Casio EV-2500B Service Manual & Parts List Download Page 14

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R500

C535

C536

L500

D500

C202

D520

F203

F200

R214

R210

C247

VR200

R246

R223

R236

C259

R238

R239

C246

R222

C250

R226

R225

R224

R230

C257 R229

R227

R240

T201

T200

C791

R770

C793

C792

L790

C750

L761

L760 R717

C744

Q760

R739

R715

R716

R741

R731

C771

C746

C751

R740

R706

R704

R775

C710

R776

Q710

C773

C770

R749

VR740

C772

C630

R610

R600

C631

R601

R611

R602

C635

R606

R607

C512

C511

Q515

Q951

R951

Q950

R950

C930

R160

D158

C146

D156

D154

Q111

C145

R110

R108

Q110

R115

C140

R107

C137

Q101

C105

D110

VR100

D100

R100

TM100

R105

C181

R645

R390

R391

Q390

C357

R300

R301

VR300

L302

L310

C384

R334

R392

R331

R333

R335

C265

R243

R242

C305

R304

L301

R310 C354

C201

C380

R313

R315

R321

R320

VR301

R323

R322

C372

C310

R324

VR303

R350

R351

R325

Q516

R515

Q513

H300

C510

C208

C207

C205

TU200

Q510

R535

618B-L-B

R353

R352

FU100

R537

C532

R501

C531

PRINTED CIRCUIT BOARDS

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Summary of Contents for EV-2500B

Page 1: ...R with price EV 2500B KX 618 MAY 1995 INDEX...

Page 2: ...DESCRIPTION 4 DISASSEMBLY 5 DIAL STRINGING DIAGRAM 6 ADJUSTMENT 7 TROUBLESHOOTING 12 PRINTED CIRCUIT BOARDS 13 EXPLODED VIEW 15 ELECTRICAL PARTS LIST 16 MECHANICAL PARTS LIST 23 IC AND TRANSISTOR LEAD...

Page 3: ...batteries 6 Power supply Car adaptor CA K65 AC adaptor AD K65 64 Earphone jack 3 5 mini 7 Connection terminals External power jack 6 0 V DC IN External antennea jack 3 5 mini Audio Video jack 3 5 8 Sc...

Page 4: ...600 NJM2070M Sound amplification 5 Chroma circuit IC300 IR3P90Y Generates the tricolor red green and blue from the video signal 6 Display control Auto tuning control IC700 MSM6770GS Controls the displ...

Page 5: ...D1819A R Q111 2SD1119 R C137 R107 D100 MA141K 33K B6800p C140 CH470p R115 100 6 3 V 220 C100 D110 MA3051 L 2 2 BH102K TM100 Q101 2SD1819A R 2 2K R113 R105 3 3K VR100 2K C105 C145 B1500p CP106 1 2 9 6...

Page 6: ...5 DISASSEMBLY 1 Remove the battery case 2 Remove the three screws and the lower case 3 Remove the three knobs 4 Remove the screw and resolder the two wires for the speaker 5 Remove the PCB ass y...

Page 7: ...6 DIAL STRINGING DIAGRAM 9 2 1 0 3 8 4 A 5 7 6 Turn the pulley counterclockwise Wrap around 4 times 0 8 mm Sliding pointer...

Page 8: ...ustment TV signal generator pattern generator oscilloscope Tint adjustment TV signal generator pattern generator oscilloscope AGC adjustment TV signal generator pattern generator IF levelmeter Vcom ad...

Page 9: ...nection Point Adjust Result Adjust to obtain a 4 50 0 02 V reading on the voltmeter Voltmeter VR100 TP1 TP1 16 169 Equipment Connection Adjustment Procedure Output Voltmeter EV 2500 set TP7 CP204 TP2...

Page 10: ...tput Connection Point Signal Connection Point Adjust Result Desolder the IF pad to open Voltmeter Oscilloscope Sweep generator Pattern generator Signal generator Input TP2 CP312 KILLER Oscilloscope Vc...

Page 11: ...rator EV 2500 set IF levelmeter Input TP7 Output TP2 Short the IF pad Pattern generator TV signal generator TP7 VR200 IF levelmeter TP2 Color bar 65 5 dB Adjust to obtain a 84 2 dB reading on the IF l...

Page 12: ...Oscilloscope Photo sensor amp Adjust to obtain the minimum ripple VR303 Photo sensor amp Bandpass filter Oscilloscope Free Running Frequency Adjustment Frequency counter VR740 TP6 Output TP6 Adjust to...

Page 13: ...eplace Defective IC200 Replace Defective IC300 Replace Defective IC270 Replace Defective IC700 Replace Defective F201 Replace Defective IC200 Replace Defective IC600 Replace Defective phone jack JK600...

Page 14: ...C631 R601 R611 R602 C635 R606 R607 C512 C511 Q515 Q951 R951 Q950 R950 C930 R160 D158 C146 D156 D154 Q111 C145 R110 R108 Q110 R115 C140 R107 C137 Q101 C105 D110 VR100 D100 R100 TM100 R105 C181 R645 R3...

Page 15: ...JK200 CP209 C530 CN500 CP200 CP204 R209 CP207 CP208 CP210 CP206 CP203 CP201 R201 C237 R202 C236 C233 R207 C232 C231 C200 C234 C230 Q201 R276 R270 R759 Q750 C794 Q270 Q272 C270 R271 R272 IC270 C271 R72...

