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HCD-MD373
45 45
• Indication of transistor
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.
•
¢
: internal component.
• C : panel designation.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• p : parts mounted on the conductor side.
•
®
: Through hole.
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• U : B+ Line.
• V : 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.
• 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 (TAPE)
d : PB (TAPE)
G : REC (DECK B)
J : CD
c : CD (digital out)
E : PB (MD)
j : REC (MD)
p : PB (digital out)
l : REC (dihgital in)
• Abbreviation
AUS : Australian model.
SP : Singapore model..
MY : Malaysia model.
JE : Tourist model.
HK : Hong Kong model.
AR : Argentine model.
CH :Chinese model.
KR : korea model.
Note:
The components identified by mark ! or dotted line with
mark ! are critical for safety.
Replace only with part number specified.
C
These are omitted
EB
Q
C
These are omitted
EB
IC101 #ª FE
1
2
3
4
WAVEFORMS
– BD ( CD) SECTION –
IC101 %º XTAI
IC101 %¡ TE
IC101 $¡ FE
– BD (MD) (1/2) SECTION –
1
2
3
4
5
6
7
8
IC101 1, 2 (I, J) (PLAY mode)
IC101 4 (A) (PLAY mode)
IC101 8, 9 (E, F) (PLAY mode)
IC121 !§ (OSCI)
IC121 @¶ (LRCK)
IC121 @ª (FS256)
IC121 @• (XBCK)
IC121 (º (FS4)
0.46Vp-p
0.1Vp-p
0.06Vp-p
3.1Vp-p
22.581MHz
3.2Vp-p
44.1kHz
3.8Vp-p
2.822MHz
3.8Vp-p
11.29MHz
3.2Vp-p
176.4kHz
– BD (MD) (2/2) SECTION –
1
2
IC501 !¡ XC-OUT
IC501 !£ X-OUT
– MAIN (3/3) SECTION –
16MHz
5.5Vp-p
32.768kHz
5.2Vp-p
– MD DIGITAL SECTION –
IC316 !£ (XOUT)
1
3.2Vp-p
10MHz
3.1Vp-p
16.9MHz
1.2Vp-p
(PLAY)
2.5V
APPROX 200m Vp-p
(
PLAY
)
2.5V
APPROX 500mVp-p
(
PLAY
)
7.5µsec
2.4Vp-p
IC101 @§ MDP
5