Monitor Service Manual

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P6NS SERIES

Service Manual

PROVIEW ELECTRONICS CO.,LTD

6F,No.1,Pau-Sheng Road,Yung-Ho City,Taipei 234,Taiwan

Summary of content (46 pages)

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P6NS SERIES Service Manual PROVIEW ELECTRONICS CO.,LTD 6F,No.
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Tel : (886-2) 2231-6789 , Fax :(886-2) 2231-5678 TABLE OF CONTENTS SERVICE WARNING·····································1 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 · · · · · · · · · · · · · · · · · · · · · 1 B. S P E C I F I C A T I O N S · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 2 C. T I M I N G C H A R T · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 5 D.
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WARNING To prevent from fire or shock hazard,do not expose 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 PROVIEW branch office if you need help. A. IMPORTANT SAFETY INSTRUCTION Prior to using this service manual,please ensure that you have carefully followed all the procedures outlined in the user's manual for this product. 1.
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For Model 786NS,986NS Series WARNING : This product included critical components which are essential for X-Radiation safety. See service manual for proper replacement.Maximum 2nd anode voltage must not exceed 30KV at any operating conditions. To measure 2nd voltage use high impedance meter connect (-) chassis, use a high voltage lead from (+) to 2nd anode. For Model 572NS Series WARNING : This product included critical components which are essential for X-Radiation safety.
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B. SPECIFICATIONS 562NS,572NS Series 1. 2. 3. 4. 5. 6. 7. 8. Screen Visible Image Area Active Display Area Synchronization Range Horizontal Vertical Power Source Power Consumption Input Signal Video Sync. Connection Type 9. Resolution 10. Color Temperature 11. Dimension (W×H×D) 15 F&S 0.28mm,Antistatic coating 13.70 inches 260 mm (H) × 190mm (V) 30 – 70 KHz ----- (572NS Series) 30 – 55 KHz ----- (562NS Series) 50 – 160 Hz 100 – 240 Vac , 60/50 Hz 70W (max.) Analog R.G.B. , 0.
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17” F&S 0.27mm,Antistatic coating (772NS) 17” F&S 0.25mm,Antistatic coating (786NS) 17” Pure flat screen,0.25mm,Antistatic coating(777NS,787NS) 15.7 inch ----- (772NS,786NS Series) 16.02 inch ----- (777NS,787NS Series) 310mm (H) × 230mm (V) 1. Screen 2. Visible Image Area 3. Active Display Area 4. Synchronization Range Horizontal 30 – 70 KHz ----- (772NS,777NS Series) 30 – 86 KHz ----- (786NS,986NS Series) 50 – 160 Hz 100 – 240 Vac , 60/50 Hz 75W (max.) ----- (772NS Series) 100W (max.
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1. 2. 3. 4. Screen Visible Image Area Active Display Area Synchronization Range Horizontal Vertical 5. Power Source 6. Power Consumption 7. Input Signal Video Sync. 8. Connection Type 9. Resolution 10. Color Temperature 11. Dimension (W×H×D) 19” F&S 0.25mm,Antistatic coating 17.9 inch 360mm (H) × 270mm (V) 30 – 86 KHz 50 – 160 Hz 100 – 240 Vac , 60/50 Hz 110W (max.) Analog R.G.B. , 0.
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C. TIMING CHART A : Period B : Active C : Sync Width D : Back Porch E : Front porch Video D B E Sync. C A Preset Modes Dot Rate (MHz) F.H (KHz) A- Period (uS) B- Active (uS) C- Sync (uS) D-Back Porch (uS) E-Front Porch (uS) F.
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D. CONTROL LOCATION Font control panel One key type Four key type a. Power Switch b. Power Indicator c.Encoder d. Enhance Key a. Power Switch b. Power Indicator c. Exit d. ＋Adjust e. －Adjust f.
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E.
