Block Diagram; Photodiode & Hf Amplifier - Loader Control Pcb - Philips FW-D5/21 Service Manual

Blockdiagram
CD MECHANISM PHOTODIODE & HF AMPLIFIER - LOADER CONTROL PCB
DISC
TDA7073A
TURNTABLE FOCB+
MOTOR
FOCUS
MOTOR FOCB-
RADB+
RADIAL
MOTOR RADB-
TDA7073A
SLEDGEB+
SLEDGE
MOTOR SLEDGEB-
TTM-
TURNTABLE
MOTOR TTM+
LASER &
MONITOR
+5V
DIODE
2
1
LD
4
MON
Laser Control
PHOTO
DIODES &
HF AMPLIFIER
D4 D2-D4 5
TZA1024 (TZA1025)
D1 D5
D2 D3
INNER SWITCH
SWITCH INFO
1883
Open if carrousel is in a valid Play-Position.
1882
Closed if carrousel is in Position 1.
CD POS.1 SWITCH
1880
Closed if the tray is in one endposition.
Open during movement.
TRAY SWITCH
1881
Open if the drive is in one endposition.
Closed during movement.
CD DRIVE UP/DOWN SWITCH
7871
TDA7073A
CARROUSEL
MOTOR
TRAY MOTOR
10-5
7806
7877
55
FO
54
RA
7807
SERVO - DECODER
56 CD10
SL
SAA7324 (SAA7325)
PORE
59
MOT1
SILD
60
MOT2
SCL
+3,3V
13 7801
7 64
LD ON
SDA
11 61
V4
CD R/W
10 15
HF IN
VCC
6,14
D1
D1-D5
D2
D3
D4
V1
R1,R2
63
7873
14
2
O3 DATA
3
SHR_CL
7
O2
1
STB
4
O0
SHIFT
REGISTER
16
HEF4094BT VDD
5
O1
15
EN1
9
O7
V
11
O6
12
O5
13
O4
1805
18
+10V
20
+5V
+5,6V
8 7805
19 3
LP
+
23
6
18 2
CD LEFT
-
LN
Active low pass
Filter
TDA1308
23 5
RP
+
7 21
22 15
CD RIGHT
RN -
2
38
PORE
4
42
SILD
6
40
SICL
7874
5
39
DATA
7875
+3,3V
+5V
FLEX-FOIL
5,17,21,52,57
8001
17
SWITCH INFO
15
SHR_CL
16
STR-OUTP
+10V
5V1
9
OE_LATCH
VDD (pin 16)
EN1 (pin 15)
t
Blockdiagram 3CDC-LC 1999 09 21
10-5
CS 53 304