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Aiwa TV-FA2500, Руководство по обслуживанию

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Aiwa TV-FA2500 Скачать руководство пользователя страница 38

– 38 –

5. NK C.B (VM SECTION)

51

51

53

CN951  PIN3: Y OUT

20 

µ

s/div

1 V/div

Q982  EMITTER

10 

µ

s/div

500 mV/div

10 

µ

s/div

200 mV/div

Q952  BASE

52

53

52

10 ms/div
1 V/div

Q953  BASE

54

54

20 

µ

s/div

500 mV/div

Q955  EMITTER

55

55

CN952  PIN1: VM

20 

µ

s/div

10 V/div

56

56

CN952  PIN1: VM

500 ns/div
10 V/div

57

57

Содержание TV-FA2500

Страница 1: ...LEVISION TV FA2500 SH SHA S M Code No 09 00A 437 6R1 R E V I S I O N This Service Manual is the Revision Publishing and replaces Simple Manual of TV FA2500 SH S M Code No 09 009 437 6T1 and TV FA2500...

Страница 2: ...ATIC DIAGRAM 1 MAIN 16 WIRING 2 AUDIO SH 17 WIRING 3 AUDIO SHA 18 SCHEMATIC DIAGRAM 2 AUDIO SH SHA 19 WIRING 4 NK SH 20 WIRING 5 NK SHA 21 SCHEMATIC DIAGRAM 3 NK SH SHA 22 WIRING 6 PIN SH 23 WIRING 7...

Страница 3: ...l 235 8 in Video Input Output 1 Vp p 75 ohms Audio Input 8 dBs more than 33 k ohms Audio Output 8 dBs less than 2 2 k ohms 10 W 10 W 10 Harmonic distortion Speaker 60 X 120 mm 23 8 X 43 4 in Operating...

Страница 4: ...the followings board The inside wiring is designed not to get close to the pyrogenic parts and high voltage parts Therefore put these parts in the original positions 5 Take care of the cathode ray tub...

Страница 5: ...led the cap would come off from the CRT anode button easily causing an accident Do not turn the anode cap 3 If the anode cap is turned in the direction of its circumference the hook is likely to come...

Страница 6: ...e cap after installing it Never re use the hook when it has been deformed 1 If the anode cap is turned after it is installed it may come off Therefore arrange the high voltage cable before attaching t...

Страница 7: ...could turn and cause an installation defect 4 Turn over the rubber cap symmetrically on the left and right See Figure 3 4 Caution Take great care not to damage the anode cap Figure 3 3 5 Fit your fore...

Страница 8: ...ap turned over and visually check that the hook is engaged securely 9 Release your hand from the rubber cap of the anode cap Caution Cover the anode cap so that it does not lift 10 Hold the skirt of t...

Страница 9: ...irection of arrow 1 See Figure 4 1 5 MAIN C B PWB MAIN REMOVAL 1 Remove connector CN408 2 Remove connector CN801 3 Remove connector CN802 4 Pull out the MAIN C B in the direction of the arrow 2 See Fi...

Страница 10: ...405 080 CAP ELECT 10 50V C14 87 018 129 080 CAP CER 680P 50V C15 87 018 149 080 CAP TC U 15P 50 CH C16 87 018 149 080 CAP TC U 15P 50 CH C17 87 010 404 080 CAP ELECT 4 7 50V C101 87 010 404 080 CAP EL...

Страница 11: ...7 008 574 080 FLTR SFSH4 5MCB CF206 87 A90 223 080 FLTR SFSH6 0MCB CF207 87 008 575 080 FLTR CFSFSH5 5MCB CF208 87 008 576 080 FLTR CFSFSH6 5MCB CN1 87 A60 446 010 CONN 7P V TID X CN601 87 099 762 010...

Страница 12: ...T 1000 25V SME C482 87 010 401 080 CAP ELECT 1 50V C483 87 010 247 080 CAP ELECT 100 50V C484 87 A11 148 080 CAP TC U 0 1 50 Z F C493 87 010 112 080 CAP ELECT 100 16V C498 87 010 402 080 CAP ELECT 2 2...

