Signal Processing Part - Philips AZ7261 Service Manual

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SIGNAL PROCESSING PART

A
Laser supply
B
+3.5
CDM12.3
BLC
DISC DRIVE
7901
Photodiode-array 3.5V
BC848
3905
D1 D2 2.8V
100
R1 R2
C
D3
2.1V
1800
FM-B
HF
Laser
1
Monitor
2
Vref
D 3830
3 +REF +1.2
100R
4
+Vreverse
HF HF
R2 5 R2
D1 D1
6
E
D2 7 D2
R1 8 R1
D3 D3
9
10
F
HF
G
This circuit diagram shows a summary of all
possible versions. For components used in
specific versions see table below.
H
Explanation of itemnumber extentions:
AZ7261,AZ7262,AZ7266,AZ7267,AZ7268 ..........A 2988
AZ7263 ....................................................... A+F+J
150p
AZ7264 ........................................................... A+D
2987
I
82p
A ................................................... recharge circuit
2986 3980
D ............................................ wired remote control
F ........................................................... IR - sensor 82p
J ................................................................Line out
Supply voltages
J
HF
+A....... Battery or ext. DC
+S....... Switched +A
+3.5.... Stabilized voltage of DC/DC converter
+1.2.... Reference-voltage (only if power on)
+5 ....... Ext. DC
K
Explanation of abbreviations:
X ....... Components only forseen (not in use)
% ....... Tolerance of resistor is only 1%
L
CD7 → DAC
eye-pattern signal
DC voltage measured in
> 800 mVpp
PLAY-mode, DBB=off.
Set supplied via mains adapter 1
M
V EVM
TB=0.5µs
1 2 3 4 5
4-3
6 7 8 9
8 5
2902
1u
1 4
TDA1308
2
0V
7800
2.8V 1
+3.5
3
0V
3150
TDA1308
4
3.5V 10k
3152
HF 7520
10k
BC858
3151 3.5V
10k
0V
3800
+3.5
1k
HF HF
3809
D1
82k
3810
D2
82k
3811
D3
39k
DA DA
R1
R2
DA
3983 3973
10k 10k
7880 7880
74HCU04 1V 1V 74HCU04 1V
3982
2979 2982 2983
3 4 5 6
47k B C
150p 47p 1V 47p
3981 3985 3989
470k 22k 22k
7880 7880 7880
1V 1V 1V 1V
74HCU04 74HCU04 74HCU04
3984 3987
1 2 13 12 11 10
2k2 6k8 3k3
A F E
1V 1V
1
3974
2V
+3.5
470
PC74HCU04N
14 8
F E D
A B C
HF
1 7
TRANSFER OF AUDIO SAMPLES VIA SERIAL INTERFACE OF CD7
10
2 SCLK
11
3
WCLK left channel right channel
12
4
DATA
13
6 7 8 9
10 11 12 13 14
INNERSW
3833
+3.5
7830
22R
SAA7376 64 63 62 61
1
VSSA1
HF
2
3.5V
DA HF
VDDA1
3803
3
10k
D1
3804
4
10k
D2
CONTROL PART
3805
5
10k
D3
6
VRL
PRE-
DA DA DA DA DA
3806
7
PROC.
10k
D4
3807
8
10k
R1
3808
ERROR
9
10k
R2 CORRECTION
10
1.3V
IREFT
3847
390k 11 EFM
DA DA DA DA
Vref
VRH DEMOD.
12
HF VSSA2
HF-Preamplifier
3840
+3.5 13 DIGITAL
0R
3.5V SELPLL PLL
14
1.8V
ISLICE
15
3992
HFIN
3k3
1.8V
16 VSSA3
2984
HF HF
15p
7880
1V
74HCU04
17 18 19 20 21
1V
3990 3991 3832 2985 2835
9 8
1.8V
3k3 3k3 1k
D
SD
2n2 47p
HF
3841
+3.5
HF
CSTCS 8.46 MHz
22R
HF
servo out or disc motor cw
3V
not moving (f=530kHz)
servo in or disc motor ccw
0
10 11 12 13 14
4-3
15 16 17 18
+3.5
3825
4R7
60 59 58 57 56 55 54 53 52 51 50 49
SD
48
SCLK
MICROPROCESSOR
3826
VDD2P 47
INTERFACE
22R
3.5V
WCLK
46
DATA
45
VERSATILE
MISC
44
PINS
KILL
43
V1...VV5
FUNCTION
V3
42
CONTROL
KILL
V4
41
V5
EBU 40
FLAGS
INT.
PEAK
VSS2
39
DETECT
RAM SUB 38
SD
SRAM
ADDR.
RCK
37
MOTOR SFSY 36
CONTROL
SBSY
35
OUTPUT
MOTO2
TIMING 34
STAGES
13
MOTO1 33
22 23 24 25 26 27 28 29 30 31 32
16.9MHz
3812
SD SD SD
3827
1M +3.5
11.3MHz
22R
5800
12
SD
10
11
3813
2k2
3
1.7V 7820
1
1.7V
2
TDA1308
4
8
SD SD SD
1
15 16 17 18
19 20 21 22
1800 C 3
2800 D 5
2801 G10
2802 G10
2803 G11
2804 G11
2805 G12
A
2806 F11
2807 F11
2808 F12
2809 F10
2810 F10
2811 F 9
2813 L18
2814 L19
2815 K19
2817 J19
2818 J20
2819 I19
2820 I20
B
2821 L16
STATUS 2824 C15
2825 C18
PORES 2826 D18
2827 I18
SILD 2831 D 4
2833 K7
2834 H12
RA
2835 I12
2836 J13
SCL
2837 D12
C
2838 D12
SDA
2845 J13
+3.5
2902 B 6
2979 H 6
2980 J10
2981 C 5
2982 H 7
2983 H 8
2984 I11
HF DD
2985 I12
D 2986 I 5
2
2987 I 5
2988 I 5
2989 J 5
3150 C 8
+3.5
3151 D 7
SCLK
3152 C 8
3 3800 D 6
3803 E11
WCLK
3804 E11
3805 E11
E
3806 F11
DATA
3807 F11
3808 G11
4
3809 E 9
3810 E 9
3811 E 9
3812 I14
3813 K18
3814 K19
3815 J19
3816 J19
F
3817 J19
3818 J19
3819 I19
3820 I19
3821 L17
3825 C18
3826 D18
3827 I18
3830 D 4
3831 H12
G 3832 I12
3833 D12
3840 H12
3841 J13
3847 G12
3860 B15
3861 B16
3862 B16
3863 B17
3864 B16
3865 B15
H
3882 L17
3903 D 6
3904 D 7
3905 C 5
3973 H 8
3974 K7
3819 3820 3975 C 4
1k 3k3 3980 I 5
3981 I 6
3982 H 6
3983 H 7
I
3984 I 7
3985 I 8
3987 I 8
3988 I 9
SD SD
3989 I 9
3818 3817 to 7830 pin62
3990 I10
2k2 2k2 INNERSW
3991 I10
3992 H11
DM_IN
5800 J14
7520 C 8
7800 C 6
SLIDE_IN J
7820 L17
7820 K20
FOCUS_IN
SD SD
7830 D12
3815 3816 7880 I 6
TRACK_IN
7880 H 7
220 330
7880 H 8
DR_REF
7880 I11
7880 I 9
+3.5
7880 I 7
7901 C 5
K
+3.5 +1.2
3.5V
SD
8
3814
5
1.7V 7820
2k2
7
6
1.7V
TDA1308
L
SD SD
TDA1308
5
M
4
19 20 21 22
CS 46 176