LG LHD625 User manual

SERVICE MANUAL
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
Internal Use Only
Website http://biz.lgservice.com
DVD Home Theater System
JUNE, 2015P/NO : AFN77133590
MODEL: LHD625 (LHD625, S63S1-S, S63T1-C, S75T1-W)
MODEL: LHD625
(LHD625, S63S1-S, S63T1-C, S75T1-W)

1-1
CONTENTS
SECTION 1 ........ SUMMARY
SECTION 2 ........ ELECTRICAL
SECTION 3 ........ CABINET & MAIN CHASSIS
SECTION 4 ........ REPLACEMENT PARTS LIST

1-2
SECTION 1
SUMMARY
CONTENTS
SERVICING PRECAUTIONS ............................................................................................................................ 1-3
ESD PRECAUTIONS......................................................................................................................................... 1-5
HIDDEN KEY MODE ......................................................................................................................................... 1-6
FIRMWARE UPGRADE GUIDE ........................................................................................................................ 1-8
SPECIFICATIONS ........................................................................................................................................... 1-10

1-3
SERVICING PRECAUTIONS
NOTES REGARDING HANDLING OF THE PICK-UP
1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use.
2) The pick-up should never be subjected to external pressure or impact.
2. Repair notes
1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.
2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or
damage to the printed-circuit board.
3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason
the adjustment point and installation screws should absolutely never be touched.
4) Laser beams may damage the eyes!
Absolutely never permit laser beams to enter the eyes!
Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
5) Cleaning the lens surface
If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used
for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cot-
ton swab should be used, taking care not to distort lens.
6) Never attempt to disassemble the pick-up.
Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab.
(Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much
of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
Storage in conductive bag Drop impact
NEVER look directly at the laser beam, and don’t allow
contact with fingers or other exposed skin.
Magnet
How to hold the pick-up
Conductive Sheet
Cotton swab
Pressure
Pressure

1-4
CAUTION: CLASS 1M VISIBLE AND INVISIBLE LASER RADIATION WHEN
OPEN. DO NOT VIEW DIRECTLY WITH OPTICAL INSTRUMENTS
Use of controls, adjustments or the performance of procedures other than
those specified herein may result in hazardous radiation exposure.
NOTES REGARDING COMPACT DISC PLAYER REPAIRS
1. Preparations
1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components
are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components
can be damaged, and for that reason components should be handled with care.
2) The pick-up is composed of many optical components and other high-precision components. Care must be
taken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnet-
ism is present, or where there is excessive dust.
2. Notes for repair
1) Before replacing a component part, first disconnect the power supply lead wire from the unit
2) All equipment, measuring instruments and tools must be grounded.
3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is
because there is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron should be grounded.
5) Workers should be grounded by an armband (1 M)
6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent
static electricity changes in the clothing to escape from the armband.
7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.
Resistor
(1 M)Conductive
Sheet
Resistor
(1 M)
Armband

1-5
ESD PRECAUTIONS
Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components
commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated
circuits and some field-effect transistors and semiconductor chip components. The following techniques should
be used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off
any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device, which should be removed for potential shock reasons
prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface
such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can
generate electrical charges sufficient to damage ESD devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD
devices.
6. Do not remove a replacement ESD device from its protective package until immediately before you are
ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive materials).
7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the
protective material to the chassis or circuit assembly into which the device will by installed.
CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER
SAFETY PRECAUTIONS.
8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion
such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate
static electricity sufficient to damage an ESD device).
CAUTION. GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS
INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED
“DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF
ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE
SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE
LITERATURE.

1-6
1. DISPLAY SYSTEM INFORMATION
1) Change function to DVD/CD by pressing input key, and wait until home menu is shown.
- Do not insert disc or USB at the set.
2) Go to SETUP menu by pressing SETUP button in HOME menu.
3) Move highlight at "DISPLAY -> TV Aspect -> 16:9".
4) Press "1 -> 3 -> 9 -> 7 -> 1 -> 3 -> 9 -> ENTER" in order.
5) and then, system reset menu is displayed.
6) Power off and on by pressing POWER key.
HIDDEN KEY MODE

1-7
2. EEPROM EDIT
1) Change function to DVD/CD by pressing input key, and wait until home menu is shown.
- Do not insert disc or USB at the set.
2) Press "PAUSE -> 1 -> 4 -> 7 -> 2" in order.
3) and then, option setting menu is displayed.
You can see 10 bytes option value.
4) Move a cursor by pressing Arrow < > key.
5) Press number 0 ~ 9, character a ~ f (1 ~ 6 for a while) for more than 5 seconds
6) Press "PAUSE" key to exit option setting menu.
After change option value, you need to make system reset.
3. DOOR LOCK / UNLOCK
1) Press Front “STOP” + Remote control “STOP” for more than 5 seconds.
2) “LOCKED” / “UNLOCKED” display on the VFD.

