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Table of Contents
Related Manuals for Casio EV-500B
Summary of Contents for Casio EV-500B
- Page 1 (without price) EV-500B (KX-615) FEB. 1995 INDEX...
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Page 2: Table Of Contents
CONTENTS SPECIFICATIONS ..................2 BLOCK DIAGRAM ..................3 CIRCUIT DESCRIPTION ................4 ADJUSTMENT ....................5 TROUBLESHOOTING ................. 10 PRINTED CIRCUIT BOARDS ..............11 WIRING DIAGRAM ..................13 EXPLODED VIEW ..................14 ELECTRICAL PARTS LIST................. 15 MECHANICAL PARTS LIST ............... 21 IC AND TRANSISTOR LEAD IDENTIFICATION ........ -
Page 3: Specifications
SPECIFICATIONS Item Specification VHF: 2 ~ 13 ch UHF: 21 ~ 69 ch Reception channels Power voltage DC 6.0 V Power consumption Approx. 3.7 W Current consumption Approx. 617 mA Battery life (with alkaline batteries) Approx. 2.0 hours Batteries : 3 AA size batteries Power supply Car adaptor : CA-K65 AC adaptor : AD-K65... -
Page 4: Block Diagram
BLOCK DIAGRAM Antenna 3 IC200 1 TU200 2 Q200 4 IC600 Speaker Video VR600 Sound Det. Audio Tuner IF Amp. Amp. AFT Circuit Volume AGC Circuit Control IC270 IC300 Tuning Voltage Chroma Generator Circuit IC700 Display Control Auto-Tuning Control VCC2 (4.5 ± 0.02 V) VCC7 (25.9 ~ 31.3 V) Power VCC6 (10.8 ~ 12.0 V) -
Page 5: Circuit Description
CIRCUIT DESCRIPTION POWER SUPPLY Vcc1-1 L102 Vcc2-2 330u (3.9 V) D158 MA143A T100 CP100 Vcc7 (29.5 V) R160 LC12U-35 CP110 C146 Vcc6 (11 V) 220p Q110 2SD1819A-R D156 MA142WK CP111 Q111 Vcc2-1 (4.5 V) L101 2SD1119-R D100 C137 R107 100u D154 MA142WK CP113 MA142WK 33K... -
Page 6: Adjustment
ADJUSTMENT LINEAR PCB Items to Be Adjusted Item Measuring Instrument VCC2-1 voltage setting Voltmeter Video detection coil adjustment TV signal generator, pattern generator, oscilloscope, low-pass filter AFT coil adjustment Sweep generator, oscilloscope, voltmeter Contrast adjustment TV signal generator, pattern generator, oscilloscope Tint adjustment TV signal generator, pattern generator, oscilloscope AGC adjustment... - Page 7 Bottom View Equipment Connection / Adjustment Procedure VCC2-1 Voltage Setting EV-500 16-169 Voltmeter Output Input Input Input Output Output Adjust Result Connection Point Signal Connection Point Adjust to obtain a 4.50 ± 0.02 V VR100 Voltmeter reading on the voltmeter. —...
- Page 8 Video Detection Coil Adjustment * Desolder the IF pad to open. EV-500 Pattern Signal generator generator Oscilloscope Low-pass filter Input Output Input Input Input Output Output Adjust Result Connection Point Signal Connection Point Pattern Color bar generator Low-pass filter Adjust to obtain the minimum T200 45.75 MHz Oscilloscope...
- Page 9 BCC Adjustment * Desolder the IF pad to open. Pattern Signal EV-500 generator generator Oscilloscope Input Output CP339(VC) Input Input Input Output Output Adjust Result Connection Point Signal Connection Point Adjust VR301 so that the Pattern difference Pulse A Pulse B generator Color bar between pulses...
- Page 10 Vcom Adjustment * Place a photo diode on the middle of the display plate. Photo sensor amp. EV-500 Oscilloscope Photo Bandpass diode filter AV-C1 Audio/Video jack Input Input Input Output Output Adjust Result Connection Point Signal Connection Point Photo sensor amp.
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Page 11: Troubleshooting
TROUBLESHOOTING Symptom Cause Solution No power supply Defective power switch (SW100). Replace. No picture and Defective DC-DC converter (T100). Replace. no sound Defective tuner (TU200). Replace. Defective Q200. Replace. Defective IC200. Replace. Defective IC300. Replace. Defective IC270. Replace. Defective IC700. Replace. -
Page 12: Printed Circuit Boards
PRINTED CIRCUIT BOARDS TOP VIEWS Linear JK200 F200 C202 C225 C208 R212 R209 R222 R224 TU200 R230 C257 T201 T200 C120 C145 VR100 R105 C220 C112 C210 TM100 T100 R758 L102 C116 Q750 C100 SW100 C114... - Page 13 BOTTOM VIEWS Linear C242 CP224 R203 C240 R205 R202 R208 C246 C236 CP204CP200 CP206 Q200 R201 CP207 CP221 CP210CP209CP208 R211 C233 VR200 IC200 C232 C231 C200 R270 R276 CP211 IC270 Q270 R277 R239 R241 R225 Q272 C261 C263 C271 CP110 C137 R115 C140...
