Sony CFD-S28L Service Manual ▷ View online
– 49 –
6-12.
IC PIN FUNCTION DESCRIPTION
•
MAIN BOARD IC501 CXP83620-007Q (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
C-SCOR
I
Subcode sync (S0+S1) detection signal input from the CXD2589Q (IC703)
2
RMC
I
Sircs remote control signal input terminal Not used (open)
3, 4
NC
O
Not used (open)
5
C-SENS
I
Internal status signal (sense signal) input from the CXD2589Q (IC703)
6
C-SENS2
I
Internal status signal (sense signal) input from the CXA1992BR (IC701)
7
C-SQCK
O
Subcode Q data reading clock signal output to the CXD2589Q (IC703)
8
C-SQSO
I
Subcode Q data input from the CXD2589Q (IC703)
9
C-RST
O
System reset signal output to the CXA1992BR (IC701) and CXD2589Q (IC703) “L”: reset
10
C-CLOCK
O
Serial data transfer clock signal output to the CXD2589Q (IC703)
11
C-LATCH
O
Serial data latch pulse signal output to the CXD2589Q (IC703)
12
C-DATA
O
Serial data output to the CXD2589Q (IC703)
13
REC
I
Record/playback detection signal input terminal “L”: recording mode, “H”: playback mode
14
R-COUNT
I
PLL serial data input from the FM/AM PLL (IC2)
15
R-DATA
O
PLL serial data output to the FM/AM PLL (IC2)
16
R-CLOCK
O
PLL serial data transfer clock signal output to the FM/AM PLL (IC2)
17
R-LATCH
O
PLL serial data latch pulse signal output to the FM/AM PLL (IC2)
18
V-LATCH
O
Serial data latch pulse signal output to the electrical volume (IC302)
19
V-DATA
O
Serial data output to the electrical volume (IC302)
20
V-CLOCK
O
Serial data transfer clock signal output to the electrical volume (IC302)
21
P-CON
O
Power on/off control signal output to the power supply circuit and power amplifier (IC303 and
IC304) “L”: standby mode, “H”: power on
IC304) “L”: standby mode, “H”: power on
22
NC
O
Not used (open)
23
KEY1
I
Key input terminal (A/D input) S601 to S607 (OPERATE, SLEEP, TIMER, MEGA BASS,
VOLUME +/–, SOUND keys input)
VOLUME +/–, SOUND keys input)
24
KEY2
I
Key input terminal (A/D input)
S609 to S614 (CD
S609 to S614 (CD
·∏, π, TIME SET + + TUNE +, TIME SET – = TUNE –, PLAY
MODE MONO/ST ISS, DISPLAY ENT MEMORY keys input)
25
KEY3
I
Key input terminal (A/D input) S617 to S624 (RADIO BAND, STANDBY, CLOCK, PRESET
+/–, FUNCTION, LOOP AUTO PRESET, FLASH keys input)
+/–, FUNCTION, LOOP AUTO PRESET, FLASH keys input)
26
NC
O
Not used (open)
27
INIT
O
Initial setting signal output terminal Used for the except CIS model
28
MODE CHECK
I
Destination setting terminal
29
SHIFT CLOCK
O
Shift clock output of the main system clock (4.19 MHz) “H” active
30
RST
I
System reset signal input from the reset signal generator (IC503) “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”
31
EXTAL
I
Main system clock input terminal (4.19 MHz)
32
XTAL
O
Main system clock output terminal (4.19 MHz)
33
VSS
—
Ground terminal
34
VL
—
35 to 37
VLC3 to VLC1
—
38 to 41
COM0 to COM3
O
Common drive signal output to the liquid crystal display (LCD501)
42 to 64
SEG0 to SEG22
O
Segment drive signal output to the liquid crystal display (LCD501)
65
NC
O
Not used (open)
66
A-MUTE
O
Audio muting on/off control signal output to the electrical volume (IC302) “H”: muting on
67
B-MUTE
O
Tuner muting on/off control signal output terminal “H”: muting on
68
C-MUTE
O
Digital muting on/off control signal output to the CXD2589Q (IC703) “H”: muting on
Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
– 50 –
Pin No.
