DOWNLOAD Sony CMT-DC1 / HCD-DC1 Service Manual ↓ Size: 4.66 MB | Pages: 51 in PDF or view online for FREE

Model
CMT-DC1 HCD-DC1
Pages
51
Size
4.66 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cmt-dc1-hcd-dc1.pdf
Date

Sony CMT-DC1 / HCD-DC1 Service Manual ▷ View online

HCD-DC1
16
16
6-2.
BLOCK  DIAGRAM  – MAIN Section –
TU1
TUNER PACK
FM75
FM75
ANENNA
L
R
AM
1
2
4
9
Q810
8
Q809
10
Q811
7
3
Q813
Q809 – 811, 813
TUNER ON/OFF
SWITCH
31
30
17
3
LINE
OUT2
VOL2
OUT2
TREBLE
LOGIC
MIDDLE
BASS
INPUT SELECT SWITCH,
MIX, TONE CONTROL,
ELECTRICAL VOLUME
IC323
4
13
14
2
DET AMP
Q812
16
12
2
X803
4.332MHz
RDS DECODER
IC804
D806
17
14
15
88
28
5
8
19
18
25
AUDIO IN
MD (VIDEO)
SJ302
HRPE901
(RECORD/PLAYBACK/ERASE)
R-CH
(ERASE)
R-CH
L-CH
1
3
2
REC/PB SWITCHING
IC402
REC/PB AMP, EQ AMP
IC401
(REC)
(PB)
(SW)
R-CH
R-CH
4
23
24
20
R-CH
R-CH
ALC
16
14
REC OUT L
PB L
REC
IN L
B+
(+8V)
BIAS
OSC
T401
REC BIAS SWITCH
Q402, 403
BIAS OSC
Q401
BIAS 
TRAP
T403
CD L IN
DATA
CLK
LATCH
SENS
SQSO
SQCK
XRST
HOLD
C SCOR
DATA
CLK
SDA
SCK
95
11 86 14 100
Q801
LED DRIVE
Q854
A
(Page 15)
MUTING
Q100
R-CH
B+ (+8V)
MUTING DRIVE
Q330
4
10
9
14
+
+
SJ301
L
R
SPEAKER
IMPEADANCE
USE 6 – 16
R-CH
R-CH
J301
HEADPHONE AMP
IC324
MUTING
Q815, 817
MUTING DRIVE
Q312, 313
MOS GAIN &
LEVEL SHIFT
ING STAGE
MOS
OUTPUT
STAGE
SHORT
CIRCUIT
PROTECTION
D853
IN+
IN–
STANDBY/MUTE
MUTE
STBY
B
(Page 17)
REG CON
D
(Page 17)
REC/PB
C
(Page 17)
FM ON
POWER AMP
IC201
R-CH
97
22
24
93
92
X802
32.768KHz
39
4
40
X801
4.19MHz
CAPSTAN/REEL
MOTOR DRIVE
Q601, 602
10
1
6
32
13
15
TRIGGER
PLUNGER DRIVE
Q603, 604
M
M
TAPE END DETECT
SENSOR
(TAPE DECK BLOCK)
6
5
10
2
33
M901
(LOADING)
M
M
LOADING
MOTOR DRIVE
IC320
• SIGNAL PATH
: TUNER
: CD PLAY (ANALOG OUT)
: CD PLAY (OPTICAL OUT)
: TAPE (PLAY)
: TAPE (RECORD)
: MD
OUT
FM ANT
ANT GND
AM ANT
ANT GND
L-CH
R-CH
R-CH
TUNED
DI
CK
CE
DO
FM DET
MIX
X1
X0
RDATA
RCLK
R-CH
B IN L
A IN L
6
2
8
10
INPUT2
INPUT1
OUT2
OUT1
SYSTEM CONTROLLER
IC801 (1/2)
C2
A2
D2
E2
C-SQSO/
RDS-DATA
RDS-IN
TUNED
C-DATA/TU-DATA
C-CLK/TU-CLK
C-LATCH/TU-CE
SENS2/TU-COUNT
TU-ON
REC/PB
 C-SQCK
C-XRST/FM-ON
 HOLD
C-SCOR
AU-MUTE
AMP-MUTE
H/P CHECK
TEX
TX
EXTAL1
MOT-CON
XTAL1
SOL-CON
TAPE-END
T-MODE
TC-SW
TRAY-OPEN
TRAY-CLOSE
TRAY-SW
PHONES
SI
DISC TRAY
OPEN/CLOSE DETECT
• R-CH : R-ch is omitted due to same as L-ch.
• Abbreviation
  CND: Canadian model
  MX  : Mexican model
MUTING
Q414
87 REC-MUTE
96 L-MUTE
R-CH
R-CH
LINE
AMP
MUTING
Q407
TUNER
/BAND
(EXCEPT US, CND, MX)
(US, CND, MX)
Ver 1.1
HCD-DC1
17
17
6-3.
BLOCK  DIAGRAM  – DISPLAY/POWER  SUPPLY Section –
ROTARY
ENCODER
RV801
VOLUME
RV801
JOG A
JOG B
21
20
36 
 34
KEY1 
 3
S801 – 816
50 
 53
COM0 
 3
LIQUID CRYSTAL
DISPLAY
LCD801
54 
 85
SEG0 
 31
REMOCON
3
REMOTE CONTROL
RECEIVER
IC802
LED DRIVE
Q855
DSG
D854
CD SYNC
D856
LED DRIVE
Q856
CD SYNC
26
27
89
38
99
VDD
RESET
WP
RESET SIGNAL
GENERATOR
IC803
+5V
(ROTARY ENCODER)
D812
D811
B+ SWITCH
Q606, 607
Q605
B+ SWITCH
Q608, 609
CASSETTE HOLDER
BACK LIGHT
D802
D
REC/PB
(Page 16)
SYSTEM CONTROLLER
IC801 (2/2)
LED DRIVE
Q853
Y
D855
TC ON 98
94
CD ON
LED DRIVE
Q852
u
D852
CD +5V
REGULATOR
Q306
B+
(CD +5V)
+10V
REGULATOR
Q305
CD +8V
REGULATOR
IC306
B+
(CD +8V)
B+
(FM +7.5V)
+9V
REGULATOR
Q301
FM +7.5V
REGULATOR
Q302
B+
(+9.5V)
B+
(COM +12V)
7
REG CON
(Page 16)
FM ON
C
RECT
D906 – 909
RECT
D902 – 905
COM +8V
REGULATOR
IC304
COM +12V
REGULATOR
Q355
B+
(COM +8V)
LED B+
SWITCH
Q661, 662
LED B+
(+8V)
B+
(+14V)
B –
( – 14V)
B+
(+22.5V)
B –
( – 22.5V)
POWER AMP
(IC101, 201)
COM  – 8V
REGULATOR
IC302
B –
( COM  – 8V)
REG CON
C
(Page 16)
B
D917
D310
B+ SWITCH
Q608, 609
B+ SWITCH
Q901
RECT
D910 – 913
RELAY +5V
REGULATOR
IC301
WAKE UP
SWITCH
Q890, 891
D801
D  S  G
D866 – 869
(LCD BACK LIGHT)
37
SIMUKE/TEST
B+ (+5V)
REGULATOR
CONTROL
SWITCH
Q303, 304
REGULATOR
CONTROL
SWITCH
Q307, 308
B+
(+5V, RELAY +5V)
(TAPE)
(CD)
T902
MAIN
TRANSFORMER
RELAY
DRIVE
Q902
RY901
AC IN
T901
SUB
TRANSFORMER
F905
-2
-1
VOLTAGE
SELECTOR
S901
220 – 240V
110 – 120V
F902
F901
(HK, MY, SP)
(HK, MY, SP)
(EXCEPT HK, MY, SP)
(HK, MY, SP)
(HK, MY, SP)
(AEP, UK)
(EXCEPT US, CND, MX)
(EXCEPT US, CND, MX)
(EXCEPT US, CND, MX)
(US, CND, MX)
LF901
US, CND
MX
• Abbreviation
  CND: Canadian model
  HK : Hong Kong model
  MX : Mexican model
  MY : Malaysia model
  SP : Singapore model
   
