Sony WX-C770 Service Manual ▷ View online
– 38 –
Pin No.
Pin Name
I/O
Pin Description
54
SYS-RST
O
System reset control output
55
BUS-ON
O
BUS ON control output (for SONY BUS)
56, 57
RE1, 0
I
Rotary encoder input
58
AD-ON
O
Power control output for A/D conversion.
59
RAMBU
I
RAM reset detection input
60
RESET
–
Reset input
61
SIRCS
I
Remote commander input
62
BU-IN
I
Backup power detection input
63
NIL
I
Not used. (Connect to GND.)
64
ACC-IN
I
Accessory power detection input
65
DIMMER
I
DIMMER control input
66
TEL-MUTE
I
External mute detection input
67
KEY-ACK
I
Key input acknowledge
68
VDD
–
Microcomputer power supply
69
X2
–
Main oscillator output (5 MHz)
70
X1
–
Main oscillator input (5 MHz)
71
IC
–
Not used. (Connect to GND.)
72
XT2
–
Sub oscillator output (32 kHz)
73
XT1
–
Sub oscillator input (32 kHz)
74
AVDD
–
Power supply for A/D conversion.
75
AVREF
–
Reference voltage power supply for A/D conversion.
76 – 78
KEY-IN0 – 2
I
Key input
79
RC-IN0
I
Rotary commander input
80
DSTSEL
I
Destination initial setting (A/D conversion input)
– 39 –
– 40 –
• IC801 µPD78058GC-936-3B9 (CD/DISPLAY CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
LEDLCK
O
LED driver control output
2
LEDCKO
O
LED driver control output
3
LEDSO
O
LED driver control output
4
AVSS
–
GND for A/D conversion.
5, 6
FL-CE0, 1
O
Chip select output for display driver.
7
AVREF1
–
Reference voltage power supply for D/A conversion.
8
FL-RST
O
Display driver reset output
9
FL-SO
O
Serial data output for display driver.
10
FL-CKO
O
Serial clock output for display driver.
11
SRDT
I
Sub code decoder serial data input
12
NCO
O
Not used.
13
SCLK
O
Sub code decoder serial clock output
14
FL-BLK
O
Blank control output for display driver.
15
NIL
I
Not used. (Connect to GND.)
16
UNISI
I
Serial data input (for SONY BUS)
17
UNISO
O
Serial data output (for SONY BUS)
18
UNICKI
I
Serial clock input (for SONY BUS)
19
LINKOFF
O
Link off output
20
ILLON
O
Illumination power control output
21
CDMON
O
CD mechanism power control output
22
CD-ON
O
CD power control output
23
SP-SEL
O
Spectrum analyzer IC control output
24
SP-C
O
Spectrum analyzer IC band select output
25
SP-B
O
Spectrum analyzer IC band select output
26
SP-A
O
Spectrum analyzer IC band select output
27
CDMUT
O
CD mute control output
28
EMPH-O
O
Emphasis control output
29
CD-RST
O
CD signal process IC reset output
30
XMODE
O
Sub code decoder mode control output
31, 32
NIL
I
Not used. (Connect to GND.)
33
VSS
–
Microcomputer GND
34
TBTGSEL
I
CD traverse/tracking gain automatic adjustment select input
35 – 39
NIL
I
Not used. (Connect to GND.)
40
GFS
I
GFS signal detection input
41
SQ-SI
I
SUB Q data input
42
SQ-CKO
O
SUB Q clock output
43
NIL
I
Not used. (Connect to GND.)
44
CD-SO
O
CD signal process serial data output
45
CD-LAT
O
CD signal process latch output
46
CD-CKO
O
CD signal process serial clock output
47
PH2
I
8 cm/12 cm disc detection input
48
F-OK
I
Focus signal detection input
49
LD-ON
O
Laser ON/OFF control output
50
D-SW
I
DOWN switch detection input
51
PH1
I
Disc insert detection input
52
L-SW
I
Sled limit switch detection input
53
LM-LOD
O
Loading motor control output (Loading direction)
54
LM-EJ
O
Loading motor control output (Eject direction)
55
PH3
I
Disc detection sensor input
56
CTL1
O
Driver IC control output 1
57
NCO
O
Not used.
58
EESIO
I/O
CD eject key input/output
Pin No.
