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Samsung GH17LS User's Manual

1. GREENIP 7 ped GREENIN GREENIN t z 4 biso BLUEIP 77 LVDS3 3V i 8 LUE1N BLUEIN DARED 0 7 DOGANE 25VJA1 m SELFRAST_D_SUB LVDS3 3V wx SE ux iu T Em 7 jp 2 5VJA1 wen CPU 5V es DE nd m REDIN CPU 5V DCLK GREENIN p cne ons mn BLUEIN 1001F 100nF 1000F Der CPU 5V 5 0109 rm ur T DEN DVS 05 gt DHS LVDS3 3V T
2. NY DAGANG Wi DAGRNG DAGRN DABLU 0 7 07 _DBREDIO DBRED 0 7 DBRED I ja DEREDE EI DBRED S MW M DEREDIA NW DBREDIS a AM cn gt DBGRN 0 7 PCVREF_GPIO2 PCFIELD GPlOS aj A53 gt DBBLU 0 7 1 100 3 3 8 7 3033 56 gt gt Ray MCA 8 15 RAUS MCA 8 R231 MCALE MCRD MCWR 100 MENU gt BLONT NS our 7 Jun 01 HARDCOPY 7 Jun O1 HARDCOPY HARDCOPY pe output to output to E output to 20 ns Int Printerk 5 ms Int Printerk 5 ps Int Printerk 1 00 V Card 1 00 v Card 1 00 V Card HOD HOD HOD GPIB r GPIB r
3. NNN PRO BO RO PRO B2 BO B2 YH YW gt TO 0 O0 gt 70 gt gt gt gt 2222222222222 Porn CO 0 D DIODE ZENE BZX84C5V1 5 1V 5 200mW SOT 23 DIODE ZENE BZX84C5V1 5 1V 5 200mW SOT 23 DIODE ZENE BZX84C5V1 5 1V 5 200mW S0T 23 DIODE ZENE BZX84C5V1 5 1V 5 200mW S0T 23 DIODE ZENE BZX84C5V1 5 1V 5 200mW S0T 23 7 8 GH17LS GH17ES 7 2 Others Code No CIS BN39 00114A CIS BN44 00029A CIS BN41 00045A CN301 PAN BN39 00102A CN302 INV BN39 00002A GH17LS GH17ES Description CBF SIGNAL INVERTER PCB MAIN CBF HARNESS CBF HARNESS 7 Electrical Parts List Specification NL150M0 15P 15P 2990 1830MM UL2990 IVORY D SUB SIC1801 4LAMP SIC1801 18 1 14V DC 160x45x17 CEZANNE II FR 4 4 1 67 117 0 172 4 1 6 CN CN17MS 1 6 229x118 9 CN17MSS UL1571 UL CSA 30P 90MM BLU WHT AWG30 DF14 308 1 25C FI X30H 60 BLU WHT 26 Remarks 7 9 7 Electrical Parts List Memo 7 10 GH17LS GH17ES 8 Block Diagram 03002 1 6 eueq 991 4 1 1951
4. CA m QU Bs 2 5VJA1 i Eu 19 195 2 e AW zs En 300nF 2 5VJA2 iat ag 83VJF CREF T ee Paar C272 2 5VJA1 77 a et COME 0285 GH17LS GH17ES IC202 JAGASM 3 3V T Gana 1 100nF 100nF tour reram 2 5V 3 3VJS T C222 0224 1200 cate 2 5VJA2 ce 22 VW TOF Toone 3 3VJP T 100 10uF 100E BR C210 C209 100nF t00nF T 3 3 a T 2 5V ur uit Lig n 135 Lio 2 mia Mia Mi NIS Nis NIS Nie pn PIZ PIE PIA PIO an Riz Ris Li Ris Rie 8 83 cam cote C21 100F 100nF 1000F 77 1 er 2 5VJS T BEEN 1000F 100nF a 100nF T 2 5VJP 242 000 Cox 0237 C220 C219 100nF 100nF Toup 109nF 2 5VJF T DARED 0 7 14201 DAREDIO NM DARED 1 panene DARED S FADS DARED 4 DAREDIE 4 Mr DARED DAGRN 0 7 203 DAGRN 0 WM M DAGRNGI
5. NOW Sv dav 19125 Od GH17LS GH17ES 8 Block Diagrams Memo 8 2 GH17LS GH17ES 9 Wiring Diagram CN102 99 wow 0 ow 92 08 zou vl ow 204 wasy 195 z 00 mfes cow ory _ 09a si ano 5 Ow Pos mafe vivoooglei au 1 73X4 TZ IPY 5254 6 8 L mn 9 oN 5 oN fy oN 218 las en ms s mer us t E E e MAIN CN104 CN103 4 5 GND BL_ON 12V_BL 12V_BL 12V_BL 9 GND 10 i 12 MENU KEY 2 BL_CNT 8 GND EXIT KEY 6 GND 3 GND GND 1 GND 3 6 GND 8 GND 9 12 BL CNT BL O FUNCTION PCB RIGHT KEY MENU KEY GH17LS GH17ES 9 Wiring Diagram Memo 9 2 GH17LS GH17ES 10 Schematic Diagrams 10 1 Main Part Schematic Diagram 5V OR DBRED 0 7 AVS DABLU 0 7 ZALCZIATISN SE 3 E LYBSSSY AT 77 REDIP Rios R108 100 100 x Fr 0102 6106 SGM32FIE1042A 1000F_100nF__100nF_100nF_100nF__ RED1N REDIN
6. No There R G B input are at R103 R107 and R108 Check input part Yes There sync and data output are No R260 R261 R211 R213 and RA201 RA212 H Please check the power related IC202 and output part Yes There proper signal input are No Pin 66 65 64 and 11 of 10102 Check IC102 and related circuit Yes Does the output signal appear at R121 R130 R132 R135 R136 and R138 R144 No Check the LVDS_EN at R118 is high or not Normal state is high Yes No There are DC 5V at Pin 1 2 and 3 of CN102 Check the Power and related circuit There are DC 12V DC5V and DC 3 3V at Pin 10 11 12 Pin 7 and Pin 4 of CN104 Please check the Inverter and related circuit GH17LS GH17ES 5 Troubleshooting WAVEFORMS 7 Jun 01 HARDCOPY T Jun 81 HAR
7. Feed Feed Feed EN On b On On 4 protocol protocol protocol HP 7470 HP 7470 J 7558 HP 7558 7550 Mes 3 TIFF color TIFF color TIFF color T BMP colon F T BMP colon F BMP color rms 1 2 335 V rms 1 3 323 V rms 1 3 272 V 20 ns 5 ms 5 ps do 02 do 02 2 trig only 8 GS s 2 trig only 18 MS s d iig enia 8 65 3 trig only 1 DC 0 78 V 3 trig only 1 066 78 V rig only EN 1 0128 78 V 4 trig only O 4 trig only O 4 trig only muro T Jun 81 HARDCOPY T Jun 81 HARDCOPY 38 18 output to 38 55 output to E pa Int Printerk ns Int Printerk 1 80 V Card 1 00 V Card am HDD HDD GPIB GPIB r Mew 255 Fe Feed ber P a 73 TT ber protocol protocol HP 7470 HP 7470 7558 rss TIFF color TIFF color BMP color f BMP color rms 1 3 117 V rms 1 2 041 V 5 ps 10 ns ox do 00 2 trig only 8 GS s 2 trig only 8 GS s 3 trig only 1 028 78 V 3 trig only 1 DC 1 06 V 4 trig only D auto 4 trig only D auto 10 Schematic Diagrams GH17LS GH17ES 11 Panel Description VENDOR P N PANEL_ABB Description SEC LT140X1 002 SEC LT150XS L01 SEC LT150XS L01 B SEC LTM150XS L02 L02 SEC LT181E2 132 E2 18 1 132 SEC LT150XS T01 101 SEC LTM181E3 132 E3 18 1 SEC LT170E2 131 EZ SEC LT181E2 131 SEC LTM170E4 L01 SEC LTM240W1 L01 SEC LTM213U3 L01 TOSHIBA LTM15C419 TOSHIBA L
