Philips CDR785/00 Service Manual page 33

BLOCK DIAGRAM 3CDC MODULE
CD MECHANISM
VAM2202/01
DISC
6-2
TURNTABLE
MOTOR
FOCUS
MOTOR
RADIAL
MOTOR
SLEDGE
MOTOR
TURNTABLE
MOTOR
LASER &
MONITOR
DIODE
PHOTO
DIODES
D4
D1 D5
D2 D3
INNER SWITCH
SWITCH INFO
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
CD DRIVE UP/DOWN SWITCH
CAROUSEL
MOTOR
TRAY MOTOR
PHOTODIODE & HF AMPLIFIER - LOADER CONTROL BOARD
7806
TDA7073A
FOC +
55
FO
FOC -
RAD +
54
RA
RAD -
7807
TDA7073A
SLEDGE + SERVO - DECODER
56 CD10
SL
SLEDGE -
SAA7324 (SAA7325)
TTM -
59
MOT1
TTM +
60
MOT2
+5V +3,3V
7801
2 13
1
LD
7 64
LD ON
4
MON
11 61
V4
CD R/W
Laser Control
&
HF AMPLIFIER
5
D2-D4
TZA1024 (TZA1025)
10 2
HF IN
6,14
D1
D1-D5
D2
D3
D4
V1 KILL
R1,R2
63 34
7873
2
DATA
11
O7
3
SHR_CL
1
STB
12
O6
SHIFT
REGISTER
13
O5 16
HEF4094BT VDD
7871
TDA7073A 15
EN1
4
OO
V
5
O1
6
O2
7
O3
6-2
1805
18
+10V
20
+5V
7876
7877
DQSY 3
13
RCK EXCK
DQSY
SUB SBSO
SRDT 4
12
SBSY SCOR SRDT
SFSY WFCK µP_CLK 2
11
SCLK
CL11 MCK
CD Text
LC89170M
7810
16 LEFT 23
D/A
28 WCLK 1
WLCK
D/A
27 2
DATA
DATA
Converter
3
29 SCLK PCM1716
SLCK
RIGHT
13 21
D/A
7878
5 8,9,15
26
CL16
CL16 +10V
MC78L05ACP
10
38 PORE
PORE
SILD 12
42
SILD
14
SICL
40
SCL
7874
Level converter
DATA 13
39
SDA
7875
+3,3V
VCC +5V
5,17,21,52,57
DOBM
32 51
EBU OUT 7
KILL L 9
KILL R 5
SWITCH INFO 17
15
SHR_CL
SHR-STR 16
+10V
5V1
VDD (pin 16)
EN1 (pin 15)
t
Blockdiagram 3CDC99-DS 2000-03-20