Tray Motor, Sensor & Optical Pickup Unit Circuit - Panasonic SA-PT750PL Service Manual

20.6. Tray Motor, Sensor & Optical Pickup Unit Circuit
1 2 3
SCHEMATIC DIAGRAM - 17
A
K
TRAY MOTOR CIRCUIT
TRAY MOTOR
M
TRAY MOTOR-
B
TRAY MOTOR+
PHOTO_DRV/A
Q9102
PULSE_SENSE
3
1
POSITION_SENSE
Q9102
2 4
C B3NAA0000102
PULSE SENSOR
Q9101 Q9101
B3NAA0000082
POSITION SENSOR
3
1
4
2
D
E
L
SENSOR CIRCUIT
F
FC9101
TRAY MOTOR-
1
TRAY MOTOR+
2
PHOTO_DRV/A
3
B3NAB0000027
DGND DISC SENSOR
4
PULSE_SENSE
5
2
G
POSITION_SENSE
6
3
H
1 2 3
4 5 6
FC9101
1
2
3
DGND
4
5
6
CN9102
1
TRAY MOTOR-
11
TRAY MOTOR+
10
Q9103
DGND
9
PHOTO_DRV/B
8
DGND
7
I
1
TO
DISC_SENSE
TRAY CIRCUIT
6
(CN7003)
DGND
IN SCHEMATIC
5
DIAGRAM - 15
PULSE_SENSE
4
DGND
4 3
POSITION_SENSE
2
DGND
1
11
4 5 6
7 8 9
OPTICAL PICKUP UNIT CIRCUIT
(FOR REFERENCE ONLY)
L4
GND
VCC
GND L3 C8
TO HFM
GND
OUT
GND
GND 1
TB 2
TA 3
TC 4
TD 5
FE1 6
FE2 7
1m 8
TO LDU RF 9
GND 10
VREF 11
12
VCC
SUB2 13
SUB1 14
SW 15
LD(CD) 16
LD(DVD) 17
LDGND 18
C5 C6
SA-PT750PL TRAY MOTOR/ SENSOR/ OPTICAL PICKUP UNIT CIRCUIT
7 8 9
111
10 11 12
26 T+
25 F+
TO ACT
24 F-
23 T-
22
HFM
21 TA
20 TB
19 TD
18 TC
FE2
17
16 FE1
15 GND(Im)
14
RF
13 VREF2(RF-)
12
PIN(DVD)
11 LD(CD)
10 LD GND
R2
9 LD(DVD)
8 GND(OEIC)
R4 7 VREF1
C2
6 VCC
5
SUB2
4 SUB1
PIN(CD)
C1 C3 3
2 SW
1 GND(Im)
R1
VR1
R3
R5
R6
R7
VR2
L2
C7
C4
L1
10 11 12
SA-PT750PL
13 14
A
B
A
TO
DVD MODULE (DV5)
CIRCUIT (FP8531)
IN SCHEMATIC
DIAGRAM- 4
C
D
E
F
G
H
13 14