Panasonic Easa-Phone VA-123210 Installation Manual page 22

Power Failure Unit (PFU) is optional equipment which, in case of power failure, directly connects CO/PBX lines and Single
Line Telephones.
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@ Remove a PFU cover.
@ Install one wood screw on the wall remaining about 5/16 inches of the screw length unscrewed.
@ Hook the mounting hole provided at the top of the PFU to the on-wall installed wood screw, then fasten the wood screw
completely.
@ Install two wood screws on the wall through the two respective mounting holes provided at the bottom of the PFU.
(1) Connect the connectors labelled "FROM COL" (COL 'I to 4) and located inside the power failure unit to the respective
central office lines.
(2) Connect COL NOS. 1, 2, 3 and 4 inside the key service unit to the connectors (4 places from the top) labelled "TO COL
(KSU)" and located inside the power failure unit, respectively.
(3) Connect the connectors (4 places from the top) located on the card of the SLT card (right side card), vvhich is set inside
the key service unit, to the connectors labelled "FROM SLT-LC(KSU)" and located inside the power failure unit, respec-
tively.
(4) Connect the connectors (TELs 1 to 4) labelled "TO SLT" and located inside the power failure unit to the respective single
line telephones. These connectors are allotted, in order from the top, Extensions Nos. 38,39,40 and 41.
(5) Connect the two screw terminals labelled "PFU" and located inside the key service unit to the respective two screw
terminals labelled "TO KSU" and located inside the power failure unit.
(6) Remove the clamp plate, insert the cords, then reinstall the clamp plate over the cords and secure into place with the
screw.
Note: That when power failure occurs the COLs correspond to iXTs as shown below.
COL 1-+ EXT. No. 38
COL 2 -+ EXT. No. 39
COL 3 -+ EXT. No. 49
COL 4 -+ EXT. No. 41
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