NEC Neax 2400 Imx System Operations And Maintenance Manual
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CHAPTER 4 NDA-24238 Page 264 Revision 3.0 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE ATTENTIONContents Static Sensitive Handling Precautions Required END Insert the new PWR UNIT into the LPM. Extract the PWR UNIT from the CPR. Turn ON the SW key on the PWR UNIT. A On the EMA card, set EMA SUP switch DOWN. Reattach power alarm cable to the PALM Connector on the PZ-PW92.Reattach power cables to OUTPWR and INPWR Connector on the PZ-PW92.
NDA-24238 CHAPTER 4 Page 265 Revision 3.0 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE 1.3.5 MISC Card Replacement Procedure ATTENTIONContents Static Sensitive Handling Precautions Required Keep MB switch UP. END Extract the MISC card from its mounting slot. On the MISC card, set MB switch UP. On the MISC card, set MB switch DOWN. START Insert the new circuit card into the same mounting slot.
CHAPTER 4 NDA-24238 Page 266 Revision 3.0 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE 2. TSWM ACCOMMODATING CIRCUIT CARD REPLACEMENT PROCEDURE This section explains the procedure for replacing circuit cards accommodated in the TSWM. 2.1 Precaution This procedure is applied when replacing a faulty circuit card with a spare. It is also able to be applied when checking a spare card. There are the functional switches (having set the default switch) on some of the circuit cards to be replaced. As for switch setting on the circuit cards, confirm the circuit card mounting face layout for the PIM. When a circuit card that has default switch settings has been replaced with a spare card, be sure to make switch settings on the new circuit card the same as on the replaced card. Otherwise, elec- tronic components on the circuit card may be destroyed, or the circuit card itself may fail to function normally. When handling a circuit card, be sure to use the field service kit for countermeasures against static electricity. If you touch a circuit card without using the field service kit, electronic components like an IC on the card may be destroyed by the static electricity on the human body. 2.2 Circuit Card Mounting Face Layout The face layout of the circuit cards housed in the TSWM is shown in Figure 4-4 Circuit Card Mounting Face Layout of TSWM. Note that the circuit cards marked with * are optional. Figure 4-14 Circuit Card Mounting Face Layout of TSWM 0 0102030405060708091011121314151617181920212223 MISC MISC MISC MISC DLKC0 DLKC1 GT0 GT1 TSW00 TSW01 TSW02 TSW03 TSW10 TSW11 TSW12 TSW13 (RES) PWR SW0 TSWM Slot No. PWR SW1MISCPLO0PLO1 (RES) PWRSW: PH-PW14 DLKC: PH-PC20 GT: PH-GT09 TSW: PH-SW12 PLO: PH-CK16/17 * * * * * Improper key operations may result in a system down. Operate the key, using extreme care. By replacing a circuit card, the system will issue system messages and activate the related alarm. Be sure to reset the indicated alarm after the replacement procedure is complete. If the indicated alarm is cleared via the RALM command, the system also clears the contents of the system mes- sage. Be sure to print out the messages (using the DFTD command) BEFORE using the RALM command. The ALM RST button is used to reset the alarm lamps only.WA R N I N G
NDA-24238 CHAPTER 4 Page 267 Revision 3.0 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE 2.3 Operating Procedures The following paragraphs explain the operating procedures to replace circuit cards located in the PIM. Perform the operations corresponding to each Reference Item specified in Ta b l e 4 - 2. Table 4-2 TSWM Circuit Cards and Reference Items CIRCUIT CARD FUNCTION NAMEREFERENCE ITEM REMARKS GTSection 2.3.1, GT Card Replacement Procedure TSWSection 2.3.2, TSW Card Replacement Procedure DLKCSection 2.3.3, DLKC Card Replacement Procedure PLOSection 2.3.4, PLO Card Replacement Procedure PWR SWSection 2.3.5, PWR SW Card Replacement Procedure MISCSection 2.3.6, MISC Card Replacement Procedure
