Philips FW-C870/19 Service Manual page 48

DIAGRAMA EM BLOCOS
CD MECHANISM PHOTODIODE & HF AMPLIFIER - LOADER CONTROL PCB
DISC
7806
TDA7073A
TURNTABLE FOCB+
MOTOR
FOCUS
MOTOR FOCB-
RADB+
RADIAL
MOTOR RADB-
7807
TDA7073A
SLEDGEB+
SLEDGE
MOTOR SLEDGEB-
TTM-
TURNTABLE
MOTOR TTM+
LASER &
MONITOR +5V +3,3V
DIODE
7801
2 13
1
LD
7
4
MON
11
CD R/W
Laser Control
PHOTO
DIODES &
HF AMPLIFIER
D4 D2-D4 5
TZA1024 (TZA1025)
10
D1 D5
D2 D3
6,14
D1-D5
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
7877
19 3
LP
55
FO
18 2
LN
Active low pass
54
RA
23 5
RP
22 15
RN
SERVO - DECODER
CD10
56
SL
SAA7324 (SAA7325)
38
PORE
59
MOT1
42
SILD
60
MOT2
40
SCL
64
LD ON
39
SDA
61
V4
15
HF IN +3,3V
VCC
5,17,21,52,57
D1
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
VDD (pin 16)
O6
EN1 (pin 15)
t
12
O5
13
O4
1805
18
+10V
20
+5V
+5,6V
8 7805
+
23
6
CD LEFT
-
Filter
TDA1308
+
7
21
CD RIGHT
-
2
PORE
4
SILD
6
SICL
7874
5
DATA
7875
+5V
FLEX-FOIL
8001
17
SWITCH INFO
15
SHR_CL
16
STR-OUTP
+10V
5V1
9
OE_LATCH
Blockdiagram 3CDC-LC 1999 09 21