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
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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.
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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.
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2 Product Function Specifications
Refer to the User’s manual
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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).
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4. Block Diagram
4-1 Main board
1)26’’ and 32’’ with AV2 in/AV out interface
2) 26’’ and 32’’ with SCART interface
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4-2 Power board
1) Power board of 26’’ and 32
2)Another Power board of 26’’ and 32
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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.
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