Sony CDX-T70MX (serv.man2) Service Manual ▷ View online
37
CDX-T70MX
5-14.
IC PIN FUNCTION DESCRIPTION
•
MAIN BOARD IC301 HD6432238RWN28TEN (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
TEST
I
Test mode setting terminal “L”: test mode Not used
2
DECXRST
O
Reset signal output to the CD-ROM/MP3 decoder “L”: reset
3
DECSTBY
O
Standby mode control signal output to the CD-ROM/MP3 decoder “H”: standby
4
FOK
I
Focus OK signal input from the DSP “L”: NG, “H”: OK
5
GFS
I
Guard frame sync signal input from the DSP “L”: NG, “H”: OK
6
SCLK
O
Serial data reading clock signal output to the DSP
7
SENS
I
Internal status signal (sense signal) input from the DSP
8
CDCLK
O
Serial data transfer clock signal output to the DSP
9
CDLAT
O
Serial data latch pulse signal output to the DSP
10
CDDAT
O
Serial data output to the DSP
11
XRST
O
System reset signal output to the DSP “L”: reset
12
CVCC
—
Power supply terminal (+3.3V) (for system)
13
NC
O
Not used
14
VSS
—
Ground terminal
15
XQOK
O
Subcode Q OK pulse signal output to the DSP
16
XRDE
O
Read enable signal output to the DSP
17
XWRE
O
Write enable signal output to the DSP
18
DAC-DATA
O
Mode control data output to the D/A converter
19
DAC-CLK
O
Mode control data transfer clock signal output to the D/A converter
20
DAC-LAT
O
Mode control data latch pulse signal output to the D/A converter
21
ESPSEL
I
ESP mode setting terminal “L”: ESP on (fixed at “L” in this set)
22
TEXTSEL
I
CD text mode setting terminal “L”: CD text on (fixed at “L” in this set)
23
CFSEL
I
Custom file on/off setting terminal “L”: custom file on (fixed at “L” in this set)
24
DOUT SEL
I
Input terminal for digital out on/off setting “L”: digital out on Not used
25
MAG-SW
I
Magazine detect switch input terminal “L”: magazine in
26
MUTE
O
Audio line muting on/off control signal output “H”: muting on
27, 28
NC
O
Not used
29
CDON
O
D/A convert and servo sections power supply on/off control signal output “H”: power on
30
EVON
O
Mechanism deck section power supply on/off control signal output “H”: power on
31
PCTX
O
PC connecting output terminal for UART
32
PCRX
I
PC connecting input terminal for UART
33 to 35
NC
O
Not used
36
ELVF
O
Motor drive signal (elevator up direction) output to the elevator motor drive
37
ELVR
O
Motor drive signal (elevator down direction) output to the elevator motor drive
38
SCOR
I
Subcode sync (S0+S1) detection signal input from the DSP
39
NC
O
Not used
40
GRSCOR
I
Subcode sync (S0+S1) detection signal input from the DSP
41
NC
O
Not used
42
AVSS
—
Ground terminal (for A/D converter)
43 to 49
NCI
I
Not used
50
EHS
I
Elevator height position detection signal input from the elevator height sensor (A/D input)
51
NCI
I
Not used
52
MCK
I
Input of detection signal for the fine adjustment (elevator height (address) adjustment) of elevator
height position (A/D input)
height position (A/D input)
53
VREF
I
Reference voltage (+3.3V) input terminal (for A/D converter)
Ver. 1.2
38
CDX-T70MX
Pin No.
