Summary of XL-795D
Page 1
1 xl795d service manual.
Page 2: Table of Contents
2 table of contents s e r v i c e w a r n i n g ················································· 3 a. I m p o r t a n t s a f e t y i n s t r u c t i o n ····················· 3 b. S p e c i f i c a t i o n s ········································· 4 c. T i m i n g c h a r t ·····················...
Page 3: Warning
3 warning to prevent from fire or shock hazard,do notexpose monitor to any rain or any form of water.High voltage is inside the monitor so please do not remove the back cover of the cabinet if you are not a qualified monitor engineer.Contact the local dealer or the nearest xerox branch office if you...
Page 4: B. Specifications
4 b. Specifications 1. Maximum resolution 1280 x 1024 @ 75hz 2. Recommend resolution 1280 x 1024 @ 60hz 3. Synchronization range horizontal vertical 31 – 80 khz 60– 75 hz 4. Active display area 376mm (h) x 301mm (v) 5. Dot pitch 0.294(h) x 0.294(v) mm 6. Support display colors 16.7m color 7. Contras...
Page 5: C.Timing Chart
5 c.Timing chart video back porch active display front porch sync. Sync-width total preset modes vga 720x400 vga 640x480 vesa 640x480 vesa 640x480 vesa 800x600 vesa 800x600 vesa 800x600 pixel clock (mhz) 28.325 25.175 31.500 31.500 36.000 40.000 50.000 h-frequency (khz) 31.472 31.469 37.861 37.500 3...
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6 preset modes vesa 800x600 vesa 1024x768 vesa 1024x768 vesa 1024x768 vesa 1280x1024 vesa 1280x1024 pixel clock (mhz) 49.500 65.000 75.000 78.750 108.00 135.00 h-frequency (khz) 46.875 48.363 56.476 60.023 63.981 79.976 h-total (µs) 21.333 20.677 17.707 16.660 15.630 12.540 h-active display (µs) 16....
Page 7: D. Control Location
7 d. Control location font control panel 1. Menu button (menu) 4. Auto button (auto) 2. Select button (down) 5. Power button (power) 3. Select button (up) 6. Power indicator rear panel the rear panel of the monitor includes 3 plug-in connectors. They are as follows: 1. One dc in connector 2. Two vga...
Page 8: E. Conduction View
8 e. Conduction view main board (component side).
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9 main board (component side).
Page 11: F. Adjustment Procedure
11 f. Adjustment procedure item program menu. ﹟test meter ﹡test point ﹫pattern operation check value a b+ check ﹟digital voltmeter ﹡cn7 ﹫crosshatch pattern (31.5khz,640x480) 1. Plug power cable into the adapter, check adapter power indicator light up green. 2. Make sure the voltage of the power plug...
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12 g. Trouble shooting hints no no yes yes yes yes no no high voltage ! No yes yes no no yes no display ( black ) led on ? Push the power on/off switch led color change ? Check main board scaler ic hi / lo under push power sw? Back light on? To step 2 make sure the connection of inverter is fine +12...
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13 no yes yes no yes no b hi / lo under push power sw? Change the inverter display ? Ok ! To step 2 a check the connection of control board display ? Ok ! Change the main board change the main board.
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14 no yes no yes yes yes yes no no yes step 2 check the main board 12v ? +5.0 v ? Repair 5v circuit h/v input signal ? Check the main board dpms circuit ? Change scaler ic check h/v signal display ? Ok ! Change signal cable check fuse, adapter repair dpms circuit.
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15 no yes no yes no yes yes no no yes no display (white) check the main board 5v ? +3.3v ? H/v input signal ? Check the main board 3.3v regulator ? Change scaler ic check h/v signal display ? Ok ! Change signal cable repair 5v circuit check 3.3v regulator repair 3.3v circuit.
Page 16: H. Replacement Parts List
16 h. Replacement parts list no parts no. Description part location q’ty 1 988-a05-1000 ga980dl xerox set color : 877c+k2440 1 2 154-500-976d-a 19" 976d protection cover for bezel 1 3 160-52l-980dl ga-980dl polyfoam l 1 4 160-52r-980dl ga-980dl polyfoam r 1 5 170-001-lcd5-1 lcd15" pe bag 1 6 170-005...