8. 1 Precautions Follow these safety servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock 1 1 Safety Precautions 1 1 1 Warnings nO For continued safety do not attempt to modify the circuit board 2 Disconnect the AC power and DC power jack before servicing 1 1 2 Servicing the LCD Monitor 1 When servicing the LCD Monitor Disconnect the AC line cord from the AC outlet 2 Itis essential that service technicians have an accurate voltage meter available at all times Check the calibration of this meter periodically 1 1 3 Fire and Shock Hazard Before returning the monitor to the user perform the following safety checks 1 Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the monitor 2 Inspect all protective devices such as nonmetallic control knobs insulating materials cabinet backs adjustment and compartment covers or shields isolation resistor capacitor networks mechanical insulators etc 3 Leakage Current Hot Check Figure 1 1 WARNING Do not use an isolation transformer during this test Use a leakage current tester or a metering system that complies with American National Standards Institute ANSI C101 1 Leakage Current for Appliances and Underwriters Laboratories UL Publication UL1410 59 7 GH17LS GH17ES READING S
9. Bi Dr Data SDA Bi Dr Data SDA 13 H Sync H V Sync Not Used 14 V Sync Not Used Not Used 15 DDC Clock SCL DDC Clock SCL DDC Clock SCL 2 2 GH17LS GH17ES 2 3 Timing Chart 2 Product Specifications This section of the service manual describes the timing that the computer industry recognizes as standard for computer generated video signals Table 2 1 Timing Chart Mode IBM VESA Foa 640 75 Hz 640 85 Hz 800 75 Hz 800 85 Hz 1024 60Hz 1024 75Hz 1024 85Hz 1280 76Hz 1280 75Hz Timing 720 x 400 640 x 480 640 x 480 640 x 480 800 x 600 800 x 600 1024 x 768 1024 x 768 1024x768 nn fH kHz 31 469 31 469 37 500 43 269 46 875 53 674 48 363 60 023 68 677 81 129 79 976 Ausec 31 777 31 778 26 667 23 111 21 333 18 631 20677 16 660 14 561 6 640 12 504 usec 3 813 3 813 2 032 1 556 1 616 1 138 2 092 1 219 1 016 6 400 1 067 C usec 1 589 1 589 3 810 2 222 3 232 2 702 2 462 2 235 2 201 2 880 1 837 D usec 26 058 26 058 20 317 17 778 62 14222 15 754 3 003 0 836 9 481 0 318 0 318 0 508 1 556 0 323 0 569 0 369 0 203 0 508 3 200 0 119 Hz 70 087 59 940 75 000 85 008 75 000 85 061 60004 75 029 84 997 76 106 75 025 O msec 14 268 16 683 13 333 11 764 13 333 11 756 16 666 3 328 11 765 10 660 13 329 Pmse
10. CO CO CO CO CO co CO co GH17LS GH17ES 7 3 7 Electrical Parts List Code No Description Specification Remarks BOX 10P 1R 1 25mm SMD A S BOX 12P 1R 1 25mm SMD A S BOX 6P 1R 1 25mm SMD A S BD4148SE 75V 200MA S BD4148SE 75V 200MA S BD4148SE 75V 200MA S BD4148SE 75V 200MA S BD4148SE 75V 200MA S BD4148SE 75V 200MA S 824 40V 2 0A D0 214AA 25VDC 2 0ADC 100nf 3 2x 25VDC 2 0ADC 100nf 3 2x 25VDC 2 0ADC 100nf 3 2x 25VDC 2 0ADC 100nf 3 2x 25VDC 2 0ADC 100nf 3 2x 25VDC 2 0ADC 100nf 3 2x AB 4 5x1 6x1 6mm AB 4 5x1 6x1 6mm AB 4 5x1 6x1 6mm AB 4 5x1 6x1 6mm m m m m m T 23 TP T 23 TP T 23 TP T 23 TP T 23 TP T 23 TP 1 lt gt lt gt X X X X X X 1 6 1 6 1 6 1 6 1 6 1 6 AB 4 5x1 6x1 6mm AB 4 5x1 6x1 6mm AB 4 5x1 6x1 6mm AB 4 5x1 6x1 6mm AB 4 5x1 6x1 6mm 24LC21A 128K8BIT SOP 6P 150MIL 5V 10 PLASTICO TO 70C 100UA CMOS TP 90637 VJD QFP 100P 550MIL PLASTIC 3 6V 2 8W 10to 700 TR Dual Pixel LVDS 24C16 2Kx8BIT SOP 8P 150MIL 10 74F132 TRIGGE 14P 150MIL TECTOR 7045 50T 89 3P PLASTIC 4 3 4 ONTROLLER AO CS2X2 88it TR CMOS PLASTIC 3V Cto 70C 250BVTE 08130008 SI9933ADY T1 P 20
11. Du AHS A185 5v ons pa NV ne CPU 5V CPU 5V some woe Ar un 5 e Mon AW gt H V_SYNC 3 mr 55 LCD 5V MAINSV pem VI TA mos Wr MN poe i ed 83 mi u Les RUE PANEL ON OFF AM Eine m a LCD 5V m Tx Lal i me pe 7 He 3 Hore aus MAIN ON OFF war LI vC PEN eee pod DA p lt MCA 8 15 se sto b to Sf on CPU 5V re gt am 12V MAIN WP 3 S vn passe T L3 CPU 5V m ED po 100nF ur anew uo C Mw 6 ew 77 ic ree RESET 24 UJ i gt wen FEE 7 PONES ani 54 Ed sv MAINSV 2 5V eain 5 m LEFT En je Zune C EXIT il 77 g yee 1 5V m y E msc A A T hn 1 D POWER m H WHITE x L BLACK lel o Nm p 06 ar Tee m 2 BL CNTC t 1 gt RIGHT 2 5V i i mo LEDA 4 L gt MENU BL_ON gt i LE s ne wow LTT CPULSV Char Chas Cras cist ous te CPU 5V 100F 109 10nF p 12V_INVERTER mao T 77 CPU 5V pom 1 d LVDS3 3V 3 3VJP sie en C lt q 16 museo NET m m p 4 MCAD 0 7
