Sony MDS-S50 (serv.man2) Service Manual ▷ View online
57
MDS-S50
Pin No.
Pin Name
I/O
Description
76
VSS
—
Ground terminal
77 to 85
A17 to A9
O
Address signal output to the flash memory Not used (open)
86 to 89
SEL1 to SEL4
I
Not used (open)
90
WP
O
Writing protect signal output to the flash memory “L” active Not used (fixed at “L”)
91
VCC
—
Power supply terminal (+3.3V)
92
A8
O
Address signal output to the flash memory Not used (open)
93
VSS
—
Ground terminal
94 to 101
A7 to A0
O
Address signal output to the flash memory Not used (open)
102 to 113
D15 to D4
I/O
Two-way data bus with the flash memory Not used (open)
114
KEYBD-CLKCTL
O
Clock control signal output to the key board Not used (fixed at “L”)
115
I2CBUSY
I
Busy monitor signal input from the IIC bus
116
KEYBD-DAT
I
Serial data input from the key board Not used (fixed at “H”)
117
REC VOL A
O
Not used (open)
118
REC VOL B
O
Not used (open)
119 to 122
D3 to D0
I/O
Two-way data bus with the flash memory Not used (open)
123
JOG0
I
JOG dial pulse input from the rotary encoder (S713 . AMS >) (A phase input)
124
JOG1
I
JOG dial pulse input from the rotary encoder (S713 . AMS >) (B phase input)
125
LATCH
O
Not used (open)
126
REC
O
Power on/off control signal output for the beep sound drive “L”: power off, “H”: power on
(Used for the except US and Canadian models)
(Used for the except US and Canadian models)
127
COAX/OPT
O
Optical in or coaxial in selection signal output terminal “L”: optical in, “H”: coaxial in
Not used (open)
Not used (open)
128
FL-CS
O
Chip select signal output to the fluorescent indicator tube/LED driver (IC761)
129
I2CPOWER
I
Power supply detection signal input from the IIC bus
130
VSS
—
Ground terminal
131
STB
O
Relay drive signal output for the power on/off “L”: standby, “H”: power on
132
VCC
—
Power supply terminal (+3.3V)
133
IOP
I
Optical pick-up voltage detection signal input from the automatic power control circuit
134
DESTINATION
I
Destination setting input terminal “L”: AEP, UK, Hong Kong, Argentine, and Australian
models, “H”: US, Canadian, Singapore, and Brazilian models
models, “H”: US, Canadian, Singapore, and Brazilian models
135
MODEL
I
Model setting input terminal Fixed at “M” in this set
136
BEEP SW
I
BEEP switch (S831) input terminal “L”: beep off, “H”: beep on
(Used for the except US and Canadian models)
US and Canadian models: Not used (fixed at “L”)
(Used for the except US and Canadian models)
US and Canadian models: Not used (fixed at “L”)
137
KEY3
I
Key input terminal (A/D input) Not used (fixed at “H”)
138
KEY2
I
Key input terminal (A/D input) S721 to S724 and S726 (INPUT, PLAY MODE, REC MODE,
LEVEL/DISPLAY/CHAR, I/1) keys input
LEVEL/DISPLAY/CHAR, I/1) keys input
139
KEY1
I
Key input terminal (A/D input)
S711 to S715 (MENU/NO, YES, PUSH ENTER, CLEAR, Z) keys input
S711 to S715 (MENU/NO, YES, PUSH ENTER, CLEAR, Z) keys input
140
AVSS
—
Ground terminal (for analog system )
141
KEY0
I
Key input terminal (A/D input) S701 to S705 (z, x, M, m, u) keys input
142
VREF
I
Reference voltage (+3.3V) input terminal (for A/D converter)
143
AVCC
—
Power supply terminal (+3.3V) (for analog system )
144
NC
O
Not used (fixed at “L”)
58
MDS-S50
not supplied
BR, SP
MDM-7A
Front panel section
1
13
2
not
supplied
supplied
TR900
3
4
#3
#3
#3
#3
#3
#3
#3
5
6
3
8
10
9
15
16
11
12
14
14
14
14
7
A
A
B
B
7-1. CASE SECTION
SECTION 7
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.
• Hardware (# mark) list and accessories and
packing materials are given in the last of the
electrical parts list.
electrical 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
Les composants identifiés par une
marque 0 sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
marque 0 sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
The components identified by mark
0 or dotted line with mark 0 are
critical for safety.
Replace only with part number
specified.
critical for safety.
Replace only with part number
specified.
