Casio CD-350S Service Manual Download Page 8

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TUNER

General Remarks

• When aligning the range and adjusting tracking, proceed with alignment in a sequence of AM--FM.
• Use a screwdriver with a plastic grip for all alignments.

Equipment Required

• AM signal generator (AM SG)
• Loop antenna

• Output meter
• Oscilloscope
• FM signal generator (FM SG)

• Screwdriver (Plastic type)
• Dummy load 32 ohm

AM SG

Set

GND

60 cm

Bar

Antenna

Output meter

Oscilloscope

Headphone jack

Dummy load 32 ohm

MW Alignment (Figures 5)

AM IF Alignment (Figures 5)

Step

Alignment

IF calibration

Tuning dial

setting

999 KHz/

1000 KHz

Remarks

Obtain sine-wave and
maximum amplitude

Frequency of

signal generator

450 KHz

Adjustment

T102

Max.

Step

Alignment

Tuning range

calibration

Adjustment of
tracking

Tuning dial

setting

Low end

High end

600 KHz/

612 KHz

1400 KHz/

1404 KHz

Remarks

Confirm : 1.4 V

0.05 V

Confirm : 7.5 V

0.4 V

Obtain sine-wave and
maximum amplitude

Frequency of

signal generator

522/530 KHz

1620/1710 KHz

600/612 KHz

1404/1400 KHz

Adjustment

T102

—

MW COIL

(Bar Antenna)

CT103

Repeat the above adjustment

Figure 5

Summary of Contents for CD-350S

Page 1: ...SYSTEM CD 350S AUG 2001 Model B USA Model C EU Model G Argentina Model E Other Countries POWER BAND PLAY REC REW FWO EJECT PAUSE STOP MEMORY REPEAT PRESET RANDOM REMAIN MULTI FUNCTION DISPLAY COMPACT DIGITAL AUDIO ...

Page 2: ...CONTENTS SPECIFICATIONS 1 BLOCK DIAGRAMS 2 ADJUSTMENTS 4 CASSETTE MECHANISM 4 TUNER 6 CD TROUBLESHOOTING 8 PCB LAYOUT 18 WIRING DIAGRAMS 20 SCHEMATIC DIAGRAMS 21 EXPLODED VIEWS 23 PARTS LIST 26 ...

Page 3: ...ADIO Frequency range AM 530 1710 kHz FM 87 5 108 MHz Antenna AM Ferrite bar antenna FM Telescopic antenna TAPE Tape speed 4 75 cm sec Track format 4 track stereo Wow and flutter 0 2 WRMS S N ratio 35 dB GENERAL Power consumption AC 18 W Output power 1 3 W 1 3 W 10 THD Speaker 102 mm 8 ohms 2 Dimensions 395 175 175 mm WMD Weight 3 6 kg with batteries Accessories AC power cord User s guide Specifica...

Page 4: ...OWER ON OFF 12V Q402 REGULATOR Q903 5V DIGITAL SIGNAL PROCESSOR IC901 TC9284BF U COM IC701 TC9314F 043 LCD DISPLAY X901 16 9344MHz CF701 75KHz TO AUDIO AMP BLOCK KEY CONTROL DOOR SWITCH SLT SWITCH DISC MOTOR SLED MOTOR DISC CN901 CN702 CN902 PICKUP MUTE LAMP CD VCC1 TUNER TAPE GND VCC2 TO AUDIO AMP BLOCK 5V LAMP CONTROL Q406 MOTOR AND ACTUATOR DRIVER IC903 SIGNAL SERVO AMP IC902 LASER DRIVER Q901 ...

Page 5: ... POWER AMP IC301 LA4227 R SPEAKER PHONES REGULATOR 5V Q207 REC PLAY SWITCH TAPE MUTE Q201 Q202 FUNCTION SWITCH SW301 RECTIFIER D1101 D1104 IN4001 POWER TRANSFORMER BATTERY UM 1X8 DC 12V AC SOCKET SWITCH CN202 CN203 LAMP MUTE TU R L CH VCC1 CD TUNER TAPE GND VCC2 5V R P R CH R P HEAD L CH CN201 ...

