Sony CDX-C6850R Service Manual ▷ View online
– 53 –
SE3L
SE3R
MUTE
SDA
SCL
PAUSE
OUT FL
OUT FR
OUT RL
OUT RR
SUBOUT+
SUBOUT–
VDD
GND
CREF
SE1L
SE1R
MD+
MD–
CDL+
CDL–
CDR–
CDR+
PDR
PDGND
PDL
SE2L
SE2R
INPUT
GAIN &
AUTO
ZERO
ZERO
PAUSE
DETECT
INPUT MUL
TIPLEXER &
MIXING ST
AGE
REAR SIDE
SELECTOR
FRONT SIDE
SELECTOR
LOUDNESS
CONTROL
CIRCUIT
INPUT
GAIN
BEEP
LOUDNESS
CONTROL
CIRCUIT
SOFT
MUTE
VOLUME
CONTROL
CIRCUIT
COMPANDER
TREBLE/
BASS
CONTROL
CIRCUIT
SUBWOOFER
OUT
FADER
SUBWOOFER
LP
IIC
BUS
DIGITAL CONTROL CIRCUIT
POWER
SUPPLY
FRONT
FADER
FRONT
FADER
REAR
FADER
REAR
FADER
VOICE BANDPASS
HP
LP
SDA
SCL
1
2
3
4
5
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
3
4
5
6
7
18
19
20
17
16
15
14
8
9
10
13
12
11
2
1
CLK
CONTROL
INPUT
INTERFACE
DIGITAL
FILTER
5LEVE DAC
LOWPASS FILTER
CMOS
AMP
5LEVEL DAC
LOWPASS FILTER
CMOS
AMP
MODE
CONT
ROL
XTI
DGND
VDD
LRCIN
DIN
BCKIN
ZERO
D/C R
VOUTR
AGND
VCC
VOUTL
D/C L
MODE
RSTB
MD/DM0
MC/DM1
ML/MUTE
CLKO
XTO
NOISE SHAPER
REGULATOR
VREF
+
–
+
–
THERMAL
SHUT
DOWN
OVER
VOLTAGE
PROTECT
PROTECT
CIRCUIT ON
5
1
2
3
4
AMP
ON
AMP
OUT
GND
VCC
VDD
OUT
OUT
ON
ON
5.7V
IC901 BA4903
IC401 TDA7462
IC702 PCM1717E-ST2
– 54 –
1
2
3
4
5
5
6
7
8
9
10
14
13
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS ON
RST
BATT
CLK
VREF
DATA
GND
VCC
RST
BUS ON
BUS ON
CLK IN
BU IN
DATA IN
DATA OUT
1
2
3
4
5
6
7
14
13
12
11
10
9
8
TIMING
&
SYNCHRONIZATION
SIGNAL
PROTECTION
32 WORD X 8 BIT
DUAL PORT RAM
DUAL PORT RAM
CRC
CHECKER
CPU INTERFACE
VDD
VDD
DQSY
SRDT
SCLK
SW2
SW1
TEST
EXCK
SBSO
SCOR
WFCK
MCK
XMODE
GND
SWITCH
LP1/LP2
LP1/LP2
PORT
EXTENSION
CHARGE
PUMP
TEST
LOGIC
16 BIT PROG
COUNTER
REF
OSCILLATOR
TIMER
CONTROL
SWITCH
OUT
SUPPLY
&
POWER ON
RESET
11-21 BIT PROG COUNTER
14 BIT PROG
COUNTER
SWITCH
AM/FM
PHASE
COMP
INLOCK
DETECTOR
11 BIT PROG
COUNTER
SWITCH
SWM/DIR
6 BIT PROG
COUNTER
SWITCH
SWM/DIR
PRE COUNTER
:32/33
I
2
C BUS
INTERFACE
SWITCH
AM/FM
VDD1
1
2
3
4
6
7
8
5
9
10
11
14
12
13
17
18
19
20
21
22
23
24
25
26
27
28
16
15
LP FM
LP HC
LP AM
V REF
LCL/DX
SEEK
NIL
MONO
OSCIN
OSCOUT
NC
SCL
SDA
IF AM
LPOUT
VDD2
GND AM
AM IN
FM IN
NC
GND D
VDD1
ADDR
HFREF
AMOSC
DOUT/INLOCK
SSTOP
IF FM
IC703 LC89170M-T
IC601 TDA7427AD1TR
IC803 BA8270F-E2
– 55 –
4-15. IC PIN DESCRIPTION
• IC801 MB90574APMT-G-198-BND (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
LD ON
O
Laser ON/OFF control output
2
FOK
I
Focus OK signal detection input
3
XLAT25
O
CD signal processing latch output
4
DATA25
O
CD signal serial data output
5
XRST
O
Reset output to CD signal processor IC.
6
GFS
I
GFS signal detection input
7
NIL
—
Not used. (Connect to ground in this set.)
