Infinity Bass Link - Manual (Page 34)

33
Service Bulletin
Service Bulletin INF2003-01 - January 2003 Warranty labor rate: MINOR repair
To: All Infinity Service Centers
Model: Basslink (version w/ LC - Remote Level Control); Basslink X
Subject: Dead or No Power
In the event you receive a Basslink subwoofer with the complaint: “The unit is completely dead with no
LED indicator, or sound”, check the following area on the PCB:
1) Set the unit on a padded surface and remove all external cables.
2) On the amplifier faceplate, remove
only the (14) Phillips mounting screws as shown in Figure 1.
3) Pull amplifier assembly from the enclosure. Unplug ribbon cable at M202 and Molex speaker connector
at M101; remove amplifer.
4) Check Main PCB for a damaged (open) trace in the main 12VDC path; see exact location shown in the
two illustrations. It is near the large main filter caps, next to braided connection “5” lead from the
transformer.
5) If the trace is damaged: clean, solder, and bridge the connection with copper solder braid (solder wick
used for solder removal), or a short piece of 14 or 12 gauge buss wire.
6) After the repair is complete, new gaskets should be added to the amplifier mating surface; two pairs are
required, four gaskets total: Infinity part# 333-EVA-00836 and 333-EVA-00827.
7) Re-connect the cable and connector, replace the amplifier assembly, and tighten all mounting screws.
Use caution: a hand tool is recommended to prevent stripping the threads in the enclosure.
8) Connect 12VDC to the unit and test.
Models Serial number Status Action
Basslink (version w/ LC -
Remote Level Control)
ME0661-00000 to ME0661-19308
Basslink X: ME0641-00000 to ME0641-01358
Check Power Supply
PCB Trace For Damage
Repair Circuit Trace
Basslink (version w/ LC -
Remote Level Control)
ME0661-19309 and above
Basslink X: ME0641-01359 and above
Modified by factory NONE REQUIRED