Page 1: ...OARD DETAIL COMPONENT LOCATION 6 ALIGNMENT PROCEDURE 7 PREASSEMBLY INSPECTION AND HANDLING INSTRUCTIONS 9 CAUTION FOR SERVICING 9 DISASSEMBLY INSTRUCTION 10 MONITOR CIRCUIT BOARD SOLDER VIEW 11 SCHEMA...
Page 2: ...meter Connect to chassis and to the CRT anode button 1 5 2 Turn the Brightness control fully counterclockwise 1 5 3 Measure the h1gh voltage The h1gh voltage meter should indicate at the following fac...
Page 3: ...min 40pF max 2 Horizontal Sync Polarity Positive Signal Level TTL Input mp 1kohm Note Max rise and fall times from 10 to 90 of in put signals are less than 10ns Image test condition Display Full flat...
Page 4: ...1 b 1 0 06 1 5mm b2 b 0 2 0 06 1 5mm b C1 C 0 1 0 06 1 5mm c2 c2 c 2 0 06 1 5mm f1 fz 0 06 1 5mm I I I I L I I I Fig 1 GEOMETRIC DISTORSION Fig 2 CENTERING Outline of phosphor area Character area IA1...
Page 5: ...1 USER SUPPLY TIMING CHART Horizontal Sync Ver l ical Sync o o 4 61 S sec I I 52 083 sec 19 2kHz I 49 446 sec _ _ __ I I 2 637 sec J I 11 252 sec V d ir 1 11111111111111 11111111111111 llllllllllllll...
Page 6: ...GND V Sync Video in VB 12V H Sync Brightness VR User Supply t Video Out 014 _______ Vert Sync Inverter 031 DC Fuse 2A Horiz OSC Drive IC42 Horiz Out 044 5 Vertical Deflection Vert OSC Drive Output IC3...
Page 7: ...LOCATION Interface P C Board Upper Plate li4 L403 H Width Adj Point Front Chassis View L CRT Ground Spring Sub Bright VR67 J 0 0 V Hold VR31 V Height VR32 0 V Lin VR33 Focus VA VR64 L 1 Sub Contrast V...
Page 8: ...until the image be comes stable vertically as shown in Fig 5 Rolling M M I I I I I I M I I I I M M Locking in Fig 5 Checking of height width and bright should be performed more than 30 minutes after...
Page 9: ...in Fig 11 Before this adjustment be sure to as certain H hold Raster area a M Fig 11 a a a b b 8 TR 6051 A Focus Control Adjustment Adjust the focus control VR64 until optimum is seen on the character...
Page 10: ...CRT display for the specified active character area per Page 3 4 of this Manual 6 Check Geometric Distortion 7 Check focus 8 Check Power Supply Voltages in accordance per Page 2 of th is Manual CAUTI...
Page 11: ...ve the deflection yoke connector of the main P C Board Top View How to replace the CRT 1 Remove the anod cap Care must be taken as high voltage may be remain ing 2 Remove the upper plate fixing four s...
Page 12: ...Iu u J40 10 icgfo 2 1 1 1 IR S l i I i l I E6 Q J4 J5 3 0 Rl64 n J S lz1 1ii fo 1 g T I 1 l 1 Q10C121 filB_ o l5 i J6 0 13 I rR134 012 I _ L121 o e4 C123 R125 J11 I 3 3 0 ti1 0 Rl29 S I UI C 013 zj IZ...
Page 13: ...of C8J 8Cit11nce is F unless otherwise noted f t Polyester tt Electrolytic capacitor 3 COIL Unit of inductance is H TRANSISTORJIASE INFORMATION LOCATION PARTS NAME J 2SC828 Ql ei 2SC2632 i 250884 AN5...
Page 14: ...VR11 r r7 R601 5008 lr __ __ _ 36 M Jo r Rl 3 o v h 11 A IC31 0 5V AN5763 OV 6 9V 1 6V 0 1 T 11 4V 6 1V J 12V C308 a _ __ C305 fill 33 C309 Ifill 4 7 Ifill VR33 IOKB tl J C306 16V4 7 220 R312 680 1R3...
Page 15: ...ow control Normal Check CRT Display No Check Base voltage level of 014 Check Sub cont VR VRl 1 Yes t Check DC voltage level of Normal Check DC voltage level of CRT Gl CRT Cathode Confirm the voltage w...
Page 16: ...2 Normal Check base and emitter signal level of 044 Normal Trouble in high voltage circuit Check B line voltage of 40V G2 G2 14 OVor low Normal Check DC voltage with no load OV or low Trouble in Exter...
Page 17: ...and timing of 5 pin connector r 1 Trouble in logic Abnormal Normal Check Verticalty of CRT Display Adjust Vertical hold r No vertical sync Check Pin l signal level of IC31 Abnormal 1 4 i Trouble in Q...
Page 18: ...n 3 signal level and voltage of IC41 Normal Check Pin 4 9 DC voltage level of IC41 Confirm should be varied when turn the H Hold VR Abnormal Zero or low No Normal 16 Trouble in logic side Trouble in t...
Page 19: ...4 5 8 signal level of IC31 and Pin 12 DC voltage of 12V line Normal Check deflec tion coil deflection coil connector Check contact P1 P2 of deflection yoke Normal Check deflection coil open H Lin Widt...
Page 20: ...2932 RT BAND UX80702 1 HASSIS FLAME DIODES UX80703 1 PPER PLATE VS10E1 DIODE UX80971 ORD BRACKET VSBB4A DIODE BM800049 DEL PLATE VSS1R80 DIODE ES8143 6 PRING CRT EARTH VSBB2 IODE MM1455 BEADS BAND VSD...
Page 21: ...SOCKET 441 ECKD2H332KB9 3300PF K 500V MK81565 BARRIER CRT PC BOARD 443 ECQM4123KZ p 0 012UF K 400V MM81416 ORD BAND SMALL 444 ECEA25W6R5Q E 6 5UF 25V MM81434 RIVET 445 ECEA1CU101 E 100UF 16V QF81862 F...
Page 22: ...ut voltage 12V Input voltage 11 75V To improve tempera C307 ECEA1CU100 ECEA1CG100S E lO F 16V F06330001 ture derating C308 ECEAOJU330 ECEA1CG330S E 33 F 16V C461 ECEA1JU101 ECEA1JG101S E lOO F 63V Cos...
Page 23: ...unless otherwise noted the following marks Unit of cepecit11nce is F unless otherwise noted ij Polyester tF Electrolyttc capacitor 3 COIL Unit of inductance is H TRANSISTOR SASE INFORMATION LOCATION...
Page 24: ...res important for pr tection from X Radiation fire and electrical shock hazards When servicing it is essential that only manufacturer s specified parts be used for those R314 w i R313 2 10 L404 11 H 0...
Page 25: ...Panasonid Printed in USA I I I I e...
