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ViewSonic VG910S Service Manual

ViewSonic VG910S - 19" LCD Monitor Manual

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ViewSonic VG910S | Service Manual - Page 1
Service Manual ViewSonic VG910s/b-1 Model No. VLCDS27944-3W/-4W 19" Color TFT LCD Display (VG910s/b_SM_721 Rev. 1a Mar. 2004) ViewSonic“ 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
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, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of ViewSonic Corporation. Disclaimer ViewSonic makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranty of
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Description 19 5. Adjusting Procedure 20 6. Trouble Shooting Flow Chart 23 7. Recommended Spare Parts List 29 8. Exploded Diagram And Spare Parts List 47 9. Block Diagram 51 10. Schematic Diagrams 52 11. PCB Layout Diagrams 62 ViewSonic Corporation Confidential - Do Not Copy VG910s
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user manual for this product. • Read all of these instructions. • Save these instructions for later use. • Follow all warnings and instructions marked on the product. • Do not use this product near water. • This display is provided. ViewSonic Corporation Confidential - Do Not Copy VG910s/b 1
ViewSonic VG910S | Service Manual - Page 5
Specification 2.1 General Description LCD Fujitsu FLC48SXC11V AU M190EN02V2 Active matrix thin-film-transistor (TFT) Type No: FLC48SXC11V/M190EN02V2 Active screen Size 19.0 inches diagonal Effective Display Resolution Active Display Area Power Supply Voltage Rating AC Power cable User Guide CD
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) for 120 VAC Less than 100 Amp(peak) for 220 VAC Power cord detachable, 3P, 1.8m 2.2.2 LCD LCD Active screen size Pixel Format Display method Pixel pitch Dot number Backlight Brightness Contrast ratio Display color viewing angle typical Response time Active matrix thin-film-transistor (TFT
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/m2 2.3.3.4 5000 K HIGH LUMINANCE ALIGNMENT 2.3.3.4.1 APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN. 2.3.3.4.2 ADJUST R, G, B SUB-CONTRAST TO MEET FOLLOWING CHROMATICITY SPEC. 5000 K x = 0.346 0.003, y = 0.359 0.003 , Y > 180cd/m2 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 4
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BRIGHTNESS = 100%, CONTRAST = 70%. 1. THE LUMINANCE MEASURE SHOULD BE OVER 155cd/m2 2.3.4.2 SET COLOR Temperature TO 6500 K APPLY VESA 1280x1024 / 60Hz , APPLY FULL WHITE PATTERN, ADJUST /m2 OVER190 cd/m2 OVER 180 cd/m2 OVER 180 cd/m2 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 5
ViewSonic VG910S | Service Manual - Page 9
2.4 Key function define Key "Vol -" Key "Vol +" Key "1" Key "DOWN " Key "UP" Key "2" power functions Factory mode Burn in off Burn in on All mode recall Lock(Unlock) Power Key Lock(Unlock) Osd Key Read EDID ViewSonic Corporation Confidential - Do Not Copy VG910s/b 6
ViewSonic VG910S | Service Manual - Page 10
2.5 EDID SERIAL NO. FORMAT 2.5.1 EDID for VG910s 2.5.1.1 Analog EDID 128 BYTES OF EDID CODE: 0 1 2 3 4 5 6 7 8 9 0 00 FF FF FF FF FF FF 00 5A 63 10 18 DA 01 01 01 20 00 00 110 00 FC 00 56 47 39 31 30 73 0A 120 20 20 20 20 20 20 00 D0 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 7
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2.5.2 EDID for VG910b 2.5.2.1 Analog EDID 128 BYTES OF EDID CODE: 0 1 2 3 4 5 6 7 8 9 0 00 FF FF FF FF FF FF 00 5A 63 10 18 DB 01 01 01 01 01 20 20 20 00 00 110 00 FC 00 56 47 39 31 30 62 0A 120 20 20 20 20 20 20 00 DF ViewSonic Corporation Confidential - Do Not Copy VG910s/b 8
ViewSonic VG910S | Service Manual - Page 12
porch V-sync V-back porch Count num (V-total) V-front porch H-sync. Polarity V-sync Polarity H-resolution (dots) V-resolution (lines) 8 IBM-8514 Symbol A 35.156 56.250 36.000 Ths 72 Thb 128 6 29 806 3 Negative Negative 1024 768 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 9
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V-front porch Tvf H-sync. Polarity V-sync Polarity H-resolution (dots) V-resolution (lines) 15 XGA 56.476 70.069 75 48 3 36 808 1 Positive Positive 1024 768 19 SXGA 63.981 60.02 108 112 248 1688 Because this model no support FRC and in order to meet the panel spec of vertical frequency, some
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porch V-sync V-back porch Count num (V-total) V-front porch H-sync. Polarity V-sync Polarity H-resolution (dots) V-resolution (lines) 8 9 Symbo IBM-8514A SVGA l 35.156 37.879 56.250 60.317 36 6 29 806 3 Negative Negative 1024 768 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 11
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H-resolution (dots) V-resolution ( support FRC and in order to meet the panel spec of vertical frequency, some timing can not full screen in vertical size. Ex:640x400/70Hz;640x350/70Hz ;720x400/70Hz ;640x480/85Hz;800x600/85Hz; 1024x768/85Hz. ViewSonic Corporation Confidential - Do Not Copy VG910s
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. Displays the control screen for the highlighted control. Also toggles between two controls on some screens. Also a shortcut to toggle between analog and digital connections. Power light Green = ON Orange = Power Saving Power On/Off ViewSonic Corporation Confidential - Do Not Copy VG910s/b 13
ViewSonic VG910S | Service Manual - Page 17
signal 1280 x 1024 @ 60 Hz to the LCD display. (Look for instructions on "changing the refresh rate" in your graphic card's user guide.) • If necessary, make small adjustments using H the illuminated "active area" of the LCD display.) ViewSonic Corporation Confidential - Do Not Copy VG910s/b 14
ViewSonic VG910S | Service Manual - Page 18
Auto Image Adjust works with most common video cards. If this function does not work on your LCD display, then lower the video refresh rate to 60 Hz and set the resolution to its pre-set value. Contrast adjusts the difference between the image background (black level) and the foreground (white level
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support being included in many of the latest applications. Enabling this setting allows the LCD display to more accurately display Main Menu when the product is set to a Preset Timing Mode, colors return to the 6500K factory preset. ViewSonic Corporation Confidential - Do Not Copy VG910s/b 16
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See your graphic card's user guide for instructions on changing the resolution and refresh rate (vertical frequency). NOTE: VESA 1280 x 1024 @ 60 Hz (recommended) means that the resolution is 1280 x 1024 and the refresh rate is 60 Hertz. Manual Image Adjust displays the Manual Image Adjust menu. The
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. 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. Exception: This control does not affect changes made with the User Color control. ViewSonic Corporation Confidential - Do Not Copy VG910s/b 18
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a 64K-byte internal program Flash-ROM. The MCU controls the keyboard signal and audio signal. 4.4 Scalar The MST9131A is a high performance, and fully intergrated graphics processing IC solution for LCD monitors with resolutions up to SXGA. It is configured with an integrated triple-ADC/PLL, a high
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The monitor is not required to meet specs during the following but must tolerate, without damage to the LCD or circuits, any sequence or combination of power on and off, signal on and off, erratic, wrong frequency or noisy inputs while at any possible unplugging of power or signal, settings of user
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"9300K" , "6500K" "5400K" , "5000K" Push Exit adjust OSD Input D-SUB Push "1 + DC power" 3 second Select "Color Adjust" to adjust "9300K" , "6500K" "5400K" , "5000K" Push "1" Exit adjust OSD Push "2" + DC power to close factory mode ViewSonic Corporation Confidential - Do Not Copy VG910s/b 21
ViewSonic VG910S | Service Manual - Page 25
alignment. 5.2.1.1 Preset condition. 5.2.1.1.1 Setting the contrast to 70%, brightness to 100IRE. 5.2.1.4.2 Adjust R, G, and B sub-brightness to meet following chromaticity spec: 5400K → x = 0.335 ± 0.005, y = 0.350 ± can saturation. ViewSonic Corporation Confidential - Do Not Copy VG910s/b 22
ViewSonic VG910S | Service Manual - Page 26
failure. 2. Disconnected between CN251 and power board. No Failure point FB251, FB251, F251 failure Yes Check that C255 positive is at 5V. No Failure point P251, IC251, L251 failure Yes Check: 1. C262 is O/P 2.5V. 2. IC253 is O/P 3.3V. ViewSonic Corporation Confidential - Do Not Copy VG910s/b 23
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at 5V Yes Check CN302 pin8 is 12V, pin3 is 5V No IC251 failure Check that the voltage level of CN251 is approximately 12V No Power board failure Yes Inverter failure No 1. Check Q309, Q310 pin. 2. Check FB315, FB316 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 24
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6.3 No display on screen (LED is green). Is the backlight lit? Yes Check that the cable is fully connected to CN401 is 5V Check C255 is O/P 5V. No IC251. D251 failure Yes Inverter failure No 1. Check Q309, Q310. 2. Check FB315, FB316 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 25
ViewSonic VG910S | Service Manual - Page 29
between the interface board and key board Yes Failure point 1. D305, D306 ~ D311, D312 failure. 2. TACT switch failure. No Failure point The cable is disconnected. ViewSonic Corporation Confidential - Do Not Copy VG910s/b 26
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6.6 Figure of Waveform ViewSonic Corporation Confidential - Do Not Copy VG910s/b 27
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Spare Parts List VG910b Recommended Spare Parts List Item ViewSonic P/N M-SCW-0824-0777 18 M-SCW-0824-0778 19 M-SCW-0824-0007 20 M-SCW-0824-0413 POWER CORD L1800 BLACK EURO HEADER NYLON66 94V-0 3P P3.96 CABLE AUDIO 36 BLK INSULATOR PC T.4 204*40 VG910 HSK PLATE AL1100F PICKLING T1 CABINET
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CABINET BACK 3% SPARE PARTS FOR PACKING POWER CORD+AUDIO CABLE+D-SUB 3% FOR SPARE PARTS PUT IN MANUAL PACKING ASSY PUT IN CARTON CN201,POWER TO I/F I/F TO SPEAKER I/F TO K/B Q'ty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 30
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VG910s Recommended Spare Parts List Item ViewSonic P/N Ref. P/N Description 1 A-PC-0106-0193 3070000501 AC POWER CORD L1800 BLACK EURO 2 M-MS-0808-9140 3070168334 HEADER NYLON66 94V-0 3P P3.96 3 A-AU-0120-0033 3080005100 CABLE AUDIO BRACKET PANEL SECC 406.3*332.3*19.8 T.8 66 M-MS-0808-
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12P SPEAKER ASSY L18FMR05AAB LCD 19" TFT PANEL SXGA LCD I/F BD ASSY L19BMR 05AAB LCD INVERTER BD ASSY L19BMR 05AAB LCD POWER BD ASSY L19BMR 05AAB LCD FUN KEY BD ASSY L19BMR 05AAB Location 3% SPARE PARTS FOR PACKING POWER CORD+AUDIO CABLE+D-SUB 3% FOR SPARE PARTS PUT IN MANUAL PACKING ASSY PUT IN
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SCW-0824-0779 3109017700 19 M-SCW-0824-0779 VG910 CABINET BACK ABS MIDNIGHT GRAY S9LRC1LS R/C ASSY L19BMW05BBB S9LRC1LS NAME PLATE VIEWSONIC ABS94HB MIDNIGHT GR R/C ABS MIDNIGHT GRAY VG910B TOP ANG LE OF F/B STICK ON PANEL BKT POWER BD AR EA R&L SID AUDIO WIRE+PANE L BKT CABINET BACK PANEL+FFC CABLE
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WIRE PANEL BKT+LVDS CABLE CABINET BACK CABINET BACK 3% SPARE PARTS FOR PACKING POWER CORD+AUDIO CABLE+D-SUB AIR SHIPPING BY AIR SHIPPING BY SEA BY SEA FOR 32 SETS/PALLET 3% FOR SPARE PARTS BY AIR SHIPPING FOR 16SETS/PALLET BY SEA PUT IN MANUAL PACKING ASSY PUT IN CARTON I/F TO SPEAKER I/F TO K/B FOR
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VG910b BOM LIST Item ViewSonic P/N Ref. P/N 116 #N/A 131 E-R-0405-7049 343100300 Description PWB S0 CEM-1 175*43 (INVERTER BD) LCD POWER BD ASSY L19BMR 05AAB PWB S0 CEM-1 125*60 (PWR BD) SCREW M 1 C829,C831 2 C257 1 C614 1 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 35
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VG910b BOM LIST Item ViewSonic P/N 166 E-C-0404-4875 167 E-C-0404-4875 8051 UP WITH ISP PLCC-44P IC 4-CH AUDIO PROCESSOR SO-28P IC 2*6 STEREO CARD RADIO 9P IC SXGA LCD CTL PQFP-128P IC CMOS 2K EEPROM SOIC-8P R06 1 R118 1 R08 1 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 36
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VG910b BOM LIST Item ViewSonic P/N 214 #N/A 215 #N/A 216 #N/A 217 #N/A 218 #N/A 219 #N/A 220 #N/A 221 #N/A 222 #N/A 223 E-R-0405-6685 224 E-R- 3 IC02,IC03,IC04,IC05 4 IC01 1 T01,T02 2 CN01 1 R112 1 R101 1 R103 1 R108 1 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 37
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VG910b BOM LIST Item ViewSonic P/N 272 #N/A 273 #N/A 274 #N/A 275 #N/A 276 #N/A 277 #N/A 278 #N/A 279 #N/A 280 #N/A 281 #N/A 282 #N/A 283 #N/A 284 #N/A 285 #N/A ,J6,J7,J19,J2 5 S901,S902,S903,S904,S905,S906,S907 ,S908 8 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 38
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VG910b BOM LIST Item ViewSonic P/N 332 #N/A 333 M-WR-0828-0224 334 #N/A 335 #N/A 336 #N/A 337 #N/A 338 M-MS-0808-9140 CN901 1 J1~J8 8 D901 1 CND901,902(ESD SOLUTION) 2 HS201 1 HS102 1 CN101 1 CN201 1 IC803 1 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 39
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18 M-SCW-0824-0779 19 M-SCW-0824-0779 20 VIEWSONIC 82.83*34.9 R/C ABS 41 VG910S S9LRC1LS F/B ASSY L19BMR05AAB S9LFC1LS FUNCTION KEY ABS CR S8LFC1LS Location PANEL TO I/F I/V+PANEL BKT,POWER BD+Panel BKT AC SOCKET GND CONN. D-SUB, DVI-D STAND BKT & SHIELD CAN I/F TOP AUDIO WIRE+PANEL BKT STICK ON TOP
