Sony CMT-NEZ7DAB / HCD-NEZ7 Service Manual ▷ View online
HCD-NEZ7
21
21
HCD-NEZ7
7-7. SCHEMATIC DIAGRAM – SELECTOR Board –
•
See page 30 for IC Block Diagrams.
R721
R722
CN719
CN720
CN718
C721
C722
R724
R723
C719
R732
R731
IC721
Q721
Q722
10k
10k
15P
15P
5P
0.1
0.1
10k
10k
100
16V
16V
10k
10k
TC4052BF
KRC102M-AT
KRC102M-AT
1
2
3
4
15
15
14
14
11
11
7
7
6
6
1
2
3
4
INH
VEE
GND
VCC
Y0
Y2
Y
Y3
Y1
B
A
X3
X0
X
X1
X2
ST CLK
ST DOUT
ST DIN
ST CE
TUNED
STEREO
L OUT
AGND
R OUT
ST MUTE
RDS+3.3V
RDS INT
RDS DATA
+9V
NC
ST CLK
ST DOUT
ST DIN
ST CE
TUNED
STEREO
L OUT
AGND
R OUT
ST MUTE
RDS+3.3V
RDS INT
RDS DATA
+9V
NC
DAB MUTE
DAB SELECT SW
DAB RCH
DAB LCH
DAB GND
TUNER SELECT
DAB SELECT
SWITCH
DAB MUTING
SWITCH
AM
ANTENNA
COAXIAL
SUPPLIED WITH
THE ASSEMBLED
BLOCK
TUNER UNIT
SWITCH
FM 75
Ω
(Page 29)
(Page 23)
HCD-NEZ7
22
22
HCD-NEZ7
7-8. SCHEMATIC DIAGRAM – MAIN Section (1/2) –
R508
R371
D319
R236
C127
C227
C126
C226
R237
R137
FB317
C219
C119
C501
C523
C524
C505
R504
R509
C512
C511
C514
C513
R503
C503
R505
R506
C507
R502
R501
C353
C352
R370
R369 C516
R507
R518
R521
R517
R358
R376
C351
Q343
D307
D320
R389
D305
R325
C335
C329
C308
FB305
C307
FB304
C328
C326
C322
C306
FB303
C310
C311
C315
C316
C317
C318
C319
C320
C321
C325
C327
C138
Q300
CN321
R387
R388
R377
R379
R381
R383
R378
R380
R382
R384
C363
R390
D321
C238
R304
CN318
CN500
C309
IC501
C506
Q301
D325
C121
C221
L101
L201
JW229
JW230
J321
M301
R318
R329
R328
C324
R330
R331
R511
R512
C364
CN317
FB307
C370
Q316
CN313
R515
R516
Q342
R326
D324
D326
FB306
C330
D323
R321
Q320
R524
R523
D313
CN314
R315
D310
Q314
R313
R314
Q312
R136
C334
Q317
R514
R385
R386
Q321
C323
J302
C333
C331
C332
470
10k
MC2840-T112-1
10k
470p
470p
220p
220p
4.7k
4.7k
0.01
0.01
100p
470p
470p
100p
47k
47k
0.22
0.22
50V
0.22
0.22
50V
470
47 25V
47k
1k
0.1
47k
1k
2200
35V
2200
35V
10k
10k
100
16V
16V
10k
47k
10k
47k
47k
100k
100
25V
25V
2SC3052EF
MC2836
MC2840-T112-1
10k
1N4002B
4.7k
2200
10V
4.7
50V
470
10V
10V
470
10V
100p
100p
100p
470
10V
100p
100p
100p
100p
22p
100p
100p
100p
100p
100p
100p
22
50V
RT1P137S
19P
10k
10k
470
470
470
220
470
470
470
220
10 50V
100k
1SS355TE-17
22 50V
4.7k
8P
13P
470
10V
10V
LM1876TF
47
25V
RT1N141C-TP-1
MC2840-T112-1
0.1
0.1
2.2k
100k
10k
4.7
50V
50V
47k
47k
22k
22k
10
50V
27P
0.1
2SC3052EF
3P
2.2
2W
2.2
2W
2SA1235TP-1EF
22k
UDZSTE-174.7B
UDZSTE-174.7B
0
2200p
UDZSTE-174.7B
470
1/2W
2SD2012
100
100
MC2838
5P
22
1N4002B
KTA1273-Y
1k
100k
RT1N141C-TP-1
10k
47
25V
KTA1273-Y
4.7k
1k
1/2W
100
1/2W
2SC3052EF
47
25V
0.1
0.01
0.1
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
CD-L
CD-R
XTCN
XRST
DATA
XLT
CLK
SENS
SCOR
MP3RST
MICS
MILP
MID1O
MICK
MIACK
MP3REQ
XTCN
XRST
DATA
XLT
CLK
SENS
SCOR
MP3REQ
MICK
MILP
MP3STB
MIACK
MID1O
MICS
MP3RST
AMPSTBY
AMPMUTE
MP3STB
LOUT
AGND
ROUT
MP3RST
DOUT
MGND
MP3GND
MILP
MICS
MP3REQ
MIACK
MIDIO
MICK
MP3STB
MP3(3.3V)
DVDD(3.3V)
AVDD(3.3V)
MGND
DGND
XTCN
SCOR
SENS
XLT
DATA
XRST
CLK
M+7V
MP3RST
MICS
MIDIO
MIACK
MP3STB
MP3REQ
MICK
MILP
SCOR
SENS
CLK
XLT
DATA
XRST
XTCN
CDON
DGND
PROTECT
HP-L
HP-L
