Sharp LC-26SH12U - 26" LCD HDTV Service Manual page 34

A B
8
7
6
5
4
3
FROM/TO POWER3
+3.3V
VDDC_1.0V
2
GND
+2.5V_IO
MEM[1.8V]
1
A B
H-3
C
SDRAM SCHEMATIC DIAGRAM
ATSC/CLEAR CABLE ASIC IC
IC2401 X242 (5/14 SDRAM)
0 0
MEM_DQA0
R24 DQA0 MAA0 U26
MEM_DQA1 0 0
P24 DQA1 MAA1 V24
MEM_DQA2 0 0
P25 DQA2 MAA2 W26
MEM_DQA3 0 0
P26 DQA3 MAA3 T25
MEM_DQA4 0 0
N24 DQA4 MAA4 T24
0 0
MEM_DQA5
M24 DQA5 MAA5 Y26
MEM_DQA6 0 0
M25 DQA6 MAA6 W24
MEM_DQA7 0 0
M26 DQA7 MAA7 Y25
MEM_DQA8 0 0
L25 DQA8 MAA8 T26
MEM_DQA9 0 0
L26 DQA9 MAA9 V26
MEM_DQA10 0 0
K24 DQA10 MAA10 V25
MEM_DQA11 0 0
K25 DQA11 MAA11 Y24
0 0
MEM_DQA12
K26 DQA12 MAA12 U24
MEM_DQA13 0 0
J26 DQA13 MAA13 U25
MEM_DQA14 0 0
H24 DQA14 MAA14 W25
MEM_DQA15 0 0
H25 DQA15 MAA15 AA26
0
RASA# AC26
MEM_DQM0# 0 0
L24 DQMA#0 CASA# AA24
MEM_DQM1# 0 0
H26 DQMA#1 WEA# AA25
0
CSA# AB25
MEM_QS0 0 0
N25 QSA0 ODTA AB24
0 0
MEM_QS0#
N26 QSA0# CKEA AB26
MEM_QS1 0 0
J24 QSA1 CLKA R26
MEM_QS1# 0 0
J25 QSA1# CLKA# R25
C2462
1.8
MVREFD G25
3.3 1.8
E24 PESD_1 MVREFS G26
R2412 R2415
3.3 0
AB23 PESD_2 MEMTEST AC25
0 15 +-1% 15 +-1%
TEST_YCLK AD26
B2405
1.0
FCM1608KF-151T06 AC24 MPVDD
0
AD25 MPVSS
1.8 1.8
R23 VDDRH0 VDDR1_0 D20
0 1.8
T23 VSSRH0 VDDR1_1 D21
1.8
VDDR1_2 D22
1.8
VDDR1_3 F23
1.8
VDDR1_4 G23
1.8
VDDR1_5 G24
1.8
VDDR1_6 H23
1.8
VDDR1_7 K23
1.8
VDDR1_8 U23
1.8
VDDR1_9 V23
C2458 0.1 B 2.5 1.8
D24 MEM_IO2.5_1 VDDR1_10 W23
C2457 0.1 B 2.5 1.8
L23 MEM_IO2.5_2 VDDR1_11 Y23
C2459 0.1 B 2.5 1.8
AC23 MEM_IO2.5_3 VDDR1_12 AC19
1.8
VDDR1_13 AC20
0 1.8
J23 VSSR_MEM_ST_A1 VDDR1_14 AC21
0 1.8
M23 VSSR_MEM_ST_A0 VDDR1_15 AC22
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D E
(DIGITAL PCB)
512Mbit DDR2 SDRAM IC
IC2402
0
MEM_AA0 MEM_AA15
L2
MEM_AA1 MEM_AA14 0
L3
MEM_AA2
MEM_AA3 MEM_AA12 0
R2
MEM_AA4 MEM_AA11 0
P7
0
MEM_AA5 MEM_AA10
M2
MEM_AA6 MEM_AA5 0
P3
MEM_AA7 MEM_AA7 0
P8
MEM_AA8 MEM_AA2 0
