Rolsen RL-20S10, RL-26B01 Schematic

LCD TV

Service Manual

Chassis MST9E19

Rolsen

RL-26B01

Contents

Contents....................................................................................................................2

1. Product Safety Servicing Guidelines...................................................................3

2. Product Function Specifications..........................................................................5

3. Lcd Panel Spec......................................................................................................6

3-1 General Description ...................................................................................6

4. Block Diagram ......................................................................................................7

4-1 Main board ...................................................................................................7

4-2 Power board ...............................................................................................8

5. Service Mode And Adjustment ............................................................................9

6. Software Updating.............................................................................................13

6-1、Updating Tool ..........................................................................................13

6-2、Software Updating Operation.................................................................14

7. Troubleshooting .................................................................................................24

8. Ciruit Diagram ....................................................................................................25

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 2 -

1. Product Safety Servicing Guidelines

WARNING:
Service should not be attempted by anyone unfamiliar with the necessary
precaution on this receiver. The following are the necessary precaution to be
observed before serving this chassis.

1. Since the power supply circuit of this receiver is directly connected to the AC

power line, an Isolation transformer should be used during any dynamic
service to avoid possible shock hazard.

2. When replacing a chassis in the cabinet, always be certain that all the

protective devices are put back in place, such as:
non-metallic control knobs, insulating cover, shields, isolation
resistor-capacitor network etc.

3. When replacing parts or circuit boards, disconnect the power cord.

4. When replacing a high wattage resistor (oxide metal film resistor) on the

circuit board, keep the resistor (1/2in) away from circuit board.

5. Connection wires must be kept away from components with high voltage or

high temperature.

6. If any fuse in this LCD TV receiver is blown, replace it with the FUSE

specified in the chassis part list.

The lightning flash with arrowhead symbol, within an

equilateral triangle is intended to alert the user to the presence of
uninsulated dangerous voltage within the products enclosure 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 user to the presence of important operating and

maintenance (servicing) instructions in the literature accompanying the set.

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 3 -

Many electrical and mechanical parts in the chassis have special
safety-related characteristics. These characteristics are often passed unnoticed
by a visual inspection. When replacement parts are required, be sure the
service technician uses replacement parts specified by us that have the same
characteristics as the original part. Unauthorized substitutions may result in fire,
electric shock and injury to persons or other hazards. This LCD TV product
should be situated away from heat source such as radiation, stoves, or other
product that produce heat.

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 4 -

2 Product Function Specifications
Refer to the User’s manual

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 5 -

3. LCD Panel Spec
3-1 General Description

These Panel is a TFT LCD module supports 1366 x 768 WXGA format and can

display true 16.7M colors (8-bit colors).

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 6 -

4. Block Diagram

4-1 Main board

1)26’’ and 32’’ with AV2 in/AV out interface

2) 26’’ and 32’’ with SCART interface

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 7 -

4-2 Power board

1) Power board of 26’’ and 32

2)Another Power board of 26’’ and 32

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 8 -

5. Service Mode And Adjustment

LCD****: Use the remote control, first open MAIN MENU with MENU button,
and choose PICTURE with the CHANNEL UP/DOWN button, then choose
the Brightness with VOLUME UP, while Brightness value is 50, press 0、5、
3、2,you can enter factory menu.
LCD****EU: Use the remote control, first open MAIN MENU with MENU
button, and choose SOUND with the CHANNEL UP/DOWN button, then
choose the Balance with VOLUME UP, while Balance value is 0, press 0、5、
3、2,you can enter factory menu.

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 9 -

Fac. Menu
Note:

1) We have set the best value before delivery.

2) Do not change any item except the following sheets.

