Samsung HT-C460 Schematic
Digital Home Cinema
System
Model Name : HT-C460
Model Code : HT-C460/XAZ
Speaker PS-C460
Front PS-FC460
Center PS-CC460
Rear PS-RC460
Subwoofer PS-WC460
SERVICE
Manual
Digital Home Cinema System
HT-C460
CONTENTS
1. Precaution
2. Product Specification
3. Disassembly & Reassembly
4. Troubleshooting
5. Exploded View & Part List
6. PCB Diagram
7. Schematic Diagram
Refer to the service manual in the GSPN (see the rear cover) for the more information.
GSPN (Global Service Partner Network)
Area Web Site
North America service.samsungportal.com
Latin America latin.samsungportal.com
CIS cis.samsungportal.com
Europe europe.samsungportal.com
China china.samsungportal.com
Asia asia.samsungportal.com
Mideast & Africa mea.samsungportal.com
This Service Manual is a property of Samsung Electronics
Co.,Ltd. Any unauthorized use of Manual can be punished
under applicable International and/or domestic law.
© Samsung Electronics Co.,Ltd.
Printed in Korea
May. 2010
Contents
1. Precaution
1-1 Safety Precautions ...........................................................................................1-1
1-2 Servicing Precautions ......................................................................................
1-3 Precautions for Electrostatically Sensitive Devices (ESDs) .............................
2. Product Specification
2-1 Product Feature ...............................................................................................2-1
2-2 Specifications ...................................................................................................
2-3 Specifications Analysis .....................................................................................
2-4 Accessories ......................................................................................................
3. Disassembly & Reassembly
3-1 Overall Disassembly & Reassembly ................................................................3-1
1-3
1-4
2-2
2-4
2-7
4. Troubleshooting
4-1 Checkpoints by Error Mode.............................................................................. 4-1
4-2 Measures to be taken when the Protection Circuit operates ...........................
4-3 MICOM, MPEG Initialization & Update ............................................................
4-4 Buyer-Region Code Setting Method ................................................................
5. Exploded View & Part List
5-1 Product Exploded View ....................................................................................5-1
5-2 Speaker System ...............................................................................................
5-3 Electrical Part List ............................................................................................
6. PCB Diagram
6-1 Wiring Diagram ................................................................................................6-1
6-2 FRONT PCB Top ..............................................................................................
6-3 FRONT PCB Bottom ........................................................................................
6-4 KEY PCB Top ...................................................................................................
6-5 KEY PCB Bottom .............................................................................................
6-6 MAIN PCB Top .................................................................................................
6-7 MAIN PCB Bottom ...........................................................................................
6-8 SMPS PCB Top ................................................................................................
6-9 SMPS PCB Bottom ..........................................................................................
4-19
4-20
4-23
5-3
5-4
6-2
6-4
6-5
6-6
6-8
6-11
6-12
6-13
Contents
7. Schematic Diagram
7-1 Overall Block Diagram .....................................................................................7-1
7-2 FRONT .............................................................................................................
7-3 KEY ..................................................................................................................
7-4 MAIN ................................................................................................................
7-5 MPEG
7-6 MICOM .............................................................................................................
7-7 AV I/O ...............................................................................................................
7-8 AMP .................................................................................................................
7-9 Audio AMP-1 ....................................................................................................
7-10 Audio AMP-2 ....................................................................................................
7-11 Audio AMP-3 ....................................................................................................
7-12 SMPS ...............................................................................................................
7-2
7-3
7-4
...............................................................................................................7-5
7-6
7-7
7-8
7-9
7-10
7-11
7-12
Precaution
1. Precaution
Follow these safety instructions while servicing the ESD to prevent damage and to protect against potential
hazards such as electrical shock and X-rays.
1-1 Safety Precautions
1. When reinstalling the chassis and its assemblies, be sure to restore all of the protective devices, including the
control knobs and the compartment covers.
2. Make sure that there are no cabinet openings through which people (particularly children) can make contact
with dangerous internal components.
3. Design Alteration Warning:
Never alter or add to the mechanical or electrical design of the unit.
Example: Do not add auxiliary audio or video connectors. Such alterations might create a safety hazard.
Also, any design changes or additions will void the manufacturer’s warranty.
