QSC PowerLight Series Technical & Service Manual page 85

1
EL2257C
+
E
14 C
-
B2_P
U11:3
EL2257C
20 V
B2_N
IX2
DR2
B3_P
1
+ EL2257C
E
14
C
-
U14:3
EL2257C
IX3
DR3
Technical Service Manual
PowerLight 6.0 II, PowerLight 6.0 PFC , and PowerLight 9.0 PFC
7
EL2257C
+
E
13 9
8 C
-
U11:1 U11:2
G G
_BOP
7
+ EL2257C
E
13 9
8
C
-
U14:1 U14:2
G G
_VTOP
EL2257C
9
G
This connects to
chassis gnd at the
rear panel.
_SPK
1
2 _BGND
1 2
_SPK_GND
EL2257C
9
U13:2
G
_VBOT
PM_REF
PowerLight 9.0 PFC
Output Power Section
EL2257C
7 1
+ +
E E
13
U12:1
U12:2
C 8 C 14
- -
G
U12:3
EL2257C
7 1
+ EL2257C +
E E
13
8 14
C C
- -
U13:1
G
QTY ITEM NO. PART NO. DESCRIPTION
B1_P
30 V
B1_N
IX1
DR1
B3_P
40 V
Node N105
U13:3
"B3_N"
EL2257C
pp. 2A7 & 7B5
IX4
DR4
VENDOR
83