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Aiwa TV-C1421, Руководство по обслуживанию

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Aiwa TV-C1421 Скачать руководство пользователя страница 8

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4. NK C.B REMOVAL

(1) Disconnect CN903 (CRT GND), CN904 (SCREEN).

(2) Remove the NK C.B in the direction of arrow  1 .

(See Figure 4-1)

5. MAIN C.B REMOVAL

(1) Remove connector (CN401).

(2) Remove connector (CN802).

(3) Remove connector (CN801).

(4) Pull out the MAIN C.B. in the direction of the arrow  2

(See Figure 4-1)

1

2

Figure 4-1

CN903

CN904

NK C.B

CN801

CN401

(Speakers)

CN802

(Power cord)

Front cabinet

A

Figure 5-1

6. DECIDING A SERVICING POSITION

(1) Remove the CN401 (speakers).

(2) Rotate the circuit board to the direction with arrow A,

and set it up. (See Figure 5-1)

Содержание TV-C1421

Страница 1: ...COLOR TELEVISION TV C1421 TV C1422 KE KER SHR S M Code No 09 01A 447 4R1 REVISION This Service Manual is the Revision Publishing and replaces Simple Manual of TV C1421 KE KER and TV C1422 SHR S M Cod...

Страница 2: ...Vrms 33k ohms Audio Output 0 5 Vrms less than 2 2k ohms Speakers 50 x 120 mm 2 2 x 43 4 in Operating Voltage 110 V 240 V AC 50 60 Hz Power Consumption 55W Earphone Jack Monaural mini jack Operating Te...

Страница 3: ...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 tu...

Страница 4: ...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 off 2 2 Anode Cap Removal Discharge the anode voltage See Figure 2...

Страница 5: ...stalling 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 the anode cap S...

Страница 6: ...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 7: ...cap 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...

Страница 8: ...2 Remove connector CN802 3 Remove connector CN801 4 Pull out the MAIN C B in the direction of the arrow 2 See Figure 4 1 1 2 Figure 4 1 CN903 CN904 NK C B CN801 CN401 Speakers CN802 Power cord Front...

Страница 9: ...E 47 16 SMG C320 87 A12 087 080 CAP E 1 50 SMG C324 87 A12 066 080 CAP E 47 16 SMG C326 87 012 195 080 C CAP U 100P 50 C327 87 012 195 080 C CAP U 100P 50 C328 87 012 195 080 C CAP U 100P 50 C331 87 0...

Страница 10: ...80 COIL 10UH J SP02 SHR L830 87 A50 466 010 COIL 390UH CRCH 106 LF801 87 JB8 651 010 FLTR LINE SS24H K15070 PR830 87 A90 090 080 PROTECTOR 1 5A 491SERIES 60V PR831 87 A90 094 080 PROTECTOR 4A 491SERIE...

Страница 11: ...125 3216 5 5 5 CJ CJ CJ Form L W t 1 6 0 8 0 45 2 1 25 0 45 3 2 1 6 108 118 128 A A CHIP RESISTOR PART CODE 0 55 Resistor Code Dimensions mm Symbol 1 16W 1005 5 CJ 1 0 0 5 0 35 104 L t W TRANSISTOR IL...

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

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

Страница 14: ...14 SCHEMATIC DIAGRAM MAIN NK...

Страница 15: ...15 IC BLOCK DIAGRAM...

Страница 16: ...rol loop 18 A GND GND analog TV processor 19 BANDGAP Bandgap decoupling 20 AVL AVL Automatic Volume Levelling 21 V DR Vertical drive 22 V DR Vertical drive 23 PIF I IF input 24 PIF I IF input 25 IREF...

Страница 17: ...K I Black current input vertical guard 51 R OUT O Red output 52 G OUT O Green output 53 B OUT O Blue output 54 3 3VDDA VCC 3 3V 55 VPE GND GND 56 3 3VDDC VCC 3 3 V 57 XGND GND crystal oscillator 58 XI...

Страница 18: ...00 mV div 10 ms div IC301 PIN 22 V DR 200 mV div 10 ms div IC301 PIN 26 VSAW 1 V div 10 ms div 1 2 3 4 IC301 PIN 28 AU DEEM 1 V div 10ms div IC301 PIN 33 HOUT 1 V div 50 s div IC301 PIN 34 SAND 2V div...

Страница 19: ...s div IC301 PIN 42 CVBS Y 500 mV div 20 s div IC301 PIN 44 AUDIO OUT 500 mV div 2 ms div 9 10 11 12 IC801 PIN 3 CTRL 500 mV div 5 s div IC801 PIN 4 DEMAG 500 mV div 5 s div IC801 PIN 5 SENCE 500 mV d...

Страница 20: ...20 IC801 PIN 8 DROIN 50 V div 2 s div TUT101 PIN11 IF1 200 mV div 50 s div 17 18 17 18...

Страница 21: ...0 0 12 0 0 13 2 29 0 63 PIN NO STD STANDBY 1 0 0 2 0 0 3 0 0 4 0 0 5 4 92 4 92 6 4 92 4 92 7 0 61 0 8 4 92 4 92 IC1 M24C04 WMN6T PIN NO STD STANDBY 14 7 75 0 15 4 96 0 16 2 72 0 20 17 3 88 0 18 0 0 1...

