Sharp HT-CN410DVH User manual

HT-CN410DVH
1
HOME CINEMA WITH DVD
Page
SPECIFICATIONS..................................................................................................................................................................4
LASER BEAM SAFETY PRECAUTIONS ..............................................................................................................................6
STANDARD NOTES FOR SERVICING.................................................................................................................................7
OPERATING CONTROLS AND FUNCTIONS......................................................................................................................10
TROUBLESHOOTING..........................................................................................................................................................13
BLOCK DIAGRAMS..............................................................................................................................................................14
SCHEMATIC DIAGRAMS / IC’S PIN VOLTAGE...................................................................................................................16
WAVEFORMS.......................................................................................................................................................................28
WIRING DIAGRAM...............................................................................................................................................................31
IC PIN FUNCTION DESCRIPTIONS....................................................................................................................................38
FL DISPLAY..........................................................................................................................................................................65
PARTS GUIDE
SERVICE MANUAL
No.S9502HTN410DV
SHARP CORPORATION
CONTENTS
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
HT-CN410DVH
MODEL
• In the interests of user-safety (Required by safety
regulations in some countries) the set should be restored to
its original condition and only parts identical to those
specified be used.
(for Middle East/ Africa/ Thailand)
HT-CN410DVH Home Cinema with DVD consisting of HT-
CN410DVH (main unit), CP-CN410F (front speakers), CP-
CN410C (centre speaker), CP-CN410R (surround
speakers) and CP-CN410SW (subwoofer).

HT-CN410DVH
2
CHAPTER 1. GENERAL DESCRIPTION
[1] PRECAUTION FOR USING LEAD-FREE SOLDER
1. Employing lead-free solder
Example:
Indicates lead-free solder of tin,silver and copper.
2. Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder,apply lead-free wire solder. Repairing with conventional lead wire solder
may cause damage or accident due to cracks.
dedicated soldering bit,if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station
or service branch in your area.
3. Soldering
and as it has poor solder wettability,you may be apt to keep the soldering bit in contact with the PWB for extended period of
time. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded,
remove the bit from the PWB assoonas you confirm the steady soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corrected. Make sure to turn on and off the
power of the bit as required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use
of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.
Be careful when replacing parts with polarity indication on the PWB silk.
Lead-free wire solder for servicing
Ref No. Description Parts No.
PWB-A1 CONTROL PWB ASS'Y
EARPHONE PWB ASS'Y
STANDBY PWB ASS'Y
MAIN PWB ASS'Y
POWER PWB ASS'Y
PWB-A2
PWB-A3 92LABE10530201
92LABE10510003
92LABE10504004
92LABE10530101
92LABE10530301
PWB-B
PWB-C
"MAIN,DISPLAY,TERMINAL,SWITCH,POWER,JACK,TUNER,DVD,MICVIDEOOUT,CDCHANGERMOTOR(PWBONLY),
LED PWB" of this model employs lead-free solder.
The LF symbo lindicates lead-free solder,and is attached on the PWB and service manuals.The alphabetical character
following LF shows the type of lead-free solder.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 C, were commend you to use a
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 C which is higher than the conventional lead solder by 40 C,

HT-CN410DVH
3
SAFETY PRECAUTION FOR SERVICE MANUAL
AC POWER SUPPLY CORD
Precaution to be taken when replacing and servicing the
Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output
for this model is specified to be lower than Class 1 Require-
ments. However, the following precautions must be observed
during servicing to protect your eyes against exposure to the
Laser beam.
(1) When the cabinet has been removed, the power is turned
on without a compact disc, and the Pickup is on a position
outer than the lead-in position, the Laser will light for sev-
eral seconds to detect a disc. Do not look into the Pickup
Lens.
(2) The Laser Power Output of the Pickup inside the unit and
replacement service parts have already been adjusted prior
to shipping.
(3) No adjustment to the Laser Power should be attempted
when replacing or servicing the Pickup.
(4) Under no circumstances look directly into the Pickup Lens
at any time.
(5) CAUTION - Use of controls or adjustments, or performance
of procedures other than those specified herein may result
in hazardous radiation exposure.
Material: AlGaAs/AlGalnP
Wavelength: 785 nm/650 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
Laser Diode Properties
CAUTION: VISIBLE AND INVISIBLE LASER RADIATION WHEN
OPEN. DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH
OPTICAL INSTRUMENTS.
WARNUNG: SICHTBARE UND UNSICHTBARE LASERSTRAHLUNG
WENN GERÄT GEÖFFNET. NICHT IN DIE STRAHLUNG SCHAUEN
ODER DIREKT MIT OPTISCHEN HILFSMITTELN BETRACHTEN.
ATTENTION: RAYONS LASER VISIBLE ET INVISIBLE EN CAS
D'OUVERTURE. NE PAS REGARDER LE FAISCEAU DIRECTEMENT
OU AVEC DES INSTRUMENTS OPTIQUES.
92LVPE1K327210