12. lt 8 15 L 4 a tr x Li som um um tie RESET Du 77 5V Hh5V 12V_MAIN 12V INVERTER y PSEN MCAD 0 7 BASIC TOUCH SCREEN H NORMAL 6 e CPU 5V CPU4SV L DPMS T CTRL L cus Cp N GH17LS GH17ES 20 ns 01 2 trig only 3 trig only 4 trig only HARDCOPY output to Int Printer Card anm HDD GPIB Feed protocol HP 7478 HP_7550 TIFF color 8 65 5 AUTO BMP color 7 Jun 01 14 39 46 50 ns 9 50 V 58 ns 0 50 mw 2 trig only 3 trig only 4 trig only HARDCOPY tipe MON t 1 1 2518 V 1 DC 8 53 V output to Int Printerk Card HDD GPIB r e Feed On protocol HP 7478 HP 7558 TIFF color 8 65 5 AUTO 10 Schematic Diagrams GH17LS GH17ES 10 Schematic Diagrams 10 2 Main Part Schematic Diagram N REDIN REDIP gt GREENIN gt AR St GREENIP BLUEIN Buer O gt cis 2 5VJS 715 N eu cis cu C22 sspe se 3 Dis DIE 017 Biz Bia Bi
13. uum TFT LCD MONITOR GH17LS GH17ES S ERVIC Manual TFT LCD MONITOR CONTENTS 1 Precautions 2 Product Specifications 3 Disassembly amp Reassembly 4 Alignments amp Adjustments 5 Troubleshooting 6 Exploded View amp Parts List ZEN 7 Electrical Parts List 8 Block Diagram 9 Wiring Diagram 10 Schematic Diagrams 11 Panel Description Samsung Electronics Co Ltd 416 Maetan 3Dong Paldal Gu Suwon City Kyungki Do Korea Printed in Korea P N BN68 00225C 00 http www samsungmonitor com SyncMaster Worldwide http www samsung monitor com SyncMaster USA http www sec co kr monitor Korea Copyright 2001 by Samsung Electronics Co Ltd All rights reserved This manual may not in whole or in part be copied photocopied reproduced translated or converted to any electronic or machine readable form without prior written permission of Samsung Electronics Co Ltd GH17LS GH17ES Service Manual First edition July 2001 Printed in Korea Trademarks Samsung is the registered trademark of Samsung Electronics Co Ltd GH17LS GH17ES and MacMaster Cable Adapter are trademarks of Samsung Electronics Co Ltd Macintosh Centris Quadra Duo Douk and Power Macintosh are trademarks of Apple Computer Inc All other trademarks are the property of their respective owners GH17LS GH17ES
14. 000nF 20 6 3V X7R TP 000nF 20 6 3V X7R TP 00nF 10 16V X7R TP 3uF 20 50V GP TP 4 OuF 20 16V GP TP 00nF 10 16V X7R TP 00nF 10 16V X7R TP F 20 16V GP TP F 20 16V GP TP 00nF 10 16V X7R TP 00nF 10 16V X7R TP 160 F 20 6 3V WT TP 10 3x10 3x10 3mm 9 uF 20 16V GP TP 6 6x6 6x5 4 00nF 10 16V X7R TP 1608 00nF 10 16V X7R TP 1608 QuF 20 16V GP TP 00nF 10 16V X7R TP uF 20 16V GP TP 00nF 10 16V X7R TP InF 5 50V NPO TP 00nF 10 16V X7R TP 1608 QuF 20 16V GP TP 4 3x4 3x5 4 F 10 16V X7R TP 1608 F 0 25pF 50V NPO TP 1608 F 0 25pF 50V NPO TP 1608 F 0 25pF 50V NPO TP 1608 00nF 10 16V X7R TP 1608 00uF 20 25V TP 8 3x8 3x6 3 16V GP TP 4 3x4 3x5 4 16V GP TP 6 6x6 6x5 4 16V X7R TP 1608 16V GP TP 4 3x4 3x5 4 16V X7R TP 1608 16V GP TP 4 3x4 3x5 4 TP 1608 16V GP TP 4 3x4 3x5 4 TP 1608 TP 4 3x4 3x5 4 v v m U v A v v v v A v v A v v v v A v v m U v m v v v v A v v v n v a v v v v A v v v v v v A v v A v v A v v v 7 2 GH17LS GH17ES 7 Electrical Parts List Description Specification Remarks ERAMIC CHIP OOnF 10 1
15. TIFF color BMP color BMP color rms 1 3 17 V rms 1 2 041 V 5 ps 18 ns v ocx ocx 2 trig only 8 65 5 2 trig only 8 65 5 3 trig only 1 DC 8 78 V 3 trig only rp 1 DC 1 06 V 4 trig only D AUTO 4 trig only D AUTO 7 Jun 81 HARDCOPY 14 38 46 output to ns Int Printerk 8 50 V Card am HDD GPIB r page Feed TA GE Xj in protocol gt HP 7478 BP 7558 TIFF b u TIFF color BMP colon 1 1 2518 V 50 ns 0 50 02 2 trig only 8 GS s 3 trig only ler 1 oc 8 53 V 4 trig only D AUTO 5 4 GH17LS GH17ES 6 Exploded View and Parts List 6 1 GH17LS GH17LS GH17ES Ing eee 21 UNIT STAND SIMPLE BN75 00169A 1 20 SCREW TAPTITE 68003 000122 BH M4 L12 2 SNA 19 VESA PLATE BN70 00183A SECC 0 1 SNA 18 COVER REAR BN72 00194A ABS HB IV16 1 SA 17 SCREW TAPTITE 6003 000122 BH M4 L12 4 SNA 16 SCREW TAPTITE 6003 000117 BH M3 L6 3 SNA 15 CABLE CLAMP 6502 000136 NYLON66 DAWS 2NB 1 SNA 14 EARTH PLATE BN71 00024A STS304 3 4H 70 1 2 SNA 13 EARTH PLATE BN71 00022A STS304 3 4H TO 1 3 SNA 12 SHIELD COVER BN70 00199A SECC T1 0 1 SNA 11 SCREW TAPTITE 6003 000117 BH M3 L6 7 SNA 10 SUPPORT POWER BN72 00209A ABS PC 1 SA 9 EARTH PLATE BN71 00024A STS304 3 4H 0 1 4 SNA 8 SHIELD D SUB BN70 00
16. TP 1608 6W DA TP 1608 6W DA TP 1608 6W DA TP 1608 gt om gt B 000hm 5 000hm 5 000hm 5 000hm 5 gt 20 20 20 20 20 220 20 20 20 D 20 220 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0 gt N Si NR gt BO BO NNN RO BO RO BO RO BO PRO BO RO BO RO BO BO RO BO RO BO RO BO PRO BO RO NNN YH YH DY IE Se oie rer E Le LC SENSE LESE SE TE rer REESE SE TE SEN SENSE NEE ee Se TE TE I I 33 73 3 gt 7 3 7 737 7 97 1 1 1 1 1 1 1 1 gt GH17LS GH17ES 7 5 7 Electrical Parts List Code No Description Specification Remarks 00ohm 5 00ohm 5 00ohm 5 ohm 5 1 000hm 5 000hm 000hm 5 000hm 5 m m m 6 6W 6W 000hm 5 000hm 5 000hm 5 00Kohm 5 1 OKOHM 5 1 JKohm 5 1 JKohm 5 1 OKOHM 5 1 000hm 5 1 1 JKohm 5 1 OKOHM 5 1 OKOHM 5 1 16W DA TP OKOHM 5 1 16W DA TP OKOHM 5 1 16W DA TP 1