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F. ADJUSTMENT PROCEDURE ITEM Program Menu. B+ Adjust A ﹟Test Meter ﹡Test Point ﹫Pattern ﹟Digital Voltmeter ﹡D510 Negative ﹫Crosshatch Pattern (31.5KHz,640x480) Operation 1. Make the adjustment to the value shown at right by turning the VR501 on the main PCB. High Voltage ﹟Digital Voltmeter 1. Turn the power switch of the monitor OFF. Adjust 2. Connect high voltage probe to Anode Cap and ﹟High Voltage GND. Probe 3. Turn the power switch of the monitor ON.
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ITEM Program Menu. ﹟Test Meter ﹡Test Point ﹫Pattern C Background ﹟Color Analyzer White ﹫R.G.B off Balance (68KHz,1024x768) D Adjust E F G Adjusting Value Four key model : Other adj. : Step 1 : Press and relese the OSD control knob to Best Point activate the OSD menu. Step 2 : Press +/▲or -/▼key to highlight the desired option of OSD icon. Step 3 : Press and release MENU key to acress the option.The color of the inner area of the OSD will changed from blue to green.
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ITEM Program Menu. Dynamic Focus H Adjust Purity Adjust I ﹟Test Meter ﹡Test Point ﹫Pattern ﹟Oscilloscope ﹡FBT Pin14 ﹫Full White (31.5KHz,640x480) 1. Set the contrast to MAX.,and adjustment Brightness to the raster just appear. 2. Make the adjustment to the value shown at right by adjust the VF on the OSD menu. 3. Make the check to the value shown at right by adjust the HF on the OSD menu. ﹫Magenta color (31.5KHz,640x480) 1. Adjust the purity magnet is in magneta color. 2.
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G.
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H. TROUBLE SHOOTING HINTS BRIGHT HOR. LINE APPEAR ON THE SCREEN NO POWER T501(7) VOLTAGE No T501 (7) No 160 V ? AC120V IN AC220V IN AC230V IN CHECK F501,D514 , D515,D516, D517 Yes IC501 (7) No CHECK IC501,R539, D505,ZD551 No CHECK ＞ 14 V ? Yes IC501(6) 14Vp-p ? IC501,Q504 Yes D510 (-) 15.
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IC301 (2) No 12 V ? CHECK 15V LINE Yes No IC301 (4) CHECK -12V -12 V ? Yes LINE No IC301 (1) CHECK IC601 0.
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NO RASTER No CRT G1 -20V~ -80V ? No No Q710 (E) IC901(4) Yes No HEATER VOLT 6.3 V ? Yes IC901 Surrounding CKT -1.5V~-1.8V -0.6V ? Yes CHECK No CHECK CHECK B+ VOLT 7.2 V ? Q711(B) < 0.7 V Yes ? CHECK IC901(24) > 2.
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DEFLECTIVE HOR. CKT Yes Q703 (C) 1.0 ~ 1.2 KVP-P? No o CHECK NO RASTER Yes No Q703 (B) Q703 DRIVE No PULSE FAILURE Yes T701 (3) CHECK B+ ? No Yes FBT No Q702 (G) REPLACE DRIVE PULSE No Q703 Yes CHECK CHECK B+ 51V Yes B+ 51V No CHECK IC601 No Yes CHECK Q719,(G) CHECK Yes B+ = 15V? DRIVE No PULSE? Q719 No CHECK CHECK 15V LINE T702 Q601, Q602 (B) BOUT Yes 986N:T701(3) Voltage for each mode Fh T701(3) B+ 31.
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OFF MODE NO ROTATION FAILURE VESA STANDARD DPMS ITEM H/V Sync. VIDEO LED GREEN NORMAL ON/ON NORMAL ON STAND BY OFF/ON OFF FLICKER SUSPEND ON/OFF OFF FLICKER OFF OFF/OFF OFF FLICKER Yes IC901(40) (41) H/V SIGNAL ? No CHECK PC MODE No IC901(20) CHECK PS 0 0 V ?Yes IC901 No Q505 (C) IC901 PIN40,PIN41 SIGNAL. CHECK PIN40 PIN41 NORMAL H H STAND BY H L SUSPEND H L OFF L L Q505 7.
