Read JBL SCS 20 sub Service Tips online
JBL
Service Tips
December,
2002
Harman International SNC - Harman Consumer International 2, route de Tours 72500 Château du Loir -FRANCE-
To:
All JBL Service Centers
Models:
SCS 138, SCS 178, SCSSUB, ATX100S, SUB100
Subject:
Standby time
In the event you receive an above mentioned SUB with the complaint:
The SUB goes in to standby after short time when the sound level is low, do following action:
The new standby time will be about 10min and the SUB needs lower level to stay in on mode.
1. For SUB100/ATX100S amplifier,
C233 = 100 uF
R260 = 4.7 kOhms
R250 = 22 kOhms
R249 = 33 kOhms
Bypassed D215 and D216.
2. For JBL SCS138, SCS178 and SCSSUB subwoofer,
R266 = 100k
C233 = 100 uF
R260 = 4.7 kOhms
R250 = 22 kOhms
R249 = 33 kOhms
Bypassed D207 and D208
The component is standard component and we recommend that it is purchased locally.
C233 = 100 uF
R260 = 4.7 kOhms
R250 = 22 kOhms
R249 = 33 kOhms
Bypassed D215 and D216.
2. For JBL SCS138, SCS178 and SCSSUB subwoofer,
R266 = 100k
C233 = 100 uF
R260 = 4.7 kOhms
R250 = 22 kOhms
R249 = 33 kOhms
Bypassed D207 and D208
The component is standard component and we recommend that it is purchased locally.
The resistors is 1/4W and the capacitors is 16V
Model
Model
Serial number
Status
Action
SCSSUB, SCS138, SCS178,
SUB100 ATX100S,
SUB100 ATX100S,
Before November 2002
Change in standby time
See above
Display