Casio SY-20B Service Manual Download Page 15 | Manualshive

Page: 15 / 19

Casio SY-20B Service Manual Download Page 15

— 13 —

SCHEMATIC DIAGRAMS

LINEAR

Antenna

External

Antenna
Jack

IF Detection Circuit

Audio Amplifier Circuit

Earphone
Jack

Speaker

Tunner

Power Switch

Display Controller Circuit

A/V Jack

AC Jack

Tuning Voltage Generator Circuit

Power Supply Circuit

36.0 ~ 44.0 V

-4.50 ~ -6.00 V

4.00

±

0.02 V

Display Generator Voltage Circuit

Chroma Circuit

«
...
13
14
15
16
17
...
»

Summary of Contents for SY-20B

Page 1: ...SY 20B KX 529B R MAY 2000 SY 20B without price INDEX...

Page 2: ...CONTENTS SPECIFICATIONS 1 BLOCK DIAGRAM 2 ADJUSTMENT 3 PRINT CIRCUIT BOARDS 8 EXPLODED VIEW 10 PARTS LIST 11 SCHEMATIC DIAGRAMS 13 DRIP PROOF PERFORMANCE Q A 15...

Page 3: ...HF 8 Speaker 1 2 16 inches 28 mm X1 9 Connection Terminals External antenna jack 3 5 mini Earphone jack 3 5 mini External power source jack DC 6V Audio Video input jack 3 5 mini 10 Power Supply 3 way...

Page 4: ...Vcc2 4V Vcc2 4 0V Vcc7 40V VEE1 5V AFT A MUTE EAR PHONE EXTERNAL ANT BATTERY 1 5V x 4 AC ADAPTOR 6V EXTERNAL VIDEO EXTERNAL AUDIO BV BS U V BT CN900 Vcc2 8 GND KDB SP SP CN701 CN950 CN700 Vcc2 TUNER...

Page 5: ...ing frequency adjustment 4 Contrast adjustment 5 TINT adjustment Preparations 1 Connect AVB CP725 to GND 2 Set SW100 on UHF mode Adjustment And Test Point Locations Top View Bottom View T 200 VR 300 V...

Page 6: ...ll gain P S 10 dB 3 Other conditions US IF Input electric field terminated with 75 resistance Power supply Vcc1 1 CP101 5 00 0 05 V Adjustment Monitor video detection signal CP238 via a low pass filte...

Page 7: ...ield with 75 termination Connect SYF terminal CP729 and Vcc2 7 CP701 Power supply Vcc1 1 CP101 5 00 0 05 V Room temperature 20 10 C Adjustment Monitoring HDB CP305 with a frequency counter adjust VR70...

Page 8: ...djustment 1 Connect color terminal CP320 to GND CP300 so that screen becomes black and white 2 Adjust contrast pot VR300 so that the voltage between pedestal level and white level of B signal CP740 is...

Page 9: ...sistance Power suppiy Vcc1 1 CP101 5 00 0 05 V Adjustment Observing B output signal CP740 with an oscilloscope adjust TINT pot VR301 so that amplitude difference between two center pulses is 0 1 V Cau...

Page 10: ...8 PRINTED CIRCUIT BOARDS TOP VIEWS Linear Connector...

Page 11: ...9 BOTTOM VIEWS Linear Connector...

Page 12: ...10 1 2 4 5 6 7 8 9 10 11 12 13 20 14 18 19 33 34 37 35 36 54 55 39 38 48 50 51 52 53 49 48 47 46 44 43 45 42 41 40 23 24 23 21 22 15 4 17 30 31 16 8 3 32 29 28 27 56 26 25 26 EXPLODED VIEW TV UNIT...

Page 13: ...430 SCREW K440305 1 4 AA X 23 6604 3110 SCREW K41310 1 4 AA X N 24 1002 3127 PCB ASSY SWITCH K442206 2 1 BB B N 25 1002 2691 CUSHION K442245 1 2 AA X N 26 1002 2694 CUSHION K442245 2 2 AA 27 2725 1363...

Page 14: ...K 1 AB X F230 3850 1259 TRAP SIF TPS4 5MB 1 AC X FU100 1002 3113 FUSE PI 471001 F10 1 AE A H300 2590 0749 OSCILLATOR HC 49U 1 AH X JK100 3501 8281 JACK POWER HEC0811 010010 1 AD C JK200 3501 5439 JACK...

Page 15: ...tection Circuit Audio Amplifier Circuit Earphone Jack Speaker Tunner Power Switch Display Controller Circuit A V Jack AC Jack Tuning Voltage Generator Circuit Power Supply Circuit 36 0 44 0 V 4 50 6 0...

Page 16: ...14 BACK LIGHT CONNECTER SWITCH...

Page 17: ...X per hour such that the ground does not become soaked or water accumulates on the ground Always make sure to wipe off the TV with a dry cloth when it has become wet after raining cause6 Is it all rig...

Page 18: ...an AC adapter or car cigarette lighter adapter action14 Yes it can However always make sure to operate the TV with batteries when using around water such as in the bath or shower Use of an AC adapter...

Page 19: ...CASIO TECHNO CO LTD Overseas Service Division Nishi Shinjuku Kimuraya Bldg 1F 5 25 Nishi Shinjuku 7 Chome Shinjuku ku Tokyo 160 0023 Japan...

Reviews:

No comments