HT-CN410DVH
4
SPECIFICATIONS
lGeneral
lAmplifier
lDVD player
lTuner
As part of our policy of continuous improvement, SHARP reserves the right to make design and specification changes
for product improvement without prior notice. The performance specification figures indicated are nominal values of
production units. There may be some deviations from these values in individual units.
Power source AC 230 V, 50 Hz
Power consumption Power on: 45 W
Power stand-by:0.6W
Dimensions Width: 428 mm Height: 55 mm
Depth: 360 mm
Weight 3.8 kg
Audio input terminals Analogue input (IN 1): RCA type × 1 pair (L/R)
Analogue input (IN 2): RCA type × 1 pair (L/R)
Audio output terminals Analogue output (OUT): RCA type × 1 pair (L/R) Headphone: 16-50 ohms (recomended: 32 ohms)
Digital output: Caoxial type x 1
Video output terminals S-video output: S-terminal × 1 Video output: RCA type × 1
Component video output: PB, PB, Y
Video output terminals SCART output: SCART terminal x 1
Output power Front speakers: RMS: 42 W (21 W + 21 W) (DIN 45 324)
Centre speaker: RMS: 21 W (DIN 45 324)
Surround speakers: RMS: 42 W (21 W + 21 W) (DIN 45 324)
Subwoofer speaker: RMS: 45 W (DIN 45 324)
Signal system PAL/NTSC colour
Supported disc types DVD (with the same region number on the back of the unit or ALL), SVCD, VCD, audio CD,
CD-R, CD-RW, MP3
Video signal Horizontal resolution: 525 lines S/N ratio: 56 dB
Audio signal Frequency characteristics Linear PCM DVD: 20 Hz to 20 kHz
(sampling rate: 48 kHz)
20 Hz to 20 kHz
(sampling rate: 96 kHz)
CD: 20 Hz to 20 kHz
S/N ratio CD: 65 dB (1 kHz)
Dynamic range Linear PCM DVD: 95 dB CD: 94 dB
Total harmonic distortion ratio 0.2 % maximum
Frequency range FM: 87.5 - 108 MHz
AM: 522 - 1620 kHz

HT-CN410DVH
5
lFront speakers
lSurround speakers
lCentre speaker
lSubwoofer
Type Full range speaker system (magnetic shield)
7 cm speaker
Maximum input power 30 W
Impedance 4 ohms
Dimensions Width: 90 mm
Height: 110 mm
Depth: 100 mm
Weight 0.46 kg/each
Type Full range speaker system
7 cm speaker
Maximum input power 30 W
Impedance 4 ohms
Dimensions Width: 90 mm
Height: 110 mm
Depth: 100 mm
Weight 0.45 kg/each
Type Full range speaker system
7 cm speaker
Maximum input power 30 W
Impedance 4 ohms
Dimensions Width: 90 mm
Height:110 mm
Depth: 100 mm
Weight 0.46 kg
Type Subwoofer system
13 cm Subwoofer
Maximum input power 60 W
Impedance 8 ohms
Dimensions Width:132 mm
Height: 282 mm
Depth: 330 mm
Weight 2.8 kg

