Hisense K15 Series Service Manual Download Page 29 | Manualshive

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5.3.2 Troubleshooting for Function Key

Buttons does not work

Check switches

Check key board

Check Key BD cable

Change Key BD

Replace main board

Check solder connections and

see if any switches are stuck.

Replace Key BD

OK

YES

YES

NO

YES

NO

NO

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Summary of Contents for K15 Series

Page 1: ...LCDTelevision Service Manual Chassis MSD308PX K15 Series Ver 1 1 Hisense Electric Co Ltd September 2011 ...

Page 2: ... Wiring Diagram 13 3 Factory Service OSD Menu and Adjustment 14 3 1 To enter the Factory OSD Menu 14 3 2 Factory OSD Menu 14 4 Software Upgrading 16 4 1 Upgrading with the ISP_TOOL 16 4 2 Upgrading with the USB 20 5 Circuit instruction 21 5 1 Power assign and block diagram 21 5 2 Image and signal process 22 5 3 Troubleshooting 28 6 Explode View 35 7 Schematic circuit diagram 35 ...

Page 3: ...ations require the use of tools specially designed for the purpose The special tools should be used when and as recommended It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel The possibility exists that improper service methods may damage the equipment It is also importa...

Page 4: ...st Use of substitute replacement parts which do not have the same specified safety characteristics may create shock fire or other hazards Under no circumstances should the original design be modified or altered without written permission from Hisense Hisense assumes no liability express or implied arising out of any unauthorized modification of design Serviceman assumes all liability 1 1 2 All ICs...

Page 5: ...n cord receptacle or the outlet unless the blades can be fully inserted to prevent blade exposure To prevent electrical shock match wide blade or plug to wide slot fully insert 1 1 4 When replacement parts are required be sure to use replacement parts specified by the manufacturer or have the same characteristics as the original part Unauthorized substitutions may result in fire electric shock or ...

Page 6: ... as water metal or liquid gets inside the panel module immediately turn off the power Continuing to use the product may cause fire or electric shock 5 If the product emits smoke and abnormal smell or makes an abnormal sound immediately turn off the power Continuing to use the product it may cause fire or electric shock 6 Do not disconnect or connect the connector while power to the product is on I...

Page 7: ...ervice The work procedures shown with the Note indication are important for ensuring the safety of the product and the servicing work Be sure to follow these instructions Before starting the work secure a sufficient working space At all times other than when adjusting and checking the product be sure to turn OFF the POWER Button and disconnect the power cable from the power source of the TV during...

Page 8: ...ult in the surface of the panel being scratched by foreign matter When handling the circuit board be sure to remove static electricity from your body before handling the circuit board Be sure to handle the circuit board by holding the large parts as the heat sink or transformer Failure to observe this precaution may result in the occurrence of an abnormality in the soldered areas Do not stack the ...

Page 9: ... servicing Also verify that the screws parts and cables removed for servicing purposes have all been returned to their proper locations in accordance with the original setup 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 const...

Page 10: ... 10 2 Product Specifications 2 1 Specification LHDN32K15 16CEU ...

Page 11: ... 11 LTDN24K15CEU ...

Page 12: ... Main board image is only take LHDN32K15CEU for example others please refer to the actual units to determine the boards Main IC MSD308 DDR2 512M DDR2 512M Flash Digital Audio AMP LVDS OUT Y Video PB PR L R VGA PC Audio IN USB HDMI Earphone SCART ...

Page 13: ...am LHDN 32K15CEU Model Panel Mode LVDS Main Panel LTDN24K15CEU M236H3 LA2 V236H1 LE2 HX2 2X20KLB400P CMO ROH LHDN32K15 K16CEU HE315DH E02 S3 ROH HX2 2 15KLB400P HS 1 ROH LHDN32K15CEU 1 HE315DH E06 S3 ROH Same to LHDN32K15 ...

