Table of Contents
Advertisement
5
1.4 POWER SUPPLY AND LOADING BLOCK
The VD (8.3 ± 0.5V), the VD2 (5.6 ± 0.5V) and the VDD (5.0 ± 0.25V), which are supplied from the mother PC board, are
used for the power supply. In this system, the following four power-supply signals are available: the VD (for the drive
system), the V3R3 obtained from the VD2 via the 3.3V regulator (for the control system: 3.3V), the VDD (for the micro-
computer: 5V), and the 3VDD obtained from the VDD via the 3.3V regulator (for the microcomputer: 3.3V).
In the WMA-supported mechanism CXK5661, the V2R5 obtained from the VD2 via the 2.5V regulator (for WMA
decoder: 2.5V) is also used.
The microcomputer can turn on/off the CD driver (except for the load and eject modes) and the 3.3V signal by control-
ling the "CONT" and "CD3VON" signals respectively. To turn on/off the loading drive, there is no control terminal in the
microcomputer, but the "LOEJ" input signal works as the control one. In the LCO output block, the "CLCONT" signal is
used to switch between the loading mode and carriage mode.
CN901
22
PGND
23
VD
3
4
VD2
2
VDOUT
16
+
20
21
VDCONT
19
VDD
5
Fig. 1.4.1 Power supply/loading block (*: CXK5661)
CLCLONT
Fig. 1.4.2 Loading/carriage mode shift
5
6
LCOP
18
20
LOADING
M
IC301
MOTOR
LCOM
17
BA5996FM
10
9
19
22
28
21
2
1
2
4
IC203
*IC502
BA033SFP
BA25
BCOWFP
3
GND
4
IC703
2
5
1
S-818AA
33AUC-BGN
Loading Mode
Carriage Mode
6
7
CLCONT
32
31
29
CD3VON
28
IC701
1
4
PE5352
3
24
93
75
5VDD
S902
S904
S905
3VDD
Loading Mode
CX-3057
7
8
S903
8
A
B
C
D
E
F
17
Advertisement
Table of Contents
