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

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Page 1

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.

Page 2

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

Page 3

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

Page 4

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

Page 5

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

Page 6

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

Page 7

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

Page 8

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

Page 9

 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

Page 10

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

Page 11

 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

Page 12

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

Page 13

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

Page 14

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

Page 15

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

Page 16

MEMO

2-12 Samsung Electronics

Page 17

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

Page 18

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.

Page 19

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

Page 20

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

Page 21

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

Page 22

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

Page 23

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

Page 24

MEMO

3-4 Samsung Electronics

Page 25

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

Page 26

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

Page 27

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

Page 28

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

Page 29

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

Page 30

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

Page 31

Troubleshooting

IC31

HDJ1

CN10

AIC1

5 2

4 3

 AV I/O PART, page 7-9

 MAIN PCB Top, page 6-10

<Fig. 4-1>

Samsung Electronics 4-7

Page 32

Troubleshooting

MIC1

MIC2

CN10

AIC1

MIC10

MIC3

MIC6

MIC5

VIC1

 MPEG, page 7-6

 MAIN PCB Top, page 6-10

<Fig. 4-2>

4-8 Samsung Electronics

Page 33

IC31

IJACK

MCON15

HDJ1

MIC1

PWMIC1

Troubleshooting

879

 MICOM, page 7-7

 MAIN PCB Top, page 6-10

<Fig. 4-3>

Samsung Electronics 4-9

Page 34

Troubleshooting

<Fig. 4-4-1>

 AMP, page 7-10

4-10 Samsung Electronics

Page 35

IC31

CEIC1

MCON2

IJACK

MCON15

HDJ1

MIC1

DDC1

DIIC1

LOADSW

SIC1

PWMIC1

UIC1

IC1L IC1CW IC1R

MCON1

Troubleshooting

 MAIN PCB Top, page 6-10

<Fig. 4-4-2>

Samsung Electronics 4-11

Page 36

Troubleshooting

IJACK

MCON15

HDJ1

 AMP, page 7-10

 MAIN PCB Top, page 6-10

<Fig. 4-5>

4-12 Samsung Electronics

Page 37

4-1-3 No Analog Video Output

 COMPOSIT (VIDEO OUT)

COMPOSIT (VIDEO OUT)

Check MPEG output.

Troubleshooting

Check if VDAC

output is measured at the pin 100 of

MIC1 ES8391.

 Refer to wave pattern

Yes

Check if output

is measured at the pin 33 of

VIC1 LA73054.

Yes

image of Fig. 4-6.

Check Video Switch.

Check if VDD of

3.3V is measured at the pin 1, 14, 30, 46, 62, 77 of MIC1.

Yes

Replace the MIC1 IC.

Check if VDD

of 5V is measured at the pin 1, 24,

34 of VIC1.

Yes

Check if the pin 7 and 8 of

DDC1 is 3.3V.

Replace the DDC1 IC.

Check JACK output.

Check if composite video

output is measured at the VJ4.

 Refer to wave pattern

image of Fig. 4-7.

Check the VJ4 connectivity

and replace it if necessary.

Replace the VIC1.

Check if the pin 7 and 8 of

LOADSW1 is 5V.

Replace the DDC1 IC.

Samsung Electronics 4-13

Page 38

Troubleshooting

MIC1

MIC2

CN10

AIC1

MIC10

MIC3

MIC6

MIC5

VIC1

 MPEG, page 7-6

 MAIN PCB Top, page 6-10

<Fig. 4-6>

4-14 Samsung Electronics

Page 39

Troubleshooting

IC31

IJACK

MCON15

HDJ1

AIC1

 AV I/O PART, page 7-9

 MAIN PCB Top, page 6-10

Samsung Electronics 4-15

<Fig. 4-7>

Page 40

Troubleshooting

 COMPONENT (Y, Pb, Pr)

COMPONENT (Y, Pb, Pr)

Check MPEG output.

Check if

YDAC, CADC, and UDAC

outputs are measured at the pin 103,

104, and 105 of MIC1

ES8391.

 Refer to wave pattern

Yes

Check if

output is measured at the pin

21, 23, and 25 of VIC1

LA73054.

Yes

image of Fig. 4-8.

Check Video Switch.

 Refer to wave pattern

image of Fig. 4-9.

Check if the

VDD of 3.3V is measured at

the pin 1, 14, 30, 46, 62,

77 of MIC1.

Yes

Replace the MIC1 IC.

Check if VDD

of 5V is measured at the pin

of VIC1.

Yes

Check if the pin 7 and 8 of

DDC1 is 3.3V.

Replace the DDC1 IC.

Check JACK output.

Check if Component video

output is measured at the VJ4.

Check the VJ4 connectivity

and replace it if necessary.

Replace the VIC1.

