55
11.6. Digital (Front End Section) Block Diagram
RFB
RFA
INA
INB
INC
IND
INE
INF
ING
INH
LASER
DETECTOR
LASER
DETECTOR
LASER
DETECTOR
BD
CD
DVD
FO/TR
ACTUATOR
SPINDLE
MOTOR
OPTICAL PICK-UP/TRAVERSE
P55006
BD/DVD
RF SIGNAL
DVD FOCUS AND TRACKING SIGNAL
BD FOCUS AND TRACKING SIGNAL
CD MAIN AND SUB SIGNAL
FOCUS/TRACKING ACTUATOR
STEPPING
MOTOR
SPINDLE MOTOR DRIVE
STEPPING MOTOR DRIVE
DIGITAL BLOCK
BACK END
SECTION
IC51001
(OPTICAL DISC CONTROLLER)
SODC
RF SIGNAL
MOTOR DRIVE SIGNAL
TRACKING ERROR SIGNAL
FOCUS ERROR SIGNAL
SERVO BLOCK DIAGRAM
Absolute/
PWM Control
Circuit
IC55004
(MOTOR/PWM/DRIVER)
VSLED1
VREF
VLOAD
VTRK
VFCS
VTLT
Pre-Driver
NF
NF
Power MOS FET
Absolute/
PWM Control
Circuit
BEMF detect
Comparator
Pre-Driver
Power MOS FET
Absolute/
PWM Control
Circuit
Pre-Driver
Power MOS FET
Absolute/
PWM Control
Circuit
Pre-Driver
Power MOS FET
Absolute/
PWM Control
Circuit
Pre-Driver
Power MOS FET
Absolute/
PWM Control
Circuit
Pre-Driver
Power MOS FET
IC55005
STP1 Control
Circuit
P30
PWM5A
PWM6A
P30
PWM5A
PWM6A
(MOTOR/PWM/DRIVER)
NF
A5V
AGND
NF
NF
NF
NF
Gain
Control
NF
Matrix
Circuit
Start-up
Circuit
SLED END
Detection
Pre-Driver
Current Linmit
TSD Circuit
Charge
Pump
Power MOS FET
12V
SLED1_P
SLED1_N
SLED2_P
SLED2_N
MCOM
16
VSLED2
VSPIN
XMUTE1
XMUTE2
XFG
GC
MONITOR
17
22
21
PWM2A
PWM0A
PWM1A
20
PWM7
VHALFIN
19
PWM3A
PWM3B
6
18
PWM4
13
PWM0B
PWM1B
14
11
FG
PWM2A
PWM0A
PWM1A
PWM7
VHALFIN
PWM3A
PWM3B
PWM4
PWM0B
PWM1B
FG
15
52
53
55
56
49
TRVA+
P55001
P55007
TRVA-
TRVB+
TRVB-
G_TR+
U
V
W
U
V
W
CP1
CP2
LOAD_P
LOAD_N
TRK_P
TRK_N
TLT_P
TLT_N
FCS_P
P5V_1
FCS_N
42
44
46
3
2
31
16
17
18
19
26
12V
P5V12L
5V
LDM-
LDM+
P55006
P55006
1
2
LDM-
LDM+
32
33
G_SB+
G_SB-
G_SA+
G_SA-
LOADING
MOTOR
29
G_TR-
30
G_FO2+
27
G_FO2-
28
G_FO1+
24
G_FO1-
25
Pre-Driver
Power MOS FET
STP1+
STP1-
STEP_ENA
STP1_IN
STP2_IN
CONLLIENDZ
STP2+
STP2-
Power MOS FET
Pre-Driver
STP2 Control
Circuit
Collimator END
Detectin
A5V
AGND
7
8
9
12
B22
PAD0
P10
D22
PAD1
F23
P11
L22
G26
G25
F25
E26
E25
D26
D25
C26
B26
C25
A20
D19
E19
P12
L23
P13
M23
P14
3.3V
E23
F19
C19
A19
A17
B17
C17
C18
D18
B20
BEAM EXPANDER
LASER DIODE
DRIVE(LDD)
LD CONTROL SIGNAL
K23
B19
DMP-
BDT220PU/PX
DMP-
BDT220GA/GC/GN/GW/GT
Summary of Contents for DMP-BDT220GA
Page 2: ...2 ...
Page 3: ...3 ...
Page 7: ...7 1 3 Caution for AC cord Only for BDT220GC ...
Page 9: ...9 2 2 Precaution of Laser Diode ...
Page 16: ...16 5 Location of Controls and Components ...
Page 17: ...17 ...
Page 39: ...39 9 2 5 Grease ...
Page 43: ...43 9 3 3 How to Clean the Lens of Optical Pick UP ...
Page 44: ...44 9 4 Adjustment of BD Drive 9 4 1 Repair Flowchart ...
Page 47: ...47 10 1 2 Checking and Repairing of BD Drive and Digital P C B ...
Page 85: ...85 ...
Page 99: ...99 16 Schematic Diagram for printing with A4 size ...