Samsung HTZ-420, HTZ-320-T Service manual

Digital Home Cinema System

Model Name : HT-Z320 / HT-Z420 Model Code : HT-Z320T/XAA HT-Z420T/XAA

Speaker PS-Z320 PS-Z420

Front PS-FZ320 PS-FZ420

Center PS-CZ320 PS-CZ420

Rear PS-RZ320 PS-RZ420

Subwoofer PS-WZ320 PS-WZ420

SERVICE

Manual

Digital Home Cinema System

HT-Z320

CONTENTS

1. Precaution

2. Product Specification

3. Disassembly & Reassembly

4. Troubleshooting

5. Exploded View & Part List

6. PCB Diagram

7. Schematic Diagram

HT-Z420

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.

Printed in Korea

Apr. 2009

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

2-3

2-8

2-10

4. Troubleshooting

4-1 Checkpoints by Error Mode.............................................................................. 4-2

4-2 Measures to be taken when the Protection Circuit operates ...........................

4-3 Initialization & Upgrade Methods .....................................................................

4-4 Buyer-Region Code Setting Method ................................................................

5. Exploded View & Part List

5-1 HT-Z320T/XAA Exploded View ........................................................................5-2

5-2 HT-Z420T/XAA Exploded View ........................................................................

5-3 HT-Z320 Speaker System ................................................................................

5-4 HT-Z420 Speaker System ................................................................................

5-5 HT-Z320T/XAA Electrical Part List ...................................................................

5-6 HT-Z420T/XAA Electrical Part List ...................................................................

4-25

4-27

4-30

5-4

5-6

5-7

5-8

5-22

Contents

6. PCB Diagram

6-1 Wiring Diagram ................................................................................................6-2

6-2 FRONT PCB Top ..............................................................................................

6-3 FRONT PCB Bottom ........................................................................................

6-4 TOUCH PCB Top .............................................................................................

6-5 TOUCH PCB Bottom ........................................................................................

6-6 BLUETOOTH PCB Top (US exception) ...........................................................

6-7 BLUETOOTH PCB Bottom (US exception) ......................................................

6-8 MAIN PCB Top .................................................................................................

6-9 MAIN PCB Bottom ...........................................................................................

6-10 SMPS PCB Top ................................................................................................

6-11 SMPS PCB Bottom ..........................................................................................

7. Schematic Diagram

6-3

6-5

6-6

6-7

6-9

6-11

6-12

6-15

6-16

6-18

7-1 Overall Block Diagram .....................................................................................7-2

7-2 FRONT .............................................................................................................

7-3 TOUCH ............................................................................................................

7-4 BLUETOOTH (US exception) ..........................................................................

7-5 MPEG

7-6 MICOM .............................................................................................................

7-7 HDMI ................................................................................................................

7-8 AV I/O PART .....................................................................................................

7-9 AMP .................................................................................................................

7-10 SMPS ...............................................................................................................

...............................................................................................................7-6

7-3

7-4

7-5

7-7

7-8

7-9

7-10

7-11

2. Product Specification

2-1 Product Feature

2-1-1 HT-Z320 Product Feature

 1000W Power

 HDMI w/ 1080p up-scale

 Playability

 ASC (Auto Sound Calibration)

 DNSe – Power Bass

 iPod Dock (US Only)

Product Specification

 Wireless Rear

 Bluetooth

(The United States Bluetooth exclusion.)

 USB Host w/ CD Ripping

 KELP Cone Center Speaker

 Touch Sensor Button

 Variation

• HT-TZ325: 4 Tall Speaker

Samsung Electronics 2-1

Product Specification

2-1-2 HT-Z420 Product Feature

 1000W Power

 HDMI w/ 1080p up-scale

 Playability

 ASC (Auto Sound Calibration)

 DNSe – Power Bass

 iPod Dock (US Only)

 Wireless Rear

 Bluetooth

(The United States Bluetooth exclusion.)

 USB Host w/ CD Ripping

 KELP Cone Center, Front Speaker

 Touch Sensor Button

 Variation

• HT-TZ422: 2 Tall Speaker

2-2 Samsung Electronics

2-2 Specifications

 Basic Specification

Product Specification

General

Disc

Video

Output

Power Consumption

Weight 3.5 kg

Dimensions 430 (W) x 70 (H) x 282 (D) mm

Operating Temperature Range

Operating Humidity Range

DVD (Digital Versatile Disc)

CD: 12 cm (COMPACT DISC)

CD: 8cm (COMPACT DISC)

Composite Video

Component Video

75 W

+5°C ~ +35°C

10 % to 75 %

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.

