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Fujitsu FLM 150 ADM Maintenance And Trouble Clearing

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Table of Contents
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Alarm/Status Identification
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Alarm and Status Messages
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Trouble Analysis Procedures
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Overview
Table of Contents
FLM 150 ADM
Practice FJTU-320-515-480
MAINTENANCE AND TROUBLE CLEARING
ISSUE 9, MAY 1999
FUJITSU NETWORK COMMUNICATIONS, INC.

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  Summary of Contents for Fujitsu FLM 150 ADM

  • Page 1 FLM 150 ADM Practice FJTU-320-515-480 MAINTENANCE AND TROUBLE CLEARING ISSUE 9, MAY 1999 FUJITSU NETWORK COMMUNICATIONS, INC.
  • Page 2 Proprietary Rights Notice FLEXR and FLEXR Plus are registered trademarks of Fujitsu Network Communications, Inc. (FNC). FASTLANE and NETSMART are trademarks of FNC. UNIX is a registered trademark of UNIX System Laboratories, Inc. NMA and CLEI are trademarks of Bell Communications Research, Inc.
  • Page 3 This section lists the reason, location, and description of practice changes. When the changes are extensive, a general statement giving the nature of the revisions is provided. FLM 150 ADM Product Release 14S Reason for Document Change: Location of Change...
  • Page 5 Important Observe all warnings in the text or on equipment labels regarding high-voltage or high- temperature conditions. The following warnings and figures apply to most Fujitsu products. Plug-In Unit Warnings Many plug-in units are stamped with anti-electrostatic markings (see figures at left) and require special handling and storage. The following precautions should be strictly observed to avoid damage from electrostatic discharge (ESD).

  • Page 7: Table Of Contents

    Maintenance and Trouble Clearing FJTU-320-515-480 Table of Contents Page 1 Maintaining Equipment Alarm/Status Identification ........480.1-1 Message Parameter Interpretation .
  • Page 8 Maintenance and Trouble Clearing FJTU-320-515-480 Page 3.17 CLEI-TEMP ..........480.3-14 3.18 CPY Conditions .
  • Page 9 Maintenance and Trouble Clearing FJTU-320-515-480 Page 3.50 MANSW ........... 480.3-30 3.51 MISMOUNT.
  • Page 10 Maintenance and Trouble Clearing FJTU-320-515-480 Page 4 Replacing Units Overview ........... 480.4-1 Replacing the Power (PW1A) Unit .

  • Page 11: Maintaining Equipment

    Fujitsu also recommends that operations and maintenance personnel keep records of all alarm and status indications and the steps taken to clear them. A sample of the type of document that can be used with the FLM 150 ADM is contained in Appendix A, Trouble Analysis Log.
  • Page 12 Press CTRL + X (ACS LED lights on the SV1A unit). Session Press CTRL + X (Welcome screen). Logon Press 3 for TL1. Click OK (Port Set-Up). Enter System ID: FUJITSU ACT-USER:TID:UID:CTAG::PID; Enter User Name: ROOT TID = FUJITSU Enter Password: ROOT UID = ROOT Click OK.
  • Page 13 When no craft interface or OSS is logged on a node, autonomous messages are sent only to the AO buffer. (Before Release 10 of the FLM 150 ADM, autonomous messages were neither generated nor stored if no one was logged on the node.) FLEXR 7.71...
  • Page 14 Conditions, to correct the trouble condition. Did the alarm or status condition clear? If Yes: If No: Record the time in the Time Cleared column of Call Fujitsu at 1-800-USE-FTAC your form and continue with Step 10. (1-800-873-3822). Retrieve all current conditions. Step 10 FLEXR 7.71...
  • Page 15 Have all alarm conditions in the system cleared? If Yes: If No: Go to Step 12. Call Fujitsu at 1-800-USE-FTAC (1-800-873-3822). Compare the current alarms to those listed in the trouble log. List the time in the Step 12 Time Cleared column next to any conditions that have cleared, and add any additional alarm/status conditions to the list.

  • Page 16: Message Parameter Interpretation

    1.2.1 Interpreting Messages Autonomous messages are reported by the FLM 150 ADM to the craft terminal and/or the OSS computer display. They are embedded in the equipment firmware and have the REPT prefix. The REPT messages are automatically displayed when an event is triggered, provided the condition is not provisioned as NR (no report) or its message category is not currently inhibited.
  • Page 17 TID DATE TIME ALMCDE ATAG REPT ALM AIDTYPE “AID:NTFCNCDE,CONDTYPE, SRVEFF,,,LOCN,DIRN,,,:\”COND DESCR\”” Example: FUJITSU 95-12-23 20:43:44 000003 REPT ALM EQPT "TS1A-W:CR,RMVD,SA,,,NEND,NA,,,: \"Unit is removed\"" The RTRV-AO command retrieves an alarm from the AO buffer, which will indicate the time at which it was generated. If the operator wants to know if the condition still exists, the RTRV-ALM-ALL or RTRV-COND-ALL command can be used, which will result in a real-time report.
  • Page 18 RTRV-AO and an example follow. TID DATE TIME ALMCDE ATAG REPT ALM ENV “AID:NTFCNCDE,ALMTYPE,,,\"ALMMSG\"" Example: FUJITSU 95-11-15 20:10:10 000010 REPT ALM ENV "1:MJ, AIRCOND,,,\"Air Conditioning Failure\"" The format for an environmental report retrieved using RTRV-ALM-ENV and an example follow.
  • Page 19 RTRV-AO. TID DATE TIME ATAG REPT EVT AIDTYPE AID:CONDTYPE,CONDEFF,,,LOCN,DIRN,: ,,\"CONDDESCR\" Example: FUJITSU 93-02-22 06:10:01 000100 REPT EVT T3 3:ACTLPBKT,CL,,,NEND,NA,:,,\ "Terminal loopback in active position\" The following format and example are for an event report retrieved using RTRV- ALM-ALL or RTRV-COND-ALL.
  • Page 20 The following format and example are for a PM report retrieved using RTRV-AO. TID DATE TIME ATAG REPT PM AIDTYPE “AID:MONTYPE,MONVAL,,LOCN,DIRN,TMPER, MONDAT,MONTM” Example: FUJITSU 95-09-20 12:15:02 102 REPT PM EC1 "1-1:CVL,73,,NEND,TRMT,15-MIN, 06-30,10-15" The following format and example are for a PM report retrieved using RTRV-PM-ALL.
  • Page 21 Maintenance and Trouble Clearing 1.2: Message Parameter Interpretation FJTU-320-515-480 1.2.4 Report Parameters Table 1-1 defines each of the report parameters. Table 1-1: Autonomous and Retrieved Report Parameters Parameter Definition The values in the Access Identifier field identify the exact address of the equipment or the facility (channel) reporting the status.
  • Page 22 Maintenance and Trouble Clearing 1.2: Message Parameter Interpretation FJTU-320-515-480 Table 1-1: Autonomous and Retrieved Report Parameters (cont’d) Parameter Definition CONDEFF Condition Effect indicates if the reported event results in a standing condition, a transient condition, or the clearing of a previously reported standing condition.
  • Page 23 Maintenance and Trouble Clearing 1.2: Message Parameter Interpretation FJTU-320-515-480 Table 1-1: Autonomous and Retrieved Report Parameters (cont’d) Parameter Definition NTFCNCDE Notification Code (factory default value). The value in this field indicates the provisioned severity level of the condition being reported. The values for NTFCNCDE are given as follows: •...

  • Page 24: Maintenance Philosophy

    1.3: Maintenance Philosophy FJTU-320-515-480 Maintenance Philosophy The FLM 150 ADM multiplexes a maximum of 84 DS1 or three DS3 electrical signals into a SONET (Synchronous Optical Network) OC-3 optical signal. During normal operation, the system should require no maintenance on the part of the technician.

  • Page 25: Alarm And Status Messages

    AO buffer if there is no logon to the craft or OSS interfaces. With Release 10 and later for the FLM 150 ADM, all autonomous messages are stored in the AO buffer, regardless of the logon status of the craft and OSS interfaces.

  • Page 26: Trouble Analysis Procedures

    • Only one failure exists for the indication. The local FLM 150 ADM displays the equipment number of any remote alarm source on a 7-segment indicator on the front panel of the MP1A unit. The local AW1A unit provides critical (CR), major (MJ), minor (MN), and abnormal (ABN) alarm indications on the front panel for both the local and the remote site.

  • Page 27: Repairing Defective Units

    1.6: Repairing Defective Units FJTU-320-515-480 Repairing Defective Units Fujitsu does not recommend field repair of defective units. Equipment failures should be corrected by replacing the defective unit with a working spare. Return defective units to a Fujitsu field service office.