4. Leakage Current Hot Check (Fig. 1-1):
Warning: Do not use an isolation transformer during this
test. Use a leakage-current tester or a metering system
that complies with American National Standards Institute
(ANSI C101.1, Leakage Current for Appliances), and
Underwriters Laboratories (UL Publication UL1410,
59.7).
With the unit completely reassembled, plug the AC cord
directly into a 120V AC outlet. With the unit’s power
switched from the ON to the OFF position, measure the
current between a known ground and all exposed metal
DEVICE
UNDER
TEST
TEST ALL
EXPOSED METAL
SURFACES
2-WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USING AC
ADAPTER PLUG
AS REQUIRED)
<Fig. 1-1 AC Leakage Test>
LEAKAGE
CURRENT
TESTER
(READING
SHOULD NOT BE
ABOVE 0.5mA)
parts.
Known Grounds - Earth
Known Metal parts - screwheads, metal cabinets, etc.
EARTH
GROUND
5. Insulation Resistance Cold Check:
(1) With the unit’s AC plug disconnected from the AC
source, connect an electrical jumper across the two AC
Antenna
Terminal
prongs. (2) Set the power switch to ON. (3) Measure
the resistance between the shorted AC plug and any
Exposed
Metal Part
exposed metallic parts.
Example: screwheads, metal cabinets, antenna port
If any of the exposed metallic parts has a return path
<Fig. 1-2 Insulation Resistance Test>
ohm
Ohmmeter
to the chassis, the measured resistance should be
between 1 and 5.2 megohms. If there is no return path,
the measured resistance should be “infinite.” If the resistance is outside these limits, a shock hazard might
exist. See Fig. 1-2
Samsung Electronics 1-1
1-2 Samsung Electronics
Precaution
6. Components, parts and wiring that appear to have overheated or that are otherwise damaged should be
replaced with parts that meet the original specifications. Always determine the cause of damage or overheating,
and correct any potential hazards
7. Observe the original lead dress, especially near the following areas: Antenna wiring, sharp edges, and
especially the AC and high voltage power supplies. Always inspect for pinched, out-of-place, or frayed wiring.
Do not change the spacing between components and the printed circuit board. Check the AC power cord for
damage. Make sure that no wires or components touch thermally hot parts.
8. Product Safety Notice:
Some electrical and mechanical parts have special safety-related characteristics which might not be obvious
from visual inspection. These safety features and the protection they give might be lost if the replacement
component differs from the original--even if the replacement is rated for higher voltage, wattage, etc.
9. Components that are critical for safety are indicated in the circuit diagram by shading,
or . Use
replacement components that have the same ratings, especially for flame resistance and dielectric strength
specifications. A replacement part that does not have the same safety characteristics as the original might
create shock, fire or other hazards.
Precaution
1-2 Servicing Precautions
1. Servicing precautions are printed on the cabinet. Follow them.
2. Always unplug the unit’s AC power cord from the AC power source before attempting to: (a) Remove or reinstall
any component or assembly, (b) Disconnect an electrical plug or connector, (c) Connect a test component in
parallel with an electrolytic capacitor.
3. Some components are raised above the printed circuit board for safety. An insulation tube or tape is sometimes
used. The internal wiring may be clamped to prevent contact with thermally hot components. Reinstall all such
elements to their original position.
4. After servicing, always check that the screws, components and wiring have been correctly reinstalled.
Make sure that the portion around the serviced part has not been damaged.
5. Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal
panels, input terminals and earphone jacks).
6. Insulation Checking Procedure: Disconnect the power cord from the AC source. Connect an insulation
resistance meter (500V) to the blades of the AC plug.
The insulation resistance between each blade of the AC plug and accessible conductive parts (see above)
should be greater than 1 megohm.
7. Never defeat any of the B+ voltage interlocks. Do not apply AC power to the unit (or any of its assemblies)
unless all solid-state heat sinks are correctly installed.
8. Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive
lead; always remove the instrument’s ground lead last.
First read the “Safety Precautions” section of this manual. If some unforeseen circumstance
creates a conflict between the servicing and safety precautions, always follow the safety
precautions.
Samsung Electronics 1-3
Precaution
1-3 Precautions for Electrostatically Sensitive Devices (ESDs)
Some semiconductor (“solid state”) devices are easily damaged by static electricity.
Such components are called Electrostatically Sensitive Devices (ESDs).
