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LL-T17A4-H/B

TROUBLE SHOOTING

5 – 3

5. Function key can not work

YES

NO

IC301 failure

YES

NO

KeyBoard failure

Check wire harness
is connected form I/F
board to Key

Check voltage of IC301
pin38, 39, 40, 41, 42, 43 while key is
pressing
INPUT
MENU
MODE/DOWN
LEFT
RIGHT
Power-ON/OFF

The key cable is disconnected

6. No Sound

Check IC801 Pin15, 16 is approximately 12V

Check IC801 Pin 12 is Low voltage

YES

YES

NO

NO

YES

NO

NO

YES

NO

Earphone output normal

The speakers are failure

CN805 is failure

The cable is deiconnected

Check wire harness is connected
from CN804, CN802 to earphone board

IC801failure

D807 failure

IC301failure

(Test signal: Vrms sine waveform)

Adjust VOLUME to max and check
IC801 pin 14, 17

«
...
12
13
14
15
16
...
»

Содержание LL-T17A4-B

Страница 1: ...ly The contents are subject to change without notice LLT17A4SME LCD MONITOR LL T17A4 H MODEL LL T17A4 B 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 BLOCK DIAGRAM 4 1 CHAPTER 5 TROUBLE SHOOTING 5 1 CHAPTER 6 CIRCUIT DIAGRAM 6 1 CHAPTER 7 PWB LAYOUT 7 1 Model Name Product N...

Страница 2: ...cluding stand Excluding signal cable Dimensions Units mm Analog signal cable approx 1 8 m Audio cable approx 1 8 m Relevant signal timings Recommended resolution is 1280 x 1024 All are compliant only with non interlaced Frequencies for Power Macintosh and Sun Ultra series are reference values To connect another adapter commercially available may be required If the monitor is receiving timing signa...

Страница 3: ...button is used to pop up select and close the OSD On Screen Display Menu 2 c MODE button When the OSD Menu is displayed This button is used to select menu options When the OSD Menu is not displayed This button is used to set DISPLAY MODE 3 e d buttons When the OSD Menu is displayed These buttons are used to select an option or adjust the value of the selected option When the OSD Menu is not displa...

Страница 4: ...itor beyond its movement range Applying excessive force to move the monitor may damage the product Be careful not to allow your fingers to be pinched Height adjustment When positioning the display higher hold the stand tight so that it does not move together with the display Angle adjustment Lowest position Highest position approx 47mm approx 20 approx 60 approx 45 approx 20 approx 45 approx 5 ...

Страница 5: ...the analog signal cable Note If connecting to the Sun Ultra series a conversion adapter com mercially available may be required Connect the accessory audio cable When the accessory audio cable is connected to the audio output termi nal of the computer the sound of the connected computer is output from the monitor speakers You can also use the headphone jack of the display 1 2 Connection of headpho...

Страница 6: ...or after having changed the system settings during use perform an automatic screen adjust ment Depending on the type of computer or OS you may need to install the monitor set up information on your system When connecting to a notebook if the notebook computer s screen is set to display at the same time the MS DOS screen may not be able to display properly In this case change the set tings so that ...

Страница 7: ...d between the display and stand nor to let the stand drop These could lead to injury 1 Remove the cables 2 Spread out a soft cloth on a suitable horizontal surface 3 Being careful not to damage the monitor gently lay the monitor on it display side down 4 Remove the cover While pressing the A areas on the sides push it up 5 Remove the six screws and then remove the stand from the moni tor Note The ...

Страница 8: ...values Power ON Power ON Press the above two buttons at same time and while turn the power on 2 ADJUSTMENT menu reset Press the two buttons at same time 3 Adjustment lock function While pressing the MENU button turn the power on 6 Screen adjustment MENU ADJUSTMENT AUTO CLOCK PHASE H POS V POS AUTO MENU GAIN CONTROL BLACK LEVEL CONTRAST MENU COOL STD WHITE BALANCE WARM USER R CONTRAST CONTRAST R G ...

Страница 9: ... green d button for red G CONTRAST e button for purple d button for green B CONTRAST e button for yellow d button for blue MENU 4 MODE SELECT OSD H POSITION OSD horizontal position The position of the OSD display can be moved to the left and right e d buttons OSD V POSITION OSD vertical position The position of the OSD display can be moved up and down e d buttons SCALING Level of scaling 0 2 SCALI...

Страница 10: ...s and remove the shield by sliding it upward 3 Remove all the connectors and flat cables on the PWB 4 Remove the hex screws washer and screws and remove the I F PWB by sliding it upward 3 P I PWB REMOVAL 1 Remove the connector covers A and remove all the connectors on the PWB 2 Remove the screws and remove the P I PWB B 4 LCD UNIT REMOVAL 1 Remove the screws and remove the front cabinet A 2 Remove...

Страница 11: ...LL T17A4 H B BLOCK DIAGRAM 4 1 CHAPTER 4 BLOCK DIAGRAM LCD MONITOR ...

Страница 12: ...13 positeve terminal Is there any voltage waveform on IC201 PIn2 1 IC400 Pin126 127H V sync 2 IC400 Pin122 The s ignal cable is disconnected YES NO NO YES YES NO 400 failure YES NO Q203 failure YES NO YES NO IC301 Q306 failure NO IC02 IC03 IC04 IC05 T01 T02 failure IC01 failure Is the backlight lighted Check signal cable is fully connected to CN400 Check wire harness is fully connected between the...