  • Page 28: Front And Rear Views

    Maintenance and Trouble Clearing 1.7: Front and Rear Views FJTU-320-515-480 Front and Rear Views Figure 1-1 is a front view of the FLM 150 ADM shelf showing the plug-in units and their associated equipment slots. FLM 150 ADM FC9612PW11 FC9612PW11...
  • Page 29 Maintenance and Trouble Clearing 1.7: Front and Rear Views FJTU-320-515-480 Figure 1-2 is a rear view of the FLM 150 ADM shelf backplane showing cable connectors and terminals. OW/E2A1 H.K.2 S OUT CN21 S OUT CN20 S OUT CN19 OSS1...
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  • Page 31: Plug-In Unit Front-Panel Devices

    Introduction This section lists the condition types shown by the LEDs on the plug-in units. Tables 2-1 through 2-19 show the LED indications for the FLM 150 ADM shelf (with the exception of LEDs relating to FASTLANE ™plug-in units). For simplicity, the LED colors caused by the lamp test function are not presented in the table.

  • Page 32: Led Descriptions

    Maintenance and Trouble Clearing 2.2: LED Descriptions FJTU-320-515-480 LED Descriptions Table 2-1: AW1A LED Descriptions Color Meaning Note: The LEDs on these units are also used to indicate alarm information at other sites. Verify that the local shelf is the source of the alarm by checking that the NE ACT LED is lit red and the FE ACT LED is off. To select the local shelf, repeatedly press the FE SEL button on the MP1A unit until a decimal shows in the EQPT NO.
  • Page 33 Maintenance and Trouble Clearing 2.2: LED Descriptions FJTU-320-515-480 Table 2-2: EC1A LED Descriptions Color Meaning FAIL An internal failure. Blinking red Unit MISMOUNT: the system is configured for a different mode, or the mounted unit is not intended for use in the current configuration. Normal operation (in service).
  • Page 34 Maintenance and Trouble Clearing 2.2: LED Descriptions FJTU-320-515-480 Table 2-4: HC1A-6Lx1 LED Descriptions Color Meaning FAIL An internal failure or an incoming signal failure (such as an LOS or LOF) or interconnect cables may be disconnected. Blinking red Unit MISMOUNT: the system is configured for a different mode, or the mounted unit is not intended for use in the current configuration.
  • Page 35 Maintenance and Trouble Clearing 2.2: LED Descriptions FJTU-320-515-480 Table 2-6: HS1A-AD1/-AD2 LED Descriptions Color Meaning FAIL An internal failure. Blinking red Unit MISMOUNT: the system is configured for a different mode, or the mounted unit is not intended for use in the current configuration. Normal operation (in service).
  • Page 36 Maintenance and Trouble Clearing 2.2: LED Descriptions FJTU-320-515-480 Table 2-7: LC1A-D1/-D1E/-D1E2 LED Descriptions Color Meaning FAIL/SVCE An internal failure, or the internal clock or building integrated timing supply (BITS) output is down. Blinking red Unit MISMOUNT: the system is configured for a different mode, or the mounted unit is not intended for use in the current configuration.
  • Page 37 Maintenance and Trouble Clearing 2.2: LED Descriptions FJTU-320-515-480 Table 2-10: MC1A-D3/-D3A2 LED Descriptions Color Meaning FAIL/SVCE An internal failure, or the internal clock or BITS output is down. Blinking red Unit MISMOUNT: the system is configured for a different mode, or the mounted unit is not intended for use in the current configuration.
  • Page 38 Maintenance and Trouble Clearing 2.2: LED Descriptions FJTU-320-515-480 Table 2-12: MC1A-STS1/-ST1P LED Descriptions Color Meaning FAIL/SVCE An internal failure, or the internal clock or BITS output is down. Blinking red Unit MISMOUNT: the system is configured for a different mode, or the mounted unit is not intended for use in the current configuration.
  • Page 39 Maintenance and Trouble Clearing 2.2: LED Descriptions FJTU-320-515-480 Table 2-14: MP1A LED Descriptions Color Meaning FAIL An internal failure of the central processing unit (CPU). Blinking red Unit MISMOUNT: the system is configured for a different mode, or the mounted unit is not intended for use in the current configuration. Normal operation (in service).
  • Page 40 Maintenance and Trouble Clearing 2.2: LED Descriptions FJTU-320-515-480 Table 2-17: TCA LED Descriptions Color Meaning FAIL/SVCE An internal failure, or the internal clock or BITS output is down. Green Normal operation (in service). Indicates standby or out of service. LINE The incoming signal has degraded or failed.
  • Page 41 Maintenance and Trouble Clearing 2.2: LED Descriptions FJTU-320-515-480 Table 2-19: TS1A LED Descriptions Color Meaning FAIL/SVCE An internal failure, or the internal clock or BITS output is down. Blinking red Unit MISMOUNT: the system is configured for a different mode, or the mismounted unit is not used in this configuration.
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  • Page 43: Responding To Alarms And Conditions

    Condition Code Responses 3.1.1 Summary Use this section to respond to conditions reported by the FLM 150 ADM system (with the exception of FASTLANE ™applications). When the condition code indicates an alarm event, this section provides trouble-clearing information. Transient and standing conditions are also indicated by condition codes and in some cases are associated with an alarm condition.
  • Page 44 3.1: Condition Code Responses FJTU-320-515-480 3.1.2 Condition Code Types There are three types of conditions that are reported by the FLM 150 ADM— alarm conditions, transient conditions, and standing conditions. These conditions are defined as follows: • Alarm conditions trigger autonomous messages to notify maintenance and operational personnel of failure or fault conditions that require immediate response.
  • Page 45 Maintenance and Trouble Clearing 3.1: Condition Code Responses FJTU-320-515-480 3.1.3 Other Resources For trouble-clearing task details, refer to the following sections: • To replace a unit: Refer to Section 4, in this practice, or the Table of Contents, located in the front of this practice, to select the appropriate unit replacement procedure.

  • Page 46: Procedure

    Step 3 If problems persist after a reasonable effort, do not hesitate to call Fujitsu Technical Support at 1-800-USE-FTAC (1-800-873-3822). In Tables 3-1 through 3-77, the purpose of the column labeled AID Type is to guide the user to the correct row, based on the AID type found in first line of the...

  • Page 47: Actlpbkf

    Maintenance and Trouble Clearing 3.3: ACTLPBKF FJTU-320-515-480 ACTLPBKF The NE reporting the condition has a loopback control operated to provide a near-end facility loopback for testing at the same site. Table 3-1: ACTLPBFK (Facility Loopback Activated)—Standing Condition Direction Probable Cause Suggested Corrective Action Type OPR-LPBK-EC1 has been...

  • Page 48: Actlpbkt

    Maintenance and Trouble Clearing 3.4: ACTLPBKT FJTU-320-515-480 ACTLPBKT The NE reporting the condition has a loopback control operated to provide a terminal loopback that loops the selected channel back to the far end for testing at that site. Table 3-2: ACTLPBKT (Terminal Loopback Activated)—Standing Condition Direction Probable Cause Suggested Corrective Action...
  • Page 49 Maintenance and Trouble Clearing 3.5: AIS FJTU-320-515-480 Table 3-3: AIS (Alarm Indication Signal)—Alarm Event (cont’d) Direction Probable Cause Suggested Corrective Action Type OVTG The locally received optical virtual Retrieve the alarms at the remote FLM 6 TRMT tributary group (OVTG) signal site.

  • Page 50: Al1Pls

    Maintenance and Trouble Clearing 3.6: AL1PLS FJTU-320-515-480 AL1PLS Table 3-4: AL1PLS (All-Ones Pulse Generated)—Standing Condition Direction Probable Cause Suggested Corrective Action Type The internal all-ones test signal Check to see if testing is complete before has been connected to the external disconnecting the test signal.

  • Page 51: B1Err

    Maintenance and Trouble Clearing 3.8: B1ERR FJTU-320-515-480 B1ERR Table 3-6: B1ERR (Error Data Generated)—Standing Condition Direction Probable Cause Suggested Corrective Action Type OC-3 TRMT/RCV CONN-TSTSIG-OC3 has been • Verify that the facility testing is executed. complete. • Execute the DISC-TSTSIG-OC3 command.

  • Page 52: B3Err

    Maintenance and Trouble Clearing 3.10: B3ERR FJTU-320-515-480 3.10 B3ERR Table 3-8: B3ERR (B3 Error Data Generated)—Standing Condition Direction Probable Cause Suggested Corrective Action Type STS1 TRMT/RCV CONN-TSTSIG-STS1 • Verify that the facility testing is complete. has been executed. • Execute the DISC-TSTSIG-STS1 command. 3.11 BERSDL and BERSFL Table 3-9: BERSDL and BERSFL (Bit Error Rate Signal Degrade/Fail-Line)—Alarm Event...
  • Page 53 Maintenance and Trouble Clearing 3.11: BERSDL and BERSFL FJTU-320-515-480 These BERSDL and BERSFL alarm messages indicate line-level problems that may only exist between line terminating equipment (LTE). Figure 3-1 shows how to determine exactly where the line BER problem is located. Notes 1 and 2 (below the figure and referenced within the circles) give examples of how to determine problem locations.

  • Page 54: Bersdp And Bersfp

    Maintenance and Trouble Clearing 3.12: BERSDP and BERSFP FJTU-320-515-480 3.12 BERSDP and BERSFP Table 3-10: BERSDP and BERSFP (Bit Error Rate Signal Degrade/Fail-Path)—Alarm Event Direction Probable Cause Suggested Corrective Action Type STS-1 • The STS signal • Examine the network for other path BER demultiplexed and problems and retrieve PM data to find a VT-1...