Ver 1.1
HCD-DC1
18
18
6-4.
NOTE  FOR  PRINTED  WIRING  BOARDS  AND  SCHEMATIC  DIAGRAMS
Note on Printed Wiring Boards:
X
: parts extracted from the component side.
Y
: parts extracted from the conductor side.
W
: indicates side identified with part number.
: Pattern from the side which enables seeing.
• Indication of transistor.
Note on Schematic Diagram:
• All capacitors are in 
µ
F unless otherwise noted.  pF: 
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
f
: internal component.
C
: panel designation.
A
: B+ Line.
B
: B– Line.
H
: adjustment for repair.
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: TUNER
E
: TAPE PLAY (DECK A)
d
: TAPE PLAY (DECK B)
G
: TAPE REC
J
: CD PLAY (ANALOG)
c
: CD PLAY (DIGITAL)
• Abbreviation
CND : Canadian model
HK
: Hong Kong model
MX
: Mexican model
MY
: Malaysia model
SP
: Singapore model
Note: The components identified by mark 
0
 or dotted line
with mark 
0
 are critical for safety.
Replace only with part number specified.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
B
These are omitted.
C
E
Q
• Circuit Boards Location
TC board
LCD board
I/O SWITCH board
SWITCH board
HEADPHONE board
MAIN board
TUNER UNIT
• Abbreviation
CND : Canadian model
HK
: Hong Kong model
MX
: Mexican model
MY
: Malaysia model
SP
: Singapore model
Ver 1.1
POWER board
CD board
LOADING board
HCD-DC1
19
19
5.4 Vp-p
4.19 MHz
51.2 Vp-p
12 
µ
s
44 Vp-p
11.9 
µ
s
6
IC101 
w;
 (SCOR) (CD Play Mode)
Approx.
200 mVp-p
• Waveforms
– CD Board –
1
IC103 
qh
 (RFO) (CD Play Mode)
2
IC103 
qf
 (FE) (CD Play Mode)
3
IC103 
qd
 (TE) (CD Play Mode)
4
IC101 
qg
 (WFCK)
5
IC101 
qj
 (XPCK)
7
IC101 
yh
 (XTAI)
2
REC/PB (REC Mode)
1.2 
±
0.1 Vp-p
Approx.
380 mVp-p
5.1 Vp-p
136 
µ
s
5.9 Vp-p
230 ns
13.2 ms
5 V
3 Vp-p
16.9344 MHz
– TC Board –
1
ERASE Head (REC Mode)
– MAIN Board –
1
IC801 
el
 (EXTAL1)
2
IC801 
os
 (TX)
4
IC804 
qh
 (RCLK) (FM Mode)
3
IC804 
qd
 (XI) (FM Mode)
5.4 Vp-p
32.768 kHz
5 Vp-p
840 
µ
s
2.4 Vp-p
4.332 MHz
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