Schematic Diagram; Optical Pickup Unit Circuit - Panasonic SA-PM91DEE Service Manual

21 Schematic Diagram

21.1. Optical Pickup Unit Circuit

SCHEMATIC DIAGRAM - 1
OPTICAL PICKUP UNIT CIRCUIT
GND
1
VCC
2
TO
GND
3
HFM
GND
4
PCB
OUT
5
GND
6
GND
1
TB
2
TA
3
TC
4
TD
5
FE1
6
FE2
7
IM
8
TO
RF
9
LDU
GND
10
PCB
VREF
11
VCC
12
SUB2
13
SUB1
14
SW
15
LD (CD)
16
LD (DVD)
17
LDGND
18
L4
J0JBC0000105
L3
C8
J0JBC0000105
0.1
R2
0
C1 C3
0.1 0.1
C5 C6
22P 22P
L2
J0JCC0000307
L1
J0JBC0000105
: +B SIGNAL LINE : CD-DA SIGNAL LINE
TO ACT
R4
C2
0
0.1
R1
VR1
0
6.8K
R3
0
R5
0
R6
0
R7
6.8K
VR2
6.8K
C7
0.1
C4
0.1
89
SA-PM91DEE
T+
26
F+
25
F-
24
T-
23
HFM
22
TA
21
TB
20
TD
19
TC
18
FE2
17
FE1
16 TO
GND (IM)
15
DVD
RF
14
MODULE
VREF2(RF-)
13 CIRCUIT
PIN (DVD)
12 (FP8501) ON
LD (CD)
SCHEMATIC
11
LD GND
DIAGRAM-2
10
LD (DVD)
9
GND (OEIC)
8
VREF1
7
VCC
6
SUB2
5
SUB1
4
PIN(CD)
3
SUBSEL
2
GND (IM)
1