  • Page 55: Bip2Err

    Maintenance and Trouble Clearing 3.13: BIP2ERR FJTU-320-515-480 3.13 BIP2ERR Table 3-11: BIP2ERR (BIP2 Error Data Generated)—Standing Condition Direction Probable Cause Suggested Corrective Action Type TRMT CONN-TSTSIG-VT1 has • Verify that the facility testing is complete. been executed. • Execute the DISC-TSTSIG-VT1 command. 3.14 CANVAL Table 3-12: CANVAL (CANC-VALTM Command Acceptable)—Transient Condition...

  • Page 56: Clei-Temp

    Maintenance and Trouble Clearing 3.17: CLEI-TEMP FJTU-320-515-480 3.17 CLEI-TEMP Table 3-15: CLEI-TEMP (Laser Temperature Increased)—Standing Condition Direction Probable Cause Suggested Corrective Action Type EQPT • The temperature of the • Check site ambient temperature and/or laser transmitter has cooling system. exceeded a preset threshold.

  • Page 57: Ctneqpt

    Maintenance and Trouble Clearing 3.19: CTNEQPT FJTU-320-515-480 3.19 CTNEQPT Table 3-17: CTNEQPT (Ribbon Cable Disconnect)—Alarm Event Direction Probable Cause Suggested Corrective Action Type EQPT The circuit between the two • Verify good connections between the HC1A-6Lx1 units has failed. HC1A-6Lx1 units (refer to Section 5.1, Handling Fiber Cables, and Section 5.2, Cleaning, Connecting, and Disconnecting the Optical Connectors).
  • Page 58 Maintenance and Trouble Clearing 3.20: DCCFAIL FJTU-320-515-480 Table 3-18: DCCFAIL (Data Communications Connect Failure)—Alarm Event (cont’d) Direction Probable Cause Suggested Corrective Action Type TRMT/RCV The OC-3 SDCC has • Check the fiber link and perform trouble analysis failed. procedures as necessary. •...

  • Page 59: Ecrestart

    Maintenance and Trouble Clearing 3.21: ECRESTART FJTU-320-515-480 3.21 ECRESTART Table 3-19: ECRESTART (EC Software Restart)—Transient Condition Direction Probable Cause Suggested Corrective Action Type EQPT The EC software has been restarted. No corrective action required. 3.22 FALLBK Table 3-20: FALLBK (Fullback)—Transient Condition Direction Probable Cause Suggested Corrective Action...

  • Page 60: Feais

    Maintenance and Trouble Clearing 3.24: FEAIS FJTU-320-515-480 3.24 FEAIS Table 3-22: FEAIS (Far-End Alarm Indication Signal)—Alarm Event Direction Probable Cause Suggested Corrective Action Type Alarm indication signal Retrieve the alarm and clear the detected from FEAC DL. trouble. TRMT (far-end alarm and control data link).

  • Page 61: Feflt-T1M

    Maintenance and Trouble Clearing 3.27: FEFLT-T1M FJTU-320-515-480 3.27 FEFLT-T1M Table 3-25: FEFLT-T1M (Far-End Multiple DS1 Loss of Signal)—Alarm Event Direction Probable Cause Suggested Corrective Action Type Multiple DS1 loss of signal Retrieve the alarm and clear the detected from FEAC DL. trouble.

  • Page 62: Feisd

    Maintenance and Trouble Clearing 3.30: FEISD FJTU-320-515-480 3.30 FEISD Table 3-28: FEISD (Far-End DS3 Idle Signal)—Alarm Event Direction Probable Cause Suggested Corrective Action Type DS3 idle signal detected from Retrieve the alarm and clear the FEAC DL. trouble. TRMT 150 ADM OC-3/ OC-12 ADDED...

  • Page 63: Fileconfig-Act

    Maintenance and Trouble Clearing 3.33: FILECONFIG–ACT FJTU-320-515-480 3.33 FILECONFIG–ACT Table 3-31: FILECONFIG–ACT (File Configuration-Active)—Alarm Event Direction Probable Cause Suggested Corrective Action Type A mismatch failure of the file • Make sure the program files are correct. configuration among active This condition could occur when the NE is nonvolatile memories (NVMs).

  • Page 64: Hmia

    Maintenance and Trouble Clearing 3.36: HMIA FJTU-320-515-480 3.36 HMIA Table 3-34: HMIA (Hardware Mismatch Alarm Indication)—Transient Condition Direction Probable Cause Suggested Corrective Action Type EQPT Maladjusted to EC1A hardware, Correct the connection. mismatch alarm indication. 3.37 INIT-SYS-FAIL Table 3-35: INIT-SYS-FAIL (Initialization System Failure)—Transient Condition Direction Probable Cause Suggested Corrective Action...

  • Page 65: Ipreachable

    Maintenance and Trouble Clearing 3.40: IPREACHABLE FJTU-320-515-480 3.40 IPREACHABLE Table 3-38: IPREACHABLE (IP = xxx.xxx.xxx.xxx Reachable)—Transient Condition AID Type Direction Probable Cause Suggested Corrective Action IP address was reached successfully. 3.41 Table 3-39: ISD (Idle Signal Detected)—Alarm Event Direction Probable Cause Suggested Corrective Action Type DS3 idle signal detected...

  • Page 66: Lockin

    Maintenance and Trouble Clearing 3.43: LOCKIN FJTU-320-515-480 3.43 LOCKIN Table 3-41: LOCKIN—Alarm Event Direction Probable Cause Suggested Corrective Action Type Lockin has • Check the local receive and upstream transmit optical occurred on the levels to verify that no optical unit has failed or been OVTG high-speed OC-3 removed.

  • Page 67: Lof

    Maintenance and Trouble Clearing 3.45: LOF FJTU-320-515-480 3.45 Table 3-43: LOF (Loss of Frame)—Alarm Event Probable Direction Suggested Corrective Action Type Cause TRMT/RCV A framing • Inspect all aspects of the STS-1 link. problem on the • Check the remote sites for unit removal or failure. Refer incoming STS-1 to Section 4, Replacing Units, for the appropriate unit signal...
  • Page 68 Maintenance and Trouble Clearing 3.45: LOF FJTU-320-515-480 Table 3-43: LOF (Loss of Frame)—Alarm Event (cont’d) Probable Direction Suggested Corrective Action Type Cause OVTG A framing • Check the OVTG link. TRMT problem on the • Check the remote FLM 6 for OVTG unit removal or 150 ADM incoming failure.

  • Page 69: Lom

    Maintenance and Trouble Clearing 3.46: LOM FJTU-320-515-480 3.46 Table 3-44: LOM (Loss of Message)—Transient Condition Direction Probable Cause Suggested Corrective Action Type SYNCIN A loss of synchronization • Verify that synchronous status messaging is message is detected. properly configured. • Make sure a TCA-ENH unit is installed. •...

  • Page 70: Los

    Maintenance and Trouble Clearing 3.48: LOS FJTU-320-515-480 Table 3-45: LOP (Loss of Pointer)—Alarm Condition (cont’d) Direction Probable Cause Suggested Corrective Action Type STS1 TRMT/RCV An STS-1 loss of Verify the timing source at the upstream sites. pointer; indicates that a timing failure has occurred upstream...
  • Page 71 Maintenance and Trouble Clearing 3.48: LOS FJTU-320-515-480 Table 3-46: LOS (Loss of Signal)—Alarm Event (cont’d) Direction Probable Cause Suggested Corrective Action Type OC12 An OC-12 loss of • Check the upstream ADM for optical channel unit signal failure/removal. 150 ADM •...

  • Page 72: Man

    Maintenance and Trouble Clearing 3.49: MAN FJTU-320-515-480 3.49 Table 3-47: MAN (Manually Caused Abnormal Condition)—Alarm Event Direction Probable Cause Suggested Corrective Action Type The system is in an operator- Corrective action is not necessarily required. The caused abnormal condition manual condition will automatically clear when (forced or lockin protection the operator removes the forced switch, loopback, switching, or loopback).

  • Page 73: Mismount

    Maintenance and Trouble Clearing 3.51: MISMOUNT FJTU-320-515-480 Table 3-48: MANSW (Manual Switch of Working/Protect to Protect/Working)— Standing Condition (cont’d) Direction Probable Cause Suggested Corrective Action Type STS1 OPR-PROTNSW-STS1: • Verify that the cause of operating the forced TID:AIDs:CTAG::MAN; switch no longer exists or that authorization to has been executed for release the manual switch is secured.

