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23
23
HCD-GS100
SECTION 7
DIAGRAMS
7-1. Circuit Boards Location
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
2
: nonflammable resistor.
•
1
: fusible resistor.
•
C
: panel designation.
For printed wiring boards.
Note:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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
J
: CD PLAY
c
: CD PLAY (DIGITAL OUT)
E
: TAPE PLAY
G
: REC
q
: VIDEO IN (AUDIO)
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
• Indication of transistor
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
• Waveforms
– CD Board –
– MAIN Board –
– DISPLAY Board –
7
IC801
qd
(XOUT)
1V/DIV, 40ns/DIV
1V/DIV, 20
µ
s
/DIV
6
IC801
qa
(SUBXOUT)
3.5Vp-p
30.6
µ
s
2.6Vp-p
62ns
1V/DIV, 100ns/DIV
8
IC701
id
(X1)
4Vp-p
248ns
MAIN board
AMP board
POWER board
D.SENSOR (OUT) board
T.SENSOR board
D.SENSOR (IN) board
L.T MOTOR board
LOAD SW board
CD LED board
CD board
DISPLAY board
KEY board
HEADPHONE board
1.05Vp-p
1
IC103
qg
(RFAC)
(CD Play Mode)
2
IC101
el
(FE)
(CD Play Mode)
200mV/DIV, 1
µ
s
/DIV
50mV/DIV, 200
µ
s
/DIV
100mV/DIV, 200
µ
s
/DIV
1V/DIV, 20ns/DIV
150mVp-p
160mVp-p
3
IC101
ra
(TE)
(CD Play Mode)
4
IC101
yj
(XTAO)
4.8Vp-p
59ns
Summary of Contents for HCD-GS100 - Mini Hi-fi Component System
Page 17: ...17 HCD GS100 3 19 HEADPHONE Board 1 screw BVTP2 6 8 3 HEADPHONE board 2 decoration panel ...
Page 33: ...33 33 HCD GS100 7 8 Schematic Diagram MAIN Section 1 3 See page 42 for IC Block Diagrams ...
Page 35: ...35 35 HCD GS100 7 10 Schematic Diagram MAIN Section 3 3 HEAD REC PLAY ERASE ...
Page 41: ...41 41 HCD GS100 7 16 Schematic Diagram POWER Section ...