Pub. 42004-638L2
Model 780/7805-301 Page/Party
®
Handset Stations for Cenelec Zone 1 Applications
Page: 11 of 15
\\s_eng\gtcproddocs\standard ioms - current release\42004 instr. manuals\42004-638l2.doc
6/98
To make these adjustments, remove the assembly from its enclosure and make a temporary connection
between the assembly and the enclosure as described in the following steps:
1.
Loosen the four captive screws that secure the front panel.
2.
Remove the assembly from the enclosure.
3.
Connect the assembly to the enclosure using a Model 10440-002 Maintenance Cable between
P1
on
the assembly and
J1
on the enclosure.
4.
Locate the control on the appropriate PCBA. Using a small flat-blade screwdriver with an insulated
shaft, turn a control clockwise to increase the volume or threshold; turn it counterclockwise to
decrease the volume or threshold.
5.
When you are done with the adjustment:
a)
Disconnect the Model 10440-002 Maintenance Cable.
b)
Insert the assembly into the enclosure.
c)
Tighten the four screws.