FUNAI LT5-M32BB User manual

SERVICE MANUAL
32″COLOR LCD TELEVISION
LT5-M32BB

32″COLOR LCD TELEVISION
LT5-M32BB
TABLE OF CONTENTS
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Important Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Cabinet Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
How to Initialize the LCD Television. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Electrical Adjustment Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Schematic Diagrams / CBA’s and Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1
Electrical Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1
The LCD panel is manufactured to provide many years of useful life.
Occasionally a few non active pixels may appear as a tiny spec of color.
This is not to be considered a defect in the LCD screen.

1-1 A73F2SP
SPECIFICATIONS
< TUNER >
VHS/UHF Input ----------- 75ΩUnbal., IEC Connector
Intermediate Freq. ------- Digital 36.167MHz, SECAM-L 38.9MHz, SECAM-L’ 33.9MHz, PAL BG/DK 38.9MHz
< LCD PANEL >
<DVB-T>
*1: modulation parameters = [8k 64QAM CR=2/3 GI=1/32]
*2: modulation parameters = [2k 64QAM CR=2/3 GI=1/32]
*3: modulation parameters = [2k 16QAM CR=3/4 GI=1/32]
< VIDEO >
Description Condition Unit Nominal Limit
1. Video S/N 80 dB --- 40
2. Audio S/N --- dB --- 40/40
Description Condition Unit Nominal Limit
1. Number of Pixels Horizontal
Ver t ical
pixels
pixels
1366× 3
768
---
---
2. Viewing Angle Horizontal
Ver t ical
°
°
-85 to 85
-85 to 85
---
---
Description Condition Unit Nominal Limit
1. RECEIVED
FREQ.RANGE
(-60dBm, 45ch.) *1
+
-
kHz
kHz
1000
900
500
167
2. INPUT DYNAMIC
RANGE (mix./max) *1
VHF HIGH 7ch.
UHF 45ch.
dBm
dBm
-82.5/2
-81.1/2
-79.9/-10
-79.3/-10
3. C/N PERFORMANCE
*1
VHF HIGH 7ch.
UHF 45ch.
dB
dB
15
15
17.9
17.9
4. MULTIPATH
a. Performance with
short delay echoes
b. Performance with
long delay echoes
c. C/N Performance on
0dB echo channel
(14µs)
UHF 45ch.
c:*2
d:*3
c:*2
d:*3
c:*1
dB
dB
dB
dB
dB
18.7
14.0
19.1
13.0
20.7
≦22.2
≦19.5
≦22.2
≦18.0
≦24.0
5. Audio S/N (0dBfs) Lch
Rch
dB
dB
---
---
40
40
6. Audio DIST. (0dBfs) Lch
Rch
%
%
---
---
10
10
Description Condition Unit Nominal Limit
1. Over Scan Horizontal
Vertical
%
%
5
5
---
---
2. Color Temperature
AT 70% WHITE FIELD
x
y
°K 12000
0.272
0.278
---
±0.03
±0.03
3. Resolution Horizontal
Vertical
line
line
400
350
---
---
4. Brightness AT 100% WHITE FIELD
BRT/CNT MAX cd/m2450 ---

1-2 A73F2SP
< AUDIO >
All items are measured across 8 Ωload at speaker output terminal.
Note: Nominal specifications represent the design specifications. All units should be able to approximate these.
Some will exceed and some may drop slightly below these specifications. Limit specifications represent
the absolute worst condition that still might be considered acceptable. In no case should a unit fail to meet
limit specifications.
Description Condition Unit Nominal Limit
1. Audio Output Power 10% THD: Lch/Rch W 5.0/5.0 4.5/4.5
2. Audio Distortion 500mW: Lch/Rch % 1.0/1.0 4.0/4.0
3. Audio Freq. Response
- 6dB: Lch
- 6dB: Rch
Hz
Hz
100 to 12 k
100 to 12 k
---
---
4. Audio S/N VIDEO 1 dB --- >45/45

