RCA 26LA30RQ User Manual LCD TELEVISION Manuals And Guides 1208240L

User Manual: RCA 26LA30RQ 26LA30RQ RCA LCD TELEVISION - Manuals and Guides View the owners manual for your RCA LCD TELEVISION #26LA30RQ. Home:Electronics Parts:Rca Parts:Rca LCD TELEVISION Manual

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@

a
For qualified
service
Version
1 ,_0

personne_

Mode_o
26LASSRQ

Changing

Entertainment.

Again.
www.rca.com

only

Revision No.

Revision Date

Page

Description

1

May.24th,

All

Initial Release

Version

1.0

2011

1.1 Basic Specifications

Diagonal Display Size

26 inches

Television System

American TV standard ATSC/NTSC
VHF:2_13

Channel Coverage

UHF: 14_69

Digital Terrestrial

Broadcast

Digital Cable (64/256QAM)
Storage Temperature

system

CATV: 1_135
(8VSB) : 2_69
: 1_135

is _0°C_ + 60°C

(-4°F _+ 140°F)

Temperature
Operating

Temperature

Storage Humidity:

is 0°C_+50°C

(_32°F_+ 122°F)

Less than 85% RH (No condensation)

Humidity
Operating

Humidity:

Less than 80% RH (No condensation)

AC 110 V, 60Hz

Power Supply

Cable/Antenna

RF input

x 1

AVx 1
Video input

Component

x 1

HDMI x 4
Connection

AVx 1

Interface
Audio input

Component

x 1

PC Audio In x 1
Audio output

Headphone

Graphic input

RGB 15pin x 1

Resolution
Component/HDMI

x 1, Digital Audio Out x 1, AV x 1

1366 x 768
mode

480i, 480p, 720p, 1080i

With stand

25.9" W x 18.7"

H x 8. 0"D

Without

25.9" W x 17.2"

H x 4.3"D

Dimensions
stand

With stand

19.8LBS

(9.0KGS)

Without

15.9LBS

(7.2KGS)

Weight
Power Consumption
Version

stand

less than 80W

1.0
1

1,2 Product Function
Side Keypad

Buttons

If you cannot locate your remote, you can use the side keypad buttons on your TV to operate many TV features.

INPUT: Displays the Source Select List.
MENU:

Displays the TV Main Menu.

OH ,, : Scans up through the channel list. In the TV menu system, it acts like the up arrow on the remote control and
can be used to select menu options.
OH ,, : Scans down through the channel list. In the TV menu system, it acts like the down arrow on the remote control
and can be used to select menu options.
VOL+: Increases the volume. In the TV menu system, it acts like the right arrow on the remote control and can be used
to select menu options.
VOL-:Decreases

the volume. In the TV menu system, it acts like the left arrow on the remote control and can be used

to select menu options.
POWER (O): Turns the TV on and off.

Front Panel
Power/Standby

Indicator: Blue and red dual-color

LED. It shows red when the TV is turned off and blue when turned on.

Remote Control Sensor: Remote control IR sensor, which receives infrared ray sent by remote control.

Remote Control Sensor

'_ Power/Standby

I
-_

For more information

_

about TV function,

(blue/red)

_-

please

refer to the User's Manual.

