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NDA-24300 CHAPTER 4
Page 277
Issue 1
UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
2.3.3 DLKC Card Replacement Procedure
The DLKC (PH-PC20) card is located in Slot No. 08 or 09 within the TSWM. 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 fol-
lowing procedures to replace the DLCK card with a spare.
Note:
The system changeover of DLKC must be executed by the MBR key operation on the active GT (PH-
GT09) card or by using the CMOD command. Before starting this work, confirm the system block
diagram shown in Figure 4-16, or Section 12, System Control Procedures, in Chapter 6.
Replacement Procedure
Use extreme care when operating the keys on the circuit card.
WARNING
ATTENTION
Contents
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:
• 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 circuit cards
with #0 status are totally
affected. Check the cited
cards' lamp indications. See
Figure 4-16 and Figure 4-
17.
Check the following lamp indications
on the mate Speech Path Block and en-
sure that they are all steady-green:
• TSW ACT (TSW cards)
• OPE/MB (DLKC card)
• MUX ACT (MUX cards)
OPE/MB lamp on the DLKC card is
red.
A
START
Check the ACT mode of the mate
Speech Path System.
On the active GT (PH-GT09) card, set the MBR key
UP. Then, return the key DOWN.
On the DLKC (PH-PC20) card to be
replaced, Set the MB switch UP.