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No P903 CHECK OK ?Yes Rotation Coil No Q902 (c) CHECK 15 V ?Yes 15V LINE No R979 CHECK 7 V ?Yes 7V LINE No Q902 (B) Q903 (B) 1.5~13VYes ? CHECK Q902 Q903 No Q904 (B) 0~2.
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NO OSD CHARACTERS DOES NOT MISSING WORKONE Example:Missing Green COLOR No CRT KG Yes 80V0-P? NO RASTER No IC203 (3) CHECK Yes 39 VP-P ? IC203 No IC203 (8) Yes 12 V ? CHECK No IC201 Yes (10) 5V ? 12V CHECK IC201 No IC201 (7) Yes 0.7VP-P ? CHECK I/P SIGNAL No IC201 Yes (19) 0.
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Example : Missing Green Condition : OSD on Yes IC201 (19) Yes IC201(24) No 7V ? OSD G No 5V0-P? CHECK IC201 Yes IC202 (3) CHECK M703 BLK ? No 5 V0-P ? Yes IC202(6) No 4.2VP-P ? CHECK 80V ? CHECK D203 I.
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986NS/787NS/786NS/777NS/772NS/572NS/562NS Spare Parts List Location.
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(786NS) (777NS,572NS,562NS) 210-823-0456 210-753-0456 R303 210-123-0456 R666 (986NS) (787NS,786NS,772NS) (572NS,562NS) 210-123-0856 210-223-0856 210-103-0856 R768 (986NS,787NS,786NS 772NS) (572NS,562NS) 210-133-0856 210-822-0856 R761 (986NS) (787NS,772NS) 210-152-0456 210-272-0456 R602 210-153-0456 68KΩ 82 KΩ 75 KΩ 12KΩ 12KΩ 22KΩ 10KΩ 13KΩ 8.2KΩ 1.5KΩ 2.7KΩ 15KΩ R608 210-153-0856 15KΩ 1/8W 1 R515,589 210-154-0856 150KΩ 1/8W 2 R614 210-182-0856 1.
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R979 210-330-0456 33Ω 1/4W 1 R7A6 R674 (777NS,772NS) (572NS,562NS) R601,665 210-331-0856 210-331-0856 Open 210-332-0856 1/8W 1/8W 1 R604 (986NS,787NS,786NS,772NS) (572NS,562NS) R707 (986NS,787NS,786NS) (772NS) R603 210-332-0856 210-103-0856 210-332-0856 Open 210-333-0456 330Ω 330Ω Open 3.3KΩ 3.3KΩ 10KΩ 3.
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R501 R7B4 (986NS,787NS,786NS) (772NS) R206,236,266,2A2 210-474-0256 Open 210-474-0856 210-510-0256 470K Open 470K 51Ω 1/2W R739,760 210-512-0856 5.1KΩ 1/8W 2 R2A6 210-513-0856 51KΩ 1/8W 1 R905 210-561-0456 560Ω 1/4W 1 R920 210-561-0856 560Ω 1/8W 1 R334 210-562-0456 5.6KΩ 1/4W 1 R290.292.294.295 210-562-0856 210-562-0856 210-332-0856 R668 210-563-0456 1/8W 1/8W 1/8W 1/4W 4 R604 (986NS,787NS,786NS) (772NS) 5.6KΩ 5.6KΩ 3.
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4.7KΩ 7Ω 8Ω 9Ω 15Ω 27Ω 30Ω 150Ω 330Ω 2.2Ω R-NW NTC NTC PTC R-MNF 2W R-MNF 2W R-MNF 2W R-MNF 2W R-MNF 2W R-MNF 1W R-MNF R-MNF R-MNF R-MNF R-MNF R-MNF 3W 3W 3W 3W 3W 2W 1 220-4R7-2059 2.7Ω 0.33Ω 0.47Ω 0.39Ω 0.30Ω 4.7Ω R528 220-561-1059 560Ω R-MNF 1W 1 R503 R705 (986NS,787NS,786NS) (772NS) 220-753-3059 220-8R2-2059 Open 1 R609 (986NS,787NS,786NS) (772NS) (572NS,562NS) 221-081-1152 221-081-1052 221-081-1102 R749 221-081-2400 75KΩ R-MNF 3W 8.2Ω R-MNF 2W Open 11.5KΩ 1% 1/8W 10.