1-8
1. MPEG
1) Copy firmware to USB (Do not change file name).
Ex) LG_LHD655LD7_1501051.rom
2) Change function to DVD/CD by pressing input key, and wait until home menu is shown.
3) Inset USB device which includes firmware.
4) Firmware is detected automatically and then, shows blue screen in TV.
If home menu is maintained after inserting USB, press music icon.
5) Take off the USB and press PLAY key.
6) and then, upgrading is started.
- Do not turn off the set until upgrade is finished.
7) After finishing firmware upgrading, set will restart automatically.
8) Power off and on again by pressing POWER key.
FIRMWARE UPGRADE GUIDE

1-9
2. AUDIO MICOM
1) Copy firmware to USB (Do not change file name).
Ex) LHD655_1501050.HEX
2) Change function to DVD/CD by pressing input key, and wait until home menu is shown.
3) Inset USB device which includes firmware.
4) Firmware is detected automatically and then, shows blue screen in TV.
If home menu is maintained after inserting USB, press music icon.
5) Upgrading is started.
- Do not turn off the set until upgrade is finished.
- Do not pull out the USB device using firmware upgrading.
6) After finishing firmware upgrading, set will be turned off.
3. EQ
1) Copy firmware to USB (Do not change file name).
Ex) EQ_PRG.BIN
2) Change function to DVD/CD by pressing input key, and wait until home menu is shown.
3) Inset USB device which includes firmware.
4) Firmware is detected automatically and then, shows blue screen in TV.
If Home menu is maintained after inserting USB, press music icon.
5) Upgrading is started.
- Do not turn off the set until upgrade is finished.
- Do not pull out the USB device using firmware upgrading.
6) After finishing firmware upgrading, set will be turned off.

1-10
• GENERAL
Power requirements Refer to main label.
Power consumption Refer to main label.
Networked standby 0.4 W (If all network ports are activated.)
Dimensions (W x H x D) (360 x 60.5 x 299) mm without foot
Net Weight (Approx.) 2.69 kg
Operating temperature 5 °C to 35 °C
Operating humidity 5 % to 90 %
Bus Power Supply 5 V 500 mA
• INPUTS/ OUTPUTS
VIDEO OUT 1.0 V (p-p), 75 Ω, sync negative, RCA jack x 1
HDMI OUT (video/audio) 19 pin (Type A, HDMI™ Connector ) x 1
ANALOG AUDIO IN 2.0 Vrms (1 kHz, 0 dB), 600 Ω, RCA jack (L, R) x 1
DIGITAL IN (OPTICAL) 3 V (p-p), Optical jack x 1
PORT. IN 0.5 Vrms (3.5 mm stereo jack) x 1
• AMPLIFIER
Stereo mode 167 W + 167 W (3 Ωat 1kHz)
Surround mode Front 167 W + 167 W (3 Ωat 1 kHz)
Center 167 W (3 Ωat 1 kHz)
Surround 167 W + 167 W (3 Ωat 1 kHz))
Subwoofer 167 W (3 Ωat 60 Hz)
• TUNER
FM Tuning Range 87.5 to 108.0 MHz or 87.50 to 108.00 MHz
SPECIFICATIONS

1-11
• SPEAKERS
Front Speaker
Type 1 Way 1 speaker
Impedance Rated 3 Ω
Input Power 167 W
Max. Input Power 334 W
Net Dimensions (W x H x D) (88 x 122 x 81) mm
Net Weight 0.5 kg
Rear Speaker
Type 1 Way 1 speaker
Impedance Rated 3 Ω
Input Power 167 W
Max. Input Power 334 W
Net Dimensions (W x H x D) (88 x 122 x 81) mm
Net Weight 0.5 kg
Center Speaker
Type 1 Way 1 speaker
Impedance Rated 3 Ω
Input Power 167 W
Max. Input Power 334 W
Net Dimensions (W x H x D) (260 x 93 x 74) mm
Net Weight 0.6 kg
Passive Subwoofer
Type 1 Way 1 speaker
Impedance Rated 3 Ω
Input Power 167 W
Max. Input Power 334 W
Net Dimensions (W x H x D) (190 x 385 x 318) mm
Net Weight 5.0 kg
•Design and specifications are subject to change without notice.