• Abbreviation
AR
: Argentina model
AUS : Australian model
1
1-678-518-11 PT BOARD
2
4-228-643-11 SCREW (+BVTTWH M3), STEP
3
3-363-099-01 SCREW (CASE 3 TP2)
(US, CND, AEP, UK, BR, SP, HK, AUS)
3
3-363-099-11 SCREW (CASE 3 TP2) (AR)
4
4-229-363-11 CASE
5
1-792-811-11 WIRE (FLAT TYPE) (23 CORE)
6
1-792-812-11 WIRE (FLAT TYPE) (27 CORE)
0 7
1-696-846-21 CORD, POWER (AUS)
0 7
1-757-813-11 CORD, POWER (BR)
0 7
1-777-071-61 CORD, POWER (AEP, UK, SP, HK)
0 7
1-783-531-31 CORD, POWER (US, CND)
0 7
1-783-941-32 CORD, POWER (AR)
* 8
3-703-244-00 BUSHING (2104), CORD
9
4-228-443-21 PANEL, BACK (US)
9
4-228-443-31 PANEL, BACK (CND)
9
4-228-443-41 PANEL, BACK (AEP, UK)
9
4-228-443-51 PANEL, BACK (SP)
9
4-228-443-61 PANEL, BACK (AUS)
9
4-228-443-71 PANEL, BACK (HK)
9
4-228-443-81 PANEL, BACK (BR, AR)
10
A-4725-596-A MAIN BOARD, COMPLETE (US, CND)
10
A-4725-602-A MAIN BOARD, COMPLETE (AEP, UK, HK, AUS)
10
A-4725-606-A MAIN BOARD, COMPLETE (SP)
10
A-4476-654-A MAIN BOARD, COMPLETE (BR, AR)
11
4-965-822-01 FOOT
12
4-977-699-11 LEG (F)
13
4-221-887-11 SCREW, +PTTWH (M3) (S) TITE
14
4-228-689-01 INSULATOR
15
1-569-972-21 SOCKET, SHORT 2P
16
1-678-519-11 VOL SEL BOARD (BR, SP)
0 TR900
1-435-543-11 TRANSFORMER, POWER (US, CND)
0 TR900
1-435-544-11 TRANSFORMER, POWER
(AEP, UK, HK, AR, AUS)
0 TR900
1-435-545-11 TRANSFORMER, POWER (SP)
0 TR900
1-435-967-11 TRANSFORMER, POWER (BR)
BR
: Brazilian model
CND : Canadian model
HK : Hong Kong model
SP
HK : Hong Kong model
SP
: Singapore model
59
MDS-S50
7-2. FRONT PANEL SECTION
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
X-4953-294-3 PANEL ASSY, FRONT (AR)
51
X-4953-579-3 PANEL ASSY, FRONT (BR, SP, HK, AUS)
51
X-4953-580-3 PANEL ASSY, FRONT (US, CND)
51
X-4953-729-2 PANEL ASSY, FRONT (AEP, UK)
52
4-228-430-01 KNOB (AMS) (AR)
52
4-228-430-11 KNOB (AMS) (BR, SP, HK, AUS)
52
4-228-430-21 KNOB (AMS) (US, CND, AEP, UK)
54
4-228-431-01 KNOB (VOL) (AR)
54
4-228-431-11 KNOB (VOL) (BR, SP, HK, AUS)
54
4-228-431-21 KNOB (VOL) (US, CND, AEP, UK)
55
4-228-630-01 SPRING (LID), TENSION COIL
56
4-228-629-61 LID (MD) (UK, BR, SP, HK, AR, AUS)
56
4-228-629-81 LID (MD) (US, CND, AEP)
57
4-951-620-01 SCREW (2.6X8), +BVTP
58
1-678-517-11 POWER SW BOARD
59
A-4725-597-A DISPLAY BOARD, COMPLETE (US, CND)
59
A-4725-603-A DISPLAY BOARD, COMPLETE
(AEP, UK, HK, AUS)
59
A-4725-607-A DISPLAY BOARD, COMPLETE (SP)
59
A-4476-650-A DISPLAY BOARD, COMPLETE (BR, AR)
61
1-792-815-11 WIRE (FLAT TYPE) (20 CORE)
62
4-228-440-01 FILTER (FL)
64
4-228-428-01 WINDOW (FL)
65
4-228-429-02 RING (AMS) (AR)
65
4-228-429-11 RING (AMS) (BR, SP, HK, AUS)
65
4-228-429-21 RING (AMS) (US, CND, AEP, UK)
not supplied
not supplied
51
64
54
55
56
57
52
65
57
62
61
57
59
57
57
58
60
MDS-S50
7-3. MECHANISM DECK SECTION-1
(MDM-7A)
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
* 201
4-996-267-01 BASE (BU-D)
202
4-908-618-21 SCREW (BTP) (2X6)
203
4-227-007-01 GEAR (SB)
204
4-227-025-01 BELT (LOADING)
205
3-372-761-01 SCREW (M1.7), TAPPING
206
4-227-002-01 GEAR, PULLEY
207
4-226-999-01 LEVER (HEAD)
208
X-4952-665-1 SPRING (SHT) ASSY, LEAF
209
A-4672-990-F LOCK (HOLDER)
210
4-229-533-02 SPRING (STOPPER), TORSION
211
4-227-012-01 SPRING (HOLDER), TENSION
212
4-227-019-03 PLATE (HOLDER) ASSY, RETAINER
213
4-227-013-01 SPRING (EJ), TENSION
214
4-226-996-01 LIMITTER (EJ)
215
4-226-995-01 SLIDER (EJ)
216
4-226-997-04 SLIDER
217
4-226-998-01 LEVER (CHG)
218
4-227-006-01 GEAR (SA)
219
A-4735-075-A HOLDER ASSY
220
4-226-994-01 GUIDE (L)
204
205
206
202
201
207
205
220
202
211
212
210
209
214
213
215
216
218
203
217
208
219
#2
not
supplied
supplied
Ver. 1.1
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