Velas VDM-MB434TV, Service Manual

Page: 17 / 33

SCHEMATIC DIAGRAM
CD SERVO BOARD 1/4 Section
16
5 5
4 4
3 3
2 2
1
D
D
C
C
B
B
A
A
URST#
URST#
V18 VCC AVCC DV33 RFV33
GND
DV33
VCC
3.3V
V18
AVCC MO_VCC
RFV33
VCC
VCC
URST#
[2,6]
V18
[2]
VCC
[2,3,4,5,6]
AVCC
[2]
GND
[2,3,4,5,6]
DV33
[2,3,4,5]
RFV33
[2]
MT1389HD_HD60_HDMI_V3S1
The
original
released.
MT1389HD DEVICE
Date
MT1389/HD
(LQFP256)
DVD
for
SANYO
HD65
PUH
TYPE
Digital
1.8V
Digital
3.3V
2
RF,
SERVO
&
MPEG
-
MT1389HD
OP
AMP.
NAME DV33
History
Audio
+12V,-12V
Digital
5V
Audio
DAC
Rev
Audio
5V
MT1389HD
VCC
V1
Digital
3.3V
SDRAM
SD33
VCC_AUDIO
P#
1
INDEX
&
POWER,
RESET
4
VIDEO
OUT
SUPPLY
3
MEMORY
-
SDRAM,
FLASH/EEPROM
V18
+12V,-12V
AVCC
PICKUP
HEADER
RF
5V
5
AUDIO
DAC
PCM1742
AND
AUDIO
OUT
+5VV
Video
5V
6
HDMI
MT1392
HDMI
+
Card
Reader
Integrated
Design
V2
MT1392
DVDD18
92_DV33
MT1392
D36 1N4001 D36 1N4001
1
2
+
CE54 220uF/16V
+
CE54 220uF/16V
C162 0.1uF C162 0.1uF
D35 1N4001 D35 1N4001
2
D37
1N4148
D37
1N4148
1 2
L50
601LB
L50
601LB
C9 0.1uF C9 0.1uF
CB12 0.1uF CB12 0.1uF
L55
FB
L55
FB
L53
FB
L53
FB
R235 10K R235 10K
L6
601LB
L6
601LB
+
CE56 10uF
+
CE56 10uF
+
CE52 220uF/6.3V
+
CE52 220uF/6.3V
U20
1117-1.8
U20
1117-1.8
OUT
3
IN
2
GND
1
U21 1117-3.3 U21 1117-3.3
OUT
3
IN
2
GND
1
L54
FB
L54
FB
+
CE55 220uF/16V
+
CE55 220uF/16V
CB17 0.1uF CB17 0.1uF
C10 222P C10 222P
+
CE1 220uF/16V
+
CE1 220uF/16V