Page 14: ...Remote Note 1 In the Factory Menu item Function TOFAC you can select M or U default is U M Means you can enter factory mode with factory RC or user RC U Means you can enter factory mode only with user s RC 2 Mode M is only used for factory production b With user s RC Power on the TV 1 Press Menu button and call up User OSD Menu 2 Select Sound Balance item 3 Press number key 1 9 6 9 in sequence whe...

Page 15: ...Mode Picture Curve Audio Curve SSC Adjust Saving Mode Overscan Not Stand Factory Menu White Balance ADC Calibration Funtion Lnit Test Pattern Version Clear protectly Clear unprotectly Function TO FAC M or U Power Mode Save Software Update LOGO Hisense OSD language English WDT ON UART Debug None White Balance R DRV G DRV B DRV R CUT G CUT B CUT Color Temp Medium Panel Set B1 ...

Page 16: ...32 4 pin the other USB port to the compute 4 1 2 Install the ISP_TOOL4 5 0 4 only for the first time update 1 The software is upgraded by a burning tool ISP_TOOL exe 2 Find the folder where the ISP_TOOL4 5 0 4 lies in There are three folders files in this folder together DLPORTIO dll and FTD2XX DLL must be in the same folder 3 Double click the ISP_TOOL4 5 0 4 icon and then a dialog window will sho...

Page 17: ...ll show as below Draw on the front of Use USB Port Type setting is USB Base Addr setting is 0x38C ISP Slave Address choose 0x92 Serial Debug Slave Address choose 0xB2 5 Click the Connect button if appear the following figure It indicates that the ISP_TOOL has ...

Page 18: ...wing figure It indicates that the ISP_TOOL has not connected Please click the DisCon button and Connect button to connect 6 Click the Read button Choose the correct update file 7 After the update file has been chosen successfully Click the Auto button and choose parameters as following ...

Page 19: ... 19 8 Click the Run button and wait update end If show any error message then do Dis Con Connect and click the Run button again till show the following dialog window ...

Page 20: ...K it will show a confirm message box Press button to select yes in the confirm message box to start automatic update 5 Then it will update the software automatically Please don t power off during the updating process 6 After the software is successfully upgraded TV SET will restart automatically Note 1 In some TV SET Software Update USB item maybe in OPTION menu 2 After updating you must confirm t...

Page 21: ... 5VAIN 1 8VA supply power for N41 DDR N45 DDR is converted by N15 from 5VAIN e VCC_A supply power for N17 audio amplifier is converted by N42 from 12V_IN 5V_Tuner supply power for Tuner is converted by N16 from 12V 5V_USB supply power for USB interface f VCC Panel supply power for Panel is converted by N14 from 12V_IN Block diagram N41 N45 L46 N46 AO4459 N14 VCC Panel N13 N3 N15 FOR STANDBY FOR ST...

Page 22: ...ncy and simulation intermediate frequency are processed by Tuner U42 from RF Signal Transport Stream is demodulated directly by main IC from Digital intermediate frequency then enter PCMCIA card to decipher later return the main IC The simulation intermediate signal that has passed amplification and surface acoustic wave filter to get intermediate frequency enters the main IC After processed by ma...

Page 23: ...l of XS7 then enter U46 The RGB video signal of SCART input the Terminal of XS7 then enter U46 SC FB AUR_AV1 AV_ROUT SC FS SC B AUL_AV1 AV1 AV_out SC R AV_LOUT SCART_MODE SCART_FB_SUB SC G XS7 AOR 1 GND 14 AOL 3 BLANK 16 BGND 5 BLANKGND 18 B 7 V YIN 20 GGND 9 G 11 DATA 12 R C 15 VGND 17 VOUT 19 SHIELD 21 AIR 2 AGND 4 AIL 6 SW 8 CLK 10 RGND 13 SC B SC R SC FB SC_FB SC FS SC_FS SC G SCART_RGB RV79 A...

