Haier LE49K6500U Service Manual

1-3-6 Safety Check after Repairment- 04 -Service ManualModel No.:&RQ¿UP WKDW WKH VFUHZV SDUWV DQG ZLULQJ ZKLFK ZHUH UHPRYHG LQ RUGHU WR VHUYLFH DUH SXWin the original positions, or whether there are the positions which are deteriorated aroundthe serviced places serviced or not. Check the insulation between the antenna terminal orexternal metal and the AC cord plug blades. And be sure the safety of that.General Servicing Precautions1. Always unplug the receiver AC power cord from the AC power source before;a. Removing or reinstalling any component, circuit board module or any other receiverassembly.b. Disconnecting or reconnecting any receiver electrical plug or other electricalconnection.c. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver.CAUTION: A wrong part substitution or incorrect polarity installation of electrolyticcapacitors may result in an explosion hazard.2. Test high voltage only by measuring it with an appropriate high voltage meter or othervoltage measuring device (DVM, FETVOM, etc) equipped with a suitable high voltageprobe.Do not test high voltage by "drawing an arc".5. Do not defeat any plug/socket B+ voltage interlocks with which receivers covered by thisservice manual might be equipped. 8VH ZLWK WKLV UHFHLYHU RQO\ WKH WHVW ¿[WXUHV VSHFL¿HG LQ WKLV VHUYLFH PDQXDOCAUTION: 'R QRW FRQQHFW WKH WHVW ¿[WXUH JURXQG VWUDS WR DQ\ KHDW VLQN LQ WKLV UHFeiver.3. Do not spray chemicals on or near this receiver or any of its assemblies.4. Unless specified otherwise in this service manual, clean electrical contacts only byapplying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick orcomparable non-abrasive applicator; 10% (by volume) Acetone and 90% (by volume)isopropyl alcohol (90%-99% strength).CAUTION: 7KLV LV D ÀDPPDEOH PL[WXUH8QOHVV VSHFL¿HG RWKHUZLVH LQ WKLV VHUYLFH PDQXDO OXEULFDWLRQ RI FRQWDFWV LV QRW UHTXLUHGCapacitors may result in an explosion hazard.6. Do not apply AC power to this instrument and/or any of its electrical assemblies unlessall solid-state device heat sinks are correctly installed.7. Always connect the test receiver ground lead to the receiver chassis ground beforeconnecting the test receiver positive lead.Always remove the test receiver ground lead last. Capacitors may result in an explosionhazard.9. Remove the antenna terminal on TV and turn on the TV.10. Insulation resistance between the cord plug terminals and the eternal exposure metalshould be more than Mohm by using the 500V insulation resistance meter.11. If the insulation resistance is less than M ohm, the inspection repair should be required.If you have not the 500V insulation resistance meter, use a Tester. External exposuremetal: Antenna terminal Headphone jack

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Frequently asked questions

To connect a DVD player or Set Top Box to the Haier LE49K6500U TV using HDMI, follow these steps: 1. Connect the source device to the HDMI port of the TV with an HDMI cable (not supplied with the product). 2. No separate audio connection is necessary. To use, select the HDMI input source in the input source option of the Select Main source menu. If the source device supports Auto HDMI, the output resolution will be automatically set to 1280x720p. If not, adjust the output resolution of the source device to 1280x720p for the best picture quality.

No, you should only use the attached power cord provided with the TV. Using a different power cord may cause issues with the operation of the TV.

The power consumption of the 12V_Normal mode is 3.5A.

The Standby Power 3.3V, labeled as +3.3V_Standby, VCC3.3VA, and CORE Power, is a critical component that ensures the television remains in a low-power state when not in active use. This allows for quick startup and minimal energy consumption during standby mode.

The manual lists various voltage designations such as VDDC, VDDC_CPU, DVDD_NODIE, AVDD_NODIE, DVDD_DDR, AVDD_DDR3_1V5, AVDD_DDR_VBP_A_DM, AVDD_DDR_VBN_A_DM, AVDD_DDR_VBP_B_DM, AVDD_DDR_VBN_B_DM, AVDD_DDR_LDO_B, AVDDL_MOD, AVDD_NODIE, DVDD_DDR, AVDD_DDR_A, AVDD_DDR_B, AVDD_DDR_DRAM, AVDD_DDR_VBP_A, AVDD_DDR_VBN_A, AVDD_DDR_LDO_B, AVDDL_MOD, AVDD15_MOD, AVDD_MOD, AVDDL_MHL3, AVDD3P3_MHL3, VDDP_NAND_A, VDDP_NAND_C, AVDD_DADC, AVDD_DMPLL, AVDD33_LAN, AVDD_USB, AVDD_USB3, AVDD33_ADC, AVDD_AU33, VDDP33, AVDD_LPLL, AVDD_PLL, VDDP_3318_A, and VDDP_3318_C. Each of these designations corresponds to specific pins on the board, which are detailed in the manual.

The eMMC is connected using specific pins and voltages. For example, EMMC_CLK is connected to W5, EMMC_CMD to H3, and EMMC_D0 to D0. Ensure that the voltage levels are correct, such as +3.3V_EMMC for the eMMC power supply.

The TF Card Reader is connected to various pins including SD-D2, SD-D3, SD-CMD, SD-CLK, SD-D0, SD-D1, SD-CDZ, and SD-WP#. These pins are associated with specific resistors and capacitors for proper functioning.

The HDMI1_HPD (Hot Plug Detect) and HDMI2_HPD pins are used to detect when a device is connected to the HDMI ports. This allows the TV to automatically switch to the correct input source when a device is plugged in.

The HDMI1_SCL (Serial Clock) and HDMI1_SDA (Serial Data) pins are used for communication with HDMI devices. The HDMI1_Detect pin is used to detect the presence of a connected HDMI device. These pins work together to facilitate communication and detection of HDMI devices connected to the TV.

The PCMCIA interface on the Haier LE49K6500U includes various signals such as PCM_IORD_N, PCM_IOWR_N, TS_SYNC, TS_D0 to TS_D7, TS_MOCLK, PCM_RESET, and PCM_WAIT_N. These signals are used for data transfer, synchronization, and control operations related to the PCMCIA card.

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