Check if the pin 7 and 8 of

LOADSW1 is 5V.

Replace the DDC1 IC.

4-16 Samsung Electronics

Page 41

MIC1

MIC2

CN10

AIC1

MIC10

MIC3

MIC6

MIC5

VIC1

Troubleshooting

2 1

 MPEG, page 7-6

 MAIN PCB Top, page 6-10

<Fig. 4-8>

Samsung Electronics 4-17

Page 42

Troubleshooting

IC31

HDJ1

CN10

AIC1

MIC10

MIC3

MIC6

VIC1

 AV I/O PART, page 7-9

 MAIN PCB Top, page 6-10

4-18 Samsung Electronics

<Fig. 4-9>

Page 43

4-1-4 No HDMI Video Output

No HDMI Video Output

Check the HDMI signal

Troubleshooting

output.

Check the outputs of

the pin 33, 34, 35, 36, 37, 38, 39,

40, 89, 90, 91, 92 for HD_DATA and

pin 131 for HDMI_CLK of

MIC1 ES8391.

Yes

Check the outputs of the

pin 26, 27, 29, 30, 32, 33, 35, 36

of IC31 ES7108S.

Yes

 Refer to wave pattern

image of Fig. 4-10.

 Refer to wave pattern

image of Fig. 4-11.

Check if the

VDD of 3.3V is measured at

the pin 1, 14, 30, 46, 62,

77 of MIC1.

Yes

Replace the MIC1 IC.

Check if the VDD

3.3V of IC31 is measured

at the pin of 13, 28, 34, 48 and 71.

Check if the VDD 1.8V of IC31 is

measured at the pin of 16,

45, 59 and 74.

Yes

Check if the pin 7 and 8 of

DDC1 is 3.3V.

Replace the DDC1 IC.

Replace the IC31 IC.

Check the HDJ1 Output.

 Refer to wave pattern

image of Fig. 4-12.

Replace the jack.

Check the PIC7 output pin 2 for VDD1.8V and CEIC3

output pin 2 for 3.3V.

Samsung Electronics 4-19

Page 44

Troubleshooting

MIC1

MIC2

CN10

AIC1

MIC10

MIC3

MIC6

MIC5

VIC1

 MPEG, page 7-6

 MAIN PCB Top, page 6-10

<Fig. 4-10>

4-20 Samsung Electronics

Page 45

Troubleshooting

IC31

IJACK

MCON15

HDJ1

MIC1

 HDMI, page 7-8

 MAIN PCB Top, page 6-10

<Fig. 4-11>

Samsung Electronics 4-21

Page 46

Troubleshooting

IC31

IJACK

MCON15

HDJ1

 HDMI, page 7-8

 MAIN PCB Top, page 6-10

<Fig. 4-12>

4-22 Samsung Electronics

Page 47

4-1-5 DECK Failure

Power On

Disc Insert

Does disc spin stuck?

Yes,

Stuck

Please check

Main PCB and Deck

connection.

(CN01, CN02, CN03)

Troubleshooting

No,

Spin OK

How about Power Pin?

OK,

No Problem

How about Pickup

Power Reference (MVREF)?

No Problem

CD DVD

Check CD Signal

(MIC1 139pin DVD/CD)

OK,

CN03 14pin RF50V: 4.8V ~ 5V

Disc Judgment

Disc Inserted

DISC ERROR

MIC1 163pin VD33: 3.2V ~ 3.3V

RIC4 8pin MVCC: 4.8V ~ 5V

RIC4 19pin MVCC: 4.8V ~ 5V

MIC1 157pin MVREF: 2.0V ~ 2.1V

But

NO DISC

Please check

Reassemble

Main PCB and DECK

Different

Change

MAIN PCB or SMPS

Different

Check DVD Signal

(MIC1 139pin DVD/CD)

Not Like

This

 Refer to wave pattern

image of Fig. 4-13.

Change DECK

Not Like

This

 Refer to wave pattern

image of Fig. 4-13.

Samsung Electronics 4-23

Page 48

Troubleshooting

MIC1

MIC2

CN10

AIC1

MIC10

MIC3

MIC6

MIC5

VIC1

Check CD Signal

Check DVD Signal

Check CD Signal

Power On

Position

Check DVD Signal

Low

Active

 MPEG, page 7-6

Power On

Position

High

Active

 MAIN PCB Top, page 6-10

<Fig. 4-13>

4-24 Samsung Electronics

Page 49

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

4-2-1 Operation of Power Block Protection Circuit

The Condition of Power Protection Active.

1. Voltage of SMPS’s PVDD (+34.5V, J3) is higher or lower than Standards.

Normal Condition Voltage Range: PVDD (+34.5V, J3): about +34.5V

2. Over-current occurs to AMP IC. (Over-output or Output short)

3. AMP IC’s temperature exceeds 150°C.

4. No supply voltage on GATE DRIVER.

Troubleshooting

Z320/Z420

SMPS

Part

Location

CON3 +5.8V (1, 2)

CON2

Pin No.