8
VCC
—
Power supply pin (+5 V)
9 – 11
NIL
—
Not used. (Open)
12
FLS SI/NOSE1
I
Front panel attachment detection input
13
LCD SO/FLS SO
O
LCD serial data output
14
LCD CKO
O
LCD serial clock output
15
BEEP
O
BEEP output
16
NIL
—
Not used. (Open)
17
SQ SI
I
Sub Q data input
18
NIL
—
Not used. (Connect to ground in this set.)
19
SQ CKO
O
Sub Q read clock output
20
UNI SI
I
BUS system serial interface input
21
UNI SO
O
BUS system serial interface output
22
UNI CK
I/O
BUS system serial clock input/output
23
C IN
I
Track jump No. count input
24
SIRCS
I
Remote commander input
25
TXT SI
I
CD-TEXT data input
26
NIL
—
Not used. (Connect to ground in this set.)
27
TXT CKO
O
CD-TEXT data read clock output
28
CLOK25
O
CD signal processing serial clock output
29
SYSRST
O
System reset output
30
DEEMPH
O
De-emphasis output
31
AMP ATT
O
Power amplifier attenuator control output
32
MD ON
O
CD mechanism power control output
33
VSS
—
Ground
34
C
—
Power stabilization capacitor pin
35
CD ON
O
CD power control output
36
BUS ON
O
BUS ON control output
37
NIL
O
Power control output of A/D conversion.
38
DVCC
—
VREF input of D/A converter.
39
DVSS
—
Ground of D/A converter.
40
NIL
—
Not used. (Open)
41
ANGLE
O
LCD view angle alignment output
42
AVCC
—
Analog power supply pin (+5 V)
43
AVRH
—
VREF + input of A/D converter.
44
AVRL
—
VREF – input of A/D converter.
45
AVSS
—
Analog ground
46 – 48
KEY IN0 – 2
I
Key input 0 – 2
49
RC IN0
I
Rotary commander input 0
50
QUALITY
I
Noise detection input
51
NIL
—
Not used. (Connect to ground in this set.)
52
MPDH
I
Tuner multi path input
53
S-METER
I
S-meter voltage detection input
54
VCC
—
Power supply pin (+5 V)
55
NS MASK
O
Noise detection output
– 56 –
Pin No.
Pin Name
I/O
Pin Description
56
AMP ON
O
Power amplifier power control output
57
TXT ON
O
Reset output to CD-TEXT decoder IC.
58
VOL ATT
O
Electric volume mute control output
59
NIL
—
Not used. (Open)
60
ATT
O
System attenuate control output
61
RC IN1
I
Rotary commander shift key input 1
62
TU ATT
O
Tuner attenuate output
63
VSS
—
Ground
64
NIL
—
Not used. (Open)
65
SSTOP
I
IF counter result signal detection input of PLL.
66
TEST
I
Test mode initial setting detection input
67
DAVN
I
RDS IC data acquisition detection input
68
FM ON/AM ON
O
FM ON output
69
TU ON
O
Tuner power control output
70
SDA
I/O
I
2
C BUS serial data input/output
71
SCL
O
I
2
C BUS serial clock output
72
NOSE2
I
Front panel OPEN detection input
73
X1A
O
Sub ceramic oscillator output (32 kHz)
74
X0A
I
Sub ceramic oscillator input (32 kHz)
75
SCOR
I
SCOR signal detection input
76
BU IN
I
Backup power detection input
77
DQSY
I
CD-TEXT data setting completion signal detection input
78
CD SENS
I
CD SENS signal detection input
79
NIL
I
Key input acknowledge
80
TEL ATT
I
Telephone attenuate detection input
81
ST/MONO
I/O
Tuner stereo signal detection input/forced monaural output
82
SEEKOUT
O
SEEK output
83
SD IN
I
Signal detector input
84
WIDE
O
WIDE select output
85
NARROW
O
NARROW select output
86
HSTX
—
Hardware standby input (Connect to pin (º (RESET).)
87
MD2
—
Operation mode input (Connect to ground in this set.)
88, 89
MD1, 0
—
Operation mode input (Connect to VCC in this set.)
90
RESET
I
Reset input
91
VSS
—
Ground
92
X0
I
Main ceramic oscillator input (4.19 MHz)
93
X1
O
Main ceramic oscillator output (4.19 MHz)
94
VCC
—
Power supply pin (+5 V)
95
COM8V ON
O
COM 8V control output
96
NIL
—
Not used. (Open)
97
AREA1
I
Destination select input 1 (Fixed at “L” in this set.)
98
AREA2
I
Destination select input 2 (Fixed at “L” (AEP, UK model) or “H” (German model)
in this set.)
99
LOUD
I
Fixed at “H” in this set.
100
BAND
I
Fixed at “H” in this set.
101
ACC IN
I
Accessory power detection input
102, 103
PH3, 2
I
Disc insertion detection photo sensor input (Fixed at “H” in this set.)
104
LCD CE
O
LCD chip enable output
105
FLS W
I
Flash write input (Fixed at “H” in this set.)
106, 107
RE IN0, 1
I
Rotary encoder input
108
ILL ON
O
Illumination power control output
109
PW ON
O
System power control output
110
NIL
—
Not used. (Open)
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