Yamaha Cdx9 Service Manual

CDX-497/CDX-397
11
CDX-497/CDX-397
Front Panel Assy
•Cable Connections
Mounting
Dismounting Top Cabinet [25]
→Remove 2 screws. [61] (2 on side)
→Remove 4 screws. [60]
(4 on rear side)
→Lift top cabinet from rear side to remove.
→Remove CN42, CN52 and CN71. →Unlock tray lid and close tray. →Open tray. (See 
HOW TO MANUALLY
EJECT THE TRAY)
→Remove 2 screws. [52]
(Front panel assy to side frame)
→Remove 4 screws. [51]
(Front panel assy to bottom frame)
→Remove front panel assy. →Unlock front panel assy from...

CDX-497/CDX-397
12
CDX-497/CDX-397
~


CDX-497/CDX-397
13
CDX-497/CDX-397

TEST MODE
•Starting Test Mode
a. Connect the power cable to the AC power outlet.
b. Press the “POWER” key while simultaneously pressing “
W WW W
W / 
D DD D
D” (PLAY/PAUSE) and “
A AA A
A” (STOP) keys of the main
unit.
c. When in the TEST mode, the “TEST MODE” is displayed for 2 seconds.
2. Function list of remote control keys.
•Canceling Test Mode
Press the “POWER” key of the main unit. F FF F
F
 (OPEN/CLOSE)
W WW W
W / D DD D
D (PLAY/PAUSE)
A AA A
A (STOP)
T TT T
T /...

CDX-497/CDX-397
14
CDX-497/CDX-397
~ 

CDX-497/CDX-397
15

IC DATAIC21: TC94A54 (MAIN P.C.B)
DSP
* No replacement part available.
I
3AI/F
–
O
3AI/F
O
3AI/F
O
3AI/F
O
3AI/F
I
3AI/F
–
O
3AI/F
O
3AI/F
O
3AI/F
O
3AI/F
O
3AI/F
O
3I/F
O
3I/F
O
3I/F
O
3I/F
O
3I/F
I/O
3I/F
–
–
–
I
3AI/F
O
3AI/F
–
–
O
3AI/F
–
O
O
3AI/F
–
–
– I/O
To be connected to the RFRP via
0.033 uF.
–
–
Monitor pin for various signals.
To be connected to the TEI via
0.033 uF.
–
–
–
Connected to the VRO and
PVREF within the IC.
To be connected 0.1 uF.
PWM ternary output (AVDD3,...

CDX-497/CDX-397
16
–
–
To be fixed at “H” or “L” when com-
munication is not in progress, so
that the pin will not become HiZ.
To be fixed at “H” when communi-
cation is not in progress, so that
the pin will not become HiZ.
To be connected to 0.1 uF.
–
–
–
Genelal-purpose I/O (input after a
reset).
The playback speed mode flag
output can be switched, using
command bits.
–
–
–
–
–
General-purpose I/O (input after a
reset).
As per CP-1201
–
Normal speed: 32fs = 1.4112 MHz
Normal speed: 44.1kHz
1-bit DAC...

CDX-497/CDX-397
17
CDX-497/CDX-397
IC22: TA2125 (MAIN P.C.B)
Motor driver
* No replacement part available.
36 35 34 33 32 31 30 29 28 FINRL4 RL3
RL2 RL5RL1 27 26 25 24 23 22 21 20 19
123456789 FINTSD lref STBY STBY
10 11 12 13 14 15 16 17 18 V
RRIN FIN IN3 IN4REG
STB 4ch
Driver
STB
N.C. N.C. N.C.N.C. REG OUT V
CC
IN2 GND
IN1 VCIN+
++
N.C.x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3
Control
Logic
No. Symbol Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35...

CDX-497/CDX-397
18
CDX-497/CDX-397
IC71: CS4392 (MAIN P.C.B)
DAC
* No replacement part available.
1 20 AMUTECMCLK MODE SELECT
(CONTROL PORT)EXTERNAL
MUTE CONTROLREFERENCE
SERIAL
PORT
VOLUME
CONTROLVOLUME
CONTROL
INTERPOLATION
FILTER
INTERPOLATION
FILTER∆∑
DAC
∆∑
DACANALOG
FILTER
ANALOG
FILTER MIXERFILT+
AOUTA+
AOUTA-
AOUTB-
AOUTB- LRCKSCLK
S D ATACMOUT BMUTEC AMUTEC M3 M1
(SDA/CDIN)M2
(CL/CCLK)M0
(AD0/CS)
RST RST
AOUTA- VL
AOUTA+ S D ATA
VA SCLK
AGND LRCK
AOUTB+ MCLK
AOUTB- M3
BMUTEC (SCL/CCLK) M2
CMOUT...

CDX-497/CDX-397
19
1
2
3
4
5
6
11
12
20
13
14
15
18
19
16
17RST
VL
SDATA
SCLK
LRCK
MCLK
FILT+
CMOUT
AMUTEC
BMUTEC
AOUTB-
AOUTB+
AOUTA+
AOUTA
AGND
VA
IC71: CS4392 (MAIN P.C.B)
DACNo. Symbol Function
Reset (Input) - Powers down device and resets all intemal registers to their default settings.
Logic Power (Input) - Positive power for the digital input/output.
Serial Audio Data (Input) - Input for two’s complement serical audio data.
Serial Clock (input/output) - Serial clock for the serial audio...

2
ABCDE FGH I J
1
3
4
5
7CDX-497/CDX-397
6
20

BLOCK DIAGRAM
 POWER
ON/OFF AC IN
CDX-497 model
CD Mechanism
MAIN•See page 25 → 
SCHEMATIC DIAGRAM
FRONT
•See page 26 → 
SCHEMATIC DIAGRAM
DIGITAL OUT
COAXIAL
OPTICAL
JK75
JK52 IC75
IC73
IC74
IC72 IC71
JK73
LINE OUT
L
R
IC22
IC21X201 IC51X501
RS51
SW41Q401 IC45 IC43 IC44 IC42IC41
D401, 403
D402, 404
D405, 406 T401FL51