Elenco Electronics TT-400K, Assembly And Instruction Manual, Page: 12 / 16

SIMPLIFIED INSTRUCTIONS
(FOR MORE DETAIL, SEE DETAILED INSTRUCTIONS).
LINE TEST
1. Set the switch of the TT-400 to the LINE/RING position,
and connect it and the telephone as shown in Figure 10.
2. Hang up the telephone connected to the TT-400. All
other telephones connected to the same line should also
be hung up.
3. The TT-400 meter reading should be in the LINE OK
area.
4. Pick up the telephone.
5. The meter should read near zero.
6. The reading should return to the LINE OK area when the
telephone is hung up again.
RING TEST
1. Set the switch of the TT-400 to the LINE/RING position
and connect it and the telephone as shown in Figure 10.
2. Hang up the telephone connected to the TT-400. All other telephones connected to the same line should
also be hung up.
3. Have someone call you.
4. The meter should read in the RING OK area while the telephone is ringing. The ring signal will cause the
needle to vibrate.
LOOP TEST
1. Set the switch of the TT-400 to LOOP position and connect it and the telephone as shown in Figure 10.
2. Hang up the telephone connected to the TT-400. All other telephones connected to the same line should
also be hung up.
3. The meter reading of the TT-400 should be in the LOOP OK area.
4. Return the switch to the LINE/RING position. When left in the LOOP position, anyone attempting to call you
will get a busy signal.
DETAILED INSTRUCTIONS
LINE TEST
1. Put the TT-400 switch in the LINE/RING position.
2. Hang up the telephone and plug it into the INPUT jack on the TT-400 (see Figure 10).
3. Plug the TT-400 cord into the wall jack. Be sure that all other telephones on the same line are hung up.
4. If the voltage on the telephone line is correct (about 48 volts), the TT-400 meter will read in the LINE OK area.
5. If the meter is not in the LINE OK area, one of the telephones may be loading the telephone line. Unplug
each telephone that is on the same line and unplug the telephone from the TT-400 INPUT jack. If unplugging
a telephone causes the TT-400 meter to read in the LINE OK area, that telephone is probably defective.
Figure 10
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Wall Jack
TT-400
Phone