Sony CDX-RA550 / CDX-RA650 Service Manual ▷ View online
37
CDX-RA550/RA650
Pin No.
Pin Name
I/O
Pin Description
64
CDON
O
Servo power supply control signal output H: power on
65
XUART
I
Sony-Bus/MC-Bus change signal input H: Sony-Bus, L: MC-Bus
66
ZMUTE
O
Zero detection mute signal output
67
MECON CHK
I
MECON rising detection signal input
68
CDON CHK
I
CDON rising detection signal input
69 to 74
NC
—
Not used. (Open)
75
RSTX
I
System reset signal input
76
NC
—
Not used. (Open)
77
X1A
—
Sub-clock connect pin Not used in this set. (Open)
78
X0A
—
Sub-clock connect pin Not used in this set. (Connect to Vss.)
79
VSS
—
Ground pin
80
X0
I
Main-clock connect pin (12 MHz)
81
X1
O
Main-clock connect pin (12 MHz)
82
VCC
—
Power supply pin (+3.3 V)
83
XWD
I
Not used in this set. (Open)
84
XINIT3
I
Not used in this set. (Open)
85
NC
—
Not used. (Open)
86
XSJIG
I
Not used in this set. (Open)
87 to 89
XINIT0 to 2
I
Not used in this set. (Open)
90 to 96
NC
—
Not used. (Open)
97
XDES
I
Mode select pin
98
XLINE
I
Not used in this set. (Open)
99, 100
NC
—
Not used. (Open)
38
CDX-RA550/RA650
IC501 MB90488BPF-G-161E1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No.
Pin Name
I/O
Pin Description
1
AREASEL2
I
Destination setting pin
2
AREASEL1
I
Destination setting pin
3
AREASEL0
I
Destination setting pin
4
NCO
O
Not used. (Open)
5
BEEP
O
Beep signal output
6
NCO
O
Not used. (Open)
7
NOSESW
I
Front panel open/close detect signal input
8
DIAG
I
Power AMP status signal input
9
VOL ATT
O
Electronic volume attenuate control signal output
10
FSW IN
I
DC-DC converter oscillator frequency count signal input
11
VSS
—
Ground pin
12
TUATT
O
Tuner mute control signal output
13
NS MASK
O
Noise mask signal output (RA550 only)
14
ILLUMI SEL1
I
Illumination voltage setting signal input 1
15
ILLUMI SEL2
I
Illumination voltage setting signal input 2
16
NCO
O
Not used. (Open)
17
AUXIN
O
AUX IN select signal output L: AUX, H: BUS IN
18
FSW OUT
O
DC-DC converter oscillator frequency count signal output
19
FL ON
O
FL power on/off control signal output
20 to 22
NCO
O
Not used. (Open)
23
VCC5
—
Power supply pin (+3.3 V)
24
EEP SIO
I/O
EEPROM bus serial data input/output
25
EEP CKO
O
EEPROM bus serial clock output
26
AMP STB
O
Power AMP standby signal output
27
FLS CE
O
FL tube chip enable signal output
28
FLS SO
O
FL tube serial data signal output
29
FLS SCK
O
FL tube serial clock signal output
30
RDS ON
O
RDS ON signal output
31
NCO
O
Not used. (Open)
32
NCO
O
Not used. (Open)
33
I2C CKO
O
I2C bus serial clock signal output
34
I2C SIO
I/O
I2C bus serial data signal input/output
35
DAVDD
—
A/D converter power supply pin (+3.3 V)
36
AVRH
—
A/D converter external reference power supply pin (+3.3 V)
37
DAVSS
—
Ground pin
38
QUALITY
I
Noise detect signal input
39
VSM
I
S-meter voltage detect signal input
40
KEY IN1
I
Key signal input 1
41
KEY IN0
I
Key signal input 0
42
VSS
—
Ground pin
43
RC IN0
I
Rotary commander key signal input
44
SA CLK
O
Spectrum analyzer clock signal output
45
SA IN
I
Spectrum analyzer signal input
46 to 48
NCO
O
Not used. (open)
49
MD0
I
Operation mode setting pin (Connect to VDD.)
50
MD1
I
Operation mode setting pin (Connect to VDD.)
51
MD2
I
Operation mode setting pin (Connect to VSS.)
39
CDX-RA550/RA650
Pin No.