576i/480i

1 channel: 1.0 Vp-p (75 Ω load)

576i/480i

Y: 1.0 Vp-p (75 load)

Pr: 0.70 Vp-p (75 Ω load)

Video/

Audio

Amplifier

HDMI OUT

HDMI IN

Front speaker output

Center speaker output

Rear speaker output

Subwoofer speaker output

Frequency range

S/N Ratio

Channel separation

Input sensitivity

Pb: 0.70 Vp-p (75 Ω load)

1080p, 1080i, 720p, 576p/480p

1080p, 1080i, 720p, 576p/480p (If source support it)

166W x 2 (3Ω)

166W (3Ω)

166W x 2 (3Ω)

170W (3Ω)

20Hz ~ 20KHz

70dB

60dB

(AUX) 400mV

Samsung Electronics 2-3

Product Specification

 SWA-4100 Specification (HT-Z420 / TZ422 / TZ425)

Power Consumption 50 W

Weight 1.3 Kg

Dimensions (W x H x D)

Operating Temperature Range

Operating Humidity Range

Output 166W x 2

Frequency range

S/N Ratio

76 x 256 x 175 mm

+5°C ~ +35°C

10% ~ 75%

20Hz ~ 20KHz

75dB

 HT-Z320 Speaker Specification

Speaker

Speaker system

Impedance 3Ω 3Ω 3Ω

Frequency range

Output sound pressure level

Rated input

Maximum input

Front/Rear Center Subwoofer

140Hz ~ 20KHz 140Hz ~ 20KHz 45Hz ~ 160Hz

86dB/W/M 86dB/W/M 86dB/W/M

5.1ch speaker system

166W 166W 170W

332W 332W 340W

Dimensions (W x H x D)

Weights

Front/Rear: 100 x 150 x 89 mm

Center: 300 x 59 x 50 mm

Subwoofer: 180 x 320 x 380 mm

Front: 0.5 kg, Center: 0.6 kg

Rear: 0.4 kg, Subwoofer: 4.5 kg

2-4 Samsung Electronics

 HT-Z322 Speaker Specification

Product Specification

Speaker system

Impedance 3Ω 3Ω 3Ω

Frequency range

Output sound pressure level

Rated input

Speaker

Maximum input

Dimensions (W x H x D)

Weights

 HT-Z325 Speaker Specification

Speaker system

5.1ch speaker system

Front/Rear Center Subwoofer

140Hz ~ 20KHz 140Hz ~ 20KHz 45Hz ~ 160Hz

86dB/W/M 86dB/W/M 86dB/W/M

166W 166W 170W

332W 332W 340W

Front: 240 x 1020 x 240 mm (Stand Base: 240 x 240)

Rear: 100 x 100 x 93 mm

Center: 300 x 59 x 50 mm

Subwoofer: 180 x 320 x 380 mm

Front: 2.8 kg, Center: 0.6 kg

Rear: 0.4 kg, Subwoofer: 4.5 kg

5.1ch speaker system

Front/Rear Center Subwoofer

Speaker

Impedance 3Ω 3Ω 3Ω

Frequency range

Output sound pressure level

Rated input

Maximum input

Dimensions (W x H x D)

Weights

140Hz ~ 20KHz 140Hz ~ 20KHz 45Hz ~ 160Hz

86dB/W/M 86dB/W/M 86dB/W/M

166W 166W 170W

332W 332W 340W

Front/Rear: 240 x 1026 x 240 mm (Stand Base: 240 x 240)

Center: 300 x 59 x 50 mm

Subwoofer: 180 x 320 x 380 mm

Front: 2.8 kg, Center: 0.6 kg

Rear: 2.6 kg, Subwoofer: 4.5 kg

Samsung Electronics 2-5

Product Specification

 HT-Z420 Speaker Specification

Speaker system

Impedance 3Ω 3Ω 3Ω

Frequency range

Output sound pressure level

Rated input

Speaker

Maximum input

Dimensions (W x H x D)

Weights

 HT-Z422 Speaker Specification

Speaker system

5.1ch speaker system

Front/Rear Center Subwoofer

140Hz ~ 20KHz 140Hz ~ 20KHz 45Hz ~ 160Hz

86dB/W/M 86dB/W/M 86dB/W/M

166W 166W 170W

332W 332W 340W

Front: 100 x 210 x 99 mm

Rear: 101 x 151 x 88 mm

Center: 300 x 57 x 48 mm

Subwoofer: 180 x 320 x 380 mm

Front: 0.6 kg, Center: 0.9 kg

Rear: 0.5 kg, Subwoofer: 4.5 kg

5.1ch speaker system

Front/Rear Center Subwoofer

Speaker

Impedance 3Ω 3Ω 3Ω

Frequency range

Output sound pressure level

Rated input

Maximum input

Dimensions (W x H x D)