Page 16: ...7 7 6 10 11 12 47 8 9 6 23 22 50 7 10 24 25 6 25 5 19 48 25 48 25 2 25 1 25 3 25 4 33 2 33 33 1 34 35 48 28 18 21 51 49 27 33 3 26 2 26 1 26 51 26 3 26 4 26 7 26 6 26 5 28 1 28 2 28 3 28 4 31 34 32 28...

Page 17: ...103Z50PT 1 20 9 C C234 2892 0040 Chip capacitor GR40Y5V104Z25PT 1 20 14 C C236 2892 0059 Chip capacitor GR40Y5V103Z50PT 1 20 9 C C237 2892 0059 Chip capacitor GR40Y5V103Z50PT 1 20 9 C C239 2892 0270 C...

Page 18: ...apacitor GR40Y5V103Z50PT 1 20 9 C C384 2892 0059 Chip capacitor GR40Y5V103Z50PT 1 20 9 C N C390 2806 9448 Electrolytic capacitor V 6 3RC2BP 22 1 20 20 C C510 2806 9469 Electrolytic capacitor V 6 3RC2...

Page 19: ...ilters F200 3025 0182 SAW filter SAF45MA60Z 1 1 140 C F201 3025 0714 SIF filter SFSL4 5MDB12 1 10 33 C F202 3851 1057 Ceramic discriminator CDSL4 5MC30C12 1 10 42 C F203 3850 1259 SIF trap TPS4 5MB 1...

Page 20: ...DTA114TUWT106 1 20 10 C Q710 2253 0133 Chip transistor 2SD1819A R TX 1 20 12 C Q750 2251 0189 Chip transistor 2SB1218A R TX 1 20 10 C Q760 2251 0189 Chip transistor 2SB1218A R TX 1 20 10 C Q950 2253...

Page 21: ...5V 1 20 4 C R311 2791 1131 Chip resistor ERJ 6GEYJ271V 1 20 3 C R313 2797 2114 Chip resistor ERJ 6GEYF333V 1 20 4 C R314 2797 1533 Chip resistor ERJ 6GEYF473V 1 20 5 C R315 2797 1218 Chip resistor ERJ...

Page 22: ...472V 1 20 3 C R732 2791 0815 Chip resistor ERJ 6GEYJ102V 1 20 5 C R733 2791 0815 Chip resistor ERJ 6GEYJ102V 1 20 5 C R734 2791 0305 Chip resistor ERJ 6GEYJ472V 1 20 3 C R736 2791 0305 Chip resistor E...

Page 23: ...6 C Tuner TU200 1013 5511 Tuner TEPU5 02 1 1 760 C Variable resistors VR100 2775 1799 Chip semi fixed resistor POZ3AN 1 202N T00 1 20 17 C VR200 2775 1813 Chip semi fixed resistor POZ3AN 1 203N T00 1...

Page 24: ...09 8900 Reflector K618 K340092 1 1 10 38 X N 23 6609 8910 Reflection tape A K618 K440195 1 1 20 12 X N 24 3851 1596 Fluorescent lamp HMES48B25W64C X 1 1 280 C N 25 6610 0948 Display ass y K340182 1 1...

Page 25: ...A K618 K140042 2 1 1 120 C 39 6606 4700 Blind B K603 K410877 1 1 20 7 X N 40 6609 8780 Battery spring D K618 K440143 1 1 5 54 X N 41 6609 8770 Battery spring C K618 K440142 1 1 5 54 X N 42 3851 1589...

Page 26: ...6 OUT GND 4 5 GND IC600 NJM2070M IC701 S 81230SG GND 1 5 NC VIN 2 OUT 3 4 NC IC300 IR3P90Y 1 8 2 7 3 6 4 5 NC 37 24 KILLER F RGB AMP 38 23 PICTURE FRP 39 22 TIME CONST RGB INV 40 21 SYNC IN B SUB BRI...

Page 27: ...T SRT OE HCNT CLR VLB TU PWM UHF VBAR UBAR SW VMUTEB FRP HDB CSYNC AFTO VDD3 TUO VSS3 AMUTEB AFTI KDB KCB VDB M5 M6 VDD1 MBUF VSS2 SYF AVB M1 M2 VL1 VH1 V1 VREF OSC ADJ VDD1 PD VCO VSS1 VDD2 TSI1 TSI2...

Page 28: ...resistance values are indicated in ohms k 103 ohms M 106 ohms 2 All capacitance values are indicated in F p 10 6 F 3 All inductance values are indicated in H 3 TP7 TP2 1 IF Pad TP3 TP4 4 2 9 8 TP1 12...

Page 29: ...28 RADIO Notes 1 All resistance values are indicated in ohms k 103 ohms M 106 ohms 2 All capacitance values are indicated in F p 10 6 F 3 All inductance values are indicated in H To TV...

Page 30: ...0 V 4 IC200 pin 18 63 5 s 4 0 V 5 IC300 pins 32 34 36 63 5 s 4 4 V 6 IC300 pin 21 125 s 4 4 V 7 IC300 pin 39 10 s 2 0 V 8 Q111 base 10 s 10 V 9 Q111 collector 63 5 s 2 8 V 0 IC700 pin 1 125 s 2 8 V A...

Page 31: ...29 125 s 5 V G IC300 pin 30 4 5 V 63 5 s F IC700 pin 7...

Page 32: ...8 11 10 Nishi Shinjuku Shinjuku ku Tokyo 160 Japan Telephone 03 3347 4926...

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Casio EV-2500B, Service Manual & Parts List

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