Blockdiagram - Philips FW-C220 Service Information

Blockdiagram

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
2 13
1
LD
4
MON
CD R/W
Laser Control
PHOTO
DIODES
&
HF AMPLIFIER
5
D4 D2-D4
TZA1024 (TZA1025)
D1 D5
D2 D3
6,14
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
7877
LP
55
FO
LN
54
RA
RP
RN
SERVO - DECODER
56 CD10
SL
SAA7324 (SAA7325)
PORE
59
MOT1
SILD
60
MOT2
SCL
7801
7 64
LD ON
SDA
11 61
V4
10 15
HF IN
VCC
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
t
12
O5
13
O4
1805
18
+10V
20
+5V
+5,6V
8 7805
19 3
+
6 23
18 2
CD LEFT
-
Active low pass
Filter
TDA1308
23 5
+
7 21
22 15
CD RIGHT
-
38 2
PORE
42 4
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)
Blockdiagram 3CDC-LC 1999 09 21
10-5