  • Page 74: Msgchg

    Maintenance and Trouble Clearing 3.52: MSGCHG FJTU-320-515-480 3.52 MSGCHG These messages indicate a change in the quality level of the synchronous status message: • MSGCHGRES-PRS/-STU/-ST2/-ST3/-SIC/-ST4/-DUS/-FAIL/-NA • MSGCHGPRS-STU/-ST2/-ST3/-SIC/-ST4/-DUS/-RES/-FAIL/-NA • MSGCHGSTU-PRS/-ST3/-ST3/-SIC/-ST4/-DUS/-RES/-FAIL/-NA • MSGCHGST2-PRS/-STU/-ST3/-SIC/-ST4/-DUS/-RES/-FAIL/-NA • MSGCHGST3-PRS/-STU/-ST2/-SIC/-ST4/-DUS/-RES/-FAIL/-NA • MSGCHGSIC-PRS/-STU/-ST2/-ST3/-ST4/-DUS/-RES/-FAIL/-NA • MSGCHGST4-PRS/-STU/-ST2/-ST3/-SIC/-DUS/-RES/-FAIL/-NA • MSGCHGDUS-PRS/-STU/-ST2/-ST3/-SIC/-ST4/-RES/-FAIL/-NA • MSGCHGFAIL-PRS/-STU/-ST2/-ST3/-SIC/-ST4/-DUS/-RES/-NA •...

  • Page 75: Pingtimeout

    Maintenance and Trouble Clearing 3.54: PINGTIMEOUT FJTU-320-515-480 3.54 PINGTIMEOUT Table 3-52: PINGTIMEOUT (Ping Request Timed Out)—Transient Condition AID Type Direction Probable Cause Suggested Corrective Action No IP connection to Verify LCN physical connection from destination node or source to destination node. Verify IP improper IP provisioning at destination node.

  • Page 76: Rai

    Maintenance and Trouble Clearing 3.56: RAI FJTU-320-515-480 3.56 Table 3-54: RAI (Remote Alarm Indication)—Alarm Event Direction Probable Cause Suggested Corrective Action Type The tributary equipment has • Verify that the connections from the NE to TRMT detected a defective incoming the tributary equipment are mechanically 150 ADM DS2 (AIS, LOF, or LOS) and...
  • Page 77 Maintenance and Trouble Clearing 3.57: RFI FJTU-320-515-480 Table 3-55: RFI (Remote Failure Indication)—Alarm Event (cont’d) Direction Probable Cause Suggested Corrective Action Type TRMT/RCV • TRMT: RFI detected on • Check the output of the local optical transmit the signal received from unit for level degradation or dirty optical the tributary ADM.

  • Page 78: Rfi-Con

    Maintenance and Trouble Clearing 3.58: RFI-CON FJTU-320-515-480 3.58 RFI-CON Table 3-56: RFI-CON (Remote Failure Indicator-Connectivity)—Alarm Event AID Type Direction Probable Cause Suggested Corrective Action STS1 RFI-connectivity Verify that connections are secure. defect received 150 ADM OC-3/ OC-12 DROPPED SIGNAL 3.59 RFI-PLD Table 3-57: RFI-PLD (Remote Failure Indicator-Payload Defect)—Alarm Event AID Type...

  • Page 79: Rmvd

    Maintenance and Trouble Clearing 3.61: RMVD FJTU-320-515-480 3.61 RMVD Table 3-59: RMVD (Plug-In Unit Removed)—Alarm Event Direction Probable Cause Suggested Corrective Action Type EQPT The plug-in unit is not • Reseat the unit or replace it. properly seated, or it •...

  • Page 80: Syncd

    Maintenance and Trouble Clearing 3.63: SYNCD FJTU-320-515-480 3.63 SYNCD Table 3-61: SYNCD (Synchronization Message Degradation)—Alarm Event Direction Probable Cause Suggested Corrective Action Type SYNCIN Synchronization • Replace the TCA-ENH unit. message degradation is • Check the upstream ADM for optical channel detected.

  • Page 81: T-Lbcn

    Direction Probable Cause Suggested Corrective Action Type • Intermittent • The FLM 150 ADM provides a lockin function to prevent digital errors successive switching of the unit and line caused by OVTG intermittent digital errors. Lockin occurs automatically if • Loss of DS3, the unit switches four times in a 15-minute period.

  • Page 82: Tarpecho

    Maintenance and Trouble Clearing 3.68: TARPECHO FJTU-320-515-480 3.68 TARPECHO TID and network address collection time period completed. Table 3-66: TARPECHO (Tarp Echo Function)—Transient Condition Direction Probable Cause Suggested Corrective Action Type OPR-TEF response None required TID expected behavior = 7 to 20 ASCII characters—Deviation = TID is none or 40 hex characters. NET expected behavior = 40 hex characters—Deviation = NET address is none or 7 to 20 ASCII characters.

  • Page 83: Threshold Violations-Line

    • Faulty input • Verify the proper cable connection between SESL cable. the FLM 150 ADM and the DSX. OC3 and EC1 • Faulty signal • Test subscriber input signal parameters. from subscriber. • Replace the suspect MC1A unit if the PM •...
  • Page 84 Maintenance and Trouble Clearing 3.70: Threshold Violations-Line FJTU-320-515-480 Table 3-68: Threshold Violations-Line (T-CVL, T-ESL, T-SESL, T-UASL)— Transient Conditions (cont’d) AID Type and Direction Probable Cause Suggested Corrective Action MONTYPE RCV/ • Incoming • Check the far end for incoming (TRMT) T3 TRMT interface signal alarms or threshold crossings or PM register...

  • Page 85: Threshold Violations-Path

    Maintenance and Trouble Clearing 3.71: Threshold Violations–Path FJTU-320-515-480 3.71 Threshold Violations–Path • CVP: Coding Violation count–Path • ESP: Errored Second count–Path • SESP: Severely Errored Second count–Path • UASP: Unavailable Second count–Path • SASP: Each SASP register stores the count of 1-second intervals containing one or more SEF defects or one or more AIS defects for a specific DS3 path Table 3-69: Threshold Violations-Path...
  • Page 86 Maintenance and Trouble Clearing 3.71: Threshold Violations–Path FJTU-320-515-480 Table 3-69: Threshold Violations-Path (T-CVP, T-ESP, T-SESP, T-UASP, T-SASP)—Transient Conditions (cont’d) AID Type Direction Probable Cause Suggested Corrective Action MONTYPE • Incoming • Check the far end for incoming (TRMT) T3 interface signal alarms or threshold crossings or PM register at far end has a counts (see above).

  • Page 87: Threshold Violations-Section

    • Check and clean all fiber-optic connectors in an AIS. the optic path between the tributary SESS • Optical path equipment and the FLM 150 ADM shelf. SEFSS problems between • Check optical output level at tributary far end and near transmitter.

  • Page 88: Tmgoutpsw

    Maintenance and Trouble Clearing 3.73: TMGOUTPSW FJTU-320-515-480 3.73 TMGOUTPSW TMGOUTPSWPRS/STU/ST2/ST3/SIC/ST4/RES/FAIL/NA Table 3-71: TMGOUPSW (Primary DS1 Timing Reference Output Switch)—Transient Condition Direction Probable Cause Suggested Corrective Action Type SYNCIN A derived DS1 primary • The TCA-ENH unit is defective. timing reference switch is •...

  • Page 89: Tmgsw

    Maintenance and Trouble Clearing 3.75: TMGSW FJTU-320-515-480 3.75 TMGSW These messages indicate a switch in the timing reference: TMGSW/PRS/STU/ST2/ST3/SIC/ST4/RES/FAIL/NA Table 3-73: TMGSW (Timing Reference Switch)—Transient Condition Direction Probable Cause Suggested Corrective Action Type SYNCIN A system timing reference • The TCA-ENH unit is defective. is detected.

  • Page 90: Uneq

    Probable Cause Suggested Corrective Action Type EQPT • The restoration of No action required. The FLM 150 ADM has two modes signal to Working of protective switching, revertive and nonrevertive. In unit after an LOS or nonrevertive switching, switching is performed...

  • Page 91: Wkswpr

    3.79: WKSWPR FJTU-320-515-480 3.79 WKSWPR Condition code that reports the switching from the Working unit to the Protect unit in the FLM 150 ADM. Table 3-77: WKSWPR (Working Facility/Equipment Switched to Protection)— Transient Condition Direction Probable Cause Suggested Corrective Action...
  • Page 92 This page intentionally left blank.

  • Page 93: Replacing Units

    Replacing Units Overview This section list s the procedures required to replace the FLM 150 ADM plug-in units (with the exception of units and cards used in FASTLANE applications). For information relating to replacing FASTLANE ™units and cards, refer to the FASTLANE I practice, FJTU-320-515-110, and FASTLANE II practice, FJTU-320-515-111.
  • Page 94 If Yes: If No: Go to Step 5. • If the PWR LED is not lit, go to Step 3. • If the PWR LED is red, call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Step 3 Check the fuse on the Fuse and Alarm Panel.
  • Page 95 Devices). Is the PWR LED green? If Yes: If No: Go to Step 7. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Connect the DMM leads to the MAIN and G test jacks on the unit. Is the MAIN Step 7 reading between –42 and –56 V dc?
  • Page 96 Maintenance and Trouble Clearing 4.2: Replacing the Power (PW1A) Unit FJTU-320-515-480 FC9612PW11 +5.4V -5.6V MAIN PW1A Figure 4-1: PW1A Unit Front Panel Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.4-4...

