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CHAPTER 5. CIRCUIT SCHEMATICS AND PARTS LAYOUT
[1] Notes On Schematic Diagram
• Resistor:
To differentiate the units of resistors, such symbol as
K and M are used: the symbol K means 1000 ohm
and the symbol M means 1000 kohm and the resis-
tor without any symbol is ohm-type resistor.
Besides, the one with "Fusible" is a fuse type.
• Capacitor:
To indicate the unit of capacitor, a symbol P is used:
this symbol P means pico-farad and the unit of the
capacitor without such a symbol is microfarad. As to
electrolytic capacitor, the expression "capacitance/
withstand voltage" is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
• Schematic diagram and Wiring Side of P.W.Board
for
this
model
are
improvement without prior notice.
REF. NO
DESCRIPTION
VR301
VOLUME
SW701
USB
SW702
CD
SW703
Memo / Folder
SW704
Repeat / Random
SW705
Stop
SW706
Play/Pause
SW707
Fast Reverse / Track Down / Folder Down
SW708
Fast Forward / Track Up / Folder Up
[2] Types Of Transistor And LED
FRONT
VIEW
E C B
(S)(G)(D)
(1)(2)(3)
B764
9014C
S8050
9015C
subject
to
change
POSITION
MAX—MIN
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
B
(3)
TOP
C
(2)
VIEW
E
(1)
HY3C
HY4C
FRONT
VIEW
92L22708030000
92L22708050012
92L22708050001
• The indicated voltage in each section is the one
measured by Digital Multimeter between such a
section and the chassis with no signal given.
1. In the tuner section,
indicates AM
indicates FM stereo
2. In the audio section, a tape is being played back.
3. In the deck section, a tape is being played back.
( ) indicates the record state.
4. In the rectifier section, a tape is being played
back.
5. In the CD section, the CD is stopped.
Parts marked with "
•
important for maintaining the safety of the set. Be
for
sure to replace these parts with specified ones for
maintaining the safety and performance of the set.
TOP VIEW
1N4001
1N4148
5
– 1
QT-MP3W5
" (
) are
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