SYSTEM/MODEL:
NEM
MODIFICATION:
Installing PC-359B (or PC-454) with speaker and call button
COMPONENTS REQUIRED:
1. PC-359B or PC-454: Call holding circuit board, one per remote
speaker/call button
2. LT-1: 8 to 20 ohm transformer, one per remote speaker (Use
speaker with 1W handling capacity.)
INSTR/OPERATIONS:
1. If the existing speaker is 8 ohms, install the LT-1 transformer
with the BLUE wires to the speaker.
2. If the existing speaker is 45 ohms, install the LT-1 with the
RED wires to the speaker.
3. Make connections to PC-359B/454 as shown, being careful
not to short any exposed metal components on the PC board. (A
soldering iron and soldering skills are required for the PC-359B.
Wires are provided on the PC-454.)
4. Make sure that no moisture can come into contact with the PC
board when it is installed in its designated location.
REFERENCE DRAWING #:
0404-602
DIFFICULTY LEVEL:
4 - Moderate/hard - Internal connection or component addition.
Aiphone’s product warranty applies to products properly modified using these instructions.
However, if a unit is damaged as a result of improper modification, the warranty does not apply.