Sharp HT-SB400H (serv.man3) Service Manual ▷ View online
HT-SB400
6 – 1
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 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 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.
• 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.
[2] Types Of Transistor And LED
KiA1117F
B(1) C(2) E(3)
TOP VIEW
TOP VIEW
MA111G
TOP VIEW
KRC101S
KRC107S
KRC107S
KRA102S
KRC104S
B
(3)
E
(1)
C
(2)
TOP
VIEW
PCL194
PX0421
PX0421
KDS226
HT-SB400
6 – 2
[3] Schematic Diagram
MAIN PWB-A1
TO
MT
OUCH PWB-A5
(CNP700)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
Figure 6-1: MAIN SCHEMATIC DIAGRAM (1/6)
HT-SB400
6 – 3
7
8
9
10
11
12
Figure 6-2: MAIN SCHEMATIC DIAGRAM (2/6)
HT-SB400
6 – 4
T
O
AMPLIFIER SECTION
(CNP905)
T
O
AMPLIFIER SECTION
(CNP904)
E
R SECTION
P
803)
13
14
15
16
17
18
Figure 6-3: MAIN SCHEMATIC DIAGRAM (3/6)
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