21
HAR-D1000
SECTION 6
DIAGRAMS
6-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
(In addition to this, the necessary note is printed in each block)
Note on Printed Wiring Board:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
B
These are omitted.
C
E
Q
Note on Schematic Diagram:
• All capacitors are in
µ
F unless otherwise noted. p : pF
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.
•
5
: fusible resistor.
•
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.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
E
: HDD PLAY
j
: HDD REC
J
: CD PLAY
l
: DIGITAL IN
Printed wiring board of BD board is shown only for refer-
ring, because CD base unit is replaced as a block.
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
• Circuit Boards Location
MAIN board
SUB board
POWER board
BD board
LOADING
board
STAND-BY
board
PANEL board
• SUB boards is four-layer pritnted board.
However, the patterns of layer 2 and 3 have not been included in
this diagrams.
*
Replacement of IC101 and IC401 used in this set requires a
special tool.
surface
Lead layout of
conventional IC
CSP (chip size package)
*
Replacement of IC101 and IC401 used in this set requires a
special tool.
• The voltage and waveform of CSP (chip size package) cannot be
measured, because its lead layout is different from that of
conventional IC.
Note:
The components identified
by mark
0
or dotted line
with mark
0
are critical 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.
