Service Bulletin Inf2002-3 - Infinity INTERMEZZO 3.5c Service Manual

Service Bulletin INF2002-03 - February 2002
To: All Infinity Service Centers
Model: Intermezzo 3.5c
Subject: No Output
In the event you receive an Intermezzo 3.5c center channel loudspeaker with the complaint: "There is
no output, and the LED on the volume control does not light, red or green", check the items listed
below:
Check the 3A line fuse to make sure it's not open. If open, replace with a 3A MDL (.25 x 1.25) slo-blo fuse,
Infinity part# 80126.
Locate R22 in the power supply section, as shown below.
If value of R22 is not 100k ohms ±5%, then replace R22 with a 1/2 Watt 100k ohm ±5%, resistor.
1. Remove the grille. Lay the loudspeaker on its face on a padded surface, amplifier facing upwards.
2. Remove the black metal bottom cover, (10) Phillips screws; remove the (6) Phillips screws on the amplifier
faceplate.
3. Lift the amplifier out of the enclosure cavity; detach connectors when necessary for access.
4. Locate the power supply section and R22 from the illustrations below. R22 can be checked in-circuit and
should be 100k ohms ±5%. If it is any other value, or open, replace with Infinity part# RC0082.
5. Replace the amplifier, bottom cover, and test the loudspeaker.
Service Bulletin
Warranty labor rate: MINOR repair
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