Sony ICF-CD873 Service Manual ▷ View online
– 41 –
6-8.
IC PIN FUNCTION DESCRIPTION
•
MAIN BOARD IC401
µ
PD753012AGC-F17-3B9 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1 to 10
SEG12 to SEG21
O
Segment drive signal output to the liquid crystal display (LCD401)
11, 12
SEG22, SEG23
O
Segment drive signal output terminal Not used (open)
13 to 16
KS0 to KS3
O
Key strobe signal output to the key matrix
17
VERSION1
O
Initialize destination output terminal
18
VERSION2
O
Initialize destination output terminal Not used (open)
19
ALARM
O
Alarm data output terminal Used for the US model only
20
BASS ON
O
Mega bass on/off selection signal output to the mega bass power amplifier (IC351)
“L”: mega bass on
“L”: mega bass on
21 to 23
COM0 to COM2
O
Common drive signal output to the liquid crystal display (LCD401)
24
COM3
O
Common drive signal output terminal Not used (open)
25
BIAS
O
Bias output for the liquid crystal display drive
26 to 28
VLC0 to VLC2
—
Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
29
CD ADJ
I/O
At initial mode: Setting terminal for the test mode (manual mode) “L”: manual mode
At normal mode: E-F balance control signal output to the CXA1782BQ (IC501) “H” active
At normal mode: E-F balance control signal output to the CXA1782BQ (IC501) “H” active
30
CLOCK
O
Serial data transfer clock signal output to the CXD2508AQ (IC502)
31
XLT
O
Serial data latch pulse signal output to the CXD2508AQ (IC502)
32
DATA
O
Serial data output to the CXD2508AQ (IC502)
33
VSS
—
Ground terminal
34
X-RESET
O
System reset signal output to the CXA1782BQ (IC501), CXD2508AQ (IC502) and BA6196FP
(IC503) “L”: reset
(IC503) “L”: reset
35
POWER ON
O
Front side speaker on/off selection signal output terminal “L”: speaker on
36
CD ON
I/O
At initial mode: Setting terminal for the test mode (auto mode) “L”: auto mode
At normal mode: Power on/off control signal output for the CD +5V power supply
“L”: CD power on
At normal mode: Power on/off control signal output for the CD +5V power supply
“L”: CD power on
37
R-LAT
O
PLL serial data latch pulse signal output to the FM/AM PLL (IC50)
38
AC IN
I
Power failure detection input terminal “L”: power failure, “H”: power on
39
CK
O
At CD mode: Subcode Q data reading clock signal output to the CXD2508AQ (IC502)
At tuner mode: PLL serial data transfer clock signal output to the FM/AM PLL (IC50)
At tuner mode: PLL serial data transfer clock signal output to the FM/AM PLL (IC50)
40
DATA
O
PLL serial data output to the FM/AM PLL (IC50)
41
SQSI
I
Subcode Q data (80 bit serial) input from the CXD2508AQ (IC502)
42
SENS
I
Internal status signal (sense signal) input from the CXD2508AQ (IC502)
43
CIN
I
Track jump count detect signal input from the CXA1782BQ (IC501)
44
SCOR
I
Subcode sync (S0+S1) detection signal input from the CXD2508AQ (IC502)
45
AUTO/MANU
I
Setting terminal for the CD adjustment mode (auto mode/manual mode)
“L”: auto mode, “H”: manual mode (fixed at “L”)
“L”: auto mode, “H”: manual mode (fixed at “L”)
46
DATA
O
Serial data output to the CSV (Computer Sound Voice) processor (IC601)
Used for the US model only Except US model: Not used (open)
Used for the US model only Except US model: Not used (open)
47
CLK
O
Serial data transfer clock signal output to the CSV (Computer Sound Voice) processor (IC601)
Used for the US model only Except US model: Not used (open)
Used for the US model only Except US model: Not used (open)
48
LAT
O
Serial data latch pulse signal output to the CSV (Computer Sound Voice) processor (IC601)
Used for the US model only Except US model: Not used (open)
Used for the US model only Except US model: Not used (open)
49
BUZZER
O
Buzzer sound drive signal output terminal
50
V-RESET
O
Reset signal output to the CSV (Computer Sound Voice) processor (IC601) “L”: reset
Used for the US model only Except US model: Not used (open)
Used for the US model only Except US model: Not used (open)
51
NAR
I
“H” is input when CSV (Computer Sound Voice) processor (IC601) sends data
Used for the US model only Except US model: Not used (open)
Used for the US model only Except US model: Not used (open)
52
V MUTE
O
Voice muting on/off selection signal output terminal “H”: muting on
– 42 –
Pin No.
