Sony CFD-E75L Service Manual ▷ View online
37
CFD-E75L
IC2
LC72137M-TLM
– TC Board –
IC301
TA2068N
11
10
9
8
7
6
5
4
3
2
1
12
13
14
15
16
19
20
UNLOCK
DETECTOR
POWER ON
RESET
UNIVERSAL
COUNTER
CCB
I/F
CE
DI
CL
DO
XOUT
AOUT
XIN
AIN
PD
VSS
VDD
B04
FMIN
AMIN
B01
B02
B03
I01
I02
IFIN
PHASE
DETECTOR
CHARGE
PUMP
REFERENCE
DIVIDER
SWALLOW
COUNTER
1/16,1/17
4BITS
12BITS
PROGRAMMABLE
DIVIDER
DATA SHIFT REGISTER
LATCH
1/2
17
18
1
2
3
6
9
10
11
12
8
7
4
5
22
TAPE
TAPE
TAPE
BUF AMP
A1
BUF AMP
A2
NAB
AMP1
NAB
AMP2
23
24
15
14
13
21
20
17
16
RADIO
BUF AMP
B1
BUF AMP
B2
MUTE
MUTE
ON
ON
ON
7dB
26dB
26dB
MONITOR
AMP
LOGIC
18
19
MUTE
7dB
MONITOR
AMP
LINE
TAPE
RADIO
LINE
ALC2
ALC1
DET
REC
AMP1
REC
AMP2
2.1
REF
AMP
MIC
AMP1
LINE
IN1
IN1
INT
EXT
RADIO
IN1
EXT
RADIO
IN1
REC
PLAY
PLAY
PRE
OUT1
OUT1
PRE
OUT2
OUT2
RADIO
LINE
LINE
RADIO
IN2
IN2
LINE
IN2
IN2
MIC
IN
IN
TAPE
TAPE
TAPE
VCC
ALC
NAB
OUT1
NAB
NF1
REC
OUT1
NAB
IN1
VREF
GND
NAB
IN2
REC
OUT2
NAB
NF2
NAB
OUT2
MIC
NF
38
CFD-E75L
•
MAIN BOARD IC801 CXP83624-027Q (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
CD-WRQ
I
Interruption detection signal input from the LC78645NE (IC701)
2
RMC
I
Sircs remote control signal input from the remote control receiver (IC804)
3
BUZZER
O
Buzzer sound signal output
4
N.C
O
Not used (open)
5
CD-RES
O
System reset signal output to the LC78645NE (IC701) “L”: reset
6
CD CE
O
Chip enable signal output to the LC78645NE (IC701)
7
CD CL
O
Serial data transfer clock signal output to the LC78645NE (IC701)
8
CD DO
I
Serial data input from the LC78645NE (IC701)
9
CD DI
O
Serial data output to the LC78645NE (IC701)
10
CD DRF
I
Focus on/off detection signal input from the LC78645NE (IC701)
11
CD FSEQ
I
Synchronizing signal detection signal input from the LC78645NE (IC701)
12
V-DATA
O
Serial data output to the electrical volume (IC320)
13
V-CLOCK
O
Serial data transfer clock signal output to the electrical volume (IC320)
14
N.C
O
Not used (open)
15
MEGABASS
I
Megabass on/off control signal output “L”: megabass on
16
A-MUTE
O
Audio muting on/off control signal output to the electrical volume (IC320) “H”: muting on
17
N.C
O
Not used (open)
18
CD
O
Power on/off control signal output for the CD +5V power supply, and CD function control signal
output to the TA2068N (IC301) “H”: CD power on (CD on)
output to the TA2068N (IC301) “H”: CD power on (CD on)
19
P-CON
O
Power on/off control signal output to the power supply circuit, and power amplifier (IC390)
“L”: standby mode, “H”: power on
“L”: standby mode, “H”: power on
20
CD DOOR
I
CD lid open/close detection switch (S901) input terminal “H”: CD lid is closed
21
REG CHK
I
Regulator check signal input of the AC input or battery input “H” active
22
N.C
O
Not used (open)
23
KEY-1
I
Key input terminal (A/D input) S401 to S406 (OPERATE, STANDBY, RADIO BAND AUTO
