Related Manuals for SITRONICS LCD1701EU
Summary of Contents for SITRONICS LCD1701EU
- Page 1 LCD1701EU/LCD2001EU LCD1702EU/LCD2002EU SERVICE MANUAL (V1.1) DECEMBER 28, 2004 第 1 页 共 12 页...
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Page 2: Table Of Contents
CONTENTS 1. SAFETY PRECAUTION……………………………………………………….………3 2. PRODUCT SAFETY NOTICE…………………………………………………………3 3. BLOCK DIAGRAM…………………………………..………………………………..4 4. FACTORY MODE ADJUSTMENT…………………………………………………. .6 5. TROUBLESHOOTING………………………………………………………………..8 6. HOW TO UPDATE THE SOFTWARE ……………………………………………...10 7. MAIN PATRS LIST ..…………………………………. ……...…….….……………10 第 2 页 共 12 页... -
Page 3: Safety Precaution
CAUTION: BEFORE SERVICING THE CHASSIS, READ THE “SAFETY PRECAUTION” “PRODUCT SAFETY NOTICE”ON PAGE 1 OF THIS MANUAL. SAFETY PRECAUTION WARNING: Service should not be attempted by anyone unfamiliar with the necessary precaution on thisreceiver. The following are the necessary precautions to be observed before servicing this chassis. 1. -
Page 4: Block Diagram
BLOCK DIAGRAM TUNER BOARD Pb/Cb PI5V330 Pr/Cr MAIN BOARD SAA5264 N304 NB01 STV2248 TUNER XP311 74HC123 N302 N201 A201 74HC123 N301 VIDEO 2ndSIF & mono signal S-VIDEO TDA9181 TDA1517 N303 N203 CVBS/YC/RGB SCART MSP3410G AUDIO OUT LM358 N202 AUDIO IN N204 LM317 N501... - Page 5 MAIN BOARD 74LV541 KEYPAD 74HC4053 N109 N102 74LV273 N113 74LVC32 XP102 N103 INVERTER XP110 PI5V3 PW1306 DS90C383 PANEL N107 N118 17’’ N104 PANEL 20’’ AM29LV800 N105 INVERTER LM358 AC ADAPTER INVERTER N119 LM2576 +12V N108 +1.8V (N107) LM1117 N114 LM1117 N116 +3.3V (N107) IRF7314...
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Page 6: Factory Mode Adjustment
Page 1：display the different characteristic parameter according to signal source and TV set model item name default value Note Panel only for LCD2001EU/2002EU 640×480 only for LCD1701EU/1702EU 1280×768 Mode table According to picture format Power on time Backlight on time Version number Set color system Auto, pal, secam... - Page 7 Middle value of volume 0~127 Channel set Used for test in factory Pump current Used for test in factory Set the default value of picture mode item as following table: (For LCD1701EU/LCD1702EU) Signale source pct mode status brightness contrast NOTE dynamic VIDEO standard...
- Page 8 dynamic standard soft PAGE 4：Set the default value of volume and white balance adjustment as following table: name description default value note Normal 、 Soft 、 sharpness Sharpness of TV & video picture sofetest sharp 、 sharpest 、 softest pw brt max video IC PW1306 max bright for video 0~127 pw cnt max video...
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Page 9: Troubleshooting
TROUBLESHOOTING No picture Can see Set “black screen” PRESET picture? in OPTION1 to menu? “off” Check the cables from XP312 Change the teletext board to XP110 、XP311 to XP102 (E/RSAG7.820.234A) picture? IC N301 Pin3， IC YES, no problem Replace N304 N302 Pin5 (H&V SYNC output)? IC N301 Pin10, IC... - Page 10 Check N201 、 5V YES, no problem Check IC N201 Pin 45 (8V) supplier、SAW、33V supplier、TUNER Check L205、N501 sound, picture ok CHECK INPUT IC N202 IC N202 PERIPHERY PIN47 PIN24、25 CIRCUIT REPLACE N202 IC N202 REPLACE PIN4、6 N202 Check speakers and the connector from XP203 to speakers 第...
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Page 11: How To Update The Software
HOW TO UPDATE THE SOFTWARE The software of LCDTV stored in a 8M bit FLASH memory IC，so it can be updated when needed。Sometimes we have to update the software of LCDTV to solve some problems and only the authorized people can do the updating job。 When updating the software, we need following instruments，... - Page 12 “6” “6” “0” “7” “1” can enter the factory mode ), choosing “STV2248” then “2248 adjust”. (c) Choose “2248 vcofine”, set the value to 60; choose “2248 vcocoa”, set the value to 11, press “MENU” button on the remote control to exit the factory menu. (d) Do the normal automatic searching, if can not store any channel, please jump back to step.b, and set the “2248 vcofine”...
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