JVC HR-XVC20US(R) Service Manual page 34

E
HEMATIC DIAGRAM
D PCB)
HA15
HA14
HA13
HA12
HA11
HA10
HA9
HA8
HA19
HA20
WR
W835
RESET
C4039
0.1 F
W837
HA19
HA18
HA17
HA7
HA6
HA5
HA4
HA3
HA2
HA1
NOTE:THE DC VOLTAGE EACH PART WAS
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK.
E
2-22
The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only.
Note :
When replacing the parts , refer to the Parts List.
F
64M SDRAM IC
IC4005 M12L64164A-7T
0
VSS
1.2
SD_D15
DQ15
0
VSSQ
1.5
SD_D14
DQ14
2.0
SD_D13
DQ13
C4040
3.3
VDDQ
0.1 F
0.4
SD_D12
DQ12
0.5
SD_D11
DQ11
0
VSSQ
SD_D10 1.7
DQ10
0.8
SD_D9
DQ9
C4041
3.3
VDDQ
0.1 F
2.1
SD_D8
DQ8
0
VSS
0
NC NC
0
RAMDQM
UDQM
1.5
RAMCLK
CLK
R4048
3.3
2
CKE
47K
0
NC NC
0
SD_A11
A11
0.2
SD_A9
A9
0.2
SD_A8
A8
1.0
SD_A7
A7
1.0
SD_A6
A6
1.0
SD_A5
A5
0.9
SD_A4
A4
0
VSS
F
G
C4044
3.3
VDD
0.1 F
1.5
SD_D0
DQ0
C4050
3.3
VDDQ
0.1 F
0.8
SD_D1
DQ1
0.4
SD_D2
DQ2
0
VSSQ
0.5
SD_D3
DQ3
0.9
SD_D4
DQ4
C4045
3.3
VDDQ
0.1 F
1.3 SD_D5
DQ5
0.8
SD_D6
DQ6
0
VSSQ
1.3
SD_D7
DQ7
C4046
3.3
VDD
0.1 F
0
RAMDQM
LDQM
3.2
RAMWE#
WE
3.2
RAMCAS#
CAS
0.2
RAMRAS#
RAS
3.1 RAMCS1#
CS
0.5
SD_BA0
BA0
3.1
RAMCS0#
BA1
1.9
SD_A10
A10/AP
0.2
SD_A0
A0
0
SD_A1
A1
0
SD_A2
A2
0.3
SD_A3
A3
C4047
3.3
VDD
0.1 F
G
H
8
7
6
5
4
3
2
PCB130
VMC298
1
H