Led Driver - Philips 22PFT4031/12 Service Manual

Circuit Diagrams and PWB Layouts
10-2-2

LED Driver

LED DRIVER
A02
+18V
C8601 + C8605
330UF 35V 0.1uF 50V
R8602
NC
LED-
Vcc2
U8601
PF7708BS
1 8
C8602
LED FB
2 7
220nF50V
VCC GM
3 6
CS/OVP DIM
4 5
OUT OUT GND
C8606
1NF
R8652 R8653
1.2R 1% 1.2R 1%
TPN16.3E LA 10.
L8602
47uH
OUT
R8616
0 OHM +-5% 1/8W R8604
33R 1/8W 5%
D8603 R8609
R8617 IN4148W RHG 10R 1/8W 5%
62K 1/8W 1%
R8647
10K OHM +-5% 1/8W
R8608
4.7KOHM +-1% 1/8W
DIM
C8607 R8603
220pF 50V 33K 1/8W 5%
C8603 C8610
22pF 50V
47nF 50V
R8654 R8655 R8656
1.2R 1% 1.2R 1% 1.5R 1%
EN 48
R8615 C8617
22K 1/4W 100PF 500V
FB8605
BEAD
1 2 1 2
D8601
SR506
D8602 + +
1N4148
Q8601
AOD2922
ZD8601
BZT52-B18
ZD8602
BZT52-B18
A d d O N / O F F F u n c t i o n
R8601 +12V
0R05
ON/OFF
R8605
1K 1/8W
R8606
330K 1/8W 5%
back to
2016-Oct-28
div.table
VLED+
C8621 R8612 R8611 C8623
0.1uF 50V 100K NC NC
D8604
IN4148W RHG
Q8603
DTA144WN3/S
Vcc2
C8604 C8611
0.47UF 50V 0.47UF 50V
Q8602
2N7002K
C8609
0.1uF 50V
LED DRIVER
A02
CN8602
CONN
VLED+
1
2
3
4
5
6
LED-
CN8601
NC/CONN
1
2
3
2015-10-24
715G7734
20060_501.eps