Types Of Transistor And Led; Chapter 6. Circuit Schematics And Parts Layout; Notes On Schematic Diagram - Sharp CD-SW440N Service Manual

CHAPTER 6. 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 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
REF. NO DESCRIPTION
VR701 VOLUME
SW701 ON/STAND-BY
SW702 FUNCTION
SW703 DISC/USB/TAPE STOP/TUNING DOWN
SW704 DISC/USB/iPod PLAY or PAUSE/
TAPE PLAY/TUNING UP
SW705 OPEN/CLOSE

[2] Types Of Transistor And LED

B
FRONT
(3)
VIEW
E
(1)
E C B
(S)(G)(D)
(1)(2)(3)
S8550
KTA1274Y
S8050
KTC3199
KTA1266
KTC3203Y
FRONT
VIEW
B C E
B772
KIA7805A
050N60P
POSITION
MAX -- MIN
ON -- OFF
ON -- OFF
ON -- OFF
ON -- OFF
ON -- OFF
TOP VIEW
TOP
C
VIEW (2)
KRA102S
1N4004
KRC107
DRL204F
KRC104S
MA111
H1A
KTA1504GR
KTC3875GR
KRA107S
FRONT
VIEW
1 23
TDA8920CJ
• 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 playback.
3. In the power section, a tape is being playback.
4. 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.
FRONT
VIEW
343VC3F
FRONT
VIEW
+ AC AC -
10XB60F
6 – 1
CD-SW440N
) are important for main-
TOP VIEW
HSS4148
TOP VIEW
B C E
HD