Read JBL DSC 400 DVD-RDS (serv.man8) Technical Bulletin online
Service Bulletin
Service bulletin # JBL2002-001
February 2002
Harman International SNC - Harman Consumer International 2, route de Tours 72500 Château du Loir FRANCE
1
To:
all JBL Service Centers
Models:
DSC 400 Sub
Subject:
Distortion
In the event, you receive a DSC 400 SUB with the complaint: Distortion in some music passages.
The muting level will in some cases add distortion to the sound. To solve this change resistor R34 from 3K3
The muting level will in some cases add distortion to the sound. To solve this change resistor R34 from 3K3
Ω
to 2K2
Ω
on Main Amp board.
Part needed: 1 resistor 2k2
Ω
1. Remove the amp module by removing the 10 screws around the heatsink. And place the unit as showed in picture 1.
Picture 1 : ready for rework
Picture 2: shows the place to unsolder the resistor
2. Remove resistor R34 ; see picture 2
3. Add the new resistor ( The easy way to place the resistor is to put it on the solder side )
4. Assemble the unit and test the sound and the features.
Display