  • Page 97: Replacing The Microprocessor (Mp1A) Unit

    Maintenance and Trouble Clearing 4.3: Replacing the Microprocessor (MP1A) Unit FJTU-320-515-480 Replacing the Microprocessor (MP1A) Unit 4.3.1 Overview This procedure lists the steps required to replace a failed MP1A Microprocessor unit. Refer to Section 2, Plug-In Unit Front-Panel Devices, in this practice for descriptions of LEDs associated with each plug-in unit and other front-panel devices.
  • Page 98 Press the CPU RESET button. Wait for system reset. Is the alarm cleared? If Yes: If No: Complete your fault-reporting Call the Fujitsu Technical Assistance Center at documentation. 1-800-USE-FTAC (1-800-873-3822) for assistance. Note: The Hardware Data Record form is provided in Appendix A of the Plug-In Unit Installation practice, FJTU-320-515-220.
  • Page 99 Maintenance and Trouble Clearing 4.3: Replacing the Microprocessor (MP1A) Unit FJTU-320-515-480 FC9612MPB1 FAIL EQPT NO. RESET MP1A E.N. (1-9) Figure 4-2: MP1A Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.4-7...
  • Page 100 Maintenance and Trouble Clearing 4.3: Replacing the Microprocessor (MP1A) Unit FJTU-320-515-480 FC9612MP21 FAIL EQPT . NO. RESET EQPT NO. MP1A-V2 (1-9) Figure 4-3: MP1A-V2/-ADL Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol.
  • Page 101 Maintenance and Trouble Clearing 4.3: Replacing the Microprocessor (MP1A) Unit FJTU-320-515-480 FC9612MP31 FAIL EQPT NO. RESET MP1A-V3 E.N. (1–9) Figure 4-4: MP1A-V3/-R11 Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.4-9...

  • Page 102: Replacing The Time-Slot Assignment (Ts1A) Unit

    Maintenance and Trouble Clearing 4.4: Replacing the Time-Slot Assignment (TS1A) FJTU-320-515-480 Unit Replacing the Time-Slot Assignment (TS1A) Unit 4.4.1 Overview This procedure lists the steps required to replace a failed TS1A Time-Slot Assignment unit. Refer to Section 2, Plug-In Unit Front-Panel Devices, in this practice for descriptions of LEDs associated with each plug-in unit, and other front-panel devices.
  • Page 103 Maintenance and Trouble Clearing 4.4: Replacing the Time-Slot Assignment (TS1A) FJTU-320-515-480 Unit 4.4.2 Procedure Step 1 If you have a known-good unit, use it to replace the original unit, or locate another unit and inspect it for damage, debris, and foreign objects. Verify that you have the correct type of TS1A unit for your application: •...
  • Page 104 If Yes: If No: Complete your fault-reporting documentation. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Note: The Hardware Data Record form is provided in Appendix A of the Plug-In Unit Installation practice, FJTU-320-515-220. You have completed this procedure.
  • Page 105 Maintenance and Trouble Clearing 4.4: Replacing the Time-Slot Assignment (TS1A) FJTU-320-515-480 Unit FC9612TSE1 FAIL/ SVCE LINE TS1A-ENH Figure 4-6: TS1A-ENH Unit Front Panel FC9612TSE2 FAIL/ SVCE LINE TS1A-ENH2 Figure 4-7: TS1A-ENH2 Unit Front Panel Issue 9, May 1999 FNC and FNC Customer Use Only Vol.

  • Page 106: Replacing The Alarm (Aw1A) Units

    Maintenance and Trouble Clearing 4.5: Replacing the Alarm (AW1A) Units FJTU-320-515-480 Replacing the Alarm (AW1A) Units 4.5.1 Overview This procedure lists the steps required to replace a failed AW1A Alarm and Orderwire unit. Refer to the Application Engineering practice, FJTU-320-515-120, Appendix C, Hardware Options, for descriptions of plug-in unit hardware option settings.
  • Page 107 Responding to Alarms and Conditions). Does the original problem clear? If Yes: If No: Complete your fault-reporting Call the Fujitsu Technical Assistance documentation. Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Note: The Hardware Data Record form is provided in Appendix A of the Plug-In Unit Installation practice, FJTU-320-515-220.
  • Page 108 Maintenance and Trouble Clearing 4.5: Replacing the Alarm (AW1A) Units FJTU-320-515-480 FC9612AWB1 LAMP TEST NE ACT FE ACT AW1A-BSC PWR FAIL ALM Figure 4-8: AW1A-BSC Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol.
  • Page 109 Maintenance and Trouble Clearing 4.5: Replacing the Alarm (AW1A) Units FJTU-320-515-480 FC9612AWE1 LAMP TEST NE ACT FE ACT CALL AW1A-ENH PWR FAIL ALM Figure 4-9: AW1A-ENH Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol.

  • Page 110: Replacing The Supervisory (Sv1A) Unit

    Maintenance and Trouble Clearing 4.6: Replacing the Supervisory (SV1A) Unit FJTU-320-515-480 Replacing the Supervisory (SV1A) Unit 4.6.1 Overview This procedure lists the steps required to replace a failed SV1A Supervisory unit. Refer to Section 2, Plug-In Unit Front-Panel Devices, in this practice for descriptions of LEDs associated with each plug-in unit, and other front-panel devices.
  • Page 111 Maintenance and Trouble Clearing 4.6: Replacing the Supervisory (SV1A) Unit FJTU-320-515-480 4.6.2 Procedure Step 1 If you have a known-good unit, use it to replace the SV1A unit, or locate another unit and inspect it for damage, debris, and foreign objects. Verify that you have the correct type of SV1A unit for your application: ®...
  • Page 112 Responding to Alarms and Conditions). Does the FAIL LED go off? If Yes: If No: Complete your fault-reporting Call the Fujitsu Technical Assistance documentation. Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Note: The Hardware Data Record form is provided in Appendix A of the Plug-In Unit Installation practice, FJTU-320-515-220.
  • Page 113 Maintenance and Trouble Clearing 4.6: Replacing the Supervisory (SV1A) Unit FJTU-320-515-480 FC9612SVL1 FAIL LINE TERM SV1A-TL1 Figure 4-10: SV1A-TL1 Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.4-21...
  • Page 114 Maintenance and Trouble Clearing 4.6: Replacing the Supervisory (SV1A) Unit FJTU-320-515-480 FC9612SVL2 FAIL LINE TERM SV1A-TL2 SELECT OSS CLOCK Figure 4-11: SV1A-TL2/-TL3/-TL4/- R11 Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol.
  • Page 115 Maintenance and Trouble Clearing 4.6: Replacing the Supervisory (SV1A) Unit FJTU-320-515-480 FC9612SVD1 FAIL LINE SWDL TERM SV1A-TDL1 Figure 4-12: SV1A-TDL1 Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.4-23...
  • Page 116 Maintenance and Trouble Clearing 4.6: Replacing the Supervisory (SV1A) Unit FJTU-320-515-480 FC9612SVB1 FAIL LINE TERM SV1A-TB Figure 4-13: SV1A-TB Unit Front Panel Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.4-24...

  • Page 117: Replacing The Middle-Speed Mux/Demux/Transmux (Mc1A) Unit

    Maintenance and Trouble Clearing 4.7: Replacing the Middle-Speed Mux/Demux/ FJTU-320-515-480 Transmux (MC1A) Unit Replacing the Middle-Speed Mux/Demux/Transmux (MC1A) Unit 4.7.1 Overview This procedure lists the steps required to replace a failed MC1A Middle-Speed Channel Mux/Demux/Transmux unit. Refer to the Application Engineering practice, FJTU-320-515-120, Appendix C, Hardware Options, for descriptions of plug-in unit hardware option settings.
  • Page 118 Maintenance and Trouble Clearing 4.7: Replacing the Middle-Speed Mux/Demux/ FJTU-320-515-480 Transmux (MC1A) Unit 4.7.2 Procedure Step 1 If you have a known-good MC1A unit, use it to replace the original unit, or locate another unit and inspect it for damage, debris, and foreign objects. Verify that you have the correct type of MC1A unit for your application: •...
  • Page 119 Devices). Is the LINE LED off and the FAIL/SVCE LED on the local MC1A unit green? If Yes: If No: Complete your fault-reporting Call the Fujitsu Technical Assistance documentation. Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. You have completed this procedure.
  • Page 120 Maintenance and Trouble Clearing 4.7: Replacing the Middle-Speed Mux/Demux/ FJTU-320-515-480 Transmux (MC1A) Unit FAIL/ SVCE LINE Cable LBO-SETTING Length (feet) 0 - 100 100 - 225 225 - 325 325 - 450 Figure 4-14: MC1A-D3 Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol.
  • Page 121 Maintenance and Trouble Clearing 4.7: Replacing the Middle-Speed Mux/Demux/ FJTU-320-515-480 Transmux (MC1A) Unit FC9612MDA1 FAIL/ SVCE LINE MC1A-D3A2 Cable LBO-SETTING Length (feet) 0 - 100 100 - 225 225 - 325 325 - 450 Figure 4-15: MC1A-D3A2 Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol.
  • Page 122 Maintenance and Trouble Clearing 4.7: Replacing the Middle-Speed Mux/Demux/ FJTU-320-515-480 Transmux (MC1A) Unit FAIL/ SVCE LINE Cable LBO SETTING Length (feet) 0–100 100–225 225–325 325–450 Figure 4-16: MC1A-STS1 Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol.
  • Page 123 Maintenance and Trouble Clearing 4.7: Replacing the Middle-Speed Mux/Demux/ FJTU-320-515-480 Transmux (MC1A) Unit FAIL/ SVCE LINE Cable LBO SETTING Length (feet) 0–100 100–225 225–325 325–450 Figure 4-17: MC1A-ST1P Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol.
  • Page 124 Maintenance and Trouble Clearing 4.7: Replacing the Middle-Speed Mux/Demux/ FJTU-320-515-480 Transmux (MC1A) Unit FC9612TMD3 FAIL/ SVCE LINE MC1A-TMD3 Figure 4-18: MC1A-TMD3 Unit Front Panel FC9612TME1 FAIL/ SVCE LINE MC1A-TME1 Figure 4-19: MC1A-TME1 Unit Front Panel Issue 9, May 1999 FNC and FNC Customer Use Only Vol.
  • Page 125 Maintenance and Trouble Clearing 4.7: Replacing the Middle-Speed Mux/Demux/ FJTU-320-515-480 Transmux (MC1A) Unit FC9612MDM1 FAIL/ SVCE LINE MC1A-MDM1 Figure 4-20: MC1A-MDM1 Unit Front Panel Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.4-33...