2-1 LTVP_ISP
IMPORTANT SAFETY PRECAUTIONS
Prior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical
codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally
important to implement the following precautions when a set is being serviced.
Safety Precautions for LCD TV
Circuit
1. Before returning an instrument to the
customer, always make a safety check of the
entire instrument, including, but not limited to, the
following items:
a. Be sure that no built-in protective devices are
defective and have been defeated during
servicing. (1) Protective shields are provided
on this chassis to protect both the technician
and the customer. Correctly replace all missing
protective shields, including any removed for
servicing convenience. (2) When reinstalling
the chassis and/or other assembly in the
cabinet, be sure to put back in place all
protective devices, including but not limited to,
nonmetallic control knobs, insulating
fishpapers, adjustment and compartment
covers/shields, and isolation resistor/capacitor
networks. Do not operate this instrument or
permit it to be operated without all
protective devices correctly installed and
functioning. Servicers who defeat safety
features or fail to perform safety checks
may be liable for any resulting damage.
b. Be sure that there are no cabinet openings
through which an adult or child might be able to
insert their fingers and contact a hazardous
voltage. Such openings include, but are not
limited to, (1) spacing between the LCD module
and the cabinet mask, (2) excessively wide
cabinet ventilation slots, and (3) an improperly
fitted and/or incorrectly secured cabinet back
cover.
c. Antenna Cold Check - With the instrument AC
plug removed from any AC source, connect an
electrical jumper across the two AC plug
prongs. Place the instrument AC switch in the
on position. Connect one lead of an ohmmeter
to the AC plug prongs tied together and touch
the other ohmmeter lead in turn to each tuner
antenna input exposed terminal screw and, if
applicable, to the coaxial connector. If the
measured resistance is less than 1.0 megohm
or greater than 5.2 megohm, an abnormality
exists that must be corrected before the
instrument is returned to the customer. Repeat
this test with the instrument AC switch in the off
position.
d. Leakage Current Hot Check - With the
instrument completely reassembled, plug the
AC line cord directly into a 230 V AC outlet. (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) 1410, (50.7).
With the instrument AC switch first in the on
position and then in the off position, measure
from a known earth ground (metal water pipe,
conduit, etc.) to all exposed metal parts of the
instrument (antennas, handle brackets, metal
cabinet, screw heads, metallic overlays, control
shafts, etc.), especially any exposed metal
parts that offer an electrical return path to the
chassis. Any current measured must not
exceed 0.5 milli-ampere. Reverse the
instrument power cord plug in the outlet and
repeat the test.
ANY MEASUREMENTS NOT WITHIN THE
LIMITS SPECIFIED HEREIN INDICATE A
POTENTIAL SHOCK HAZARD THAT MUST
BE ELIMINATED BEFORE RETURNING THE
INSTRUMENT TO THE CUSTOMER OR
BEFORE CONNECTING THE ANTENNA OR
ACCESSORIES.
2. Read and comply with all caution and safety-
related notes on or inside the receiver cabinet, on
the receiver chassis, or on the LCD module.
3. Design Alteration Warning - Do not alter or add
to the mechanical or electrical design of this LCD
TV receiver. Design alterations and additions,
including, but not limited to circuit modifications
and the addition of items such as auxiliary audio
and/or video output connections, might alter the
safety characteristics of this receiver and create a
hazard to the user. Any design alterations or
additions will void the manufacturer's warranty and
may make you, the servicer, responsible for
personal injury or property damage resulting
therefrom.
ALSO TEST WITH
PLUG REVERSED
USING AC
ADAPTER PLUG
AS REQUIRED
TEST ALL EXPOSED
METAL SURFACES
READING SHOULD
NOT BE ABOVE 0.5 mA
EARTH
GROUND
_
DEVICE
LEAKAGE
CURRENT
TESTER
+
BEING
TESTED

