Appliances), and Underwriters Laboratories (UL characteristics as the recommended replacement part Publication UL1410, 59.7). might create shock, fire and/or other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate. GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/ GG15V*/GG15V*(R)/GG15E*/GG15E*(R)
ESDs. Motions such as solder removal devices not classified as “anti-static” brushing clothes together, or lifting your foot from can generate electrical charges sufficient to damage a carpeted floor can generate enough static ESDs. electricity to damage an ESD. GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/ GG15V*/GG15V*(R)/GG15E*/GG15E*(R)
GND-G GND-G GND-B GND-B GND-B No Connection No Connection Not Used GND-Sync./Self Test GND-Sync./Self Test GND-Sync./Self Test DDC Data DDC Data DDC Data H-Sync. H/V-Sync. Not Used V-Sync. Not Used Not Used DDC Clock DDC Clock DDC Clock GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/ GG15V*/GG15V*(R)/GG15E*/GG15E*(R)
B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/ GG15V*/GG15V*(R)/GG15E*/GG15E*(R)
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B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/ GG15V*/GG15V*(R)/GG15E*/GG15E*(R)
CONFIDENTIAL 3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/GG15V*/GG15V*(R)/GG15E*/GG15E*(R) monitor. WARNING: This monitor contains electrostatically sensitive devices. Use with caution when handling these components. 3-1 Disassembly Cautions:1. Disconnect the monitor from the power source before disassembly.
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CONFIDENTIAL 3 Disassembly and Reassembly 3. Disconnect the video cable and power cord. 4. Remove 4 screws from the rear cover. 5. Open the rear cover using the jig. GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/ GG15V*/GG15V*(R)/GG15E*/GG15E*(R)
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CONFIDENTIAL 3 Disassembly and Reassembly 6. Pull the rear cover. 7. Remove 4 screws of the panel. 8. Disconnect the function cable. GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/ GG15V*/GG15V*(R)/GG15E*/GG15E*(R)
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CONFIDENTIAL 3 Disassembly and Reassembly 9. Disconnect the inverter cable. 10. Disconnect the LVDS cable. 3-1-2 GG15AS/GG15AS(R) 1. Disconnect the video cable. GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/ GG15V*/GG15V*(R)/GG15E*/GG15E*(R)
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CONFIDENTIAL 3 Disassembly and Reassembly 2. Remove 4 screws of the stand. 3. Remove the stand from LCD monitor. 4. Turn the monitor over as the figure above. GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/ GG15V*/GG15V*(R)/GG15E*/GG15E*(R)
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CONFIDENTIAL 3 Disassembly and Reassembly 5. Open up the top part of front cover. 6. Open the rear cover using the hands. 3-2 Reassembly Reassembly procedures are in the reverse order of disassembly procedures. GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/ GG15V*/GG15V*(R)/GG15E*/GG15E*(R)
• 12V does not develop: Audio PCB, SMPS PCB 4. If you push and hold the “EXIT” button for more than 5 seconds, the monitor automatically turns back to the factory preset. 4-1 No Power [GG15AS/GG15L*/GG15V*/GG15E*] Does proper DC 12 V Check SMPS or CN120.
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CONFIDENTIAL 4 Troubleshooting 4-2 No Video [GG15AS/GG15L*/GG15V*/GG15E*] Does the H-sync pulse Check CN190. appear at Pin 43 of IC300? Does the H-sync pulse Replace IC300 or appear at Pin 34 of IC300? check its related circuit. Does the V-sync pulse check CN190.
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CONFIDENTIAL 4 Troubleshooting 4-2-1 No Video [GG15AS(R)/GG15L*(R)/GG15V*(R)/GG15E*(R)] Does the H-sync pulse Check CN190. appear at Pin 43 of IC102? Does the H-sync pulse Replace IC102 or appear at Pin 34 of IC102? check its related circuit. Does the V-sync pulse Check CN190.
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CONFIDENTIAL 4 Troubleshooting 4-3 User Controls Don’t Work [GG15AS/GG15L*/GG15V*/GG15E*] Does the DC level change at Check the buttons. Pin 16 and 17 of IC300 when you (SW1~SW6) push the front panel button? Refer to 4-4 No OSD Display. 4-3-1 User Controls Don’t Work [GG15AS(R)/GG15L*(R)/GG15V*(R)/GG15E*(R)] Does the DC level change at Check the buttons.
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CONFIDENTIAL 4 Troubleshooting 4-4 No OSD [GG15AS/GG15L*/GG15V*/GG15E*] There is video but no OSD. While pushing a front control button does any pulse Replace IC102 or appear at Pin 121, 124~131 and check its related circuit. 135~137 of IC200? Replace IC200.
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CONFIDENTIAL 5 Exploded View and Parts List 5-1 GG15L*/GG15V*/GG15E* GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/ GG15V*/GG15V*(R)/GG15E*/GG15E*(R)