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SERVICE MANUAL

8

MEASUREMENTS AND ADJUSTMENTS

1. FM, AM TRACKING VOLTAGE ADJUSTMENTS

(FM, AM)

DC VOLTMETER ........................... CONNECT TO TEST POINT TP1 and GND

NO.

Band

Frequency

Adjust for

Adjustment

1

FM

87.50MHz

1.5V

L7

2

AM

530KHz

1V

T404

2. AM RF ADJUSTMENT

Signal Generator ........................ Connects to the AM ANT. Coil through the loop antenna.
Adjust for the indication of VTVM of the wave form of scope to be maximum.

BAND

Step

Frequency

Adjust for

Adjustment

1

610KHz

Maximum sensitivity

T104, L105

2

1510KHz

Maximum sensitivity

C107

3

Repeat steps 1 and 2 several times.

AM

3. FM-RF ADJUSTMENT

Signal Generator ........................ Connect to FM ANT JACK (FM IN) through the dummy.

NO.

Frequency

Adjust for

Adjustment

1

90.10MHz

Maximum Sensitivity

L2, L5, L6

2

Repeat step 1 several times.

All manuals and user guides at all-guides.com

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Содержание MC-D90

Страница 1: ...to the circuit diagrams contained in this manual Parts marked with this sigh are critical components They must be replaced with identical components refer to the appropriate parts list and ensure exact replacement Parts of mark can be used only with the version designated J JAPAN US U S A C CANADA E EUROPE UK U K GE GENERAL EXPORT 9A08312000 All manuals and user guides at all guides com a l l g u ...

Страница 2: ...sponse 87 50 MHz to 108 00 MHz 100 kHz steps US 50 kHz steps EUR Signal to Noise Ratio Mono 65 dB Mono Stereo 56 dB Stereo AM Section Frequency Response 530 kHz to 1720 kHz US 10 kHz steps 522 kHz to 1620 kHz EUR 9 kHz steps Signal to Noise Ratio 35 dB CD PLAYER Section Signal to Noise Ratio 80 dB with IHF A Filter T H D 0 05 1 kHz 20 kHz LPF Channel Seperation 55 dB 1 kHz Channel Balance 1 dB Fre...

Страница 3: ...ATA CONTROL PORT STEREO IN CONTROL INPUT TUNED CONTROL INPUT PROTECTOR IN PORT KEY MATRIX PORTS GND A D CONVERTOR REFERENCE VOLTAGE BACK UP MODE CONTROL INPUT 32 768kHz SUB CLOCK CONNECTING PORT 8MHz CRYSTAL CONNECTING TERMINAL SYSTEM RESET PULSE INPUT REMOTE CONTROL SIGNAL INPUT REMOTE CONTROL SIGNAL INPUT REMOTE CONTROL SIGNAL INPUT SPEAKER ON OFF PORT PLL DATA CONTROL PORT TDA7318D DATA CONTROL...

Страница 4: ...TMP87PM78F CD 1 25 2 3 4 5 6 7 8 9 10 11 12 13 22 23 27 30 31 32 33 42 43 44 45 46 83 84 85 86 87 88 89 90 91 92 POWER SUPPLY 5V BUS for CD DATA BUS for CD DATA BUS for CD DATA BUS for CD DATA BUS for CD CLOCK BUS for CD CHIP ENABLE RESET for CD MUTE for CD SINGLE BUS for CD DATA GND 8MHz CRYSTAL CONNECTING TERMINAL SYSTEM RESET PLL DATA CONTROL PORT CD POWER ON OFF MECHANISM SW CONDITION I O I O ...

Страница 5: ...SERVICE MANUAL 5 PIN ASSIGNMENTS TOP VIEW PIN BLOCK DIAGRAM All manuals and user guides at all guides com ...

Страница 6: ...SERVICE MANUAL 6 IC11 TUNER LA1836M BLOCK DIAGRAM TDA7318D IC23 INPUT LC4966 All manuals and user guides at all guides com a l l g u i d e s c o m ...

