LG TU550 Service Manual page 142

7. CIRCUIT DIAGRAM
1 1 2 2 3 3
A A
HP_SP_SEL NC (HP) NO (SP)
L ON OFF
H OFF ON
B B
C C
D D
E E
SPK_AMP_EN
F F
1 1 2 2 3 3
LG(42)-A-5505-10:01 LG(42)-A-5505-10:01
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4 4 5 5 6 6 7 7 8 8
Audio AMP
C210
8200p
U507 TPA2010D1YZF
R202 C211 12n 62K C1 B1 R213
HPH_R IN- VDD +VPWR
R203 B2
1K PVDD 0
C212
12n
62K A1
IN+
R204 A3
VO- SPK_R-
C2 C3
_SHDN VO+ SPK_R+
C213 C1820
10u
1u
8200p
C214
U506 TPA2010D1YZF
R206 C215 12n
62K C1 B1
HPH_L IN- VDD +VPWR
R207 B2
1K PVDD
C216
12n
62K A1
IN+
R208 A3
VO- SPK_L-
C2 C3
_SHDN VO+ SPK_L+
C219 C1819
10u
C288 1u
1000p
Microphone
MIC
MICBIAS
C217 C218
10u 47p
SP0102BE3
5
G3
U303 4
PWR
3
G2
2
G1 22n C222
1
MIC1P
OUT
4 4 5 5 6 6 7 7 8 8
9 9 10 10 11 11 12 12
SDRAM_DATA(0:31)
TP311
SDRAM_DATA(0) U4
DQ0
SDRAM_DATA(1) T4
DQ1
SDRAM_DATA(2) T5
DQ2
SDRAM_DATA(3) V5
DQ3
SDRAM_DATA(4) U5
DQ4
SDRAM_DATA(5) T6
DQ5
SDRAM_DATA(6) V6
DQ6
SDRAM_DATA(7) U7
DQ7
SDRAM_DATA(8) T9
DQ8
SDRAM_DATA(9) T10
DQ9
SDRAM_DATA(10) V10
DQ10
SDRAM_DATA(11) T11
DQ11
SDRAM_DATA(12) U11
DQ12
SDRAM_DATA(13) V11
DQ13
SDRAM_DATA(14) T12
DQ14
SDRAM_DATA(15) U12
DQ15
SDRAM_DATA(16) P3
DQ16
SDRAM_DATA(17) R3
DQ17
SDRAM_DATA(18) P4
DQ18
SDRAM_DATA(19) R4
DQ19
SDRAM_DATA(20) P5
DQ20
SDRAM_DATA(21) R5
DQ21
SDRAM_DATA(22) P6
DQ22
R6
SDRAM_DATA(23)
DQ23
SDRAM_DATA(24) P9
DQ24
SDRAM_DATA(25) P10
DQ25
SDRAM_DATA(26) R10
DQ26
SDRAM_DATA(27) P11
DQ27
SDRAM_DATA(28) R11
DQ28
SDRAM_DATA(29) P12
DQ29
SDRAM_DATA(30) R12
DQ30
SDRAM_DATA(31) R13
DQ31
U8
SDRAM_DQM(0) DQM0
T8
SDRAM_DQM(1) DQM1 U302
V7
SDRAM_DQM(2) DQM2
U9
SDRAM_DQM(3) DQM3 TY90009800COGG
EBI2_DATA(0:7) TP300
EBI2_DATA(0) M11
IO1
EBI2_DATA(1) M13
IO2
EBI2_DATA(2) L10
IO3
EBI2_DATA(3) L12
IO4
EBI2_DATA(4) J9
IO5
EBI2_DATA(5) H12
IO6
EBI2_DATA(6) H10
IO7
EBI2_DATA(7) G12
IO8
A1
NC1
A2
NC2
A3
NC3
A4
NC4
A11
NC5
A12
NC6
A13
NC7
A14
NC8
B1
NC9
B2
NC10
B3
NC11
B4
NC12
B11
NC13
B12
NC14
B13
NC15
B14
NC16
C1
NC17
C2
NC18
C5
NC19
C13
NC20
C14
NC21
D1
NC22
D14
NC23
E1
NC24
E7
NC25
E8
NC26
E9
NC27
E10
NC28
E11
NC29
Section Section
Designer Designer
Checked Checked
Approved Approved
9 9
- 143 -
13 13 14 14 15 15 16 16
A A
SDRAM_ADDR(0:12)
C3 TP309 SDRAM_ADDR(0)
A0
D3 SDRAM_ADDR(1)
A1
E3 SDRAM_ADDR(2)
A2
E2 SDRAM_ADDR(3)
A3
D12 SDRAM_ADDR(4)
A4
C12 SDRAM_ADDR(5)
A5
D11 SDRAM_ADDR(6)
A6 B B
C11 SDRAM_ADDR(7)
A7
D10 SDRAM_ADDR(8)
A8
C10 SDRAM_ADDR(9)
A9
E4 SDRAM_ADDR(10)
A10
D9 SDRAM_ADDR(11)
A11
C9 SDRAM_ADDR(12)
A12
L6
_WP RESOUT_EBI2_N
K6 VREG_MSMP_2.7V
_WEN EBI2_WE_N
D5
_RAS SDRAM_RAS_N
D6 TP308
_WED SDRAM_WE_N
E6
_CAS SDRAM_CAS_N
C8
CLK SDRAM_CLK
E5 TP304
_CS SDRAM_CS_N(0)
M3
ALE NAND_ALE
M4
CLE NAND_CLE C C
M9
_CE NAND_CS_N
M10 TP303
_RE EBI2_OE_N
M2
RY__BY NAND_READY
D8 TP310
CKE SDRAM_CLK_EN
C4 TP307 VREG_MSME_1.8V
BA0 SDRAM_ADDR(13)
D4
BA1 SDRAM_ADDR(14)
C7
VCCD1
D2
VCCD2
D13
VCCD3
V3
VCCD4
V8
VCCD5
V12
VCCD6
V4 VREG_MSMP_2.7V
VCCQD1
V9
VCCQD2 D D
R221
K12
VCCN2
0
C6
VSS1 C208 C209
F7
VSS2 0.1uF 0.01u
G2
VSS3
G13
VSS4
L13
VSS5
P2
VSS6
P13
VSS7
R8
VSS8
U2
VSS9
U6
VSS10
U10
VSS11
U13
VSS12
E E
D7
NC132
J12
NC131
K4
NC71
K5
NC72
K9
NC73
K10
NC74
K11
NC75
K13
NC76
K14
NC77
L1
NC78
L2
NC79
L3
NC80
L4
NC81
L5
NC82
L9
NC83
L11
NC84 F F
L14
NC85
M5
NC86
M6
NC87
M12
NC88
N2
NC89
C C
D D
E E
Date Date Sign & Name Sign & Name Sheet/ Sheet/
Sheets Sheets
10/31 TU550
CU500 CU500
MODEL MODEL
SH NAM SH NAM
2005 2005
3/6 3/6
DRAWING DRAWING
AUDIO/MEMORY AUDIO/MEMORY
NAME NAME
DRAWING DRAWING
LG Electronics Inc. LG Electronics Inc.
MAIN_1.2
NO. NO.
LG Electronics Inc. LG Electronics Inc.
LGE Internal Use Only