Weights

140Hz ~ 20KHz 140Hz ~ 20KHz 45Hz ~ 160Hz

86dB/W/M 86dB/W/M 86dB/W/M

166W 166W 170W

332W 332W 340W

Front: 260x 1202 x 260 mm (Stand Base: 260 x 260)

Rear: 101 x 151 x 88 mm

Center: 300 x 57 x 48 mm

Subwoofer: 180 x 320 x 380 mm

Front: 3.0 kg, Center: 0.9 kg

Rear: 0.5 kg, Subwoofer: 4.5 kg

2-6 Samsung Electronics

 HT-Z425 Speaker Specification

Product Specification

Speaker

Speaker system

5.1ch speaker system

Front/Rear Center Subwoofer

Impedance 3Ω 3Ω 3Ω

Frequency range

Output sound pressure level

Rated input

Maximum input

140Hz ~ 20KHz 140Hz ~ 20KHz 45Hz ~ 160Hz

86dB/W/M 86dB/W/M 86dB/W/M

166W 166W 170W

332W 332W 340W

Front/Rear: 260 x 1202 x 260 mm (Stand Base: 260 x 260)

Dimensions (W x H x D)

Center: 300 x57x 48 mm

Subwoofer: 180 x 320 x 380 mm

Weights

Front: 3.0 kg, Center: 0.9 kg

Rear: 3.0 kg, Subwoofer: 4.5 kg

Samsung Electronics 2-7

Product Specification

2-3 Specifications Analysis

Model Name HT-Z320 HT-Z420 HT-Z310

Photo

Output

Power

General

Compatible

A/V

Extra

Features

DVD (Video)

Sound Mode

DNSe

RMS (10% THD), REF: 1CH

Output Power (ch)

HDMI CEC

Deck 1 1 1

DVD Disc Capacity

Front Display

Sleep

Dimmer

CD/CD-R/CD-RW

VCD/SVCD Area specification Area specification X

DVD/DVD-R/DVD-RW

MP3

JPEG Viewer

DVD-OK X X  (CIS only) / No Disc&Mic

WMA

DIVX

i-Pod Dock

Wireless Ready

Wireless Rear

Wireless Subwoofer

Wireless Video

USB HOST

Bluetooth

Progressive Scan (NT/PAL)

NTSC ↔ PAL X X  (Except USA)

PAL M (Brazil)

EQ/DSP 3 Mode / 5 Mode 3 Mode / 5 Mode 3 Mode / 5 Mode

DNSe 2.1

ASC

Smart Volume

Audio Upscale

Power Bass

(Active Subwoofer: 170W)

1000W 1000W 1000W

166W x 5

  

1 DVD 1 DVD 1 DVD

1Color - VFD X 1Color - VFD

  

 (US only)  (US only)  (US, CSA only)



X X X

  

X - USA

 - Canada

X X X

  

X X X

 

X X X

  

166W x 5

(Active Subwoofer: 170W)



X - USA

 - Canada

166W x 5

(Active Subwoofer: 170W)



 : application, X: non-application

2-8 Samsung Electronics

Product Specification

Model Name HT-Z320 HT-Z420 HT-Z310

Photo

Dolby Digital

Dolby Digital Plus

Dolby True HD

Dolby ProLogic-II

Audio

Decoding

Video Inputs

Video

Outputs

Audio In/Out

Optical Jack

Coaxial Jack

Headphone/

MIC Jack

Tuner

Remote Key

Speaker Type (Sat/Tallboy) Satellite Satellite Satellite

Net Weight

(Kg)

Dolby ProLogic-IIx

Dolby Digital EX

DTS

DTS-HD (HR/MA)

DTS ES Discrete 6.1

DTS 96/24

DTS Neo 6

Component X X X

Composite X X X

HDMI In

Component

Composite

HDMI Out (CEC)

SCART Out (Only Euro, CIS)

Line In

Multi ch Out

Out X X X

In (Digital In)

Out X X X

In X X X

Out X X X

Headphone Jack

1 ASC MIC

MIC Jack

RDS X X  (EU, CIS only)

Preset Memory

Universal (MBR)

Key 59 Key 59 Key 58 Key

Dual Voltage

Set 3.2 3.2 3.6

HIGH, LOW, DUAL Voltage HIGH, LOW, DUAL Voltage HIGH, LOW, DUAL Voltage

  

X X

X X X

  

X X X

  

X X X

 

  

X X X

AUX1 AUX1 AUX1

AUX2 AUX2 AUX2

X X X

  

