Service Manuals, User Guides, Schematic Diagrams or docs for : CHANGHONG LED LED32HTC2000E JUC7.820.00084054

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JUC7.820.00084054


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       LED COLOUR TV

MAINTENANCE MANUAL




      CHASIS: HLS49JMSD308B
         MODEL: LED32HTC2000E
             (JUC7.820.00084054)




Please read this manual carefully before maintenance
Chapter1 Safety and notes..........................................................................................................................................................3
    1-1 Installation notes..........................................................................................................................................................3
    1-2 Attention points of operation and using .......................................................................................................................3
    1-3 Storage notes................................................................................................................................................................3
    1-4 Dismantling notes ........................................................................................................................................................3
    1-5 High-voltage warning ..................................................................................................................................................4
Chapter2 whole machine standard and terminal functions ........................................................................................................4
    2-1 Basic standard ..............................................................................................................................................................4
    2-2 Introduction of terminals(practicality photos) .............................................................................................................5
Chapter3 Main chip functions and the introductions of power supply ......................................................................................6
    3-1 Main IC and functions of HLS49J ...............................................................................................................................6
    3-2 Pin function description of HLS49J chip.....................................................................................................................7
         3-2-1 MSD308B recommended operating power conditons...................................................................................7
         3-2-2 M25P16 16Mbit(2M x 8bit) brief introduction: ............................................................................................7
         3-2-3 SY8009B DC-DC brief introduction:.........................................................................................................7
    3.3 Brief introduction of power supply ..............................................................................................................................8
Chapter4 The chassis frame diagram, mainboard power supply systems, mainboard interface definition................................8
    4-1 Power supply system ...................................................................................................................................................9
         4-1-1 The composition and distribution of the TV power supply ..............................................................................9
         4-1-2 Pin voltage of the voltage adjustor on the mainboard ....................................................................................10
         4-1-3 Interface definition .........................................................................................................................................11
Chapter5 Software upgrade instructions ..................................................................................................................................11
    5-1 Software upgrade tooling---there are two kinds of using upgrade tooling ................................................................11
    5-2 Software upgrade introduction...................................................................................................................................12
Chapter6: Classical accident maintenance procedures and examples......................................................................................16
    6-1 The thinking of don't boot .........................................................................................................................................16
    6-2 Common problems for your reference.......................................................................................................................16
Chapter7 High voltage and high current wearing parts list......................................................................................................17
Chapter8 Factory mode parameter setting instructions and notes............................................................................................17
    8-1 Enter into the factory mode .......................................................................................................................................17
    8-2 Setting method of factory menu.................................................................................................................................19
Chapter9 Instructions of HLS49J module Circuit Schematic Diagram ...................................................................................20
Appendix  Circuit Schematic Diagram ..............................................................................................................................20
                                    Chapter1 Safety and notes
1-1 Installation notes
(1) Please don't beat or rub, scratch the surface of the LED screen heavily, don't touch it with your hand
casually.
(2) When the screen is dirty, please clean it with absorbent cotton or cotton cloth slightly.
(3) Please clean it timely when water or other viscosity pollution fall, which may make the LED face or
color change.
(4) Please don't make the LED screen shaked by strong external force.

1-2 Attention points of operation and using
(1) Please unplug the power cable before moving the LED screen.
(2) Please don't change the original setting of the mainboard's, if not, the brightness and white balance
etc. may not meet the specification.
(3) The radiation of a long time using in the room temperature is larger than the low temperature.
(4) Please note that the long displaying image may remain at the top when shutdown the machine.
(5) Please avoid the impact from the mobile phone to protect your TV.

1-3 Storage notes
(1)When stored for a long time, please keep the temperature between 0to 40,don't expose the TV to
the strong sunlight, the humidity should be less than 85RH.
(2)Please don't put your TV under high humidity and high temperature environment, for example, the
temperature: 60, and the humidity: 85%RH.
(3)Please don't put your TV under low temperature environment, for example, the temperature lower
than -25.

1-4 Dismantling notes
(1)As LED screen is easy to be damaged, while dismantle, please attention to protect.
(2)Please attention the position of each screw when dismantle, in case to beat the wrong position when
install, if not, it may lead to crack or slide of the face frame.
(3) If you need to dismantle the power board or the mainboard, please attention the position and
direction of each line, especially the direction of the screen line, in case of causing accident when install.
Before dismantle, we can take some photos of the line route for the comparison of installing.
(4)After check and maintenance, please assure that there is no foreign body in the machine when install.

1-5 High-voltage warning
The high-voltage of the LED screen is generated by the power supply board, without attention to
exposure to the high voltage, one may meet a serious electricity shock.



             Chapter2 whole machine standard and terminal functions
2-1 Basic standard
                        Item                                 Standard
                   Model Name                 M320X13-E1-A(G3)
                   visual area                32 inchesopposite angles
                   aspect ratio               16:9
                   resolving ratio            1,366x768 Pixel
                                                                                  the parameters are for
                   visual area H x V          697.685(H) x 392.256(V)             reference only,the specific
                   display colour             8 bit, 16.7M million                should accord to the standard
 LED Panel         Contrast Ratio             30001                               of the screen practicality of
                   brightness                 280cd/m



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