Toshiba DK Backup 用户手册

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Upgrading Strata DK Systems to DK424 Release 4.0

1. Power down the system before removing and installing the processor card(s). 

Figure 25

 

shows the slot placement of the processor cards. 

2. Remove only the RCTUA, RCTUBB, RCTUD, or RCTUF. 

3. Remove the MOH connection, if required.

4. Remove the RRCS DTMF PCB on the RCTU card, if equipped (see 

Figures 26

~

29

).

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