Sony CDX-CA680N Service Manual ▷ View online
9
CDX-CA680N
1-9. FLOATING BLOCK ASSY
Fig. 1
1
tension spring (RA3)
2
arm (roller T)
3
retaining ring (roller)
4
bearing (roller)
5
shaft roller assy
retaining ring (roller)
arm
arm
washer (RA)
washer (RA)
bearing (roller)
bearing (roller)
7
LOAD board
6
screw
(PTT 2x4)
1
tension spring (KF1)
2
tension spring (KR1)
8
compression spring (FL)
7
floating block assy
9
compression spring (FL)
5
Fit lever (D) in the
direction of the arrow.
3
damper (T)
4
damper (T)
6
Turn loading ring in the
direction of the arrow.
1-8. SHAFT ROLLER ASSY
• When installing, take note of the positions
arm (roller) and washers. (Fig. 1)
arm (roller) and washers. (Fig. 1)
10
CDX-CA680N
1-10. OPTICAL PICK-UP BLOCK
1
two screws
(P 2x3)
4
screw
(P 2x3)
5
leaf spring (feed)
6
shaft (feed) assy
2
sled motor assy
3
optical pick-up block
11
CDX-CA680N
SECTION 2
DIAGRAMS
2-1. IC PIN DESCRIPTION
• IC501 MN101C49KSE (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
VREF–
—
A/D converter power supply (–) pin
2
VSM
I
S-meter voltage detection input
3
QUALITY
I
Noise detection input
4, 5
KEYIN1, 0
I
Key input 1, 0
6
RCIN0
I
Rotary commander key input
7 to 9
NIL
I
Not used. (Fixed at L in this set)
10
VREF+
—
A/D converter power supply (+) pin (+5 V)
11
VDD
—
Power supply pin (+5 V)
12
OSCOUT
O
Main clock output (18.432 MHz)
13
OSCIN
I
Main clock input (18.432 MHz)
14
VSS
—
Ground
15
XIN
I
Sub clock input (32.768 kHz)
16
XOUT
O
Sub clock output (32.768 kHz)
17
MMOD
I
Not used. (Fixed at L in this set)
18
LCDSO
O
Serial data output for LCD driver IC.
19
LCDCE
O
Chip enable output for LCD driver IC.
20
LCDCKO
O
Serial clock output for LCD driver IC.
21
CD_TSO
O
Serial data output for CD servo IC.
22
CD_TSI
I
Serial data input from CD servo IC.
23
CD_TCKO
O
Serial clock output for CD servo IC.
24
SYSRST
O
System reset output
25
BUSON
O
BUS ON output
26
KEYACK
I
Key acknowledge detection input
27
DAVN
I
RDS data block synchronization detection input
28
BUIN
I
Backup power supply input
29
SIRCS
I
SIRCS input
30
TU_ATTIN
I
Tuner attenuator control input
31
CD_PACK
I
CD text pack synchronization signal input from CD servo IC.
32
NC (VCC)
—
Power supply pin (+5 V)
33
RESET
I
Microcomputer reset input
34
NOSE-SW
I
Front panel attachment detection input
35
BEEP
O
Beep output
36
NC
O
Not used. (Open)
37
TESTIN
I
Test mode detection input
38
ACCIN
I
Accessory power supply detection input
39
NC
O
Not used. (Open)
40
TELATT
I
Telephone attenuator detection input
41
NC (VCC)
I
Not used. (Fixed at H in this set)
42
UNISO
O
SONY-BUS data output
43
UNISI
I
SONY-BUS data input
44
UNICKO
O
SONY-BUS clock output
45
I2C_SIO
I/O
I
2
C BUS serial data input/output
46
NC
O
Not used. (Open)
47
I2C_CKO
O
I
2
C BUS serial clock output
48, 49
NC
O
Not used. (Open)
50
CD_SELFSW
I
CD mechanism deck Self switch detection input
51
TSTB
O
CD text parameter strobe output for CD servo IC.
52
RFOK
I
RFOK signal input from CD servo IC.
53
CD_RST
O
Reset signal output for CD servo IC.
54
A0
O
Command/parameter discrimination signal output for CD servo IC.
55
STB
O
Data strobe signal output for CD servo IC.
12
CDX-CA680N
Pin No.
Pin Name
I/O
Pin Description
56
X_EN
O
Not used. (Open)
57
LIMIT
I
CD mechanism deck Limit switch detection input
58
NCO
O
Not used. (Open)
59
D_SW
I
CD mechanism deck Down switch detection input
60
INSW
I
CD mechanism deck Disc in switch detection input
61
NC
O
Not used. (Open)
62
CD_LM_LO
O
CD mechanism deck loading motor control output (Loading direction)
63
CD_LM_EJ
O
CD mechanism deck loading motor control output (Eject direction)
64 to 66
NC
O
Not used. (Open)
67
ATT
O
System attenuator control output
68
DIAG
I
Mode input from power amp IC.
69
STB
O
Standby control output for power amp IC.
70
VOLATT
O
Electronic volume attenuator control output
71 to 74
NC
O
Not used. (Open)
75
DOOR-IND
O
Sub panel power supply control output
76 to 84
NC
O
Not used. (Open)
85
NS_MASK
O
Noise mask output
86
E2P_CKO
O
EEPROM serial clock output
87
E2P_SIO
I/O
EEPROM serial data input/output
88
TU-ATT
O
Tuner attenuator control output
89, 90
NC
O
Not used. (Open)
91
AD_ON
O
Key power supply control output
92, 93
NC
O
Not used. (Open)
94
PANEL_SW
I
Not used. (Fixed at L in this set)
95
DAVSS
—
D/A converter power supply (–) pin
96
COLSW
I
Key illumination 1 color/2 color select initial setting input (Fixed at L in this set)
97
FLASH_W
I
Flash microcomputer write detection input
98
RCIN1
I
Rotary commander SHIFT key input
99
NC
O
Not used. (Open)
100
DAVDD
—
D/A converter power supply (+) pin (+5 V)
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