17. reassembly procedures for the GH17LS GH17ES TFT LCD monitors WARNING This monitor contains electrostatically sensitive devices Use caution when handling these components 3 1 Disassembly Cautions 1 Disconnect the monitor from the power source before disassembly 2 Follow these directions carefully never use metal instruments to pry apart the cabinet 3 1 1 Removing the Stand 1 With a pad beneath it stand the monitor on its front with the screen facing downward and the base close to you Make sure nothing will damage the screen 2 Remove the 4 screws on the Stand Caution Be careful The signal cable and power cable are still attached to the monitor 3 Disconnect the Signal Cable and Power Cord 3 1 2 Main Body Disassembly Remove 2 screws on the Rear Cover Pull the Rear Cover up and off the monitor Remove 7 screws on the PCB Shield Disconnect the Function PCB wire 10P between the Function PCB and the CN103 connector on the Main PCB GH17LS GH17ES 10 Disconnect 4 Inverter wires between the Panel and the CN2 3 4 5 connectors on the Inverter PCB Disconnect the interface wire 30P between the Panel and the CN102 connector on the Main PCB Remove 3 screws on the Main PCB and 2 screws on the Inverter PCB and 2 screws on the Power Adapter PCB Disconnect the 12P harness between CN1 connector on the inverter and CN104 connector on the Main PCB Carefully lift the
18. 16V X7R CCH 00nF 10 16V X7R CCH 00nF 10 16V X7R CCH 00nF 10 16V X7R CCH 00nF 10 16V X7R 20 16V GP TP 4 20 16V GP TP 4 R R R F 10 16V X7 F 10 16V X7 00nF 10 16V X7 20 16V GP 00nF 10 16V X7 00nF 10 16V X7 00nF 10 16V X7R TP OnF 10 50V X7R TP 1608 QuF 2096 16V GP TP 4 3x4 3x5 4 OnF 10 50V X7R TP 1608 QuF 2096 16V GP TP 4 3x4 3x5 4 QOnF 1096 16V X7R TP 1608 00uF 20 16V GP TP 6 6x6 6x5 4mm 00nF 10 16V X7R TP 1608 00nF 10 16V X7R TP 1608 00nF 10 16V X7R TP 1608 OnF 10 50V X7R TP 1608 QuF 2096 16V GP TP 4 3x4 3x5 4 QuF 2096 16V GP TP 4 3x4 3x5 4 DO Ww N CO UJ UJ UJ GH17LS GH17ES 7 1 7 Electrical Parts List Code No Description Specification Remarks 022nF 5 50V NPO TP 1608 OnF 10 50V X7R TP 1608 00uF 20 25V TP 8 3x8 3x6 3 00nF 10 16V X7R TP 1608 00nF 10 16V X7R TP 1608 OnF 10 50V X7R TP 1608 OnF 10 50V X7R TP 1608 OnF 10 50V X7R TP 1608 OnF 10 50V X7R TP 1608 OnF 10 50V X7R TP 1608 F 10 50V X7R TP 1608 F 5 50V NPO TP 000nF 20 6 3V X7R TP 1608
19. 200A SECC T1 0 1 SNA 7 SCREW TAPTITE 6003 000122 BH M4 L12 4 SNA 6 GUIDE BRKT BN70 00212A SECC T1 0 4 SA 5 LCD PANEL EH TN 1 4 FUNCTION PCB 1 E 3 SCREW TAPTITE 6003 000010 110 3 SNA 2 KNOB FUNCTION BN64 00027A ABS PC 5V 1716 1 SA 1 COVER FRONT BN72 00193A ABS HB IV16 1 SNA NO PART NAME CODE SPEC Q TY REMARK UNIT PART LIST 6 Exploded View amp Parts List 6 2 GH17ES 6 2 TR LL rz ray i 19 INIT STAND PIVOT 75 00171 18 17 SCREW TAPTITE VESA PLATE 6003 000122 BH M4 L1 TO BN70 00183A SECC T1 0 16 COVER REAR BN72 00194A HB IV16 15 SCREW TAPTITE 6003 000122 BH N4 L12 4 14 SCREW TAPTITE 6003 000117 BH N3 L6 3 CABLE CLAMP 6502 000136 NYLONG6 DAWS 2NB 1 12 EARTE PLATE BN71 000244 STS304 3 4H TO 1 2 11 EARTE PLATE BN71 00022A STS304 3 4H 70 1 3 10 SHIELD COVER BN70 00199A SECC 11 0 1 9 SCREN TAPTITE 6003 000117 BH N3 L6 7 SUPPORT POWER EARTH PLATE 71 00024 15304 3 41 70 1 SHIELD D SUB BN 0 00200A SECC T1 0 LCD PANEL FUNCTION PCB SCREW TAPTITE 6003 000010 BWH M3 L10 KNOB FUNCTION BN64 00027A ABS PC 5V IV16 OP 2 CO COVER FRONT BN72 00193A ABS HB IV1
20. 5 1 18 6W DA TP 5 1 16W DA TP 5 1 16W DA TP OKOHM 5 1 16W DA TP OKOHM 5 1 16W DA TP 00Kohm 5 1 16W DA TP 5 1 16W DA TP 1608 5 1 16W DA TP 1608 5 1 16W DA TP 1608 5 1 16W DA TP 1608 hm 5 1 16W DA 1 hm 5 1 16W DA 1 5 1 16W DA TP 596 1 16W DA TP 5 1 16W DA TP hm 5 1 16W DA TP 9 1 16W DA TP 9 1 16W DA TP 5 1 16W DA TP 5 1 16W DA TP 5 1 16W DA TP O0ohm 5 1 16W DA TP hm 5 1 16W DA TP 9 1 16W DA TP 5 1 16W DA TP 5 1 16W DA TP hm 5 1 16W DA TP hm 5 1 16W DA TP 596 1 16W DA TP 596 1 16W DA TP 0 0 0 0 BO RO BO PRO PRO BO RO PRO BO PRO BO RO BO PRO BO RO BO RO BO PRO BO PRO BO BO PRO BO RO B2 B2 R2 B2 YH YH YH 1 6 GH17LS GH17ES 7 Electrical Parts List Code No Description Specification Remarks m 5 1 16W DA TP 000hm 5 1 16W DA TP 000hm 5 1 16W DA TP 000hm 5 1 16W DA TP m 5 1 16W DA TP 2 1 1 2 1 1 m 5 m 5 m 5 m 5 m 5 m m m m lt lt 6W DA TP 6W DA TP 6W DA TP 6W DA TP 6W DA TP 6W DA TP 6W DA TP 6W DA TP 5 1 16