HT-CN410DVH
6
LASER BEAM SAFETY PRECAUTIONS
This DVD player uses a pickup that emits a laser beam.
The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep your eyes at least
30cm away from the pickup lens when the diode is turned on. Do not look directly at the laser beam.
Caution: Use of controls and adjustments, or doing procedures other than those specified herein, may result in hazardous radiation
exposure.
Do not look directly at the laser beam coming
from the pickup or allow it to strike against
your skin.
Drive Mecha Assembly
Laser Beam Radiation
Laser Pickup
Turntable

HT-CN410DVH
7
STANDARD NOTES FOR SERVICING
How to Remove / Install Flat Pack-IC
1. Removal
With Hot-Air Flat Pack-IC Desoldering Machine:
(1) Prepare the hot-air flat pack-IC desoldering ma-
chine, then apply hot air to the Flat Pack-IC (about 5
to 6 seconds). (Fig. S-1-1)
Fig. S-1-1
(2) Remove the flat pack-IC with tweezers while apply-
ing the hot air.
(3) Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to centre of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
(4) Release the flat pack-IC from the CBA using twee-
zers. (Fig. S-1-6)
Caution:
1. Do not supply hot air to the chip parts around the flat
pack-IC for over 6 seconds because damage to the
chip parts may occur. Put masking tape around the
flat pack-IC to protect other parts from damage.
(Fig. S-1-2)
2. The flat pack-IC on the CBA is affixed with glue, so
be careful not to break or damage the foil of each pin
or the solder lands under the IC when removing it.
Hot-air
Flat Pack-IC
Desoldering
Machine
CBA
Flat Pack-IC
Tweezers
Masking
Tape
Fig. S-1-2
With Soldering Iron:
(1) Using desoldering braid, remove the solder from all
pins of the flat pack-IC. When you use solder flux
which is applied to all pins of the flat pack-IC, you can
remove it easily. (Fig. S-1-3)
Flat Pack-IC Desoldering Braid
Soldering Iron
Fig. S-1-3
(2) Lift each lead of the flat pack-IC upward one by one,
using a sharp pin or wire to which solder will not
adhere (iron wire). When heating the pins, use a fine
tip soldering iron or a hot air desoldering machine.
(Fig. S-1-4)
Fine Tip
Soldering Iron
Sharp
Pin
Fig. S-1-4
(3) Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to centre of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
(4) Release the flat pack-IC from the CBA using twee-
zers. (Fig. S-1-6)
With Iron Wire:
(1) Using desoldering braid, remove the solder from all
pins of the flat pack-IC. When you use solder flux
which is applied to all pins of the flat pack-IC, you can
remove it easily. (Fig. S-1-3)
(2) Affix the wire to a workbench or solid mounting point,
as shown in Fig. S-1-5.
(3) While heating the pins using a fine tip soldering iron
or hot air blower, pull up the wire as the solder melts
so as to lift the IC leads from the CBA contact pads
as shown in Fig. S-1-5.

HT-CN410DVH
8
(4) Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to centre of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
(5) Release the flat pack-IC from the CBA using twee-
zers. (Fig. S-1-6)
Note:
When using a soldering iron, care must be taken to
ensure that the flat pack-IC is not being held by glue.
When the flat pack-IC is removed from the CBA,
handle it gently because it may be damaged if force
is applied.
To Solid
Mounting Point
Soldering Iron
Iron Wire
or
Hot Air Blower
Fig. S-1-5
Fine Tip
Soldeing Iron
CBA
Flat Pack-IC
Tweezers
Fig. S-1-6
2. Installation
(1) Using desoldering braid, remove the solder from the
foil of each pin of the flat pack-IC on the CBA so you
can install a replacement flat pack-IC more easily.
(2) The "●" mark on the flat pack-IC indicates pin 1. (See
Fig. S-1-7.) Be sure this mark matches the 1 on the
PCB when positioning for installation. Then presol-
der the four corners of the flat pack-IC. (See Fig. S-
1-8.)
(3) Solder all pins of the flat pack-IC. Be sure that none
of the pins have solder bridges.
Example :
Pin 1 of the Flat Pack-IC
is indicated by a " " mark. Fig. S-1-7
Presolder
CBA
Flat Pack-IC
Fig. S-1-8