  • Page 126: Replacing The Low-Speed Switch (Ls1A-D1) Unit

    Note: LS1A units are not required for middle-speed groups using DS3, STS-1, or OC-3 cards, or in groups not requiring protect units in the low-speed section of the FLM 150 ADM. WARNING: During unit replacement, seat all plug-in units with a slow, but firm motion. Do not push them quickly into the slot.
  • Page 127 Devices). Is the FAIL LED off? If Yes: If No: Complete your fault-reporting Call the Fujitsu Technical Assistance documentation. Center at 1-800-USE-FTAC (1-800-873- 3822) for assistance. Note: The Hardware Data Record form is provided in Appendix A of the Plug-In Unit Installation practice, FJTU-320-515-220.
  • Page 128 Maintenance and Trouble Clearing 4.8: Replacing the Low-Speed Switch (LS1A-D1) FJTU-320-515-480 Unit FC9612LSD1 FAIL ON PTCT LS1A-D1 Figure 4-21: LS1A-D1 Unit Front Panel Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.4-36...

  • Page 129: Replacing The Embedded Operation Channel (Ec1A) Unit

    Note: EC1A units are required only when F6, STS-1 or OC-3 units are used in Groups 4 or 5 of the FLM 150 ADM. The EC1A is not required for DS1 applications. WARNING: During unit replacement, seat all plug-in units with a slow, but firm motion. Do not push them quickly into the slot.
  • Page 130 Conditions). Are the FAIL and LINE LEDs off? If Yes: If No: Complete your fault-reporting documentation. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Note: The Hardware Data Record form is provided in Appendix A of the Plug-In Unit Installation practice, FJTU-320-515-220.
  • Page 131 Maintenance and Trouble Clearing 4.9: Replacing the Embedded Operation Channel FJTU-320-515-480 (EC1A) Unit FC9612EC11 FAIL LINE EC1A Figure 4-22: EC1A Unit Front Panel FC9612EC11 FAIL LINE EC1A-DL1 Figure 4-23: EC1A-DL1 Unit Front Panel Issue 9, May 1999 FNC and FNC Customer Use Only Vol.
  • Page 132 Maintenance and Trouble Clearing 4.9: Replacing the Embedded Operation Channel FJTU-320-515-480 (EC1A) Unit FC9612ECD2 FAIL LINE EC1A-DL2 Figure 4-24: EC1A-DL2 Unit Front Panel FC9612EC12 FAIL LINE EC1A-V2 Figure 4-25: EC1A-V2 Unit Front Panel Issue 9, May 1999 FNC and FNC Customer Use Only Vol.

  • Page 133: Replacing The High-Speed Switch Control (Hs1A) Unit

    Maintenance and Trouble Clearing 4.10: Replacing the High-Speed Switch Control FJTU-320-515-480 (HS1A) Unit 4.10 Replacing the High-Speed Switch Control (HS1A) Unit 4.10.1 Overview This procedure lists the steps required to install a failed HS1A High-Speed Switch Control unit. Refer to the Application Engineering practice, FJTU-320-515-120, Appendix C, Hardware Options, for descriptions of plug-in unit hardware option settings.
  • Page 134 Verify that you have the correct version for your application: • The HS1A-AD1 unit is used for all FLM 150 ADM systems. This unit does not support orderwire and DCC operations in nodes adjacent to a regenerator site.
  • Page 135 Devices). Is the FAIL LED off? If Yes: If No: Complete your fault-reporting documentation. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Note: The Hardware Data Record form is provided in Appendix A of the Plug-In Unit Installation practice, FJTU-320-515-220.
  • Page 136 Maintenance and Trouble Clearing 4.10: Replacing the High-Speed Switch Control FJTU-320-515-480 (HS1A) Unit FC9612SAM1 1 TBOS F1 SET FAIL RESTR SLAVE MASTER LINE HG1 MODE FORCE AUTO HG2 MODE FORCE AUTO HS1A-AD1 1 TBOS Setting TBOS F1 SET RESTR MASTER/SLAVE F1 SET No data Open...

  • Page 137: Replacing The Oc-12 Optical Channel (Hc1A-6Lx1) Units

    Maintenance and Trouble Clearing 4.11: Replacing the OC-12 Optical Channel FJTU-320-515-480 (HC1A-6Lx1) Units 4.11 Replacing the OC-12 Optical Channel (HC1A-6Lx1) Units 4.11.1 Overview This procedure lists the steps required to replace the failed HC1A-6Lx1 OC-12 Optical unit. Refer to Section 2, Plug-In Unit Front-Panel Devices, in this practice for descriptions of LEDs associated with each plug-in unit, and other front-panel devices.
  • Page 138 Maintenance and Trouble Clearing 4.11: Replacing the OC-12 Optical Channel FJTU-320-515-480 (HC1A-6Lx1) Units 4.11.2 Procedure Step 1 Remove the front cover from the optical cable tray located on the top front of the shelf. Note: Each unit occupies both the Working and Protect high-speed slot for the respective group (high-speed Group 1 or 2).
  • Page 139 Devices). Are the LINE and FAIL LEDs off? If Yes: If No: Complete your fault-reporting Call the Fujitsu Technical Assistance Center documentation. at 1-800-USE-FTAC (1-800-873-3822) for assistance. Note: The Hardware Data Record form is provided in Appendix A of the Plug-In Unit Installation practice, FJTU-320-515-220.
  • Page 140 Maintenance and Trouble Clearing 4.11: Replacing the OC-12 Optical Channel FJTU-320-515-480 (HC1A-6Lx1) Units DANGER DANGER Invisible laser Invisible laser radiation from radiation from connectors connectors when uncoupled when uncoupled AVOID DIRECT AVOID DIRECT EXPOSURE EXPOSURE TO BEAM TO BEAM SEND SEND FAIL FAIL...