2-2 LTVP_ISP
4. Hot Chassis Warning -
a. Some TV receiver chassis are electrically
connected directly to one conductor of the AC
power cord and maybe safety-serviced without
an isolation transformer only if the AC power
plug is inserted so that the chassis is
connected to the ground side of the AC power
source. To confirm that the AC power plug is
inserted correctly, with an AC voltmeter,
measure between the chassis and a known
earth ground. If a voltage reading in excess of
1.0 V is obtained, remove and reinsert the AC
power plug in the opposite polarity and again
measure the voltage potential between the
chassis and a known earth ground.
b. Some TV receiver chassis normally have 85V
AC(RMS) between chassis and earth ground
regardless of the AC plug polarity. This chassis
can be safety-serviced only with an isolation
transformer inserted in the power line between
the receiver and the AC power source, for both
personnel and test equipment protection.
c. Some TV receiver chassis have a secondary
ground system in addition to the main chassis
ground. This secondary ground system is not
isolated from the AC power line. The two
ground systems are electrically separated by
insulation material that must not be defeated or
altered.
5. Observe original lead dress. Take extra care to
assure correct lead dress in the following areas: a.
near sharp edges, b. near thermally hot parts-be
sure that leads and components do not touch
thermally hot parts, c. the AC supply, d. high
voltage, and, e. antenna wiring. Always inspect in
all areas for pinched, out of place, or frayed wiring.
Check AC power cord for damage.
6. Components, parts, and/or wiring that appear to
have overheated or are otherwise damaged
should be replaced with components, parts, or
wiring that meet original specifications.
Additionally, determine the cause of overheating
and/or damage and, if necessary, take corrective
action to remove any potential safety hazard.
7. Product Safety Notice - Some electrical and
mechanical parts have special safety-related
characteristics which are often not evident from
visual inspection, nor can the protection they give
necessarily be obtained by replacing them with
components rated for higher voltage, wattage, etc..
Parts that have special safety characteristics are
identified by a !on schematics and in parts lists.
Use of a substitute replacement that does not
have the same safety characteristics as the
recommended replacement part might create
shock, fire, and/or other hazards. The product's
safety is under review continuously and new
instructions are issued whenever appropriate.
Prior to shipment from the factory, our products
are strictly inspected to confirm they comply with
the recognized product safety and electrical codes
of the countries in which they are to be sold.
However, in order to maintain such compliance, it
is equally important to implement the following
precautions when a set is being serviced.

2-3 LTVP_ISP
Precautions during Servicing
A. Parts identified by the !symbol are critical for
safety.
Replace only with part number specified.
B. In addition to safety, other parts and assemblies
are specified for conformance with regulations
applying to spurious radiation. These must also be
replaced only with specified replacements.
Examples: RF converters, RF cables, noise
blocking capacitors, and noise blocking filters, etc.
C. Use specified internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
D. Use specified insulating materials for hazardous
live parts. Note especially:
1) Insulation Tape
2) PVC tubing
3) Spacers
4) Insulators for transistors.
E. When replacing AC primary side components
(transformers, power cord, etc.), wrap ends of
wires securely about the terminals before
soldering.
F. Observe that the wires do not contact heat
producing parts (heat sinks, oxide metal film
resistors, fusible resistors, etc.)
G. Check that replaced wires do not contact sharp
edged or pointed parts.
H. When a power cord has been replaced, check that
5~6 kg of force in any direction will not loosen it.
I. Also check areas surrounding repaired locations.
J. Use care that foreign objects (screws, solder
droplets, etc.) do not remain inside the set.
K. When connecting or disconnecting the internal
connectors, first, disconnect the AC plug from the
AC supply outlet.
L. When installing parts or assembling the cabinet
parts, be sure to use the proper screws and
tighten certainly.

2-4 LTVP_ISP
Safety Check after Servicing
Examine the area surrounding the repaired location
for damage or deterioration. Observe that screws,
parts and wires have been returned to original posi-
tions. Afterwards, perform the following tests and con-
firm the specified values in order to verify compliance
with safety standards.
1. Clearance Distance
When replacing primary circuit components, confirm
specified clearance distance (d) and (d') between sol-
dered terminals, and between terminals and surround-
ing metallic parts. (See Fig. 1)
Table 1 : Ratings for selected area
Note: This table is unofficial and for reference only.
Be sure to confirm the precise values.
2. Leakage Current Test
Confirm the specified (or lower) leakage current be-
tween B (earth ground, power cord plug prongs) and
externally exposed accessible parts (RF terminals, an-
tenna terminals, video and audio input and output ter-
minals, microphone jacks, earphone jacks, etc.).
Measuring Method : (Power ON)
Insert load Z between B (earth ground, power cord
plug prongs) and exposed accessible parts. Use an
AC voltmeter to measure across both terminals of load
Z. See Fig. 2 and following table.
Table 2: Leakage current ratings for selected areas
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
AC Line Voltage Clearance Distance (d), (d’)
220 to 240 V ≥3mm(d)
≥6 mm(d’)
Fig. 1
Chassis or Secondary Conductor
Primary Circuit
d' d
Fig. 2
AC Voltmeter
(High Impedance)
Exposed Accessible Part
BOne side of
Power Cord Plug Prongs
Z
AC Line Voltage Load Z Leakage Current (i) One side of power cord plug
prongs (B) to:
220 to 240 V
2kΩ RES.
Connected in
parallel
i≤0.7mA AC Peak
i≤2mA DC
RF or
Antenna terminals
50kΩRES.
Connected in
parallel
i≤0.7mA AC Peak
i≤2mA DC A/V Input, Output