Page 24: ...k RV31 AVLC18S02015 AV1_AUR 2 AV1_AUL 2 CVBS0 2 c VGA Signal PC VGA signal input from XS24 later enter U46 DDCSCL UART T VGA_RIN XS24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 17 16 VGA_HS VGA_GIN DDCSDA UART R VGA_VS VGA5V VGA_BIN VGA_BIN DDC_SCL R533 0R NC VGA_GIN R235 75R R218 100R RV76 AVLC18S02015 RV75 AVLC18S02015 R493 75R RV117 AVLC18S02015 R528 75R UART RX 2 UART R VGA_BIN VGA_RIN VGA_GIN VGA_RI...

Page 25: ... R316 12k RV103 ASES12U020R2 NC R336 10k RV104 ASES12U020R2 NC R361 12k C209 560p 50V R406 10k HD2_AUL HD2_AUR HD1 AV R HD1 AV L 红白 XS14 SIGNAL1 1 SIGNAL3 3 GND 2 SIGNAL4 4 GND 5 SIGNAL6 6 Audio output After audio signal was processed by the main IC outputting digital audio signal that enter I2S and TAS5707 to amplify processing finally output to Speakers or soundbars g Control Process The Power ...

Page 26: ...25V R722 22k V712 MMBT3904LT1 3 1 2 PWR ON R723 22k R724 4 7k C718 1u 25V 5VAIN 1 Power on the Panel _Backlight and Brightness are control by the main board the PIN 4 of XP2 is BL_ON OFF the high or low level control the BL_ON OFF the PIN 3 of XP2 is BL_ brightness Adjust through control the level high or low to control the BL_ brightness STB 12V_IN 2 12V_IN Inverter Connector R37 1k R143 0R NC V4...

Page 27: ...76 47R R175 47R 33V_Normal I2C SDA 4 9 11 7 I2C SCL 4 9 11 7 EEP_VCC I2C SCL I2C SDA WP_EE Address 0xA0 h The main control signal as list Control Signal net name recommend Remark PWR ON OFF Low level power on PWR ON OFF pass V4 inverse phase Standby signal Power control PWR ON High level power on ON_PBACK High level power on BL control BL ON OFF Low level power on Audio amplify mute MUTE_5707 Low ...

Page 28: ...Remote Control Remote control does not work Try new batteries Replace RC Check IR receiver Change Led IR board Change Led IR cable Replace main board Replace battery Replace remote control Replace Led IR BD Replace Led IR cable YES YES NO YES NO YES NO ...

Page 29: ...ing for Function Key Buttons does not work Check switches Check key board Check Key BD cable Change Key BD Replace main board Check solder connections and see if any switches are stuck Replace Key BD OK YES YES NO YES NO NO ...

Page 30: ...wer on Is LED light NO YES Check Power Output YES NO Check Power Cord Only one works Replace Main BD Try Power on by RC and Button Neither works Both Work Power on OK YES NO Replace Power BD YES NO RED BLUE Panel Bright NO Replace Main BD NO YES Check signal Source YES NO YES Replace Panel to contact Hisense tech support OK ...

Page 31: ...4 Troubleshooting for Audio No sound Check connecter Check speaker wire Replace main board Reconnect Replace speaker wire YES YES NO NO Check speaker set Replace speaker set YES NO OK YES NO Power Supply Board ...

Page 32: ... 5 Troubleshooting for TV VGA HDMI input No picture on the screen Check Signal Source Check connect Check cable Replace main board Make sure signal source is available Reconnect Replace cable NO YES YES NO NO ...

Page 33: ... 6 Troubleshooting for YPbPr input No picture on the screen Check Source work or not Check connect Check Wires Green Blue Red Replace main board Check Source Device Reconnect Replace wires NO YES YES NO YES NO ...

Page 34: ...3 7 Troubleshooting for Video input No picture on the screen Check Source work or not Check connect Check Cable Wires Replace main board Check Signal Source Reconnect Replace Cable Wires NO YES YES NO YES NO ...

