Sharp HT-CN410DVH (serv.man2) Service Manual ▷ View online
HT-CN410DVH
13
TROUBLESHOOTING
If you experience any of the following difficulties while
using the system, use troubleshooting guide to help you
remedy the problem. Should any problem persist,
consult your nearest service centre.
using the system, use troubleshooting guide to help you
remedy the problem. Should any problem persist,
consult your nearest service centre.
No power:
l Is the power cord firmly plugged into the power out-
let?
l One of the safety mechanisms may be operating. In
this event, unplug the player from the power outlet
briefly and then plug it in again.
briefly and then plug it in again.
No picture:
l Check that the system is connected securely.
l The video connecting system coed is damaged.
l The video connecting system coed is damaged.
Replace it with a new one.
l Make sure you connect the system to video input con-
nector on the TV.
l Make sure you turn on the TV.
l Make sure you select the video input on the TV so
l Make sure you select the video input on the TV so
that you can view the pictures from this system.
The picture noise appears:
l Clear the disc.
l If video from this system has to go through your VCR
to get too your TV, the copy-protection applied to
some DVD programs could affect picture quality. If
you still experience problems after checking your con-
nections, please try connecting your DVD system
directly to your TV's S-Video input, if your TV is
equipped with this input.
some DVD programs could affect picture quality. If
you still experience problems after checking your con-
nections, please try connecting your DVD system
directly to your TV's S-Video input, if your TV is
equipped with this input.
The aspect ratio of the screen cannot be
changed even though you set "TV DISPLAY" in
the SETUP menu when you play a wide picture:
changed even though you set "TV DISPLAY" in
the SETUP menu when you play a wide picture:
l The aspect rate is fixed on your DVD disc.
l If you connect the system with the S-Video cable,
connect directly to the TV. Otherwise, you may not
change the aspect rate.
change the aspect rate.
l Depending on the TV, you may not change the aspect
rate.
There is no sound or only a very low-level
sound is heard:
sound is heard:
l Check that the speakers and components are con-
nected securely.
l Make sure that you have selected the correct source
on the system.
l The protective device on the system has been acti-
vated because of a short circuit. Turn off the system,
eliminate the short-circuit problem and turn on the
power again.
eliminate the short-circuit problem and turn on the
power again.
l The audio connecting cord is damaged. Replace it
with a new one.
l The system or fast reverse is performed. Press PLAY/
PAUSE
3 /8 to return to normal play mode.
l Check the speaker settings.
The left and right sounds are unbalanced or
reversed:
reversed:
l Check that the speakers and components are con-
nected correctly and securely.
l Adjust front balance parameter using SELECT and
VOLUME +/-.
Severe hum or noise is heard:
l Check that the speakers and components are con-
nected correctly and securely.
l Check that the connecting cords are away from a
transformer or motor, and at least 3 meters away from
a TV set or fluorescent light.
a TV set or fluorescent light.
l Move your TV away from the audio components.
l The plugs and jacks are dirty, wipe them with a cloth
slightly moistened with alcohol.
l Clear the disc.
The sound losses stereo effect when you play a
Video CD or a CD:
Video CD or a CD:
l Set the Audio mode to "STEREO" in the SETUP
menu.
l Make sure you connect the system appropriately.
l The surround effect is difficult to hear when you are
playing a Dolby Digital sound track.
l Check the speaker connections.
l Depending on the DVD disc, the output signal may
not be the entire 5.1 channel but monaural or stereo
even if the sound track is recorded in Dolby Digital
format.
even if the sound track is recorded in Dolby Digital
format.
The sound comes from the centre speaker only:
l Depending on the disc, the sound may come from the
centre speaker only.
No sound is heard from the centre speaker:
l Make sure the centre is set to "ON" in SETUP menu.
l You may set the listening mode to Dolby Pro Logistic
Phantom.
l Adjust the speaker volume.
No sound or only a very low-level sound is
heard from the rear speakers:
heard from the rear speakers:
l Make sure the rear is set to "ON" in SETUP menu.
l Adjust the speaker volume.
The language for the subtitles cannot be
changed when you play a DVD:
changed when you play a DVD:
l Multilingual subtitles are not recorded on the DVD.
l Changing the language for the subtitles is prohibited
on the DVD.