3-1 TVP_SN
STANDARD NOTES FOR SERVICING
Circuit Board Indications
1. The output pin of the 3 pin Regulator ICs is
indicated as shown.
2. For other ICs, pin 1 and every fifth pin are
indicated as shown.
3. The 1st pin of every male connector is indicated as
shown.
Pb (Lead) Free Solder
Pb free mark will be found on PCBs which use Pb
free solder. (Refer to figure.) For PCBs with Pb free
mark, be sure to use Pb free solder. For PCBs
without Pb free mark, use standard solder.
How to Remove / Install Flat Pack-IC
1. Removal
With Hot-Air Flat Pack-IC Desoldering Machine:
1. Prepare the hot-air flat pack-IC desoldering
machine, then apply hot air to the Flat Pack-IC
(about 5 to 6 seconds). (Fig. S-1-1)
2. Remove the flat pack-IC with tweezers while
applying the hot air.
3. Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
4. Release the flat pack-IC from the CBA using
tweezers. (Fig. S-1-6)
CAUTION:
1. The Flat Pack-IC shape may differ by models. Use
an appropriate hot-air flat pack-IC desoldering
machine, whose shape matches that of the Flat
Pack-IC.
2. Do not supply hot air to the chip parts around the
flat pack-IC for over 6 seconds because damage
to the chip parts may occur. Put masking tape
around the flat pack-IC to protect other parts from
damage. (Fig. S-1-2)
3. The flat pack-IC on the CBA is affixed with glue, so
be careful not to break or damage the foil of each
pin or the solder lands under the IC when
removing it.
Top View
Out In
Bottom View
Input
5
10
Pin 1
Pin 1
Pb free mark
Fig. S-1-1
Hot-air
Flat Pack-IC
Desoldering
Machine
CBA
Flat Pack-IC
Tweezers
Masking
Tape
Fig. S-1-2

3-2 TVP_SN
With Soldering Iron:
1. Using desoldering braid, remove the solder from
all pins of the flat pack-IC. When you use solder
flux which is applied to all pins of the flat pack-IC,
you can remove it easily. (Fig. S-1-3)
2. Lift each lead of the flat pack-IC upward one by
one, using a sharp pin or wire to which solder will
not adhere (iron wire). When heating the pins, use
a fine tip soldering iron or a hot air desoldering
machine. (Fig. S-1-4)
3. Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
4. Release the flat pack-IC from the CBA using
tweezers. (Fig. S-1-6)
With Iron Wire:
1. Using desoldering braid, remove the solder from
all pins of the flat pack-IC. When you use solder
flux which is applied to all pins of the flat pack-IC,
you can remove it easily. (Fig. S-1-3)
2. Affix the wire to a workbench or solid mounting
point, as shown in Fig. S-1-5.
3. While heating the pins using a fine tip soldering
iron or hot air blower, pull up the wire as the solder
melts so as to lift the IC leads from the CBA
contact pads as shown in Fig. S-1-5.
4. Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
5. Release the flat pack-IC from the CBA using
tweezers. (Fig. S-1-6)
Note: When using a soldering iron, care must be
taken to ensure that the flat pack-IC is not
being held by glue. When the flat pack-IC is
removed from the CBA, handle it gently
because it may be damaged if force is applied.
Flat Pack-IC Desoldering Braid
Soldering Iron
Fig. S-1-3
Fine Tip
Soldering Iron
Sharp
Pin
Fig. S-1-4
To Solid
Mounting Point
Soldering Iron
Iron Wire
or
Hot Air Blower
Fig. S-1-5
Fine Tip
Soldering Iron
CBA
Flat Pack-IC
Tweezers
Fig. S-1-6

