Sony XDR-S50 Service Manual ▷ View online
13
XDR-S50
• IC PIN DESCRIPTION
• IC501 µPD78F05476GC (S)-UBT-A (SYSTEM CONTROL) (MICRO COMPUTER BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
BATT OFF
I
Battery off detect signal input (forced radio off)
2
LCD CONT
O
LCD power supply control signal output “H”: on, “L”: off
3
LIGHT
O
LCD back light control signal output “H”: on, “L”: off
4 to 9
P45 to P40
O
Not used in this set. (Open)
10
RESET
I
Reset signal input “L”: reset
11
XT2
I
Sub clock oscillation crystal pin (32.768 kHz)
12
XT1
O
Sub clock oscillation crystal pin (32.768 kHz)
13
FLMDO
I
Flash memory programing mode pull pin
14
EXCLK
I
Flash write clock signal input
15
XI
I
Not used in this set.
16
REGC
I
Regulator output stabillized capacitance connect pin (Connect to 0.47 µF.)
17
VSS
—
Ground pin
18
EVSS
—
Ground pin
19
VDD
—
Power supply pin
20
EVDD
—
Power supply pin
21 to 24
KS0 to KS3
O
Key source signal output 0 to 3
25
HOLD
I
Hold switch signal input “H”: on, “L”: off
26 to 29
NC
—
Not used. (Open)
30 to 33
KR7 to KR4
O
Key return signal output 7 to 4
34 to 36
KR3 to KR1
—
Not used in this set. (Open)
37
AMP SW
O
Audio amplifier operation switch signal output “H”: on, “L”: off
38
RADIO SW
O
DAB module operation switch signal output “H”: on, “L”: off
39
MUTE
O
Mute signal output “L”: on, “H”: off
40
AC CHK
I
AC adaputer connection detect signal input “H”: AC, “L”: DC
41
INTP2
I
Pull down pin (10 k
Ω
)
42
NC
—
Not used. (Open)
43 to 45
P51 to P53
—
Not used in this set. (Open)
46
RADIO OFF
I
Radio off voltage detect signal input “L”: Radio off
47
P17
—
Not used in this set. (Open)
48
INTP5
—
Not used in this set. (Open)
49
BEEP
O
Beep signal output
50
RXD6
I
Flash write signal input
51
TXD6
I
Flash write signal input
52
P12
—
Not used in this set. (Open)
53
RXD0
I
UART data signal input
54
TXD0
I
UART data signal output
55, 56
P54, P55
—
Not used in this set. (Open)
57
SHIMUKE2
I
Not used. (Pull down)
58
SHIMUKE1
I
Destination select signal input (Clock) “L”: 12H, “H”: 24H
59
AVREF
I
A/D converter reference voltage signal input
60
AVSS
—
Ground pin
61
VDET2
I
Reducing voltage detect signal input
62 to 68
P26 to P20
—
Not used in this set. (Open)
69
P130
—
Not used in this set. (Open)
70
NC
—
Not used. (Open)
71 to 74
P03 to P00
—
Not used in this set. (Open)
14
XDR-S50
75
LCD CS
O
LCD serial communication chip select signal output
76
LCD SO
O
LCD serial communication data signal output
77
NC
—
Not used. (Open)
78
LCD CLK
O
LCD serial communication clock signal output
79, 80
NC
—
Not used. (Open)
Pin No.
Pin Name
I/O
Pin Description
15
XDR-S50
SECTION 4
EXPLODED VIEWS
1
3-918-696-11 SCREW (M3X6 LOCK ACE)
2
2-683-983-01 CABINET (REAR) (BLACK)...(BLACK)
2
2-683-983-11 CABINET (REAR) (WHITE)...(WHITE)
3
3-252-827-01 SCREW (B2.6), (+) BV TAPPING
4
2-514-255-01 PLATE (ANT), CONTACT
5
2-698-560-01 TERMINAL (+, –), BATTERY
6
2-683-984-01 LID, BATTERY (BLACK)...(BLACK)
6
2-683-984-11 LID, BATTERY (WHITE)...(WHITE)
7
3-267-201-01 CUSHION (BATTERY CASE LID)
8
2-683-988-01 KNOB (TUNE) (BLACK)...(BLACK)
8
2-683-988-11 KNOB (TUNE) (WHITE)...(WHITE)
9
2-683-987-01 KNOB (VOL) (BLACK)...(BLACK)
9
2-683-987-11 KNOB (VOL) (WHITE)...(WHITE)
10
3-252-747-01 SPRING, RING
11
3-228-708-01 SPRING (JOG)
12
3-035-166-21 SPACER (LCD)
ANT1
1-501-222-91 ANTENNA, TELESCOPIC (FM) (FOR BLACK)
ANT1
1-501-362-31 ANTENNA, TELESCOPIC (FM) (FOR WHITE)
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
NOTE:
•
The mechanical parts with no reference
number in the exploded views are not supplied.
number in the exploded views are not supplied.
•
Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
•
-XX and -X mean standardized parts, so
they may have some difference from the
original one.
they may have some difference from the
original one.
•
Color Indication of Appearance Parts
Example :
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
•
Accessories are given in the last of this parts list.
4-1.
REAR CABINET SECTION
R
R
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
ANT1
cabinet (front) section
chassis section
9
10
11
12
8
3
1
2
4
3
3
3
5
6
7
3
16
XDR-S50
51
3-254-070-01 SCREW
52
2-683-985-01 BUTTON (TOP) (BLACK)...(BLACK)
52
2-683-985-11 BUTTON (TOP) (WHITE)...(WHITE)
53
2-683-989-01 KNOB (HOLD) (BLACK)...(BLACK)
53
2-683-989-11 KNOB (HOLD) (WHITE)...(WHITE)
54
X-2176-005-1 CABINET (FRONT) SUB ASSY (B)
(BLACK)...(BLACK)
54
X-2176-006-1 CABINET (FRONT) SUB ASSY (W)
(WHITE)...(WHITE)
55
2-683-991-01 WINDOW (FOR BLACK)
55
2-683-991-11 WINDOW (FOR WHITE)
56
2-888-799-01 SHEET (SPEAKER)
57
X-2159-362-1 NET (SPEAKER) ASSY (B) (BLACK)...(BLACK)
57
X-2159-363-1 NET (SPEAKER) ASSY (W) (WHITE)...(WHITE)
58
3-258-923-02 CUSHION (E)
SP301
1-826-488-11 SPEAKER (7.7cm)
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
4-2.
CABINET (FRONT) SECTION
SP301
51
52
53
54
55
56
57
58
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