HP-L
HP-R
HP-R
HP-R
HPGND
SP-L
SP-L
SP-L
SP-R
SP-R
SP-R
AGND
MGND
+UNREG
D+4V
LED+7V
LEDGND
M+10V
A+9V
BDGND
FAN+
GND
FAN+
GND(CT)
-B
GND
+B
(1/2)
(CHASSIS)
(CHASSIS)
(CHASSIS)
(FAN)
Q316,317
FAN MOTOR DRIVE
POWER AMP
Q342,343
DC DETECT
+7V REGULATOR
Q320,321
Q300,301
B+SWITCH
L
R
AUDIO IN
DAB PWR 5V
FAN MOTOR DRIVE
Q312,314
(FOR DAB)
SPEAKER
(Page 19)
(Page 23)
(Page 27)
(Page 23)
(Page 23)
(Page 29)
(Page 29)
HCD-NEZ7
23
23
HCD-NEZ7
7-9. SCHEMATIC DIAGRAM – MAIN Section (2/2) –
•
See page 33 for Waveforms.
•
See page 30 for IC Block Diagrams.
R117
R226
R302
R131
R309
R527
R525
R519
R520
R526
R528
R134
R107
C358
C520
C521
C236
C136
R135
R235 C235
C135
C234
C134
R228
R233
C218
R234
R231
R132
R245
C233
R133
R128
R224
R243
R143
R145
R124
C133
R126
R125
R225
C115
R222
C215
C213
R120
R220
C116
C216
C114
R147
R118
R218
R247
C120
C117
R148
R119
C217
C220
R219
R248
R249
R216
R116
R149
R217
R123
R121
R221
R114
R212
R209
R108
R239
R109
C139
R122
C113
C214
R223
C301
C211
R214
R238
R112
R211
C239
C140
C111
R111
R139
C240
R204
C104
C204
R210
R206
R207
C103
R110
R105
C207
C106
R106
C108
C208
R205
C203
R104
C206
D318
IC302
R103
R203
R320
R208
D302
Q330
Q329
C312
R319
Q328
Q326
Q327
Q331
C313
C304
R310
R201
R100
R101
C101
R368
C361
R367
R366
Q348
C354
R311
R362
C356
R303
C305
CN301
R138
R232
C118
R102
C102
C202
R202
C201
R200
C314
C303
C362
C107
C302
R301
T301
HRPE301
J500
EPT500
WIRE200
Q332
D306
Q344
R312
C355
R533
R531
R529
R534
R532
R530
CN320
CN319
Q347
2.2k
22k
10k
1k
1k
470
470
470
470
470
470
0
100k
0.01
0.01
0.01
10 50V
10 50V
100k
100k
10
50V
10
50V
0.001
0.001
1k
0
47000p
0
1k
1k
0
0.047
0
1k
22k
10k
10k
0
22k
0.047
22k
22k
22k
10
50V
100k
10
50V
0.22
50V
10k
10k
470p
470p
0.47
50V
22k
10k
10k
22k
220p
1000p
2.2k
10k
1000p
220p
10k
2.2k
10k
47k
47k
10k
2.2k
2.2k
2.2k
2.2k
4.7k
22k
4.7k
10k
22k
4.7k
470p
100k
0.22
50V
0.47
50V
2.2k
10p
1000p
4.7k
2.2k
22k
22k
470p
220p
1000p
22k
22k
220p
47
100
10V
10V
100
10V
10V
1k
4.7k
100k
100p
1k
220k
2.2
50V
0.022
4.7k
4700p
4700p
220k
100p
47
0.022
1SS355TE-17
BD3881FV
470
470
4.7k
10k
1SS355TE-17
2SK2158-T2B
2SK2158-T2B
220p
1M
2SK2158-T2B
2SA1235TP-1EF
2SA1235TP-1EF
RT1P241C-TP-1
100
16V
16V
0.0047
4.7k
47k
10k
47k
0.001
10k
47
16V
2.2k
22k
RT1N141C-TP-1
47
16V
4.7
22k
0.001
10k
220
10V
10V
7P
2.2k
1k
47000p
47k
2200p
2200p
47k
0.001
10k
0.01
4700p
10
50V
2.2
50V
220
10V
10V
47k
RT1P241C-TP-1
KTC3205Y-A
4.7
0.022
220
220
220
220
220
220
15P
15P
KTA1266GR-AT
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
STCLK
STCLK
STDOUT
STDOUT
STDIN
STDIN
STCE
STCE
TUNED
TUNED
STEREO
STEREO
STMUTE
STMUTE
RDSINT
RDSINT
RDSDATA
RDSDATA
CD-L
CD-R
AMPSTBY
AMPMUTE
BASS-R
O
UT-R
BASS-L
OUT-L
AUX-L
CD-L
CD-R
RECO-R
R
ECO-L
NF-L
NF-R
AUX-R
HP-L
HPGND
HP-R
SP-L
SP-R
RDS DATA
RDS INT
AMPSTBY
AMPMUTE
TAMUTE
FDATA
REC/PB
BIAS
ST-L
ST-R
TUNED
ST CE
ST CLK
HP-L
HP-L
HP-R
HP-R
SP-L
SP-L
SP-R
SP-R
ST CLK
ST DOUT
ST DIN
ST CE
TUNED
STEREO
L OUT
AGND
R OUT
ST MUTE
RDS+3.3V
RDS INT
RDS DATA
+9V
NC
STEREO
ST MUTE
(2/2)
VEE
CONT
VDD
TRE-R
TRE-L
GND