21. 6 NO PART NAME CODE NO Q TY REMARK UNIT PART LIST GH17LS GH17ES 7 Electrical Parts List 7 1 Main PCB Parts Code No Description Specification Remarks HESIVE TS HT 130S RED 700 50 LDER WIRE S63S W3 0 9635 D3 63Sn 37Pb LDER WIRE FLUX CFATOVH 2A LDER CREAM RMA 20 21L 563 SN63 PB36 6 AGO 4 FLUX9 5 LDER WIRE FLUX RS 107 RS60 D1 2 SN60 PB40 NER 4520 DPA34L1708 100 240VAC 47 63HZ 12U 6V 2A ZA 0 10 400 PPORT POWER H15LS ABS PC GR37 5V SHIELD DSUB H17LS SPTE 10 5 S W GOGH 715 ECTOR DSUB FEMALE ANGLE AUF ECTOR HEADER OX 7P 1R 2MM ANGLE SN WHT ECTOR HEADER OX 2P 1R 2 5mm ANGLE SN CO gt gt ECTOR HEADER OWALL 3P 1R 2 54mm STRAIGHT A EPRO 270010 128KXBBIT PLCC 32P SONS V 10 PLASTIC 070 70C 0 1MA CMOS TR FERRITE BEA AB 4 5x1 6x1 6mm TE BEA AB 4 5x1 6x1 6mm AR ERR FERRITE BEA AB 4 5x1 6x1 6mm FERR AR R TE BEA AB 800hm 2x1 25x1mm 300mA TP FERRITE 0 080hm ERRITE BEA AB 800hm 2x1 25x1mm 300mA TP FERRITE 0 080hm FERRITE BEA AB 800hm 2x1 25x1mm 300mA TP FERRITE 0 080hm CCH OOnF 10 16V X7R TP 160 160 160 160 R CCH 00nF 10
22. 6V X7R TP 1608 ALSMD OuF 20 16V GP TP 4 3x4 3x5 4 ALSMD OuF 20 16V GP TP 4 3x4 3x5 4 AL SMD OuF 20 16V GP TP 4 3x4 3x5 4 CERAMIC CH 00nF 10 16V X7R TP 1608 ALSMD OuF 20 16V GP TP 4 3x4 3x5 4 AL SMD OuF 20 16V GP TP 4 3x4 3x5 4 C CH 00nF 10 16V X7R CCH 00nF 10 16V X7R C CH 00nF 10 16V X7R TP CCH 00nF 10 16V X7R C CH 00nF 10 16V X7R TP CCH 00nF 10 16V X7R 00nF 10 16V X7R CCH 00nF 10 16V X7R C CH 00nF 10 16V X7R TP CCH 00nF 10 16V X7R 00nF 10 16V X7R TP CCH 00nF 10 16V X7R C CH 00nF 10 16V X7R R R R R R P R R P R R R R gt lt gt CCH 00nF 10 16V X7R TP CCH 00nF 10 16V X7R CCH 00nF 10 16V X7R C CH 00nF 10 16V X7R TP CCH 00nF 10 16V X7R TP C CH 10 50V X7R TP CCH 00nF 10 16V X7R TP 00nF 10 16V X7R TP 20 16V GP TP 10 50V X7R TP 00nF 10 16V X7R TP 00nF 10 16V X7R TP 00nF 10 16V X7R TP 00nF 10 16V X7R TP 10 50V X7R TP 10 50V X7R TP OuF 20 16V GP TP 4 3x4 3x5 4 10 50V X7R TP 1608 TUF 20 25V GP TP 3 6x6 3x3 10 50V X7R TP 00nF 10 16V X7R TP OuF 20 16V GP TP 4 00nF 10 16V X7R TP 160 F 20 25V GP TP 3 F 10 16V X7R TP OuF 20 16V GP TP 00nF 10 16V X7R TP 00nF 10 16V X7R TP 00nF 10 16V X7R TP 160 F 20 6 3V WT TP 10 3x10 3x10 3mm 9 X 30P 1R 1 25mm SMD A SN CO CO OO CO
23. DCOPY 135 14 35 54 output to 1 output to 20 ns Int Printerk 20 ns Int Printerk 1 00 v Card 1 80 V Card am HDD HDD GPIB r GPIB page Feed page Feed 77 1 protocol protocol HP 7478 HP 7478 7559 HP 7550 TIFF b w ud TIFF color TIFF color BMP color T BMP color r rms 1 3 591 V rms 1 2 335 V 20 ns 20 ns 01 Q och 2 trig only 8 GS s 3 trig only 8 GS s 3 trig only 1 0 8 54 V trig only 1 066 78 V 4 trig only auto 4 trig only AUTO T Jun 81 HARDCOPY T Jun 81 HARDCOPY P 37 13 output tt 37 54 output 5 Int Printerk og Int Printerk 1 80 V Card 1 80 V Card HDD HDD GPIB r GPIB page Feed page Feed nem protocol protocol HP 7478 HP 7478 7558 7558 TIFF b u TIFF b u TIFF colon TIFF colon T BMP colon BMP color rms 3 323 V 1 3 272 V 5 ns 5 ps ocx ocx 2 trig only 18 MS s 2 trig only 8 GS s 3 trig only gt 1 066 78 V 3 trig only 1 066 78 V 4 trig only auto 4 trig only auto run oi HARDCOPY 7 Jun 81 HARDCOPY E output to en output to 5 ps Int Printerk Int Printerk 10 ns 1 08 V Card 1 08 V Card am am HDD HDD GPIB r GPIB r mn page Feed m 2 PU LER protocol protocol HP 7478 7478 gt 7550 V 7558 w b u TIFF b u TIFF color
24. Electrical Parts List Code No Description Specification Remarks ALL SIGNAL 28C2412K NPN 200mW SC 59 TP 120 270 ALL SIGNAL 28C2412K NPN 200mW SC 59 TP 120 270 ALL SIGNAL 28C2412K NPN 200mW SC 59 TP 120 270 4 7Kohm 5 1 16W DA TP 1608 4 7Kohm 5 1 16W DA TP 1608 00hm 5 1 16W DA TP 1608 00ohm 5 1 16W DA TP 1608 00ohm 5 1 16W DA TP 1608 00ohm 5 1 16W DA TP 1608 Oohm 5 1 16W DA TP 160 Oohm 5 1 16W DA TP 16 00ohm 5 1 16W DA TP 1 OKOHM 5 1 16W DA TP OKOHM 5 1 16W DA TP 5 1 16W_DA TP n 5 1 16W DA TP 5 1 16W DA TP M 5 1 16W DA TP M 5 1 16W DA TP M 5 1 16W DA TP n 5 1 16W DA TP M 5 1 16W DA TP M 5 1 16W DA TP m 5 1 16W DA TP m 5 1 16W DA TP m 5 1 16W DA TP 47ohm 5 1 16W DA TP 47ohm 5 1 16W DA TP 47ohm 5 1 16W DA TP n n n n h N 470 470 470 N N 47ohm 5 1 16W DA TP 470hm 5 1 16W DA TP 47ohm 5 47ohm 5 1000hm 5 470hm 5 4 7Kohm 5 1 16W DA TP 4 7Ko 1 16W DA TP 4 ohm 47ohn 1000h 47ohn 4 ohm i CO CO CO CO CO CO N co 16W DA TP 16W DA TP 1 16W DA TP 16W DA TP 1 16W DA TP 1 16W DA TP CO CO co oo 470 4 ohm 470 4 ohm 470 gt 6W DA TP 6W DA TP 6W DA TP 6W DA TP 6W DA