  • Page 141: Replacing The Oc-3 Optical Channel (Hc1A And Mc6A) Units

    Maintenance and Trouble Clearing 4.12: Replacing the OC-3 Optical Channel (HC1A FJTU-320-515-480 and MC6A) Units 4.12 Replacing the OC-3 Optical Channel (HC1A and MC6A) Units 4.12.1 Overview This procedure lists the steps required to replace failed the HC1A and MC6A OC-3 Optical units.
  • Page 142 Maintenance and Trouble Clearing 4.12: Replacing the OC-3 Optical Channel (HC1A FJTU-320-515-480 and MC6A) Units Refer to Figures 4-29 and 4-30 while performing the following procedures. Please note that the both upper and lower card levers should be extended, as shown in Figure 4-29, when installing or removing the optical unit.
  • Page 143 Maintenance and Trouble Clearing 4.12: Replacing the OC-3 Optical Channel (HC1A FJTU-320-515-480 and MC6A) Units SECONDARY LATCH Figure 4-30: The Secondary Latch at the Bottom of the Optical Unit Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.4-51...
  • Page 144 Maintenance and Trouble Clearing 4.12: Replacing the OC-3 Optical Channel (HC1A FJTU-320-515-480 and MC6A) Units 4.12.2 Procedure—Removing the Optical Unit Step 1 Using both hands, squeeze the lever lock tabs toward the levers and rotate the top and bottom extractor levers. Slide the unit out until the secondary latch engages (a little less than half way out of the slot).
  • Page 145 MC6A-31xL/-31xM/-31xS /-31xA plug-in units as on the units being replaced. If the unit that is to be replaced has an MR/LR switch option, this should not be changed from factory default. Refer to the FLM 150 ADM Unit Descriptions practice, FJTU-320-515-000, for a detailed description of the hardware option switches and default settings used on these units.
  • Page 146 Devices. Are the LINE and FAIL LEDs on the optical unit off? If Yes: If No: Complete your fault-reporting documentation. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Note: The Hardware Data Record form is provided in Appendix A of the Plug-In Unit Installation practice, FJTU-320-515-220.
  • Page 147 Maintenance and Trouble Clearing 4.12: Replacing the OC-3 Optical Channel (HC1A FJTU-320-515-480 and MC6A) Units FAIL LINE SEND ON LINE MC6A-3MR1 Figure 4-32: Typical MC6A-3xxx Unit Front Panel FC9616xx31 FAIL LINE SEND ON LINE MC6A-31xx Figure 4-33: Typical MC6A-31xx Unit Front Panel Issue 9, May 1999 FNC and FNC Customer Use Only Vol.
  • Page 148 Maintenance and Trouble Clearing 4.12: Replacing the OC-3 Optical Channel (HC1A FJTU-320-515-480 and MC6A) Units OC3 I/F MODE SONET OC3 I/F MODE SONET FC9616LRx1 FAIL LINE SEND ON LINE MC6A-31xS Optical Connector Figure 4-34: MC6A-31xL/-31xM (Issue 2), MC6A-31xS (Issue 2 and Later), and MC6A-31xA Unit Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only...
  • Page 149 Maintenance and Trouble Clearing 4.12: Replacing the OC-3 Optical Channel (HC1A FJTU-320-515-480 and MC6A) Units OPEN FC9616LRx1 FAIL LINE SEND ON LINE Optical Connector SONET MC6A-31xL OC3 I/F MODE Figure 4-35: MC6A-31xL (Issue 3) Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol.
  • Page 150 Maintenance and Trouble Clearing 4.12: Replacing the OC-3 Optical Channel (HC1A FJTU-320-515-480 and MC6A) Units OPEN FC9616MRx1 FAIL LINE SEND ON LINE Optical Connector SONET MC6A-31xM OC3 I/F MODE Figure 4-36: MC6A-31xM (Issue 3) Unit Front Panel and Hardware Option Locations Issue 9, May 1999 FNC and FNC Customer Use Only Vol.

  • Page 151: Replacing The Sts-1 Electrical Channel (Hc1A-Sts1) Unit

    Maintenance and Trouble Clearing 4.13: Replacing the STS-1 Electrical Channel FJTU-320-515-480 (HC1A-STS1) Unit 4.13 Replacing the STS-1 Electrical Channel (HC1A-STS1) Unit 4.13.1 Overview This procedure lists the steps required to replace a failed HC1A-STS1 Electrical Channel unit. Refer to the Application Engineering practice, FJTU-320-515-120, Appendix C, Hardware Options, for descriptions of plug-in unit hardware option settings.
  • Page 152 DSX? If Yes: If No: Go to Step 5. The source of the problem is not the FLM 150 ADM. You have completed this procedure. Step 5 Repeat trouble analysis procedures. Refer to Section 2, Plug-In Unit Front-Panel Devices.
  • Page 153 Maintenance and Trouble Clearing 4.13: Replacing the STS-1 Electrical Channel FJTU-320-515-480 (HC1A-STS1) Unit 0 1 0 0 2 0 FAIL/ SVCE 0 1 0 0 2 0 LINE 0 1 0 0 2 0 0 1 0 0 2 0 Cable LBO-SETTING Length...

  • Page 154: Replacing The Timing Control Access (Tca) Unit

    Maintenance and Trouble Clearing 4.14: Replacing the Timing Control Access (TCA) FJTU-320-515-480 Unit 4.14 Replacing the Timing Control Access (TCA) Unit 4.14.1 Overview This procedure lists the steps required to replace a failed TCA or TCA-ENH Timing Control and Access units. Refer to the Application Engineering practice, FJTU-320-515-120, Appendix C, Hardware Options, for descriptions of plug-in unit hardware option settings.
  • Page 155 If Yes: If No: Complete your fault-reporting Call the Fujitsu Technical Assistance Center at documentation. 1-800-USE-FTAC (1-800-873-3822) for assistance. You have completed this procedure. Note: The Hardware Data Record form is provided in Appendix A of the Plug-In Unit Installation practice, FJTU-320-515-220.
  • Page 156 Maintenance and Trouble Clearing 4.14: Replacing the Timing Control Access (TCA) FJTU-320-515-480 Unit FC9616TCA FAIL/ SVCE LINE TCA LBO SETTINGS - 22 AWG Cable Length Segment 1 Segment 2 Segment 3 Segment 4 Segment 5 (feet) 0 - 250 250 - 500 500-750 Note: This table is imprinted on the back of the unit.

  • Page 157: Replacing The Low-Speed Channel-Ds1

    Maintenance and Trouble Clearing 4.15: Replacing the Low-Speed Channel–DS1 FJTU-320-515-480 (LC1A-D1xx) Unit 4.15 Replacing the Low-Speed Channel–DS1 (LC1A-D1xx) Unit 4.15.1 Overview This procedure lists the steps required to replace a failed LC1A-D1/-D1E/-D1E2 Low-Speed unit. Refer to the Application Engineering practice, FJTU-320-515-120, Section C, Hardware Options, for descriptions of plug-in unit hardware option settings.
  • Page 158 DSX? If Yes: If No: Go to Step 5. The source of the problem is not the FLM 150 ADM. You have completed this procedure. Step 5 Repeat trouble analysis procedures. Refer to Section 2, Plug-In Unit Front-Panel Devices.
  • Page 159 Maintenance and Trouble Clearing 4.15: Replacing the Low-Speed Channel–DS1 FJTU-320-515-480 (LC1A-D1xx) Unit (CH 4) OPEN FAIL/ (CH 3) SVCE OPEN LINE (CH 2) OPEN LC1A-D1 (CH 1) OPEN LCIA-D1 LBO SETTINGS-22 AWG Cable Length Segment 1 Segment 2 Segment 3 Segment 4 Segment 5 OPEN (feet) 0–250...

  • Page 160: Replacing The Low-Speed Channel-Ovtg

    Maintenance and Trouble Clearing 4.16: Replacing the Low-Speed Channel–OVTG FJTU-320-515-480 (LC1A-F6xx) Unit 4.16 Replacing the Low-Speed Channel–OVTG (LC1A-F6xx) Unit 4.16.1 Overview This procedure lists the steps required to replace a failed LC1A-F6, LC1A-F6C1, or LC1A-F6T1 Low-speed channel unit. Refer to Section 2, Plug-In Unit Front-Panel Devices, in this practice for descriptions of LEDs associated with each plug-in unit, and other front-panel devices.
  • Page 161 Step 6 FAIL/ SVCE LED off or green? If Yes: If No: Complete your fault-reporting Call the Fujitsu Technical Assistance Center at documentation. 1-800-. You have completed this procedure. Note: The Hardware Data Record form is provided in Appendix A of the Plug-In Unit Installation practice, FJTU-320-515-220.
  • Page 162 Maintenance and Trouble Clearing 4.16: Replacing the Low-Speed Channel–OVTG FJTU-320-515-480 (LC1A-F6xx) Unit FAIL/ SVCE LINE LC1A-F6 Figure 4-40: LC1A-F6 Unit Face and Side View Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.4-70...

  • Page 163: Miscellaneous Procedures

    Maintenance and Trouble Clearing 5.1: Handling Fiber Cables FJTU-320-515-480 Miscellaneous Procedures Handling Fiber Cables 5.1.1 Overview This section lists the precautionary measures that must be followed when handling optical fibers and optical components. DANGER: Never look into the end of a fiber optic cable, fiber cord, fiber pigtail, or fiber. If laser light is present, you can suffer permanent eye damage or blindness .
  • Page 164 Maintenance and Trouble Clearing 5.1: Handling Fiber Cables FJTU-320-515-480 5.1.2 Fiber Handling Guidelines Step 1 Protective caps are provided with the optical cord connectors.(Figure 5-2). When optical cords are not going to be used for a long time, put the protective caps back on the optical connectors and seal the cords in a vinyl bag.
  • Page 165 Maintenance and Trouble Clearing 5.1: Handling Fiber Cables FJTU-320-515-480 Step 4 Do not pull the cord when the connector is attached to the optical plug-in unit or optical adapter of the lightwave distribution frame (LDF) (Figure 5-4). Figure 5-4: Fiber Cord Pulling Take precautions not to place sharp bends in the cord.
  • Page 166 Maintenance and Trouble Clearing 5.1: Handling Fiber Cables FJTU-320-515-480 Step 6 Do not bend the cord to a radius of less than 50 mm (Figure 5-6). R 50 mm (2 in.) Figure 5-6: Fiber Cord Maximum Bending Radius Step 7 Do not twist the cord more than 360 degrees per meter of length (Figure 5-7).
  • Page 167 Maintenance and Trouble Clearing 5.1: Handling Fiber Cables FJTU-320-515-480 Step 8 Do not drop or step on the cord and do not subject it to excessive vibration (Figure 5-8). Figure 5-8: Fiber Cord Vibration and Shock Damage You have completed this procedure. Issue 9, May 1999 FNC and FNC Customer Use Only Vol.