Pin Name
I/O
Description
69
TAPE
O
Tape function control signal output to the TA2068N (IC301)
“L”: radio or CD on, “H”: tape on
“L”: radio or CD on, “H”: tape on
70
RADIO
O
Power on/off control signal output for the radio +6V power supply “H”: radio power on
71
CD
O
Power on/off control signal output for the CD +5V power supply “L”: CD power on
72
VDD
—
Power supply terminal (+5V)
73
TX
O
Sub system clock output terminal (32.768 kHz)
74
TEX
I
Sub system clock input terminal (32.768 kHz)
75
NC
O
Not used (open)
76
ISS1
O
ISS 1 on/off control signal output terminal “H”: ISS 1 on
77
ISS2
O
ISS 2 on/off control signal output terminal “H”: ISS 2 on
78
C-DOOR
I
CD lid open/close detection switch (S501) input terminal “L”: CD lid is closed
79
TC-PLAY
I
Tape play detection switch (S303) input terminal “L”: tape play mode
80
REG CHK
I
Regulator check signal input of the AC input or battery input “H” active
– 51 –
(1)
FRONT PANEL SECTION
SECTION 7
EXPLODED VIEWS
The components identified by
mark
mark
! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
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.
• 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
• Abbreviation
AUS : Australian model
CET : East European model
IT
CET : East European model
IT
: Italian model
1
2
3
4
4
4
4
5
6
7
8
9
9
9
10
11
12
SP301
SP302
#1
#8
#1
#8
#1
#8
#1
#1
#1
#1
1
3-032-033-11 WINDOW (LCD)
2
X-3376-911-1 GRILLE ASSY (L), SPK (LIGHT BLUE)
2
X-3376-912-1 GRILLE ASSY (L), SPK (LIME GREEN)
2
X-3376-915-1 GRILLE ASSY (L), SPK (BLACK)
3
X-3376-913-1 GRILLE ASSY (R), SPK (LIGHT BLUE)
3
X-3376-914-1 GRILLE ASSY (R), SPK (LIME GREEN)
3
X-3376-918-1 GRILLE ASSY (R), SPK (BLACK)
4
4-212-330-01 BUSHING
5
X-3376-925-1 CABINET ASSY, FRONT
6
3-032-032-01 BUTTON (MAIN)
* 7
A-3323-168-A CONTROL BOARD, COMPLETE
8
1-790-377-11 WIRE (FLAT TYPE) (6 CORE)
9
4-951-620-11 SCREW (2.6X10), +BVTP
10
3-926-244-91 LID, BATTERY CASE
* 11
1-673-211-11 HEADPHONE BOARD
12
3-921-725-01 SCREW (2.6X10), +PWH
SP301
1-529-185-11 SPEAKER (10cm) (L-CH)
SP302
1-529-185-11 SPEAKER (10cm) (R-CH)
– 52 –
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
(2)
CABINET (REAR) SECTION
The components identified by mark
! or dotted
line with mark
! are critical for safety.
Replace only with part number specified.
#1
#1
#1
#1
#1
#1
#1
#1
T901
not supplied
ANT1
#1
#5
51
52
53
54
55
56
57
58
59
57
61
60
62
62
* 51
A-3321-871-A SECONDARY BOARD, COMPLETE
* 52
1-673-207-11 PRIMARY BOARD
* 53
A-3321-874-A TUNER BOARD, COMPLETE
54
3-032-038-01 TERMINAL, ANTENNA
55
3-032-025-31 CABINET (REAR) (AEP, UK, IT)
55
3-032-025-81 CABINET (REAR) (CET, AUS)
* 56
1-673-209-11 BATTERY BOARD
57
3-028-154-01 TERMINAL (-), BATTERRY
58
3-028-156-01 TERMINAL (S) (-), BATTERRY
* 59
1-673-210-11 BATTERY COMMON BOARD
60
3-032-029-01 HANDLE
61
3-028-157-01 TERMINAL (S) (+.-), BATT
62
4-960-167-01 SCREW (3X8) (DIA. 10), +WH
ANT1
1-501-891-41 ANTENNA, TELESCOPIC (FM)
! T901
1-433-639-11 TRANSFORMER, POWER
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