Version 1.0
2

Indicator

1.3 Connection Interface

HEAD PHONE: Connect a 3.5mm headphone for personal audio.
Digital Audio-out: Connect a coaxial cable for digital audio output.
HDMII,
2, 3, 4: (High-Definition
Multimedia Interface) It provides an
uncompressed
digital connection that carries both video and audio data by
way of an integrated mini-plug cable.
AUDIO OUTPUT L/R: Connect double-channel
coaxial cables for analog
audio output.
Note: .DigitalAudio-out
and AUDIO OUTPUT L/R are supposed to be
connected to audio power amplifer, which provides smoother and more
powerful sound performance.
AUDIO-IN
L/R, Video In: Connect an AV device that has composite video
jacks, such as a VCR or a DVD player. To access device connected to these
jacks, press the INPUT button on your remote; then press the up/down arrow to
select AV. Press the ENTER button at last to confirm.
• AUDIO-IN L: Left audio channel connection. The left audio connector is usually white.
For mono audio sources, be sure to use the leftAUDIO INPUT.
• AUDIO-IN R: Right audio channel connection. The right audio connector is usually red.
COMPONENT
Y/Pb/Pr:
Connectadevicethathascomponentvideojacks,
such as a DVD player.
To access device connected to the Y/Pb/Prjack,
press the INPUT button on your remote; then press the
up/down arrow to select Component. Press the ENTER button at last to confirm.
• Y/Pb/Pr (Component Video): They provide good picture quality because the video signal is separated into
three components.
Use three video-grade or component video cables for the connection. When using Y/Pb/Pr, make sure you
connect left and right audio cables to the Audio L and Audio R jacks.
PC INPUT VGA: Connect your computer or other device withaVGAoutputtothisjackusinga15-pin,
Dsub cable.
PC INPUT Audio-In:
Use to obtain sound when a PC is connected to TV. Use 3.5mm stereo mini-pin cable
to connect PC to TV.
ANT/CABLE:
Connect to receive the signal from your antenna or cable via coaxial cable.
SERVICE:
For service use only. Do not connect any device.

3

2.1 General Information
GENERAL

DESCRIPTION

OVERVIEW
V260B2- P03 is a 26-inch TFT LCD cell with driver ICs and Ich-LVDS
1366 x 768 WXGA format and can display 16.7M

interface. This module supports

colors ( 6 bit+Hi FRC).

The backlight

CHARACTERISTICS
CHARACTERISTICS
Screen Diagonal
Pixels

SPECIFICATIONS
26.0

in]

1366" 768

[lines]

Active Area
Sub

ITEMS

[mm]

Pixel Pitch

575.769* 323.712
[mm]

0. 1405 (H)_0. 4215 (V)

Pixel Arrangement

RGB vertical stripe

Weight

TYP. 850

g]

Physical Size

mm]

592(W)

Display Mode
Contrast Ratio

TN,

Glass thickness

0.7/0.7

x 339.8(H)

x 1.84(D)

Normally White

800:1

Typ.

(Typical value measured
Viewing Angle

(Array/CF)
(CR>10)

[mm]

+80/ 80(H),

+80/ 70iV)

(Typical value measured
R 0.653,

Color Chromaticity

Typ.

at CMOs module)
Typ.
at CMOs module)

0.326

GO. 272, 0. 587
B 0. 150, 0. 086
W0.311,0.

320

• Please refer to color chromaticity
Cell Transparency
Polarizer
Polarizer

(CF side)
(TFT side)

]

7.0_,OTyp.
(Typical value measured
Anti Glare coating,
587.4(H)
x 335.2(w).
587.4 (H) x 335.2 (w),
Hardness:

3H

4

on p. 16

at CMOs module)
Hardness:

3H

unit is not built in

3.1 Inner Structure

Inside cabinet (front)

4

3

5

5

Version 1.0
5

Item List

1

RE3240E010

IR board

22F, 45 x 15 x 1.6 mm

(1)

2

RE0340E010

Key board

22F, 106.9 x 11.9 x 1.6 mm

(2)

3

RE01TC81XLNA0

Main board

T.RSC8.1X

4

RE46Q H 1500

Power board

FS P 150-4 H01 150W

5

RE261530458105

Speakers

8Ohm, 10W

Note: (1,2) 22F and dimensions refer to the PCB board.

3.2 Main board connection

CN9

CN25

CN17

CN5

CNA3

CNA1

(Continued in next page.)