 

X X  (US only)

  

X X X

15 15 15

X X X



 : application, X: non-application

Samsung Electronics 2-9

Product Specification

2-4 Accessories

2-4-1 HT-Z320 Supplied Accessories

Accessories Item Item code Remark

Remote Control

Batteries

iPod Dock Package AH96-00051A

ASC microphone AH30-00099A

Video Cable AH39-40001V

FM Antenna AH42-00017A

AH59-02131F

4301-000116

Samsung Service Center

User’s Manual AH68-02166R

2-10 Samsung Electronics

2-4-2 HT-Z420 Supplied Accessories

RESET

Accessories Item Item code Remark

Product Specification

Remote Control

Batteries

AH59-02131F

4301-000116

iPod Dock Package AH97-02650C

ASC microphone AH30-00099A

Video Cable AH39-40001V

FM Antenna AH42-00017A

User’s Manual

AH68-02166R

AH68-02168R

Samsung Service Center

 SWA-4100 (HT-Z420 / TZ422 / TZ425)

Accessories Item Item code Remark

Wireless Receiver

Module

Tx Card AH40-00149A

Speaker Cable - 2EA AH81-02137A

Samsung Electronics 2-11

AH97-03207A

Samsung Service Center

MEMO

2-12 Samsung Electronics

Precaution

1. Precaution

Follow these safety, servicing and ESD precautions to prevent damage and protect against potential hazards such

as electrical shock and X-rays.

1-1 Safety Precautions

1. Be sure that all of the built-in protective devices are replaced.

2. When reinstalling the chassis and its assemblies, be sure to restore all protective devices, including control

knobs and compartment covers.

3. Make sure that there are no cabinet openings through which people--particularly children--might insert fingers

and contact dangerous voltages. Such openings include the spacing between the picture tube and the cabinet

mask, excessively wide cabinet ventilation slots, and improperly fitted back covers.

4. 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.

5. 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 line

cord directly into a 120V AC outlet. With the unit’s AC

switch first in the ON position and then OFF, measure

the current between a known earth ground (metal water

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)

EARTH

GROUND

pipe, etc.) and all exposed metal parts. Examples:

Handle brackets, metal cabinets, screwheads and control shafts. The current measured should not exceed 0.5

milliamp. Reverse the powerplug prongs in the AC outlet and repeat.

6. 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 metallic parts.

Example: Screwheads, antenna, control shafts or handle

brackets.

Exposed

Metal Part

ohm

Ohmmeter

<Fig. 1-2 Insulation Resistance Test>

If any of the exposed metallic parts has a return path

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

7. 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

8. 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.

9. 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.

10. 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 and turn the power switch ON.

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)

1. 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.

2. 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.)

3. After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent

accumulation of electrostatic charge.

4. Do not use freon-propelled chemicals. These can generate electrical charges that damage ESDs.

5. Use only a grounded-tip soldering iron when soldering or unsoldering ESDs.

6. 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).

7. 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.

8. 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.

9. Minimize body motions when handing 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

Disassembly & Reassembly

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.

- Assemble in the reverse order of disassembly.

No. Part Name Description Description Photo

1 COVER-TOP 1) Unscrew the 2 screws from the Left

and Right Side.

: TAP TITE SCREW BH 3*10 BLACK

2) Unscrew the 3 screws from the Rear.

: TAP TITE SCREW BH 3*10 BLACK

3) Lift the Top-Cover to separate it.

Be careful not to make any

scratches as you remove it.

<Right-Side>

<Left-Side>

Samsung Electronics 3-1

3-2 Samsung Electronics

Disassembly & Reassembly

No. Part Name Description Description Photo

2 DECK 1) Remove the DECK.

Remove the 3 screws and wire.

: TAP TITE SCREW BH 3*25 SILVER

CABINET

FRONT

1) Remove the wires connected to the

CABINET FRONT.

In case of pulling up the PCB

cable, it is easier to pull up when

pressing the grip.

2) Lift and pull out the CABINET

FRONT.

4 PCB 1) Remove the wires between PCB.

In case of pulling up the PCB

cable, it is easier to pull up when

pressing the grip.

2) Remove the 7 screws on the PCB.

: TAP TITE SCREW BH 3*6 SILVER

Disassembly & Reassembly

No. Part Name Description Description Photo

CABINET-

BOTTOM

REAR

1) Remove the remaining 4 screws in

the CABINET-BOTTOM REAR.

: TAP TITE SCREW BH 3*10 BLACK

6 SET 1) Picture of a disassembled product.

Samsung Electronics 3-3

MEMO

3-4 Samsung Electronics

Troubleshooting

4. Troubleshooting

4-1 Checkpoints by Error Mode ................................................................4-2

4-2 Measures to be taken when the Protection Circuit operates ...........