Pin Name
I/O
Description
53
A MUTE
O
Audio line muting on/off selection signal output terminal “L”: muting on
54
VDD
—
Power supply terminal (+5V)
55
XT1
I
Sub system clock input terminal (32.768 kHz)
56
XT2
O
Sub system clock output terminal (32.768 kHz)
57
IC
—
Internal connection terminal (connected to power supply)
58
X1
I
Main system clock input terminal (4.194MHz)
59
X2
O
Main system clock output terminal (4.194MHz)
60
SHIFT CK
O
Shift clock output of the main system clock (4.194 MHz) “H” active
61
BUSY/COLOR
I/O
US model: Busy status monitor input from the CSV (Computer Sound Voice) processor (IC601)
“L”: busy status
Except US model: LCD back light color selection signal output terminal
“L”: amber, “H”: green
“L”: busy status
Except US model: LCD back light color selection signal output terminal
“L”: amber, “H”: green
62
DOOR-IN
I
CD lid open/close detection switch (S424) input terminal “L”: CD lid is closed
63
KEYRET0
I
US model: Key return signal input from the key matrix Talk 1 (sound mode is buzzer) is input
when alarm is turned on
Except US model: Key return signal input from the key matrix
when alarm is turned on
Except US model: Key return signal input from the key matrix
64
KEYRET1
I
US model: Key return signal input from the key matrix Talk 2 (sound mode is bird) is input
when alarm is turned on
Except US model: Key return signal input from the key matrix
when alarm is turned on
Except US model: Key return signal input from the key matrix
65
KEYRET2
I
US model: Key return signal input from the key matrix Talk 3 (sound mode is river) is input
when alarm is turned on
Except US model: Key return signal input from the key matrix
when alarm is turned on
Except US model: Key return signal input from the key matrix
66, 67
KEYRET3,
KEYRET4
I
Key return signal input from the key matrix
68
RESET
I
System reset signal input from the reset signal generator (IC402) “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”
69
SEG0
O
Segment drive signal output terminal Not used (open)
70 to 80
SEG1 to SEG11
O
Segment drive signal output to the liquid crystal display (LCD401)
– 43 –
(1)
UPPER CABINET SECTION
SECTION 7
EXPLODED VIEWS
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
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
• 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
X-3377-171-1 NET ASSY (DARK BLUE)
1
X-3377-172-1 NET ASSY (RED) (IT)
2
3-034-584-01 BUTTON (OPEN) (DARK GRAY) (US)
2
3-034-584-11 BUTTON (OPEN) (LIGHT GRAY) (CND, IT, AUS)
* 3
1-673-800-11 VOLUME BOARD
4
1-790-755-11 WIRE (FLAT TYPE) (7 CORE)