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17 no parts no. Description part location q’ty 33 281-031-20014 smd r 2k 1% 0603 r87., 1 34 281-031-62014 smd r 6.2k 0603 r86., 1 35 281-035-0r04 smd r 0 ohm 5% 0603 r154.,r155.,l1.,l2.,l3.,l4.,l5.,l6., l7.,r17.,l19.,r5.,r7.,r36.,r71., r75.,r88.,r55.,r13.,r23., 20 36 281-035-1014 res 100 5% 1/10w 06...
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18 no parts no. Description part location q’ty 65 382-392-032564 smd cc 0.039uf 25v x7r 0603 c22., 1 66 382-393-032564 smd cc 0.047uf 25v x7r 0603 c23., 1 67 382-473-032564 smd cc 0.047uf 25v x7r 0603 c24.,c25.,c27., 3 68 385-104-032584 smd cc 0.1uf 25v y5v 0603 c5.,c193.,c194.,c1.,c4.,c8.,c11.,c14....
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19 no parts no. Description part location q’ty 93 630-030-8001 connector 125hr(df14) 30p1.25 smd cn2., 1 94 745-330-2062-3 33uh c4426-060128yb-ul l27., 1 95 780-103-3000 smd bead sbk160808-300y l13.,l14.,l15.,l16.,l17.,l20., 6 96 780-104-6010 smd bead sbk-201209t-601y-s l199.,l21.,l29.,l30.,l31.,l32...
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20 no parts no. Description part location q’ty 127 101-010-4033-1 screw p4*10 iso 2 128 132-300-ps576 base screw ass’y 1 129 106-012-6033 screw m6 l 12mm 1 130 132-001-ps576-a springe 1 131 631-030-j976 30p 1.25-1.0 130mm 1 132 631-006-7008-a wire 150mm 1 133 126-030-alp4 al foil 200x30mm 2 134 126-...
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28 i. Block diagram.
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29 j. Schematic diagram 200-100-776d-d (pv7-s1) a vga & dvi input proview electronics (taiwan) co., ltd. 6f, no.1, pau-sheng rd., yung-ho city, taipei county, taiwan r.O.C. Tel: 886-2-2231-6789 fax: 886-2-2232-4613 1 6 thursday, september 18, 2003 title size document number rev date: sheet of ve ve ...
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30 200-100-776d-d (pv7-s2) a pw13xa (a/d+scaler) proview electronics (taiwan) co., ltd. 6f, no.1, pau-sheng rd., yung-ho city, taipei county, taiwan r.O.C. Tel: 886-2-2231-6789 fax: 886-2-2232-4613 2 6 thursday, september 18, 2003 title size document number rev date: sheet of v18a v33 3.3vdvi v33 pv...
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31 200-100-776d-d (pv7-s2) a memory & lcd power control proview electronics (taiwan) co., ltd. 6f, no.1, pau-sheng rd., yung-ho city, taipei county, taiwan r.O.C. Tel: 886-2-2231-6789 fax: 886-2-2232-4613 3 6 thursday, september 18, 2003 title size document number rev date: sheet of v33 v33 v33 v33 ...
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32 200-100-776d-c (pv7-s2) a output connector proview electronics (taiwan) co., ltd. 6f, no.1, pau-sheng rd., yung-ho city, taipei county, taiwan r.O.C. Tel: 886-2-2231-6789 fax: 886-2-2232-4613 4 6 thursday, july 31, 2003 title size document number rev date: sheet of gnd gnd gnd gnd vcc v12 gnd gnd...
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33 200-100-776d-d (pv7-s2) a power supply proview electronics (taiwan) co., ltd. 6f, no.1, pau-sheng rd., yung-ho city, taipei county, taiwan r.O.C. Tel: 886-2-2231-6789 fax: 886-2-2232-4613 5 6 thursday, september 18, 2003 title size document number rev date: sheet of v33 3.3vadc v18 vcc vin1 vcc v...
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34 200-100-776d-d (pv7-s2) a audio proview electronics (taiwan) co., ltd. 6f, no.1, pau-sheng rd., yung-ho city, taipei county, taiwan r.O.C. Tel: 886-2-2231-6789 fax: 886-2-2232-4613 6 6 thursday, september 18, 2003 title size document number rev date: sheet of vcc vcc vcc vcc gnd gnd gnd audio gnd...
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36 memu.