25. H17ES 7 7 7 Electrical Parts List Description Specification Remarks R CH HM 5 1 16W DA TP 16 R CH HM 5 1 16W DA TP 16 R CH HM 5 1 16W DA TP 16 R CH HM 5 1 16W DA TP 16 R CH HM 5 1 16W DA TP 16 R CH hm 5 1 16W DA TP 160 R CH hm 5 1 16W DA TP 160 R CH hm 5 1 16W DA TP 160 R CH hm 5 1 16W DA TP 160 R CH hm 5 1 16W DA TP 160 R CH hm 5 1 16W DA TP R CH hm 5 1 16W DA TP R CH 596 1 16W DA TP R CH hm 5 1 16W DA TP R CH 596 1 16W DA TP R CH hm 5 1 16W DA TP R CH 596 1 16W DA TP R CH 5 1 16W DA TP R CH 596 1 16W DA TP R CH 596 1 16W DA TP 1 1 R CH 596 1 16W DA TP R CH 596 1 16W DA TP R CH 7Kohm 5 1 16W DA TP R CH 596 1 16W DA TP 160 R CH 5 1 16W DA TP R CH 5 1 16W DA TP CORE FERRITE BEAD hm 1 6x0 8x0 8mm 200mA TP H 0 70hm CORE FERRITE BEAD hm 1 6x0 8x0 8mm 200mA TP H 0 70hm CORE FERRITE BEAD hm 1 6x0 8x0 8mm 200mA TP H 0 70hm ETWORK 220hm 5 63mW L CHIP 8P WORK 220hm 5 63 HIP 8P WORK 220hm 5 63 HIP 8P WORK 220hm 5 63 HIP 8P WORK 220hm 5 63 HIP 8P WORK 220hm 5 63 HIP 8P WORK 220hm 5 63 HIP 8P WORK 220hm 5 63 HIP 8P WORK 220hm 5 63 HIP 8P WORK 220hm 5 63 HIP 8P WORK 220hm 5 63 HIP 8P WORK 220hm 5 63 HIP 8P WORK 220hm 5 63 HIP 8P NETWORK 220hm 5 63 HIP 8P TP CRYSTAL SMD 14 3182MHZ 50PPM 28 AAN 16 500HM TP SCILLATOR CLOCK 14 31818MHZ 100PPM 30PF TP 3 3V 15MA IODE ZENE BZX84C5V1 5 1V 5 200mW S0T 23
26. HOULD NOT BE ABOVE 0 5mA LEAKAGE DEVICE CURRENT UNDER TESTER TEST TEST ALL EXPOSED METAL SURFACES 2 WIRE CORD ALSO TEST WITH PLUG REVERSED USING AC ADAPTER PLUG AS REQUIRED EARTH GROUND Figure 1 1 Leakage Current Test Circuit 4 With the unit completely reassembled plug the AC line cord directly into a 120V AC outlet With the unit s AC switch first in the ON position and then OFF measure the current between a known earth ground metal water pipe conduit etc and all exposed metal parts including metal cabinets screwheads and control shafts The current measured should not exceed 0 5 milliamp Reverse the power plug prongs in the AC outlet and repeat the test 1 1 4 Product Safety Notices Some electrical and mechanical parts have special safety related characteristics which are often not evident from visual inspection The protection they give may not be obtained by replacing them with components rated for higher voltage wattage etc Parts that have special safety characteristics are identified by AN on schematics and parts lists A substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock fire and or other hazards Product safety is under review continuously and new instructions are issued whenever appropriate 1 Precautions 1 2 Servicing Precautions Before servicing units covered by thi
27. Main PCB Assembly and Inverter PCB and place them on a flat level surface that is protected from static electricity Remove 4 screws on the Bracket Guide GH17LS only Remove 3 screws on the Function PCB from the Front Cover and remove the Function PCB and Function Knob 3 Disassembly and Reassembly 3 2 Reassembly Reassembly procedures are in the reverse order of Disassembly procedures 3 2 GH17LS GH17ES 4 Alignments and Adjustments This section of the service manual explains how to use the RS232 JIG This function is needed when AD Board Change and program memory IC110 change 4 1 Required Equipment The following equipment is necessary for adjusting the monitor Computer with Windows 95 Windows 98 or Windows RS232 JIG 4 2 RS232 Jig Setup 1 Install Hyper Terminal program from windows system 2 Configure Baud rate to 19200 select appropriate COM port 3 Make the Hardware setup as per figure shown Power AD Adapter Board RS232 JIG Function Serial cable Board Figure 4 1 4 Establish the connection by selecting Connect from hyper Terminal 5 Power on the board now you see messages in the application window If no messages than check for 1 2 and 3 again Message Gogh 17 fw copyright c 2000 2001 Sage Date Er Chip ID b1 Panel Samsung 17 SXGA GH17LS GH17ES 4 3 Changing Board Before replacing the AD Board read all
28. Panel information data by using S232 JIG and hyper terminal 1 Type character Service Menu for Gogh 17 Model 1 Read 2 Modify upper Back Light Value 3 Modify Lower back Light Value 4 Modify Panel On Time Value 5 Exit Service Menu Enter 1 Upper Backlight Time Expired in hours Lower Backlight Time Expired in hours Panel On Time in hours Please note down these values Than change to new board Execute the command read the values You will see these are set to default values Change the values to the recorded values Exit the service menu by command 2 Color Auto Adjustment After function 1 Assemble the monitor And display 16 Gray pattern or black and white mixed pattern Then push Exit and key of function same time During normal execution of Auto Algorithm the screen image may changed 4 4 Program memory 10110 change Follow same method as changing Board 4 3 4 Alignments and Adjustments Memo 4 2 GH17LS GH17ES 5 Troubleshooting e Resolution 1280 x 1024 H frequency 64 kHz V frequency 60 Hz to the factory preset Notes 1 Before troubleshooting setup the PC s display as below 2 f no picture appears make sure the power cord is correctly connected 3 f you push and hold the EXIT button for more than 5 seconds the monitor automatically turns back 5 1 1 No Power When Pin 6 of CN105 is OV does
