Read Sony CMT-C7NT / HCD-C7NT Service Manual online
48
48
HCD-C7NT
6-4. Block Diagram – Main Section –
: FM
: CD
• Signal Path
• R-CH is omitted due to same as L-CH.
: PB(MD)
: REC(MD)
: PB(TAPE)
: REC(TAPE)
: DIGITAL IN
: USB
TUNER PACK
TC
DAOUT-L
REC-L
38
IC301
SOUND PROCESSOR
35
REC
25
OUT
L-CH
R-CH
CL
DO
DI
CE
TUNED
STEREO
MUTE
R-CH
IC501 (2/2)
MASTER CONTROL
IC601
FL DRIVER
FL601
FLUORESCENT
INDICATOR TUBE
52
PRE-MUTE
56
SPK-RELAY
AC-CUT
RESET 34
CD/MD
37
ST
39
LAT
CLK
DATA
22 21
Q341
MUTING
Q331
MUTING
MUTING
SWITCH
SWITCH
Q202
H/P
DETECT
Q232
Q991
RELAY
DRIVER
RESET
SWITCH
Q941
VOL-DATA
VOL-CLK
VOL-CE
64
63
PLL-CLK
PLL-DI(ST UCOM)
PLL-DO(UCOM ST)
PLL-CE
TUNED
STEREO
ST-MUTE
43
45
44
46
49
48
47
50
96
+
–
5
IC302
HEADPHONE AMP
6
7
R-CH
J103
PWR-RELAY
PHONES
SPEAKER
IN
OUT
TAPE
REC-MUTE
54
91
D982-985
D851
-30V
REG
B+
SWITCH
Q911,912
CD+5V
D971-974
D981
CD+10V
ST+10V
T900
MAIN
TRANSFORMER
T901
SUB
TRANSFORMER
+B
-B
+10V
REG
IC901
3
1
B
AC IN
R-CH
J102
J101
3
1
IC941
AC-DET
D942
RESET
USB
SECTION
D
USB
SECTION
C
F
PDOWN
USB
SECTION
D961-964
+5V
REG
IC905
3
1
+5.6V
REG
IC907
3
2
1
MD H/M+5V
CDM+5V
+7V
REG
IC903
3
1
CD+7V
PRE+7V
+5V
REG
IC902
3
1
MDM+5V
FL -30V
VF
VF
VF
VF
+4V
REG
IC906
RY991
3
1
MD-PWR
D992
D993
D921
D941
R941
C941
D926
D927
D925
D923
D924
69
FAN-HIGH 66
BDPWR 28
PCPON
70
92
R-CH
R-CH
EXT-ON
EXT-ON
Q971
+5V
REG
IC904
3
1
Q311
D343
26
B-O
27
B-I
28
V-O
DBFB
SWITCH
Q102
SWITCH
Q601
SWITCH
Q602
SWITCH
62
20
+5V
REG
IC908
3
1
LED+5V
A+5V
FAN
DRIVER
Q103
FAN SPEED
DRIVER
Q104,105
(D.C. FAN)
BACKUP
+5V/+2.7V
SYS +5V
SUB +5V
MD D+3.3V
BUP +3.3V
BT921
(RECHARGEABLE)
A-MUTE
A-MUTE
RELAY
AMP-L
35
36
39
38
5
1
4
6
2
16
14
13
15
3
X502
32.768kHz
32.768kHz
X501
20MHz
20MHz
SCL
SDA
57
HELP
XT1
XT2
X1
X2
FL-DATA
FL-CLK
FL-CE
12
DIG0
16G
DIG15
01G
DIG1
ı
DIG14
15G
ı
02G
SEG0
ı
SEG34
P01
ı
P35
61
FL-RST
SDATA
SCK
CS
RST
P1
P OFF
I2C-CLK
I2C-DATA
I2C-DATA, I2C-CLK, I2C-BUSY, PDOWN
MD
SECTION
77
FUNCTION
KEY
S602-605
KEY1
78
FUNCTION
KEY
S606-609
KEY2
79
FUNCTION
KEY
S610-614
KEY3
94
1
IC602
REMOTE
SENSOR
SENSOR
SIRCS
93
KEY-RM
I2C-DATA, I2C-CLK, I2C-BUSY,
PDOWN
I2C-BUSY
SIRCS/
POWERKEY
DETECT
Q221-224
72
Q604
D601
(STANDBY)
D602-610
(KEY BACK LIGHT)
ON/STANDBY
11
ı
1
64
ı
62
•
6
ı
19
21
ı
55
59
ı
33
31
ı
24
•
5
20
3
-B
5
+B
7
8
2
L
CN208
LED
DRIVER
Q605
D611-612
(NET-MD)
(NET-MD)
LED
DRIVER
ANTENA
FM75
Ω
/FM300
Ω
AM
ı
`/1
M901
17 18
Q101
MUTING
RDS DATA
RDS INT
RDS DATA
RDS INT
AEP,UK
AEP,UK
(Page 49)
(Page 49)
(Page 47)
(Page 49)
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