Страница 13: ...2 090 CAP CER 1200P 2K K BNDE C654 87 A10 833 090 CAP CER 1000P 2K K R C655 87 A11 278 090 CAP M P 0 47 250 J ECWF SR 8 8 A Resistor Code Chip Resistor Part Coding Figure Value of resistor Chip resist...

Страница 14: ...RATION 2SC3467D E 2SA1015GR 2SA950 2SC2785FE DTC323TS 2SC3779D E 2SJ460 2SK2541 2SC1740SRS DTC144ES 2SA933SRS 2SA1175FE 2SD2580 E C B S D G B C E E C B B E C E C B B C E 2SD2531 2SC4793 2SA1837 B C E...

Страница 15: ...WIRING 1 MAIN 15 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 A B C D E F G H I J K L M N O P Q R S T U 1 2 3 4 5 6 7 8 9 25 26 27 28 29 30 31 32...

Страница 16: ...16 SCHEMATIC DIAGRAM 1 MAIN...

Страница 17: ...WIRING 2 AUDIO SH 17 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 A B C D E F G H I J K L M N O P Q R S T U 1 2 3 4 5 6 7 8 9 25 26 27 28 29 30 31 32...

Страница 18: ...WIRING 3 AUDIO SHA 18 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 A B C D E F G H I J K L M N O P Q R S T U 1 2 3 4 5 6 7 8 9 25 26 27 28 29 30 31 32...

Страница 19: ...19 SCHEMATIC DIAGRAM 2 AUDIO SH SHA...

Страница 20: ...WIRING 4 NK SH 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D E F G H I J K L M N O P Q R S T U...

Страница 21: ...WIRING 5 NK SHA 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D E F G H I J K L M N O P Q R S T U...

Страница 22: ...22 SCHEMATIC DIAGRAM 3 NK SH SHA...

Страница 23: ...WIRING 6 PIN SH 23 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 A B C D E F G H I J K L M N O P Q R S T U 1 2 3 4 5 6 7 8 9 25 26 27 28 29 30 31 32...

Страница 24: ...WIRING 7 PIN SHA 24 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 A B C D E F G H I J K L M N O P Q R S T U 1 2 3 4 5 6 7 8 9 25 26 27 28 29 30 31 32...

Страница 25: ...25 SCHEMATIC DIAGRAM 4 PIN SH SHA...

Страница 26: ...26 IC BLOCK DIAGRAM...

Страница 27: ...27...

Страница 28: ...uner AFT voltage input 18 STEREO I MSP key input 19 SGV O Video signal generate Factory output Not used 20 SUFFIX I Feature select initial input Not used 21 VSS GND 22 OSD R O OSD red output 23 OSD G...

Страница 29: ...9 VCC The VCC pin for Y C processing block 10 B Y IN I The input pin for external B Y signal Not used 11 GND The GND pin 12 F0 FIL I The pin for connecting a capacitor for automatic adjusting circuit...

Страница 30: ...17 RGB VCC Vcc of RGB circuit 18 ROUT O R signals output 19 GOUT O G signals outout 20 BOUT O B signals output 21 ABL I ABL control 22 V RAMP Connected with cap to make V RAMP signal 23 V NFB I Input...

Страница 31: ...SIF signal detected in IF circuit 48 LOOP FIL Loop filter for IF PLL 49 VCO GND GND of VCO and SIF circuit 50 VCO The terminal connected with a tank coil for IF VCO 51 VCO The terminal connected with...

Страница 32: ...N47 IFDET OUT 3 3 IC301 PIN43 SYNC IN 4 4 500 ns div 20 mV div 20 s div 500 mV div 20 s div 500 mV div IC301 PIN2 A DE EN 5 5 500 s div 500 mV div 50 s div 2 V div IC301 PIN 31 SYNC OUT 6 6 20 s div 5...

Страница 33: ...C501 PIN3 IC501 PIN7 IC501 PIN4 5 ms div 10 V div IC301 PIN22 V RAMP 10 ms div 2 V div 11 11 10 10 12 14 14 12 13 13 IC301 PIN18 R OUT IC301 PIN19 G OUT 15 16 15 16 IC1 PIN26 HD 17 IC1 PIN32 X OUT 1 m...