The subtitles cannot turn off when you play a
DVD:
DVD:
l Depending on the DVD, you may not be able to turn
the subtitles off.
The angles cannot be changed when you play a
DVD:
DVD:
l Multi-angles are not recorded on the DVD.
l Change the angles when the angle mark appears on
l Change the angles when the angle mark appears on
the TV screen.
l Changing the angles is prohibited on the DVD.
The system does not operate properly:
l Static electricity, etc., may affect the system's opera-
tion.
l Press the POWER button to turn off, then press again
to turn on.
HT-CN410DVH
14
BLOCK DIAGRAM
FIGURE 1. BLOCK DIAGRAM (1/2)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
-
TUNER PACK
IC TEA5762H
IC SAA6588T
(RDS)
TUNER SYSTEM
DVD LOADER
SANYO DVD LODER
VFD
IC V63111
VFD CONTROL
KEY
KEY CONN SYSTEM
TV-IN
AUX-IN
IC TC4052BP
SWITCH
SWITCH
A/D
CS5342
IC ESS6602
DVD RF
IC AM5869S
DVD PACK DRIVER
ES680
u_COM
SDARM
4Mx16
IC AT24C02
SERIAL EEPROM
MBM29
EPR
L1
C1
IC1 STA518
DIGITAL POWER AM
SUB SPK
C S
Notice:R1-R11=0R
L1-L10=30UH
C1-C6=0R
L2 L3L4 L5
L6 L8 L10
R6 R8 IC2
L2 L3L4 L5
L6 L8 L10
R6 R8 IC2
C1-C6=470U
R1 R3 R5 R7
R9 R11 R2 R4
R1 R3 R5 R7
R9 R11 R2 R4
L2 L3L4 L5
L6 L8 L10
R6 R8 IC2
L6 L8 L10
R6 R8 IC2
R1 R3 R5 R7
R9 R11 R2 R4
R9 R11 R2 R4
200W
300W
+12V
+5V IN
2SC945
2SB772
2SA952
3.3V
OUT
+1.8V
OUT
Phone
5V
OUT
POWER SUPPLY
TRANSFORMER
IC KA7500C
IC BA4558D
MOSFET
MOSFET
TRANSFORMER
TRANSFORMER
BRIDGE
REGULATOR
IC FSDL0165RN
IC EL817C
MOSFET
AC 220V
+27V
VFD
-27V
+12V
AC1
AC2
BK5V
+5V
Delet
Add
+
-
+
HT-CN410DVH
15
FIGURE 1. BLOCK DIAGRAM (2/2)
7
8
9
10
11
12
6
ES6809
u_COM
C AT24C02
RIAL EEPROM
MBM29LV800BA
EPROM
IC 74HC374
I/O PIN EXPAND
Logic HEX Inverter
IC SN7404
COAXIAL OUT
Y.U.V OUT
(OR SCART)
(OR SCART)
S-VIDEO
C-VIDEO
IC IRC4558
AMPLIFIER
LINES
OUT
IC STA308-A
DIGITAL AUDIO PROCESSOR
Bilt IN TREBLE BASS EQ
VOLUME CONTROL
FR
L1
C1
C2
C3
C4 C5
C6
L2
L3
L4
L5
L6
L7
L8
L9
L10
FL
IC IRC4558
AMPLIFIER
IC TP3541
HEADPHONE AMP
IC3 STA518
DIGITAL POWER AMP
HEADPHONE
R7
R8
R5
R6
R3
R11
R4
R2
R9
R1
IC2 STA518
DIGITAL POWER AMP
IC1 STA518
DIGITAL POWER AMP
SPK
C SPK
SR SPK
SL SPK
R SPK
L SPK
-
+
-
+
-
+
-
+
-
+
-
HT-CN410DVH
16
SCHEMATIC DIAGRAMS / IC’S PIN VOLTAGE
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.
Notes:
1. Do not use the part number shown on these draw-
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
µF
(P=10
-6
µF).
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)
Electrolytic Capacitor
+
CBA Symbols
Transistor
Transistor
(Top View)
E C B
(Top View)
E C B
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