F1
TP4
D3
D1
6
R11
T1
C3
C2
D13
D9
C10
R13
C20
+
R1
D12
D6
R20
D10
C22
C17
R14
C19
R10
R22
R19
18
17
16
15
14
13
12
11
10
R24
D11
TP2
R16
C8
TP5
1
5
T5
10
6
TP1
8
6
7
1
R8
3
2
1
9
8
C9
B
R7
R18
T4
4
C23
R
Y
Y
B
Q3
R
D5
C26
C25
Q1
7
2
R12
L2
D4
D2
R6
6
3
9
8
T2
D7
R17
Q2
10
C1
D8
L1
HOT
220 VAC
NEUTRAL
1
2
3
4
5
6
7
R25
9
R
X
C
X
C
RAMP
INTERRUPT
GND
R
SET
R
T
C
T
PGND
OUT B
LFB OUT
OUT A
LAMP FB
PFC OUT
PDWN
V
CC
PIFB
PEAO
PVFB
ML4833
U1
V
REF
PDWN
R4
Figure 10. 220V Dimming Ballast
R3
R2
8
C7
C11
C6
R15
R5
C5
TP3
C4
R23
C14
C13
C15
C12
C16
D1
R6
Q1
4
D2
3
C1
R7
C4
C2
5
R4
DIMMER CONTROL INTERFACE SUBASSEMBLY
6
R8
R1
R5
C3
R3
3
2
+
–
U2
+
–
4
7
8
1
R2
C24
R21
C21
T1
U1
VIOLET
GRAY
ML4833
REMOTE MANUAL
DIMMER
0–10VDC
11