Philips ACT-300 Service Manual page 18

MAIN BOARD - CIRCUIT DIAGRAM
1830 C1 2802 B6 2830 C2 2836 E5 2840 E6 2844 D6
1840 F7 2803 C6 2831 E4 2837 E5 2841 E6 2845 D7
2800 B3 2804 C6 2832 E4 2838 E5 2842 E6 2846 B6
2801 B3 2805 C3 2835 E5 2839 E6 2843 D6 2847 B7
1 2
CD PART - C00
PSM - C31
A
3899 X
F848
+2.6V BC807-40
2.7V
7803
FROM
CONTROL
PART
+2.6V 3800
1R
S_MUTE
F850
B H
3897
7802
100K
BC847BW
H
F831
Focus+
C
F830
Track+
F833
Track-
H
F832
1830 Focus-
1 F837
2
F834
3
4
H
5
6
F836
7
D 8 F843
9
10 F838
11
12 F841
13
14 F840
15 H
16
F839
17
18 F842
20
SFV
H
F835
E
F
G
X ... component only provided (not in use)
H
1 2
4 - 2
2848 B7 2852 B11 2856 E13 2860 F9 2888 F9 3802 B3 3806 C5 3830 C2
2849 C7 2853 B12 2857 F7 2861 B9 2890 C5 3803 B6 3807 C6 3831 D3
2850 B11 2854 B12 2858 F8 2862 B11 3800 B3 3804 A6 3808 C4 3832 D3
2851 B11 2855 B12 2859 F9 2863 E7 3801 C3 3805 B5 3809 C4 3833 D3
3 4 5 6
TO DSP PART
VDD_PM
7800 TZA1024
1.8V 1 LD
+2.6V
V/I
F849
2 VCCL
2.7V
H
RGADJ 14
V/I
2801
3 CFIL VCC2 13
0.8V
2.5V
4n7 4 12
MON EQSEL
0.2V 0V
1x H
CDRW 11 0V
F851
5 DIN 4x RFEQO 10 1.3V
0.7V
3805
6 GND RFFB 9
0.8V
2x
10K
CMFB 8
2890
7 PWRON
H
2.5V 4p7
1.3V
3809 CD / RW - C60
0.2V
56K 3808
0V
7801
47K H
BC847BW 3847
+2.6V
H 33R
3841
3840
27K 10K
3842
3839
27K 10K
3838 3843
27K 10K
3844
3837
27K 10K
3836 3845
27K 10K
3835 3846
27K 10K
H H H H H H H H
DSP_CLK
3 4 5 6
3834 D3 3838 D4 3842 D5 3846 E5 3850 C7 3854 A11 3858 A12
3835 E4 3839 D4 3843 D5 3847 C6 3851 B7 3855 A11 3859 A12
3836 E4 3840 D5 3844 E5 3848 C7 3852 B9 3856 A11 3860 D13
3837 E4 3841 D5 3845 E5 3849 B7 3853 B10 3857 A12 3861 C6
7 8 9
CD_RW
2861
F852
1u
2847 64 63 62 61 60 59 58
7830
H
SAA7324
LDON
22n
2846 3849 2848 3851
1 HFREF
VERSATILE
1.3V
1K 1K
1n 27p
INTERFACE
1
MOTOR
2 HFIN
CONTROL
1.3V
3807 F844
3850
3 ISLICE
470R
1.3V
22K
DIG.
4 VSSA1 FRONT
PLL
END
0V
H
5 VDDA1
ADDR
EFM
2.7V
DEMOD SRAM
3848
6 IREF
1.2V
33K
2845
7 VRIN
VREF GEN.
1.3V
47n
H
8 D1
1.3V
9 D2
1.3V CONTROL AUDIO
FUNCTION PROCESSOR
10 D3
1.3V
ADC
11 D4 PRE-
1.3V PROCESSING
12
R1
1.3V
13 R2
1.3V
14 VSSA2
0V
2863
15
CROUT
1.3V BITSTREAM DAC
H H 47p
16 CRIN
VDDA2
1840
CSTCV 1.3V 17 18 19 20 21 22 23
16MHz
2858 2860
2888
3867 3868
+2.6V
+2.6V 1n5 1u0 1n5
22R 22R
2859
100u 4V
A
A
+2.6V
to AUDIO-PART
7 8 9
4 - 2
3867 F7 3890 F7 3895 A2 7800 A3 7830 B7 F833 C2 F837 C2 F841 D2
3868 F8 3891 F10 3896 B2 7801 C4 F830 C2 F834 D2 F838 D2 F842 E2
3869 G9 3892 F10 3897 B2 7802 B2 F831 C2 F835 E2 F839 E2 F843 D2
3874 C7 3893 F10 3899 A2 7803 A2 F832 C2 F836 D2 F840 D2 F844 C7
10 11 12
SERVO DRIVER - C40
15
3854 3857
2K2 2K2
13
3855 3858
2K2 2K2
14
3856 3859
2K2 2K2
+2.6V +2.6V
2862
+VR
F846 1u
57 56 55 54 53 52 51 50 49
CL11|4
SBSY 48
SBSY
0V
OUTPUT
SFSY 47
EBU
SFSY
STAGES
1.5V
INTERF.
SUB 46
SUB
ERROR PEAK
RCK 45
CORR. DET.
RCK
TEST3 44
STATUS 43
SILD 42
2.1V
RAB 41
0.3V
SCL 40
2.1V
SDA 39
1.9V
F854
RESETn 38
2.7V
37
SCLI
AUD_SCLK
1.6V
SER. DATA
SDI 36
LOOPBACK
AUD_SD
1.0V
INTERF.
WCLI 35
AUD_WCLK
1.6V
34
VERSAT. V2|V3 FROM / TO
SER. DATA KILL
INTERF. DSP PART
0V
INTERFACE
VSSD1 33
0V
KILL
24 25 26 27 28 29 30 31 32
C30
EF
SCLK
WCLK
DATA
10 11 12
F846 B10 F851 B6
F848 A2 F852 B8
F849 B3 F854 E11
F850 B3
13 14
Sledge
A
Focus TO SUPPLY PART
Radial
B
TO DSP PART
C
+3.3V
SILD
RAB
D
SCL
SDA
CD10_RESET
E
F
TO DSP PART
G
H
13 14