3-3 TVP_SN
2. Installation
1. Using desoldering braid, remove the solder from
the foil of each pin of the flat pack-IC on the CBA
so you can install a replacement flat pack-IC more
easily.
2. The “●” mark on the flat pack-IC indicates pin 1.
(See Fig. S-1-7.) Be sure this mark matches the 1
on the PCB when positioning for installation. Then
presolder the four corners of the flat pack-IC. (See
Fig. S-1-8.)
3. Solder all pins of the flat pack-IC. Be sure that
none of the pins have solder bridges.
Instructions for Handling Semi-
conductors
Electrostatic breakdown of the semi-conductors may
occur due to a potential difference caused by
electrostatic charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1 MΩ) that is
properly grounded to remove any static electricity that
may be charged on the body.
2. Ground for Workbench
Be sure to place a conductive sheet or copper plate
with proper grounding (1 MΩ) on the workbench or
other surface, where the semi-conductors are to be
placed. Because the static electricity charge on
clothing will not escape through the body grounding
band, be careful to avoid contacting semi-conductors
with your clothing.
Example :
Pin 1 of the Flat Pack-IC
is indicated by a " " mark. Fig. S-1-7
Presolder
CBA
Flat Pack-IC
Fig. S-1-8
<Incorrect>
CBA
Grounding Band
Conductive Sheet or
Copper Plate
1MΩ
1MΩ
<Correct>
CBA

4-1 A73F2DC
CABINET DISASSEMBLY INSTRUCTIONS
1. Disassembly Flowchart
This flowchart indicates the disassembly steps for the
cabinet parts, and the CBA in order to gain access to
item(s) to be serviced. When reassembling, follow the
steps in reverse order. Bend, route and dress the
cables as they were.
2. Disassembly Method
Note:
(1) Order of steps in procedure. When reassembling,
follow the steps in reverse order. These numbers
are also used as the Identification (location) No. of
parts in figures.
(2) Parts to be removed or installed.
(3) Fig. No. showing procedure of part location
(4) Identification of parts to be removed, unhooked,
unlocked, released, unplugged, unclamped, or
desoldered.
N = Nut, L = Locking Tab, S = Screw,
CN = Connector
* = Unhook, Unlock, Release, Unplug, or Desolder
e.g. 2(S-2) = two Screws (S-2),
2(L-2) = two Locking Tabs (L-2)
(5) Refer to the following "Reference Notes in the
Ta b l e . "
Step/
Loc.
No.
Part
Removal
Fig.
No.
Remove/*Unhook/
Unlock/Release/
Unplug/Unclamp/
Desolder
Note
[1] Stand Base
Plate D1 4(S-1), 4(S-2), 5(S-3) ---
[2] Stand
Hinge D1 --------------- ---
[3] Stand
Cover D1 --------------- ---
[4] Rear
Cabinet D1 10(S-4), 4(S-5) ---
[5] Function
CBA
D1
D5 3(S-6), *CN3501 ---
[6] Chassis
Bracket D2 8(S-7) ---
[7]
Power
Supply
CBA
D2
D5
4(S-8), *CN501,
*CN701, *CN702,
*CN4501, *CN4502,
*CN4503, *CN4504,
*CLN51B
---
[8] Jack
Holder(D) D2 (S-9), (S-10), 2(S-11), 2(S-12) ---
[9] Shield
Plate D2 2(S-13) ---
[2] Stand Hinge[13] Jack Holder(A)
[20] IR Sensor
CBA
[5] Function CBA
[3] Stand Cover[14] Jack CBA
[7] Power Supply
CBA
[18] T-CON CBA
[1] Stand Base
Plate
[4] Rear Cabinet
[6] Chassis Bracket
[15] Inverter CBA
[16] Junction CBA
[10] Shield Box Top
[9] Shield Plate
[17] Panel Holder
[22] Front Cabinet
[12] DVB-T Module
CBA Unit
[11] Digital Main
CBA Unit
[19] LCD
Module Assembly
[8] Jack Holder(D)
[21] Speaker(s)
[10] Shield Box
Top D2 4(S-14), *CN3302, *CN3802 ---
[11] Digital Main
CBA Unit
D2
D5 *CN4104, *CN4105 ---
[12]
DVB-T
Module
CBA Unit
D2
D5
2(S-15), 4(S-16),
Shield Box Bottom ---
[13] Jack
Holder(A) D3 (S-17) ---
[14] Jack CBA D3
D5 7(S-18) ---
[15] Inverter
CBA
D3
D5
7(S-19), *CN1050,
*CN1100, *CN1150,
*CN1200, *CN1250,
*CN1300
---
[16] Junction
CBA
D3
D5 Desolder ---
[17] Panel
Holder D3 8(S-20), 2(S-21) ---
[18] T-CON
CBA
D4
D5
6(S-22), Shield Plate,
*CN9001, *CN9002,
*CN9005
---
[19]
LCD
Module
Assembly
D4 6(S-23) ---
[20] IR Sensor
CBA
D4
D5
2(S-24) *CN801,
*CN802 ---
[21] Speaker(s) D4 8(S-25) ---
[22] Front
Cabinet D4 --------------- ---
↓
(1)
↓
(2)
↓
(3)
↓
(4)
↓
(5)
Step/
Loc.
No.
Part
Removal
Fig.
No.
Remove/*Unhook/
Unlock/Release/
Unplug/Unclamp/
Desolder
Note

