A70PF Service Manual A70PF(RX-777NS) 1 / 33
TABLE OF CONTENTS WARNING---------------------------------------------------------------------------------------3 A. IMPORTANT SAFETY INSTRUCTION---------------------------------------3 B. SPECIFICATIONS ----------------------------------------------------------------------4 C. TIMING CHART-------------------------------------------------------------------------5 D. ADJUSTMENT CONTROL LOCATION--------------------------------------6 E.
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 AOpen 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.
B.SPECIFICATIONS 17” F&S 0.25mm,Antistatic coating Screen 16.02 inch Visible Image Area 306mm (H) × 230mm (V) Active Display Area Synchronization Range Horizontal 30 – 72 KHz Vertical 50 – 160 Hz 100 – 240 Vac , 60/50 Hz 5. Power Source 75W (max.) 6. Power Consumption 7. Input Signal Video Analog R.G.B. , 0.7Vp-p / 75 Ohm Sync. TTL level,positive or negative polarity 15 Pin D Type 8. Connection Type 1280 × 1024 pixels 9. Resolution 9300ºK / 6500ºK 10. Color Temperature 406 × 417 × 433 (mm) 11.
C.TIMING CHART A : Period B : Active C : Sync. Width D : Back Porch E : Front Porch C Preset Modes VGA 640 × 480 VGA 720 × 400 Dot Rate (MHz) 25.175 28.322 31.469 31.469 31.778 VESA 640 × 480 31.50 VESA 640 × 480 VESA 800 × 600 VESA 800 × 600 VESA 1024 × 768 SIEMENS 800 × 600 VESA 1280 × 1024 VESA 1024 × 768 36.000 49.50 56.25 78.750 67.5 108.00 94.5 37.500 43.269 46.87 53.674 60.023 63.92 63.98 68.677 31.778 26.667 23.111 21.333 18.631 16.660 15.644 15.630 14.
D.
E. 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.
ITEM Program Menu. ﹟Test Meter ﹡Test Point ﹫Pattern Operation Background ﹟Color Analyzer White ﹫R.G.B off Balance (68KHz,1024x768) D Adjust 1. Set the contrast to MAX.,Brightness to Y=0.7 set color is 9300°K using the OSD. 2. Set the OSD to COLOR of sub menu and press knob. 3. Make the adjustment R.G.B BIAS low light to the value shown at right by using and key. ﹟Color Analyzer ﹟Oscilloscope ﹡Cathode G ﹫3” block (68KHz,1024x768) 1. Move the OSD to the R.G.B. DRIVE. 2.
ITEM Program Menu. Dynamic Focus H Adjust Purity Adjust ﹟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.
A70PF(RX-777NS) 10 / 33
A70PF(RX-777NS) 11 / 33
F.BLOCK DIAGRAM 200-200-P6NS Video Board DY Video AMP IC203 Video PerAmp OSD R,G,B IC201 LM1237 Signal Cable LM2469 DC –restore IC202 LM2480 H,V sync 200-100-P6NS Main Board EEPROM IC901 24LC08 MCU IC901 EMC6700 Control PCB Degauss Power Cord AC100-240V SMPS I501 KA3842 A70PF(RX-777NS) CRT Voltage Regulator D502,D508, D510,D513, D509 H/V Processor IC601 TDA9116/8 80V 55V 15.5V 7.5V -13V H-Driver T702,Q702 V Vertical Booster IC301 TDA8172 Horizontal Def.
G. TROUBLE SHOOTING HINTS T501(7) VOLTAGE NO POWER T501 (7) AC120V IN AC220V IN AC230V IN No 160 V ? 160V 294V 308V CHECK F501,D514 , D515,D516, D517 Yes IC501 (7) No CHECK IC501,R539, D505,ZD551 No CHECK ＞ 14 V ? Yes IC501(2) 2.5V ? IC501,Q504 Yes D510 (-) 15.
BRIGHT HOR. LINE APPEAR ON THE SCREEN IC301 (2) No CHECK 15V LINE 12 V ? Yes IC301 (4) No CHECK -12V LINE -10.5 V ? Yes IC301 (1) No CHECK IC601 0.