Pin Name
I/O
Pin Description
59
EECKO
O
EEPROM serial clock output
60
RESET
–
Reset input
61
SCOR
I
SCOR signal detection input
62
CNIN
I
Track jump number count input
63
SELF-SW
I
Disc self store detection input
64
SENS
I
SENS signal detection input
65
DQSY
I
Sub code decoder block sync input
66
BUIN
I
Backup power detection input
67
BUSON
I
BUS ON control input
68
VDD
–
Microcomputer power supply
69
X2
–
Main oscillator output (5 MHz)
70
X1
–
Main oscillator input (5 MHz)
71
IC
–
Not used. (Connect to GND.)
72
XT2
–
Not used.
73
XT1
–
Not used. (Connect to GND.)
74
AVDD
–
Power supply for A/D conversion.
75
AVREF
–
Reference voltage power supply for A/D conversion.
76
NIL
I
Not used. (Connect to GND.)
77
SP-IN
I
Spectrum analyzer input
78
TSTIN0
I
Load/Eject inhibit setting input
79
NCO
O
Not used.
80
LEDOE
O
LED driver control output
– 41 –
– 42 –
WX-C770
6-2. BLOCK DIAGRAM — CD SECTION —
(Page 45)
14 RF
59 CLKO
57 XLTO
56 DATO
56 DATO
21
PCMD
20
LRCK
22
BCK
34
XTAI
50 XRST
DIGITAL SIGNAL PROCESSOR
IC1
DIGITAL FILTER, D/A CONVERTER
IC401
55 CNIN
54 SEIN
54 SEIN
1
FOK
3
MDP
46
47
SQSO
44
EXCK
GFS
41
SCOR
49
SQCK
51
SENS
52
DATA
53
XLAT
CLOK
5
OPTICAL PICK-UP
KSS-520A
SERVO 5V
PD
LD
RV1
FOCUS BIAS
RV4
FOCUS GAIN
LD DRIVE
Q1,2
35 PD1
36 PD2
39 E
38 F
38 F
31
RFO
19
CLK
20
XLT
21
DATA
RF AMP, SERVO CONTROL
IC2
37 FE BIAS
1
FEO
2
FEI
16
SLO
22
XRST
23
C. OUT
24
SENS
25
FOK
6
FEO
13
TAO
34 PD
33 LD
TRACKING
FOCUS
M902
(SLED)
M901
(SPINDLE)
M903
(LOADING)
16 CH2+
15 CH2–
18 CH1+
17 CH1–
19
CH1 IN
22
CH2 IN
24
CH3 IN
2
CH4 IN
FOCUS/TRACKING COIL
DRIVE, MOTOR DRIVE
IC3
13 CH3+
14 CH3–
12 CH4+
11 COM
6
FWD
7
REW
4
CTL1
5
CTL2
10 CH5+
04
M
M
M
I - V
AMP
X401
16.9344MHz
DATA
4
LRCK
6
BCK
CLKO
5
MCK
12
L OUT
9
R OUT
19
6
XMODE
1
EXCK
4
WFCK
2
3
3
SBSO
SCOR
13
DQSY
11
SCLK
12
SRDT
15
RSTB
17
EMPH
18
MUTE
CD
1
XTI
54
49
20
53
XTO
LD ON
LM LOD
LMEJ
LMEJ
5V(IC401)
BU5V
48
62
FOK
29 CD RST
56
C.OUT
CTL1
R-CH
41 SQ SI
42 SQ CKO
64 SENS
44 SO
44 SO
SW3
(LIMIT)
28 EMPH0
27 CD MUT
30 XMODE
13 SCLK
13 SCLK
11 SRDT
CD/DISPLAY
CONTROL
IC801(1/2)
CD SUB CODE CONTROL
IC803
65 DQSY
40
61
61
63
GFS
SCOR
SELFSW
51 PH1
50 D-SW
52
LSW
22
CDON
21
CMDON
PH2
55
PH3
SELECT
SWITCH
Q3-6
DISC IN
DET
Q11,D12
POWER
CONTROL
Q404,405
POWER
CONTROL
Q803
DISC SIZE
DET
Q12,D11
LOADING
COMPLETION
Q13,D10
8.5V REG
Q851-854
5V REG
Q855,856
45 LAT
46 CKO
46 CKO
MAIN
SECTION
1
45
27