Version 1.0
6

Jack List
Jack No,

Specification

Description

Connection

I

CN25

10 Pin 2.54mm

Main power

To Power board

C N 17

2x20 Pin 2,0ram

LVDS interface

To LCD panel

CN9

14 Pin 2.0mm

IR and keyboard jack

To IR board and keyboard

CN5

6Pin2.0mm

CNA3

4 Pin 2.54mm

CNA1

4 Pin 2.54mm

inverter Jack

To LCD

Amplifier power supply jack
Speaker jack

panel inverter

board

Note

Backtightcontrol

To power board
To Speaker

3.3 Power board connection

CON3

CON4

CON1
Jack List

CON1

2 Pin 3.96mm

AC input jack

To AC power supply

CON3

8 Pin 2.54mm

Amplifier power supply
Backlight power supply

To main board
To LCD panel backlight inverters

CON4

13 Pin 2.54mm

Main board power supply

To main board

Version 1.0
7

3,4 Connection

Diagram
@
@
>

26" LCD panel

c

Z

%

8 Pin flat cable .........

LVDS double array cable

{
%

CN17
6 Pin

flatcable

r .....

CN5

©

CON3

@

4Pin

to 4.Pin
J

2 _o
o_
-_ _

flat cable

_

CON4
CON1

AC 110V
50/60Hz

13Pin

to 10Pin

CNA3

o

CN25

_

flat cable
CN9

8Pin flat cable

CNA1

5 Pin flatcable
4Pin

Keyboard

Version

flat cable

°°°,
E]_

Left speaker

[_

R_ght

IR board

1.0
8

_

Note: Before opening the cabinet and working on the repairs, please read the troubleshooting and Q&A attached in the
user's manual, which has covered most of the problems caused by unproper using or settings to the TV set. If that does not
work, please carry out the easy troubleshooting before checking or replacing the main parts of the television. The
troubleshooting guides given below base on the situation in which the TV's functions are set and used properly.
Plus, if the easy troubleshooting can not help, please work on the repairing according to the procedures given in chapter 5,
Exception Handles.

4.1 Troubleshooting for Common Use
TV can not be turned on
• Check the connection and condition of wires and inlets that relate to power board, including the AC power inlet, the
power incoming wire, wires between power board and mainboard, etc.
o Check the diagram arround power board to see If there exists a short circuit or creepage.
• The power board may be bad. Please change the board for testing. If it cannot help, refer to the chapter 5 for more
intensive information.
• In addition, the malfunction of LCD panel can cause failure of power on. Please refer to 4.2 Troubleshooting for Displaying
for more information.

Auto turning off
o Check the sleep timer setting.
• Check the surrounding diagram of power board. The problem is most possibly caused by short circuit or wire breakage,
because this kind of malfunctions can cause excessive current, which will make the power board startup self-protection.

The screen goes black after a shorting blink
e If the TV screen can not display after the blink, that means the panel or other parts of equipment is broken (most likely by
unproper input voltage). Ensure the input voltage of every component, and then check the part that is suspected damaged.
o If this problem occurs repeatedly, check the surrounding diagram and connections of panel inverter board. Also, the
blacklight unit and LCD lamps should be checked out.

There exists afterimages after power off
• If the panel can work normally at the other time, it may be caused by bad mainboard. Upgrade to the latest software first,
if that does not work, attempt to change the mainboard.

There exists squeak when TV is working
e IListen to the squeak carefully to make sure where the noise comes from. If it is from speakers, the voice may be caused by
bad speakers. Change them for a try..
• If the noise comes from the inner parts of cabinet, it may be produced by abnormal AC current in power board. Change the
board and check its surrounding circuits for a try.
• Check the routing of wires inside the cabinet to suppress interference.

Version 1.0
9

4.2 Troubleshooting for Displaying
Note: If the troubleshooting given below can not help you, change the LCD panel for a try. But we strongly suggest you
regard changing the panel as the last step of fixing the display problem.

No display (including white screen, black screen, etc.)
• Check the power board output and main board input ports to make sure whether the TV has been turned on successfully,
because the failure in power on can lead to a no-display problem.
o If it is proved to have been electrified and turn on, check the LVDS cable first.
• Check if both of the two plugs of the flat cable between mainboard and power board have been well inserted into the slots.
Unstable power supply can also cause serious display problem.
• If the display problem only happens in one input mode, that may be caused by wrong version software. Update the new
software. If that can't help, change the main board for a try.