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R781 (986NS,787NS,786NS) (772NS) R780 (986NS,787NS,786NS) (772NS) R794 (986NS,787NS,786NS) (772NS) R701,702 (986NS,787NS,786NS772NS) (572NS,562NS) R661 (772NS) (572NS,562NS) R662 (772NS) (572NS,562NS) Open Short Short Open Open 210-823-0856 Open Short Short 210-100-0856 Open 210-363-0856 Open Short Short Open Open 82KΩ Open Short Open 10Ω Open 36KΩ C935,948 300-1R0-5020 1.0u 50V E.
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C744 300-470-0120 47u 100V E.C 1 C501,519,305 300-471-2520 470u 25V E.C 3 C701 300-6R8-5020 6.8u 50V E.C 1 R545 300-680-3520 68u 35V E.C 1 C609 305-103-0550 0.01u 50V PE 1 C292,626,627,628,629,905,906,914 C915,916,917 307-101-1170 100p 50V C.C 11 C518,618A,771,740A 307-102-1160 1000p 50V C.C 4 C2A2 307-102-3570 1000p 500V C.C 1 C602,778,779 307-103-1170 0.01u 50V C.
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(772NS,572NS) 309-472-1552 4700p 1.5KV PHM C620,790 C710 (986NS,786NS) (787NS) (772NS) (572NS) (562NS) C716 C717 (986NS,786NS,772NS) (787NS,777NS) (572NS,562NS) C709 (986NS,786NS) (787NS) (777NS,772NS) (572NS) (562NS) C731 (986NS,787NS) (786NS) (772NS) C508,524 310-104-0252 310-154-0252 310-823-0252 310-824-0252 310-684-0252 310-394-0252 310-225-0252-H 310-274-0452 310-224-0452 310-334-0452 310-394-0252-1 310-274-0252 310-224-0252 310-184-0252 Open 310-824-0452 310-105-0252 Open 315-224-2572 0.
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C 908,909,920,921,902A,902B,724 C702,730 (986NS,787NS,786NS) (772NS) SW902,903 328-104-2690 Open 401-170-D200 0.
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(562NS) Open Open 510-023-0945-P 2SC945P 1 510-010-0772 510-010-0772 Open 510-300-SA44 Open 511-001-2141 Q504 511-001-2746 Q504 Heat Sink(986NS,787NS,786NS) 120-001-P6SE-E (772NS) 120-001-772I-E Q717 510-250-0122 HSB772 (TO – 126 ) HSB772 (TO – 126 ) Open HMPSA44 Open 2SK2141 2SK2746 (For PFC) 1 Q504 Heat Sink 1 TIF122 1 Silicon Rubber 540-100-2001 For Q717,Q719,D719 1 Shoulder Washers Q703 (986NS,787NS,786NS) (772NS) (572NS,562NS) Q703 Heat Sink(986NS,787NS,786NS) (772NS) Q707 (986NS,787NS
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ZD551 521-005-18R0 HZ18V 1 ZD502 521-005-30R0 HZ30V 1 ZD501 521-005-56R0 HZ56V 1 D205.235.
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CRT T703 (986NS,787NS,786NS,772NS) (572NS,562NS) T501 T702 T701 (986NS,787NS,786NS) (772NS) (572NS) (562NS) Degaussing Coil (986NS) (787NS,72NS) (572NS,562NS) Roation Coil (986NS,787NS) (786NS,772NS) (572NS,562NS) 700-119-246P 700-117-25PF-2 700-117-26SS 700-117-2806 700-115-2823 730-400-770VC Open 730-102-P6SE-A 986NS 787NS 786NS 772NS 562NS 1 Focus choke 1 Power Converter 1 H-Driver 1 FBT 1 L230,201,231,261 L705 (772NS)) (572NS) (562NS) L703 (986NS,787NS,786NS) (772NS) L704 730-200-770VC 730-
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J.
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MAIN BOARD (Soild Side) 43
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K.
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