PVDD (about 35V)

(1, 2, 3, 4)

+12V (11)

4-2-2 Power Protection

1. OTW

: Active, IC’s inner temperature exceeds over 150°C.

(Under 2.7V, Protection Circuit wills Active)

2. TAS5352 3

: Shout down (Under 2.7V, Protection Circuit wills Active)

Protection Circuit Operation

Open Short

X X

 



Remark

<Fig. 4-14>

Samsung Electronics 4-25

Page 50

Troubleshooting

4-2-3 Check Amp in Power Protection

You can check AMP Malfunction before disassembling Main Unit (Do NOT Insert AC-Cord in AC-Socket)

Resistance in using Tester

F/R CH 10kΩ

CENTER 10kΩ

SUBWOOFER 10kΩ

If Measured Resistance is very different from above numbers. There is a Problem. → AMP PCB Problem

5.1CH SPEAKER OUTPUT

GND

FRONT R FRONT L

CENTER SUBWOOFER

REAR R REAR L

4-26 Samsung Electronics

Page 51

4-3 Initialization & Upgrade Methods

4-3-1 MICOM Initialization & Update

 MICOM Initial

In STANBY condition, press 'STOP'button of the remote control more than 5 seconds.

STANBY RED LED will blink weakly. Then Initialization complete.

 MICOM Update

1. Prepare or Make a DISC-CD or DVD or USB that contains

“Z32HTSTX.SSP” file for update.

Troubleshooting

2. Play the DISC or USB, then “updating” will appear on the

screen, then Power will go out after showing 'complete' on the

screen.

3. Press “Stop” button of the remote control more than 5 seconds.

<Fig. 4-15 Connecting USB>

<Fig. 4-16 TV Display (On Updating)>

Samsung Electronics 4-27

Page 52

Troubleshooting

4-3-2 DVD flash Initialization & Update

 Checking out MICOM & MPEG flash Version

1. Open DISC-TRAY, Press "MENU" button on the Remote

Control.

2. Press "8", "9", "5" one by one, then press “ENTER”.

<Fig. 4-17 Version>

4-28 Samsung Electronics

Page 53

 DVD flash Initialization & Update (firmware)

1. Prepare or Making DISC-CD or DVD or USB that contains

‘Z32HTSTX.ROM’ file for Update.

2. Play the DISC or USB, then ‘Updating’ will appear on the

screen, then Power will go out and on.

3. Then DISC-TRAY will OPEN, then remove DISC or USB,

making Unit ‘NO DISC’ state.

4. Press ‘STOP’ button of Main Unit more than 5 seconds,

Display Indicator shows ‘INITIALIZE’ then Power goes out.

Troubleshooting

5. Initialization complete.

<Fig. 4-18 Connecting USB>

<Fig. 4-19 TV Display (On Updating)>

<Fig. 4-20 Update Start>

Samsung Electronics 4-29

Page 54

Troubleshooting

4-3 Buyer-Region Code Setting Method

4-3-1 The inserting method of Region Code after replacing the Main PBA

[Reference]

- When replacing the Main PBA and System Micom should be inserted the region code.

- The set is not working properly if you don't insert the region code.

- The region code is inserted by the remote control.

1. Press the “AUX” button on the remote control.

2. Press the "TUNER MEMORY" button on the remote control during

4~5 seconds.

3. After step (2), you can see “TEST” on the VFD.

4. When you see “TEST” on VFD, Insert number “3”, “3” to start

Region Code setting mode.

TEST

4-30 Samsung Electronics

Page 55

5. After step (4), you can see “− −” on the VFD.

Insert the Region Code (Below table) corresponding model with

“0 ~ 9” buttons on the remote control.

 Option Table

Area Region Code Remark

Africa / India / Pakistan… 00

Brazil 01

Canada 02

China (semi_mic) 03

Troubleshooting

− −

Europe 04

Indonesia / Hongkong… 05

Japan 06

Korea 07

Latin American 08

Mexico 09

Philippines 10

Russia (full_mic) 11

Russia (semi_mic) 12

South Africa / Israel / Iran… 13

Taiwan 14

USA 15

Australia / Newzealand 16

Full karaoke models which support midi file.

Only models which supporting semi-karaoke not including

midi file.

England 17

Australia (Z420 / 422 / 425) 18

Reserve 19

 For example, insert 15 to select USA.

1 −

Samsung Electronics 4-31

Page 56

Troubleshooting

6. After step (5), you can see “15 USA” on the VFD.

It means that currently System Micom program is installed by USA

specification.

7. Turn the Power off.

[Tip]

In case of System Micom and EEPROM problem, you can apply to this.

