Philips MCD708 Service Manual page 28

www.freeservicemanuals.info
CIRCUIT DIAGRAM - DVD MPEG BOARD
EJS89D18
MPEG board is not repaired,program for referrence only.
1 INDEX & POWER, RESET
2 RF, SERVO & MPEG
3 MEMORY - SDRAM, FLASH/EEPROM
4 VIDEO OUT
5 AUDIO DAC WMA8746&WMA8720 AND AUDIO OUT
NAME TYPE
VCC Digital 5V
DV33 Digital 3.3V
RFV33 Servo 3.3V
LDO_AV33 Laser Diode 3.3V
AVCC RF 5V
V18
Digital 1.8V
SD33
Digital 3.3V
+12V
Audio +12V
-12V
Audio -12V
AVDD
Audio 5V
DVDD
Audio 5V
J4
+12V FB L5 +P12V
1
JUP L10
+P5V
VCC 2
3
PV33
V33 4
L36FB
5
5x1 W/HOUSING
DIP5/W/H/P2.0
TP23
TP28
TP79
TP29
TP26
VCC_AUDIO
L6
VCC
4.7
CB10 + CE9
0.1uF 220uF/10V
AVCC
L7
VCC
FB/1206
VCC
VCC
CB14 + CE14
0.1uF 220uF/16V
11 - 4
- MT1389E
DEVICE
SUPPLY
MT1389E
MT1389E
VCC
PICKUP HEADER
MT1389E
SDRAM
OP AMP.
OP AMP.
Audio DAC
V33
Audio DAC
+5VV
L30
VCC
+5VV V33
FB
+
CE34
+ CE33
100uF/10V CB67
100uF/10V
CB13
0.1uF
0.1uF
V33
RFV33
L8
V33
RFV33
FB
CE12
+
CB12 100uF/10V
0.1uF
V33
CB13
0.1uF
23/1/2013
Rev
V1 The original released.
Change CE11 from 10uF to 100uF
V2
Change C3 from C to 2200pF
Change C2 from 0.1uF to C
Change R10,r15 from 750k to 680k
Change R17,R19 from 390k to 150k
Add C74 2200pF
Change R37 from 0 to R
Change R38 from 0 to R
Change C32 from 15nF to C
Change PIN 47 from LIMIT to ADIN
Add CE1 10uF
Change R15 from 1.5k to 1.8k
Remove 74H04
Change the LIMIT singalfrom PIN 46 to PIN136
Change R4,R5,R6,R8,R12 from 1k to R
Chang the TRIN&TROUT pull high power from 5V to 3V3
Add LC circuit
Change R67 from R to 10k
Add the low resistance output circuit
Change spdif output port
Add the Audio DAC power to reference filtering
OPEN/1N4001 L2
V33
DV33
MD1
FB
CB2 CE2
+
OPEN/1N4001
0.1uF 100uF/10V
MD2
U1 V18
V18
3 2
IN OUT
CB8
0.1uF CB4 + CE4 CB5
AZ1117H-ADJ 0.1uF 100uF/10V 0.1uF
SOT223
R169
2.2k
1.USE
1117-1.8V,R169
OPEN ,R170 0,D1 D2
OPEN
R170 2.USE 1117-ADJ R169 2.4K
1k
,R170 1K,D1 D2 OPEN
3.USE D1 D2 ,U1 R169 R170
OPEN
Power ON alive source
U2
NC/1117-3V3
VCC
3 2
VI VO
1
GND
DV33
U12
8 1
VCC NC
SDA
R69 680 5 2
SDA NC
R68 680 SCL
6 3
SCL NC
4 7
GND WP
24C02
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11 - 4
History P#
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
4
5
5
DV33
VCC
+CE8
10uF/16V
R57
1K
R9
D4 10k
NC
V33
www.nostatatech.nl
Date
2003.6.15
2003.7.17
R59
10k
URST#
Q30
9014
CB1
0.1uF
URST#
URST# [ 2 ]
V18
V18 [ 2 ]
RFVCC
RFVCC [ 2 ]
LDO_AV33
LDO_AV33 [ 2 ]
DV33
DV33 [ 2,3,4,5 ]
VCC
VCC [ 2,3,4,5 ]
AVCC
AVCC [ 2 ]
VCC_AUDIO
VCC_AUDIO [ 5 ]
+12V
+12V [ 4,5 ]
-12V
-12V [ 4,5 ]
+12V1
+12V1 [ 5 ]
GND
GND [ 2,3,4,5 ]
POWER_STB
POWER_STB [ 2 ]
MIC2
MIC2 [ 5 ]
MIC_EN
MIC_EN [ 2,5 ]