Page 6: ...oistened with denatured alcohol Grease stains may cause trouble Never use a magnetized screwdriver for head adjustment Equipment Required Oscilloscope Frequency counter Screwdriver Plastic type Test tapes MTT 113C TEAAC or TCC 111N TEAC Head Azimuth Adjustment Figures 1 and 2 Set Headphone jack Note Mode Switch is X Y position B A Step 1 Setting Play the test tape 8 KHz Position MTT 113C Adjust Az...

Page 7: ...ent Figures 3 and 4 Step 1 Setting Play the test tape MTT 111N Adjust Motor screw Figure 4 Result Frequency counter reading should be 3000 Hz 2940 3060 Figure 3 Frequency Counter SET Headphone Jack 3000 Figure 4 Motor Screw ...

Page 8: ...m MW Alignment Figures 5 AM IF Alignment Figures 5 Step Alignment IF calibration Tuning dial setting 999 KHz 1000 KHz Remarks Obtain sine wave and maximum amplitude Frequency of signal generator 450 KHz Adjustment T102 Max Max Step 1 2 1 2 3 Alignment Tuning range calibration Adjustment of tracking Tuning dial setting Low end High end 600 KHz 612 KHz 1400 KHz 1404 KHz Remarks Confirm 1 4 V 0 05 V ...

Page 9: ...ange calibration Adjustment of tracking Tuning dial setting Low end High end 90 1 MHz 106 1 MHz Remarks Confirm 20 V 0 1 V Confirm 6 5 V 0 2 V Obtain sine wave and maximum amplitude Frequency of signal generator 87 5 MHz 108 MHz 90 1 MHz 106 1 MHz Adjustment L103 L102 CT101 Repeat the above adjustment FM SG GND FM ANT R2 R1 FM GND Output meter Oscilloscope Headphone jack Dummy load 32 ohm R1 Outpu...

Page 10: ...00 display on LCD Is total track number displayed Is the audio signal present at the output terminals Can a selected music be searched smoothly No See page9 No No No 1 2 3 4 Yes Yes Yes Yes Load a disc and close the CD door Press button Press or button OK See page17 See page16 See page9 ...

Page 11: ...ck pulse appear at pin 78 79 of IC901 No l Check Q903 l Check pins 26 and 58 59 77 of IC901 No l Check X901 l Check circuit around X901 and IC901 Yes Yes l Check soldering and circuit around IC901 l Check LCD l Check wire connector 2 How long does it take until 00 00 00 is displayed after the CD door has closed Less than 16 sec More than 16 sec A B See page10 See page13 1 0 Vp p 1 5 Vp p Figure 7 ...

Page 12: ... l Check wire connector from pickup l Check circuit around pins 1 5 and 46 48 of IC902 l Check circuit around pins 30 42 of IC902 l Check circuit around IC901 IC902 and IC903 See page12 See page11 Figure 8 Figure 9 1 5 V 1 5 V 2 A Note Open the CD door and set the door switch for on position Check the radiation power with an optical power meter or by watching the radiation through the lens or the ...

Page 13: ...n in figure 10 No l Check Q901 No l Check circuit around IC901 and IC902 SEL Yes Is waveform at base of Q901 like that shown in figure 11 No l Check circuit around pins 21 and 45 of IC901 Yes Yes l Check contact 15P flat cable l Check pickup GND GND 2 5 V 0 V 3 V 0 V Figure 10 Figure 11 ...

Page 14: ...und Q403 No l Check circuit around pin 16 FSO of IC902 l IC902 is defective Yes Is waveform at pins 21 to 23 of IC903 like that shown in figure 13 Yes l Check circuit around pins 20 23 of IC903 Yes Yes l Check 15P flat cable l Check focus coil of pickup DC resistance 8 Ω Vref 0 2 V Vref 2 5 V Figure 12 Figure 13 ...

