Signal Processing Part - Philips AZ7381 Service Manual

1800 H 1 2808 L 4 2811 L 4 2814 H 7 2817 F 8 2820 G 8
2806 K 5 2809 L 5 2812 C 7 2815X J 7 2818 F 9 2821 G 9
2807 K 5 2810 L 5 2813 H 7 2816 F 8 2819 G 8 2822 I 8
1 2 3 4 5

SIGNAL PROCESSING PART

A
ITEMNUMBER EXTENSIONS
C,G,H,J,K = DRAM size selection
L = SM5902 version of NPC
M = SM5859 version of NPC
X = component only forseen (not in use)
% = tolerance of resistor is 1%
B
to/from CD-Drive
C
VAM2103
TRACK-
TRACK- 1
FOCUS+ FOCUS+
2
FOCUS- FOCUS-
3
D TRACK+
TRACK+
4
GND 5
M
LS 6
Hf
RFE 7
E
VDDL
8
LDON
9
D1 10
D2 11
F
D3 12
D5
13
D4
14
3859
+3
10R
VDD 15
G
LO 16
M
GND 17
M
LD
18
1800
H
I
J
3809
2k2
K
TRACK_IN
3811 3812
SD
FOCUS_IN 2k2 2k2
SLIDE_IN
INNERSW
3813
SD SD
2k2
L
SD
M
V
EVM
MABEL 3A/4A - PB2 Signal Processing Part 19980318
1 2 3 4 5
CS 46 527
4-2
2823 J 9 2826 D 8 2830 D14 2833 H17 2836 I20 2853L I21
2824 J 9 2827 D9 2831 D15 2834K B18 2837 C12 3809 K 5
2825 K10 2829 J 8 2832 J14 2835J E18 2843 G 2 3810 K 6
6 7 8 9
+3
3822 3834
+3 +3
10R 4R7
M
HF DA
H = Laser on
3,0V
1
1
HF
VSSA1
2
3,0V
VDDA1
3823
3
0V
10k
D1
3824
4
0V
10k
D2
3825
5
0V
10k
D3
3x
6
220p
VRL
DA DA DA DA
3826
7
0V
10k
D4
3827
8
0V
10k
R1
3828
0V 9
10k
R2
1.2V
3x
10
220p
3829
IREFT
270k
DA DA DA
11
VRH
DA DA 12
VSSA2
HF
13
3.0V
+3
SELPLL
1.6V 14
ISLICE
1.6V 15
HFIN
16 VSSA3
HF
HF
17
3830 2829
4k7 2823
2n2
2815X
47p
82p
HF
+3
3810
2k2
SD
3814
2k2
15 13 14
SD
DC Voltages measured in
PLAY-mode, ESA off
Set supplied via mains adapter
6 7 8 9
3811 K 4 3814 L 5 3819 A 8 3822 C 8 3825 F 8
3812 K 5 3817 A 8 3820 A 8 3823 E 8 3826 F 8
3813 L 5 3818 A 8 3821 A 9 3824 F 8 3827 G 8
10 11 12 13 14
from/to Control part
+3
NPC SEL
3870L
47k
L=5859
H=5902
SD
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50
MICROPROCESSOR
INTERFACE
7807
SAA7374GP
VERSATILE
CONTROL PART
PINS
V1...VV5
PRE- FUNCTION
PROC. CONTROL
KILL
ERROR EBU
FLAGS
CORRECTION INT.
PEAK
DETECT
EFM RAM
Vref SRAM
DEMOD. ADDR.
DIGITAL MOTOR
PLL CONTROL
OUTPUT
TIMING
STAGES
18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
SD SD SD
3832
CL4
4R7
PDM output
HF
eye-pattern signal
> 800 mVpp
1
10 11 12 13 14
4-2
3828 G 8 3831 I 8 3834 C 9 3838 E15 3842H F17 3845C F17
3829 G 9 3832 J10 3836 C14 3839 F15 3843G F17 3846 F17
3830 J 7 3833 J10 3837 A 9 3841 J14 3844K F17 3847 J19
15 16 17 18
3850K
+3
3,0V
4R7
D
3836
+3
4R7
uP
SD HF M
49
3851J
+3 3,0V
2
48 SCLK 4R7
1,5V
SCLK
DRAM
Stuff
3838 size
VDD2P 47 3.0V +3
22R 4M 3845C,3842H
8M 3844K,3843G
3 D
WCLK
46 1,5V WCLK
+3
7809
4
DATA
45 DATA SM5902
1,5V 44
MISC 3839
44 YFLAG
0V
22k
KILL
43 3,0V 1
VDD
0,2V
0V 2
SEL1 UC1
V3
42 0V
D D
SEL2 3,0V 3 UC2
V4
41
2,0V 0V 4 UC3
0V 5 UC4
V5
40
3,0V
0V 6 UC5
VSS2
39 0V 7 TEST1
3,0V 8 TEST2
SUB
38 SD
CLK
0V 9
RCK 37
10 VSS
0,1V
DATA
1,5V 11 YSRDATA
D
SFSY 36 PWM_IN
1,8V
SBSY
35 0V SBSY
MOTO2
34
1,0V 12
WCLK
MOTO1 33 SCLK
CL4
2,0V
SD
3841
+3
4R7
CD7 → NPC
NPC → DAC
2 5
servo out or disc motor cw
13
3V
not moving
14 3 6
servo in or disc motor ccw
15
4 7
0
TB=0.5µs
16
15 16 17 18
3848 J19 3851J E18 3857 B12 3870L C11 7809 E18
3849 J19 3853L I21 3858 J11 3871M D10 7810J D21
3850K B18 3856 D 9 3859 G 3 7807 E12 7811K B21
19 20 21 22
A
D
4M BIT (1M x 4) DRAM
B
C
D
4M BIT (1M x 4) DRAM
D
E
RAS
43 42 41 40 39 38 37 36 35 34
F
DRAM INTERFACE
WE 33 WE
D1 32 DD1
ENCODER DECODER DO DD0
31
DD3
D3 30
DD2
D2 29
G
INPUT
CAS 28
ATTENUATOR
BUFFER
A10 OE 27
INPUT
OUTPUT YMCLK 26
INTERFACE INTERFACE
YMDATA
25
YMLD
24
H
SHOCK YDEMUTE
23
CONTROL
D
13 14 15 16 17 18 19 20 21 22
I
3853L
+3
100R
D
consig
SD
D D
J
DBB/LEVEL
TREB
K
16.9 MHz
CL16
SRDA
CLK
LRCLK
L
6 5 7
TRANSFER OF AUDIO SAMPLES VIA SERIAL INTERFACE OF CD7 AND NPC
SCLK
M
WCLK left channel right channel
DATA
19 20 21 22