DV-NC100H. Cover, Contents, , Laser beam safety precautions, Important safeguards and precautions, Standard notes for servicing, Preparation for servicing, Operating controls and functions, Cabinet disassembly instructions, Electrical adjustment instructions, Firmware renewal mode, Troubleshooting, Block diagrams, Function indicator symbols, Main Schematic diagram 1 9. - Sharp DVD Service Manual (repair manual). Page 46

1-12-1

H9740SC

Many electrical and mechanical parts in this chassis
have special characteristics. These characteristics often
pass unnoticed and the protection afforded by them
cannot necessarily be obtained by using replacement
components rated for higher voltage, wattage, etc.
Replacement parts that have these special safety
characteristics are identified in this manual and its
supplements; electrical components having such
features are identified by the mark " 

!

 " in the schematic

diagram and the parts list. Before replacing any of these
components, read the parts list in this manual carefully.
The use of substitute replacement parts that do not
have the same safety characteristics as specified in the
parts list may create shock, fire, or other hazards.

(B)

(F)

±

10%

+30 - 80%

±

15%

+30 - 80%

20

°

C

20

°

C

20

°

C

20

°

C

-25~+85

°

C

-25~+85

°

C

-25~+85

°

C

-10~+70

°

C

(SR)

(Z)

Capacitors and transistors are represented by the
following symbols.

1. Do not use the part number shown on these draw-

ings for ordering. The correct part number is shown
in the parts list, and may be slightly different or
amended since these drawings were prepared.

2. All resistance values are indicated in ohms (K=10

3

,

M=10

6

).

3. Resistor wattages are 1/4W or 1/6W  unless other-

wise specified.

4. All capacitance values are indicated in 

µ

F

(P=10

-6

 

µ

F).

5. All voltages are DC voltages unless otherwise speci-

fied.

6. Electrical parts such as capacitors, connectors, di-

odes, IC's, transistors, resistors, switches, and fuses
are identified by four digits. The first two digits are
not shown for each component. In each block of the
diagram, there is a note such as shown below to
indicate these abbreviated two digits.

(Top View) (Bottom View)

(Bottom View)

Electrolytic Capacitor

+

Transistor or Digital Transistor

NPN Transistor

PNP Transistor

NPN Digital Transistor

PNP Digital
Transistor

(Top View)

(Top View)

E C B

E    C    B

Digital Transistor

CBA Symbols 

Schematic Diagram Symbols 

E C B

(Top View)

(Top View)

E C B

E C B