Pin Name
I/O
Pin Description
52
KEYACK
I
Key acknowledgment detect signal input
53
TUATTIN
I
Tuner mute zero cross detect signal input
54
BUIN
I
Back-up power supply detect signal input
55
NCO
O
Not used. (Open)
56
DAVN
I
RDS data block synchronized detect signal input
57
NCO
O
Not used. (Open)
58
UNISI
I
SONY bus data signal input
59
UNISO
O
SONY bus data signal output
60
UNI SCK
O
SONY bus clock signal output
61
DIM SEL1
I
FL tube luminance setting signal input
62
DIM SEL2
I
FL tube luminance setting signal input
63
NCO
O
Not used. (Open)
64
SIRCS
I
Remote control signal input
65
NCO
O
Not used. (Open)
66
FL RST
O
FL driver reset signal output
67
NCO
O
Not used. (Open)
68
FLASH W
I
Memory mode select signal input
69
NCO
O
Not used. (Open)
70
SYNCHRO SW
I
Synchro CD door open/close detect signal input
L: CD door close, H: CD door open
71
RCIN1
I
Rotary commander shift key signal input
72
ACCIN
I
Accessory power supply detect signal input
73
TESTIN
I
Test mode detect signal input
74
TEL ATT
I
Telephone attenuate detect signal input
75
ILLIN
I
Auto dimmer illumination detect signal input H: Ill off
76
XKEYON
O
A/D converter power supply control signal output
77
RESET
I
CPU reset signal input
78
OPEN REQ
I
Mechanism open request signal input
79
XIN
I
Sub-clock input (32.768 kHz)
80
XOUT
O
Sub-clock output (32.768 kHz)
81
VSS1
—
Ground pin
82
OSC OUT
O
Main-clock output (3.68 MHz)
83
OSC IN
I
Main-clock input (3.68 MHz)
84
VCC3
—
Power supply pin (+3.3 V)
85
DEMO SEL
I
DEMO select signal input
86
ATT
O
Audio mute control signal output
87
BUSON
O
Bus on signal output
88
SYSRST
O
System reset signal output
89
EJECT OK SW
O
Eject OK signal output
90
NCO
O
Not used. (Open)
91
CDON
I
CD mechanism power control request signal input
92
CDMON
I
CD mechanism deck power control request signal input
93
Z-MUTE
I
CD zero cross mute detect signal input
94, 95
NCO
O
Not used. (Open)
96
DDON
O
DC-DC converter IC control signal output
97
MON
O
Motor driver IC control signal output
98
MOTOR+
O
Motor control signal output (+)
99
MOTOR–
O
Motor control signal output (–)
100
MSW
I
Drive block detect switch active signal input
L: drive block detect switch on H: drive block detect switch off
40
CDX-RA550/RA650
SECTION 4
EXPLODED VIEWS
Ref. No.
Part No.
Description
Remark
4-1. MAIN SECTION
Ref. No.
Part No.
Description
Remark
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
• Accessories are given in the last of this
parts list.
R
R
1
X-2102-615-1 PANEL (LOW) ASSY, SUB
2
2-583-939-01 SCREW (+B 2X4)
3
X-2055-203-2 LOCK ASSY (S)
4
2-672-356-01 RING (ROLLER), STOPPER
5
2-638-871-01 GEAR (A)
6
2-638-873-01 GEAR (CAM)
7
2-638-868-01 LEVER (U)
8
2-638-875-01 SPRING (LEVER), TENSION COIL
9
2-638-869-01 LEVER (D)
10
X-2067-705-1 CHASSIS ASSY
11
2-638-872-01 GEAR (B)
12
2-638-870-01 WHEEL, WORM
13
3-246-006-31 COVER
14
2-348-996-01 SCREW (+PTT 2.6X6), GROUND POINT
15
A-1153-746-A MAIN BOARD, COMPLETE (RA550)
15
A-1153-799-A MAIN BOARD, COMPLETE (RA650)
16
2-345-298-01 PLATE (TU), GROUND
17
1-776-207-72 CORD (WITH CONNECTOR) (POWER) (RA650)
17
1-776-527-71 CORD (WITH CONNECTOR) (ISO) (POWER)
(RA550)
F901
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
M904
X-2067-993-1 MOTOR ASSY (OPEN/CLOSE)
TU1
A-3220-961-B TUNER UNIT (TUX-032)
#1
7-685-792-09 SCREW +PTT 2.6X6 (S)
#2
7-685-790-01 SCREW +PTT 2.6X4 (S)
#3
7-685-793-09 SCREW +PTT 2.6X8 (S)
#4
7-627-553-17 PRECISION SCREW +P 2X2 TYPE 3
#5
7-624-104-04 STOP RING 2.0, TYPE -E
#6
7-624-102-04 STOP RING 1.5, TYPE -E
F901
not supplied
not supplied
TU1
not supplied
#1
#1
#4
#5
#6
#1
#1
#2
#3
#1
MG-611WA-186//C
M904
A
A
B
B
C
C
1
2
3
4
4
4
4
13
14
17
15
16
5
6
7
9
8
10
11
12
Click on the first or last page to see other CDX-RA550 / CDX-RA650 service manuals if exist.