1-12

2-1
SECTION 2
ELECTRICAL
CONTENTS
DIGITAL DISPLAY & MEDIA TRAINING MASTER ......................................................................................... 2-2
1. DISTORTED PICTURE........................................................................................................................... 2-2
2. NO PICTURE .......................................................................................................................................... 2-7
3. PICTURE COLOR................................................................................................................................. 2-12
4. NOISE/AUDIO PROBLEMS.................................................................................................................. 2-14
5. MISCELLANEOUS................................................................................................................................ 2-17
ONE POINT REPAIR GUIDE .......................................................................................................................... 2-26
1. NO POWER PROBLEM ....................................................................................................................... 2-26
2. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE ON FRONT PANEL.................... 2-28
3. BAD HDMI VIDEO / AUDIO OUTPUT.................................................................................................. 2-34
4. NO AUDIO FROM SPEAKER............................................................................................................... 2-35
5. NO USB ................................................................................................................................................ 2-36
6. BT CONNECTION ERROR .................................................................................................................. 2-37
ELECTRICAL TROUBLESHOOTING GUIDE................................................................................................. 2-38
1. SYSTEM POWER SUPPLY ON SMPS BOARD.................................................................................. 2-38
2. POWER SUPPLY ON MAIN BOARD................................................................................................... 2-41
3. SYSTEM PART..................................................................................................................................... 2-43
4. NO HDMI OUTPUT............................................................................................................................... 2-45
5. NO AUDIO OUTPUT ............................................................................................................................ 2-46
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING ....................................................... 2-47
1. SYSTEM PART (MPEG CRYSTAL 27 MHz) ....................................................................................... 2-47
2. SDRAM CLOCK.................................................................................................................................... 2-48
3. VIDEO PART (100% FULL COLOR-BAR) ........................................................................................... 2-48
4. HDMI PART .......................................................................................................................................... 2-49
5. SERVO OPEN/CLOSE SIGNAL........................................................................................................... 2-50
WIRING DIAGRAM.......................................................................................................................................... 2-59
BLOCK DIAGRAM .......................................................................................................................................... 2-61
CIRCUIT DIAGRAMS ...................................................................................................................................... 2-63
1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 2-63
2. MAIN & AMP - MPEG CIRCUIT DIAGRAM ......................................................................................... 2-65
3. MAIN & AMP - SERVO CIRCUIT DIAGRAM ....................................................................................... 2-67
4. MAIN & AMP - I/O CIRCUIT DIAGRAM ............................................................................................... 2-69
5. MAIN & AMP - MICOM CIRCUIT DIAGRAM........................................................................................ 2-71
6. MAIN & AMP - PWM CIRCUIT DIAGRAM ........................................................................................... 2-73
7. MAIN & AMP - AMP CIRCUIT DIAGRAM ............................................................................................ 2-75
8. JACK CIRCUIT DIAGRAM ................................................................................................................... 2-77
9. FRONT CIRCUIT DIAGRAM ................................................................................................................ 2-79
CIRCUIT VOLTAGE CHART........................................................................................................................... 2-81
1. ICs......................................................................................................................................................... 2-81
2. CAPACITORS....................................................................................................................................... 2-81
3. CONNECTORS..................................................................................................................................... 2-82
PRINTED CIRCUIT BOARD DIAGRAMS ....................................................................................................... 2-83
1. SMPS P. C. BOARD ............................................................................................................................. 2-83
2. MAIN & AMP P. C. BOARD.................................................................................................................. 2-85
3. JACK P. C. BOARD .............................................................................................................................. 2-87
4. FRONT P. C. BOARD........................................................................................................................... 2-87

2-2
DIGITAL DISPLAY & MEDIA TRAINING MASTER
Objective: To provide clear and concise guidelines for customer service agents to handle calls on
box goods calls.
1. DISTORTED PICTURE
1-1. Lines on Picture
Distorted picture refers to the customer getting video, but there is a problem with the video.
What cables is
the customer using to
connect the DVD?
NO
YES
Determine what cables the customer is using to connect
the DVD to the TV and if connected properly. Refer to OM for
connections. Tighten any loose cables. Make sure the customer
is not connecting a DVD to VCR.
Copy protection can distort the picture on older DVD models.
Is the TV set
to the correct input?
NO
YES
Make sure the TV is on the correct input.
Turn TV off, then on to determine input.
Video when using composite, or component.
DVI when using DVI, and HDMI when using HDMI.
Do lines appear when
watching multiple discs?
NO
YES
One disc displaying the issue is a problem with the disc.
Multiple discs displaying the problem could indicate the DVD lens
needs to be cleaned. Recommend the customer use a lens
cleaner on the DVD. A lens cleaner is available at any local
electronics retailer.
Do lines appear when
watching a TV program?
NO
YES
Lines appearing when watching a TV program indicates
an issue with the display. If the TV program is fine,
then connect the DVD to another input on the display to
determine if the problem is following the DVD.
Do lines appear
when the DVD is
connected to another TV?
NO
YES
Connect the DVD to another TV and play a disc.
No lines during disc play back indicates a problem with the first TV.
Please refer to the owners manual for instructions on how to
connect the DVD to a TV. If the DVD has a problem on the
second TV, then see service chart for service information.
Has the customer tried
another set of cables?
NO Have the customer try another set of cables. A bad cable can
also cause video problems. Test the cable with another device to
the TV to also determine if the TV is bad. If DVD is problem,
please see service chart for service information.

