Philips MC-77/22 Service Manual page 47

BLOCK DIAGRAM 3DTC
CD MECHANISM MAINBOARD
VAM2201
DISC
7802
TDA7073A
TURNTABLE FOC +
MOTOR
FOCUS
MOTOR FOC -
RAD +
RADIAL
MOTOR RAD -
7803
TDA7073A
SLEDGE +
SLEDGE
MOTOR SLEDGE -
TTM -
TURNTABLE
MOTOR TTM +
LASER &
MONITOR
+5V +3,3V
DIODE
2 13
1
LD
4
MON
Laser Control
PHOTO
DIODES &
HF AMPLIFIER
5
D4 D2-D4
TZA1024 (TZA1025)
D1 D5
D2 D3
6,14
INNER SWITCH
Loader mechanic
SWITCH INFO
SW2
CARRIAGE EXTRA
SW3
CARRIAGE HOME
SW4
CARRIAGE NUMBER
SW5
CARRIAGE NUMBER
SW6
DRAWER OPEN/CLOSE
SW7
SLIDER FORWARD
SW8
SLIDER REVERSE
CARRIAGE
MOTOR
DRAWER
MOTOR
10-5
55
FO
54
RA
56
SL
59
MOT1
60
MOT2
7801
7 64
LD ON
11 61
V4
CD R/W
10 2
HF IN
D1
D1-D5
D2
D3
D4
R1,R2
Closed if carriage extra has been detected 12
Closed if carriage is in play position. 13
SW4 and SW5 define the used carriage
14
Closed if the drawer closed
Closed if slider moves forwards
Closed if slider moves backwards
7815
TDA7073A
10
7800
19
LP
SIGNAL PROCESSOR
18
LN
CD10
SAA7324 (SAA7325)
23
RP
22
RN
38
RESET
42
SILD
40
SICL
41
RAB
39
SDA
+3,3V
VCC
5,17,21,52,57
V1 KILL DOBM
63 34 32 51
KILL L
not connected
KILL R
7813
2
DATA
Q6
3
SHR_CL
Q5
7
Q4
SHIFT
Q3 REGISTER
6
HEF4094BT
Q2
5
Q1 16
VDD
+10V
4
Q0
5V1
7814
13
VDD
2
SHR_CL
D5
3
7
DATA
D3 SHIFT
REGISTER
M62320FP
6
D2
12
RESET
D7
4
D0
10-5
+5V
8 7816
1803
3
+
6 19
2
CD LEFT
-
Active low pass
18
Filter
TDA1308
5
+
7 17
15
CD RIGHT
-
8
6
10
9
3
EBU OUT EBU
4
13
SWITCH INFO
12
SHR-DATA
11
SHR_CL
7811
+5V
+3,3V
+4V
6801
16
+5V
14
+10V
Analog Audio
SILD
SICL
Communication
µP ↔ Signal Processor
RAB
DATA
Digital Audio
Changer
Control Logic
+5V
Supply
+10V
Blockdiagram 3DTC 2001-11-25 BASIC Version