P2
MEM_AA9 MEM_AA6 0
N7
MEM_AA10 MEM_AA8 0
N3
MEM_AA11 MEM_AA4 0
N8
0
MEM_AA12 MEM_AA3
N2
JG2411
MEM_AA13 MEM_AA9 0
M7
MEM_AA14 MEM_AA1 0
M3
MEM_AA15 MEM_AA0 0
M8
0
MRAS# MCLK#
K8
MCAS# MCLK 0
J8
MRWE#
MCS# MCKEN 0
K2
MEM_ODT
MCKEN
MCLK MCS# 0
L8
MCLK#
MRWE# 0
K3
0.1 B
C2479 0.1 B MRAS# 0
K7
R2416 15 +-1%
R2417 10K MCAS# 0
L7
R2418 1K+-1%
R2419 1K+-1%
MEM_DQM0# 0
F3
MEM_DQM1# 0
B3
C2463 0.1 B MEM_ODT 0
K9
C2464 1 B
C2465 0.1 B MEM_QS0 0
F7
C2466 1 B MEM_QS0# 0
E8
C2467 0.1 B
C2468 1 B
C2469 0.1 B MEM_QS1 0
B7
C2470 1 B MEM_QS1# 0
A8
C2471 0.1 B
C2472 1 B
C2473 0.1 B 1.8
J2
C2474 1 B
C2475 0.1 B 0
NC A2
C2476 1 B 0
NC E2
C2477 0.1 B 0
NC L1
C2478 10 C 0
NC R3
0
NC R7
0
NC R8
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
D E
F G
HYB18T512161BF-25
0
MEM_DQA14
BA0 DQ15 B9
0 MEM_DQA12
BA1 DQ14 B1
0 MEM_DQA15
DQ13 D9
0 MEM_DQA9
A12 DQ12 D1
0 MEM_DQA8
A11 DQ11 D3
0
MEM_DQA13
A10/AP DQ10 D7
0 MEM_DQA11
A9 DQ9 C2
0 MEM_DQA10
A8 DQ8 C8
0 MEM_DQA6
A7 DQ7 F9
0 MEM_DQA7
A6 DQ6 F1
0 MEM_DQA2
A5 DQ5 H9
0 MEM_DQA3
A4 DQ4 H1
0
MEM_DQA4
A3 DQ3 H3
0 MEM_DQA0
A2 DQ2 H7
0 MEM_DQA5
A1 DQ1 G2
0 MEM_DQA1
A0 DQ0 G8
1.8 C2492 1 B
CK VDDQ1 A9
1.8 C2481 0.1 B
CK VDDQ2 C1
1.8 C2493 0.1 B
VDDQ3 C3
1.8 C2482 0.1 B
CKE VDDQ4 C7
1.8 C2494 1 B
VDDQ5 C9
1.8 C2483 0.1 B
VDDQ6 E9
1.8 C2495 0.1 B
CS VDDQ7 G1
1.8 C2484 0.1 B
VDDQ8 G3
1.8 C2496 1 B
WE VDDQ9 G7
1.8 C2485 0.1 B
VDDQ10 G9
RAS
1.8 C2497 1 B
VDD1 A1
1.8 C2486 0.1 B
CAS VDD2 E1
1.8 C2498 1 B
VDD3 J9
1.8 C2487 0.1 B
VDD4 M9
1.8 C2499 1 B
LDM VDD5 R1
UDM
B2406
1.8
VDDL J1
0 FCM1608KF-151T06
ODT VSSDL J7
0
LDQS VSSQ1 A7
0
LDQS VSSQ2 B2
C2490
0
VSSQ3 B8
0 6.3V 220 MZA
VSSQ4 D2
0
UDQS VSSQ5 D8
0
UDQS VSSQ6 E7
0
VSSQ7 F2
0
VSSQ8 F8
0
VREF VSSQ9 H2
0
VSSQ10 H8
NC#A2
0
NC#E2 VSS1 A3
0
NC#L1 VSS2 E3
0
NC#R3 VSS3 J3
0
NC#R7 VSS4 N1
0
NC#R8 VSS5 P9
F G
H
8
7
6
5
4
3
2
PCBDH0
1
CEF276
H
H-4