4-3 Initialization & Upgrade Methods ........................................................

4-4 Buyer-Region Code Setting Method ...................................................

4-25

4-27

4-30

Samsung Electronics 4-1

Troubleshooting

4-1 Checkpoints by Error Mode

4-1-1 Power Failure

The power does not turn on.

5.8V output check

(COM3, Pin 1, 2) → 5.8V?

Check input voltage of IC5601

kathode of DR5601 → 6 ~ 16V?

Yes

Check diodes (DR5601, DR3502)

→ OK?

Yes

Check Main Assy

- specially check around MICOM IC (Vcc)

Replace IC5601

Replace Diode

Check primary side.

Fuse (F1) → OK?

Yes

Replace Fuse (6.3A 250V)

4-2 Samsung Electronics

Troubleshooting

Check SWITCHING IC (IC01)

short test pin 8 to pin 1, 2, 3, 4, 5, 6, 7 → OK

(means not short)?

Check M01.

All pins are not shorted to each other.

Yes

Check components around IC.

R13, R14, D06, D07, D05

Yes

Replace IC01

Replace M01

Replace component if it has problem.

Replace SMPS ASSY

Samsung Electronics 4-3

Troubleshooting

4-1-2 No Sound (waveform when 1KHz, -20dB signal is input)

No Sound

Check ADC input.

AIC1 CS5345

AUX1: pin 21, 22

AUX2: pin 7, 8

TUNER: pin 11, 12

IPOD: pin 26, 27

Yes

 Refer to wave pattern

image of Fig. 4-1.

Check the audio input of each

component including connector

connectivity.

Check ADC output.

AIC1 CS5345

pin 41: SDOUT

pin 42: SCLK

pin 43: LRCLK

pin 44: MCLK

 Refer to wave pattern

Yes

Check the outputs of the pin 65,

66, 67 of MIC1 (ES8391).

Yes

image of Fig. 4-1.

Check MPEG input.

 Refer to wave pattern

image of Fig. 4-2.

Check if the

D5V of LOADSW is measured

at the pin of 7, 8 and check if the 3.3V

of DDC1 is measured at the

pin of 7, 8.

Yes

Replace the DDC1.

Check the VD33 and

VDD1.2 is measured at the pin 62,

77, 79 of MIC1.

Yes

Check if the pin 5 and 6 of

CON3 of SMPS are 12V.

Check if the pin 1, 2 of CON3

is 5V.

Replace of the MIC1.

Check if the pin 7 and 8 of

DDC1 ic are 3.3V.

4-4 Samsung Electronics

Troubleshooting

Check MPEG output

and connecor

connectivity.

Check the singnal

output is measured at

pin 11, 12, 15, 16, 17, 18 of

PWMIC1 (PS9829B).

 Refer to wave pattern

image of Fig. 4-3.

Yes

Check the PWM

output.

Check if the

outputs of the pin 48, 49, 51,

52, 54, 55, 58, 59, 61, 62, 67, 68, 70,

71, 74, 75 of PWMIC1 PS9829B

of the MAIN PCB

are measured.

 Refer to wave pattern

Yes

image of Fig. 4-4-1 and Fig. 4-4-2.

Check the pattern or Parts

between MIC1 and PWMIC1.

(ex: soldering mistake, parts

missed)

Check if

the VDD 3.3V of PWMIC1

is measured at of the pin 4,

10, 22, 29.

Yes

Replace the PWMIC1.

Check if the pin 7 and 8 of

DDC1 is 3.3V.

Replace the DDC1 IC.

Samsung Electronics 4-5

Troubleshooting

Check the AMP IC

output.

Check if the outputs

of the pin 28, 31, 36 and 39 of

IC1CW, IC1L and IC1R of the TAS5352

of the MAIN PCB are

measured.

 Refer to wave pattern

Yes

Check if the outputs of the

SPK1 of AMP PCB are

measured.

image of Fig. 4-4-1 and Fig. 4-4-2.

Check the SPK output.

 Refer to wave pattern

image of Fig. 4-5.

Check if GVDD

of TAS5352 is measured at

the pin 1, 22, 23. Check if PVDD of

TAS5352 is measured at the

pin 26, 27, 32, 35, 40,

41.

Yes

Replace the TAS5352.

Check if the GVDD of pin 1 of

J3 is 12V.

Check if the PVDD of pin 7, 8,

9 of J3 are 35V.

Replace the SPK1 connectors.

4-6 Samsung Electronics

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