Related Manuals for JVC LT-42EM91
Summary of Contents for JVC LT-42EM91
- Page 1 SERVICE MANUAL 42" CLASS WIDE LED TV LT-42EM91 All the specifications and features are subject to change without notice. S/M CODE NO. M3CQ13AASM ORIGINAL DATE OF ISSUE 11/2010...
- Page 2 IMPORTANT SERVICE SAFETY INFORMATION Operating the receiver outside of its cabinet or with its Before returning the receiver to the user, perform the back removed involves a shock hazard. Work on following safety checks: these models should only be performed by those who 1.
- Page 3 ABOUT LEAD FREE SOLDER (PbF) Distinction of PbF PCB: PCBs (manufactured) using lead free solder will have a PbF printing on the PCB. (Please refer to figures.) Caution: • Pb free solder has a higher melting point than standard solder; Typically the melting point is 86 F~104 F(30...
- Page 4 TABLE OF CONTENTS A1-1 IMPORTANT SERVICE SAFETY INFORMATION....................... A1-2 ABOUT LEAD FREE SOLDER (PbF)........................... A2-1 TABLE OF CONTENTS..............................A3-1~A3-6 GENERAL SPECIFICATIONS............................DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF MECHANICAL PARTS AND P. C. BOARDS................ B1-1, B1-2 2. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC................B2-1, B2-2 SERVICE MODE LIST..............................
- Page 5 GENERAL SPECIFICATIONS LCD Size / Visual Size 42.02 inch / 1,067.3mmV System LCD Type Color TFT LCD Number of Pixels 1920(H) x 1080(V) Double Scan View Range Left/Right 88/88 degree Up/Down 88/88 degree < Bright Dot Zero Bright Dot Ratio Color System NTSC Speaker...
- Page 6 GENERAL SPECIFICATIONS Clock and Clock Timer Sleep Timer Max Time 120 Min On Timer Program Yes 1Program Off Timer Program Game Timer Timer Back-up (at Power Off Mode) more than Remote Unit RC-SF Control Glow in Dark Remocon Remocon Format Format Custom Code 03h ､...
- Page 7 GENERAL SPECIFICATIONS G-10 Features Auto Shut Off Auto Search Power On Memory Hotel Mode Comb Filter Game Position Auto Setup Language TV Location Signal Type Automatic Search Picture Setting(TV) Picture Preference Brightness , Contrast , Color Tint Sharpness Color Temperature Backlight Picture Setting(PC) HOR Position , VER Position...
- Page 8 GENERAL SPECIFICATIONS Digital Out Dolby Digital MPEG PC Monitor Input VGA (640x480) Yes (60,72,75Hz) VGA (720x400) Yes (70Hz) WVGA (848x480) SVGA (800x600) Yes (56,60,72,75Hz) XGA (1024x768) Yes (60,70,75Hz) WXGA (1280x768) Yes (60Hz) WXGA (1280x720) WXGA (1360x768) Yes (60Hz) SXGA (1280x1024) Yes (60Hz) WXGA+ (1440x900) Yes (60Hz)
- Page 9 GENERAL SPECIFICATIONS G-11 Accessories Owner's Manual Language English / French w/Guarantee Card Remote Control Unit Rod Antenna Poles Terminal Loop Antenna Terminal U/V Mixer DC Car Cord (Center+) Guarantee Card Warning Sheet Circuit Diagram Antenna Change Plug Service Facility List Important Safeguard Dew/AHC Caution Sheet Quick Set-up Sheet...
- Page 10 Container Stuffing (40' container) Sets/40' container w/Pallet w/Wrapping G-16 Material Cabinet Front PC+ABS 94V0 NON-HALOGEN Rear PS 94V0 NON-DECABROM Stand GLASS Jack Panel Non-Halogen Demand Eyelet Demand G-17 Environment Environmental standard requirement Green procurement of JVC Pb-free Phase3(Phase3A) Measures for Whisker A3-6...
- Page 11 DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF MECHANICAL PARTS 1-3: BACK CABI ASS'Y (Refer to Fig. 1-3) AND P.C. BOARDS 1. Remove the 18 screws (1) 2. Remove the 4 screws (2) 3. To detach the Back cabi Ass'y as below lelf side, perfrom CAUTION Be careful not to remove the LVDS cable forcibly, because these steps as arrow (A) ->...