2-3
DIGITAL DISPLAY & MEDIA TRAINING MASTER
What cables is the customer
using to connect the DVD?
NO
YES
Determine what cables the customer is using to connect the DVD to
the TV and if connected properly. Refer to OM for connections.
Tighten any loose cables. Make sure the customer is not connecting a
DVD to VCR or DVD. Copy protection can distort
the picture on older VCR models.
Is the TV set to
the correct input?
NO
YES
Make sure the TV is on the correct input. Turn TV off,
then on to determine input. Video when using composite,
or component. DVI when using DVI, and HDMI when using HDMI.
Do ghosting appear when
watching multiple discs?
NO
YES
One disc displaying the issue is a problem with the disc.
Multiple discs displaying the problem could indicate the DVD lens
needs to be cleaned. Recommend the customer use a lens cleaner
on the DVD. A lens cleaner is available at any local electronics retailer.
Do lines appear when
watching a TV program?
NO
YES
Ghosting appearing when watching a TV program indicates an
issue with the display. If the TV program is fine, then connect
the DVD to another input on the display to determine
if the problem is following the DVD.
Does ghosting
appear when the DVD is
connected to another TV?
NO
YES
Connect the DVD to another TV and play a disc.
No ghosting during disc play back indicates a problem with the first TV.
Please refer to the owners manual for instructions on how to
connect the DVD to a TV. If the DVD has a problem on the second TV,
then see service chart for service information.
Has the customer tried
another set of cables?
NO Have the customer try another set of cables. A bad cable can
also cause video problems. Test the cable with another device to
the TV to also determine if the TV is bad. If DVD is problem,
please see service chart for service information.
1-2. Ghost Picture
Distorted picture refers to the customer getting video, but there is a problem with the video.

2-4
DIGITAL DISPLAY & MEDIA TRAINING MASTER
What cables is the customer
using to connect the DVD?
NO
YES
Determine what cables the customer is using to connect the DVD to
the TV and if connected properly. Refer to OM for connections.
Tighten any loose cables. Make sure the customer is not connecting
a DVD to VCR. Copy protection can distort
the picture on older VCR models.
Is the TV set to
the correct input?
NO
YES
Make sure the TV is on the correct input. Turn TV off,
then on to determine input. Video when using composite,
or component. DVI when using DVI, and HDMI when using HDMI.
Does rolling appear when
watching multiple discs?
NO
YES
One disc displaying the issue is a problem with the disc.
Multiple discs displaying the problem could indicate the DVD lens
needs to be cleaned. Recommend the customer use a lens cleaner
on the DVD. A lens cleaner is available at any local electronics retailer.
Does rolling appear when
watching a TV program?
NO
YES
Rolling appearing when watching a TV program indicates
an issue with the display. If the TV program is fine, then connect
the DVD to another input on the display to determine if the problem
is following the DVD.
Does rolling appear
when the DVD is connected to
another TV?
NO
YES
Connect the DVD to another TV and play a disc. No lines during disc
playback indicates a problem with the first TV.
Please refer to the owners manual for instructions on how to connect the
DVD to a TV. If the DVD has a problem on the second TV,
then see service chart for service information.
Has the customer tried
another set of cables?
NO Have the customer try another set of cables. A bad cable can also
cause video problems. Test the cable with another device to the TV
to also determine if the TV is bad. If DVD is problem,
please see service chart for service information.
1-3. Rolling Picture
Distorted picture refers to the customer getting video, but there is a problem with the video.

