Q SERVICE MANUAL MODEL LD-26SH1U
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q SERVICE MANUAL CODE : 00ZLD26SH1U/E LCD COLOR TV MODEL LD-26SH1U CONTENTS CHAPTER 1. OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION . .1 - 1 CHAPTER 2. CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS . .2 - 1 CHAPTER 3. DISASSEMBLY AND ASSEMBLY. .3 - 1 CHAPTER 4. TROUBLE SHOOTING . .4 - 1 CHAPTER 5. BLOCK DIAGRAM . .5 - 1 CHAPTER 6. HARDWARE DESCRIPTION. .6 - 1 CHAPTER 7. CIRCUIT DIAGRAM & PWB LAYOUT. .7 - 1 Parts marked with "!" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set. This document has been published to be used for after sales service only. SHARP CORPORATION The contents are subject to change without notice. CHAPTER 1. OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION 1. SPECIFICATIONS Product specifications Temperature of operat- 5°C - 35°C (41°F - 95°F) ing environment Model name LD-26SH1U Power consumption 123 W*; 2.5 W in standby; 2.5 W in power- LCD display 26" Advanced Super-V and Anti-Glare saving mode Low-Reflection TFT LCD module * When "BRIGHT MODE" is set to "BRIGHT". Actual display size 25.5" (64.8 cm) measured diagonally 80 W in "DARK1" and 67 W in "DARK2". Resolution (max.) 1366 x 768 Dimensions (W x D x H) Approx. 658 mm x 256 mm x 534 mm (Approx. 25.9" x 10.1" x 21.0") Displayable colors Approx. 16.77 million colors (8 bit) (max.) Weight Approx. 20.5 kg; 45.2 lb. (excluding signal cable) Dot pitch (H x V) 0.4135 mm x 0.4135 mm Approx. 16.5 kg; 36.4 lb. (excluding stand) Brightness (max.) 500 cd/m 2 (The screen brightness deteriorates over Dimensions (Units: mm) time.Constant brightness cannot be main- tained.) Contrast ratio 800:1 658 110 Angle of visibility Left-right 170°; up-down 170° (contrast ratio s10) Screen display size (H x V) 564.8 mm x 317.6 mm (22.24" x 12.50") Video signal Analog: Analog RGB (0.7 Vp-p) [75 Ω] 534 Digital : DVI standard based on 1.0 487 Sync signal Separate Sync (TTL level: +/-), Sync on Green, Composite Sync (TTL level: +/-) Video signal format NTSC Expansion compensa- Digital scaling (Enlarges VGA/SVGA/XGA 324 256 tion etc. to full screen size.) [Enlarged display (full screen, fixed aspect ratio)] • Power cord: approx. 1.8m (5.9ft.) - 1:1 display is not possible. • PC analog signal cable: approx. 1.8m (5.9ft.) Plug & Play VESA DDC2B compatible • PC audio cable: approx. 1.8m (5.9ft.) Power management VESA: based on DPMS DVI : based on DMPM • Digital signal cable, NL-C04J (purchased separately): approx. 2.0 m (6.6 ft.) Speaker output 14 W in total Note: As a part of our policy of continuous improvement, SHARP reserves the right to make design and specification changes for Input terminals Computer signal: Analog: mini D-sub 15 pin (3 rows) x 1 product improvement without prior notice. The performance Digital: DVI-D 24 pin x 1 specification figures indicated are nominal values of production (Also used for DVI image input terminal) units. There may be some deviations from these values in indi- vidual units. Computer audio: mini stereo jack (3.5mm) x 1 Video image: RCA pin x 3 Component image: x 1 S-video image: x 2 HDMI: x1 DVI-D 24 pin x 1 (Also used for computer digital signal input terminal) Audio: RCA pin (L/R x 3) Antenna: F-type Output terminals Video image : RCA pin x 1 S-video image: x 1 Audio : RCA pin (L/R x 1) (Available as an audio input terminal for DVI mode) Headphone : mini stereo jack (φ3.5 mm) x 1 Receivable TV channels VHF : 2 through 13; UHF: 14 through 69; Cable: 1 through 125 Screen tilt Upward approx. 0° - 15°; downward approx. 0° - 5° Screen swivel Approx. 90° from left through right Power supply 100 VAC - 240 VAC, 50/60 Hz LD-26SH1U OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION 1 – 1 Relevant signal timings (PC mode) The analog RGB input connector pin Dot Ana- Digi- (DVI-D connector with 24 pins) Screen resolution Hsync Vsyn frequency log tal VESA 640X480 31.5kHz 60Hz 25.175MHz oo 37.9kHz 72Hz 31.5MHz oo 37.5kHz 75Hz 31.5MHz oo 800X600 35.1kHz 56Hz 36.0MHz o - 37.9kHz 60Hz 40.0MHz oo No. Function No. Function oo 48.1kHz 72Hz 50.0MHz 1 TMDS data 2- 13 N.C. 46.9kHz 75Hz 49.5MHz oo 2 TMDS data 2+ 14 +5V 1024X768 48.4kHz 60Hz 65.0MHz oo 3 TMDS data 2/4 shield 15 GND 56.5kHz 70Hz 75.0MHz oo 60.0kHz 75Hz 78.75MHz oo 4 N.C. 16 Hot plug detection Wide 848X480 31.1kHz 60Hz 33.3MHz o - 5 N.C. 17 TMDS data 0- 1280X720 44.7kHz 60Hz 74.4MHz o - 6 DDC clock 18 TMDS data 0+ oo 1280X768 47.986kHz 60Hz 81.0MHz 7 DDC data 19 TMDS data 0/5 shield 60.15kHz 75Hz 102.977MHz o - 8 N.C. 20 N.C. 1360X768 47.7kHz 60Hz 84.7MHz o - 9 TMDS data 1- 