Страница 7: ...tereo signal modulator Frequency counter Distortion analyser IMPORTANT 1 Check power source voltage 2 Set the function switch to band aligned 3 Keep the signal input as low as possible to adjust accurately 4 Modulation and modulation frequency Item Modulation Modulation frequency Band AM 30 400Hz FM 100 75KHz Dev 400Hz ADJUSTMENT POINT All manuals and user guides at all guides com ...

Страница 8: ...rough the loop antenna Adjust for the indication of VTVM of the wave form of scope to be maximum BAND Step Frequency Adjust for Adjustment 1 610KHz Maximum sensitivity T104 L105 2 1510KHz Maximum sensitivity C107 3 Repeat steps 1 and 2 several times AM 3 FM RF ADJUSTMENT Signal Generator Connect to FM ANT JACK FM IN through the dummy NO Frequency Adjust for Adjustment 1 90 10MHz Maximum Sensitivit...

Страница 9: ...00 10MHz Minimum T H D T103 3 Repeat steps 1 and 2 Several times 5 FM AM AUTO STOP LEVEL ADJUSTMENT FM SIGNAL GENERATOR Connect to FM ANT Jack FM IN through the dummy AM SIGNAL GENERATOR Connect to AM ANT Coil through the Loop antenna BAND STEP SIGNAL GENERATOR Adjust for Adjustment 1 100 1MHz 30dB Display OFF VR12 2 100 1MHz 30dB Display ON VR12 1 1000KHz 80dB Display OFF VR11 2 1000KHz 80dB Disp...

Страница 10: ...rted output for CH1 Input for CH1 Not biased inside Input reference voltage Under condition of VRI 1 8V internal bias circuit is shut off No signal input condition VRI VIN Output reference voltage VOUT VCI VCC VF 2 Input for CH2 Non inverted output for CH2 Supply terminal of output stage for CH2 Inverted output for CH2 Power GND Power GND Inverted output for CH3 Supply terminal of output stage for...

Страница 11: ... adder signal output terminal Focus error signal output terminal FE amp negative input terminal Reference voltage VREF output terminal VREF 2 1V when VCC 5V Track count signal output terminal RFRP detect circuit input terminal RF gain signal output terminal RF amplitude adjustment control signal input terminal Controlled by 3 PWM signal PWM carrier 88 2 kHz RF signal amplitude adjustment amp input...

Страница 12: ...SERVICE MANUAL 12 All manuals and user guides at all guides com ...

Страница 13: ...SERVICE MANUAL 13 All manuals and user guides at all guides com ...

Страница 14: ...SERVICE MANUAL 14 All manuals and user guides at all guides com ...

Страница 15: ...SERVICE MANUAL 15 All manuals and user guides at all guides com ...

Страница 16: ...SERVICE MANUAL 16 All manuals and user guides at all guides com a l l g u i d e s c o m ...

Страница 17: ...SERVICE MANUAL 17 18 All manuals and user guides at all guides com ...

Страница 18: ...19 20 All manuals and user guides at all guides com ...

Страница 19: ...21 22 All manuals and user guides at all guides com ...

Страница 20: ...23 24 SCHEMATIC DIAGRAM All manuals and user guides at all guides com ...

Страница 21: ...25 26 All manuals and user guides at all guides com a l l g u i d e s c o m ...

Страница 22: ...27 28 PRINTED CIRCUIT BOARDS All manuals and user guides at all guides com ...

Страница 23: ...29 30 All manuals and user guides at all guides com ...

Страница 24: ...SERVICE MANUAL 31 32 All manuals and user guides at all guides com ...

Страница 25: ...08561000 SPEAKER ASS Y LS H90A 9A01397000 ANTENNA TERMINAL T 60 KSA267 9A07871200 REMOCON TRANSMITTER ASS Y CARTCR H100TCCC 9A08523100 OWNER S MNL T C MC D90 CQX1A614Z 9A08046100 ADAPTOR 75 300 NTSC KLR1T201 9A08561100 AM LOOP ANTENNA ASS Y KSA3A012Z All manuals and user guides at all guides com ...