Страница 34: ...v 500 V div CN601 PIN1 H 29 29 CN601 PIN2 H 30 30 20 s div 100 V div CNA802 PIN5 HEATER IC301 PIN34 SCP OUT 31 20 s div 10 V div 31 IC301 PIN39 Y IN IC301 PIN37 B Y IN SECAM INPUT 20 s div 500 mV div...

Страница 35: ...35 CNA501 PIN1 V 5 ms div 2 V div CNA501 PIN2 IV DET 37 38 37 38 5 ms div 5 V div...

Страница 36: ...V div IC651 PIN6 40 39 40 39 10 ms div 2 V div 10 ms div 200 mV div 10 ms div 10 V div Q651 BASE Q651 COLLECTOR 41 42 41 42 D652 CATHODE 5 ms div 50 V div 43 43 10 s div 2 5 V div IC801 PIN1 44 44 IC8...

Страница 37: ...37 4 AUDIO C B 47 47 200 s div 100 mV div C401 PIN15 L IN IC401 PIN7 L OUT 48 48 200 s div 100 mV div IC410 PIN2 CH1 IN IC410 PIN12 CH1 OUT 500 s div 2 V div 500 s div 200 mV div 49 49 50 50...

Страница 38: ...OUT 20 s div 1 V div Q982 EMITTER 10 s div 500 mV div 10 s div 200 mV div Q952 BASE 52 53 52 10 ms div 1 V div Q953 BASE 54 54 20 s div 500 mV div Q955 EMITTER 55 55 CN952 PIN1 VM 20 s div 10 V div 5...

Страница 39: ...E 3 6 0 Q108 B 4 6 0 C 9 0 1 E 4 0 Q301 B 11 3 9 5 C 11 9 1 5 E 11 9 9 6 Q302 G 4 6 0 D 0 9 5 S 0 0 1 MAIN C B REF MODE NAME STD STANDBY Q303 B 4 4 0 1 C 0 3 0 1 E 0 0 Q501 B 0 0 C 4 4 0 1 E 0 0 Q601...

Страница 40: ...0 19 0 0 0 20 0 6 0 0 21 0 0 0 22 0 0 0 23 0 0 0 24 0 0 0 25 0 0 0 26 4 1 0 1 0 1 27 1 4 0 1 0 1 28 5 5 5 29 5 5 5 30 0 0 0 31 2 2 2 1 2 1 32 2 4 2 4 2 4 33 5 5 5 34 0 0 1 7 35 0 0 2 3 36 5 5 5 37 4 8...

Страница 41: ...0 0 13 0 0 0 0 0 14 2 7 2 7 2 7 2 7 0 15 2 7 2 7 2 7 2 7 0 16 2 7 2 7 2 7 2 7 0 17 8 9 8 9 8 9 8 9 0 18 3 1 3 1 3 1 3 1 0 19 3 1 3 1 3 1 3 1 0 20 3 1 3 1 3 1 3 1 0 21 5 6 5 6 5 6 5 6 0 22 4 4 4 4 0 2...

Страница 42: ...Q407 B 1 26 C 0 E 0 Q408 G 0 5 D 11 7 0 S 0 0 Q409 G 4 6 0 D 0 5 S 0 0 MODE REF NO STD STANDBY IC403 1 4 5 0 1 2 4 5 0 1 3 4 5 0 1 4 4 5 5 4 1 6 4 1 7 4 5 8 0 0 9 4 8 5 10 4 8 5 11 5 0 1 12 5 0 1 13...

Страница 43: ...E 2 3 0 Q982 B 1 6 0 C 0 0 E 2 2 0 2 REF MODE NAME STD STANDBY Q901 B 9 0 1 C 123 118 E 8 5 0 1 Q902 B 9 0 1 C 120 118 E 8 5 0 1 Q903 B 9 0 1 C 121 118 E 8 5 0 1 Q904 B 3 1 0 2 C 8 5 0 1 E 2 7 0 Q905...

