Sony CMT-NE3 / HCD-NE3 Service Manual ▷ View online
29
HCD-NE3
IC251
BA5947FM
1
LEVEL SHIFT
MUTING
D
15
16
+
–
+
–
D
D
17
18
D
19
20
VREF
21
22
23
24
25
26
27
28
PREVCC
OPOUT
OUTVREF
CH4CAPA
CH4IN
CH3FIN
CH3RIN
GND
MUTE
POWVCC
CH3OUTF
CH3OUTR
CH4OUTF
CH4OUTR
OPIN
–
2
OPIN+
INTERFACE
14
13
D
12
11
D
10
9
8
7
6
CH2FIN
CH2RIN
GND
5
4
CH1FIN
CH1RIN
VREFIN
POWVCC
CH2OUTR
CH2OUTF
CH1OUTR
CH1OUTF
INTERFACE
D
D
3
SW
INTERFACE
– MAIN Board –
IC302
BD3881FV
28
REC1O
27
REC1N
26
REC2N
25
REC2O
24
INC2
23
INC1
22
INB2
21
INB1
20
INA2
19
INA1
18
OUT1
17
BAS1
16
OUT2
15
BAS2
BASS
BASS
13
CONT
14
VEE
12
VDD
11
TRE2
10
TRE1
TREBLE
TREBLE
7
VOLIN1
8
VOLIN2
9
GND
VOLUME
VOLUME
6
PB1O
LOGIC
CONTROL
5
PB2O
4
PB2N
1
PB1N
2
PB1P
3
PB2P
30
HCD-NE3
•
IC Pin Function Description
CONTROL BOARD IC801 LC877456C-53K5-E (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
PWR ON
O
Power relay drive signal output terminal “H”: on
2
CD ON
O
Power on/off control signal output for the CD mechanism section
3
CD XTXCN
O
Oscillation circuit control signal output to the CD DSP
“H”: auto oscillation, “L”: oscillation off
“H”: auto oscillation, “L”: oscillation off
4
CD OPEN
I
CD lid open/close detection switch input terminal
5
CD XRST
O
Reset signal output to the CD DSP
6
CD DATA
O
Serial data output to the CD DSP
7
CD SENS
I
Internal status (SENSE) signal input from the CD DSP
8
CD CLK
O
Serial data transfer clock signal output to the CD DSP
9
CD XLT
O
Serial data latch pulse output to the CD DSP
10
NC
—
Not used
11
RESET
I
Reset signal input from the reset switch “L”: reset For several hundreds msec. after the power
supply rises, “L” is input, then it changes to “H”
supply rises, “L” is input, then it changes to “H”
12
XT1
I
Sub system clock input terminal (32.768 kHz)
13
XT2
O
Sub system clock output terminal (32.768 kHz)
14
VSS1
—
Ground terminal
15
CF1
I
Main system clock input terminal (10 MHz)
16
CF2
O
Main system clock output terminal (10 MHz)
17
VDD1
—
Power supply terminal (+3.2V)
18
I POWER
MONITOR
I
Power monitor input terminal
19, 20
NC
—
Not used
21
AREA
I
Model destination setting terminal
22
VOL ENCODER
I
Dial pulse input of the rotary encoder (for VOLUME control)
23
I POWER DOWN
I
Power down detection signal input terminal “L”: power down, normally : “H”
24
TA-SW
I
Cassette in/out detect switch signal input from the tape mechanism deck “L”: cassette in
25, 26
KEY1, KEY0
I
Front panel key input terminal (A/D input)
27
CD SCOR
I
Subcode sync (S0+S1) detection signal input from the CD DSP
28
F DATA
O
Serial data output to the electrical volume
29
RMC
I
Remote control signal input from the remote control receiver
30
TU DI
I
Serial data input from the FM/AM tuner unit
31
NC
—
Not used
32
TU DO
O
Serial data output to the FM/AM tuner unit
33
TU MUTE
O
Tuner muting on/off control signal output to the FM/AM tuner unit
34
TU CLK
O
serial data transfer clock signal output to the FM/AM tuner unit
35
TU CE
O
Chip enable signal output to the FM/AM tuner unit
36
TU TUNED
I
Tuning detection signal input from the FM/AM tuner unit
37
TU STEREO
I
FM stereo detection signal input from the FM/AM tuner unit
38
NC
—
Not used
39
ST/BY
O
LED drive signal output terminal
40
MD LED
O
LED drive signal output terminal
31
HCD-NE3
Pin No.