29. TM15C423 TOSHIBA LTM18C161 HANNSTAR HSD150MX41A TORISAN TM150XG 22L03 SHARP LO181E1DG11 HITACHI TX38D12VCOCAA IBM 15 945 UNIPAC UM170E01 SEC LTM170EH L91 L170 E3 1 GH17LS GH17ES 11 1 11 Panel Description Memo 11 2 GH17LS GH17ES
30. V 3 4A 0 060hm 2W S0 8 LOGIC T4ABT573 LATCH TSSOP 20P 173MILB TR PLASTIC 3 STATE 0 55V 1500 045 32P PLCC SN 1 FIXED REG 033 0 252 3P 6 5MIL PLASTIC 3 FIXED REG 7805 10 252 3P PLASTIC 4 8 5 JUST REG 317 10 263 3P PLASTIC 1 2 37 JUST REG 317 10 263 3P PLASTIC 1 2 37 SI9933ADY T1 P 20V 3 4A 0 060hm 2W S0 8 LLER JAGASM BGA 388P 208MIL PALATIC 345V 25W 4070 125C 1R DIGITAL DISPLAY PRO 3 3UH 20 3 2X2 5X2 2M 3 3UH 20 3 2X2 5X2 2M 3 3UH 20 3 2X2 5X2 2M GHI17LS FR4 4L 1 0 1 6 120X110 C2412K NPN 200mW SC 59 TP C2412K NPN 200mW SC 59 TP C2412K NPN 200mW SC 59 TP C2412K NPN 200mW SC 59 TP EH ER FB Bn B 5 5 gt gt I I gt I gt LS gt o Sor C E E co gt gt gt gt gt iss ms CO rn CO Fi gt UJ N C2412K NPN 200mW SC 59 TP C2412K NPN 200mW SC 59 TP C2412K NPN 200mW SC 59 TP O 7 4 GH17LS GH17ES 7
31. W DA TP 9 1 16W DA TP m 5 1 16W DA TP OKOHM 5 1 16W DA TP n 5 1 16W DA TP 5 1 16W DA TP n 5 1 16W DA TP 5 1 16W DA TP n 5 1 16W DA TP m 5 1 16W DA TP 9 1 16W DA TP 9 1 16W DA TP 9 1 16W DA TP 9 1 16W DA TP 5 1 16W DA TP 5 1 16W DA TP m 9 1 16W DA TP 9 1 16W DA TP 5 1 16W DA TP 16 5 1 16W DA TP 9 1 16W DA TP n 5 1 16W DA TP n 5 1 16W DA TP 5 1 16W DA TP 5 1 16W DA TP 5 5 5 5 5 5 ee 5 1 16W DA TP 5 1 16W DA TP 5 1 16W DA TP 5 1 16W DA TP 5 1 16W DA TP BO RS BO RO BO RO BO BO RO BO BO BO BO BO B2 DY Te oe EVE ENTE See SE SE e ES LL ENTE SE SENSE rer TE Sc Ser Seren 73 7 77 7 7 7 7 7 77 7 3 7 5 GH17LS G
32. ation resistance between each blade of the AC plug and accessible conductive parts see above should be greater than 1 megohm Always connect a test instrument s ground lead to the instrument chassis ground before connecting the positive lead always remove the instrument s ground lead last 1 3 Electrostatically Sensitive Devices ESD Precautions Some semiconductor solid state devices can be easily damaged by static electricity Such components are commonly called Electrostatically Sensitive Devices ESD Examples of typical ESD devices are integrated circuits and some field effect transistors The following techniques will reduce the incidence of component damage caused by static electricity 1 Immediately before handling any semiconductor components or assemblies drain the electrostatic charge from your body by touching a known earth ground Alternatively wear a discharging wrist strap device To avoid a shock hazard be sure to remove the wrist strap before applying power to the monitor After removing an ESD equipped assembly place it on a conductive surface such as aluminum foil to prevent accumulation of an electrostatic charge Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ESDs Use only a grounded tip soldering iron to solder or desolder ESDs Use only an anti static solder removal device Some solder removal devices not classified as anti static
33. c 0 064 0 064 0 080 0 671 0 064 0 056 0 124 0 050 0 044 0 080 0 038 0 858 0 794 0 427 0 578 0 448 0 503 0 600 0 466 0 524 3 200 0 475 Rmsec 13 155 15 761 12 800 11 093 2 800 11 179 15 880 2795 11 183 12 804 Smsec 0 191 0 064 0 027 0 023 0 021 0 019 0 062 0 017 0 01 0 020 0 013 Clock Freq 28 322 25 175 31 500 49 500 49 500 56 250 75 000 78 750 94500 135 000 135 000 MHz Polarity H Sync Negative Negative Negative Negative Positive Positive Negative Positive Positive Negative Positive V Sync Positive Negative Negative Negative Positive Positive Negative Positive Positive Negative Positive Remark Separate Separate Separate Separate Separate Separate Separate Separate Separate Com Separate Separate Sync H V Composite Sync vDo Hori i lt R sla ds Horizontal Vertical T Sync on Green Sync Sync Vertical de be ann 0 gt ja 5 5 B A Line time total Back porch E Front porch B Horizontal sync width D Active time O Frame time total Q Back porch 5 Front porch P Vertical sync width Active time GH17LS GH17ES 2 Product Specifications Memo 2 4 GH17LS GH17ES 3 Disassembly and Reassembly This section of the service manual describes the disassembly and