43
47
BATT
MD8V
SERVO 5V
Q804
SW1
(SELF)
(SELF)
SW4
(DOWN)
(DOWN)
WFCK
SBSO
Q806
POWER CONTROL
Signal Path
: CD
SW701
(RESET)
Q501
FL DRIVE
IC701
SYSTEM CONTROL
IC301(2/2)
X801
5MHz
14
15
21
20
12
13
19
18
16
17
14
20
45
44
47
48
42
4
2
43
40
49
41
58
76
77
50
79
61
55
17
16
19
18
62
54
60
59
56
57
F/R
TAPEMUTE
AMS
PLAY/AMS
POS0
POS1
POS2
POS3
SIRCS
BUS ON
BUS SO
BUS SI
BUS CKO
BUS CKI
10
11
12
14
17
A
B
C
SEL
AOUT
BU IN
SYS RST
RESET
RAMBU
REI
REO
CD/DISPLAY CONTROL
IC801(2/2)
SPECTRUM ANALYZER
IC804
19
17
67
16
18
66
60
26
25
24
24
23
77
14
6
10
9
5
8
1
2
3
80
58
59
LINK OFF
UNI SO
BUS ON
UNI SI
UNI CKI
BU IN
RESET
SP B
SP C
SP C
SP SEL
SP IN
X2
X1
SP A
8
9
VCC
A IN
BLK
CEI
CKO
SO
CEO
RES
LCK
CKO
SO
OE
SIO
CKO
LM EJ
LM LOD
CM ON
REEL
TP ON
AD ON
KEY IN0
KEY IN1
RC IN1
RC IN0
20
75
AVREF
ILL ON
61
62
63
64
BLK
CE
CL
DATA
FL DRIVE
IC702
63
64
62
61
CL
DATA
CE
RES
OUTPUT EXPANDER
IC703
4
3
2
17
LCK
CLK
DATA
OE
OE
EEPROM
IC802
5
6
SIO
CLK
BATT
CHECK
1
12
6
4
3
2
9
8
11
10
13
HIGH VOLT
CHECK
Q500
POWER
SWITCH
Q811,812
IR
RECEIVE
PH701
SIRCS
CONTROL
Q509
8
3
2
1
6
5
4
7
BATT
BATT
RAM BU
RESET
VCC
1
8
3
BU5V
69
70
CAPSTAN
MOTOR DRIVE
Q304,305
SA+B
BU5V
SIG
MAIN
SECTION
EN700
ROTARY
ENCODER
FL DRIVE
Q701-708
COLOR
SELECT
Q710,712
5V REG
Q711
POWER
SWITCH
Q805
10V REG
Q857-860
POWER
SWITCH
Q864
ILL POWER
SWITCH
Q861
ON/OFF
DRIVE
Q601,602
P36-P71
9GB-11GB
1GB-8GB
FL701
2
AUTO
MUSIC
SENSOR
DOLBY
NR
FL+
FL–
1GA-13GA
AM1-AM35
5-11
12
FWD
R-CH
HP901
PLAYBACK HEAD
TAPE L-CH
REV
R-CH
7
9
S901
(TAPE OPERATION)
EJECT
FF(NOR)
REW(NOR)
REV
FWD
(TAPE DET)
M
M
LOADING
MOTOR
DRIVE
IC402
M905
LOADING/TAPE
OPERATION MOTOR
M904
CAPSTAN/REEL
MOTOR
Q802
Q801
BATT
DRIVE5V
PON10V
PON
MAIN
SECTION
KEY-ACK
DETECT
Q505
KEY-ACK
DETECT
Q506
BU5V
BU5V
BATT
FL+
FL-
-42V
(GREEN) (AMBER)
R-CH
24
32
34
NR ON
EQ
MTL/NORMAL
MUTE
AMS
AMS/PLAY
BUFFER
REEL
SENSOR
8.5V REG
Q301-303
BATT
TA8.5V
KEY ACK
I/F+B
J301
04
29
27
FL
RL
L
R
L
R
TAPE EQ/DOLBY NR
IC304
IC304
RV100
MAIN SECTION
FL
LED
EE
4
3
BU5V
FWD/REV
L OUT
MTL
DOLON
DOLBY
LEVEL
(L-CH)
CN301
BUS INTERFACE
IC502
2
RESET
IC300
IC300
T601
D710 – 716
D727 – 731,736
LSW702,704
D509
LSW701, 702, 704-713,
719-727,
SW703, 715-717
D510
D519
D520
D518
REMOTE IN
BUS CONTROL IN
Signal Path
: TAPE
– 43 –
– 44 –
6-3. BLOCK DIAGRAM — TAPE SECTION —
WX-C770
(Page 46)
(Page 45)
(Page 45)
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