2-5
DIGITAL DISPLAY & MEDIA TRAINING MASTER
What cables is the customer
using to connect the DVD?
NO
YES
Determine what cables the customer is using to connect the DVD to
the TV and if connected properly. Refer to OM for connections.
Tighten any loose cables.
Make sure the customer is not connecting a DVD.
Copy protection can distort the picture on older VCR models.
Is the TV set to
the correct input?
NO
YES
Make sure the TV is on the correct input. Turn TV off, then on
to determine input. Video when using composite, or component.
DVI when using DVI, and HDMI when using HDMI.
Does shaking appear when
watching multiple discs?
NO
YES
One disc displaying the issue is a problem with the disc.
Multiple discs displaying the problem could indicate the DVD lens
needs to be cleaned. Recommend the customer use a lens cleaner
on the DVD. A lens cleaner is available at any local electronics retailer.
Does shaking appear when
watching a TV program?
NO
YES
Shaking appearing when watching a TV program indicates an issue with
the display. If the TV program is fine, then connect the DVD to another
input on the display to determine if the problem is following the DVD.
Does shaking appear
when the DVD is connected to
another TV?
NO
YES
Connect the DVD to another TV and play a disc. No shaking during
disc play back indicates a problem with the first TV. Please refer to
the owners manual for instructions on how to connect the DVD to a TV.
If the DVD has a problem on the second TV,
then see service chart for service information.
Has the customer tried
another set of cables?
NO Have the customer try another set of cables. A bad cable can
also cause video problems. Test the cable with another device to
the TV to also determine if the TV is bad. If DVD is problem,
please see service chart for service information.
1-4. Shaky Picture
Distorted picture refers to the customer getting video, but there is a problem with the video.

2-6
DIGITAL DISPLAY & MEDIA TRAINING MASTER
What cables is the customer
using to connect the DVD?
NO
YES
Determine what cables the customer is using to connect the DVD to
the TV and if connected properly. Refer to OM for connections.
Tighten any loose cables. Make sure the customer is not connecting
a DVD to VCR. Copy protection can distort
the picture on older VCR models.
Is the TV set to
the correct input?
NO
YES
Make sure the TV is on the correct input. Turn TV off,
then on to determine input. Video when using composite, or component.
DVI when using DVI, and HDMI when using HDMI.
Does blurriness appear when
watching multiple discs?
NO
YES
One disc displaying the issue is a problem with the disc.
Multiple discs displaying the problem could indicate the DVD lens
needs to be cleaned. Recommend the customer use a lens cleaner on
the DVD. A lens cleaner is available at any local electronics retailer.
Does blurriness appear when
watching a TV program?
NO
YES
Blurriness appearing when watching a TV program indicates an
issue with the display. If the TV program is fine, then connect
the DVD to another input on the display to determine if the problem
is following the DVD.
Does blurriness appear
when the DVD is connected to
another TV?
NO
YES
Connect the DVD to another TV and play a disc. No blurriness
during disc play back indicates a problem with the first TV.
Please refer to the owners manual for instructions on how to connect
the DVD to a TV. If the DVD has a problem on the second TV,
then see service chart for service information.
Has the customer tried
another set of cables?
NO Have the customer try another set of cables.
A bad cable can also cause video problems. Test the cable with another
device to the TV to also determine if the TV is bad. If DVD is problem,
please see service chart for service information.
1-5. Blurry Picture
Distorted picture refers to the customer getting video, but there is a problem with the video.

2-7
DIGITAL DISPLAY & MEDIA TRAINING MASTER
2. NO PICTURE
2-1. Black Screen
The entire screen is black.
Does the DVD on-screen
menu appear?
NO
YES
Make sure the customer did not select 480i resolution in the menu
of the DVD HTS if using HDMI connections. Change resolution on
upconversion DVD HTS by pushing the resolution button of the remote
controller. HDMI don’t support 480i resolution.
What cables is the customer
using to connect the DVD?
NO
YES
Determine what cables the customer is using to connect the DVD to
the TV and if connected properly. Refer to OM for connections.
Tighten any loose cables. Make sure the customer is not connecting a
DVD to VCR. Copy protection can distort
the picture on older VCR models.
Is the TV set to
the correct input?
NO
YES
Make sure the TV is on the correct input. Turn TV off,
then on to determine input. Video when using composite, or component.
DVI when using DVI, and HDMI when using HDMI.
Is the customer able to
watch TV programming?
NO
YES
If the customer is not able to watch television then he may have a
problem with his television, especially if the cable signal comes
through on a different input. If the customer can not get a TV program,
then he still may have a problem with the particular input on his TV.
Can the customer connect
the DVD to another TV?
NO
YES
Have the customer connect the DVD to another TV in order to
determine if the problem is the DVD or the TV. Refer to the OM for
connections assistance. If the DVD works on the second TV,
then the customer has a problem with his TV.
Has the customer tried
another set of cables?
NO Have the customer try another set of cables. A bad cable can
also cause video problems. Test the cable with another device to the TV
to also determine if the TV is bad. If DVD is problem,
please see service chart for service information.