Service Manuals, User Guides, Schematic Diagrams or docs for : BEKO TV BEKO 20LCD 20LCD_MCU
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1 2 3 4 5 6
+5V_M 2.5V_M
U503 TP217 A2.5V_M
MC33375ST-2.5 TESTPAD
1 VIN VOUT 3
L500 L502
FERRIT BEAD C507 FERRIT BEAD C510 C511 C512
GND
C504 2 22uF
22uF ON/OFF 22uF 0.1uF 0.1uF
22uF/10V SOT223 22uF/10V
D2.5V_M
4
GND GND
GND
L503
FERRIT BEAD C513 C514 C515
GND
D 22uF 0.1uF 0.1uF D
3.3V_M
U504 TP218
MC33375ST-3.3 TESTPAD
TP216 1 VIN VOUT 3 GND
TESTPAD L501 D3.3V_M
GND
FERRIT BEAD C508
C505 2 22uF
22uF ON/OFF L504
22uF/10V SOT223 22uF/10V FERRIT BEAD C516 C517 C518 C519 C520
D3.3V_M
4
RN500 10K GND 22uF 0.1uF 0.1uF 0.1uF 0.1uF
1 8 GND 10V
2 7 HDATA[0..3]
HDATA[0..3]
3 6 HDATA0
4 5 HDATA1 GND GND
HDATA2
HDATA3
1 8 HCLK/SCL
2 7 HFS/SDA
HCLK
3 6 HFS
4 5 /IRQ
/IRQ
PNL_EN
PNL_EN
RN501 10K
Q500
2N7002 A2.5V_M D2.5V_M D3.3V_M
R500
3.3K D3.3V_M D2.5V_M 3.3V_M
26
57
14
68
16
43
70
1
D3.3V_M C509
U501 A[0..18]
VDDA2.5
VDDA2.5
VDD2.5
VDD2.5
VDD3.3
VDD3.3
VDD3.3
VDD3.3
HDATA0 17 P0.0 A19/P4.4 63 3.3V_M C506 0.1uF
8
HDATA1 18 P0.1 A18/P4.1 64 A18 GND
R502 R503 HDATA2 19 66 A17 U505
20 P0.2 A17/P4.0 0.1uF 20 21 CN503
D500 HDATA3 A0 D0
VCC
P0.3 A0 DQ0
8
Q501 3.3K 10K BAS40-05 HCLK/SCL 21 65 A16 GND A1 19 22 D1 TP151 /RST GND TP182
22 P0.4 A16 67 U502 18 A1 DQ1 23 TP152 D3 16 17 D2 TP181
C SDA5V 2N7002 HFS/SDA
P0.5 A15
A15 A2
A2 DQ2
D2
15 18 C
SDA 23 71 A14 A0 20 21 D0 A3 17 25 D3 TP153 D4 D1 TP180
VCC
P0.6 A14 A0 IO1 A3 DQ3 14 19
SCL5V SCL 24 P0.7 A13 73 A13 A1 19 A1 IO2 22 D1 A4 16 A4 DQ4 26 D4 TP154 D5 13 20 D0 TP179
SC2_St SC2_St
A12 72 A12 A2 18 A2 IO3 23 D2 A5 15 A5 DQ5 27 D5 TP155 D6 12 21 A0 TP178
/RESET /RESET 44 P1.0 A11 79 A11 A3 17 A3 IO4 25 D3 A6 14 A6 DQ6 28 D6 TP156 D7 11 22 A1 TP177
SC1_St SC1_St 45 P1.1 A10 83 A10 A4 16 A4 IO5 26 D4 A7 13 A7 DQ7 29 D7 TP157 A2 10 23 A10 TP176
3
SC1_FBL +5V /SC1_FBL 46 77 A9 A5 15 27 D5 A8 3 TP158 A3 TP175
/PSEN
SC1_FBL 47 P1.2 A9 75 A8 A6 14 A5 IO6 28 D6 A9 2 A8 TP159 A4 9 24 A11 TP174
R501 1 Q502 PNL_EN 48 P1.3 A8 A7 13 A6 IO7 29 D7 A10 31 A9 TP160 A5 8 25 A9 TP173
R505 BC848B /BKLT_EN 49 P1.4 74 A7 A8 3 A7 IO8 A11 1 A10 TP161 A6 7 26 A8 TP172
10K 1K P1.5 A7 A8 A11 6 27
R504 /STDBY 50 P1.6 A6 76 A6 A9 2 A9 A12 12 A12 TP162 A15 5 28 TP171
4.7K 62 78 31 4 TP163 WE A7 TP170
2
A5 A10 A13
P1.7 A5 A10 A13 4 29
3
MSRES 10K A4 80 A4 A11 1 A11 A14 5 A14 TP164 A12 3 30 A13 TP169
R507 TP215 34 82 A3 A12 12 A15 11 TP165 A17 A14 TP168
Q503 P3.0 A3 A12 A15 2 31
3.3V_M
L508FERRIT BEAD 1 /IRQ 35 P3.1 A2 2 A2 A13 4 A13 A16 10 A16 TP166 A18 1 32 A16 TP167
BC848B GND IR 36 3 A1 A14 11 A17 6
LED_GRN 37 P3.2 A1 5 A0 A16 7 A14 A18 9 A17 HEADER2X16
CN501 TP144 38 P3.3 A0 10 A15 A18 Service connector_Flash programing
2
LED_RED A17
GND MUTE 39 P3.4 A16 30
1 /STDBY TP150 40 P3.5 4 D7 3.3V_M A15 30 9 /PSEN 32 CE
2 P3.6 D7 CS1 NC OE
3 LED_RED TP146 41 P3.7 D6 6 D6 WE 7 WE
VSS
4 IR TP147 D5 8 D5 6 CS2
KEY_PMU TP148 KEY_PMU 28 10 D4
5 P2.0 D4 R521
6 KEY_DRL KEY_DRL 29 P2.1 D3 12 D3 /RAMRD 32 OE 29LV040
VSS
30 11 D2 5 1K
24
/RAMWR
7 31 P2.2 D2 9 D1
WE
B7B R519 R520 P2.3 D1 7 D0 K6T1008V2E-TB 3.3V_M
Keypad Connector TP149 1K 1K /RAMRD 51 D0
24
/RAMWR 52 P4.2
P4.3
D2.5V_M O_VS 33 P4.7/VS/OE GND
L509 C500 0.1uF
FERRIT BEAD CVBS_Out 25 CVBS GND
O_HS 32 HS/SC D[0..7]
GND GND 3.3V_M /RST R526 53
RST D3.3V_M
1K
U500 C526 C525 XTAL2 54
0.1uF
2 R525 4.7nF XTAL1 55 XTAL2 D501
VCC XTAL1
47R TP502
B RSTN 1 GND 58 R PSEN 81 /PSEN EVSS B
X500 C501 C502 59 G XROM 13 TP500 BAS40
1
GND 3 60 B 1
33pF 33pF 61
VSSA
VSSA
BLANK/COR
VSS
VSS
VSS
VSS
DS1818B EVCC U506
6MHz 8 1
Reset Circuit GND SDA5550 7 VCC A0 2
GND 6 WP A1 3
27
56
15
42
69
84
R527 SCK A2
5 SI VSS 4
100R
GND M24C16-RMN1T
+5V GND TP501 TP503
+5V GND
Q505 +5V 1 1
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