Page 35: ... 35 6 Explode View 7 Schematic circuit diagram ...

Page 36: ......

Page 37: ...G8 078 932 ROH X0 11 Bracket 1 RSAG8 078 932 ROH X0 12 Power Switch 1 HF 606 TV P通PS8 12 D 047B ROH 13 Power Cord 1 YS 3 8E 2 ROH 13 1 STAND 1 RSAG6 121 0224 FB2 ROH X1 SKD 14 Bracket 1 RSAG8 078 946 ROH X0 1 k 1 SAG8 600 1 1 O 0 15 Bracket 1 RSAG8 600 171 ROH X0 16 Bracket 1 RSAG8 038 2486 ROH 17 Bottom Label 1 RSAG8 804 4251 ROH 18 Side Label 1 RSAG8 804 4250 ROH S th TV R B k Diff 19 Rating Lab...

Page 38: ...25 Bracket 1 RSAG8 038 2453 ROH 26 Bracket 2 RSAG8 038 2485 ROH ...

Page 39: ... view Note Next version will use 8 1 bracket RSAG8 078 2579 instead of 8 bracket RSAG8 038 2484 8 1 bracket SAG8 078 2579 uses 4 screw SJ2836 87 M4X8 to fix on the panel and 4 screw SJ2824 87 ST5X14F black to fix on the rear cover Note Next version will use 11 1 panel RSAG8 043 0122 instead of 11 stand RSAG6 121 115 11 1 panel RSAG8 043 0122 uses 3 screw SJ2823 87 ST4X16C to fix to the TV 8 1 11 1...

Page 40: ...1 Speaker 2 fix with 4 screw RSAG8 912 018 7 VIT3010 8W8Ω 01 Speaker 2 fix with 4 screw RSAG8 912 018 8 RSAG8 038 2484 bracket 1 fix to panel with 2 screw GB T818 2000 M4X6 white and 2 screw SJ2836 87 M4X6 fix to front bezel with 2 screw SJ2824 87 ST4X14F black 9 SAG8 0 4 91 C 1 9 RSAG8 074 917 Rear Cover 1 fix to front bezel with 14 screw SJ2824 87 ST4X14F black 10 RSAG6 150 685 bracket 4 fix wit...

Page 41: ...k t 1 18 RSAG8 078 937 bracket 1 19 RSAG2 908 1962 Keypad PCA 1 fix to panel with 4 screw SJ2836 87 M4X8 white fix to Rear Cover 8 1 RSAG8 078 2579 ROH bracket 1 fix to panel with 4 screw SJ2836 87 M4X8 white fix to Rear Cover with 4 screw SJ2824 87 ST5X14F black next version uses Bracket 8 1 1102433 11 1 RSAG8 043 0122 SKD ROH stand 1 fix to TV with 3 screw SJ2824 87 ST4X16C black next version us...

Page 42: ... SS 8 IN 2 GND 4 EN 7 BS 1 V44 MMBT3904LT1 V44 MMBT3904LT1 3 1 2 R448 100k R448 100k C201 100n 16V C201 100n 16V C811 100u 16V C811 100u 16V R34 1k R34 1k R32 10k NC R32 10k NC L93 BLM18PG121SN1 NC L93 BLM18PG121SN1 NC C12 100n 16V C12 100n 16V C195 1u 16V C195 1u 16V C311 100n 16V C311 100n 16V R449 4 7k R449 4 7k L7 STPB2012 121PT L7 STPB2012 121PT R447 10k R447 10k R452 4 7k R452 4 7k C78 1n 50...