4-2 A73F2DC
[4] Rear Cabinet
[3] Stand Cover
[2] Stand Hinge
[1] Stand Base Plate
(S-2) (S-3) (S-2)
(S-3)
[5] Function CBA
(S-1)
(S-4)
(S-4)
(S-4)
(S-5)
(S-4)
(S-6)
(S-5)
Fig. D1

4-3 A73F2DC
[8] Jack Holder(D)
[10] Shield Box Top
[11] Digital Main
CBA Unit
[6] Chassis Bracket
(S-8)
(S-15) (S-13)
(S-14)
(S-7)
(S-7)
(S-7)
[7] Power Supply CBA
(S-8)
(S-9)
(S-10)
(S-11)
(S-12)
(S-8)
[12] DVB-T Module CBA Unit
Shield Box
Bottom
(S-16)
[9] Shield Plate
(S-7)
Fig. D2

4-4 A73F2DC
[15] Inverter CBA
[13] Jack Holder (A)
(S-17)
(S-19)
(S-19)
(S-18)
[14] Jack CBA
[17] Panel Holder
(S-20)
(S-20)
(S-21)
(S-20)
(S-21)
(S-20)
[16] Junction CBA
Desolder
(S-19)
(S-19)
(S-19)
(S-18)
Fig. D3

4-5 A73F2DC
[19] LCD Module Assembly
[21] Speaker
[22] Front Cabinet
(S-23)
(S-22)
(S-22)
(S-22)
(S-23)
(S-25)
(S-25)
[21] Speaker
[20] IR Sensor
CBA
(S-25)
(S-25)
(S-24)
[18] T-CON CBA
Shield Plate
Fig. D4

4-6 A73F2DC
TV Cable Wiring Diagram
CN4501 CN4502 CN4503 CN4504
Function CBA
Power Supply
CBA
Digital Main
CBA Unit
Fig. D5
CN3802
Inverter CBA
To LCD
Module
Assembly
Jack CBA
IR Sensor CBA
CN3501
CN3302
CL552B
CN552
Junction
CBA
T-CON CBA
CN9002 CN9001
CN9003
To LCD Module
Assembly
CN9005
To Speaker
CN701
CN702
CLN51A
CN601
CN301 CN302 CN303 CN304
CL552A
CN501
CN102
CLN51B
CN801 CN802
CN7001
CN7003
CN1050
CN1100
CN1150
CN1200
CN1250
CN1300
J2
J1 J5
DVB-T Module CBA Unit
CN4105
CN4104

5-1 A73F2INT
HOW TO INITIALIZE THE LCD TELEVISION
How to initialize the LCD television:
1. Turn the power off.
2. To enter the service mode, while pressing [MENU]
button, press [STANDBY-ON] button on the TV
unit.
- To cancel the service mode, press [STANDBY-
ON] button on the remote control.
3. Press [ ] button on the remote control unit to
initialize the LCD television.
4. Confirm "FF" indication on the upper left of the
screen.