Factory Menu

White Balance

Auto Test

Auto Calibration

LOGO

OSD Language

Country

Option

Factory Init

Test Pattern

Version:

White Balance: To change white balance

Auto Calibration

Auto Color

Color Temp. Standard

RED COLOR 128

GREEN COLOR 128

BLUE COLOR 128

White Balance

R DRV 10
G DRV 10
B DRV 10
R CUT 128
G CUT 128
B CUT 128
BRIGHT_H 80
CONTRAST _H 80
BRIGHT_L 40
CONTRAST_L 40

LOGO

NULL
HISENSE
WELCOME

- 10 -

PDF created with pdfFactory Pro trial version www.pdffactory.com

Option

SOURCE TV

BRIGHT 0 10

BRIGHT 50 100

BRIGHT 100 135

CONTRAST 0 60

CONTRAST 50 125

CONTRAST 100 155

TOFAC M

HDMI Cable Standard

Factory Init

QingDao
HuangDao
Guiyang
Hungary
France
Austria
CLEAR PROTECTLY
CLEAR UNPROTECTLY

Design Menu

Picture Mode

Sound Mode

Sound Settings

Power Save

PIP Option

EMI

MOVESHARPNESS

LipSync

- 11 -

PDF created with pdfFactory Pro trial version www.pdffactory.com

Picture Mode

Standard Brightness 50

Contrast 50
Colour 50

Bright Brightness 60

Contrast 60
Colour 55

Soft Brightness 45

Contrast 45
Colour 45

Sound Settings

VOLUME 0 128
VOLUME 1 79
VOLUME 20 36
VOLUME 40 31
VOLUME 100 17
TVPRE SCALER 2
VOLUME SCALER 0

Sound Mode

Standard 120Hz 12
500Hz 10

1.5KHz 11
5KHz 8
10KHz 15
Music 120Hz 19
500Hz 11

1.5KHz 12
5KHz 14
10KHz 20
Speech 120Hz 4
500Hz 10

1.5KHz 12
5KHz 7
10KHz 5

- 12 -

PDF created with pdfFactory Pro trial version www.pdffactory.com

6. Software Updating
6-1、Updating Tool

- You can update the software through a special tool (show as below)

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 13 -

6-2、Software Updating Operation

1、Connect the Debug board to the TV use VGA interface, then connect the
Debug board to the computer, just as the pictures showing.

2．Set the ISP_TOOL4.0.9 -------only for the first time update.

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 14 -

DLPORTIO.dll and FTD2XX.DLL must be in the same folder

1) Find the folder where the ISP_TOOL4.0.9 lies in.
Note: DLPORTIO.dll and FTD2XX.DLL must be in the same folder.

2) Double click the ISP_TOOL4.0.9 icon, and then a dialog will show as
below.

3) Click the Config button. And then a dialog will show as below.

You should set the Config like what the picture shows.

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 15 -

- 16 -

PDF created with pdfFactory Pro trial version www.pdffactory.com

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 17 -

4) After you have finished all above, you should click the Apply button to

complete the configuration.

3. Turn on the TV, then we can update.

4. Double click the ISP_TOOL4.0.9 icon, and then a dialog will show as
below.

5. Click the Read button. And then do as shown below.

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 18 -

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 19 -

6. Find the update file in your computer.

7. Double click the update file. A dialog will show as below.

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 20 -

8. Click the Auto button. And then do as shown below.

- 21 -

PDF created with pdfFactory Pro trial version www.pdffactory.com

9. Click the Connect button. And then do as shown below.

10. Click the Run button.

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 22 -

11. When the update is finished, a dialog will show as below.

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 23 -

7. Troubleshooting

No. Trouble Measure

Turn on the TV, The LED is red,

1

no display on screen
Turn on the TV, The LED is blue,

2

but no picture or/and no sound
In TV state, can not to tuning You should replace the main

3

No teletext You should replace the main

4

No sound You should replace the main

5

can not to updating software You should replace the main

6

No reaction with PC You should replace the main

7

Replace the main board or
updating the software.
You should replace the main
board.

board.
board.

board.

board

board

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 24 -

8. Circuit Diagram

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 25 -

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 26 -

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 27 -

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 28 -

PDF created with pdfFactory Pro trial version www.pdffactory.com

- 29 -