43
4. Car Music Storage Unit
CD
OPTICAL
UNIT
DAX21EG
IC8
ATAPI
CD ROM
IC2003
CPU
INTERFACE
IC4001
DSP
MG
MEM
STICK
IC6
SLED
COIL
DRIVE
IC5
SPIN
DRIVE
IC1
RF AMP
LD CTL
FOCUS
/TRACK
AMP
HARD
DRIVE
(HDD)
IC4301
USB
INTERFACE
IC4002
EEPROM
FIGURE 4-8 - STORAGE DEVICES
4
10
3
ZCS3FX
INTRQ
ZCS1FX
XCS1
XCS0
INTR
MEM
STICK
SOCKET
XCS0
XCS1
INT
R
X1RQ1
DISPLAY ICS
ADDRESS
DATA BUS
INT1
ATAPI
DATA
BUS
4
5
9
P.S.
BOARD
IC501
77
120
81
MAIN_PON
IN
D 5V
PS4100
CN6
CN2003
CN3001 CN701
CN702 CN525
CS2,ACK,RST
FROM
IC1010 CPU
SUB BD.
+12V BATT.
ACC
CN7 CN2002
XIRQ
RF,TE, FE
LD
0.2mW
LASER POWER
IN
FROM CPU IC1010
CS5
D I/O
MAIN BD.
SERVO BD.
POWER
PWR
CLK
XCS4
SDO TO D/A IC371
4-4A125 11/13/02
Although most of the ICs that control CD operation are on the CD Servo board (see Figure 4-8), the CD cannot
begin without the main CPU nor output sound without the audio processing both on the main board. Table 4-8
lists the CD ICs and their functions.
It is interesting to note that if the CD assembly were unplugged (CN6 and CN7) so there is no communications
between CD IC8 and the main CPU IC1010 via IC2003, the MEX-1HD will take 51 seconds for the 9kHz / 10kHz
AM spacing to appear on the display when power is input. It normally takes 5 seconds for the AM spacing to
appear.
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