Sony CMT-DC1K / HCD-DC1K Service Manual ▷ View online
HCD-DC1K
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
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
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
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
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)
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
POWER board
CD board
LOADING board
HCD-DC1K
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
200 mVp-p
• Waveforms
– CD Board –
– 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
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)
5.4 Vp-p
32.768 kHz
HCD-DC1K
20
20
(LIMIT)
28
15
1
14
E
12
13
1
24
40
60
61
80
21
20
41
TP (RF)
(SPINDLE)
M
(SLED)
M
TP
(VC)
1-680-693-
11
(11)
A
MAIN BOARD
CN101
OPTICAL
PICK-UP
BLOCK
(KSM-213D)
CD BOARD
A
B
C
D
1
2
3
4
IC101
C-3
IC102
B-3
IC103
C-2
Q101
B-2
6-5.
PRINTED WIRING BOARD – CD Board –
•
See page 18 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
(Page 27)
HCD-DC1K
21
21
6-6.
SCHEMATIC DIAGRAM – CD Board –
•
See page 19 for Waveforms.
•
See page 33 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
no mark : CD PLAY
∗
: Impossible to measure
(Page 24)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
Click on the first or last page to see other CMT-DC1K / HCD-DC1K service manuals if exist.