Philips MC-77/22 Service Manual page 51

1802 B6 2819 B6 2842 B4 2850 A3
1803 F14 2820 B6 2845 A4 2853 B3
2817 C7 2831 G5 2847 B4 2854 B3
2818 C7 2833 G5 2849 A3 2858 D3
1 2
3DTC-mainboard VrefCD10
part 2
A
2850
EYE-PATTERN
HF
2n2
800mVpp
B
TB = 0.5µs/div
+3.3V
64
LDON
to part1 7801/pin7
63
Innersw
3.2V
from 1801
62
C
61
RW/DA
to part1 7801/pin11
60
M2
59
M1
58
3883
D
57
+3.3V
3.2V
10R
56
SL
55
FO
54
RA
53
E
52
+3servo
3.2V
DOBM 51
50
49
F
G
H
DOBM
I
. . . V DC voltages measured in
PLAY MODE
with following conditions:
V EVM
"+10V" = 10V
"+5V" = 5V
1 2
10-9
2866 C12 2885 C10 2889 C10 2893 B12
2867 C12 2886 B9 2890 D10 2894 C7
2868 D12 2887 C9 2891 B8 2895 D7
2869 D12 2888 D9 2892 D11 3702 C12
3 4 5
3863
470R
+3.3V
3875 2849
2n2
1K
PHOTO DIODES
22K
CD DRIVE on PART1
3874
2842
2847
47n
2853
4u7
47p
1.7V 1.7V 1.7V 3.2V 0.8V 1.6V 1.6V 1.6V 1.6V 1.6V 1.6V 1.6V
1 2 3 4 5 6 7 8 9 10 11 12 13
V1 ANALOG / DIGITAL
CONVERTER
FRONTEND
V5
Signal Processor
V4
SAA7324/SAA7325
PRE-
7800
MOTO2
PROCESSING
DIG.
MOTO1 PLL
CONTROL
FUNCTION
VSSD3
VDDD2C
AUDIO
PROCESSOR
SL
FO
RA
CFLG
PEAK
VDDD1P
DET.
DOEM
SUBCODE MICROCONTROLLER
SERIAL DATA
VSSD2 PROCESSOR
INTERFACE
LOOPBACK
INTERFACE
CL11|4
48 47 46 45 44 43 42 41 40 39 38 37 36
2833 2831
27p 1n
3854
10K
RESET
from shift register7814
on part 3
3 4 5
3703 C12 3735 F11 3756 C9 3760 B9
3719 D12 3743 I11 3757 C9
3761 B9
3720 D12 3754 G13 3758 D9 3762 B9
3733 F11 3755 B8 3759 D9 3763 B9
6 7 8
2819 2820
33p 33p
3755 3755
1802 +5V +5V
100R 100R
TF01
+3.3V
2891 2891
1.6V 1.6V 2,25V 2,25V
220u 220u
14 15 16
17
2817
3.2V
100n
TIMING
3757 3757
LN LN LN
18
22K 22K
LEFT LEFT
LP LP 3756 3756
LP
19
22K 22K
VNEG
20
VPOS
21
3V
3759 3759
RN RN RN
22
22K 22K RIGHT RIGHT
RP RP 3758 3758
RP
23
22K 22K
SELPLL
24
3V
TEST1
25
CL16
26
+3.3V
DATA
27
WCLK
28
SCLK
29
EF
30
TEST2 31
32
KILL
35 34 33
HF Detect
+3.3V
6 7 8
10-9
3764 C11 3841 I11 3853 A4 3860 G5
3765 D11 3844 F5 3854 G6 3863 A4
3814 B7 3845 F5 3857 G5 3865 G4
3816 D7 3849 G5 3858 G5 3866 B4
9 10 11
47n 47n
2893 2893
Active Low-Pass Filter Active Low-Pass Filter
4,5V 4,5V
7816-B 7816-B
8 8
6 6 TDA1308T TDA1308T
2V 2V
3702 3702
7 7
2,3V 2,3V
5 5
100R 100R
2V 2V
4 4
GNDA GNDA
7816-A 7816-A
2V 2V 2 2 TDA1308T TDA1308T
3719 3719
1 1 2,3V 2,3V
3 3 100R 100R
2V 2V
GNDA GNDA
voltage stab. 3733
+3.3V 33R
7811
3.3V
4.2V
BC847B
3735
4.1V
100R
PDZ-3.9B
+5V
+10V
3743
DOBM
470R
9 10 11
3867 A4 3883 D2 7816-A D11
3874 B3 6801 F10 7816-B C10
3875 A3 7800 C4
3881 B3 7811 F10
12 13 14
A
B
GNDA GNDA
2866 2866
10u 10u
C
GNDA GNDA
2868 2868
10u 10u
D
GNDA GNDA
E
F
1803
19
LEFT
18
GNDA
ANALOG AUDIO
17
RIGHT
16
+5V
15
GND
G
14
+A
13
SW_INFO SW_INFO
communication with
12
Shift Register SHR_DATA
SHR_DATA
on part 3
11
SHR_CL SHR_CL
RAB 10
RAB
SDA
9
DATA
SILD 8
SILD
H
7
GND
SICL
6
SICL
5
GND
4
Not Connected
EBU
3
EBU
2
EBU_GND
1
GND
I
FE-ST-VK-N
3DTC Mainboard Sheet2 2001-10-09 (Basic Version)
12 13 14