NO RASTER CRT G1 -20V~ -80V ? No Q710 (E) IC901(4) No HEATER VOLT 6.3 V ? Yes No CHECK B+ VOLT 7.2 V ? Yes CRT EHT 26KV ? CHECK IC901 Surrounding CKT -1.5V~-1.8V -0.6V ? Yes No CHECK Q711(B) < 0.7 V ? Yes No No CHECK IC901(24) > 2.
DEFLECTIVE HOR. CKT Q703 (C) 1.0 ~ 1.
OFF MODE FAILURE VESA STANDARD DPMS IC901(40) (41) H/V SIGNAL ? Yes CHECK ITEM PC H/V Sync. VIDEO LED NORMAL ON/ON NORMAL GREEN CHECK STAND BY OFF/ON OFF ORANGE IC901 OFF OFF/OFF OFF ORANGE MODE No IC901(20) No PS 0 0V? Yes Q505 (C) No CHECK IC901 PIN40,PIN41 SIGNAL. Q505 PIN40 PIN41 NORMAL H H STAND BY H L OFF L L 7.
NO ROTATION P903 No OK ? CHECK Rotation Coil Yes Q902 (c) No 15 V ? CHECK 15V LINE Yes Q903 (E) No 7V? CHECK 7V LINE Yes Q904 (B) 2.
NO CHARACTERS MISSING ONE Example:Missing Green CRT KG No NO RASTER 80V0-P? Yes IC203 (3) No 39 VP-P ? CHECK IC203 Yes IC203 (8) 12 V ? No CHECK 12V Yes IC201 (10.18) 5V ? No CHECK IC201 Yes IC201 (6) No CHECK I/P SIGNAL 0.
H. Bill of Material No. Parts Number 1 002-L16-AOPEN Parts Description USER MANUAL Unit Q'ty Location EA 1 2 005-009-AOPEN-C CARTON EA 1 3 200-100-P6NS MAIN/B REV:B+++ Brite Plu EA 1 4 200-200-P6NS CRT/B REV:B+ Brite Plus EA 1 5 200-700-RXP6 CONTROL PCB REV:B+ EA 1 6 210-100-0256 R-CF. 10 ohm 1/2W +-5%. EA 1 R631, 7 210-100-0256 R-CF. 10 ohm 1/2W +-5%. EA 1 R734, 8 210-100-0456 R-CF. 10 ohm 1/4W +-5%. EA 1 R762, 9 210-101-0456 R-CF. 100 ohm 1/4W +-5%.
43 210-203-0856 R-CF. 20K ohm 1/8W +-5%. EA 1 R629, 44 210-221-0456 R-CF. 220 ohm 1/4W +-5%. EA 1 R534, 45 210-221-0856 R-CF. 220 ohm 1/8W +-5%. EA 2 R910,R911, 46 210-222-0856 R-CF. 2.2K ohm 1/8W +-5%. EA 1 R947, 47 210-223-0856 R-CF. 22K ohm 1/8W +-5%. EA 3 R535,R654,R728, 48 210-223-0856 R-CF. 22K ohm 1/8W +-5%. EA 2 R723,R667, 49 210-242-0856 R-CF. 2.4K ohm 1/8W +-5%. EA 1 R992, 50 210-270-0456 R-CF. 27 ohm 1/4W +-5%. EA 1 R979, 51 210-271-0256 R-CF.
89 210-510-0256 R-CF. 90 210-512-0456 51 ohm 1/2W +-5%. EA 4 R236,R266,R2A2,R206, R-CF. 5.1K ohm 1/4W +-5%. EA 1 R903, 91 210-512-0856 R-CF. 5.1K ohm 1/8W +-5%. EA 2 R739,R760, 92 210-513-0856 R-CF. 51K ohm 1/8W +-5%. EA 1 R2A6, 93 210-513-0856 R-CF. 51K ohm 1/8W +-5%. EA 1 R738A, 94 210-561-0856 R-CF. 560 ohm 1/8W +-5%. EA 1 R920, 95 210-562-0456 R-CF. 5.6K ohm 1/4W +-5%. EA 1 R334, 96 210-563-0456 R-CF. 56K ohm 1/4W +-5%. EA 1 R668, 97 210-622-0856 R-CF. 6.