- Page 12 DISASSEMBLY INSTRUCTIONS 1-4: MAIN PCB/FRC PCB (Refer to Fig. 1-4) 1-6: REMOCON PCB/LED PCB/OPERATION PCB (Refer to Fig. 1-6) 1. Disconnect the following connectors: (CP301, CP302, CP2808, CP2804, CP6403, CP2201 and CP7601). 1. Remove the screw (1) 2. Remove the 6 screws (1). 2.
- Page 13 DISASSEMBLY INSTRUCTIONS 2. REMOVAL AND INSTALLATION OF 3. When IC starts moving back and forth easily after FLAT PACKAGE IC desoldering completely, pickup the corner of the IC using tweezers and remove the IC by moving with the IC REMOVAL desoldering machine.
- Page 14 DISASSEMBLY INSTRUCTIONS INSTALLATION 4. When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a 1. Take care of the polarity of new IC and then install the Thintip Soldering Iron. (Refer to Fig. 2-8.) new IC fitting on the printed circuit pattern. Then solder each lead on the diagonal positions of IC temporarily.
- Page 15 SERVICE MODE LIST This unit is provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter to the SERVICE MODE function, press and hold both buttons simultaneously on the main unit and on the remote control for more than a the standard time in the appropriate condition.
- Page 16 WHEN REPLACING EEPROM (MEMORY) IC CONFIRMATION OF CHECK SUM, POWER ON TOTAL HOURS AND MICON VERSION Initial total of MEMORY IC, POWER ON total hours and MICON VERSIONcan be checked on the screen. Total hours are displayed in 16 system of notation. NOTE: If you set a factory initialization, the total hours is reset to "0".
- Page 17 ELECTRICAL ADJUSTMENTS 1. ADJUSTMENT PROCEDURE NO. FUNCTION NO. FUNCTION Read and perform these adjustments when repairing the 03 R DRIVE(N) 35 TINT circuits or replacing electrical parts or PCB assemblies. 04 R CUTOFF(N) 36 SHARP H1 MAX 05 G DRIVE(N) 37 SHARP H1 MIN CAUTION 06 G CUTOFF(N)
- Page 18 ELECTRICAL ADJUSTMENTS 2-2: BRIGHTNESS CENT 2-3: CONTRAST MAX 1. Place the set in Aging Test for more than 15 minutes. 1. Place the set in Aging Test for more than 15 minutes. 2. Receive the color bar pattern. (RF Input) 2.
- Page 19 ELECTRICAL ADJUSTMENTS 2-4: CONTRAST CENTER 2-5: CONTRAST 40 1. Place the set in Aging Test for more than 15 minutes. 1. Place the set in Aging Test for more than 15 minutes. 2. Receive the color bar pattern. (RF Input) 2.
- Page 20 ELECTRICAL ADJUSTMENTS 2-6: Confirmation of Fixed Value (Step No.) Please check if the fixed values of each of the adjustment item is set correctly referring below. (TV/AV/COMPONENT/HDMI/PC/DTV) COMPONENT HDMI DVI ---> HDMI FUNCTION CVBS 480i 480p 720p 1080i 480i 480p 720p 1080i 1080p...
- Page 21 ELECTRICAL ADJUSTMENTS 3. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) LCD PANEL POWER PCB CD2303 CD2304 CP2302 CP2301 CP2305 FRC PCB MAIN PCB CP2808 CP2804 CP302 CP301 J4302 CP4203 CP3602 J4203 TU5800 CP3603 J4205 J4207 J4201 CD6202 CD6204 CD7601 LED PCB AC IN CD6502 CP7601...
- Page 22 TROUBLESHOOTING GUIDE (LCD SECTION) POWER DOES NOT TURN ON Is F6501 broken? Change F6501. Is there voltage at Check IC6406 and peripheral pin 8 of IC6406 14V? circuit. Change POWER PCB.
- Page 23 TROUBLESHOOTING GUIDE THE PICTURE APPEARS, BUT THE AUDIO DOES NOT APPEARS. (AT RF MODE) Is SP301 WIRE Connect SP301 WIRE CONNECTOR CONNECTOR. connected? Is there signal at pins Change SP301 and SP302. 1 and 4 of CD301? Is there signal at pins 2 Check IC301 and peripheral and 4 of IC301? circuit.
