Akai 15CTF66BC Service Manual Download | Manualshive

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15CTF66BC

21CTF66BC
21CTS65BS

Models:

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Summary of Contents for 15CTF66BC

Page 1: ...15CTF66BC 21CTF66BC 21CTS65BS Models ...

Page 2: ...CONTENTS 1 safety precautions 2 2 block diagram 3 3 Replacement of memory IC 4 4 Service adjustment 5 5 IC s functional description 7 6 Test point waveform 10 7 IC s voltages 11 8 Circuit diagram 12 ...

Page 3: ...eck high voltage by drawing an arc Use a high voltage meter or a high voltage probe with a VTVM Discharge the picture tube before attempting meter connection by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10kΩ 2W resitor to the anode button 9 When service is required observe the original lead dress Extra precaution should be given to assure correct...

Page 4: ...RIVE IF1 IN IF2 IN RF AGC SDA SCL V OUT H OUT RGB OUT AUDIO OUT C IN S VIDEO SPEAKER L SPEAKER R V1 IN EHT DEFLECT B 27V 12V 8V 5V 3 3V 13V 13V OPTION AN17821 TDA121XX V1 IN AL1 IN AR1 IN Y IN U IN V IN V OUT AL OUT AR OUT V2 IN AL2 IN AR2 IN LSL OUT LSR OUT SELECT V OUT V IN U IN Y IN V2 IN AL IN AR IN 3 ...

Page 5: ... circuits When replacing memory IC be sure to use IC written with the initial value of data 2 PROCEDURE FOR REPLACING MEMORY IC 1 Power off Switch the power off and unplug the power cord from AC outlet 2 Replace IC Be sure to use memory IC written with the initial data values 3 Power On Plug the power cord into the AC outlet and switch the power On ...

Page 6: ...C DESCRIPTION TEST SW 0 Internal signal V SLOPE 25 00 Picture vertical center VARIABLE 0 63 V POSI 23 00 The vertical positions VARIABLE 0 63 V SIZE 32 00 The vertical amplitude VARIABLE 0 63 V SC 32 00 The Vertical S correction VARIABLE 0 63 H PHASE 35 00 The horizontal position VARIABLE 0 63 H BLK SW ON Switch of horizontal wide blanking H BLK L 0 Time of horizontal wide blanking start of blanki...

Page 7: ...LE 0 63 B BIA 32 B bais adjusted VARIABLE 0 63 R DRV 32 R drive adjusted VARIABLE 0 63 G DRV 32 G drive adjusted VARIABLE 0 63 B DRV 32 B drive adjusted VARIABLE 0 63 SUB BRT 32 Sub Brightness VARIABLE 0 63 VSD Vertical scan disable CL 12 Cathode drive level VARIABLE 0 15 BLOC 6 Black level offset course VARIABLE 0 15 z SELECT THE SIGNAL INʻʻTEST SʼʼMENU z SELECTʻʻVSDʼʼ AND PRESSʻʻV ʼʼ KEY WILL BE...

Page 8: ... color bar signal adjust AGC value voltage from high to low to picture noise reduce gradually to be just disappeared Select shipping push V V key to be shipped 5 IC s functional description TDA111XX TDA121XX Function Main IC SYMBOL PIN DESCRIPTION IFVO 1 CVBS output front end or selected video VP2 2 Supply VSP IF and sound 5V VCCAUDIO 3 Supply VSP only sound output stage 8V PLLIF 4 IF PLL time con...

Page 9: ... Second phase loop components VP1 22 Supply VSP 5V DECDIG 23 Digital decoupling XTALOUT 24 24 576MHZ crystal output XTALIN 25 24 576MHZ crystal input IR 26 IR receiver MUTE 27 MUTE output S INDENT UFH 28 S VIDEO indent KEY 29 Key input BAND2 30 BAND 2 BAND1 31 BAND 1 TUNING 32 14 BIT PWM VT output VDDP 33 Supply TCG periphery 3 3V SDA 34 SDA output SCL 35 SCL output AV1 36 AV1 control AV2 37 AV2 c...

Page 10: ...LSL 59 Audio output loudspeaker left C2 C3 C4 AIN5R 60 Chroma or audio input AIN3 IN1R 61 Audio1 input CVBS2 Y2 62 CVBS2 input AIN2 1INL 63 AUDIO2 input CVBS Y4 AIN5L 64 CVBS1 input AN17821 17823 Function audio output Symbol PIN Function Symbol PIN Function Vcc 1 Power supply GND 7 ground Out 1 2 Ch 1 output In 2 8 Ch 2 input GND out 1 3 Ch 1Ground VOL 9 Volume Control Out 1 4 Ch 1 output Out 2 10...

Page 11: ...int Waveforms 10 TDA111XX PIN44 1 2Vpp 1 2Vpp 1 2Vpp H H H TDA111XX PIN45 TDA111XX PIN46 1 3Vpp TDA111XX PIN24 2 0Vpp H TDA111XX PIN1 0 9Vpp V451 C 5Vpp 1000Vpp H H 1Vpp V H H CRT KB CRT KG CRT KR 95Vpp 95Vpp 95Vpp H H H TDA111XX PIN56 TDA111XX PIN57 HEATER 22Vpp H 0 8Vpp 2 7Vpp V V451 B TDA111XX PIN15 TDA111XX PIN14 ...

Page 12: ... 0 2 3 1 8 5 2 6 1 8 1 8 5 0 0 3 3 0 0 PIN 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 V 3 3 3 8 3 6 0 0 3 3 0 3 3 0 0 3 3 2 2 2 2 2 2 0 2 6 PIN 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 V 0 5 1 4 1 6 1 6 1 9 5 0 0 6 0 35 2 5 2 5 0 6 2 2 1 4 2 2 1 4 STV9302A LA78040 PIN 1 2 3 4 5 6 7 V 0 7 15 12 15 0 3 15 9 0 07 AN17821 AN17823 PIN 1 2 3 4 5 6 7 8 9 10 11 12 V 12 7 0 7 3 3 1 4 0 1 4 0 7 ...

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