HT-CN410DVH
9
Instructions for Handling
Semi-conductors
Electrostatic breakdown of the semi-conductors may
occur due to a potential difference caused by electrostatic
charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1MΩ) that is properly
grounded to remove any static electricity that may be
charged on the body.
2. Ground for Workbench
Be sure to place a conductive sheet or copper plate with
proper grounding (1MΩ) on the workbench or other
surface, where the semi-conductors are to be placed.
Because the static electricity charge on clothing will not
escape through the body grounding band, be careful to
avoid contacting semi-conductors with your clothing.
CBA
< Incorrect >
CBA
Grounding Band
Conductive Sheet or
Copper Plate
< Correct >

HT-CN410DVH
10
OPERATING CONTROLS AND FUNCTIONS
nMain unit (front panel)
1. On/Stand-by Button
2. Disc Tray
3. Disc Tray Open/Close Button
4. Remote Sensor
5. Play or Pause Button
6. Chapter (track) Skip Down or Preset/Tuning Down Button
7. Chapter (track) Skip Up or Preset/Tuning Up Button
8. Volume Up and Down or Speaker Level Adjust Buttons
9. Power Stand-by Indicator
10. Stop Button
11. Function Button
12. Speaker Level Mode Button
13. Headphone socket
14. Speaker Indicators
(1) Left Front Speaker Indicator
(2) Centre Speaker Indicator
(3) Right Front Speaker Indicator
(4) Left Surround Speaker Indicator
(5) Subwoofer Indicator
(6) Right Surround Speaker Indicator
15. DVD Indicator
16. JPEG Indicator
17. P - SCAN mode
18. Dolby Digital Signal Indicator
19. Play Indicator
20. Pause Indicator
21. SVCD/VCD/CD Indicator
22. MP3 Indicator
23. DTS Signal Indicator
24. Dolby Pro Logic/Pro Logic II Indicator
25. Stereo (2-ch) or FM Stereo Receiving Indicator
26. Title Indicator
27. Track Indicator
28. Chapter Indicator
29. Tuner Preset Indicator
30. Programme Indicator
31. Sleep Indicator
32. Repeat Indicator
33. A - B Repeat Indicator
34. RDS Indicator

HT-CN410DVH
11
OPERATING CONTROLS AND FUNCTIONS
nMain unit (rear panel)
1. AC Power Lead
2. Speaker Terminals
3. Audio Output Sockets
4. Audio Input Sockets (TV/AUX)
5. Digital Output Socket (Coaxial)
6. Video Output Socket
7. Component Video Output Socket
8. SCART Output Socket (Audio + Video)
9. AM Loop Aerial Socket
10. S-video Output Socket
11. FM 75 Ohms Aerial Socket
76 9
11
2 84
<The bottom of the unit>
3 5
10
1

HT-CN410DVH
12
nRemote Control 1. Remote Control Transmitter
2. On/Stand-by Button
3. Function Button
4. Display Button
5. Dimmer
6. Program Button
7. Language Select Button
8. Frame Advance Button (Step Function)
9. Slow Motion Button
10. Setup Menu Button
11. Cursor Buttons
12. PBC/MENU Button
13. Stop Button
14. Play or Pause Button .
15. Surround/Stereo (2-ch) Listening Mode Button
16. Audio Select Button.
17. Direct Number Buttons
18. Fast Reverse or Tuning Down Button
19. Fast Forward or Tuning Up Button
20. Speaker Level Mode Button
21. Angle Select Button
22. Disc Tray Open/Close Button
23. NTSC/PAL Select Button
24. Sleep Button
25. Interlace and Progressive Scan Button
26. Title Select Button
27. Subtitle Select Button
28. Repeat Play Button
29. A - B Repeat Button
30. Return Button
31. Enter Button
32. Zoom Button
33. Volume adjust up Button
34. Volume adjust down Button
35. Mute Button
36. EQ (equaliser) Button
37. Direct Button
38. Chapter (track) Skip Up or Preset Up Button
39. Chapter (track) Skip Down or Preset Down Button
40. FM Stereo/Mono Select Button
41. Memory Button
1
3
54
76
2
98
14 13
10
12
17
11
16 15
19 18
21 20
23
25
24
27
26
22
29
28
34
33
30
32
37
31
36
35
39
38
41
40