Screen tearing, or there exists moire on screen
• Bad LVDS cable and inappropriate panel driving voltage is still the biggest factor of this problem. So check them first.
e If the cable and voltage are correct, update the software for a try.
o Sometimes the fastening pieces can make unproper pressure to LCD panel, check them out.
• If the screen tearing happens in one or several input sources while the other source can display normally, it can be caused
by bad mainboard most likely. Please change the mainboard for a try.
• Refer to chapter 5 for more details and resolution ways.

Straight darWlight line(s) on screen
• If the bad line is very narrow, it is usually caused by LCD panel malfunction, change the panel for a try.
• If the lines link together and become a bad band, upgrade the software and then check the ports abd circuits of brokendown output mode(s).
e If the darWlight line ,or band, apprears in all the input modes, please change the LCD panel. But we suggest you check the
panel inlet board(which links the panel and mainboard though LVDS cable) first, because sometimes the liquid crystal
displaying unit is okay, while the inlet board has a transmitting problem, which also will lead to a displaying failure.
• Refer to chapter 5 for more details and resolution ways.

Color cast or interference
• If the cast or interference happens in only one input mode, check the output port(on mainboard) and transmitting network
(arround mainboard) of that mode.
• If the cast or interference happens in all the input modes, please exclude the malfunction according to easy troubleshooting
for No Display. If that can not help, refer to chapter 5 for more details and resolution ways. In addtion, most of this kind of
problems come from the bad mainboards.

Version 1.0
10

4.3 Troubleshooting for Audio
Note: Comparing with the display problem, the audio malfunctions are easier to work out. Constantly, if you have excluded
the possibility of bad speakers and bad connection of audio output, the problem generally comes from the audio processing
parts of mainboard. Please change mainboard for a try, or refer to chapter 5 for further information about repairing.

No Sound
o Check whether the speakers are broken first.
o Check the wire that links the mainboard and speakers. Watch if there is fracture or cladding material breakage.
• Check the joint of speakers and audio wire, watch if there is poor soldering or fake solder. Besides, the polarity mistake
can also lead to audio problem.

Volume too low
o Check whether there is a jam at the sound hole in front cabinet.
• Check whether one or more speakers are bad.

Sound channel loss or confounding
• Check whether the audio wires are installed reversedly. The left channel wire should be white and the right channel wire
is red.
• Check the audio output socket of mainboard to see whether it is wrongly inserted. If not, the mainboard audio output module
may be bad, refer to chapter 5 for more details and resolution ways.
• If the connection is stable and right, the mainboard audio output module may be bad, refer to chapter 5 for more details
and resolution ways.

Noise
o Check if there is anything should not exist in the speaker hollow space (such as screws).
• Check if the antihunting EVA is broken or missing.
• Check if the speakers are bad.

4.4 Troubleshooting for Keyboard
No key can work
e Check the wire between mainboard and keyborad, watch if there is fracture or cladding material breakage.
• Check the joint of mainboard and keyboard wire, watch if there is poor soldering ofrfake solder.
• Check the resistances that locate on the keyboard PCB. Watch if there is wrong or broken ones. Also, the poor soldering
of fake solder should be concerned and checked carefully.
o Check the other components of keyboard(such as capacitances and microswithes) are wrong or bad.

Version 1.0
11

Keys are sunken
• Check the screws that fasten the keyboard to the cabinet. They may be lost or getting loose.
• The key set may be bad, change them.

There is a reacting delay when operating the keys
o That is usually caused by bad keyboard, change it for a try.

