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Service Bulletins

Some of the service bulletins listed here may be password protected. This is intended to limit their access to qualified technicians only.
Contact QSC Technical Services Group to obtain the password.

General
QSC0001 Replacement Part Number Updates

Amplifiers

RMX Series
RMX0001 Q205 Lead Stress
RMX0002 RMX Turn-on Delay
RMX0004 RMX 2450 AC Wire Routing
RMX0005 RMX 2450 AC Wire Replacement
RMX0006 RMX 2450 IRFZ44N Field Effect Transistor
RMX0007 RMX Series Gain Modification
RMX0008 MAC224 Triac Substitution
RMX0009 RMX Quieter Fan Update
 

PLX Series
PLC0001 Intermittent Ribbon Cable
PLC0002 Power Resistor Hot Spots
PLC0003 Fan Speed Update
PLC0004 PLX Gain Modification
PLC0006 PLC Shutdown Time Constant
PLC0009 Loose-Fitting 120V IEC Power Cord
 

PLX2 Series

PLC0012 PLX2 Faceplate Replacement

PLC0013  TOPSWITCH Supply in 8-Channel CX

PLC0014  Low-Level Distortion in PLX1804

PLC0015  Gain pot replacement

PLC0016  PLX2 signal LED malfunction

PLC0017  Gain pot update for CX, DCA, and PowerLight 3
 

DCA Series
PLC0001 Intermittent Ribbon Cable
PLC0002 Power Resistor Hot Spots
PLC0003 Fan Speed Update
PLC0005 Four Channel Amp Turn On Instability
PLC0006 PLC Shutdown Time Constant
PLC0007 Four-Channel Amplifier Fastener Update
PLC0009 Loose-Fitting 120V IEC Power Cord
PLC0011 Mute Delay Reduction
 

CX Series
PLC0001 Intermittent Ribbon Cable
PLC0002 Power Resistor Hot Spots
PLC0003 Fan Speed Update
PLC0005 Four Channel Amp Turn On Instability
PLC0006 PLC Shutdown Time Constant
PLC0007 Four-Channel Amplifier Fastener Update
PLC0009 Loose-Fitting 120V IEC Power Cord
PLC0011 Mute Delay Reduction
 

PowerLight 3 Series

PL30001 PL380 and Standby
 

PowerLight 2 Series
PLC0006 PLC Shutdown Time Constant
PLC0009 Loose-Fitting 120V IEC Power Cord
PLC0010 PL-2 Series Gain Modification for Meyer Systems
PLC0011 Mute Delay Reduction
 

PowerLight Series
PFC0001 PowerLight 6.0 and 9.0 PFC MOSFET Replacement

PFC0003  Protect Event upon Power On
 

ISA Series
ISA0001 Turn-on Hang up
RMX0008 MAC224 Triac Substitution
 

MXa Series
MXA0004 Toshiba Driver Replacements
 

SRA Series

PLC0011 Mute Delay Reduction
 

SC28 Series

SC280001  SC28 firmware update
 
 

Digital

CM16a MultiSignal Processor
CM160001 MAC Address Reprogramming
CM160002 CM16 Network Connectivity Loss
CM160003 CM16 Audio Board Fasteners Update
CM160004 CM16 Processor Board Standoff Update
CM160005 Using TFTP to Upcode CM16a Firmware
 

RAVE Routing Audio Via Enthernet
RAV0001 Rave Firmware Upgrade (All prior to CobraNet 2.6.9)
RAV0002 Outputs Paralleled for Redundant Operation
RAV0003 Rave 161s-24 Audio Dropouts
 

DSP-3 Digital Signal Processor
DSP0001 DSP-3 Noise and RS232 Update
DSP0002 DSP-3 Troubleshooting Guide
DSP0003 RS232 Pin 9 Functionality
DSP0006 DSP Series Microcontroller Update
DSP0007 DSP-3 PLD Update
DSP0008 DSP-3 and DSP-4 CPU Bar Graph Anomalies
DSP0010 DSP flash issues
 

DSP-4 Digital Signal Processor

DSP0004 DSP-4 DC Converter Update
DSP0006 DSP Series Microcontroller Update
DSP0008 DSP-3 and DSP-4 CPU Bar Graph Anomalies
DSP0009 DSP-4 RS-232 Communication/Turn-Off Thump
DSP0010 DSP flash issues
 

DSP-30 Digital Signal Processor
DSP0005 DSP-30 Strain Relief Removal
DSP0006 DSP Series Microcontroller Update
DSP0010 DSP flash issues
 

DCM-1 Digital Cinema Monitor
DCM0001 DCM-1 Power Cycle Update
DCM0002 Updating Flash Firmware in a DCM
 

DCM10 / DCM10D / DCM30 / DCM30D Digital Cinema Monitor

DCM0003 DCM critical software/firmware update
DCM0004 DCM monitor loudspeaker mute or silent
DCM0005 DCM random resets, intermittent operation
 

Q-Sys
QSY003 Q-Sys Core RAM
QSY004 Q-Sys Designer spontaneous reset

QSY0006  Q-Sys Core Board Swap

QSY0007  Q-Sys Core 250i Ribbon Cable Reversal
 

Loudspeakers

HPR Series

HPR0001 Matching HPRi gain with earlier HPR versions
HPR0002 Replacing HPR 122i woofers
HPR0003 HPR153F, HPR153i, HPR122i compression drivers
HPR0004 HPR power connector upgrade
 

K Series

KSE0001 K Series Service Bulletin
 

KW Series

KWS0001 KW181 fuse update

KWS0002  KW Series Transistor and Diode Lead Breakage
KWS0003revA
 

WideLine
WLX0001 WideLine rigging hardware torque adjustment









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