Sanyo LED-42XR11F Service Manual Download Page 20 | Manualshive

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3

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AUDIO

IC

MAX9820

The MAX9820 Windows Vista®-compliant stereo headphone amplifier is

designed for portable

Equipment where board space is at a premium. It features Maxim’s

DirectDrive® architecture to produce a ground-referenced output from a single

supply, eliminating the large output-coupling capacitors required by

conventional single-supply headphone amplifiers.

The MAX9820 features an undervoltage lockout that prevents over

discharging of the battery

During brownout conditions, click-and-pop suppression that eliminates audible

transients on startup, a low-power shutdown mode, and thermal-overload and

short-circuit protection. Additionally, the MAX9820 suppresses RF radiation

received by input and supply traces acting as

antennas and prevents the amplifier from demodulating the coupled noise.

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Summary of Contents for LED-42XR11F

Page 1: ...SERVICE MANUAL PRODUCT CODE No 1 682 351 04 PAL B G Australia FILE NO PRODUCT CODE No REFERENCE No SM0915207 LED 42XR11F LED LCD TV NTSC AV INPUT ...

Page 2: ...upgrade instructions Working principle analysis Block diagram IC block diagram Wiring diagram Troubleshooting flow chart Schematic diagram APPENDIX A Assembly list APPENDIX B Exploded View 3 5 12 15 17 18 21 22 25 Assembling the Stand WALL MOUNTING INSTRUCTIONS ...

Page 3: ... bad effect will result 2 5 If any foreign substance such as water liquid metal slices or other matters happens to fall into the module be sure to cut the power off immediately and do not move anything on the module lest it should cause fire or electric shock due to contact with the high voltage or short circuit 2 6 Should there be smoke abnormal smell or sound from the module please shut the powe...

Page 4: ...n range 20 85 Storage range 10 90 2 13 Display of a fixed picture for a long time may cause a permanent after image on the screen as commonly called ghost shadow The degree of the after image varies with the maker of LCD screen This phenomenon doesn t represent failure This ghost shadow may remain in the picture for a period of time several minutes But when operating it please avoid displaying sti...

Page 5: ... 2 Adjustment Equipments Multimeter or osciillograph VG 849 CA 21 USB DVD included HDMI 1 4 or equipments with the same functions 3 Adjustment Processes 3 1 Power voltage test According to the wiring diagram specified by Product Specification connect power board assembly data processing assembly IR Key board assembly backlight board assembly correctly supply with power press button to power on the...

Page 6: ...justment Input central signal check TV function omitted channel analog parameters control etc check earphone speakers output Input Component signal check YPbPr functions Input D SUB signal check display and all functions such as analog parameter H V center etc Check AV input output and relevant functions Default settings before ex factory Check USB multimedia port and Check accessory and packing C...

Page 7: ...setting could not change if central signal setting has any modification so please search for digital program manually by perform item DTV of menu Channel k Factory menu item Color Temp to be used for white balance adjustment l Factory menu item Store Setting Init m Factory menu item USB SW Update to be used for software updating from USB port when U disk containing updating software is inserted in...

Page 8: ...rn 921 16 step Gray move cursor to item MODE press keys and to choose item HDMI then move cursor to item TEMPERTURE and press keys and to choose COOL e Fix G GAIN adjust R GAIN B GAIN to set 14th chromatic coordinates as 272 278 f Fix G OFFSET adjust R OFFSET B OFFSET to set 4th chromatic coordinates as 272 278 g To make sure chromatic coordinates of bright scale are X 272 10 Y 278 10 and chromati...

Page 9: ...isplay 5 2 AV port Input AV signal with formats listed as Table 1 separately check picture sound and other functions Table 1 AV video signal formats No Lines per frame H Freq kHz V Freq Hz Note 1 525 15 734 15 75 59 94 60 NTSC NTSC4 43 PAL60 PAL M 2 625 15 625 50 PAL PAL N SECAM 5 3 Component port Input Component signal from VG 849 with formats listed as Table 2 separately check picture and sound ...

Page 10: ...768 60 023 75 029 78 75 VESA 12 1152 864 67 5 75 108 VESA 13 1280 960 60 60 108 VESA 14 1280 1024 63 98 60 02 108 VESA 15 1280 1024 80 75 135 SXGA 16 1360 768 47 7 60 85 5 WXGA 17 1440 900 55 9 60 106 5 WXGA Panel National only 18 1680 1050 65 3 60 146 25 WSXGA Panel National only 19 1920 1080 67 5 60 148 5 5 5 HDMI port HDMI port supports all signal formats supported by Component port Table 2 and...

Page 11: ...ts as below Photo JPEG BMP PNG Video H 264 MPEG 1 MPEG 2 VC 1 FLV Audio WMA MP3 M4A AAC 5 7 Music port depending on different models whether contain the port or not Input audio signal to side music port analog audio input from audio output equipment check audio output 5 8 Other functions check a Check timing on off sleeping time off picture sound mode OSD stereo digital audio port etc b Check pure...

Page 12: ...lease make sure option Config is ticked off during software upgrading and reset write protection after ALL 100 upgrading software is opened each time Note 2 Upgrading method with ISP upgrading instrument 1 Main board upgrading connect 4 core line of ISP to Debug port X107 on main board The Unit upgrading connect both VGA ports of ISP and main board enter into factory menu and set ISP Mode as ON 2 ...

Page 13: ...he first menu Device and choose MX25L64 manually then press Connect 4 Press Read choose upgrading file such as MERGE bin please refer to Fig 4 Fig 4 Choosing upgrading file 5 Press Auto tick off All chip program and other necessary options please refer to Fig 5 Fig 5 Options ...