Pin Name
I/O
Description
54
AVCC
—
Power supply terminal (+3.3V) (for A/D converter)
55, 56
MD0, MD1
I
Setting terminal for the CPU operational mode “H”: single chip mode (fixed at “H” in this set)
57
OSC2
O
Sub system clock output terminal Not used
58
OSC1
I
Sub system clock input terminal Not used (fixed at “L”)
59
RES
I
System reset signal input from the SONY bus interface and reset signal generator “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
60
NMI
O
Not used (fixed at “H”)
61
STBY
O
Standby mode control signal output terminal Not used (fixed at “H”)
62
VCC
—
Power supply terminal (+3.3V)
63
XTAL
I
Main system clock input terminal (12.288 MHz)
64
VSS
—
Ground terminal
65
EXTAL
O
Main system clock output terminal (12.288 MHz)
66
FWE
I
Flash memory data write enable signal input terminal
67
MD2
I
Setting terminal for the CPU operational mode “H”: single chip mode (fixed at “H” in this set)
68
FL BOOT
I
Flash memory data write control signal input terminal “L” active
69
FL W
O
Flash memory data write control signal output (connecting FWE (pin 66))
70, 71
NC
O
Not used
72
MGLK-SW
I
Magazine in/out detect switch input terminal “L”: magazine in
73
DECINT
I
Interrupt signal input from the CD-ROM/MP3 decoder
74
NC
O
Not used
75
EJECT
I
Eject switch input terminal “L” active
76
SO
O
Serial data output to the SONY bus interface
77
SI
I
Serial data input from the SONY bus interface
78
SCLK
I
Serial data transfer clock signal input from the SONY bus interface
79
EEDATA
I/O
Two-way data bus with the EEPROM
80
SDA
I/O
I2C interface data input/output with the CD-ROM/MP3 decoder
81
SCL
O
I2C interface data transfer clock signal output to the CD-ROM/MP3 decoder
82
EECLK
O
Serial data transfer clock signal output to the EEPROM
83
NC
O
Not used
84
SQSO
I
Subcode Q data input from the DSP
85
SQCK
O
Subcode Q data reading clock signal output to the DSP
86 to 89
NC
O
Not used
90
R/RW SEL
O
CD-ROM/RW selection signal output “L”: CD-RW, “H”: CD-ROM
91
BUSON
I
Bus on/off control signal input from the SONY bus interface “L”: bus on
92
BUCHK
I
Battery detection signal input “H”: low battery (Normally: “L”)
93, 94
NC
O
Not used
95
LOADF
O
Motor drive signal (load chucking direction) output to the chucking motor drive
96
LOADR
O
Motor drive signal (save direction) output to the chucking motor drive
97
SINGLE
I
Setting terminal for the single disc/multiple discs mode
“L”: single disc mode, “H”: multiple discs mode (fixed at “H” in this set)
“L”: single disc mode, “H”: multiple discs mode (fixed at “H” in this set)
98
LOAD SW
I
Chucking end detect switch input terminal
“L”: When completion of the disc chucking, loading or save operation
“L”: When completion of the disc chucking, loading or save operation
99
SAVE SW
I
Chucking end detect switch input terminal
“L”: When completion of the disc chucking, loading or save operation
“L”: When completion of the disc chucking, loading or save operation
100
LIM SW
I
Sled limit in detect switch input terminal
“L”: When the optical pick-up is inner position
“L”: When the optical pick-up is inner position
39
CDX-T70MX
2
1
3
4
4
9
8
23
7
6
19
22
18
13
17
16
10
10
21
12
13
13
14
15
8
20
20
5
#1
#1
#1
#1
MG-276A-159
RV301
not supplied
6-1. CASE SECTION
SECTION 6
EXPLODED VIEWS
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Accessories are given in the last of the elec-
trical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
3-225-801-51 DOOR (S)
2
3-225-802-21 BUCKLE (S)
3
X-3381-750-1 PANEL ASSY, F/P
4
3-047-886-11 LEVER (FLT. 838)
5
3-225-798-21 CASE (UPPER S)
6
X-3379-931-2 ARM (FL. S) ASSY
7
X-3379-932-2 ARM (FR. S) ASSY
8
3-225-807-01 DAMPER (S)
9
X-3381-748-1 CASE (LOWER S) ASSY
10
3-225-808-02 SPRING (FLT. S)
12
A-3340-378-A MAIN BOARD, COMPLETE
13
3-935-636-11 SCREW (FP)
14
3-225-810-02 BUTTON (S) (EJECT)
15
3-225-805-01 ESCUTCHEON (S)
16
3-376-464-11 SCREW (+PTT 2.6X6), GROUND POINT
17
1-757-747-11 CORD (WITH CONNECTOR) (BUS/RCA)
18
1-680-823-11 JACK FLEXIBLE BOARD
19
1-683-528-11 JACK BOARD
20
3-233-246-01 CUSHION (CHASSIS 6T)
21
3-348-750-01 CUSHION (DAMPER)
22
3-233-248-01 CUSHION (JACK)
23
3-233-245-01 SPACER (CASE LOWER)
RV301
1-227-137-11 RES, VAR, SLIDE 10K
(ELEVATOR HEIGHT SENSOR)
#1
7-685-792-09 SCREW +PTT 2.6X6 (S)
The components identified by
mark 0 or dotted line with mark
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
Ver 1.1
40
CDX-T70MX
6-2. MECHANISM DECK SECTION-1
(MG-276A-159)
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
A-3315-334-D CHASSIS ASSY, MAIN
52
3-048-814-01 SCREW (M1.7X2.2)
53
3-227-131-01 BELT (TS)
54
3-973-975-11 DAMPER, OIL
56
3-227-133-01 BRACKET (MDM)
57
3-227-150-01 SPRING, TENSION
58
3-701-440-21 WASHER, 3.5
M104
A-3315-337-A MOTOR ASSY, MD (ELEVATOR)
#2
7-685-780-09 SCREW +PTT 2X3 (S)
#7
7-624-104-04 STOP RING 2.0, TYPE-E
#8
7-685-851-09 SCREW, +BVTT 2X4 (S)
M104
mechanism deck section-2
#2
#8
#8
#2
#7
#7
#2
57
52
58
53
51
54
56
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