For example, during Updating program of System Micom, if Updating fail is happened, it is impossible to turn on

the system from stand-by status.

The system will keep the stand-by status continuously, and the touch-key function will never work.

In this case, you have to change System Micom, and set up the Buyer Region code again.

In case of EEPROM, you don't need to care about it.

After set-up the Region code, System Micom will store the information of the region code to EEPROM

automatically.

15 USA

4-32 Samsung Electronics

Page 57

Exploded View & Part List

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

.....................................................................5-6

.....................................................................5-7

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

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

5-4

5-8

5-22

Samsung Electronics 5-1

This Document can not be used without Samsung’s authorization.

Page 58

Exploded View & Part List

AD502

AD507

AS260

AB140

FILTE

AH501

AH502

AC501

AM020

HOLDE

AC080

AB155

AA301

AK420

5-1 HT-Z320T/XAA Exploded View

 S.N.A: Service Not Available

5-2 Samsung Electronics

This Document can not be used without Samsung’s authorization.

Page 59

Exploded View & Part List

 Part List

Loc. No. Code No. Description;Specification Q’ty SNA Remark

AA301 AH97-03083D ASSY FRONT;HT-Z320,HT-Z320/XAA,ASSY-FRON 1 SA

AB140 AH61-02811A BRACKET-DOOR;HT-Z320,SUS304,0.3T,6,23 1 SA

AB155 AH61-02874A BRACKET-FRONT;HT-Z320,SUS304,0.3T,6,23 1 SA

AC080 AH64-04895A CABINET-TOP;HT-Z320,SECC,0.5T,429.6,228. 1 SA

AC501 3809-002052 CABLE-FLAT;30V,80,140mm,32P,1.0mm,UL2896 1 SA

AD502 AH64-04897B DOOR-DVD;HT-Z320,ABS+PMMA,2.5T,15.2,143 1 SA

AD507 AH64-04898E DOOR-JACK;HT-Z320/XAA,ABS+PMMA,21.20,186 1 SA

AH501 AH61-02747A HOLDER-MECHA-FRONT;HT-Z320,HIPS,1.5,20,3 2 SA

AH502 AH61-02748A HOLDER-MECHA-REAR;HT-Z320,HIPS,1.5,20,30 1 SA

AK420 AH64-04855A KNOB-VOLUME;HT-Z120,ABS,T2.0,WHT 1 SA

AM020 AH31-00029E MOTOR FAN;C161NK10B0110,MX-GT88,0.15A,1. 1 SA

AS260 AH61-02527A SPRING ETC-DOOR;HT-Z310,STS 304 WPS,0.2, 1 SA

FILTE AH63-01537B FILTER-VFD;HT-Z320,PC,T0.3,15.2,99,RED 1 SA

HOLDE AH61-02750A HOLDER-SMPS;HT-Z320,HIPS,1.5,20,30,BLK 1 SA

DECK AH96-00010C ASSY DECK;HT-Z420/320/220,NEW TRAY,CABLE 1 SA

PCB-FRONT AH92-03045A ASSY PCB FRONT;DVD-RECEIVER,HT-Z320,FRON 1 SA

PCB-KEY AH92-02980A ASSY PCB FUNCTION-KEY;DVD-RECEIVER,HT-Z3 1 SA

PCB-MAIN AH92-02999A ASSY PCB MAIN;-,HT-Z320,MAIN PCB,USA,- 1 SA

PCB-SMPS AH92-02991A ASSY PCB SMPS;HT-Z320,HT-Z320,BASIC,100- 1 SA

POWER CORD 3903-000406 CBF-POWER CORD;AT,US,EP2,HOUSING(2P),125 1 SA

A 6003-000275 SCREW-TAPTYPE;BH,+,-,B,M3,L10,ZPC(BLK),S 25 SA

B 6003-001479 SCREW-TAPTYPE;BH,+,B,M1.7,L4,NI PLT,SWRC 4 SA

C 6003-001561 SCREW-TAPTYPE;BH,+,-,B,M3,L6,ZPC(WHT),SW 3 SA

Samsung Electronics 5-3

This Document can not be used without Samsung’s authorization.

Page 60

Exploded View & Part List

AD502

AD507

AS260

AB140

FILTE

AH501

AH502

AC501

AM020

HOLDE

AC080

AB155

AA301

AK420

5-2 HT-Z420T/XAA Exploded View

 S.N.A: Service Not Available

5-4 Samsung Electronics

This Document can not be used without Samsung’s authorization.

Page 61

Exploded View & Part List

 Part List

Loc. No. Code No. Description;Specification Q’ty SNA Remark

AA301 AH97-03083X ASSY FRONT;HT-Z320,HT-TZ422/NO EUR,ASSY- 1 SA