Philips MCD 708, Руководство по обслуживанию

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