NEC UNIVERGE SV8500 - PLO Card Replacement Procedure

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CHAPTER 5 Operation Procedure for System with PIR
2.3.3 PLO Card Replacement Procedure
PLO (PH-CK16-D, etc) card is located in slot 14 or 15 within the TSWR. Used together with digital
interface cards, the card’s main function is to establish clock synchronization on the digital network. In
addition, the MUSIC ROM supplies Music-On-Hold to each station line via the TSW circuit card. Use
the procedures below to replace PLO card with a spare.
[Start]
STEP 1 PLO card to be replaced is in STBY mode?
Check OPE lamp on the PLO card. When the lamp is off, the card is in STBY mode.
EMA
EXB0
EXB1
CPU0
CPU1
IMG 0
TSW I/O BUS
TSW I/O BUS
TSW 00
GT 0
GT 1
TSW 10
TSW 01
TSW 11
TSW 02
TSW 12
TSW 03
TSW 13
DLKC 1
DLKC 0
PLO 1
PLO 0
PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS
MUX MUX MUX MUX
Line/Trunk PM
IMG 1
PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS
MUX MUX MUX MUX
Line/Trunk PM
IMG 2
PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS
MUX MUX MUX MUX
Line/Trunk PM
IMG 3
PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS PCM HW PM BUS
MUX MUX MUX MUX
Line/Trunk PM
[PIR]
[SV8500 Server]
[TSWR]
Improper key operations may result in a system down. Operate the key with extreme care.
WARNING