PRESET, TUNE m –, TUNE M +, DSPL ENT MEM) keys input
PRESET, TUNE m –, TUNE M +, DSPL ENT MEM) keys input
24
KEY-2
I
Key input terminal (A/D input) S407 to S413 (MENU ALARM, x, u, VOLUME –,
VOLUME +, MEGA BASS, MODE) keys input
VOLUME +, MEGA BASS, MODE) keys input
25
JOG-B
I
Jog dial pulse input from the rotary encoder (RE401 JOG DIAL) (B phase input)
26
JOG-A
I
Jog dial pulseinput from the rotary encoder (RE401 JOG DIAL) (A phase input)
27
SIMUKE CHECK
I
Destination setting terminal
28
INIT
O
Initial setting signal output
29
SHIFT CLK
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 (IC843) “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
O
Liquid crystal display drive bias control signal output terminal
35 to 37
VLC3 to VLC1
—
Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
38 to 41
COM0 to COM3
O
Common drive signal output to the liquid crystal display (LCD801)
42 to 61
SEG0 to SEG19
O
Segment drive signal output to the liquid crystal display (LCD801)
62 to 64
N.C
O
Not used (open)
65
RADIO
O
Power on/off control signal output for the radio +6V power supply “H”: radio power on
66
TU-CE
O
PLL chip enable signal output to the FM/AM PLL (IC2)
6-18.
IC PIN FUNCTION DESCRIPTION
39
CFD-E75L
Pin No.
Pin Name
I/O
Description
67
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
68
TU-DATA
O
PLL serial data output to the FM/AM PLL (IC2)
69
TU-CLK
O
PLL serial data transfer clock signal output to the FM/AM PLL (IC2)
70
TU-MUTE
O
Tuner muting on/off control signal output to the FM/AM PLL (IC2) “H”: muting on
71
BEEP-H/L
O
Beep level H/L control signal output “L”: low, “H”: high
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
ISS-1
O
ISS 1 on/off control signal output “H”: ISS 1 on
77
ISS-2
O
ISS 2 on/off control signal output “H”: ISS 2 on
78
TU-COUNT
I
PLL serial count data input from the FM/AM PLL (IC2)
79
TC-REC
I
Record/playback detection signal input “L”: playback mode, “H”: recording mode
80
TC-PLAY
I
Tape play detection switch (S304) input terminal “L”: tape play mode
40
CFD-E75L
7-1.
CABINET 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
1
3-229-988-01 KNOB (REC)
2
3-229-987-01 KNOB (PLAY)
3
3-229-985-01 KNOB (REW)
4
3-229-986-01 KNOB (FF)
5
3-229-984-01 KNOB (STOP/EJECT)
6
3-230-316-01 KNOB (PAUSE)
7
3-019-395-01 PLATE, CHUCKING
8
1-452-899-11 MAGNET
9
3-234-540-01 CD LID (WHITE)...(WHITE)
9
3-234-540-11 CD LID (BLUE)...(BLUE)
9
3-234-540-21 CD LID (ORANGE)...(ORANGE)
10
3-229-996-31 HANDLE (WHITE)...(WHITE)
10
3-229-996-41 HANDLE (BLUE)...(BLUE)
10
3-229-996-51 HANDLE (ORANGE)...(ORANGE)
10
9
#4
CABINET FRONT SECTION
CABINET UPPER SECTION
CABINET LOWER SECTION
#1
#2
#2
#1
#1
#2
#3
8
7
6
5
4
3
2
1
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.
• Abbreviation
EE
: East European model
Click on the first or last page to see other CFD-E75L service manuals if exist.