Страница 22: ...93 64 4 90 4 90 PIN NO STD STANDBY 1 0 2 48 2 0 0 3 6 48 4 82 IC830 HA17431VP PIN NO STD STANDBY 1 15 49 13 41 2 0 0 3 1 27 1 40 4 0 19 0 5 0 0 6 1 40 0 7 0 0 8 328 334 IC801 TEA1507P PIN NO STD STAND...

Страница 23: ...0 Q 102 SHR ONLY B 1 89 1 89 C 0 63 0 63 E 0 0 Q 301 B 4 65 5 51 C 0 0 E 2 55 0 20 Q 401 B 1 96 1 69 C 2 58 0 E 2 48 0 PIN NAME STD STANDBY Q 501 B 0 36 0 42 C 0 31 0 31 E 0 0 Q 602 B 0 0 C 68 60 114...

Страница 24: ...2 0 63 C 2 26 0 E 7 77 0 63 Q 719 B 1 89 0 C 7 22 0 63 E 1 34 0 Q 802 B 0 63 0 C 0 7 87 E 0 0 PIN NAME STD STANDBY Q 803 B 7 18 7 87 C 7 81 0 63 E 7 94 7 95 Q 805 B 3 34 3 34 C 0 0 E 3 34 3 34 Q 839 B...

Страница 25: ...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 specifications calibrate the...

Страница 26: ...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 27: ...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 CRT funnel stop movement before the adjustment position and...

Страница 28: ...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 29: ...stment Menu Screen 5 1 Adjustment of screen size and screen position PAL 1 1 H POS 50 1 2 V POS 50 1 3 V SIZE 50 1 4 V LINEA 50 1 5 OSD H 50 1 6 OSD V 50 5 2 Adjustment of screen size and screen posit...

Страница 30: ...ng two places as shown in the diagram below so that the hidden keys become easily accessible Hidden keys FINISH When FINISH key found on the jig remote controller is pressed the integrating time of ag...

Страница 31: ...OK or DN 3 Operating Adjustment Mode 1 Press SLEEP key once at the aging mode to display MENU 1 of the adjustment mode 2 Press the Channel key to switch between the menus from MENU 1 to MENU 12 3 Pre...

Страница 32: ...GHT BRIGHT center value 20H 3 CONT CONTRAST center value 20H 4 TINT TINT center value 20H 5 SHARP PEAKING center value 3FH 6 CD LVL Cathode drive level 04H 7 Y SECAM SECAM Y delay 06H 8 Y NTSC NTSC Y...

Страница 33: ...7 GAIN73 GAIN TDA9873 0 REDUCE GA 01H IN 1 NORMAL GAIN 8 GAIN ST STEREO GAIN 20H 9 AVL UOC UOC internal AUTO VOLUME LEVEL 00H 10 DEF VOL Volume level of factory setting 10H MENU 10 No MENU Details 1...

Страница 34: ...device setting Adjustment menu number MENU1 1 Input signal PAL mono scope SPEC Right and left horizontal scales are equal MODE VIDEO 1 Input LION mark signal with a mono scope 2 Use the VOLUME or key...

Страница 35: ...es within the range specified in SPEC Fig 1 5 TV Measuring device setting V SIZE 50 simple adjustment Adjustment menu number MENU1 3 Input signal PAL CONVERGENCE SPEC The number of boxes 13 to 13 25 M...

Страница 36: ...ark and B the right end to mark Fig 1 9 1 6 OSD V 50 Adjustment of PAL OSD vertical position TV Measuring device setting Adjustment menu number MENU1 5 Input signal PAL CONVERGENCE SPEC A B MODE VIDEO...

Страница 37: ...appearing in the right and left edges of the mono scope screen with the CRT center mark Fig 2 3 TV Measuring device setting V POS 60 simple adjustment Adjustment menu number MENU2 2 Input signal NTSC...

Страница 38: ...adjustment check V POS 60 PAGE 2 2 and V SIZE 60 PAGE 2 3 Adjust irregularity if found TV Measuring device setting V LINEA 60 simple adjustment Adjustment menu number MENU2 4 Input signal NTSC cross h...

Страница 39: ...ghtness 4 1 SCREEN Adjustment of screen TV Measuring device setting Adjustment menu number MENU3 2 Input signal PAL color bar FULLFIELD WHITE 75 Adjustment point T601 FBT lower SFR SPEC WBC 04H HBC 02...

Страница 40: ...U5 5 B GAIN Input signal White luster WHITE 100 SPEC WHITE MODE VIDEO Apply aging for at least 20 minutes before adjustment Repeat the whole steps 1 to 6 several times to complete this adjustment Fig...

Страница 41: ...AL EXPLODED VIEW 1 1 TV C1421 KEJ1C KERJ74M TV C1422 SHRJ1C FileName TVC1421 EPS 13 8 20 BJB P C C PWB 12 11 9 10 D D D D E 13 F 14 15 16 PWB G G G G G 8 8 7 B B A 17 17 HLDR LED 2 3 1 5 4 6 WIRE ASSY...

Страница 42: ...010 HLDR SF 2001 HV CABLE 16 8B JAH 007 010 BTN POWER 2 17 84 LB3 692 010 CONN ASSY 4P SP 1 A 87 067 680 010 BVI T3 3 10 B 87 078 070 010 BVIT3B 4 12 C 87 078 203 110 S SCREW W5 25 D 87 067 766 010 BV...

Страница 43: ...2 11 IKENOHATA 1 CHOME TAITO KU TOKYO 110 JAPAN TEL 03 3827 3111 Printed in Singapore 2000068 9301944 921338...

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