Страница 26: ...2 20 26 25 21 31 9 25 1 8 27 28 29 34 30 32 33 S4 x3 S1 S1 x2 X2 x4 S3 x8 x2 S10 S12 S2 x4 S7 x2 S12 x4 S3 S12 X6 x3 S11 S9 x2 x2 S6 S7 x4 x3 S5 S8 S13 x4 S1 x2 x2 S11 x8 S7 EXPLODED VIEW MC D90TC All manuals and user guides at all guides com a l l g u i d e s c o m ...

Страница 27: ...1 9A06327100 SUPPORT CUSHION KHG1A104 2 22 9A08214800 3CD MECHANISM MGC E6005 CJDMGCE6005 2 23 CD PCB 2 24 9A08215100 SUPPORT MECHA A CMH1A104 2 25 9A08215200 SUPPORT MECHA B CMH1A105 2 26 9A08220900 BRACKET PCB KMD1A405 2 27 9A08217100 CHASSIS BOTTOM CUA1A180 2 28 9A05963800 SUPPORT PCB KRE1A018 2 29 MAIN PCB 2 30 9A08563400 CABINET REAR CKD1A031Y 2 31 9A07873500 LOCKER TOP CMH1A088 2 32 9A067549...

Страница 28: ...SERVICE MANUAL 38 All manuals and user guides at all guides com ...

Страница 29: ...5330900 WAFER MOLEX 53014 KJP11GA19ZM CN91 92 9A05329100 WAFER MOLEX 5267 03A KJP03GA01ZM D 101 9A08163000 DIODE VARICAP HVDSVC342LT D 103 105 9A07887200 DIODE 1SS131M HVD1SS131MT D 201 202 9A07887200 DIODE 1SS131M HVD1SS131MT D 355 9A07887200 DIODE 1SS131M HVD1SS131MT D 361 364 9A07887200 DIODE 1SS131M HVD1SS131MT D 366 369 9A07887200 DIODE 1SS131M HVD1SS131MT D 501 9A06224900 DIODE BRIDGE PBU604...

Страница 30: ...908 909 9A07888600 T R KTD2058Y HVTKTD2058Y Q 911 9A07888200 T R KTA1274YT HVTKTA1274YT Q 915 9A01388300 TR KSD288 Y AB KVTKSD288Y Q 916 9A01388400 TR KSA614 Y KVTKSA614Y Q 917 918 9A07887800 TR DTC114YST HVTDTC114YST Q 920 9A07887700 TR DTA114YST HVTDTA114YST R 111 9A07895300 RES CARBON CRD20TJ331T CRD20TJ331T R 255 256 9A07901800 RES CARBON CRD20TJ4R7T CRD20TJ4R7T R 313 314 9A08216800 RES CARBON...

Страница 31: ...1RA223B01T VR13 9A08040600 RES SEMI FIXED 10K OHM KVN1RA103B01T WF21 9A07889800 CONNECTOR MOLEX35237 0610 KJP06GB99ZM WF22 9A08219900 CONNECTOR KJP11GB99ZM WF51 9A08219700 WAFER KJP05GB103ZM X 101 9A07491700 RESONATOR CERAMIC HVFZTB456F11 X 102 9A07491800 FILTER CERAMIC HVFLZU450C4N X 104 9A04874300 CRYSTAL DC D2100 KOX07200A200C X 361 9A05193000 CRYSTAL 08000E160C KOX08000E160C X 362 9A05188800 C...

Страница 32: ...600 I C REGULATOR HVIMC7805C L601 621 9A07886600 COIL AXAIL 10UH HLQ02C100KT Q601 9A07888100 T R TKTA1266YT HVTKTA1266YT Q602 9A07888500 TR KTD1302T HVTKTD1302T Q603 9A07887800 TR DTC114YST HVTDTC114YST RZ01 9A05337800 R NETWORK SN5X103J KRGSN5X103J X601 9A04275700 CRYSTAL 16 9344MHZ KOX16934A120F X602 9A05193000 CRYSTAL 08000E160C KOX08000E160C FRONT PCB ASS Y REF NO PARTS NO DESCRIPTION REMARKS ...

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