QSC PowerLight3 Series - Schematic Sheet AMP CH-A, PL380 from February 2008

88 QSC Audio Products, LLC
Components changed since prior
version are highlighted in yellow.
Signal Path (linear)
Signal Path (PWM)
CLIM-A
-14V
+14V
+5V:LIN
-14V
A-LIM
+5V:LIN +5V:LIN
A-MUTE-LO
-5V:LIN
LIMITER-A
-14V
+14V
IN-A-POS
+14V
IN-A-REF
OFFSET-A
-5V:SW
-5V:SW
OUT-A
CLIP-A
CL-A-ON
-5V:LIN CLIM-A
PS-LIM
+5V:LINOC-LIM-AZOB-A +14V A-THERM
VMON-A
+5V:SW +5V:SW
CLK-B
RUN-B-LO
SYNC
CLK-A
RUN-A-LO
OC-FB-A
SW-A
CLK-A
+5V:SW
+5V:SW
+5V:SW
VCL-P VCL-N
AMP_TRIG_A
+5V:SW
AMP_TRIG_B
+5V:SW
SW-A
A-HI-25
A-HI-S
+180
-14V
OUT-A
+14V
IMON-A
+14V
A-25V-LO
FB-A
-5V:LIN
OC-FB-A
-14V
+14V
OC-LIM-A
+5V:LIN
-180
EMI_G
ZOB-A
OUT-A
BR-POS
BR-NEG
EMI_G
Schematic sheet AMP CH-A, PL380 from February 2008–