Страница 44: ...ignal has an amplitude of about 0 3 V with flat envelope Confirm that ratio of the burst signal amplitude and the red signal amplitude is 0 30 0 66 If the output signal does not conform with the speci...

Страница 45: ...wise looking from the CRT s back screen and disengage Be careful not to loose the lock ring too much If the magnet assembly has become shifted during adjustments secure it to the position in Fig 1 4 3...

Страница 46: ...king at the screen adjust the tilt of the deflecting yoke and tighten the DY lock screw 8 Shift the magnet assembly to the front toward the CRTfunnel stop movement before the adjustment position and t...

Страница 47: ...ke and the surface of the CRT funnel in order to secure the deflecting yoke Refer to Fig 1 9 Position of wedge Fig 1 9 Wedge Wedge Wedge In Fig 1 8 the two 6 pole magnets are stacked together so as to...

Страница 48: ...he FINISH key on the jig remote controller Avoid to press this key during general repairs Aging Mode Operation Method Make sure that confirmation is done after replacing the EEP ROM 1 Enter to the agi...

Страница 49: ...n ofAFT S curves are indicated by IN for suitable tuning HIGH for too high or LOW for too low OUT is indicated when no signal is supplied 3 Display of CRT ON accumulated hours The CRT usage time is ac...

Страница 50: ...50 Adjustment Mode Operation Method 1 Return to the aging display by pressing the TEST key and press CHANNEL key to display the adjustment menu screen...

Страница 51: ...50 TXT RGB MAC 62 51 ABL GAIN 00 52 V AGC 00 53 WHITE PEAK 00 54 MUTE 55 AF GAIN 56 VIDEO POL 57 BPF TOF 58 CHROMA TRAP 59 HALF TONE 60 COLOR SYS 61 CW SW 62 AFT MUTE 63 BLUE BACK 64 DC NF SPEED 65 V...

Страница 52: ...ent mode 1 H SIZE Horizontal Size Crosshatch Input signal Crosshatch Adjustment point SFR653 Measuring instrument Pattern generator PAL Use SFR653 to adjust the dot mark of the crosshatch to the cente...

Страница 53: ...Pattern generator PAL Using the volume keys on the jig remote controller adjust the dot mark to the exact vertical centre position in the crosshatch screen Fig 1 2 NTSC Adjustment Menu No 86 Input sig...

Страница 54: ...To adjust follow the same procedure as PAL 1 5 PIF VCO Video IF VCO Adjustment Adjustment Menu No 17 Page 1 5 Input signal No signal Test point IC3011PIN Auto adjustment 1 Press TEST key to enter agi...

Страница 55: ...mote controller to increase the numeric figure of the 5 B DRIVE up to more than 60 in hexadecimal figure till the color becomes bluish 2 6 Then reduce the numeric figure to the point where the bluish...

Страница 56: ...No 26 Page 3 2 This model does not support this function Set the data value to 00 Fig 3 2 3 3 RGB CONT Sub Contrast Adjustment Adjustment Menu No 27 Page 3 3 This model does not support this function...

Страница 57: ...Adjustment PAL Adjustment Menu No 4 Input signal Monoscope LION MARK Measuring instrument Monoscope PAL Use the volume keys on the jig remote controller to adjust the 6 circular figures on monoscope t...

Страница 58: ...mplitude Barrel Adjustment Zoom Mode PAL Adjustment Menu No 102 Input signal Crosshatch Measuring instrument Pattern generator PAL Use the CHANNEL keys to scoll through the adjustment menu and set to...

Страница 59: ...59 MECHANICAL EXPLODED VIEW 1 1...

Страница 60: ...16 87 A90 332 010 HLDR SF 2001 HV CABLE SHA 17 8Z JB6 695 010 AC CORD SET KE BLK 18 8A JEF 201 010 HLDR PWB SH 19 8A JEH 004 010 BTN POWER 2 20 8A JEF 007 110 PLATE AC A 87 067 680 010 BVI T3 3 10 B 8...

Страница 61: ...2 11 IKENOHATA 1 CHOME TAITO KU TOKYO 110 JAPAN TEL 03 3827 3111 Printed in Singapore 2000068 9630472...

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