5
3-034-585-01 KNOB (VOL) (DARK GRAY) (US)
5
3-034-585-11 KNOB (VOL) (LIGHT GRAY) (CND, IT, AUS)
6
3-034-586-01 KNOB (MEGABASS) (DARK GRAY) (US)
6
3-034-586-11 KNOB (MEGABASS) (LIGHT GRAY)
(CND, IT, AUS)
7
X-3377-456-1 CABINET (UPPER) ASSY (DARK GRAY) (US)
7
X-3377-457-1 CABINET (UPPER) ASSY (LIGHT GRAY)
(CND, IT, AUS)
8
3-034-589-01 WINDOW (CD)
9
3-034-579-03 LID, CD (DARK GRAY) (US)
9
3-034-579-13 LID, CD (LIGHT GRAY) (CND, IT, AUS)
10
3-034-592-01 SPRING (CD OPEN)
11
1-452-732-11 MAGNET
12
3-910-112-01 PLATE, CHUCKING
13
1-790-756-11 WIRE (FLAT TYPE) (10 CORE)
* 14
A-3663-291-A KEY BOARD, COMPLETE
15
3-034-581-12 CHASSIS (BUTTON)
16
3-351-377-11 DAMPER
17
3-034-588-01 WINDOW (CLOCK) (for DARK GRAY) (US)
17
3-034-588-11 WINDOW (CLOCK) (for LIGHT GRAY)
(CND, IT, AUS)
18
3-037-757-01 CUSHON (LID)
19
3-039-135-01 SHEET (WINDOW. CD), ADHESIVE
20
3-037-756-02 CUSHION (CHUCK)
21
3-038-420-02 SHIELD (KEY)
SP101
1-529-354-21 SPEAKER (6.6cm) (L ch)
SP201
1-529-354-21 SPEAKER (6.6cm) (R ch)
#1
7-685-546-19 SCREW +BTP 3X8 TYPE2 N-S
#2
7-685-903-31 SCREW +PTPWH 3X10 (TYPE2)
#3
7-685-649-79 SCREW +P 3X14 TYPE2 NON-SLIT
#4
7-685-133-19 SCREW +BTP 2.6X6 TYPE2 N-S
#6
7-685-547-19 SCREW +B 3X10
• Abbreviation
AUS : Australian model
CND : Canadian model
CND : Canadian model
IT: Italian model
SP201
lower cabinet section
SP101
5
6
8
9
10
11
20
13
14
15
16
17
2
3
4
1
12
#4
#3
#3
#3
#3
#6
#6
#1
#1
#2
#3
#3
#3
#1
18
7
19
21
A
A
main board
section
section
Ver 1.3
– 44 –
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
(2)
MAIN BOARD SECTION
* 51
1-673-804-11 MOTOR BOARD
52
3-921-725-01 SCREW (2.6X10), +PWH
53
3-910-095-31 RUBBER, VIBRATION PROOF (GREEN)
54
3-931-379-01 RUBBER, VIBRATION PROOF (RED)
55
3-910-116-01 COVER, CD
56
3-034-580-03 CHASSIS (CD)
* 57
1-673-802-11 PUSH SWITCH BOARD
* 58
1-673-803-11 LED BOARD
59
3-034-587-01 HOLDER (LCD)
* 60
A-3683-082-A MAIN BOARD, COMPLETE (US)
* 60
A-3683-092-A MAIN BOARD, COMPLETE (IT)
* 60
A-3683-095-A MAIN BOARD, COMPLETE (CND)
* 60
A-3683-097-A MAIN BOARD, COMPLETE (AUS)
61
1-769-824-11 WIRE (FLAT TYPE) (16 CORE)
62
3-037-758-01 SHEET (LCD)
63
3-831-441-99 CUSHION, STOPPER
ANT1
1-501-907-21 ANTENNA, FM WIRE
LCD401 1-803-590-11 DISPLAY PANEL, LIQUID CRYSTAL (US)
LCD401 1-803-604-11 DISPLAY PANEL, LIQUID CRYSTAL
LCD401 1-803-604-11 DISPLAY PANEL, LIQUID CRYSTAL
(EXCEPT US)
#3
7-685-649-79 SCREW +P 3X14 TYPE2 NON-SLIT
LCD401
KSM-213BAN
main board
not
supplied
supplied
56
#3
57
58
62
59
61
60
52
54
55
51
52
53
ANT1
63
Ver 1.3
Click on the first or last page to see other ICF-CD873 service manuals if exist.