34. can generate electrical charges sufficient to damage ESDs 6 Do not remove a replacement ESD from its protective package until you are ready to install it Most replacement ESDs are packaged with leads that are electrically shorted together by conductive foam aluminum foil or other conductive materials Immediately before removing the protective material from the leads of a replacement ESD touch the protective material to the chassis or circuit assembly into which the device will be installed Caution Be sure no power is applied to the chassis or circuit and observe all other safety precautions Minimize body motions when handling unpackaged replacement ESDs Motions such as brushing clothes together or lifting your foot from a carpeted floor can generate enough static electricity to damage an ESD GH17LS GH17ES 2 Product Specifications 2 1 Specifications Description Item GH17LS GH17ES LCD Panel TFT LCD panel RGB vertical stripe normally black transmissive 17 Inch viewable 0 264 H x 0 264 V mm pixel pitch Scanning Frequency Horizontal 30 kHz 81 kHz Automatic Vertical 56 Hz 85 Hz XGA 76 Hz SXGA GHT7ES Vertical 56 Hz 76 Hz GH17LS Display Colors 16 7 Million colors Maximum Resolution Horizontal 1280 Pixels Vertical 1024 Pixels Input Video Signal Analog 0 714 Vp p 5 positive at 75 Q internally terminated Input Sync Signal Type Seperate H V sync Com
35. posite H V Sync on Green Level TTL level V high gt 2 0 V V low lt 0 8 V Sync on Green 0 25 V Maximum Pixel Clock rate 135 MHz Active Display Horizontal Vertical 338 3 mm 270 3 mm AC power voltage amp Frequency AC 90 264 Volts 60 50 Hz 3 Hz Power Consumption 42 W max 40W normal Dimensions Unit W x D x H 17 5 x 18 0 x 82 Inches 444 x 457 x 208 4 mm Carton W x D x H 20 7 x 107 x 20 9 Inches 527 x 271 x 532 mm Weight Net Gross 5 4 kg 11 9 Ibs 7 9 kg 17 4 Ibs 5 8 kg 12 8 165 8 3 kg 18 3 Ibs Environmental Considerations Operating Temperature 50 F 104 F 10 C 35 C Humidity 10 80 Storage Temperature 68 F 113 F 20 C 45 C Humidity 5 95 96 GH17LS GH17ES comply with SWEDAC MPRII recommendations for reduced electromagnetic fields e Designs and specifications are subject to change without prior notice GH17LS GH17ES 2 1 2 Product Specifications 2 2 Pin Assignments Sync 15 Pin D Sub Signal Cable Connector Type Pin No Separate Composite Sync on green 1 Red Red Red 2 Green Green Green H V Sync 3 Blue Blue Blue 4 GND GND GND 5 DDC Return GND DDC Return GND DDC Return GND 6 GND R GND R GND R 7 GND G GND G GND G 8 GND B GND B GND B 9 DDC Power Input 5V DDC Power Input 5V DDC Power Input 5V 10 Self Raster Self Raster Self Raster 11 GND GND GND 12 Bi Dr Data SDA
36. proper DC 12V 5V appear at Pin 1 2 and 7 of CN105 seperately Yes Does proper DC 5 V appear at Pin 3 of 1 115 Does proper DC 3 3 V appear at Pin 3 of IC112 Yes Does proper DC 2 5 V appear at Pin 2 of IC116 and IC117 OV means power on state GH17LS GH17ES No No No No Change power Adaptor Check IC115 and related circuit Check IC112 and related circuit Check IC116 117 and related circuit 5 Troubleshooting 5 1 2 No Power When Pin 6 of CN105 is Change power Adaptor around 2V does proper DC 8V No appear at Pin 1 and 7 of CN105 seperately Yes Does proper DC 5 V appear at No Pin 3 of IC115 Check IC115 and related circuit Push Power button Does proper at Pin 6 of No Check function PCB Assy and related circuit CN105 Does proper DC 3 3 V appear at No Pin 3 of 10112 Check IC112 and related circuit Yes Does proper DC 2 5 V appear at No Pin 2 of IC116 10117 Check IC116 1C117 and related circuit NM PA 2 lt 2 lt 2V means soft power off or DPMS state 5 2 GH17LS GH17ES 5 2 No Video Check signal cable connection and power 5 Troubleshooting Does the X101 and X201 oscillate properly A Replace that or check related circuit
37. s service manual read and follow the Safety Precautions WARNING An electrolytic capacitor installed with the wrong polarity might explode Caution section of this manual Note If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions always follow the safety precautions 1 2 1 General Servicing Precautions 1 Always unplug the unit s AC power cord from the AC power source and disconnect the DC Power Jack before attempting to a remove or reinstall any component or assembly b disconnect PCB plugs or connectors c connect a test component in parallel with an electrolytic capacitor Some components are raised above the printed circuit board for safety An insulation tube or tape is sometimes used The internal wiring is sometimes clamped to prevent contact with thermally hot components Reinstall all such elements to their original position After servicing always check that the screws components and wiring have been correctly reinstalled Make sure that the area around the serviced part has not been damaged Check the insulation between the blades of the AC plug and accessible conductive parts examples metal panels input terminals and earphone jacks Insulation Checking Procedure Disconnect the power cord from the AC source and turn the power switch ON Connect an insulation resistance meter 500 V to the blades of the AC plug The insul

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