Page 43: ... 100n 16V NC C957 22u 6 3V C957 22u 6 3V R40 10k R40 10k R723 22k R723 22k R771 100R R771 100R C376 22u 16V C376 22u 16V R512 100K R512 100K N55 R TSOP14N 065 640 HX MSP430F2012 N55 R TSOP14N 065 640 HX MSP430F2012 VCC 1 P1 0 TACLK ACLK AO_4 2 P1 1 TA0 A1_5 3 P1 2 TA1 A2_6 4 P1 3 ADC10CLK A3 VREF VeREF _1 5 P1 4 SMCLK A4 VREF VeREF TCK_9 6 P1 5 TA0 A5 SCLK TMS_10 7 P1 6 TA1 A6 SDO SCL TDI TCLK_8 8...

Page 44: ...10k RV76 AVLC18S02015 RV76 AVLC18S02015 R526 22k NC R526 22k NC C237 100n 25V C237 100n 25V R483 100R R483 100R R534 0R NC R534 0R NC RV117 AVLC18S02015 RV117 AVLC18S02015 RV116 AVLC18S02015 RV116 AVLC18S02015 R484 10k R484 10k XS6 XS6 R 2 SW2 4 SW1 5 L 1 GND 3 C243 560p 50V C243 560p 50V R235 75R R235 75R R487 100R R487 100R R533 0R NC R533 0R NC C239 560p 50V C239 560p 50V R527 100R R527 100R R4...

Page 45: ...4 SIGNAL6 6 SIGNAL1 1 SIGNAL3 3 R350 75R R350 75R RV103 ASES12U020R2 NC RV103 ASES12U020R2 NC V90 MMBT3904LT1 V90 MMBT3904LT1 3 1 2 R952 4 7k R952 4 7k C214 560p 50V NC C214 560p 50V NC 黄 XS17 黄 XS17 SIGNAL 1 GND 2 SIGNAL_1 3 R951 0R NC R951 0R NC C932 22u 6 3V C932 22u 6 3V R802 220R R802 220R R408 100R R408 100R R336 10k R336 10k C933 22u 6 3V C933 22u 6 3V V91 MMBT3904LT1 V91 MMBT3904LT1 3 1 2 ...

Page 46: ...891 100u 16V NC C891 100u 16V NC C888 100u 25V C888 100u 25V R736 22k NC R736 22k NC R738 0R R738 0R C707 2 2u 10V NC C707 2 2u 10V NC R741 0R R741 0R R737 22k NC R737 22k NC R742 0R R742 0R C889 220u 25V NC C889 220u 25V NC R743 0R R743 0R C890 220u 25V NC C890 220u 25V NC N44 TPA1517 N44 TPA1517 IN1 1 SGND 2 SVRR 3 OUT1 4 PGND 5 OUT2 6 VCC 7 M_SB 8 IN2 9 GND_18 10 GND_19 11 GND 12 GND_10 13 GND_...

Page 47: ...2 PADA_SOGIN1 N1 PADA_RIN1M R3 PAD_HSYNC1 W6 PAD_VSYNC1 Y6 PADA_BIN2M R1 PADA_GIN2M T2 PADA_RIN2M U2 PADA_SOGIN2 T3 PAD_HSYNC2 V4 PADA_RIN0P M3 PADA_BIN0P K3 PADA_RIN1P P2 PADA_GIN1M P3 PADA_BIN1P M1 PADA_RIN2P U3 PADA_GIN2P T1 PADA_BIN2P R2 PADA_CVBS0 AC5 PADA_CVBS4 W2 PADA_CVBS5 W3 PADA_CVBS_OUT1 V3 PADA_VCOM W1 PADA_CVBS1 W4 PADA_CVBS2 W5 PADA_CVBS_OUT2 AA4 PADA_CVBS3 AA5 RP964 22R RP964 22R R1...