- Page 24 TROUBLESHOOTING GUIDE THE PICTURE DOES NOT APPEAR Is there voltage at pin Check pin13 and Change V2801(PANEL). Does backlight shine? 1 of CP6401 24V? pin14 of CP6401. Change MAIN PCB Connected CD6401 Is CD6401 connected? Check Q3002 and peripheral Is there voltage at pins Vcc of CP2808 12V? circuit.
- Page 25 IC DESCRIPTION R8J66977BG(IC2801) Ball NO. PIN NAME DESCRIPTION RESET_N Reset in XIN25 25MHz XIN XOUT25 O 25MHz XOUT USB_P --- USB P USB-N --- USB N GPANAIO --- Open (Do not connect any signal). RREFEXT --- External resistor BCKO D IIS out LRCKO D IIS out ADATAO0...
- Page 26 Ball NO. PIN NAME DESCRIPTION O JTAG Interface GPIO0 D GPIO GPIO1 D GPIO GPIO2 D GPIO GPIO3 D GPIO GPIO4 D VBUS control GPIO5 D VBUS status input GPIO6 D GPIO GPY05 D INT GPY06 D INT GPY07 D INT GPY08 D INT GPY09...
- Page 27 Ball NO. PIN NAME DESCRIPTION SDDQ9 I/O DDR2 Interface SDDQ8 I/O DDR2 Interface SDDM0 I/O DDR2 Interface SDDQS1 I/O DDR2 Interface SDDQS1_N I/O DDR2 Interface SDDQ7 I/O DDR2 Interface SDDQ6 I/O DDR2 Interface SDDQ5 I/O DDR2 Interface SDDQ4 I/O DDR2 Interface SDDQ3 I/O DDR2 Interface SDDQ2...
- Page 28 Ball NO. PIN NAME DESCRIPTION VIN2A Video input VIN3A Video input VIN4A Video input VIN5A Video input VIN6A Video input VIN7A Video input VIN8A Video input Video input YOUT Connect to YIN and SSIN3 through capacitor. VREFA P Video input REXT P External capacitor VIN1B...
- Page 29 Ball NO. PIN NAME DESCRIPTION PWR1 HDMI PWR in ch#1 PWR2 HDMI PWR in ch#2 DDC0_SCL HDMI DDC SCL ch#0 DDC0_SDA I/O HDMI DDC SDA ch#0 DDC1_SCL HDMI DDC SCL ch#1 DDC1_SDA I/O HDMI DDC SDA ch#1 DDC2_SCL HDMI DDC SCL ch#2 DDC2_SDA I/O HDMI DDC SDA ch#2 PLL_XFC_A...
- Page 30 Ball NO. PIN NAME DESCRIPTION VDD12 P Core 1.26V power1 VDD12 P Core 1.26V power1 VDD12 P Core 1.26V power1 VDD12 P Core 1.26V power1 VDD12 P Core 1.26V power1 VDD12 P Core 1.26V power1 VDD12 P Core 1.26V power1 VDD12 P Core 1.26V power1 VDD12...
- Page 31 Ball NO. PIN NAME DESCRIPTION MIXVDD33 P Demodulator 3.3V analog power MIXVDD33 P Demodulator 3.3V analog power MIXVDD33 P Demodulator 3.3V analog power MIXVDD33 P Demodulator 3.3V analog power MIXVDD33 G Demodulator 3.3V analog power MIXVDD33 G Demodulator 3.3V analog power MIXVDD33 G Demodulator 3.3V analog power RESERVED...
- Page 32 SEMICONDUCTOR BASE CONNECTIONS DIODE 1H6-A2 10ERB60-TA1B2 FCQS10A065 SF10K60M EC31QS06-TE12L 1SS133T-77 1N4006-EIC RF071M2STR MTZJ30B T-77 FCHS10A08 RSX301LA-30TR MTZJ33B T-77 SMAB34 SARS01-V1 TDZTR15 TDZTR27 TDZTR30 ANODE CATHODE ANODE S14K385E2S5M4 BA36-PUR1DCB549T1/470 UDZSNP6.8B TE-17 D5SB80-7009F31 MA111-(TX) EZJZ0V80010 EZJZ0V80010 ATTINY48-MU ATTINY48-MU MCZ5203NA-7101 MCZ5203NA-7101 STR-A6059H STR-A6059H LV5747NTTL LV5747NTTL YDA156-VZE2...