Philips MCD120 Service Manual page 13

CIRCUIT DIAGRAM - DVD BOARD
PART 1
AVCC12
R123 R123
10K 10K
VREF3
BC50 BC50
EC26 EC26 R124 R124
10K 10K
100uF/16V 100uF/16V
0.1uF 0.1uF
AGND
DA_R R6 R6 180 180
AGND
DA_L R18 R18 180 180
AGND
7 - 1
AFR
AFR 1
AFL
AFL 1
DA_L
DA_L 2
DA_R
DA_R 2
R3 R3 27K 27K
C1 C1 82pF 82pF
R5 R5 NC/0 NC/0
EC2 EC2 R7 R7 AGND
R8 R8 1.2K 1.2K
2
1 EC3 EC3 10uF/16V 10uF/16V R9 R9
C2 C2 10uF/16V 10uF/16V 7.5K 7.5K C3 C3
3
U1A U1A
200pF 200pF 1200pF 1200pF NJM4558 NJM4558 R11 R11 R12 R12
10K 10K
AGND VREF3 AVCC12
AGND
R16 R16 27K 27K
C5 C5 82pF 82pF
EC4 EC4 R19 R19
AGND R17 R17 NC/0 NC/0
R20 R20 1.2K 1.2K
6
EC5 EC5 10uF/16V 10uF/16V R21 R21
7
C6 C6 10uF/16V 10uF/16V 7.5K 7.5K C7 C7 5
U1B U1B
200pF 200pF 1200pF 1200pF NJM4558 NJM4558 R24 R24
R23 R23
10K 10K
AGND VREF3 AVCC12
AGND
P+12V
P+5V
R126 R126
2.2K 2.2K
R125 R125 7.5K 7.5K
Q1 Q1
1 3
D13 D13
2N3906 2N3906
Zener/5V1 Zener/5V1
GND
R2 R2 10K 10K
Q2 Q2
EC1 EC1 220u/16V 220u/16V
1 3
AGND
2N3906 2N3906
R4 R4 10K 10K
P+5V
DVCC3 Q3 Q3
1 3
2N3906 2N3906
100 100 AFR BC35 BC35
R10 R10
C4 C4
2.2uF 2.2uF
3.3K 3.3K C201
470 470 Q4 Q4
2N3904 2N3904 47pF 47pF
R13 R13 10K 10K
2 AUDIO_MUTE
AGND R13 22K
POPO MUTE
AGND
100 100 AFL
AVCC12
C8 C8
470 470 Q5 Q5
2N3904 2N3904 47pF 47pF
BC1 BC1
0.1uF 0.1uF
AGND
AGND
AGND
VGND
EC27 EC27
47u 16V 47u 16V
V_COMP
VVCC3
R35 R35 75 75 CVB1
R39 R39 1k 1k V_FSADJ
VGND
V+5V
R25 R25
33 33
R14 R14
C18 C18 10pF 10pF
EC28 EC28
NC/2.4K NC/2.4K
Q21 Q21
CVB1 L1 L1 1uH 1uH
2N3904 2N3904
C21 C21 220uF/16V 220uF/16V R1 R1 NC NC
C20 C20
R15 R15
100pF 100pF
R22 R22 R26 R26
100pF 100pF
91 1% 91 1%
100 1%/0805 100 1%/0805
1.2K 1.2K
VGND
VGND
1 R15 R14 R22 R25 R26
2 R1
VGND
V+5V V+5V
R32 R32
75 75 D4 D4
C12 C12 NC NC BAV99 BAV99
G/Y Q6 Q6 L2 L2 0.22uH 0.22uH G/Y_O/SY
2
3906 3906
C13 C13 C14 C14
62pF 62pF 75pF 75pF
VGND
NC/0 NC/0 VGND
R28 R28
CVB1_O CVB1
CVB1_O 1
G/Y_O/SY G/Y
G/Y_O 1
B/U
R/V_O/SC R/V
R/V_O 1
B/U_O V_FSADJ
B/U_O 1
V_COMP
7 - 1
Power On Mute
Power Off Mute
V+5V
R50 R50 150 150 G/Y
R27 R27 150 150 B/U
R41 R41 150 150 R/V
R31 R31
75 75
C9 C9 NC NC
R/V Q11 Q11 L4 L4
2
3906 3906
VGND C11 C11
V+5V
62pF 62pF
VGND
D1 D1
NC/0 NC/0
R30 R30
BAV99 BAV99
CVBSOUT
Q6 , EC28 PCB
EC28 PCB
VGND
V+5V V+5V
R29 R29
75 75 D5 D5
C15 C15 NC NC BAV99 BAV99
B/U Q7 Q7 L3 L3 0.22uH 0.22uH B/U_O
2
3906 3906
C17 C17 C16 C16
62pF 62pF 75pF 75pF
VGND
NC/0 NC/0 VGND
R33 R33
TV_DAC0 2
TV_DAC1 2
TV_DAC2 2
TV_DAC3 2
V_FSADJ 2
V_COMP 2
V+5V VGND
D8 D8
BAV99 BAV99
0.22uH 0.22uH R/V_O/SC
C10 C10
75pF 75pF
VGND