Sony MDX-C800REC (serv.man2) Service Manual ▷ View online
25
Pin No.
Pin Name
I/O
Pin Description
56
TSTSO
O
Data output for test mode display (Normally, open)
57
TSTCKO
O
Clock output for test mode display (Normally, open)
58 – 62
NC
—
Not used (Open)
63
VSS
—
Ground pin
64
NC
—
Not used (Open)
65
DACRST
O
Reset output to DAC IC
66
DACCES
O
Chip enable output to DAC (SUB)
67
DAC SO
O
DAC control serial data output
68
DAC CKO
O
DAC control serial clock output
69
DAC CEF
O
Chip enable output to DAC (FRONT)
70
DAC CER
O
Chip enable output to DAC (REAR)
71, 72
NC
—
Not used (Open)
73
XIA
—
Input for sub clock oscillation (Fixed at “H” in this set)
74
XOA
—
Input for sub clock oscillation (Connect to ground pin in this set)
75
CC-XINT
I
XINT interruption input from MD servo IC
76
BUS-ON
I
BUS ON input of SONY BUS
77
BU-IN
I
Power instantaneously cut off check port of system
78
SQ-SY
I
SUBQ SYNC interruption input from MD servo IC
79
DISC-IN
I
DISC-IN (cartridge in switch) sensor input of MD mechanism deck
80
A-ATT
O
Audio attenuator output (“H”: ATT ON)
81
DQ-SY
I
Subcord Q sync of DIGITAL IN U-bit CD format from MD servo IC
82
NC
—
Not used (Open)
83
EJECT IN
I
EJECT (MD) switch input
84
SORCE
I
Select signal input of signal input (analog/digital input) (Not used in this set)
85
LOCK
O
Output of CLV lock condition when test mode (Normally, open)
86
HSTX
—
Hardware standby input (Connect to SYSRST in this set)
87
MD2
—
CPU operation mode designation input (Connect to ground pin in this set)
88, 89
MD1, 0
—
CPU operation mode designation input (Fixed at “H” in this set)
90
RSTX
—
Reset input (Fixed at “H” in this set)
91
VSS
—
Ground pin
92
X0
I
Main clock oscillation input (3.68 MHz)
93
X1
O
Main clock oscillation output (3.68 MHz)
94
VCC
—
Power supply pin (+5 V)
95, 96
NC
—
Not used (Open)
97
RAMBU
I
RAM backup detection input
98, 99
NC
—
Not used (Open)
100
MD/REC-ON
O
Power control output for overlight head
101
RF-ON
O
Power control output for RF AMP
102
REC-P
I
Detection signal input from REC position detection switch (“L”: REC position)
103
PLAY-P
I
Detection signal input from PLAY position detection switch (“L”: PLAY position)
104
PROTECT
I
Recording prevention claw detection input from write protect detection switch
(“H”: Write Protect)
105
REFLECT
I
Desk reflectance detection input from reflect detection switch
(“H”: Low reflectance disk IN)
106
PACK-IN
I
PACK-IN (LOADING END SENSOR) sensor input of MD mechanism deck
107
NC
—
Not used (Open)
108
REC/PLAY
I
Change select input on recording mechanism deck and playing mechanism deck
(“H”: REC, “L”: PLAY) (Fixed at “H” in this set)
109
DFCTSEL
I
Select input on used of DEFECT2 function (Not used in this set (Fixed at “H”))
110
WRPWR
O
Laser power select signal output to optical pick-up or CXD2652AR
(“L”: READ POWER, “H”: WRITE POWER)
111
PREHEAT
O
Preheat control output (“H”: Preheat ON)
112
MDRST
O
Reset output to MD servo IC
26
Pin No.