VOLI-R
VOLI-L
PBO-L
PB0-R
NF-R
TC-R
TC-L
NF-L
DO(ST->UCOM)
DI(ST<-UCOM)
INPUT SELECT,
ELECTRICAL VOLUME
S
S
S
Q326-332
REC/PB SWITCH
1
2
3
4
5
6
BIAS OSC
BIAS OSC
L-CH
R-CH
(REC/PB/ERASE)
ERASE
FFC501
1
13
(CHASSIS)
(CHASSIS)
Q347,348
PHONES
REC BIAS SWITCH
(Page 22)
(Page 27)
(Page 21)
(Page 22)
(Page 22)
HCD-NEZ7
24
24
HCD-NEZ7
•
IC Pin Function Description
PANEL BOARD IC801 M30622MEP-A28FPU0 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
LCD CS
O
Chip select signal output to the liquid crystal display
2
LCD CLK
O
Serial data transfer clock signal output to the liquid crystal display Not used
3
LCD DATA
O
Serial data output to the liquid crystal display Not used
4
SIRCS
I
Remote control signal input from the remote control receiver
5
MP3 DATA OUT
O
Serial data output to the MP3 decoder
6
MP3 DATA IN
I
Serial data input from the MP3 decoder
7
MP3 CLK
O
Serial data transfer clock signal output to the MP3 decoder
8
BYTE (GND)
-
Connected to the ground
9
CNVSS
-
Connected to the ground
10
XCIN
I
Sub system clock input terminal (32.768 kHz)
11
XCOUT
O
Sub system clock output terminal (32.768 kHz)
12
RESET
I
Reset signal input terminal "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"
13
XOUT
O
Main system clock output terminal (16 MHz)
14
VSS
-
Ground terminal
15
XIN
I
Main system clock input terminal (16 MHz)
16
VCC
-
Power supply terminal (+3.3V)
17
NMI (PULL UP)
I
Not used
18
RDS INT
I
RDS serial data transfer clock signal input from the tuner unit
19
CD SCOR
I
Subcode sync (S0+S1) detection signal input from the CD DSP
20
AC CUT
I
Power down detection signal input terminal "L": power down, normally : "H"
21
RDS DATA
I
RDS serial data input from the tuner unit
22
TUNED IN
I
Tuning detection signal input from the tuner unit
23
ST CE
O
Chip enable signal output to the tuner unit
24
ST DATA OUT
O
Serial data output to the tuner unit
25
ST CLK
O
serial data transfer clock signal output to the tuner unit
26
ST DATA IN
I
Serial data input from the tuner unit
27
STEREO IN
I
FM stereo detection signal input from the tuner unit
28
ST MUTE
O
Tuner muting on/off control signal output to the tuner unit
29
IIC CLK
O
Serial data transfer clock signal output to the liquid crystal display
30
LCD DATA
O
Serial data output to the liquid crystal display
31
DAB DATA OUT
O
Serial data output to the DAB tuner module
32
DAB DATA IN
I
Serial data input from the DAB tuner module
33
DAB POWER 3
O
Power on/off control signal output for the DAB tuner (+3.3V) "H": power on
34
DAB POWER 5
O
Power on/off control signal output for the DAB tuner (+5V) "H": power on
35
CD DATA
O
Serial data output to the CD DSP
36
CD SENS
I
Internal status (SENSE) signal input from the CD DSP
37
CD CLK
O
Serial data transfer clock signal output to the CD DSP
38
DAB MUTE
O
DAB tuner muting on/off control signal output terminal
39
DAB SELECT SW
O
DAB tuner/analog tuner (FM/AM) selection signal output terminal
"L": DAB tuner, "H": analog tuner (FM/AM)
"L": DAB tuner, "H": analog tuner (FM/AM)
40
