Sony MDS-JE770 Service Manual ▷ View online
57
MDS-JE770
40
ADA. LATCH
O
Chip select signal output to the AK4524. L: Active
41
EPN
I
Not used. (Fixed at L)
42
L : DINT1/H : CLIP
—
Not used. (open)
43
NC
—
Not used.
44
PROTECT
I
Recording-protection claw detection input from the protection detection switch. H: Protect
45
SCL
O
Clock signal output to the EEP-ROM.
46
CE
I
Not used. (Fixed at H)
47
EEP-WP
O
EEP-ROM write protect signal output. L: write possibility
48
XBUSY
I
Busy signal input from the CXD2662R
49
OUT-SW
I
Detection signal input from the loading out detection switch.
50
XLATCH
O
Latch signal output to CXD2662R.
51
PLAY-SW
I
Detection signal input from the playback position detection switch. L: PLAY
52
DIG-RST
O
Digital rest signal output to the CXD2662R and motor driver. L: Reset
53
REC-SW
I
Detection signal input from the recording position detection switch. L: REC
54
WR PWR
O
Laser power ON/OFF signal output. L: PLAY H: REC
55
LIMIT-IN
I
Detection input from the limit switch. L: Sled limit-In H: Sled limit-Out
56
MOD
O
Laser modulation switching signal output. (L: STOP, H : PLAY, pluse : REC)
57
LDON
O
Laser ON/OFF control output. H: Laser ON
58
SENS
I
Internal status (SENSE) input from the CXD2662R.
59
SHOCK
I
Track jump signal input from the CXD2662R.
60
SDA
I/O
Data signal input/output pin with the EEP-ROM.
61
REFLECT
I
Disk reflection rate detection input from the reflect detection switch. H: Disk with low reflection rate.
62
VCC
I
Power supply. (+3.3V)
63
NC
—
Not used.
64
GND
—
Ground.
65
LOAD LO
O
Loading motor voltage control output
66
LOAD OUT
O
Loading motor control output. H: eject
67
LOAD IN
O
Loading motor control output. H: loading
68 - 71
MODEL SEL 0 - 3
—
Not used.
72 - 80
NC
—
Not used.
Description
Pin Name
Pin No.
I/O
58
MDS-JE770
81
STB
O
Strobe signal output to the power supply circuit. H: Power supply ON: L: standby
82
BEEP SW
—
Not used.
83
REC
—
Not used.
84
FLCS
O
Chip select signal output to the MSM9202 (IC760)
85, 86
D.VOL0,1
—
Not used.
87, 88
JOG0, JOG1
I
Jog dial pulse input from the rotary encoder.
89
IOP
I
Optical Pick-up voltage (current) detect signal input.
90
DISTINATION
I
Model discrimination.
91
MODEL SEL
I
Model discrimination.
92
TIMER
I
Timer select signal input
93
KEY3
I
Key input pin (A/D input)
94, 95
KEY2, 1
I
Key input pin (A/D input)
96
AVSS
—
Ground. (Analog)
97
KEY0
I
Key input pin (A/D input)
98
VREF
I
A/D reference voltage.
99
AVCC
I
Power supply. (+3.3V)
100
NC
I
Not used. (Fixed at L)
Description
Pin Name
Pin No.
I/O
59
MDS-JE770
Description
Pin Name
Pin No.
I/O
1, 2
AD3, AD4
O
Fluorescent display tube (FL760) anode electrode drive
3-37
SEG1-35
O
Fluorescent display tube (FL760) segment electrode drive
38
VDISP1
I
Power supply for fluorescent display tube (FL760) drive
39-62
COM1-24
O
Fluorescent display tube (FL760) grid electrode drive
63
VFL1
I
Power supply for fluorescent display tube (FL760) drive
64
GND
—
Ground
65
OSC0
I
Input for CR oscillation
66
OSC1
O
Output for CR oscillation
67
RESET
I
Reset input
68
CS
I
Chip select signal input from system controller (IC1)
69
CP
I
Shift clock signal input from system controller (IC1)
70
DA
I
Serial data signal input from system controller (IC1)
71
VDD
I
Power supply
72
P1
O
LED drive signal output
73
P2
O
LED drive signal output
74
P3
O
LED drive signal output Not used in this set (NC)
75
P4
O
LED drive signal output
76
VFL2
I
Power supply for fluorescent display tube (FL760) drive
77
NC
—
Not used
78
VDISP2
I
Power supply for fluorescent display tube (FL760) drive
79, 80
AD3, AD4
O
Fluorescent display tube (FL760) anode electrode drive
• IC760 MSM9201-04GS-K FL DRIVER (DISPLAY BOARD)
60
MDS-JE770
7-1. CHASSIS SECTION
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
SECTION 7
EXPLODED VIEWS
NOTE:
•
•
-XX, -X mean standardized parts, so they may
have some differences from the original one.
have some differences from the original one.
•
Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
•
The mechanical parts with no reference number
in the exploded views are not supplied.
in the exploded views are not supplied.
•
Hardware (# mark) list and accessories and
packing materials are given in the last of this
parts list.
packing materials are given in the last of this
parts list.
• Color indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE)
KNOB, BALANCE (WHITE)
• • •
(RED)
↑
↑
Parts color Cabinet's color
•
Abbreviation
SP
SP
: Singapore model
The components identified by mark 0 or
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
9
8
7
7
8
8
10
Mechanism section
(MDM-7A)
(MDM-7A)
TR900
not
supplied
SP
not
supplied
not
supplied
not
supplied
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
#1
7
4
7
6
5
6
11
12
17
17
SP
UK
13
14
15
15
16
15
3
2
1
Front panel section
8
18
2
1
1
X-4953-448-1 FOOT ASSY
2
4-232-237-01 FOOT (DIA. 30)
3
4-233-025-61 PANEL, BACK (AEP)
3
4-233-025-81 PANEL, BACK (SP)
3
4-236-047-11 PANEL, BACK (UK)
4
9-910-999-31 RIVET (DIA. 3), NYLON
5
1-681-739-11 PT BOARD
6
4-221-887-11 SCREW, +PTTWH (M3) (S) TITE
7
4-228-689-01 INSULATOR
8
4-228-643-11 SCREW (+BVTTWH M3), STEP
9
1-792-811-11 WIRE (FLAT TYPE) (23 CORE)
10
1-757-928-11 WIRE (FLAT TYPE) (27 CORE)
*
11
3-703-244-00 BUSHING (2104), CORD
0 12
1-777-071-41 CORD, POWER
13
A-2007-925-A MAIN BOARD, COMPLETE (AEP,UK)
13
A-2007-931-A MAIN BOARD, COMPLETE (SP)
*
14
1-569-972-21 SOCKET, SHORT 2P
15
4-210-291-01 SCREW (CASE 3 TP2)...(BLACK)
15
4-210-291-11 SCREW (CASE 3 TP2)...(SILVER)
16
4-232-149-31 CASE (408226)...(BLACK)
16
4-232-580-31 CASE (408226)...(SILVER)
0 17
1-569-008-21 ADAPTOR, CONVERSION (SP)
017
1-770-019-11 ADAPTOR, CONVERSION PLUG 3P (UK)
18
1-681-745-11 VOL-SEL BOARD (SP)
0 TR900
1-437-339-11 TRANSFORMER, POWER (AEP,UK)
0 TR900
1-437-340-11 TRANSFORMER, POWER (SP)
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