Sony MEX-1GP Service Manual ▷ View online
33
MEX-1GP
• IC BLOCK DIAGRAMS
IC1 BA5968FP-E2 (SERVO Board (2/2))
IC600 TDA7333013TR (MAIN Board (1/3))
1
2
11
13
14
12
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
MUTE
FWD
FWD
LDCTL
NC
OPOUT1
NC
NC
OPOUT2
POWVCC
VCC
VOL–
VOL+
VOL2–
VOL2+
VO1–
VO1+
REV
OPIN4+
OPIN4–
OPOUT4
OPIN3+
OPIN3–
OPOUT3
MUTE
VOL+
GND
VOL3–
VOL3+
VOL4–
VOL4+
REV
OUTR OUTF
10
9
8
7
6
5
28
27
26
25
24
23
22
21
20
19
18
17
16
15
4
3
VDDA
INTERPOLATOR
RAM
BUFFER
&
CONTROL
LOGIC
TEST LOGIC
&
PIN MUX'S
I
2
C/SPI
INTERFACE
BAND PASS
FILTER
SIGMA DELTA
CONVERTER
SINC4
FILTER
REF3
REF2
REF1
VSS
VDDD
RESETN
TM
1
MPX
16
CSN
SDAOUT
RDSREG
3
INTN
MPX
SINC4REG
SDAIN
SCK
SPI
TESTREG
SCK
SPI
TESTREG
14
2
3
4
5
6
7
8
INTN
15
SA
13
SDA
12
SCL
11
OSCILLATOR
XTO
10
XTI
9
RDS
DEMODULATOR &
SYNCHRONIZATION
2
34
MEX-1GP
IC401 TDA7419TR (MAIN Board (1/3))
2
3
1
4
5
6
7
SUPPLY
I2C BUS
DIGITAL CONTROL
INPUT
MULTIPLEXER
15
18
17
16
16
19
20
21
22
23
24
27
25
26
28
8
9
10
11
12
13
14
SOFTSEP
MONO FADER
SOFTSEP
MONO FADER
SOFTSEP
MONO FADER
SUBWOOFER
L.P.F
MIX
MIX
HPF
BUSS
MIDDLE
SPECTRUM
ANALYZER
TREBLE
SOFTSTEP
VOLUME
IN GAIN
AUTO ZERO
SOFT
MUTE
LOUDNESS
HPF
SOFTSEP
MONO FADER
SOFTSEP
MONO FADER
SOFTSEP
MONO FADER
ACOUTR
ACINR
ACINL
ACOUTL
SE3L
SE3R
SE2L
SE2R
SE1L
SE1R
DIFFL
DIFFG
DIFFR
CREF
GND
RL
OUTRF
OUTRR
OUTLR
OUTLF
MUTE
SCL
SDA
VDD
SAIN
SAOUT
VREF
OUTRR2
35
MEX-1GP
IC100 TDA8588AJ/N2/R1 (MAIN Board (2/3))
MUTE
MUTE
ENABLE
LOGIC
STANDBY
MUTE
CHIP DETECT
DIAGNOSTIC
PROTECTION
DIAGNOSTIC
SWITCH
REGULATOR
SWITCH
REFERENCE
VOLTAGE
LOADDUMP
PROTECTION
TEMPERATURE
PROTECTION
BACK-UP
SWITCH
REGULATOR
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
TAB
FL-
FL+
RL-
RL+
RL
SGND
RR
RR+
RR-
FR+
FR-
DIAG
SW2
SW1
REG3(SERVO)
REG4(MECHA)
VP
REG2(U-COM)
SDA
SCL
VP2
PGND3
SVR
FL
FR
ACGND
PGND2
VP1
STB
PGND1
RST
CRES
REG1(AU8V)
GND
REG5(DISP+B)
CBU
FL
RL
RR
VP
FR
I2C BUS
IC900 BA8271F-E2 (MAIN Board (3/3))
1
2
3
4
5
5
6
7
8
9
10
14
13
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUSON
RST
BATT
CLK
VREF
GND
VCC
RST
BUSON
BUSON
CLK-IN
B/U-C
DATA IN
DATA OUT
DATA I/O
36
MEX-1GP
• IC PIN DESCRIPTIONS
• IC3 MB90486BPFV-G-177E1 (CD SYSTEM CONTROL) (SERVO BOARD (2/2))
Pin No.
Pin Name
I/O
Pin Description
1
CDON_1500MV
O
Servo 1.5 V power supply control signal output
2 to 5
NC
—
Not used. (Open)
6
DRVON
O
Motor drive mute signal output
7
CD_BUS0
I/O
Bus data input/output 0
8
CD_BUS1
I/O
Bus data input/output 1
9
VSS
—
Ground
10
CD_BUS2
I/O
Bus data input/output 2
11
CD_BUS3
I/O
Bus data input/output 3
12
CD_BUCK
O
Bus clock signal output
13
CD_XCCE
O
Chip enable signal output
14
CD_XRST
O
Reset signal output
15
CD_ZDET
I
Zero detection signal input
16 to 20
NC
—
Not used. (Open)
21
VCC
—
Power supply pin (+3.3 V)
22
DAC_ZDETL
I
Zero data detection signal input (L-ch) (Connected to Vss)
23
DAC_ZDETR
I
Zero data detection signal input (R-ch) (Connected to Vss)
24
NC
—
Not used. (Open)
25
RXD
I
UART RXD data input (MCBUS/Flash data input)
26
TXD
O
UART TXD data output (MCBUS/Flash data output)
27
DEC_SSTBY
O
SRAM STANDBY mode control signal output
28, 29
NC
—
Not used. (Open)
30
DEC_INT
I
Request signal input
31, 32
NC
—
Not used. (Open)
33
AVCC
—
Power supply pin (+3.3 V) for A/D converter
34
AVRH
—
External reference voltage for A/D converter
35
AVSS
—
Ground
36
NC
—
Not used. (Open)
37
DEC_XMUTE
O
Mute signal output L: mute
38, 39
NC
—
Not used. (Open)
40
VSS
—
Ground
41
NC
—
Not used. (Open)
42
MEC_LIMIT
I
Sled limit in detection switch signal input
43
MEC_LOAD
O
Loading motor signal output (Load direction)
44
MEC_EJECT
O
Loading motor signal output (Eject direction)
45
MEC_INSW
I
Pack-in detection signal input
46
MEC_DSW
I
Chucking end detection switch signal input
47, 48
MD0, MD1
I
CPU operation mode designation signal input (Connected to Vcc.)
49
MD2
I
CPU operation mode designation signal input (Connected to Vss.)
50
BUS_ON
I
Bus on signal input L: bus on
51
BU_IN
I
Backup on/off signal input H: backup on, L: backup off
52
NC
I
Not used. (Open)
53
MEC_SELFSW
I
Disc insert detection switch signal input L: disc in interruption
54, 55
NC
—
Not used. (Open)
56
UNISI
I
Serial data input
57
UNISO
O
Serial data output
58
UNICKI
I
Serial clock input
59
LINEOFF
O
Line off signal output
60
A_ATT
O
Audio attenuation signal output H: ATT on
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