Examples include integrated circuits and some field-effect transistors. The following techniques will reduce the
occurrence of component damage caused by static electricity:
1. Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from
your body by touching a known earth ground. Alternatively, wear a discharging wrist-strap device. (Be sure to
remove it prior to applying power--this is an electric shock precaution.)
2. After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent
accumulation of electrostatic charge.
3. Do not use freon-propelled chemicals. These can generate electrical charges that damage ESDs.
4. Use only a grounded-tip soldering iron when soldering or unsoldering ESDs.
5. Use only an anti-static solder removal device. Many solder removal devices are not rated as “anti-static” (these
can accumulate sufficient electrical charge to damage ESDs).
6. Do not remove a replacement ESD from its protective package until you are ready to install it.
Most replacement ESDs are packaged with leads that are electrically shorted together by conductive foam,
aluminum foil or other conductive materials.
7. Immediately before removing the protective material from the leads of a replacement ESD, touch the protective
material to the chassis or circuit assembly into which the device will be installed.
8. Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes
together, or lifting a foot from a carpeted floor can generate enough static electricity to damage an ESD.
1-4 Samsung Electronics
Product Specification
2. Product Specification
2-1 Product Feature
USB Host
- Instant Entertainment through USB
- Directly rip the music in our CD’s to your USB external device
- MTP type file is also ready for play
Playability
- Never fail, Play without trouble. Just press play and enjoy
- Rolling actuator technology adjusts the lens angle to the curved disc surface
- Defect Disc Recovery Solution can deliver a clear picture despite of scratches or other defects on the disc.
Touch Sensor
- Emotional values by using the touch sensor button
Portable Connection
- Easy Connectivity
- Walkman, ipod, MD etc. DRM Free
- Connect with any kinds of Portable Audio device
- Stereo Input in Front
Samsung Electronics 2-1
Product Specification
2-2 Specifications
2-2-1
Specications
Basic Specification
Weight 2.6 Kg
General
FM Tuner
DISC
Dimensions 430 (W) x 60 (H) x 290 (D) mm
Operating Temperature Range
Operating Humidity Range
Signal/noise ratio
Usable sensitivity
Total harmonic distortion
DVD (Digital Versatile Disc)
CD: 12 cm
(COMPACT DISC)
CD: 8 cm
(COMPACT DISC)
+5°C ~ +35°C
10% to 75%
70 dB
10 dB
0.5 %
Reading Speed: 3.49 ~ 4.06 m/sec.
Approx. Play Time (Single Sided, Single Layer Disc):
135 min.
Reading Speed: 4.8 ~ 5.6 m/sec.
Maximum Play Time: 74 min.
Reading Speed: 4.8 ~ 5.6 m/sec.
Maximum Play Time: 20 min.
VIDEO
OUTPUT
VIDEO/
AUDIO
AMPLIFIER
Composite Video
Component Video
HDMI 1080p, 1080i, 720p, 480p(576p)
Front speaker output
Center speaker output
Rear speaker output
Subwoofer output
Frequency range
S/N Ratio
Channel separation
480i(576i)
1 channel: 1.0 Vp-p (75Ω load)
480i(576i)
Y: 1.0 Vp-p (75Ω load)
Pr: 0.70 Vp-p (75Ω load)
Pb: 0.70 Vp-p (75Ω load)
141W x 2 (3Ω)
141W (3Ω)
141W x 2 (3Ω)
145W (3Ω)
20Hz ~ 20kHz
70dB
60dB
Input sensitivity
2-2 Samsung Electronics