Page 15: ...figure 14 Is waveform at pins 14 to 16 of IC903 like that shown in figure 15 l Check circuit around pin 24 of IC902 l Check circuit around pins 14 to 16 of IC903 l IC902 is defective Yes Yes l Check sled motor DC resistance 12 Ω l Check wire connector B1 See page14 Vref 4 V Vref 4 V Figure 14 Figure 15 ...

Page 16: ... motor operate normally B3 Yes Is waveform at pin 26 FMSO of IC902 like that shown in figure 17 No Is waveform at pins 9 to 11 of IC903 like that shown in figure 18 No No Yes Yes l Check disc motor DC resistance 12 Ω l Check wire connector l Check operation of gear l Check circuit around pin 26 FMSO of IC902 l Check circuit around pins 9 and 11 of IC903 l IC902 is defective See page15 GND 5 V Vref...

Page 17: ...of IC902 l Check circuit around pins 1 5 of IC903 l IC902 is defective l Check flat cable l Check tracking coil of pickup DC resistance 8Ω No No No Is waveform at pin 35 TSO of IC902 like that shown in figure 20 Yes B3 Is waveform at pin 1 RFO of IC902 like that shown in figure 19 No l Check circuit around pins 1 5 and 41 44 of IC902 1 5 Figure 19 Figure 20 0 1 1 5 Figure 21 Figure 22 ...

Page 18: ... 16 3 No present at R939 R ch and R940 L ch audio signal 3 Does audio signal appear at pins 1 and 8 of IC904 No Yes l Check pins 1 7 of IC901 l Check circuit around pins 1 8 of IC904 ...

Page 19: ... that shown in figure 25 Yes l Check R SKIP and F SKIP l Check wire connector CN902 l Check pins 29 and 36 37 of IC701 l Check voltage of IC903 l Check flat cable Press the play key PAUSE l Check 100mV PP waveform at pins 3 and 8 of CN901 l Check pins 4 and 5 of IC901 l Check pickup Yes l Check gear and mechanism of sled motor l Check lens of pickup Press the or key Figure 23 Figure 24 Figure 25 V...

Page 20: ...2 R980 R981 D504 C952 C951 C950 IC901 D503 L701 C986 GND Y Y X X B A CF701 C702 C701 FM DSC D701 CN103 CN706 RANDOM P L A Y P A U S E K BAND C705 Q118 STOP A C128 C132 R180 Q116 R175 R174 Q102 IC102 C155 C131 C715 R996 R408 C716 R404 R995 R160 Q910 Q403 Q404 Q405 R406 R709 C988 D902 C941 Q903 C918 C959 R961 R962 C917 IC902 C901 JP944 JP951 JP934 JP931 R990 R966 R963 R965 C902 C960 C914 C964 C926 C...

Page 21: ... D203 C225 C244 R234 D214 R232 R254 Q205 C226 R221 R247 C236 C221 C237 R222 C234 R227 R226 R225 D207 JP301 R246 R412 C403 D202 C212 R411 DC FUSE1101 T 1 6A L250V C1105 C1103 D1103 D1101 C1104 C1106 D1104 D1102 GND AC IN AC IN LAMP SW C804 R801 R249 E B C Q801 R206 R802 R252 C216 C803 R219 C205 JP310 R220 C204 R211 C207 C231 R218 C214 C239 R212 C802 C233 C213 R217 IC201 C211 C215 R216 C209 Q202 Q20...

Page 22: ...3 CN101 JP4 JP3 JP105 D718 R176 R179 C711 C717 R178 R738 JP173 JP5 JP706 R708 C713 Q703 Q402 Q907 R403 R161 R410 R939 R940 R413 R250 C169 Q401 Q408 Q908 R955 R956 R958 R960 R959 R712 R979 R976 C977 D705 C719 C972 DM DM SLT GND FM FM F F LD PD A D E COM T T LG UR C F B C975 C984 R997 D711 JP972 JP912 JP911 JP915 JP910 JP708 JP919 JP920 JP709 D715 D716 R742 C969 U D D714 REPEAT MEMORY F SKIP R SKIP ...

Page 23: ...D SBOK TEST5 TEST4 TEST3 GNDA LO LO VDA RO RO GNDA 2VREL SEL FCS1 FKIC FEL2 FEL1 FEI TESH TEOF SBAD DFCT FMSO FMSN FMSP THLD TS2O TS2N TS2P TS1N TS1P TS0 TEL1 TEL2 TSN FEL2 FSO FSN COSC OSC1 GND VCC SEL DMEP RF GND FM RFout FM RFin AM LOW CUT MIX OUT V CC AM IF IN FM IF IN GND AGC QUAD R OUT L OUT RF V CC AM RFin FM OSC AM OSC OSC OUT ST LED IF REQ DET OUT DET IN LPF1 LPF2 DMEN DMEO RFN TEST5 TPO ...

Page 24: ...307 500P R303 560 R307 2K2 R302 4K7 R308 2K2 R301 4K7 R311 2K2 R312 10K R305 150 R306 150 C320 10U 16 R240 2K2 C232 220U C214 100U C204 222M C215 223 D202 IN4148 D213 IN4148 D206 6V8 DC 12V DC AC 1 3 2 1 3 2 1 3 2 D210 IN4148 D302 IN4148 D212 IN4148 D209 IN4148 D204 IN4148 D203 IN4148 D201 IN4148 D207 6V8 C234 100U C403 470U C1102 222 C1104 104 C1106 104 LSW D1102 IN4001 D1104 IN4001 C1103 104 R31...

Page 25: ... 23 27 6 1 5 26 25 9 2 28 3 10 13 11 12 EXPLODED VIEWS ...

Page 26: ... 24 17 14 18 16 4 16 5 16 6 16 1 16 2 16 3 14 4 15 7 ...

Page 27: ... 25 21 21 21 22 19 20 23 24 8 21 ...

Page 28: ...and specifications are subject to change without pointer notice 2 As for spare parts order and supply refer to the GUIDEBOOK for Spare parts Supply published separately 3 The numbers in item column correspond to the same numbers in drawing ...

Page 29: ... 011 0 00 0 1 0 0 A 5 9482 1375 PCB ASSY MAIN 2478 012 0 00 0 0 1 0 A 5 9482 1376 PCB ASSY MAIN 2478 013 0 00 0 0 0 1 A 6 9482 1377 PCB ASSY TUNER 2478 004 0 00 1 0 0 0 B 6 9482 1378 PCB ASSY TUNER 2478 001 0 00 0 1 0 0 B 6 9482 1379 PCB ASSY TUNER 2478 002 0 00 0 0 1 0 B 6 9482 1380 PCB ASSY TUNER 2478 003 0 00 0 0 0 1 B 7 9482 1381 UNIT FRONT CABINET 2478 080 0 01 1 1 1 1 C 8 9482 1382 UNIT TOP ...

Page 30: ... MECHA 500 991110 000 1 1 1 1 X 23 9482 1405 CD DOOR LOCK CD7288 872 846000 000 1 1 1 1 C 24 9482 1406 KNOB CD DOOR 572 850052 000 1 1 1 1 X BACK CABINET UNIT 25 9482 1407 ROD ANTENNA TA 26295 CD7 155 848026 295 1 1 1 1 C 26 9482 1408 HANDLE 582 705052 000 1 1 1 1 X 27 9482 1409 BACK CABINET 582 9020S3 080 1 1 1 1 C ACCESSORY 28 9482 1315 AC CORD SPT 2 18 2C 151 117117 302 1 0 0 0 C 28 9482 1316 A...

Page 31: ...CASIO TECHNO CO LTD Overseas Service Division Nishi Shinjuku Kimuraya Bldg 1F 5 25 Nishi Shinjuku 7 Chome Shinjuku ku Tokyo 160 0023 Japan ...

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