Page 14: ...d 6 need repeat Note 3 Upgrading with USB 1 Make sure U disk is formatted as FAT32 2 Copy software file named as Merge bin to U disk 3 Turn on the TV set then insert U disk in USB port of the unit a First press key INPUT then press keys 2 5 8 0 in turn to enter into primary factory menu b Choose USB SW Update to begin upgrading 4 Upgrading processes A Read data from U disk while data indicator lig...

Page 15: ...r then LVDS signal is outputted to drive display panel Audio channel demultiplexing digital audio signal is processed by MSD309PX decoder and audio processor then double sound track analog audio signal stereo is outputted to MSD309PX to be processed by preamplifier acoustic effect processor and volume controller to get two parts of signals the analog part of signal is sent to earphone amplifier MA...

Page 16: ...w HDMI video signal is inputted to main chip MSD309PX to be processed by video decoder video processor and zoom controller then LVDS signal is outputted to drive display panel HDMI audio signal is sent to main chip MSD309PX to be processed by audio decoder pre amplifier acoustic effect processor and volume controller to get two parts of signals the analog part of signal is sent to earphone power a...

Page 17: ...Speakers Block Diagram ...

Page 18: ...Intermediate Frequency IF which is then sampled by an internal high resolution analog to digital converter A D for further processing The IF signals are filtered using a standard dependent high rejection channel filter and converted to a user programmable output frequency At the output of the D A converter the TV signal is low pass filtered using a high performance smoothing filter and input to a ...

Page 19: ... accepts a wide range of input data and data rates A fully programmable data path routes these channels to the internal speaker drivers The TAS5711 is an I2S slave only device receiving all clocks from external sources The TAS5711 operates with a PWM carrier between 384 kHz switching rate and 352 KHz switching rate depending on the input sample rate Over sampling combined with a fourth order noise...

Page 20: ...citors required by conventional single supply headphone amplifiers The MAX9820 features an undervoltage lockout that prevents over discharging of the battery During brownout conditions click and pop suppression that eliminates audible transients on startup a low power shutdown mode and thermal overload and short circuit protection Additionally the MAX9820 suppresses RF radiation received by input ...

Page 21: ...Power Switch Power Debug Key Board I IR Board Speaker Main board Speakers Key IR Power board Panel Backlight Board Wiring Diagram ...

Page 22: ...eck backlight board Check STANDBY circuits on power board Press key POWER on remote control or the unit check indicator Check if level of X601 PIN1 on main board is high Check if level of X601 PIN5 on main board is high Check power board Check if 5V is supplied to X601 PIN3 Check power control circuits on main board Check power control circuits on main board ...

Page 23: ...set by keys on remote control or the unit Do no channel have picture at all Enter into factory menu to initialize EEPROM then cut off main power and then turn on the TV set again check if there is picture Replace the main board Readjust the main board Press key MENU can OSD display normally ...

Page 24: ...19 25 are all high Check if level of V606 b is low Check if there is signal inputted to N607 PIN15 20 21 22 Check power voltage of N607 Check IIS signal input circuits on main board Check Reset Mute circuits of power amplifier Replace V606 Check 24V on power board Check IIC signal of N607 PIN23 24 ...

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Page 29: ...Power board ...

Page 30: ...5TU32M16DG_AC 5273216001 N108 NT5TU32M16DG_AC 5273216001 N312 MAX9820 5279820001 N607 TAS5711 5275711001 Data processing board XI6KI00101C0 N205 XC5200C 5275200002 IR board XI635KE01801 Key board XI635KH00901 Power Inverter board XI6KI0012010 Remote control XI6010900802 RC 908 0A New8 SANYO Panel XI5203428312 T420HW08 V5 ...

Page 31: ...APPENDIX B Exploded view LED 42XR11F ...

Page 32: ...ck 8 Interface baffle side 9 Interface baffle down 10 Pedestal bracket 11 Combined screws 12 Back cover assembly 13 Screws 14 Pedestal assembly 15 Touching key board assembly 16 Display panel 17 Data processing assemlby 18 Insulated slice 19 Power board assembly 20 Screws 21 Standing pole assembly 22 Combined screws Note design and specification are subject to change without notice ...

Page 33: ...ned screws 4 12 XI674251I150 Back cover assembly 1 13 XI5981330141 Screws 8 14 XI6151244000 Pedestal assembly 1 15 XI635KH00901 Touching key board assembly 1 16 XI5203428312 Display panel 1 T420HW08 V5 17 XI6KI00101C0 Data processing assemlby 1 18 XI5880584000 Insulated slice 1 19 XI6KI0012010 Power board assembly 1 20 XI5981330101 Screws 9 21 XI6156115010 Standing pole assembly 1 22 XI5982940121 ...

Page 34: ...l of the stand unplug the AC power cord You must install your TV into the stand in order for it to stand upright on a cabinet or other flat surface If you intend to mount your TV on a wall or other vertical surface you must remove the stand column If the stand is provided please read these instructions thoroughly before attempting this installation NOTE The appearance of this product in these illu...

Page 35: ...ctor to the rear of the display unit Caution the direction of the connectors should be strictly confirm to the diagram illustrated above 5 Put the back of the display unit close to the wall mounting holder insert the four wall mounting connectors into the four calabash shaped holes on the wall mounting holder Fig 5 Take out these parts from the box Wall Mounting Holder Expansion Bolt Wood Screw Co...

Page 36: ...August 2011 ...

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