136 221-081-3572 R-PRE. 35.7K ohm 1/8W +-1%. EA 1 R302, 137 221-081-3903 R-PRE. 390K ohm 1/8W +-1%. EA 1 R752, 138 221-081-5101 R-PRE. 5.1K ohm 1/8W +-1%. EA 1 R748, 139 221-081-5621 R-PRE. 5.62K ohm 1/8W +-1%. EA 1 R613, 140 221-081-5621 R-PRE. 5.62K ohm 1/8W +-1%. EA 1 R333, 141 221-081-6190 R-PRE. 619 ohm 1/8W +-1%. EA 1 R750, 142 231-202-0677 VR. 2KB ohm 6D Lying EA 2 VR501,VR601, 143 232-R22-2059 R-WR. 0.22 ohm 2W +-5%. EA 1 R526, 144 300-100-0120 EC.
183 307-103-3570 CC. 0.01uF/500V +-20% 184 307-104-1770 CC. 185 307-104-1770 EA 1 C714, 0.1u/50V +-20% Y5V TP EA 1 C279, CC. 0.1u/50V +-20% Y5V TP EA 6 C616,C622,C724,C904,C908,C909, 186 307-104-1770 CC. 0.1u/50V +-20% Y5V TP EA 2 C902A,C902B, 187 307-182-1160 CC. 1800pF/50V +-10% EA 1 C294, 188 307-182-3160 CC. 1800P/500V 10% DIP Y5P. EA 1 C741, 189 307-221-1160 CC. EA 2 C614,C753, 190 307-221-3160 CC.
229 319-221-1060 CERAMIC-CAP 220pF/1KV. EA 1 C522, 230 319-221-1060 CERAMIC-CAP 220pF/1KV. EA 1 C720, 231 326-222-0120 PPL.2200pF/100V +-2% TP. EA 1 C516, 232 326-821-0120 PPL. 820pF/100V +-2% TP. EA 1 C610, 233 328-103-2260 AXMIAL CC.-CAP 0.01uF/50V+-10% EA 3 C231,C261,C201, 234 328-103-2260 AXMIAL CC.-CAP 0.01uF/50V+-10% EA 1 C267, 235 328-103-2260 AXMIAL CC.-CAP 0.01uF/50V+-10% EA 4 C779,C602,C604,C711, 236 328-103-2260 AXMIAL CC.-CAP 0.
270 511-005-10N2 P8 FQP10N20C EA 1 Q707, 271 511-005-10N2 P8 FQP10N20C EA 1 Q709, 272 520-001-4148 DIODE 1N4148. EA 9 D231,D261,D203,D233,D263,D202,D232,D262, D201, EA D507,D716,D603,D604,D518,D713, D720,D725,D601,D602,D607,D608, 28 D901,D902,D904,D606,D532,D610, D611,D714,D752,D753,D755,D711A, D905,D503,D306,D907, 273 520-001-4148 DIODE 1N4148. 274 520-005-0007 LED 3mm Green Round EA 1 LED902, 275 520-010-4002 DIODE IN4002 1A/100V. EA 1 D304, 276 520-010-4936 DIODE 1N4936.
310 630-001-3001 BASE 2.36D 1P. EA 1 P281, 311 630-001-3001 BASE 2.36D 1P. EA 2 P505,TCO, 312 630-002-1009 BASE 2pin JWT A2001 PITCH=2mm Straight EA 1 P601, 313 630-002-3001 BASE 2P 2.36∮ PITCH 10mm TPE. EA 1 P502, 314 630-002-4001 BASE 0.6D 2P EA 1 P903, 315 630-004-3001 BASE 2.36D 4P. EA 1 P701, 316 630-005-1009 BASE 5P JWT A2001 PITCH 2.0D. Straight EA 1 P905, 317 630-005-4001 BASE 0.6D 5P. EA 1 P902, 318 630-006-4001R BASE PITCH 2.
Exploded Parts List No. 1 Ref.
I.
J.
K.
CRT BOARD A70PF(RX-777NS) 32 / 33
MEMO A70PF(RX-777NS) 33 / 33