CHAPTER 4 NDA-24238 Page 268 Revision 3.0 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE 2.3.1 GT Card Replacement Procedure The GT (PH-GT09) card is located in Slot No. 10 or 11 within the TSWM. The card’s main function is to provide both MISC and I/O Local bus interface between the microprocessor of CPU and other lower echelons, such as DLKC, TSW and MUX cards. Follow the procedures below to replace a GT card with a spare. Note:To replace the GT card, the ACT/STBY status of GT must be changed over first. This must be done by operating the MBR key (or by using the CMOD command) on the DSP of active CPR. Figure 4-15 shows a system block diagram centering upon the CPU and its controlling GT. If the ACT/STBY of GT is to be changed over, the system of CPU must be manually changed over. For more details on the GT changeover, refer to Section 12.1.2, How to Control CPU Block, in Chapter 6. Figure 4-15 System Block Diagram (Connections Between GT and CPU) IMG0 IMG1 IMG2 IMG3 TSW I/O BUS TSW I/O BUS CPR 0CPR 1 MISC BUS IOP0 Backboard Backboard Bus T External Cable TSW 00 GT 0 GT 1 CPU 1 MUXMUXMUXMUX TSW 10 TSW 01 MUXMUXMUXMUX TSW 11 TSW 02 MUXMUXMUXMUX TSW 12 TSW 03 MUXMUXMUXMUX TSW 13 DLKC 1DLKC 0PLO 1 PLO 0 ISAGT LANILANI ISAGT LANILANI IOC/ MISCEMA CPU 0 CPU ISAGT0 GT 1GT 0 Note:The connection between ISAGT and GT is somewhat unique in this system. As shown, though an external cable is physically connected between ISAGT #0 and GT#1, the actual control signal is sent/received only between ISAGT 0 and GT 0. This is because GT 0 and GT 1 have a multiple connection on the backboard side. Note ISAGT: PZ-GT13 LANI: PZ-PC19 GT: PH-GT09 TSW: PH-SW12 MUX: PH-PC36 DLKC: PH-PC20 PLO: PH-CK16/17 EMA: PH-PC40 IOC: PH-IO24
NDA-24238 CHAPTER 4 Page 269 Revision 3.0 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE GT Card Replacement Procedure Use extreme care when operating the keys on the DSP of CPR and PH-GT09 card. WAR NI NG System changeover of GT from ACT to STBY mode ATTENTIONContents Static Sensitive Handling Precautions Required Check the following lamp indications on the GT card to be replaced and on the DSP of CPR that controls the GT: OPE/MB (GT card) = OFF CPU OPE (CPU DSP) = OFF IMG0 (CPU DSP) = Flash (green) IMG1-3 (CPU DSP) = OFF Check the following lamp indications on the mate GT card and the DSP of the mate CPR: OPE/MB (GT card) = Steady-green CPU OPE (CPU DSP) = Steady- green IMG0-3 (CPU DSP) = Flash (green) EMA SUP lamp on the EMA card is steady-green. GT (PH-GT09) OPE/MB MBR MB IMG1 IMG2 IMG3 CPUOPE WDT IMG0 12 34 567 8 OFF 12 34 567 8 OFF 12 34 OFF MBR FRONT VIEWDSP ON 4C026AE A Confirm the mate GTs ACT mode. START On the EMA (PH-PC40) card, set the EMA SUP key UP. On the DSP of active CPR, turn ON the MBR key. Turn OFF the MBR key again.
CHAPTER 4 NDA-24238 Page 270 Revision 3.0 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE ATTENTIONContents Static Sensitive Handling Precautions Required OPE/MB lamp on the GT card remains OFF. OPE/MB lamp on the new card is OFF. OPE/MB lamp on the new card remains OFF. B Set the MBR and MB keys on the new card UP. A Set the MB key on the new card DOWN. Insert the new GT card into the TSWM.Extract the GT card to be replaced from the TSWM. Set the MBR key on the new card DOWN. On the GT card to be replaced, set the MB switch UP. On the GT card to be replaced, set the MBR switch UP.
