19
19
HCD-GX40
SECTION 5
DIAGRAMS
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
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
Note on Printed Wiring Boards:
•
X
: parts extracted from the component side.
•
b
: Pattern from the side which enables seeing.
• Indication of transistor.
Note:
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark : FM
<
> : CD
[
] : TAPE
• 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
: FM
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J
: CD
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
5-1. Circuit Boards Location
• Waveforms
KEY BOARD board
PANEL board
SUB TRANS board
MAIN board
CD board
SENSOR board
TRANS board
VIDEO OUT board
POWER board
DRIVER board
MOTOR board
SPDL board
ADDRESS SENSOR board
REM board
AMPLIFIER
board
5
Q209 Collector
(TAPE REC mode)
2
IC601
qd
(XT2)
1
IC751
rf
(XOUT)
4
IC102
ws
(XOUT)
2 V/DIV, 100 ns/DIV
5 V/DIV, 10 s/DIV
2 V/DIV, 10 s/DIV
2 V/DIV, 20 ns/DIV
3
IC601
qh
(CF2)
2 V/DIV, 40 ns/DIV
5.2 Vp-p
5.6 Vp-p
59 ns
222 ns
30.5 s
4.9 Vp-p
100 ns
5.0 Vp-p
13.5 Vp-p
17 s
Summary of Contents for HCD-GX40 - Electronic Component System
Page 57: ...HCD GX40 MEMO 57 ...
