Chapter 4. Circuit Description; Notes On Schematic Diagram; Types Of Transistor And Led - Sharp QT-V5E Service Manual

QT-V5E/QT-V5H
Audio CHAPTER 4. E Market QT-V5E/QT-V5H Service Manual QT-V5E/QT-V5H
CIRCUIT DESCRIPTION

[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 resistor without any symbol is ohm-type resis-
tor. 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 sym-
bol is microfarad. As to electrolytic capacitor, the expression
Ocapacitance/withstand voltageO is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
REF. NO DESCRIPTION
SW1 POWER
SW501 VOLUME DOWN
SW502 VOLUME UP
SW503 STOP
SW504 PLAY

[2] Types of transistor and LED

(S)(G)(D)
(1)(2)(3)
MMBT9014 C
8050C
KTC3199 GR
POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
FRONT
VIEW
E C B
• Schematic diagram and Wiring Side of P.W.Board for this model are
subject to change for improvement without prior notice.
• The indicated voltage in each section is the one measured by Digi-
tal Multimeter between such a section and the chassis with no sig-
nal given.
1. In the tuner section,
indicates AM
indicates FM stereo
2. In the main 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 power section, a tape is being played back.
5. In the CD section, the CD is stopped.
• Parts marked with "
taining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the
set.
REF. NO
SW505 SKIP DOWN
SW506 SKIP UP
SW507 TUNER (BAND)
SW508 OPEN/CLOSE
FRONT
VIEW
7811B
4 – 1
" ( ) are important for main-
DESCRIPTION POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF