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Summary of Contents for ViewSonic VG700b-2 VLCDS24606-1W
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Page 1: Service Manual
Service Manual ViewSonic VG700b-2 Model No. VLCDS24606-1W 17” Color TFT LCD Display (VG700b-2_SM_605 - Rev. 1b Feb. 2004) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583... -
Page 2: Revision History
Further, ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes. -
Page 3: Table Of Contents
4. Circuit Description 5. Adjusting Procedure 6. Trouble Shooting Flow Chart 7. Recommended Spare Parts List 8. Exploded Diagram And Spare Parts List 9. Block Diagram 10. Schematic Diagrams 11. PCB Layout Diagrams ViewSonic Corporation VG700b-2 Confidential – Do Not Copy... -
Page 4: Precautions And Safety Notices
1.0 milliamp. In the case of a measurement exceeding the 1.0 milliamp value, a rework is required to eliminate the chance of a shock hazard. AC VOLTMETER 0.15u 1500 To Metal Parts Earth Ground ViewSonic Corporation VG700b-2 Confidential – Do Not Copy... -
Page 5: Specification
3W x 2 (chip :TPA3002D2) AC Power range 90 V ~ 264 V, 50 Hz / 60 Hz Power consumption < 48W green / < 3W amber ff mode) (On / O ViewSonic Corporation VG700b-2 Confidential – Do Not Copy... -
Page 6: Front Panel Function Control Description
Also toggles Decreases or between two controls on some screens. increases volume Also a shortcut to auto image adjust Main Menu With On View controls Front Control Panel shown below in detail ViewSonic Corporation VG700b-2 Confidential – Do Not Copy... -
Page 7: Main Menu Controls
H. OSD Position allows you to move the on-screen display menus and control screens. I. Memory Recall returns adjustments to the original factory settings if the display is operating in a factory Preset Timing Mode listed in this user guide. ViewSonic Corporation VG700b-2 Confidential – Do Not Copy... -
Page 8: Circuit Description
MNEMONI SIGNAL Red Video Green Video Blue Video None Ground(DDC return) Red GND Green GND Blue GND + 5V (for DDC) Sync GND None DDC Data Horizontal Sync Vertical Sync DDC Clock ViewSonic Corporation VG700b-2 Confidential – Do Not Copy... - Page 9 3.4.1 Video Signal level This LCD display is adjusted at the factory using 0, 7 Vp-p Video signal. 3.4.2 Sync Signal level H/V Separate: TTL level 3.4.3 Input impedance Video input: 75 ohms Sync input: > 1 k ohms ViewSonic Corporation VG700b-2 Confidential – Do Not Copy...
- Page 10 State Power Indicator 48Watts Green Standby <3Watts Amber <3Watts None...
- Page 11 4-4. SIGNAL CABLE: Signal cable with Mini D-Sub 15P connectors at both ends . Length: 1.8 meter. 4-5 . EDID data Analog EDID Time: 09:08:54 Date: Wed Sep 04, 2002 ______________________________________________________________________ ______________________________________________________________________ VIEWSONIC CORPORATION EDID Version # 1, Revision # 3 DDCTest For: VSC VG700b-2 ______________________________________________________________________ ______________________________________________________________________ 60 | 70 |...
- Page 12 Normal display, no stereo HORIZONTAL: Active Time = 1280 pixels Blanking Time = 408 pixels Sync Offset = 48 pixels Sync Pulse Width = 112 pixels Border = 1 pixels Frequency = 64.0 kHz ViewSonic Corporation VG700b-2 Confidential – Do Not Copy...
- Page 13 The heart of the system board is Genesis gm2121. The gm2121 is a graphics processing IC for LCD monitor. It provides all key IC functions required for LCD panel. On-chip functions include a high-speed triple-ADC, PLL, high scaling engine, OSD controller and on-chip micro controller. ViewSonic Corporation VG700b-2 Confidential – Do Not Copy...
- Page 14 On-Chip Micro controller (OCM): The gm2121 on-chip micro controller (OCM) serves as the system micro controller. That is, it programs the gm2121 and manages other devices in the system such as the keypad, the backlight, LED, audio and non-volatile RAM. Using general purpose input/output (GPIO) pins. ViewSonic Corporation VG700b-2 Confidential – Do Not Copy...
- Page 15 2, 6 of the TPA3003D2. The output gain is controlled by pin 11. 1.5 Inverter Board This is a specific inverter for L7VB monitor backlight which converters 12 Vdc to drive four cold cathode fluorescence tubes. Electrical specification described as below. ViewSonic Corporation VG700b-2 Confidential – Do Not Copy...
- Page 16 1.6 Adapter This is a general purpose AC / DC adapter which converts 90~240 Vac to a stabilized DC, 12V with rated output current of 4.16A. Electrical specification described as below. ViewSonic Corporation VG700b-2 Confidential – Do Not Copy...
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Page 17: Adjusting Procedure
Press “2” Button to show the information. Press “1” Button to exit Information page. (5) Manual Image Adjust Page: Press “2” Button to enter Manual Image Adjust page. Press “1” Button to exit Manual Image Adjust page. ViewSonic Corporation VG700b-2 Confidential – Do Not Copy... - Page 18 Press “2” Button to select the language. Press “1” Button to exit the option. 2) Resolution Notice Item Press “2” Button to enter Resolution Notice item. Press “1” Button to exit Resolution Notice item. ViewSonic Corporation VG700b-2 Confidential – Do Not Copy...
- Page 19 Press “1” Button to exit the Contrast Dialog. Press “2” Button to enter the Brightness Dialog. Press Up Button to make contrast high. Press Down Button to make contrast low. (2) Brightness Dialog ViewSonic Corporation VG700b-2 Confidential – Do Not Copy...
- Page 20 Press Right Button to make volume high. (4) Mute Dialog Press Mute Button to switch mute to volume or volume to mute. (5) Auto Image Adjust Dialog Press “2” Button to do the auto image adjusts function. ViewSonic Corporation VG700b-2 Confidential – Do Not Copy...
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Page 21: Trouble Shooting Flow Chart
+5V OK? Q7, R68 Change U6 L21, R71, R73 +3.3V OK? Change NG component Change U8 or Check U2 L20, R70, R72 +2.5V OK? Change NG component Change U7 or check U2 ViewSonic Corporation VG700b-2 Confidential – Do Not Copy... -
Page 22: Viewsonic Corporation
Check CN7 Change U2 Check RGB Change NG component input circuit Check Panel Change Panel Check LVDS Change NG component out put circuit Check LCD Change CN5 Check CN5 Change LCD Cable Cable ViewSonic Corporation VG700b-2 Confidential – Do Not Copy... -
Page 23: White Screen
Pin 11= 0V? Change L3 L3 open? Change U1 Check L8 Change L8 Open? Check U1 Pin 16, 17, Change NG component Check C35, R42 Change speaker 20, 21, 40, 41, 44, 45 Short? ViewSonic Corporation VG700b-2 Confidential – Do Not Copy... -
Page 24: Recommended Spare Parts List
7. Recommended Spare Parts List VG700b-2 Recommended Spare Parts List Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty B-IF-0222-0050 21L7VSB0021 scaler Board B-SB-0221-0568 AS022172502 Inverter P-BX-0601-0898 HFL7V004016 Carton P-FM-0602-0542 HBL7V001013 Polyform (right) P-FM-0602-0543 HBL7V002010 Polyform (left) M-MS-0808-8981 HAL7V001012... - Page 25 VG700b-2 BOM Parts List Item ViewSonic P/N Ref. P/N Part Description Location Universal number# #N/A 1L7VZZZVS78 L7VB LCD MONITOR (LG) EUROPE B-IF-0222-0050 21L7VSB0021 L7VB SCALAR/B ASSY (LG) B-IF-0222-0051 31L7VSS0016 L7VB SCALAR/B S/S ASSY #N/A AJ02121^C15 IC(160P) GM2121_AD (162MHZ,PQFP) #N/A AKE1B8APN03...
- Page 26 Item ViewSonic P/N Ref. P/N Part Description Location Universal number# M-MS-0808-7694 DFHD06MR093 CONN DIP HEADER 6P 1R MR(P2.5,H4.1) M-MS-0808-7695 DFHD11MR043 CONN DIP HEADER 11P 1R MR(P1.5,H4.1) #N/A DFHD30MS531 CONN DIP HEADER 30P 2R MS(P2.0,H4.0) M-MS-0808-7697 DFPJ03MR140 CONN POWER JACK 3P MR...
- Page 27 Item ViewSonic P/N Ref. P/N Part Description Location Universal number# M-FC-0809-0777 DDL7VBIV005 CABLE ASSY L7VB INVERTER(6P,REV2A) M-FC-0809-0795 DDL70LLC201 CABLE ASSY L70L MB-LCD(30P,REV2A)FOR LG #N/A FCL7V002011 FILM BEZEL (FCL7V002,REV3A) M-MS-0808-8981 HAL7V001012 EPE BAG L7V(HAL7V001,REV3A) P-FM-0602-0542 HBL7V001013 END CAP R L7V(HBL7V001,REV3A) P-FM-0602-0543...
- Page 28 8. Exploded Diagram And Spare Parts List ViewSonic Corporation Confidential – Do Not Copy VG700b-2...
