Read Sharp HT-SB30 (serv.man3) Service Manual online
HT-SB30
7 – 1
CHAPTER 7. CIRCUIT SCHEMATICS AND PARTS LAYOUT
[1] Notes On Schematic Diagram
[2] Types Of Transistor And LED
•
•
•
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 resistor.
Besides, the one with “Fusible” is a fuse type.
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 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
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 subject to change for
improvement without prior notice.
for this model are subject to change for
improvement without prior notice.
•
•
The indicated voltage in each section is the one
measured by Digital Multimeter between such a
section and the chassis with no signal given.
measured by Digital Multimeter between such a
section and the chassis with no signal given.
Parts marked with “
” are important for
maintaining the safety of the set. Be sure to replace
these parts with specified ones for maintaining the
safety and performance of the set.
these parts with specified ones for maintaining the
safety and performance of the set.
PWB Switch Location
MAX
MIN
MAX MIN
OFF
ON
OFF
ON
OFF
ON
OFF
ON
POSITION
DESCRIPTION
REF.NO
SW705
SW706
SW720
SW704
SW721
SW722
VOLUME -
VOLUME +
ON / STAND-BY
SURROUND
SOURCE
PAIRING
C
(3)
TOP
VIEW
EXA701WJ
EXA726WJ
GDSK14++
EXA686WJ
RB080L30
EXA726WJ
GDSK14++
EXA686WJ
RB080L30
TOP VIEW
DA1010++
TOP VIEW
KRC101S
KRC102S
KRC104S
KRC107S
KTA1544T
KRC102S
KRC104S
KRC107S
KTA1544T
KRA102S
FRONT VIEW
3
RED
BLUE
1
2
PXA006
1
3
2
A
N
N
O
D
D
E
B
L
U
E
E
R
E
D
E
D
FRONT VIEW
A
C
SLi343YC3F
C
A
A = Anode
C = Cathode
C = Cathode
FRONT VIEW
BLUE
A343BD2S2Z
ZENER
BLUE
CATHODE
BLUE
ANODE
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