Pin Name
I/O
Description
41
TA LED
O
LED drive signal output terminal
42
TU LED
O
LED drive signal output terminal
43
CD LED
O
LED drive signal output terminal
44
NC
—
Not used
45 to 53 SEG33 to SEG25
O
Segment drive signal output to the fluorescent indicator tube
54
VDD2
—
Power supply terminal (+3.1V)
55
VSS2
—
Ground terminal
56 to 79
SEG24 to SEG1
O
Segment drive signal output to the fluorescent indicator tube
80
BIAS3
I
Power supply output for the liquid crystal display bias
81
LCD BIAS2
I
Power supply output for the liquid crystal display bias
82
LCD BIAS1
I
Power supply output for the liquid crystal display bias
83 to 86
LCD COM0 to
LCD COM3
O
Common drive signal output to the liquid crystal display (D621)
87, 88
NC
—
Not used
89
VSS3
—
Ground terminal
90
VDD3
—
Power supply terminal (+3.1V)
91
TA PLAY SW
I
PLAY switch signal input from the tape mechanism deck
92
TA END SW
I
END switch signal input from the tape mechanism deck
93
TA MOTOR
O
Capstan/reel motor on/off control signal output terminal “H”: motor on
94
TA REC/PLAY
O
Recording/playback selection signal output terminal “H”: playback mode, “L”: recording mode
95
TA BIAS
O
Recording bias on/off selection signal output terminal “H”: bias on, “L”: bias off
96
TA SOL
O
Trigger plunger on/off control signal output terminal “H”: plunger on
97
BACK LIGHT ON
O
LED drive signal output terminal for the LCD back light
98
AMP STBY
O
Standby control signal output to the power amplifier
99
AMP MUTE
O
Tuner muting on/off control signal output to the power amplifier
100
AU MUTE
O
Line muting on/off control signal output terminal Not used
HCD-NE3
32
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.
• 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
A-1055-614-A POWER BOARD, COMLETE (E, E51, SP)
1
A-1056-003-A POWER BOARD, COMLETE (AR, AUS)
1
A-1056-266-A POWER BOARD, COMLETE (MX, TW)
1
A-1056-495-A POWER BOARD, COMLETE (EA)
1
A-1056-526-A POWER BOARD, COMLETE (KR)
1
A-4750-273-A POWER BOARD, COMLETE (AEP, UK)
1
A-4751-335-A POWER BOARD, COMLETE (US, CND)
2
A-4750-277-A AMP BOARD, COMPLETE
3
A-4750-275-A MAIN BOARD, COMPLETE
4
3-703-244-00 BUSHING (2104), CORD
0 5
1-775-790-12 CORD, POWER (AUS)
0 5
1-769-079-23 CORD, POWER (KR)
0 5
1-769-744-52 CORD, POWER (AEP, UK, E51, SP)
0 5
1-696-570-21 CORD, POWER (EA)
0 5
1-783-531-22 CORD, POWER (US, CND)
0 5
1-829-387-11 CORD, POWER (AR)
0 5
1-827-226-11 CORD, POWER (E, MX)
0 5
1-827-597-31 CORD, POWER (TW)
6
1-693-625-11 TUNER (FM/AM) (US, CND)
6
1-693-628-11 TUNER (FM/AM)
(E, E51, EA, MX, SP, TW, AR, AUS)
6
1-693-629-11 TUNER (FM/AM) (AEP, UK, KR)
7
4-246-784-01 FOOT RUBBER
8
4-253-221-01 CABINET, REAR
9
3-701-748-00 CLAMP
10
1-500-386-11 FILTER, CLAMP (FERRITE CORE)
0 T902
1-443-246-11 TRANSFORMER, POWER
(E, E51, MX, SP, TW, AR, AUS)
0 T902
1-443-245-11 TRANSFORMER, POWER (AEP, UK)
0 T902
1-443-244-11 TRANSFORMER, POWER (US, CND)
0 T902
1-443-396-11 TRANSFORMER, POWER (EA)
0 T902
1-443-397-11 TRANSFORMER, POWER (KR)
#1
7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S
#8
7-685-646-79 SCREW +BVTP 3X8 TYPE2 N-S
#5
7-685-661-14 SCREW +BVTP 4X12 TYPE2 N-S
5
1
9
10
2
4
7
8
not supplied
not supplied
(REG board) (2/2)
(REG board) (2/2)
not supplied
(REG board) (1/2)
(REG board) (1/2)
T902
not supplied
not supplied
top panel assy
front panel assy-1
#1
#1
#8
#8
#8
#8
#8
#1
#1
#5
#1
#1
#1
#8
#1
#1
#1
3
6
• Abbreviation
AR
: Argentina model
AUS
: Australian model
CND
: Canadian model
7-1. PANEL SECTION
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.
E51
: Chilean and Peruvian model
EA
: Saudi Arabia model
KR
: Korea model
MX
: Mexican model
SP
: Singapore model
TW
: Taiwan model
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