- Page 29 VG700b-2 Exploded Parts List Item ViewSonic P/N Ref. P/N Description Q'TY C-BC-0302-0475 EAL7V003015 BACK COVER(EAL7V003,REV3A) M-CV-0830-2484 FBL7V007011 KENSINGTON CAP(FBL7V007,REV3A) M-LCD-0826-0213 AA17EL01001 LCD(TFT) 17"LG LM170E01-A5(SXGA) M-BK-0805-0024 FBL7V021014 VESA META L L7VB(FBL7V021,REV3A) M-MS-0808-7709 GAL7V004011 RUBBER PAD REAR(GAL7V004,REV3A) M-SCW-0824-0728 MM30050IBJ3 SCREW M3.0*5.0-I(NI) M-SCW-0824-6759 MM40080BBJ4 SCREW M4.0*8-B(NI)
- Page 30 (CN4) 9.3 Power 12V Input P-MOS (From Adaptor ) AIC1563 NDS9410 For U9,U4,U5, PANEL (U6) (Q7) 3. 3V TPA3003D2 LT1117 For U3, U2 (U7) (U1) 2. 5V LT1117 Inverter For U2 (U8) ViewSonic Corporation VG700b-2 Confidential – Do Not Copy...
- Page 31 TOP LEVEL Input Connector gm2121 Display RED+ RED+ RED+ RED- RED- RED- GREEN+ GREEN+ GREEN+ GREEN- GREEN- GREEN- BLUE+ BLUE+ BLUE+ BLUE- BLUE- BLUE- GPO1 GPO1 GPO2 GPO2 Mute_F Mute_F MUTE MUTE MUTE HCLK LCD_ON/OFF HCLK HCLK LCD_ON/OFF LCD_ON/OFF HFSn HFSn HFSn GPIO10...
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Page 32: Input Connector
INPUT CONNECTOR VGA_5V DAN202U Pins 6/7/8 are R/G/B VGA_5V VGA INPUT return lines resp. CONNECTOR 100/6 HFSn 4 C106 R100 100/6 HCLK 4 Updated in 4/16 0.1u/6 22/6 C107 0.01u/6 RED+ 4 56/6 C108 0.01u/6 RED- 4 22/6 C109 0.01u/6 GREEN+ 4 VGA_SDA 100/6... -
Page 33: Main Board
RMDATA0 RMDATA4 ROM_DATA4 RMADDR6 RMDATA3 ROM_DATA3 RESERVED RMADDR5 RMDATA2 ROM_DATA2 RESERVED RMADDR4 RMDATA1 ROM_DATA1 RMADDR3 RMDATA0 ROM_DATA0 RMADDR2 VBUFC RMADDR1 ROM_OEn RMADDR0 GPIO13/NVRAM_SCL 10K/6 0.1u/6 GPIO12/NVRAM_SDA AT24C16-10SC-1.8 ROM_OEn gm2121 32-Pin PLCC Socket ViewSonic Corporation VG700b-2 Confidential – Do Not Copy... - Page 34 22/6 470/6 22/6 470/6 22/6 Mute_F 22/6 LED_GRN 5.6K/6 4401-11-11P-R MMST3906 LED_ORANGE 5.6K/6 MMST3906 4.7K/6/NS PBIAS Volume_Adj 10K/6 47K/6 4.7K/6/NS CX000800000/1206 2N7002 Volume_Adj VOLU 330u/16V 0.1u/6 10K/6 10K/6 2N7002 4606-06-06P-R PWM0 1u/8 ViewSonic Corporation VG700b-2 Confidential – Do Not Copy...
- Page 35 Panel_Power LCDVCC C102 47K/6 1u/8 CX000800000/1206 0/6/NS SI2301DS 4.7K/6 10K/6 PPWR MMBT3904L +12V1 POWER 1SS355 1u/8 BOOST 1 2 V 12V1 12V2 BOOST +12V 0/1206 FUSE1 47/6 +12V INPUT 330K/6 CX000800000/1206 0.1u/6 4A125-SLOW R6H6-3Ts 1SS355 AIC1563 120p/6 240K/6 1% MMST3906 3K/6 1% 1K/6 1% +5V1...
- Page 36 Audio +12V_amp CX000800000/1206 SPKRO- SPKRO+ +12V_amp CX000800000/1206 +12V_amp left_in 100K/6 right_in 100K/6 ZD005D100 CX000800000/1206 AGND C24 0.01u/6 C25 0.01u/6 AGND AGND AGND AGND AGND AGND 1u/8 VCLAMPR 1u/8 RINN MODE_OUT AGND 1u/8 +12V_amp RINP MODE AGND 1u/8 V2P5 AVCC AGND 1u/8 LINP VAROUTR...
- Page 37 I/O INTERFACE 4401-11-11P-R POWER HDK632A SELSE HDK632A RIGH HDK632A orange HDK632A DOWN LED1 EL-209-2EGW HDK632A green LEFT HDK632A MENU HDK632A HDK632A MTH276D126 MTH276D126...
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Page 39: Exploded Diagram And Spare Parts List
*Reader’s Response* Dear Readers: Thank you in advance for your feedback on our Service Manual,which allows continuous improvement of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic Corporation Assessment A.What do you think about the content after reading VG700b-2 Service Manual?
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