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.
No power:
lIs the power cord firmly plugged into the power out-
let?
lOne of the safety mechanisms may be operating. In
this event, unplug the player from the power outlet
briefly and then plug it in again.
No picture:
lCheck that the system is connected securely.
lThe video connecting system coed is damaged.
Replace it with a new one.
lMake sure you connect the system to video input con-
nector on the TV.
lMake sure you turn on the TV.
lMake sure you select the video input on the TV so
that you can view the pictures from this system.
The picture noise appears:
lClear the disc.
lIf 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.
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:
lThe aspect rate is fixed on your DVD disc.
lIf you connect the system with the S-Video cable,
connect directly to the TV. Otherwise, you may not
change the aspect rate.
lDepending on the TV, you may not change the aspect
rate.
There is no sound or only a very low-level
sound is heard:
lCheck that the speakers and components are con-
nected securely.
lMake sure that you have selected the correct source
on the system.
lThe 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.
lThe audio connecting cord is damaged. Replace it
with a new one.
lThe system or fast reverse is performed. Press PLAY/
PAUSE 3/8to return to normal play mode.
lCheck the speaker settings.
The left and right sounds are unbalanced or
reversed:
lCheck that the speakers and components are con-
nected correctly and securely.
lAdjust front balance parameter using SELECT and
VOLUME +/-.
Severe hum or noise is heard:
lCheck that the speakers and components are con-
nected correctly and securely.
lCheck that the connecting cords are away from a
transformer or motor, and at least 3 meters away from
a TV set or fluorescent light.
lMove your TV away from the audio components.
lThe plugs and jacks are dirty, wipe them with a cloth
slightly moistened with alcohol.
lClear the disc.
The sound losses stereo effect when you play a
Video CD or a CD:
lSet the Audio mode to "STEREO" in the SETUP
menu.
lMake sure you connect the system appropriately.
lThe surround effect is difficult to hear when you are
playing a Dolby Digital sound track.
lCheck the speaker connections.
lDepending 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.
The sound comes from the centre speaker only:
lDepending on the disc, the sound may come from the
centre speaker only.
No sound is heard from the centre speaker:
lMake sure the centre is set to "ON" in SETUP menu.
lYou may set the listening mode to Dolby Pro Logistic
Phantom.
lAdjust the speaker volume.
No sound or only a very low-level sound is
heard from the rear speakers:
lMake sure the rear is set to "ON" in SETUP menu.
lAdjust the speaker volume.
The language for the subtitles cannot be
changed when you play a DVD:
lMultilingual subtitles are not recorded on the DVD.
lChanging the language for the subtitles is prohibited
on the DVD.
The subtitles cannot turn off when you play a
DVD:
lDepending on the DVD, you may not be able to turn
the subtitles off.
The angles cannot be changed when you play a
DVD:
lMulti-angles are not recorded on the DVD.
lChange the angles when the angle mark appears on
the TV screen.
lChanging the angles is prohibited on the DVD.
The system does not operate properly:
lStatic electricity, etc., may affect the system's opera-
tion.
lPress 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
123456
-
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
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 CS
Notice:R1-R11=0R
L1-L10=30UH
C1-C6=0R
L2 L3L4 L5
L6 L8 L10
R6 R8 IC2
C1-C6=470U
R1 R3 R5 R7
R9 R11 R2 R4
L2 L3L4 L5
L6 L8 L10
R6 R8 IC2
R1 R3 R5 R7
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)
78 9 10 11 12
6
ES6809
u_COM
C
AT24C02
R
IAL EEPROM
MBM29LV800BA
EPROM
IC 74HC374
I/O PIN EXPAND
Logic HEX Inverter
IC SN7404 COAXIAL OUT
Y.U.V OUT
(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 " " 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.
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.
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.
2. All resistance values are indicated in ohms (K=103,
M=106).
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.
(Top View) (Bottom View)
Electrolytic Capacitor
+
CBA Symbols
Transistor Transistor
(Top View)
ECB
(Top View)
ECB

HT-CN410DVH
17
LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS
ON THE FOLLOWING 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.
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.

