Trouble on One Voice Terminal
TEST D: 2-LINE/5-TERMINAL EXPANSION MODULE TEST
Do this only if other tests have determined that the trouble was caused by the
control unit or the expansion module. Also, you will need more than one expansion
module to perform this test. If you have only one expansion module, call your
equipment supplier for help. Figure 1 shows where your expansion modules are
located.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
Caution:
Turning off the control unit ac power will interrupt
normal service to all outside lines.
Add to your notes the Voice Terminals jack number (or intercom
number) of the jack (or voice terminal) on which the trouble appears.
Caution:
If the line cords and terminal cords are not properly
labeled, you should label them now. Each modular line
cord should be labeled at both ends with the letter of
the Tel. Co. Lines jack that it is connected. Also, each
modular terminal cord should be labeled at both ends
with the number of the Voice Terminals jack that it is
connected.
Disconnect all of the modular terminal cords and modular line cords from
both the expansion module on which the trouble appears and an expansion
module with no trouble.
Place the control unit
On/Off
switch in the
Off
position. If an auxiliary
power unit is used, unplug it from the ac outlet.
Warning:
Remove control unit ac power (using the control unit
On/Off switch) before inserting or removing an expan-
sion module. If you are using an auxiliary power unit,
unplug it from the ac outlet.
Switch the expansion module on which the trouble appears and the expan-
sion module with no trouble.
Connect the modular line cords back into the expansion modules. To
determine where to connect the cords, match the line cord labels to the
Tel. Co. Lines jack letters on the faceplate (see Figure 22).
Connect the modular terminal cord back into the Voice Terminals jack
on which the trouble appears (see notes made in Step 1). The terminal
cord label must match the Voice Terminals jack number. For example,
if the problem appears on the voice terminal with intercom number 14,
then the terminal cord will be connected to
Voice Terminals
jack 14 (see
Figure 23).
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