Table of Contents
Advertisement
SECTION 6
DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
Note on Schematic Diagram:
• 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
/
W or less unless otherwise
4
specified.
•
f
: internal component.
• 5 : fusible resistor.
• C : panel designation.
Note:
The components identified by mark 0 or dot-
ted line with mark 0 are critical for safety.
Replace only with part number specified.
• 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 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
CD board
No mark: CD
BD/MD DIGITAL board
No mark: MD
(
): MD PB
<
>: MD REC
TC board
No mark: REC
(
): PB
Others
No mark: FM
(
): CD
<
>: MD
• 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
J
: CD (ANALOG)
c : CD (DIGITAL)
p : PB (MD)
k : REC (MD)
I : DIGITAL IN (OPTICAL)
d
: PB (TAPE)
a
: REC (TAPE)
• Abbreviation
HK
: Hong Kong model
SP
: Singapore model
KR
: Korea model
AUS : Australian model
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
•
: Pattern from the side which enables seeing.
• Indication of transistor.
C
Q
These are omitted.
B
E
Q
B
C E
These are omitted.
WAVEFORMS
r
– CD BOARD –
– BD BOARD –
1
IC101 ek (RF)
1
1.3Vp-p
2
IC101 ef
(FE)
– MD DIGITAL BOARD –
(Play mode)
1
0.2Vp-p
3
IC101 wh
(TE)
(Play mode)
– TC BOARD –
1.6Vp-p
1
On track jumping
4
IC151 o;
(FS4)
3.5Vp-p
176.4kHz
6-1. CIRCUIT BOARDS LOCATION
TC board
PANEL board
BL board
BD board
JACK board
41
41
IC101 us XTAO
4.0Vp-p
29.5 µ s
VOLT/DIV : 1V AC
TIME/DIV : 20 nsec
IC701 qd XOUT
3.2 Vp-p
100 ns
VOLT/DIV : 1V AC
TIME/DIV : 40 nsec
Q1005 C
16.7Vp-p
1060Hz
VOLT/DIV : 5V AC
TIME/DIV : 2 µ sec
POWER board
AMP board
MAIN board
TUNER unit
MD DIGITAL board
CD board
LOADING board
HCD-M10
Advertisement
Table of Contents
