Read Sharp FV-DB1E (serv.man3) Service Manual online
FV-DB1E
5 – 1
Audio
FV-DB1E
Service Manual
FV-DB1E
Market
E
CHAPTER 5.
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.
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
“capacitance/withstand voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
means pico-farad and the unit of the capacitor without such a sym-
bol 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
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.
nal given.
1. In the tuner section,
indicates AM
indicates FM stereo
indicates AM
indicates FM stereo
• Parts marked with “
“ (
) are important for main-
taining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the
set.
specified ones for maintaining the safety and performance of the
set.
[2] Types of transistor and LED
REF NO.
DESCRIPTION
POSITION
SW401
BAND
ON-OFF
SW402
INFO
ON-OFF
SW403
AUTO TUNE
ON-OFF
SW404
PRESET SELECT
ON-OFF
SW405
PRESET 5
ON-OFF
SW406
PRESET 4
ON-OFF
SW407
PRESET 3
ON-OFF
SW408
PRESET 2
ON-OFF
SW409
PRESET 1
ON-OFF
SW410
ENTER
ON-OFF
SW411
SOUND
ON-OFF
SW413
TUNING UP
ON-OFF
SW414
VOLUME UP
ON-OFF
SW415
VOLUME DOWN
ON-OFF
SW416
TUNING DOWN
ON-OFF
SW417
CLOCK
ON-OFF
SW418
MENU
ON-OFF
SW701
ON/STAND-BY
ON-OFF
REF NO.
DESCRIPTION
POSITION
2SC5477
KTC3875 GR
B
(3)
E
(1)
C
(2)
TOP
VIEW
2SC562 C
KRC107 M
KTA1266 GR
KTC3199 GR
VIEW
FRONT
E C B
(S)(G)(D)
(1)(2)(3)
LP3052AU
LPBB73VQ
FRONT
VIEW
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