NEC Neax 2400 Ipx System Operations And Maintenance Manual
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NDA-24307 CHAPTER 4 Page 303 Issue 1 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE Figure 4-13 LEDs and Switches for TSW Changeover MUX (PH-PC36) MUX ACT MBIOGT (PH-GT10) TSW ACT MBRMBDLKC (PH-PC20) OPE/MB MBHSW (PU-SW01) HSW ACT MB FRONT VIEWTSW (PH-SW12) TSW ACT TSW MBRMBTSW (PU-SW00) TSW ACT TSW MBRTSW MB ISWLN
CHAPTER 4 NDA-24307 Page 304 Issue 1 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE TSW ACT lamp on the TSW card remains OFF. TSW ACT lamp on the TSW card lights red. TSW ACT lamp on the new card lights red. ATTENTIONContents Static Sensitive Handling Precautions Required B Set TSW MBR and MB keys on the new card UP. A Insert the new TSW card into the TSWM.Set the keys on the new card, referring to the card replaced. Extract the TSW card to be replaced from the TSWM. On the TSW (PH-SW12) card to be replaced, set the TSW MBR switch UP. Confirm M0SY, M1SY, M2SY and M3SY LEDs on the new card are all lighting green. On the TSW card to be replaced, set the MB switch UP.
NDA-24307 CHAPTER 4 Page 305 Issue 1 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE Note: This procedure assumes the Speech Path mode change is executed totally on a system basis. If the change is required on a node basis, use the MBR key on that node’s GT (PH-GT09) card or CMODI/ CMOD command. For more details, refer to Section 12, Chapter 6. ATTENTIONContents Static Sensitive Handling Precautions Required TSW ACT lamp on the new card goes OFF. TSW ACT lamp on the new card remains OFF. System Changeover Replaced TSW: STBY to ACT Mate TSW: ACT to STBY Check the following lamp indications on the Speech Path block to which the new TSW card belongs and ensure that they are all steady- green: At the ISW: TSW ACT (IOGT cards) TSW ACT (TSW cards) HSW ACT (HSW cards) At the LN: TSW ACT (TSW cards) OPE/MB (DLKC card) MUX ACT (MUX cards) Check the following lamp indications on the mate Speech Path block and ensure that they are all OFF: At the ISW: TSW ACT (IOGT cards) TSW ACT (TSW cards) HSW ACT (HSW cards) At the LN: TSW ACT (TSW cards) OPE/MB (DLKC card) MUX ACT (MUX cards) (Refer to Figure 4-12 and Figure 4-13.) END B Set the MB key on the new card DOWN. Flip the MBR key on the active IOGT card. Confirm the new TSW card functions normally. Set the TSW MBR key on the new card DOWN. MBR (on the active IOGT card of ISW) 12
CHAPTER 4 NDA-24307 Page 306 Issue 1 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE 2.3.3 DLKC Card Replacement Procedure The DLKC (PH-PC20) card is mounted in Slot No. 08 or 09 within the TSWM0. The card’s main function is to provide all the Attendant/Desk Consoles with information such as termination/answer/ release (abandoned) of ATT calls or idle/busy status of a station via the link of the TSW system. Use the following procedures to replace the DLKC card with a spare. Note:The system changeover of DLKC must be executed by the MBR key operation on the active IOGT (PH- GT10) card or by using the CMODI command. Before starting this work, confirm the system block diagram shown in Figure 4-12, or Section 12, Chapter 6. Replacement Procedure Use extreme care when operating the keys on the circuit card. WA RN I NG ATTENTIONContents Static Sensitive Handling Precautions Required System Changeover. Check the following lamp indications on the circuit cards to be affected and ensure that they are all OFF: At the ISW: TSW ACT (IOGT cards) TSW ACT (TSW cards) HSW ACT (HSW cards) At the LN: TSW ACT (TSW cards) OPE/MB (DLKC card) Note MUX ACT (MUX cards) Note: If the DLKC card to be replaced represents system status 0, all the circuit cards with 0 status are totally affected. Check the whole cited cards lamp indications. (See Figure 4-12 and Figure 4-13.) Check the following lamp indications on the mate Speech Path block and ensure that at ISW they are all OFF and at LN all are a steady green: At the ISW: TSW ACT (IOGT cards) TSW ACT (TSW cards) HSW ACT (HSW cards) At the LN: TSW ACT (TSW cards) OPE/MB (DLKC card) MUX ACT (MUX cards) OPE/MB lamp on the DLKC card lights red. A START Check the ACT mode of the mate Speech Path System. On the active IOGT (PH-GT10) card in ISWM, set the MBR key UP. Then, return the key DOWN. On the DLKC (PH-PC20) card to be replaced, Set the MB switch UP.
NDA-24307 CHAPTER 4 Page 307 Issue 1 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE Note: The changeover of Speech Path system can be performed also by using the CMODI command. For details, refer to Chapter 8, Maintenance Commands. ATTENTIONContents Static Sensitive Handling Precautions Required OPE/MB lamp on the new card lights red. OPE/MB lamp on the new card goes OFF. System Changeover Replaced DLKC: STBY to ACT Mate DLKC: ACT to STBY Check the following lamp indications on the Speech Path block to which the new DLKC card belongs and ensure that they are all steady-green: At the ISW: TSW ACT (IOGT cards) TSW ACT (TSW cards) HSW ACT (HSW cards) At the LN: TSW ACT (TSW cards) OPE/MB (DLKC card) MUX ACT (MUX cards) Check the following lamp indications on the mate Speech Path block and ensure that they are all OFF: At the ISW: TSW ACT (IOGT cards) TSW ACT (TSW cards) HSW ACT (HSW cards) At the LN: TSW ACT (TSW cards) OPE/MB (DLKC card) MUX ACT (MUX cards) (Refer to Figure 4-12 and Figure 4-13.) END On the new DLKC card, set the MB key DOWN. A Extract the DLKC card to be replaced from the TSWM. Flip MBR key on the active IOGT card. Confirm the new DLKC card functions normally. On the new DLKC card, set the MB switch UP. Insert the new DLKC card into the TSWM. M BR (on the active IOGT card of ISW ) 12
CHAPTER 4 NDA-24307 Page 308 Issue 1 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE 2.3.4 PLO Card Replacement Procedure The PLO (PH-CK16-A) card is mounted in Slot No. 21 or 23 within the TSWM0. Used together with a direct digital interface circuit card, the card’s main function is to set up the clock synchronization on the network. With this circuit card, the Local Node can be a clock subordinate office of the digital network. Use the procedures below to replace the PLO card with a spare. Note:The ACT/STBY of PLO can be changed over via a single MB key operation on the circuit card (ACT side). Though its circuit is controlled by the GT (PH-GT09) card in TSWM0 via TSW I/O bus, the switching system of PLO (LN) is not affected by the speech path system changeover, differing from other echelons such as TSW, MUX, DLKC. Refer to Section 12, Chapter 6. If the system of PLO in TSWM0 is once changeover, the ACT/STBY of CLK in TSWM1 is also changed over. Replacement Procedure ATTENTIONContents Static Sensitive Handling Precautions Required PLO system is changed over from ACT to STBY mode. OPE lamp on the PLO and CLK cards in the same LN goes OFF. Check the following lamp indications on the mate PLO and CLK cards in the same LN. OPE = Steady-green A START Extract the PLO card to be replaced from the TSWM0. Check the mate PLOs ACT mode. On the active PLO (PH-CK16-A) card, set the MB key UP. Set the keys on the new card according to the card replaced.
NDA-24307 CHAPTER 4 Page 309 Issue 1 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE OPE lamp on the new card is OFF. OPE lamp on the new card remains OFF. (Mate PLO = ON [green]) ATTENTIONContents Static Sensitive Handling Precautions Required END A Insert the new PLO card into the TSWM0. On the new PLO card, set the MB key UP. Set the MB key on the new card DOWN.
CHAPTER 4 NDA-24307 Page 310 Issue 1 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE 2.3.5 CLK Card Replacement Procedure The CLK (PH-CK18) card is mounted in Slot No. 21 or 23 within the TSWM1. The card’s main function is to supply basic clock signals to IMG2/3. This card receives clock signs from the PLO located in TSWM0, thereby distributing the supplied 32,768 MHz CLK, 8 KHz FH (5msec x “n” FH [for Wireless system]), PLO ACT signals and Hold tone to the TSW located in TSWM1. Use the procedures below to replace the CLK card with a spare. Note:The ACT/STBY of CLK(s) can be changed over when the PLO in TSWM0 is changed over (by flipping the MB key on the active PLO card). Replacement Procedure ATTENTIONContents Static Sensitive Handling Precautions Required OPE lamps on the CLK and PLO cards goes OFF. OPE lamps on the mate CLK and PLO cards are steady green. A START On the CLK (PH-CK18) card to be replaced, set the MB key UP. Check the mate CLKs ACT mode. On the active PLO (PH-CK16-A) card located in TSWM0, set theMB key UP and then DOWN. Extract the CLK card to be replaced from the TSWM1.
NDA-24307 CHAPTER 4 Page 311 Issue 1 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE OPE lamp on the new card is OFF. OPE lamp on the new card remains OFF. (Mate CLK = ON [green]) ATTENTIONContents Static Sensitive Handling Precautions Required END A Insert the new CLK card into the TSWM1. On the new CLK card, set the MB key UP. Set the MB key on the new card DOWN.
CHAPTER 4 NDA-24307 Page 312 Issue 1 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE 2.3.6 PWR SW Card Replacement Procedure The PWR SW (PH-PW14) card is mounted in Slot No. 00 or 01 within the TSWM0/1. The card’s main function is to supply DC -48V operating power to the same TSWM circuit cards and also DC +5, -5 V and +12 V output power to the MISC slots. Use the following procedures to replace the card with a new one. Replacement Procedure ATTENTIONContents Static Sensitive Handling Precautions Required P-ON lamp on the PWR SW card goes OFF. ALM lamp on the PWR SW card lights red. P-ON lamp on the new card is OFF. ALM lamp on the PWR SW card lights red. P-ON lamp on the new card lights steady-green. ALM lamp on the PWR SW goes OFF. END START Extract the PWR SW card to be replaced from the TSWM. On the new PWR SW card, set the SW key DOWN. On the PWR SW (PH-PW14) card, set the SW key DOWN. Insert the new PWR SW card into the TSWM. On the new PWR SW card, set the SW key UP.