HT-CN410DVH
18
SCHEMATIC DIAGRAM FOR CONTROL PCB
Figure 1: SCHEMATIC DIAGRAM FOR CONTROL PCB (1/2)
A
B
C
D
E
F
G
H
123456
R2521 33
C2511
104
D2508 1N4148
1 2 3
SN251
SENSOR
C2515 104
ZD252 5V6
ZD251 5V6
C2514 100P
C2513
220U/35V
C2509 104
TA2506 TA2510
SELECT
SOURCE
OSC1*
1
RESET*
2
MODE*
3
REMOTE*
4
Din/out*
5
IIC SDA*
6
IIC SCL*
7
CLK
8
STB
9
K1
10
K2
11
K3
12
K4
13
VDD
14
Seg1/KS1
15
Seg2/KS2
16
Seg3/KS3
17
Seg4/KS4
18
Seg5/KS5
19
Seg6/KS6
20
Seg7/KS7
21
Seg8/KS8
22
Seg9/KS9
23
Seg10/KS10
24
Seg11/KS11
25
Seg12/KS12
26
Grid6 39
Grid7 38
Grid8 37
Seg20/Grid9 36
Seg19/Grig10 35
VEE 34
VDD 33
Seg18/Grid11 32
Seg17/Grid12 31
Seg16/Grid13 30
Seg15/Grid14 29
Seg14/Grid15 28
Seg13/Grid16 27
OSC2
GND
GPIO1* GPIO2* GPIO3* GPIO4*
PSW*
VDD
Grid1 Grid2 Grid3 Grid4 Grid5 40
41 42 43 44 45 46 47 48 49 50 51 52
IC251
V63111
R2510 10K
10K 10K
R2511 R2512
R2528 1K
XL2501
455K
C2507
150P
C2506
150P
C2505 10U/50V
ZD253 3V
TA2501 TA2502 TA2503
TA2504
TA2505
OPEN/CLOSE
PLAY/PAUSE STOP PREV NEXT
D2507 1N4148
D2506 1N4148
R2519 33K R2518 R2517 R2516 10K
10K 10K
C2508 104
D2504 1N4148
R2522 33
R2523 33
R2515 10K
R2514 10K
R2520 470
C2512 104
R2505 47
VFD_CK
VFD_CE
VFD_DA
IR
Q2502
2SC1623
R2507 1K5
R2504 47K
R2506 10K
1
2
3
4
5
6
7
RB5503
ON/OFF
BK5V
-27VF
PMUTE
GND
GND
AC1
AC2
R2501
1K
Q2501
2SA812
R2509 10K
D2501
1N4148
1 2
DP251
R2524 1K
R2525 1K R2526 22K
ZD254
5V6
R2513 4K7
R2529 10k
BK5V BK5V
1
2
3
4
5
6
7
8
9
10
RB204
CN10/20
LED-1 LED-2
LED-1 LED-2
TA2507-1
TA2507-2
TA2507-1
TA2507-2
R2502 4.7K
R2532 0
R2533 0
R2534 0
R2535 0
VFD_DA
VFD_CK
VFD_CE
R25381.2K R25374.7K R25364.7K
+
C2504 100UF/16V
+
C2520
100UF/16V
+
C2503
100UF/16V
R2539 0
R2540 0
TA2508 TA2509
UP
DOWN
C2521 104
R2541 22k
R2542 3.3K
C2516 104
C2522 223 C2523 223 C2524 223 C2525 223
R2543 2.2K
2.2K
2.2K
R2544
R2545
C2528 103
C2527 103 C2526 103
R2546 0
R2547 0
R2548 0R2549 0
R2550 0
R2551 0
R2552 0
R2553
0
R2554 0 R2555 0
R2564 10 ZD255 5V1
R2556
0
R2558 0
R2559 0
R2560 0R2563 0
R2562 0
R2561 0