Page 48: ...DC1 2V_33 H21 VDDC1 2V_34 E20 VDDC1 2V_35 F20 VDDC1 2V_36 G20 VDDC1 2V_37 G22 AVDD25_REF_38 N9 DVDD_NODIE L10 AVDD_DVI_40 F9 AVDD_DVI_41 F10 AVDD_DVI_42 G9 AVDD_DMPLL G10 AVDD3P3_ADC H9 AVDD3P3_ADC_45 H10 GND V7 GND_47 W7 GND_48 V8 GND_49 W8 GND_50 V9 GND_51 W9 GND_52 J10 GND_53 K10 GND_54 M10 GND_55 N10 GND_56 P10 GND_57 R10 GND_58 T10 GND_59 U10 GND_60 V10 GND_61 W10 GND_62 D11 GND_63 G11 GND_64...

Page 49: ...0R2 NC RV109 ASES12U020R2 NC RV39 ASES12U020R2 NC RV39 ASES12U020R2 NC RV114 ASES12U020R2 NC RV114 ASES12U020R2 NC R190 10R R190 10R R278 10R R278 10R R186 4 7k R186 4 7k R913 22k R913 22k R227 10R R227 10R RV102 ASES12U020R2 NC RV102 ASES12U020R2 NC V31 MMBT3904LT1 V31 MMBT3904LT1 3 1 2 RV106 ASES12U020R2 NC RV106 ASES12U020R2 NC R191 100R R191 100R RV101 ASES12U020R2 NC RV101 ASES12U020R2 NC V12...

Page 50: ...AVLC18S02015 RV79 AVLC18S02015 RV74 AVLC18S02015 RV74 AVLC18S02015 R504 75R R504 75R C338 100n 25V C338 100n 25V R260 150R R260 150R R421 0R R421 0R R256 47k R256 47k RV52 AVLC18S02015 RV52 AVLC18S02015 C342 2 2u 10V C342 2 2u 10V R485 75R R485 75R RV36 AVLC18S02015 RV36 AVLC18S02015 R499 1 5k R499 1 5k RV73 AVLC18S02015 RV73 AVLC18S02015 C830 330u 6V C830 330u 6V R509 75R R509 75R C336 220p 50V N...

Page 51: ...V C230 10n 50V R272 1k R272 1k C828 100u 25V C828 100u 25V L21 BLM18PG181SN1 L21 BLM18PG181SN1 C446 100n 16V C446 100n 16V R286 2 2k NC R286 2 2k NC R303 300R R303 300R H9 NC H9 NC 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 C827 100u 25V C827 100u 25V C461 20p 50V NC C461 20p 50V NC M2 MARK M2 MARK R314 6 8R 2W R314 6 8R 2W C347 100n 16V C347 100n 16V C254 100n 16V C254 100n 16V H8 NC H8 NC 1 1 2 2 3 3 4 4 5...

Page 52: ... 2 C405 10u 16V NC C405 10u 16V NC C181 100n 25V C181 100n 25V C334 220n 50V C334 220n 50V R400 0R NC R400 0R NC R180 10k NC R180 10k NC C319 10u 16V NC C319 10u 16V NC R332 10k R332 10k R148 10k NC R148 10k NC RV32 AVLC18S02015 NC RV32 AVLC18S02015 NC R133 47k NC R133 47k NC C825 100u 25V C825 100u 25V VD91 1N4148W NC VD91 1N4148W NC 1 2 L25 22 0 uH L25 22 0 uH V43 MMBT3904LT1 V43 MMBT3904LT1 3 1...

Page 53: ...A MSD309PX A Saturday November 27 2010 Power for USB USB Input Shield R61 4 7k NC R61 4 7k NC C114 1u 16V NC C114 1u 16V NC R43 5 1R R43 5 1R C115 100n 16V C115 100n 16V L888 STPB2012 121PT L888 STPB2012 121PT V25 MMBT3904LT1 NC V25 MMBT3904LT1 NC 3 1 2 SH2 SH2 1 2 3 4 C817 100u 16V C817 100u 16V L46 STPB2012 121PT L46 STPB2012 121PT R49 4 7k NC R49 4 7k NC RV8 ASES12U020R2 NC RV8 ASES12U020R2 NC ...

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