Philips FW-C870/19 Service Manual page 59

Diagrama em Blocos
CD MECHANISM PHOTODIODE & HF AMPLIFIER - LOADER CONTROL PCB
DISC
TURNTABLE
COMMON
MOTOR
TCA0372 7806
FOCUS
MOTOR
FOC -
55
TRACK -
54
RADIAL
MOTOR
Vref
TCA0372 7807
SLEDGE
MOTOR SLIDE -
56
TCA0372 7808
DISC -
59
TURNTABLE
MOTOR DISC+
60
LASER &
MONITOR
+5V +3,3V
DIODE
7801
2 13
1
LD
7 64
4
MON
11 61
CD R/W
Laser Control
PHOTO
DIODES &
HF AMPLIFIER
D4 D2-D4 5
TZA1024 (TZA1025) 10 15
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
7821
TCA0372
12
CARROUSEL
MOTOR
11
TCA0372
14
TRAY MOTOR
13
7822
7877
19 3
LP
18 2
LN
FO
Active low pass
RA
23 5
RP
22 15
RN
SERVO - DECODER
CD10
SAA7324 (SAA7325)
38
SL
PORE
MOT1
42
SILD
MOT2
40
SCL
LD ON 39
SDA
V4
+3,3V
HF IN
VCC
5,17,21,52,57
D1
D2
D3
D4
V1
R1,R2
63
7873
7
2
O3
DATA
3
SHR_CL
6
O2
1
STB
4
O0
SHIFT
REGISTER
16
HEF4094BT
VDD
5
O1
15
EN1
O6
V
VDD (pin 16)
O7
EN1 (pin 15)
t
O4
O5
1805
18
+10V
20
+5V
+5,6V
8 7805
+
6 23
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-MB 2000 04 27