) TEST TYPE TEST ITEM CONNECTION DIAGRAM ORT Function Perform the test by specifying an ORT using the Connection Test-Station. Confirm that [6-I] system message displays as a result of the test.DP/PB SENDER Function Perform the test by specifying an ORT using the Connection Test-Station. Confirm that [6-I] system message displays as a result of the test. LC ORT LC~ SND ORT