HT-CN410DVH
19
Figure 1: SCHEMATIC DIAGRAM FOR CONTROL PCB (2/2)
78 9 10 11 12
6
LD2501 STANDBY
C2513
220U/35V
POWER
Seg11/KS11
Seg12/KS12
26
Grid6 39
Grid7 38
Grid8 37
S
eg20/Grid9 36
e
g19/Grig10 35
VEE 34
VDD 33
e
g18/Grid11 32
e
g17/Grid12 31
e
g16/Grid13 30
e
g15/Grid14 29
e
g14/Grid15 28
e
g13/Grid16 27
Grid4
Grid5 40
C2510
104
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
DP251
41K
51K R2526 22K
ZD254
5V6
TA2507
LED-1
LED-2
LED-1
LED-2
TA2507-2
TA2507-1
TA2507-2
TA2507-1
1
2
3
4
5
CN5504
CN5/20/Z
1
2
3
4
5
RB5504
CN5/20/Z
GND
GND
JP2
JP1
JP3
FB5506 600
FB5505 600
C5507
104
1
2
3
4
RB5501
3
6
7
1
5
2
4
JK5501
EARPHONE
FB5507 600
C5501
104 C5502 104
C2502
104
C2501
104
ZD262 5V6
EARPHONE SECTION
STANDBY SECTION
DISPLAY

HT-CN410DVH
20
SCHEMATIC DIAGRAM FOR POWER PCB
Figure 2: SCHEMATIC DIAGRAM FOR POWER PCB (1/2)
A
B
C
D
E
F
G
H
123456
1 2
CN901
CN2P-396-2
12 43
L901
22mH
12 43
L902
22mH
NTC901
RT-5A
C909 103P-1KV
C910 103P-1KV
R903
R04-470K
R904
R04-470K
C913
102P-1KV
C911
C155P-250V
1
1
C951
470P-1KV
C953 102P-1KV
R993
R10-120
R901
R04-910K
R902 R04-220
GT901
GT10
1
24
3
IC901
IC-EL817C
D959 HER104
D960 1N5822
C981
220P-1KV
C982
220P-1KV
C983 220P-1KV
C984
220P-1KV
R04 IS 1/4W
R06 IS 1/6W
R04-1-F IS 1/4W 1 OHMRES FUSE
ECO POWER <0.6W
R06-10KM IS 1/6W 10KOHM 1%
SP1CREW-A
SP2CREW-A
SP3CREW-A
SP4CREW-A
D903
1N4148
D904
1N4148
1 2 3 4
5 6 7 8
IC902
FSDM0265RN
D910 HER104
C985
1000U 16V
1
2
3
IC953
IC-TL431
R981
R06-1K5
R980
R06-220
C992
CC104P
R98
3
R06-4
C986
C104P-100V
D907
PR1507
T3.15AL 250V
4
5
3
1
6
10
2
8
T902
R909
R30-120
R910
R30-120
C905
1000pF/250V
C906
1000pF/250V
JMPAA Jumper
C917
MC104P
C922
0.0022uF/400V
DS
G
Q901
STP9NK50Z
DS
G
Q902
STP9NK50Z
R916
R06-10
C918
22U 50V
C916
101P-1KV
4
12
3
BD901
BD-KBU808
C919
CC104P
R915
R06-4.7K
C920
470P-1KV
R917
R30-120
R919
R06-27
ZD906
ZD-5V1
5
3
2 9
101
7
6
8
T903
R907
R04-2K7
ZD901
ZD-15V
R905R04-47
R908R04-2K7
ZD902
ZD-15V
R906R04-47
C915
222P-1KV
R914
R04-62K
470U 2
5
P9
PAD-2.6
P10
PAD-2.6
C966 MC104P
C923 1000pF/250V
C924 1000pF/250V
P6
PAD-D2.6
P5
PAD-D2.6
P7
PAD-D2.6
P8
PAD-D2.6
P11
PAD-D2.6
B
C E
Q951
2
S
B
CE
Q952
2SA733
C952
470P-1KV
R912
R04-220K
R982
R06-1K
5
R920
R20-47
C903
C474P-275V
F901
C907
100U 250V
C908
100U 250V
C914
102P-1KV
C904 0.22uF/275V
3
2
5
6
10
12
14
15
T901
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
REMARKS :
R901A
R04-910K
C921
0.0022uF/400V
C926
221P-1KV
When Servicing, pay attention as the area enclosed
by this line ( ) is directly connected with AC.