6-1 A73F2EA
ELECTRICAL ADJUSTMENT INSTRUCTIONS
General Note:
“CBA” is abbreviation for “Circuit Board Assem-
bly.”
NOTE:
Electrical adjustments are required after replacing
circuit components and certain mechanical parts. It is
important to perform these adjustments only after all
repairs and replacements have been completed.
Also, do not attempt these adjustments unless the
proper equipment is available.
Test Equipment Required
1. DC Voltmeter
2. Pattern Generator
3. Color Analyzer
How to Set up the Service mode:
1. Turn the power off.
2. While pressing [MENU] button, press [STANDBY-
ON] button on the TV unit
- To cancel the service mode, press [STANDBY-ON]
button on the TV unit.
1. Initial Setting
General
Enter the Service mode.
Set the each initial data as shown on table 1 below.
Table 1: Initial Data
ITEM
BUTTON
(on the remote
control)
DATA
VALUE
PA L
SECAM
RF
BRT
[MENU(PAL SECAM
NTSC)] →[1]
124
CNT 175
CLR-R 140
CLR-B 140
SHR 112
PA L
SECAM
NTSC
CVBS
BRT
[MENU(PAL SECAM
NTSC)] →[2]
125
CNT 180
CLR-R 125
CLR-B 125
TNT 128
SHR 143
PA L
SECAM
NTSC YC
BRT
[MENU(PAL SECAM
NTSC)] →[3]
123
CNT 200
CLR-R 115
CLR-B 115
TNT 128
SHR 125
PA L
SECAM
NTSC
RGB
BRT
[MENU(PAL SECAM
NTSC)] →[4]
132
CNT 150
CLR-R 200
CLR-B 200
TNT 128
SHR 125
YUV D1
BRT
[MENU(YUV)] →[1]
125
CNT 120
CLR-R 130
CLR-B 130
TNT 128
SHR 112
YUV D2
BRT
[MENU(YUV)] →[2]
125
CNT 120
CLR-R 150
CLR-B 150
TNT 128
SHR 125
YUV D3
BRT
[MENU(YUV)] →[3]
122
CNT 125
CLR-R 155
CLR-B 155
TNT 128
SHR 112

6-2 A73F2EA
YUV D4
BRT
[MENU(YUV)] →[4]
123
CNT 125
CLR-R 150
CLR-B 150
TNT 128
SHR 130
HDMI D1
BRT
[MENU(HDMI)] →[1]
125
CNT 130
CLR-R 145
CLR-B 145
TNT 128
SHR 125
HDMI D2
BRT
[MENU(HDMI)] →[2]
126
CNT 130
CLR-R 160
CLR-B 160
TNT 128
SHR 128
HDMI D3
BRT
[MENU(HDMI)] →[3]
121
CNT 130
CLR-R 155
CLR-B 155
TNT 120
SHR 128
HDMI D4
BRT
[MENU(HDMI)] →[4]
121
CNT 130
CLR-R 145
CLR-B 145
TNT 128
SHR 128
HDMI
VGA
BRT
[MENU(HDMI)] →[5]
128
CNT 128
CLR-R 138
CLR-B 138
TNT 128
SHR 112
PC BRT [MENU(PC DVB-T)]
→[1]
122
CNT 128
DVB-T
BRT
[MENU(PC DVB-T)]
→[2]
142
CNT 130
CLR-R 160
CLR-B 160
SHR 112
BRIGHT [0] 255
NORMAL [0] 176
DARK [0] 112
LAST POWER [ -] ON
COR(C/D/S 1) [ -] →[1] 128
COG(C/D/S 1) [ -] →[2] 128
COB(C/D/S 1) [ -] →[3] 128
DR(C/D/S 1) [ -] →[4] 128
ITEM
BUTTON
(on the remote
control)
DATA
VALUE
DG(C/D/S 1) [ -] →[5] 128
DB(C/D/S 1) [ -] →[6] 128
SBR(C/D/S 1) [ -] →[7] 63
SBB(C/D/S 1) [ -] →[9] 63
COR(C/D/S 2) [ -] →[1] 128
COG(C/D/S 2) [ -] →[2] 128
COB(C/D/S 2) [ -] →[3] 128
DR(C/D/S 2) [ -] →[4] 128
DG(C/D/S 2) [ -] →[5] 128
DB(C/D/S 2) [ -] →[6] 128
SBR(C/D/S 2) [ -] →[7] 63
SBB(C/D/S 2) [ -] →[9] 63
COR(C/D/S 3) [ -] →[1] 128
COG(C/D/S 3) [ -] →[2] 128
COB(C/D/S 3) [ -] →[3] 128
DR(C/D/S 3) [ -] →[4] 128
DG(C/D/S 3) [ -] →[5] 128
DB(C/D/S 3) [ -] →[6] 128
SBR(C/D/S 3) [ -] →[7] 63
SBB(C/D/S 3) [ -] →[9] 63
COR(C/D/S 4) [ -] →[1] 121
COG(C/D/S 4) [ -] →[2] 128
COB(C/D/S 4) [ -] →[3] 130
DR(C/D/S 4) [ -] →[4] 134
DG(C/D/S 4) [ -] →[5] 128
DB(C/D/S 4) [ -] →[6] 112
ITEM
BUTTON
(on the remote
control)
DATA
VALUE