Functions of keys are out of order
o Check the keyboard to see whether there is a short circuit between each soldering joint.
• Check all the resistances on PCB board.
o If a key is supposed to be able to achieve more than one functions, but it can achieve not all of them, that is usually
caused by wrong software. Please update the latest and correct software for a try.
• If you can't ensure where the problem comes from, change the keyboard for a try. If that still can't help, refer to chapter 5
for more details and resolution ways.

4.5 Troubleshooting for Remote Control
Note: If the troubleshooting can not help, please change the RC board. If that still can't solve the problem, please refer to
chapter 5 for more details and resolution ways with a will to mainboard repairing.

The RC (remote control, the same below) does not work
• Check the wire between mainboard and RC board, watch if there is fracture or cladding material breakage.
• Check the joint of mainboard and RC board wire, watch if there is poor soldering or fake solder. Also, the short circuit
can lead to this problem, too.
o Check the infrared senser that locates on the keyboard PCB. Watch if it is wrong or broken. Also, the poor soldering of
fake solder should be concerned and checked carefully.
• Check the other components of RC board are wrong or bad.

The LCD displays light in wrong color
• The short circuit is the most probable causation factor of this proble. Check the wire and joints for a judgement.
• Check the cable that links mainboard and RC board, watch if it is inserted with wrong location(similar with left-right channel
wire fault for audio).
o Check the LCD assembling, watch if its pins are in wrong location.

Version 1.0
12

Note: The exception handles are prepared for qualified personal only.

5.1 Display Exceptions
5,1.1 Black screen and no display
Note: If the troubleshooting guide can not help you with the obviation of faults, please change the non-conforming
materials to rework.

Can the LED

No

indicator light?

Does the pin1
of CN25 have 5VSB?

Yes

the other

Yes

power supply IC's
voltage OK?

is UI6 FLASH
upgrading failed?

No

Yes

Yes
Check power board or
connecting wires

main board
I orhange
the power IC

FLASH is bad, change
FLASH or main board

1

Yes

_ower board work
iormal after turning on the

Change

No

<

Change

CheckU16
and FLASH,
change the FLASH

Is the p2 of
CN25(Pon) high

Ch20 _t hu8_i_n tbr°;cimrC
_itcft[°n_ e 1
them or change main board

Version

m

1

1.0
13

the bad RNL

1

U8 or main board

5,1 DispJay Exceptions
5.1.2 White screen

-

White screen

"_

Do pin1-3 of
CN17have 12Vdrvi

_

No

voltage?

No

<..

Check

the voltage

i

>

Change

Q8 or R27

_o___
i
Check

Yes

Check the LVDS
signal of CN17 open
or s_ort c rcu t?

Sho_

the power

or main

board

if the open
circuit is caused by
bad PCB

Yes

Check

RN6_RN10

$
ChangeU8

Version

board
ChangeU8

is normal?

1

4
1

ChangeRN6-RN10

1.0
14

1

i
i

5.1 Display Exceptions
5.1.3 Dazzling screen

No

_

Reset the driving voltage

No

Check if the LVDS
cable is bad

Change LVDS cable

Yes

e if the
panel is bad?

Yes

]
Change

LCD panel

J

No

Change main board

Check

the power supply and

clock circuit

of U8

Version 1.0
15

¢hk"
_Upgrade
P7

1

t
firmware or adjust
LVDS MAP

5,2 Audio Exceptions
5,2.1 No sound (completely)
No sound

1

No

Check if there
is audio input

Check

external

equipment

Yes

No

<_,

volume are

Set the mute and volume

1

Yes

Yes

Does CNA1
_ve output signa

Check

the TV speakers

1

No

if the
p13,p14,p37,p38
UA1 is ok?

Audio

of

power

is bad, change

supply

circuit

1

1

main board

Yes

Check ifp34of
UAI have high
tevel voltage

No

Check

the MUTB/STB

if bad,

change

circuit,

main board

Yes

Checkifthe
plg,
p32 of UA1 have
signal input?