Страница 13: ... IC400 Pin127 same as V sync of input Check IC400 Pin126 same as H sync of input D618 failure D619 failure Test patern 32 Gray 1280 x 1024 60Hz YES NO The Signal cable not fully connected IC400 failure NO Check signal cable fully connected between signal source and Interface Board Check CN602 Pin1 2 3 RIN GIN BIN D614 D615 D616 failure 4 color interference ...

Страница 14: ...N LEFT RIGHT Power ON OFF The key cable is disconnected 6 No Sound Check IC801 Pin15 16 is approximately 12V Check IC801 Pin 12 is Low voltage YES YES NO NO YES NO NO YES NO Earphone output normal The speakers are failure CN805 is failure The cable is deiconnected Check wire harness is connected from CN804 CN802 to earphone board IC801failure D807 failure IC301failure Test signal Vrms sine wavefor...

Страница 15: ...01 C103 C104 DC OUTPUT R120 R122 R124 R125 C110 IC102 IC103 IC101 SG6841 PWM CONTROLLER 13V 13V F01 Q01 R03 D01 Q02 D11 R44 R31 R04 R19 REGULATOR BROWN OUT CIRCUIT Q03 Q04 Q05 Q06 R24 D07 D08 LAMP OUTPUT SENSOR IC01 OZ960G BURST MODE IC OVP SENSOR 13V 5V IC02 IC03 T01 DRIVER IC04 IC05 T02 DRIVER CN02 OUT PUT CONNECTOR CN03 OUT PUT CONNECTOR CN04 OUT PUT CONNECTOR CN05 OUT PUT CONNECTOR LAMP LAMP L...

Страница 16: ...AM 6 1 A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A 1 7 CHAPTER 6 CIRCUIT DIAGRAM ...

Страница 17: ...CIRCUIT DIAGRAM 6 2 A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A 2 7 ...

Страница 18: ...CIRCUIT DIAGRAM 6 3 A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A 3 7 ...

Страница 19: ...CIRCUIT DIAGRAM 6 4 A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A 4 7 ...

Страница 20: ...CIRCUIT DIAGRAM 6 5 A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A 5 7 ...

Страница 21: ...CIRCUIT DIAGRAM 6 6 A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A 6 7 ...

Страница 22: ...CIRCUIT DIAGRAM 6 7 A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A A B C D 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 D C B A 7 7 ...

Страница 23: ...LL T17A4 H B PWB LAYOUT 7 1 CHAPTER 7 PWB LAYOUT 1 MAIN PWB A side B side ...

Страница 24: ...LL T17A4 H B PWB LAYOUT 7 2 2 POWER SUPPLY PWB A side B side ...

Страница 25: ...003 July Printed in Japan t COPYRIGHT 2003 BY SHARP CORPORATION All rights reserved Printed in Japan No part of this publication may be reproduced stored in a retrieval system or transmitted In any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher ...

Страница 26: ... set SHARP CORPORATION This document has been published to be used for after sales service only The contents are subject to change without notice CODE 00ZLLT17A4EPE LCD MONITOR LL T17A4B MODEL LL T17A4H Model Name Product Name Color For North America For Other LL T17A4H LL T17A4U LL T17A4E Gray LL T17A4B LL T17A4Y LL T17A4P Black 1 Exteriors 2 Packing material Accessories 3 Service tool index ...

Страница 27: ... 0 N K 3 3 6 1 0 8 0 0 0 0 BA D Front Bezel LL T17A4 E U 0 N K 3 3 6 1 0 8 0 4 0 0 BA D Front Bezel LL T17A4 P Y 102 0 N K 3 3 6 0 7 2 9 7 0 0 AS C Function Key LL T17A4 E U 0 N K 3 3 6 0 7 3 0 0 0 0 AS C Function Key LL T17A4 P Y 103 0 N K 5 6 0 0 1 1 0 0 8 9 AY C Key Board Assy LL T17A4 P Y 0 N K 5 6 0 0 1 1 0 0 8 9 AY C Key Board Assy LL T17A4 E U 104 0 N K 3 7 9 0 1 8 2 5 0 0 AY B Speaker 201 ...

Страница 28: ... 2 1 Exteriors TP000292 204 205 5 7 101 102 103 302 301 303 03 6 201 4 202 2 1 104 104 ...

Страница 29: ...0 9 1 0 0 0 AX N D UsersManual 10 0 N K 3 0 8 0 4 2 0 4 0 0 AX C RGB cable Gray LL T17A4 E U 0 N K 3 0 8 0 4 2 1 6 0 0 AX C RGB cable Black LL T17A4 P Y 11 0 N K 3 0 9 0 1 3 4 8 0 0 BC N B Power cord only JP model Buy from Japan LL T17A4 U 0 N K 3 0 7 2 0 0 0 3 0 0 BC N B Power cord only JP model Buy from Japan LL T17A4 Y 12 0 N K 3 0 8 0 3 2 4 7 0 1 AY C Audio cable Gray LL T17A4 E U 0 N K 3 0 8 ...

Страница 30: ...6900 1 301 AU C 0NK3360917000 1 302 AU C 0NK3360917100 1 301 AU C 0NK3360917200 1 302 AU C 0NK3361080000 1 101 BA D 0NK3361080400 1 101 BA D 0NK3368048200 1 3 BN E 0NK3368048300 1 3 BN E 0NK3368197500 1 1 BF N E 0NK3368197600 1 1 BF N E 0NK3368206600 1 2 BL E 0NK3368215500 1 2 BL E 0NK3460153800 1 202 BA C 0NK3461020201 1 203 AS C 0NK3500937400 2 13 AS D 0NK3500938300 2 5 AU D 0NK3511380800 2 3 AU...

Страница 31: ... 5 MEMO ...

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