(AUX) 400mV
HT-C460 Speaker Specification
Product Specification
SPEAKER
Speaker system
Impedance
Frequency range
Output sound pressure level
Rated input
Maximum input
Dimensions (W x H x D)
Weights
5.1ch Speaker System
Front/Rear Center Subwoofer
3Ω 3Ω 3Ω
140Hz ~ 20KHz 140Hz ~ 20KHz 40Hz ~ 160Hz
86dB/W/M 86dB/W/M 88dB/W/M
141W 141W 145W
282W 282W 290W
Front : 90 x 141.5 x 68.5 mm
Rear : 84 x 104.5 x 68.5 mm
Centre : 360 x 74.5 x 68.5 mm
Subwoofer : 155 x 350 x 285 mm
Front: 0.58 Kg, Centre : 0.57 Kg
Rear : 0.4 Kg, Subwoofer : 3.8 Kg
Samsung Electronics 2-3
Product Specification
2-3 Specifications Analysis
Model Name HT-C460 HT-Z320
Photo
Output
Power
General
RMS (10% THD), REF: 1ch
Front: 141W x 2 (3Ω)
Output Power (ch)
HDMI CEC
Calliope X X
Deck 1 DISC 1 DISC
DVD Disc Capacity
Front Display
Sleep
Dimmer
CD/CD-R/CD-RW
VCD/SVCD X X
DVD/DVD-R/DVD-RW
MP3
Rear: 141W x 2 (3Ω)
Subwoofer: 145W (3Ω)
850W 1000W
Front: 166W x 2 (3Ω)
Center: 141W (3Ω)
1 DVD 1 DVD
1Color-VFD 1Color-VFD
Center: 166W (3Ω)
Rear: 166W x 2 (3Ω)
Subwoofer: 170W (3Ω)
Compatible
A/V
DVD (Video)
JPEG Viewer
DVD-Audio X X
DVD-OK X X
WMA
DIVX
SACD X X
WIRELESS
USB HOST
Anynet Anynet+ Anynet+
Progressive Scan (NT/PAL)
Logo copy
NTSC ↔ PAL
PAL M (Brazil)
Divx3.11~Divx5.1, XviD Divx3.11~Divx5.1, XviDi
X (JUST ONLY Brazil : )
V1/V2/V3/V7 V1/V2/V3/V7
O (only NTSC) O (only NTSC)
X X
: Feature Included, X: Not Included
2-4 Samsung Electronics
Product Specification
Model Name HT-C460 HT-Z320
Photo
Sound Mode EQ/DSP 3Mode / 5Mode 3Mode / 5Mode
Sound effect
Audio
Decoding
Video Inputs
MP3ENHANCE/P.BASS O
Dolby Digital
Dolby ProLogic-II
Dolby ProLogic-IIX
DTS O O
Dolby Digital EX
DTS ES Discrete 6.1
DTS 96/24
THX
DTS Neo 6
Component
Composite
S-Video
HDMI In
Component
O O
O O
X X
X X
X X
X X
X X
X X
X X
X X
X X
X X
O O
X
Video Outputs
Audio in/out
Optical jack
Coaxial jack
Composite
HDMI Out
S-Video
SCART Adaptor O (only Europe) O (only Europe)
In
Line In O (AUX) O (AUX)
Multi ch Out
Out
In (Digital In)
Out
In
Out
i-Link
O O
O O
X X
X X
X X
X X
O (*1) O (*1)
X X
X X
X X
X X
: Feature Included, X: Not Included
Samsung Electronics 2-5
Product Specification
Model Name HT-C460 HT-Z320
Photo
Headphone/
MIC Jack
Tuner
Remote Key
Speaker
Net Weight
Headphone Jack (3.5Φ)
X O
2 MIC Jack (6.5Φ) O (only MIC BUYER) O (only MIC BUYER)
FM O O
RDS X O (only Europe)
AM O (Brazil only) X
Preset Memory
Universal (MBR)
15 15
O O
Key 49 Key 60 Key
Dual Voltage
Type (Sat/Tallboy)
O (Brazil only) X
Sat Sat
Stand O O
Impedance (Sat/Woofer)
Active (Powered) S/W
3Ω/3Ω 3Ω/3Ω
X X
Set 5.73 Ibs 7.7 Ibs
: Feature Included, X: Not Included
2-6 Samsung Electronics
2-4 Accessories
2-4-1 Supplied Accessories
Accessories Item Item code Remark
Product Specification
Remote Control
Battery
Vidio Cable AH39-40001V
FM Antenna AH42-00021A
User’s Manual AH68-02268S
HDMI Cable MF39-00299A
AH83-00066C
4301-000121
Local Samsung Dealer
Samsung Electronics 2-7
MEMO
2-8 Samsung Electronics
Disassembly & Reassembly
X
3. Disassembly & Reassembly
3-1 Overall Disassembly & Reassembly
- Be careful to follow the disassembly sequence described in the manual. Otherwise, the product
may be damaged.
- Be sure to carefully read and understand the safety instructions before performing any work as
the IC chips on the PCB are vulnerable to static electricity.
