Sharp DV-NC100H Service Manual ▷ View online
1-11-9
H9740FIS
Note:
If a mechanical malfunction occurs, the power is turned off. When the power comes on again after that by pressing
[OPERATE] button, an error message is displayed on the TV screen for 5 seconds.
[OPERATE] button, an error message is displayed on the TV screen for 5 seconds.
FUNCTION INDICATOR SYMBOLS
TV screen
MODE
INDICATOR ACTIVE
When the drum is not working properly
When cassette loading mechanism is not
functioning correctly
functioning correctly
When tape loading mechanism is not
functioning correctly
functioning correctly
When reel and capstan mechanism is not
functioning correctly
functioning correctly
" P" is displayed on a TV screen. (Refer to Fig. 5.)
" D" is displayed on a TV screen. (Refer to Fig. 4.)
" C" is displayed on a TV screen. (Refer to Fig. 3.)
" T" is displayed on a TV screen. (Refer to Fig. 2.)
" R" is displayed on a TV screen. (Refer to Fig. 1.)
P-ON Power safety detection
When reel and capstan mechanism is not functioning
correctly
correctly
Fig. 1
When tape loading mechanism is not functioning
correctly
correctly
Fig. 2
When cassette loading mechanism is not functioning
correctly
correctly
Fig. 3
When the drum is not working properly
Fig. 4
P-ON Power safety detection
Fig. 5
1-12-1
H9740SC
Standard Notes
WARNING
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 "
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.
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.
Capacitor Temperature Markings
Mark
Capacity
change rate
Standard
temperature
Temperature
range
(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.
following symbols.
SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS
Notes:
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.
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.
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
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
1-12-2
H9740SC
LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING
PAGES:
PAGES:
1. CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE.
2. CAUTION:
Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F1001) is blown, first check to see that all components in the power supply circuit are not defective
before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power
supply circuit to fail.
before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power
supply circuit to fail.
3. Note:
(1) Do not use the part number shown on the drawings for ordering. The correct part number is shown in the parts
list, and may be slightly different or amended since the drawings were prepared.
(2) To maintain original function and reliability of repaired units, use only original replacement parts which are listed
with their part numbers in the parts list section of the service manual.
4. Voltage indications for PLAY modes on the schematics are as shown below:
2
3
1
5.0
(2.5)
(2.5)
PLAY mode
STOP mode
STOP mode
5.0
The same voltage for
both PLAY & STOP modes Indicates that the voltage
both PLAY & STOP modes Indicates that the voltage
is not consistent here.
< DVD Section >
2
3
1
5.0
(2.5)
< >
(2.5)
< >
PLAY mode
REC mode
DVD mode
REC mode
DVD mode
5.0
The same voltage for
both PLAY, REC & DVD
modes
both PLAY, REC & DVD
modes
Indicates that the voltage
is not consistent here.
is not consistent here.
< VCR Section >
Unit: Volts
5. How to read converged lines
1-D3
Distinction
Area
Line
Number
(1 to 3 digits)
Examples:
1. "1-D3" means that line number "1" goes to area "D3".
2. "1-B1" means that line number "1" goes to area "B1".
2. "1-B1" means that line number "1" goes to area "B1".
3
2
1
A
B
C
D
1-B1
1-D3
AREA D3
AREA B1
6. Test Point Information
: Indicates a test point with a jumper wire across a hole in the PCB.
: Used to indicate a test point with a component lead on foil side.
: Used to indicate a test point with no test pin.
: Used to indicate a test point with a test pin.
1-12-3
1-12-4
H9741SCM1
Main 1/9 Schematic Diagram < VCR Section >
