Laser Power Control Related Signal - LG DP132 Service Manual

4. LASER POWER CONTROL RELATED SIGNAL

16
17
18
FIG 4-1 (NO DISC CONDITION)
16
17
18
FIG 4-2 (CD)
16
17
18
FIG 4-3 (DVD)
GND
XP5 XP5
24PIN/0.5mm 24PIN/0.5mm
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
GND
RF3.3V
16
C37 C37 CE13 CE13
0.1uF/25V/Y5V 0.1uF/25V/Y5V
47uF/16V 47uF/16V
GND
P+5V CDLDO
PNP_MMBT8550CLT1 PNP_MMBT8550CLT1
R27 R27
TP8 TP8
TP9 TP9
10K 10K
LDSW
TP5 TP5
TRAY-
P+5V
C23 C23 0.1uF/25V/Y5V 0.1uF/25V/Y5V
C25 C25 0.1uF/25V/Y5V 0.1uF/25V/Y5V
R36 R36 100 100 CDVR
R38 R38 100 100 DVDVR
D
DVDMDI
CDMDI
LD
3-21
TP64 TP64
TP59 TP59
TP58 TP58
TP55 TP55
TP56 TP56
TP63 TP63
TP57 TP57
TP65 TP65
TP66 TP66
TP62 TP62
TP67 TP67
FACT-
FACT+
TACT+
TACT- R R
C
D 1 1
PUHRF
A
B
F P
VREF1
E
CDVR#
DVDVR#
PUH_CDLD
DVDMDI
PUH_DVDLD
GND
18
TP20 TP20
TP44 TP44 C29 C29
TP43 TP43
TP42 TP42
TP61 TP61
RF3.3V
TP7 TP7
R47 R47 R48 R48
CE14 CE14
+ + + +
47uF/16V 47uF/16V
17
5.1 5.1 5.1 5.1
Q9 Q9 Q10 Q10 DVDLDO
PNP_MMBT8550CLT1 PNP_MMBT8550CLT1
TP6 TP6
GND