- In order to assemble reverse the order of disassembly.
No. Description Description Photo
1 1) Side 2 points and rear 3 point screws uncrew.
2 1) Screws 3 point and wire seperation.
Samsung Electronics 3-1
3-2 Samsung Electronics
Disassembly & Reassembly
No. Description Description Photo
3 1) Pull out the wire from cabinet-front and main.
4 1) Pull out the cabinet-front.
5 1) Pull out the wire between PCB.
Disassembly & Reassembly
No. Description Description Photo
6 1) Uncrew the screws on the PCB.
2) Uncrew the screws on the SMPS PCB.
7 1) Uncrew the rear screws.
8 1) Disassemble complete.
ONLY DUAL SMPS
Samsung Electronics 3-3
MEMO
3-4 Samsung Electronics
4. Troubleshooting
4-1 Checkpoints by Error Mode
4-1-1 Main Power
No power detected
(Stand by LED off)
Troubleshooting
FR1 is OK?
Yes
CON3 Pin 12, 13, 14 is 5.4V?
Check Main PCB
No
No
Change fuse
ICFB5401 Pin 1 is 2.5V
Check Main PCB
No
Change SMPS.
Samsung Electronics 4-1
Troubleshooting
4-1-2 No Sound
No Sound
Check jack Input.
Check JA5 input signals.
Refer to wave pattern
image of Fig. 4-1.
Check AIC4, AIC19 input signals
(AC54, AC55, AC56,
AC1, AC2, AC3)
Refer to wave pattern
image of Fig. 4-2 and
Fig. 4-3.
Check MPEG DAC output
(1.7v offset) (pin 83, 84, 85, 88, 89, 90
of IC10 ES8398)
1
(1khz signal)
No
2
No
3
Check AMP input.
Check MPEG Ouput.
Yes
Yes
Yes
Check speakers.
(speaker change)
Replace AMP IC.
(AIC4, AIC19)
Check DAC output signal lines
between IC10 and AIC4 and
AIC19
Refer to wave pattern
image of Fig. 4-4.
Check DAC3.3V of IC10
Check Power Lines.
(Check IC36).
No
(pin 86)
No
Check MPEG DAC
Power.
Yes
Replace IC10.
4-2 Samsung Electronics
Troubleshooting
A_GND
3.3KOHM
1/16W
FAN_CHK
10OHM
C330
16V
1UF
5267-02A
1SS355-TE-17
2
1/16W
10V
10UF
R504
IC35
C313
16V
18KOHM
S4560
1/16W
R501
A_GND
R502
33KOHM
1/16W
6
5
3
1
10UF
+12V
4.7KOHM
R503
4
LHPR13
4.7KOHM
LHPC7
1/16W
50V
680PF
S4560
6
5
2
LHPR14
220UH
1/16W
VAA+5V
8
LHPC9
10UF
1/16W
10KOHM
A_GND
100PF
50V
LHPC12
LHPR15
100PF
50V
LHPC13
7
IC32
LHPC11
22UF
LHPL1
R516
R515
R514
2
1
CN12
C320
R500
8
7
D34
LHPR16
LHPL2LHPR18
LHPR17
LHPC10
4
3
1
LHPC8
1W
6.3V
33OHM
220UH
A_GND
25V
1/16W
1/16W
47KOHM
A_GND
+12V
33OHM
1/16W
50V
27OHM
+12V
1/2W
15KOHM
1/16W
1/16W
33KOHM
22UF
4.7KOHM
10KOHM
1/16W
A_GND
6.3V
1NF
IN2+
VEE
OUT2
VCC
IN2-
IN1+
IN1-
OUT1
EBC
IN2+
VEE
OUT2
VCC
IN2-
IN1+
IN1-
OUT1
ACON1
1
AMP, page 7-8
1
1
MAIN PCB Top, page 6-8
<Fig. 4-1>
Samsung Electronics 4-3
IC11
CN1
CN2
AIC4
AIC19
Troubleshooting
2
AUDIO AMP-2, page 7-10
2
2
MAIN PCB Top, page 6-8
<Fig. 4-2>
4-4 Samsung Electronics
AIC19
CN5
ACON1
2
Troubleshooting
AUDIO AMP-3, page 7-11
2
2
MAIN PCB Top, page 6-8
<Fig. 4-3>
Samsung Electronics 4-5
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