BIAS ON/OFF
O
Recording bias on/off selection signal output terminal "H": bias on
41
HOLD
(PULL DOWN)
I
Not used
42
TC RELAY
O
Recording/playback selection signal output terminal
"L": recording mode, "H": playback mode
"L": recording mode, "H": playback mode
Pin No.
Pin Name
I/O
Description
43
CD XTCN
O
Oscillation circuit control signal output to the CD DSP
"L": oscillation off, "H": auto oscillation
"L": oscillation off, "H": auto oscillation
44
AMP MUTE
O
Muting on/off control signal output to the power amplifier
45
AMP POWER
O
Standby control signal output to the power amplifier
46
XWR (PULL UP)
-
Not used
47
LINE MUTE
-
Line muting on/off control signal output terminal Not used
48
CD POWER
O
Power on/off control signal output for the CD mechanism section "H": power on
49
AMP
CLK/DATA/LT
O
Serial data, serial data transfer clock signal and serial data latch pulse output to the electrical
volume
volume
50
CD XRST
O
Reset signal output to the CD DSP and motor/coil driver "L": reset
51
CD XLT
O
Serial data latch pulse output to the CD DSP
52
BACKLIGHT
O
LED drive signal output terminal for LCD back light "H": LED on
53
MP3 REQ
I
Request signal input from the MP3 decoder
54
MP3 LP
O
Serial data latch pulse output to the MP3 decoder
55
MP3 STBY
O
Standby control signal output to the MP3 decoder "H": standby
56
MP3 ACK
I
Acknowledge signal input from the MP3 decoder
57
MP3 CS
O
Chip select signal output to the MP3 decoder
58
MP3 RESET
O
Reset signal output to the MP3 decoder "L": reset
59
CD O/C SW
I
CD lid open/close detection switch input terminal
"L": CD lid is opened, "H": CD lid is closed
"L": CD lid is opened, "H": CD lid is closed
60
NO USE
-
Not used
61
SOFT TEST
-
Not used
62
VCC
-
Power supply terminal (+3.3V)
63
TC MOTOR
O
Capstan/reel motor on/off control signal output terminal "H": motor on
64
VSS
-
Ground terminal
65
TC PLAY
I
Play switch input from the tape mechanism deck
66
TC TRG
O
Trigger plunger on/off control signal output terminal "H": plunger on
67
STANDBY LED
O
LED drive signal output terminal for STANDBY indicator "H": LED on
68 to 73
NO USE
-
Not used
74
POWER KEY
I
Key interruption processing start signal input terminal
75 to 78
NO USE
-
Not used
79, 80
VOLUME 2,
VOLUME 1
I
Dial pulse input of the rotary encoder (for VOLUME control)
81 to 88
NO USE
-
Not used
89, 90
KEY1, KEY0
I
Front panel key input terminal (A/D input)
91
POWER
MONITOR
I
Power monitor input terminal
92
TC END SW
I
End switch signal input from the tape mechanism deck
93
SPEC IN
I
Model destination setting terminal
94
HAlF REC SW
I
Recording-proof claw (forward/reverse) detect switch and cassette in detect switch input terminal
95
NO USE
-
Not used
96
AVSS
-
Ground terminal
97
STANDBY RELAY
O
Main power on/off relay drive signal output terminal "H": power on
98
VREF
I
Reference voltage (+3.3V) input terminal
99
AVCC
-
Power supply terminal (+3.3V)
100
LCD RST
O
Reset signal output to the liquid crystal display "L": reset
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