  • Page 168: Cleaning, Connecting, And Disconnecting The Optical Connectors

    Maintenance and Trouble Clearing 5.2: Cleaning, Connecting, and Disconnecting FJTU-320-515-480 the Optical Connectors Cleaning, Connecting, and Disconnecting the Optical Connectors 5.2.1 Overview This procedure discusses the procedure for cleaning, connecting, and disconnecting the optical connectors. DANGER: Never look into the end of a fiber optic cable, fiber cord, fiber pigtail, or fiber. If laser light is present, you can suffer permanent eye damage or blindness .
  • Page 169 Maintenance and Trouble Clearing 5.2: Cleaning, Connecting, and Disconnecting FJTU-320-515-480 the Optical Connectors 5.2.2 Cleaning the Connectors Clean the fiber end surface if you are using the connector for the first time. In addition, clean the surface every time you disconnect the connector. Step 1 Inspect the optical fiber cords and connectors for damage.
  • Page 170 Maintenance and Trouble Clearing 5.2: Cleaning, Connecting, and Disconnecting FJTU-320-515-480 the Optical Connectors 5.2.3 Connecting the Fiber Cable Step 1 Insert the fiber cord into the plug-in unit, adapter, distribution frame, or attenuator. For slotted connector types, make sure that the tab on the connector is lined up with the slot on the receptacle.

  • Page 171: Measuring Optical Power

    Measuring Optical Output Power This section provides detailed instructions for measuring optical output power at the HC1A-3xxx and MC6A-3xxx units in the FLM 150 ADM. The channel to be measured must not be carrying traffic before this procedure is begun. Once the measurement is complete, record the information on the data record provided in the Plug-In Installation practice, FJTU-320-515-220, Appendix A.
  • Page 172 Make sure the following required equipment is available: Optical Power Meter with Sensor (Ando AQ-1135E/AQ-1965 or equivalent) and Optical Fiber Test Cord (Fujitsu H660-5381-U920 SM, PC/PC or equivalent) with the same type connectors used by power meter and optical units.
  • Page 173 Maintenance and Trouble Clearing 5.3: Measuring Optical Power FJTU-320-515-480 Step 9 If the output optical power requirements shown in Step 4 are met, continue with Step 11. If the requirements are not met, perform the following substeps until the output power meets the specifications outlined above. a.
  • Page 174 OPTICAL SENSOR SEND SEND SEND SEND ON LINE ON LINE ON LINE ON LINE HC1A-3MR1 HC1A-3MR1 HC1A-3MR1 HC1A-3MR1 Figure 5-14: FLM 150 ADM Optical Receiving Power Measurement Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.5-12...
  • Page 175 Maintenance and Trouble Clearing 5.3: Measuring Optical Power FJTU-320-515-480 Before You Start • Check for correct optical output using the procedure in Section 5.3.1, Measuring Optical Output Power. • Clean all optical connectors. • Make sure the channel to be measured is out of service. •...
  • Page 176 Maintenance and Trouble Clearing 5.3: Measuring Optical Power FJTU-320-515-480 Step 8 If the optical input power is more than –8 dBm, insert a 10- or 15-dB fixed attenuator between the lightwave distribution frame (LDF) and the optical fiber input cord. Select the amount of attenuation so that input power is between –8 and –28 dBm.

  • Page 177: Verifying External Clock And Clock Connections

    FJTU-320-515-274, RTRV Commands, and check for any alarms on the clock source. ® • If using FLEXR , go to the Fujitsu FLEXR Manual, FJTU-320-900-FLX, and check for any alarms on the clock source. You have completed this procedure. Issue 9, May 1999 FNC and FNC Customer Use Only...
  • Page 178 Maintenance and Trouble Clearing 5.4: Verifying External Clock and Clock FJTU-320-515-480 Connections CN 4 W/BL P-ECLK IN (T) BL/W P-ECLK IN (R) P-ECLK OUT (T) P-ECLK OUT (R) DRAIN DRAIN 9 PIN M D-SUB Figure 5-15: External Clock (Primary) Connector Pin-Out CN 3 W/BL S-ECLK IN (T)

  • Page 179: Correcting The T1 Or T3 Framing Format

    Is the facility provisioned correctly? If Yes: If No: Click Close. Go to Step 2. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.5-17...
  • Page 180 Click Close. Is the framing correct? If Yes: If No: You have completed this procedure. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.5-18...
  • Page 181 DLC16 — Is the facility provisioned correctly? If Yes: If No: Call the Fujitsu Technical Assistance Center at Go to Step 2. 1-800-USE-FTAC (1-800-873-3822) for assistance. Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.5-19...
  • Page 182 DLC16 — Is the framing correct? If Yes: If No: You have completed this procedure. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.5-20...

  • Page 183: Correcting Unidirectional Or Bidirectional Switch Provisioning

    UNI (unidirectional) or BI (bidirectional). Is the facility provisioned correctly? If Yes: If No: Click Close. Go to Step 2. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.5-21...
  • Page 184 Click Retrieve to verify that the command was successful. d. Click Close. Is the Direction correct? If Yes: If No: You have completed this procedure. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. 5.6.3 TL1 Procedure Note: Verify that you receive a completed (COMPLD) response to each command before going to the next step.
  • Page 185 BI (bidirectional) Is the Direction correct? If Yes: If No: You have completed this procedure. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.5-23...

  • Page 186: Placing An Sdcc In Service

    If Yes: If No: Click Cancel to close the dialog box. Go to Step 2. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.5-24...
  • Page 187 The possible settings are IS (In Service) and OOS (Out of Service). Is the channel in service? If Yes: If No: Call the Fujitsu Technical Assistance Center at 1-800- Go to Step 2. USE-FTAC (1-800-873-3822) for assistance. Step 2 Edit the SDCC status by using the following TL1 command.
  • Page 188 INIT-OSSI:TID:ALL:CTAG; Is the channel in service? If Yes: If No: You have completed this procedure. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Issue 9, May 1999 FNC and FNC Customer Use Only Vol. ll, Page 480.5-26...

  • Page 189: Correcting A Mismounted Unit

    Maintenance and Trouble Clearing 5.8: Correcting a Mismounted Unit FJTU-320-515-480 Correcting a Mismounted Unit 5.8.1 Overview A mismounted unit is indicated by a blinking red FAIL LED that denotes either of the following troubles: • The slot is configured for a different type of unit. •...
  • Page 190 Maintenance and Trouble Clearing 5.8: Correcting a Mismounted Unit FJTU-320-515-480 Step 3 Retrieve the Group Configuration to show how the slot is provisioned. a. From the Provisioning menu, choose System, then choose Set Group Configuration. A dialog box opens. b. Select Group Configuration. c.
  • Page 191 Maintenance and Trouble Clearing 5.8: Correcting a Mismounted Unit FJTU-320-515-480 Step 5 If any of the facilities in the applicable group are in service, place them out of service. a. From the Provisioning menu, choose Service State, then choose Change Facility State.
  • Page 192 Has the mismount cleared? If Yes: If No: Go to Step 9. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Step 9 Place the equipment slots back in service. a. From the Provisioning menu, choose Service State, then choose Change Equipment State.
  • Page 193 Maintenance and Trouble Clearing 5.8: Correcting a Mismounted Unit FJTU-320-515-480 Step 12 Restore the cross-connects that were removed in Step 4. a. From the Provisioning menu, choose Add/Drop. b. Select Connect and the type of circuit to connect (1-Way, 2-Way, or Broadcast).
  • Page 194 Retrieve the Group Configuration to show how the slot is provisioned. RTRV-SYS:TID::CTAG; Is the group provisioned correctly? If Yes: If No: Call the Fujitsu Technical Assistance Center at Go to Step 4. 1-800-USE-FTAC (1-800-873-3822) for assistance. WARNING: The following action has the potential for dropping traffic if not done correctly! Delete any cross-connects that exist to/from the group.
  • Page 195 Has the mismount cleared? If Yes: If No: Go to Step 9. Call the Fujitsu Technical Assistance Center at 1-800-USE-FTAC (1-800-873-3822) for assistance. Step 9 Place the equipment slots back in service starting with the higher speed unit and progressing to the lower speed units.
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  • Page 197: Appendix A Trouble Analysis Log

    Maintenance and Trouble Clearing 1: Trouble Analysis Log Forms FJTU-320-515-480 Appendix A Appendix A Trouble Analysis Log Trouble Analysis Log Forms Date: Time: System Generating Trouble Indication: Time Current Alarm and Status Conditions Cleared Issue 9, May 1999 FNC and FNC Customer Use Only Vol.
  • Page 198 PRELIMINARY–Monday, May 17, 1999 8:06 am Maintenance and Trouble Clearing 1: Trouble Analysis Log Forms FJTU-320-515-480 Appendix A Alarm Clearing Procedures Alarm Probable Cause Procedures Performed Time Alarm Cleared Alarm Clearing Procedures Alarm Probable Cause Procedures Performed Time Alarm Cleared Alarm Clearing Procedures Alarm Probable Cause...

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