Acer XB270HU Service Manual page 53

08. CONVERT
6,7 +19V
R803 C805 change t o 1uF/25V
10K 1/10W 5%
- 20140206
7 VBLCTRL
R805 C805
300KOHM 1/10W
1uF 25V
R809
7 BRI_ADJ-PWM0
10K 1/10W 5%
C817
1000pF 50V
R814
300KOHM 1/10W
C814
NC/10PF 50V
R829
13.3K 1%
R831
3.9KOHM +-1% 1/8W
R828
10K 1/8W Q803
BL_ADIM
2 OUT
2N7002K
R830
300KOHM 1/10W
7 BL_BOOST
NC/300KOHM 1/10W
Location
PWM A-DIM
ㄏノOZ9998M IC
DIM 250Hz >20KHz
R806 0 NC
C819 NC 1uF Location
R823 NC 2M Ohm ㄏノOZ9998M IC
C812 220nF NC
C818 0.47uF 0.47uF
C814 NC 10pF
+19V
C801
+
R801 220UF 35V
10 OHM 1/4W
R806
0R05 1/10W
C812 R812
220N 25V 100R 1/10W 5%
C819 R823
NC/1UF
C815 C816 NC/2M +-5% 1/8W
470NF 50V 2.2UF
C818
0.47uF 16V
C820
1UF
R832
4.3KOHM +-1% 1/8W
R833
C821 NC/12KOHM +-1% 1/10W
NC/1UF
R834
NC/10K 1/8W Q804
NC/2N7002K
R835
AUO M270HTN01.0
Location
120mA/42.9V typ
6pin 4string
R815
R817
R813
R816
4CH 3CH R822
R821
R816 witch NC
CN801
R822 NC witch CN802
L801
33uH
L801 change t ype - 20131207
C802
100N 50V
APM1105NUC-TRG
R824
NC/10R
R822
NC
U801
9 8
R807 10R 1/10W 5%
VIN VREF
10 7
LPF LDR
11 6
SSTCMP ISW
12 5
PWM ENA
13 4
ISEN1 RT
14 3
ISEN2 OVP
15 2
GND ISET
16 1
ISEN3 ISEN4
OZ9998MGN
R815
6K2 1/10W 1%
R816
330KOHM 1/10W
270k
R817
3.6K
3.3k
L&T LM230WF3-S2FF L&T LM270WF5-S2CB
75mA/49.1V typ 80mA/46.5V typ
10pin 3string 10pin 4string
6.2K 9.1K 9.1K
3.6K 6.8K 5.6K
36K 30K 33K
330K NC 330K
NC 330K NC
1R NC 1R
NC witch witch
witch NC NC
D801
B3100B
1 2
Q801 R802
0R05 1/4W
+
C806 C804
2N2 50V 47UF 100V
C808
2N2 50V
R808
470OHM +-5% 1/10W
R811
C809 0.15 OHM +-1% 1/4W
390P 50V R810
0.15 OHM +-1% 1/4W
R818 1R 1/10W 5%
ISEN1
R826
NC/0R05 1/10W R819 1R 1/10W 5%
ISEN2
R827
NC/0R05 1/10W R820 1R 1/10W 5%
ISEN3
R825
NC/0R05 1/10W R821 1R 1/10W 5%
ISEN4
R851
0R05OHM1/8W
R852
0R05OHM1/8W
GND
C803 C810
470NF 50V NC
R804
C807 C813
1 MOHM +-1% 1/8W
470NF 50V NC
C811
R813
30K 1/10W 1% 100pF 50V
VLED
CN801
NC/CONN
ISEN1 1
2
ISEN2
3
4
5
6
7
8
9
ISEN4
10
ISEN3
CN802
CONN
6
ISEN1
ISEN2 5
4
VLED
3
2
ISEN4
ISEN3 1
CN801 pin1 to pin6 SW A P - 20140106