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WIRE PANEL BKT+LVDS CABLE CABINET BACK CABINET BACK 3% SPARE PARTS FOR PACKING POWER CORD+AUDIO CABLE+D-SUB AIR SHIPPING BY AIR SHIPPING BY SEA BY SEA FOR 32 SETS/PALLET 3% FOR SPARE PARTS BY AIR SHIPPING FOR 16SETS/PALLET BY SEA PUT IN MANUAL PACKING ASSY PUT IN CARTON I/F TO SPEAKER I/F TO K/B FOR
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PAD SILICONE 20*14 T2 WIRE WITH HOUSING 1007 #26 L120 7P LCD INVERTER BD ASSY L19BMR 05AAB PWB S0 CEM-1 175*43 (INVERTER BD) LCD POWER BD ASSY L19BMR 05AAB PWB S0 CEM-1 125*60 (PWR BD C832,C835,C837 4 C259 1 C256 1 C609,C610,C611 3 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 42
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ISP PLCC-44P 2530085011 IC 4-CH AUDIO PROCESSOR SO-28P 2530100016 IC 2*6 STEREO CARD RADIO 9P 2530222052 IC SXGA LCD CTL PQFP-128P 2610049742 IC CMOS 1 IC601,IC602 2 IC302 1 IC302 1 IC302 1 IC302 1 L252 1 L251 1 FB301 1 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 43
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VG910s BOM LIST Item ViewSonic P/N Ref. P/N Description 210 #N/A 2921093612 BEAD CH 100MHZ 120 OHM 0.2A 0603 211 E-R-0405-2330 212 E-R-0405-5916 213 ,D19 3 D07,D08,D19 1 Q01 1 Q06,Q07 2 Q06,Q07 2 Q02 1 Q03,Q04,Q05 3 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 44
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D104 D103 IC102 IC102 IC102 IC102 Q101 IC201 IC201 IC201 IC101 T101 FL101 FL102 J1 D901 CN301 CN251 CN804 CN802 Q'ty 3 4 1 2 1 1 1 1 1 5 1 1 1 4 1 1 1 1 1 1 1 2 2 1 2 2 1 1 1 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 45
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VG910s BOM LIST Item ViewSonic P/N 322 #N/A 323 #N/A 324 #N/A 325 #N/A 326 #N/A 327 M-WR-0828-0224 328 M-WR-0828-0249 329 D901 CND901,902(ESD SOLUTION) HS201 HS102 CN101 CN201 IC803 Q'ty 1 1 1 1 4 6 2 2 5 8 1 8 1 2 1 1 1 1 1 ViewSonic Corporation Confidential - Do Not Copy VG910s/b 46
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Description Q'TY F/B ABS SILVER VG910S S9LFC1LS 1 FUNCTION KEY ABS CR S8LFC1LS 1 LCD FUN KEY BD ASSY L19BMR 05AAB 1 SPEAKER ASSY L18FMR05AAB 2 LCD 19" TFT PANEL LVDS SXGA (TCO03) 1 BRACKET PANEL SECC 406.3*332.3*19.8 T.8 1 LCD POWER BD ASSY L19BMR 05AAB 1 LCD I/F BD ASSY L19BMR
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15 DDC EEPROM VGA-SDA VGA-SCL POWER +12V BOARD IC251 +5V IC253 D252 D253 Analog I/P IC401 DISPLAY ENGINE MST9131 ADC+DVI+SCALER CN401 LVDS Audio IC802 Audio Process IC803 Audio AMP Audio Portion SPK L SPK R PANEL INVERTER BOARD ViewSonic Corporation Confidential - Do Not Copy VG910s
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10. Schematic Diagrams ViewSonic Corporation Confidential - Do Not Copy VG910s/b 52
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11. PCB Layout Diagrams Main Board ViewSonic Corporation Confidential - Do Not Copy VG910s/b 62
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Main Board ViewSonic Corporation Confidential - Do Not Copy VG910s/b 63
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Power Board ViewSonic Corporation Confidential - Do Not Copy VG910s/b 64
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Control Board ViewSonic Corporation Confidential - Do Not Copy VG910s/b 65
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content after reading VG910s/b Service Manual? Unit 1. Precautions And Safety Notices 2. Specification Excellent Good Fair Bad 3. Front Panel Function Control Description 4. Circuit Description 5. Adjusting Procedure 6. Trouble Shooting Flow Chart 7. Recommended Spare Parts List 8. Exploded