Pin Name
I/O
Pin Description
113
MDLAT
O
Latch output to MD servo IC
114
SERVO-ON
O
Power control output to MD servo IC
115 – 118
MNT3 – 0
I
Monitor 3 – 0 input of CXD2652AR
119
VSS
—
Ground pin
120
SENS
I
Sens input from MD servo IC
27
• IC650 HD64F2357F (DISPLAY CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1, 2
PG3, 4
O
Not used in this set (Open)
3
VSS
—
Ground pin
4
NC
—
Not used in this set (Open)
5
VCC
—
Power supply pin (+5 V)
6 – 9
PC0 – 3
O
Not used in this set (Open)
10
VSS
—
Ground pin
11 – 14
PC4 – 7
O
Not used in this set (Open)
15 – 18
PB0 – 3
O
Not used in this set (Open)
19
VSS
—
Ground pin
20 – 23
PB4 – 7
O
Not used in this set (Open)
24
PA0
O
Signal out select control output to the IC652 (BA3834F)
25
PA1
O
Signal out select control output to the IC652 (BA3834F)
26
PA2
O
Signal out select control output to the IC652 (BA3834F)
27
PA3
O
Signal out select control output to the IC652 (BA3834F)
28
VSS
—
Ground pin
29 – 32
PA4/IRQ4 – PA7/IRQ7
O
Not used in this set (Open)
33
SP LAT
I
Not used in this set (Open)
34
P66/IRQ2
I
Not used in this set (Open)
35, 36
VSS
—
Ground pin
37
P65/IRQ1
O
Not used in this set (Open)
38
BUS ON
I
SONY BUS on input “L”: Active
39
VCC
—
Power supply pin (+5 V)
40
CD/MD
O
Not used in this set (Open)
41 – 43
PE1 – 3
O
Not used in this set (Open)
44
VSS
—
Ground pin
45
TIR IND
O
Not used in this set (Open)
46, 47
PE 5, 6
O
Not used in this set (Open)
48
MD LOCK
O
Not used in this set (Open)
49
BU IN
I
Backup power supply detection input “H”: Back up
50
LINK OFF
O
Link off output
51
PD2
O
Not used in this set (Open)
52
ILL ON
O
Illumination power supply control output
53
VSS
—
Ground pin
54, 55
NCO
O
Not used in this set (Open)
56
PD6
O
Not used in this set (Open)
57
BOOT
I
Display microcomputer write control input
58
VCC
—
Power supply pin (+5 V)
59
NC
—
Not used in this set (Open)
60
TX/LCDDATA
O
LCD driver serial data output/Frash microcomputer write data output
61
SP SI
I
DSP serial data input
62
RX/DOOR SW
I
Flash microcomputer write data input/Door detection input
63
SP SCK
I
Not used in this set (Open)
64
LCD CLK
O
LCD driver serial clock output
65
VSS
—
Ground pin
66
LCD CEO
O
LCD chip enable signal output
67, 68
VSS
—
Ground pin
69
LCDINH
O
Not used in this set (Open)
70
LCDCE1
O
LCD chip enable signal output
71
P63
O
Not used in this set (Open)
72 – 78
P27 – 21
O
Not used in this set (Open)
79
FL W
O
Flash write control output
80
FWE (L)
O
Flash write enable input
28
Pin No.
Pin Name
I/O
Pin Description
81
RES
I
System reset input
82
NMI (H)
I
Non-maskable interruption input (Connect to pin rl (BU IN).)
83
STBY (H)
I
Hardware standby input “H”: Not used
84
VCC
—
Power supply pin (+5 V)
85
XTAL
O
Crystal oscillation output (18.432 MHz)
86
EXTAL
I
Crystal oscillation input (18.432 MHz)
87
VSS
—
Ground pin
88
PF7
O
Not used in this set (Open)
89
VCC
—
Power supply pin (+5 V)
90 – 96
PF6 – 0
O
Not used in this set (Open)
97
UNI-SO
O
SONY BUS system serial data output
98
UNI-SI
I
SONY BUS system serial data input
99, 100
VSS
—
Ground pin
101
UNI-SCK
I
SONY BUS system serial clock input
102
P53/ADTRG
O
Not used in this set (Open)
103
AVCC
—
Power supply pin (+5 V) of analog macro (D/A, A/D etc.)
104
VREF
—
A/D, D/A converter reference voltage pin (+5 V)
105
P40/AN0
I
Peak hold voltage detection input from the IC652 (BA3834F)
106 – 110
P41/AN0 – P45/AN5
I
Not used in this set (Connect to ground in this set)
111
P46/AN6/DA0
I
Not used in this set (Connect to ground in this set)
112
P47/AN7/DA1
I
Not used in this set (Connect to ground in this set)
113
AVSS
—
Ground pin
114
VSS
—
Ground pin
115 – 122
P17 – P10
O
Not used in this set (Open)
123 – 125
MD0 – 2 (H)
I
Operation mode setting input (Fixed at “H” in this set)
126 – 128
PG0 – 2
O
Not used in this set (Open)
Click on the first or last page to see other MDX-C800REC (serv.man2) service manuals if exist.