Magnavox 19MDTR20 Service Manual page 28

DVD System Control/Servo Block Diagram
NOTE FOR WIRE CONNECTORS:
1. PREFIX SYMBOL "CN" MEANS CONNECTOR.
(CAN DISCONNECT AND RECONNECT.)
" " = SMD
2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER
HOLES OF THE PCB.
(WIRE IS SOLDERED DIRECTLY.)
PCM-SCLK
A-MUTE
TO DVD/ AUDIO
ADAC-MD
BLOCK
ADAC-MC
ADAC-ML
FS(+)
FS(-)
TO DIGITAL SIGNAL
TS(+)
PROCESS BLOCK
TS(-)
TRAY-OUT
TRAY-IN
SPINDLE
MOTOR
M
SP(+)
SP(-)
TRAY-OUT
SLED
TRAY-IN
MOTOR
GND
M
SL(-)
SL(+)
FG-IN
FG
SENSOR
FG CBA DRIVE CBA
1-5-15
BLOCK DIAGRAMS < DVD Section >
FOCUS SERVO SIGNAL
IC451
(CLOCK GENERATOR)
X451
7
MULTI X'TAL 36.864MHz
3 1/4
PLL OSC OSC
8
15 1/4 PLL2
10
14
IC301
(SERVO DRIVE)
+
FOCUS
15
+
-
ACTUATOR
-
16 DRIVE
+
TRACKING
14
+ -
ACTUATOR
-
DRIVE
13
SPINDLE
12
+
MOTOR
+
-
11 DRIVE
-
SLED
17
+
MOTOR
CN301
-
18 DRIVE
3
4
5
+3.3V
IC461
6
7
5 RESET
8
9
IC202
1
(OP AMP)
12 14
DVD MAIN CBA UNIT
TRACKING SERVO SIGNAL SLED SERVO SIGNAL
IC101
(MICRO CONTROLLER)
172 EXT CLOCK
92 CLK33M
170 BE CLOCK
17 FSEL
95 A-MUTE
51 ADAC-MD
50 ADAC-MC
96 ADAC-ML
27
26 152 FOCUS DRIVE
25
24
TRACKING
1 150
DRIVE
2
3
CS 54
SDATA 55
4 71 SPDL SCLK 53
5 DVD- REMOTE 61
6
23 70 SLD PWRCON 63
4 68 RESET
97 TRAY-OUT
60 TRAY-IN
66 FG-IN
SPINDLE SERVO SIGNAL
CN401
18 CS FROM/TO SERVO
/SYSTEM CONTROL
20 SDATA
BLOCK
21 SCLK
<TV/VCR SECTION>
22 DVD-REMOTE
CN2402
TO POWER
PWRCON
SUPPLY BLOCK
<TV/VCR SECTION>
1-5-16 TD857BLDS