21 N.C. US text 720X400 31.5kHz 70Hz 28.3MHz oo Power 640X480 35.0kHz 66.7Hz 30.2MHz o - 10 TMDS data 1+ 22 TMDS clock shield Macintosh 832X624 49.7kHz 74.6Hz 57.3MHz o - 11 TMDS data 1/3 shield 23 TMDS clock + series 1024X768 60.2kHz 75Hz 80.0MHz o - 12 N.C. 24 TMDS clock - • Recommended resolution is 1360 x 768, 1280 x 768, or 1024 x 768. Power management • All are compliant only with non-interlaced. The monitor is based on the VESA DPMS and the DVI DMPM stan- • Depending on the type of computer to be connected, the display may dards. To activate the power management function, the video card and not work correctly even when the above relevant signals are input. the computer used with it must also conform to these standard. • Frequencies for Power Macintosh are reference values. To connect, DPMS: Display Power Management Signaling another adapter (commercially available) may be required. Power DPMS mode Screen H-sync V-sync • For digital connection, the TV can be connected to a computer with a consumption DVI-compatible output terminal (DVI-D 24 pin or DVI-I 29 pin). ON Display on 123 W Yes Yes (Depending on the type of computer to be connected, the display may STANDBY No Yes not work correctly.) SUSPENDDisplay off 2.5 W Yes No • If the TV is receiving timing signals that are not compatible, "OUT OF OFF No No TIMING" will appear. Follow your computer's operation manual to set the timing so that it is compatible with the TV. DMPM: Digital Monitor Power Management • If the TV is not receiving any signal (sync signal), "NO SIGNAL" will Power DPMS mode Screen appear. will appear. consumption ON Display on 123 W The analog RGB input connector pin OFF Display off 2.5 W (Mini D-sub connector with 15 pins) DDC (Plug & Play) This monitor supports the VESA DDC (Display Data Channel) standard. DDC is a signal standard for carrying out Plug & Play functions on the monitor or computer. It transfers information such as degree of resolu- tion between the monitor and computer. You can use this function if your computer is DDC compliant and if it is set so that it can detect the No. Function No. Function Plug & Play monitor. 1 Red video signal input 9 +5V There are many varieties of DDC due to the differences between sys- 2 Green video signal input 10 GND tems. This monitor works with DDC2B. 3 Blue video signal input 11 N.C. 4 N.C. 12 DDC data 5 GND 13 For Hsync signal input 6 For red video signal GND 14 For Vsync signal input 7 For green video signal GND 15 DDC clock 8 For blue video signal GND LD-26SH1U OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION 1 – 2 2. PRODUCT DESCRIPTION Main unit Removing the cover Replacing the cover B A 11 12 13 B 14 29 2 15 1 2 3 C 4 16 1 1 5 17 18 Opening/closing the front cover To open the cover, press . 19 2 To close the cover, press until it clicks. BRIGHT VO L/ INPUT MENU ENTER/ MODE CH BRIGHT 20 21 22 23 24 25 26 27 28 6 7 89 10 1 Speakers Be careful not to pinch the cables. 2 Headphone terminal 3 Remote sensor window Remote control 4 POWERbutton 5 Power LED Green : in use POWER Vir t ual Red : in standby mode 1 9 PC TV AV HDMI/ DVI Orange : in power-saving mode (only for PC mode) 10 FREEZE MULTI VIEW MOD E 11 Off : power off 2 12 6 S-video input terminal SLEEP MENU 3 13 7 Video input terminal ENTER AV-IN3 4 BRIGH T 8 Audio input terminal - Left MOD E BRIGHT 14 9 Audio input terminal - Right 5 F Control buttons 6 15 G Antenna input terminal DISPLA Y CC MT S M UTE 7 16 H Video input terminal I Audio input terminal - Left VO L 17 AV-IN1 J Audio input terminal - Right 8 K S-video input terminal CH 18 L Video input terminal FLASHBA CK 19 M Audio input terminal - Left AV-IN2 N Audio input terminal - Right O Component input terminals P S-video output terminal Q Video output terminal R Audio output terminal - Left (Available as an audio input 1 POWER button terminal for DVI mode) AV-OUT 2 FREEZE button S Audio output terminal - Right 3 (Available as an audio input SLEEP button terminal for DVI mode) 4 bc e d buttons and ENTER button T HDMI input terminal 5 BRIGHT MODE button U DVI input terminal 6 DISPLAY button (DVI-D 24 pin) 7 CC (Closed Caption) button (Available as a digital RGB input terminal for PC mode) V PC analog RGB input terminal (Mini D-sub 15 pin) 8 Channel buttons W PC audio input terminal 9 Dolby Virtual button X Power input terminal F Input buttons (PC, TV, AV, and HDMI/DVI) Y Lug-hole for cable clamp G VIEW MODE button A Ventilation openings H MULTI button B Exhaust openings Never block these openings as this may lead I MENU button to overheating inside the TV and result in malfunction.