Toshiba Strata DK8 - Manual (Page 54)

4-8
INSTALLATION-DK8 KSU & PCB
SECTION 100-816-204
MARCH 1993
FIGURE 4-6
DK8 KEY SERVICE UNIT POWER FAILURE TRANSFER (PFT) CIRCUIT DIAGRAM
4
3
MOD JACK CO1
(KSU)
MDF
CO
LINE
5
2
MOD JACK PF1
(BASE UNIT)
R
T
MDF
PFT
STANDARD
TELEPHONE
DK8 OR DK16
KSU MAIN PCB
T
R
POWER FAIL
CONNECTION
POWER AVAILABLE
CONNECTION
KCOU
CO LINE 1