NDA-24238 CHAPTER 4 Page 271 Revision 3.0 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE Note: The system changeover of GT can be executed also by using the CMOD command. For details, refer to Chapter 8, Maintenance Commands.EMA SUP lamp on the EMA card goes OFF. System Changeover Replaced GT: STBY to ACT Mate GT: ACT to STBY Check the following lamp indications on the new GT card and the DSP of the CPR which controls the GT. OPE/MB (GT card) = Steady-green CPU OPE (CPU DSP) = Steady-green IMG0-3 (CPU DSP) = Flash (green) Note:IMG2~3 lamp indications may vary depending on the system configuration. Check the following lamp indications on the mate GT card and the DSP of the mate CPR: OPE/MB (GT card) = OFF CPU OPE (CPU DSP) = OFF IMG0 (CPU DSP) = Flash (green) IMG1-3 (CPU DSP) = OFF ATTENTIONContents Static Sensitive Handling Precautions Required END B Flip the MBR key on the DSP of CPU which controls the mate GT. Confirm the new GT functions normally. On the EMA card, set the EMA SUP switch DOWN.
CHAPTER 4 NDA-24238 Page 272 Revision 3.0 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE 2.3.2 TSW Card Replacement Procedure The TSW (PH-SW12) card is located in the Slot Nos. ranging from 12 to 19 within the TSWM. Equipped with the Time Division Switch (TSW) and Speech Path Controlling Interface (INT), the card’s main function is to provide a maximum of 8192 × 2048 Time Slot (TS) switching for a desig- nated single IMG. Because a single TSW card only enables the TS switching associated with a single, individual IMG alone, note that the fully expanded 4-IMG system requires a total of 4 TSW cards when it adopts a single configuration, or as many as 8 in the case of dual configuration. If your system adopts the latter’s dual configuration, the card’s replacement procedures are as follows: Note:To replace a TSW card in dual configuration, the system of the card must be changed over from ACT to STBY mode. The changeover can be done by flipping the MBR key on the active GT (PH-GT09) card or by using the CMOD command. For more details, refer to Section 12, System Control Procedures, in Chapter 6. Figure 4-16 provides the system block diagram centering upon the TSW cards. If the system of TSW/ INT is changed over, the ACT/STBY of DLKC and MUX in the same switching block are also totally changed over. The changeover can be performed by flipping the MBR key on the active GT (PH-GT09) card, or by using the CMOD command.
NDA-24238 CHAPTER 4 Page 273 Revision 3.0 UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE Figure 4-16 Syste m Bloc k Diag ram (TSW and Ot her Speech Path Echelo ns) IMG0 TSW I/O BUS TSW I/O BUS CPR 0CPR 1 TSW 00 GT 0 GT 1 CPU 1 TSW 10 TSW 01 TSW 11 TSW 02 TSW 12 TSW 03 TSW 13 DLKC 1DLKC 0PLO 1 PLO 0 ISAGT LANILANI ISAGT LANILANI ISAGT: PZ-GT13 LANI: PZ-PC19 GT: PH-GT09 TSW: PH-SW12 MUX: PH-PC36 DLKC: PH-PC20 PLO: PH-CK16/17 CPU 0 PCM HWPM BUSPCM HWPM BUSPCM HWPM BUSPCM HWPM BUS MUXMUXMUXMUX Line/Trunk PMIMG1 PCM HWPM BUSPCM HWPM BUSPCM HWPM BUSPCM HWPM BUS MUXMUXMUXMUX Line/Trunk PMIMG2 PCM HWPM BUSPCM HWPM BUSPCM HWPM BUSPCM HWPM BUS MUXMUXMUXMUX Line/Trunk PMIMG3 PCM HWPM BUSPCM HWPM BUSPCM HWPM BUSPCM HWPM BUS MUXMUXMUXMUX Line/Trunk PM