Service manual

DGND
DGND
DGND
DGND
DGND
DGND
DGND
T
DGND
D2
D1
G
S2 S3
D4 D3
S1
T
DGND
DGND
DGND
DGND
DGND
DGND
DGND
VIN
PGOOD
SW
GND
FB
PVIN
DGND
T
DGND
DGND
DGND
T
T
T
DGND
T
T
DGND
T
DGND
DGND
DGND
DGND
DGND
GND/ADJ
OUT
VIN
4
T
T
GND/ADJ
OUT
VIN
4
DGND
DGND
T
T
T
DGND
D1B
D1A
G2
G1 S2
D2B D2A
S1
DGND
T
DGND
DGND
DGND
DGND
DGND
DGND
DGND
T
BS IN SW COMP
FB
SS
GND
EN
DGND
GND/ADJ
OUT
VIN
4
GND/ADJ
OUT
VIN
4
VCC
LGATE
GNDPHASE
BOOT FB
UGATE
VIN
DGND
FB
GND
SW
EN IN
IN OUT
GND
T
DIMMING NEEDED PWMOUT,R858 IS 0 OHM,R856 IS 22 KOHM
111mA
172mA
680mA
469mA
210mA
R808/R810 FOR MEMC
VOUT=1.22X(24+2.7)/2.7
POWER PART
L817 & L818 USED NO-Q800
R894 & R895 USED TOGETHER Q800
R896 FOR 12V-SUPPLY
R886 & D810 FOR 24V-SUPPLY
DIMMING NEEDED PWMOUT,NO D807 & C811
VCC 12V 24V
R830 10K 47K R832 10K 12K
VCC SUPPLYS RT8110B
VCC
R830
10K
R832
10K
D810
10V
NC
1K
R860
LL4148
D807
R856
56K
R858
330R
R861
1K
C854
220U
16V
2U2
C811
5VAIN
R859
100K
5VAIN
DIMMING
+12V
16V
220U
C852
R896
33R
NC
R886
33R
RLZ5B6
D800
R895
0R
NC
0R
R894
NC
0R
R809
220R
L819
NC
L820
10UH
NC
L803
30R
R855
100
BRI_ADJ-PWM0
16V
220U
C846
C845 470U
6V3
12
4 6 8
12 10
3 5 7 9
11
P800
6V3
100U
C860
NC
C859
0.1U
NC
C858
4U7
NC
C857
100P
NC
3
2
1
U810
AP2120
NC
3 2
1
4 5
U809
MP1540
NC
R893
0R
10K/NC
R891
R890
10K
NC
R889
2K
NC
36K
R887
NC
R888
36K
NC
R892
10K
NC
6V
STBY_5V
+3_3V-STB
+3_3VSTB
ON/OFF_PBACK
20K
R852
0.1U
C819
2U2
C813
C830
0.1U
1U
C809
1 2 36
5 8
4
7
U805
RT8110B
2U2
C812
C828
0.01U
0.01U
C827
4
3
2
1
AS1117N-2.5
U802
C815
220U
25V
C816 220U
16V
0.1U
C821
C802 0.01U
R831 10K
10U
C800
C843 220U
35V
C844
220U
35V
1U
C810
0.1U
C837
R833 300R
3K9
R866
680R
R867
LL4148
D808
NC
R820
33R
POWER_ON/OFF
PW-ON/OFF-INV
P_ON/OFF
C850
10U
10U
C847
10U
C851
10U
C849
10U
C848
10U
C807
2K2
R841
47K
R837
R846 10K
R847
100R
1
2
3
4
U808
LD1117S18
R814
0R
10R
R853
0R
R848
R857
470R
L814
10UH
10UH
L813
+3V3
RLZ5B6
D809
D806
SR34
C820
390P
4700P
C818
15K
R815
2K7 R816
R817
24K
8K2 R884
R883
10K
1 2 36
5 8
4
7
U804
MP1593DN
10K
R882
L816
392170-00X
+24V/12V
+24V/12V
R808
0R
NC NC
R810
0R
VCC-PANEL
NC
0R
R806
100K
R885
NC
+24V/12V
+3_3VSTB
+3_3VSTB
3V3STB/5VSTB
NC
0.1U
C824
+24V/12V
1K
R849
4K7
R851
7 8
4
2
3
5 6
1
Q816
D13N03LT
30RL802
NC
L815
10UH
VDDC-1V28
+3V3
+3_3VSTB
10K
R850
NC
P_ON/OFF
R880
2K2
NC
R876
2K2
10R
R828
220R R829
NC
+3V3
+3_3VSTB
+1V8
VCC-PANEL
+12V
+24V/12V
+2V5
5VAIN
VCC
10K
R839
NC
V_AUDIO
+12V
3V3STB/5VSTB
P_ON/OFF
BL_ON/OFF
+24V/12V
+3V3_SBY/5VMST
R811 0R
L801 30R
+3V3_SBY/5VMST
NC
1UC823
1
2
3
4
U800
LD1117S33
5VAIN
E
C
B
C124ET
Q806
5VAIN
+24V/12V
5V-DDR
+3V3
4
3
2
1
NC
LD1117S33
U801
R881
0R
R818 3R3
2W
0.1U
C840
2U2
C814
BL_ON/OFF
10R
R879
5VAIN
R834
5K1
3K3 R844
0.01U
C838
NC
R813
2K2
ON_PANEL
0R
R877
B
C
E
Q808
BT3904
10K
R836
5VAIN
LL4148
D805
0.1U
C836
R835
10K
VDDC-1V28
+3V3_SBY/5VMST
E
C
B
NC
BT3904
Q805
1K
R838
NC
NC
R875
0R
R874
0R
VBR_OUT
0R
R854
NC
3V3STB/5VSTB
C
E
B
BT3906
Q811
Z819
+1V8
0.1U
C841
C839
0.1U
3V3STB/5VSTB
100R R868
0.1U
C835
0.1U
C834
0.01U
C833
E
C
B
BT3904
Q809
+12V
E
C
B
BT3904
Q807
5VAIN
+3V3
0R
R807
+3V3
C808
4U7
Z808
0.01U
C832
0.1U
C831
100K
R845
4
1 2 3
6 5
MP2127
U803
0.1U
C829
10R R843
S
D
G
PMV65XP
Q813
0.1U
C826
+2V5
0.1U
C825
NC
2U2
C804
R821
47K
NC
7 8
4
2
3
5 6
1
NC
Q800
PMK50XP
B
C
E
NC
Q802
C124ET
NC
4U7
C803
NC
R819
10K
NC
0R
R801
NC
0R
R800
1000P
C817
PWR_DET
POWER_ON/OFF
+3V3
5VAIN
DIMMING
VBR_EXT
DIM
DIM
E
C
B
C124ET
Q810
+3V3
R878
10K
DGND
DGND DGND
DGND
BL_ON/OFF
30R
L818
L817
30R
C822
0.1U
+12V
+24VIN
5VAIN
C855
0.47U
D811
MBRX14
NC
STBY_5V
+12V