Yes

Check if p1,2
p35,36 of U20
have output wave

Yes

Circuit between U8 and CNA1
is bad, change main board

No

Change

No

Circuit between U8 and UA1
is bad, change main board

Change U8

change
Audio
input main
circuitboard
is bad,

Version

1.0
16

UA1

1

5,2 Audio Exceptions
5.2.2 No sound (TV)

Refer to NO SOUND

1

Yes

Check if the circuit
between
T1 and U8 is OK

No

Change

Version

T1 tuner

1.0
17

1

Yes
Change U8, if that doesnt
work, change main board

5.2 Audio Exceptions
5.2.3 No sound (HDMI)

1
Is theHDMI
signalOK?
source

_]]_1 Unsupported signal, change
input signal of HDMI device

1

No

Yes

No

Check if the PC/AV
sound is normal

Refer to NO SOUND

Yes

<_

Is the EDID(1)

Upgraded firmware

Note (I): EDtD means Extended Display Identification Data

Version

1.0
18

Yes>_l

_

Change U7 or U8
or main board

5.3 Function Exceptions
5.3.1 TV function

rV can't scan channel/no picture_'y_

Check -['v' RF signal
(antenna, cable)

TI power supply circuit
change main board

Check if p7
of T1 have 120data

No

is bad

I2C network is bad,
change main board

Yes

Check if p12 ofT1
have normal voltage

No

IF(l) or AGC(2) circuit is most
likely bad, change main board

Yes

No

ofT1 has output
signal

T1 tuner

is bad, change

T1

Yes

Check

if
between T1 output
U8 is OK

No

Change main board

JYes
Change

Note: (1) iF: Intermediate Frequency
(2) AGC: Automatic Gain Control

Version

1.0
19

U8

1

5.3 Function Exceptions
5.3.2 HDMI no picture

HDMI no picutre or bad picture_'_

Redo the soldering

No

No

i

Change U8

ha

Maintain u7 external
apparatus

1

Version 1.0
20

5.3 Function Exceptions
5.3.3 YPbPr no signal

YPbPr no signal

J

]
Check the YPbPr AV device |
or YPbPr cables

J

U8 surrounding circuits
are bad, change main board

U8 front circuits
are bad, change main board

work, change main board

Version 1.0
21

REC7 series main board has a USB SERVICE port, which is reserved for service use only. Please upgrade the firmware
according to the instruction below.

6.1 Direct upgrading (do no need normal display)
STEP1
Get an empty USB disk with size not larger than 2GB, copy firmware file (CompBase.bin, or AlICompBase.bin) to the root
directry of disk.
Note: the size of USB disk can not be larger than 2GB, and before copying the firmware file, make sure the disk is empty.
And the file must be placed in the root directry.

STEP 2
Turn off the TV, insert the USB disk into the SERVICE jack on the side panel of TV and then turn on the TV. After turned on,
the TV's LED indicator will shine red and blue alternately. Wait for about one and half a minute to accomplish the upgrading.
Note: DO NOT power off or unplug the TV while upgrading.

6.2 Factory upgrading (need normal display)
STEP1
Get an empty USB disk with size not larger than 2GB, copy firmware file (AIICompBase.bin only) to the root directry of disk.
Note: the size of USB disk can not be larger than 2GB, and before copying the firmware file, make sure the disk is empty.
And the file must be placed in the root directry.

STEP 2
Turn on the TV, insert the USB disk into the SERVICE jack on the side panel of TV. Then press the remote control buttons
"MENU"--_ "1147" to enter factory menu (see below).

STEP 3
Choose "USB UPDATE" and press OK. If there are "CompBase.bin"
and "AlICompBase.bin" in the disk at the same time, be sure to select
"AIICompBase.bin" to update. The upgrading phenomenon is the same
to direct upgrading.
Note: DO NOT power off or unplug the TV while upgrading, otherwise
the upgrading will fail, and the main board will be unable to upgrade
normally any more.

Version 1.0

Main Board (PCB)

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Create Date                     : Fri Aug 24 04:16:42 2012
Author                          : 
Title                           : 
Subject                         : 
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