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Page 14: Wiring Diagram
WIRING DIAGRAM TOP VIEWS Linear PCB JK200 F200 C202 C225 C208 R212 R209 R222 R224 TU200 R230 C257 T201 T200 C120 C145 VR100 R105 C220 C210 C112 TM100 T100 R758 L102 C116 Q750 SW100 C100 C114 L101... -
Page 15: Exploded View
EXPLODED VIEW 17-1 — 14 —... -
Page 16: Electrical Parts List
ELECTRICAL PARTS LIST Linear PCB No. 1 FOB Japan Item Code No. Parts Name Specification N.R.Yen Unit Price Capacitors C100 2800 9175 Electrolytic capacitor (V) 6.3RC2-220MS 1 20 C105 2845 4802 Chip capacitor EMK316F225Z-T 1 20 C110 2806 9329 Electrolytic capacitor (V) 25RC2-10MS 1 20 C112... - Page 17 Linear PCB No. 2 FOB Japan Item Code No. Parts Name Specification N.R.Yen Unit Price C360 2897 0196 Chip capacitor GR40CH560J50PT 1 20 C361 2897 0112 Chip capacitor GR40W5R562K50PT 1 20 C362 2897 0952 Chip capacitor GR40W5R153K50PT 1 20 C363 2897 0525 Chip capacitor GR40CH151J50PT 1 20...
- Page 18 Linear PCB No. 3 FOB Japan Item Code No. Parts Name Specification N.R.Yen Unit Price IC300 2114 3633 Linear IC IR3P90Y-1 IC600 2114 2464 Linear IC NJM2070M-T1 IC700 2011 8337 LSI MSM6770GS-VK-675-F IC701 2114 3458 IC S-81230SG-QB-T1 1 10 Jacks JK100 3501 8281 Jack HEC0811-010010...
- Page 19 Linear PCB No. 4 FOB Japan Item Code No. Parts Name Specification N.R.Yen Unit Price R224 2791 0815 Chip resistor ERJ-6GEYJ102V 1 20 R225 2791 0599 Chip resistor ERJ-6GEYJ822V 1 20 R229 2791 1170 Chip resistor ERJ-6GEYJ182V 1 20 R230 2791 0704 Chip resistor ERJ-6GEYJ561V 1 20...
- Page 20 Linear PCB No. 5 FOB Japan Item Code No. Parts Name Specification N.R.Yen Unit Price R703 2791 0305 Chip resistor ERJ-6GEYJ472V 1 20 R704 2791 0313 Chip resistor ERJ-6GEYJ103V 1 20 R705 2791 0305 Chip resistor ERJ-6GEYJ472V 1 20 R706 2791 0305 Chip resistor ERJ-6GEYJ472V 1 20...
- Page 21 BL PCB FOB Japan Item Code No. Parts Name Specification N.R.Yen Unit Price Capacitors C925 2825 0392 TF capacitor ECQ-V1H154JL 1 20 C927 2813 3213 Ceramic capacitor DE0405SL270J2K 1 20 Coil L950 3013 0756 Choke coil RCH-875-101K Connectors CN702 3501 7182 Connector 52287-0411 1 20 CN950...
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Page 22: Mechanical Parts List
MECHANICAL PARTS LIST FOB Japan Item Code No. Parts Name Specification N.R.Yen Unit Price 6609 8990 Display plate BXM-K615 K440169-1 6609 9365 Upper case ass'y K340219*1 6609 9040 Upper cover B-K615 K240130-1 6609 9080 Adhesive tape A-K615 K440178-1 1 20 6020 7658 Battery spring B1 G513 P408A-1 1 20... -
Page 23: Ic And Transistor Lead Identification
IC AND TRANSISTOR LEAD IDENTIFICATION IC/LSI IC200 IC270 M51348FP BA10358F IF AGC OUT IF AGC ADJ OUT1 IF AGC IN SyOUT –IN1 OUT2 RF AGC SyIN +IN1 IN2– AGCDL AFTC IN2+ VCCv IFIN IC600 NJM2070M IFIN VIDEO GNDv VCCs SIFOUT SIFIN –IN GNDs... - Page 24 IC700 MSM6770GS TU PWM VBAR TSI6 UBAR TSI5 TSI4 VMUTEB TSI3 GRES GPCK CSYNC GSRT AFTO VDD3 HCNT VSS2 VSS3 TRANSISTORS 2SD1119 2SB1218A 2SC4238 2SD1119 2SD601A 2SB709A 2SD1819A 2SD1149-S 2SC4238 DTC144EUW — 23 —...
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Page 25: Schematic Diagrams
SCHEMATIC DIAGRAMS LINEAR IF Pad Notes: 1. All resistance values are indicated in "ohms" (k=10 ohms, M=10 ohms). µF). 2. All capacitance values are indicated in "µF" (p=10 3. All inductance values are indicated in "µH." — 24 —... - Page 26 Notes: 1. All resistance values are indicated in "ohms" (k=10 ohms, M=10 ohms). µF). 2. All capacitance values are indicated in "µF" (p=10 3. All inductance values are indicated in "µH." — 25 —...
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Page 27: Waveforms
WAVEFORMS 63.5 µs 63.5 µs 63.5 µs 1 Q200 collector 2 IC300 pin 20 3 IC200 pins 19, 20 63.5 µs 63.5 µs 63.5 µs 5 IC300 pins 32, 34, 36 6 IC300 pin 21 4 IC200 pin 18 125 µs 12 µs 12 µs 7 IC300 pin 39... - Page 28 63.5 µs 125 µs F IC700 pin 7 G IC300 pin 30 — 27 —...
- Page 29 8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160, Japan Telephone: 03-3347-4926...