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Sharp DV-1600 Series, Service Manual

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Sharp DV-1600 Series Service Manual Download Page 19

K DIAGRAM

3Y

 REGULATOR

DC-SUPPLY

 

 

D

1

0

1

2

 

 

DC-SUPPLY

 

 

  T R A N S F O R M E R  

,

  S T A N D - B Y - S W

STAND-BY

 

r

DC AMP. 
D R I V E

P U L S E   A M P  

 

V-SIZE SW

0 1 0 1 5

Q1018
a1021

 

t

 

H-CENT SW

V-HOLD SW

a 1 1 2 0

  V - C E N T .   S W  

 022

E X T

 IN

V I D E O

 

 EXT

Video IN

CONTRAST
R1053

I

COLOUR
CONT. 

CONT. R1055

R1056

R-AMP

 0851

R-BIAS
R 8 5 3  

. CRT

 

 

 

K

I .

18

Summary of Contents for DV-1600 Series

Page 1: ...ediate Frequencies Picture IF Carrier Frequency 36 875 MHz Sound IF Carrier Frequency 31 375 MHz Colour Sub Carrier Frequency 32 445 MHz Power Input 240 Volts AC 50Hz Power Consumption 72 Watt Speaker Size Voice Coil Impedance 8 cm 16 ohms at 400 Hz Sweep Deflection Magnetic Tuning Ranges VHF Channels 0 thru 12 UHF Channels 28 thru 63 WARNING The chassis in this receiver is hot Use an isolation tr...

Page 2: ...ure at dose range the following pre cautions should be observed 1 When repairing the circuit be sure not to increase the high voltage to more than 27kV at beam 1000pA for the set 2 To keep the set in a normal operation be sure to make it function on 23 5 kV 1SkV at beam 1OOOpA in the case of the set The set has been factory adjusted to the above mentioned high voltage If there is a possibility tha...

Page 3: ...dB Note The sweep generator s earth lead must be grounded near the test point 3 Connect reponse lead low impedance probe with detector to TP201 collector of Q201 To oscil Figure 3 68f2 4 Voltage setting of PIF AGC Apply DC 3 9V to pin of PIF IC X201 5 Voltage setting of RF AGC Apply DC 4V to tuner AGC 6 Short TP601 and TP602 to stop sync separator circuit Procedure 1 Adjust the tuner IF coil to ha...

Page 4: ...ltage about S OV to pin of PIF IC IC201 Note The applied voltage should not exceed DC 7 OV 3 AFT rough adjust 1 Connect sweep generator to 1 Adjust T203 so that the depressed point T203 pin J of PIF IC IC201 of waveform is at 36 875 MHz as shown in Fig 6 1 OlOOp F Generator s output level 90dB Figure 4 I 36 875MHz I 2 Connect response lead to TP203 I 36 875MHz 1 To oscil loscope 1 OkS2 f Yl F Figu...

Page 5: ...or between pins and of IC201 Note Damping resistor leads should I be as short as possible 7 F or adjustment of PIF AGC Connect DC voltage about 5V to pin 13 of IC201 and adjust so that waveform of TP203 is at 1 Vp p 5 AFT fine adjust 1 Receive standard PAL colour bar T203 signal Input intensity Over 55 dB i 2 Connect oscilloscope to TP203 Oscilloscope range O SV div Sweeing time 20psec div Sync op...

Page 6: ...in Fig 10 4 Turn back R209 slowly until there disappears noise on oscil loscope At the time horizontal sync signal should keep on the I same level as before Fig 11 keep on this level 1 5 Set signal intensity at 90 to 95 dB and see that there is no black letter and sound beating on oscilloscope 1 6 Set signal intensity at 60 to 65 I dB and see that there is no Figure 11 noise on oscilloscope I 7 SI...

Page 7: ... Y3 of sub sound control R302 3 Adjust R302 to have 1 0 Vp p of waveform 400 Hz on oscilloscope 4 Obtain a normal sound in the l o following way Figure 15 Turn off the power switch first and then turn it on again and 2 Adjust R1022 so that output voltage of turn on the remote control speaker is 1 O Vp p transmitter then a normal sound is obtained 5 Connect oscilloscope to both ends of speaker 4 6 ...

Page 8: ...rive 2 Set contrast control at MAX I 2 Adjust contrast and brightness controls so R863 B drive position that beam current is 350pA then see that 3 Set brightness control at MAX 1 colour temperature background is still position at 6500 K If not readjust from the 4 Connect beam arnmeter to beginning TP603 and TP604 5 Adjust R406 sub contrast so that beam current is l OmA 3 Sub contrast adjust 1 Rece...

Page 9: ...nal V size adjust 1 1 R eceive monoscope pattern R510 I signal V linearity adjust 1 R509 Vcentering adjust c 1 Receive monoscope pattern SW501 signal Hcentering adjust 1 SW60 1 Procedure 1 Adjust R607 for good horizontal sync Figure 18 1 Adjust R504 so that vertical sync will be proper 1 Arrange the position of H size tip to have H size be at 8 12 max of overscanning 1 Adjust R5 10 and R509 at a t...

Page 10: ...aster appears Green Figure 21 7 Adjust purity magnets for a uniform green vertical band at I the center of CRT screen For this adjustment motion of each magnet should be as slight I as possible 1 8 Shift deflection yoke toward I CRT to achieve uniform green II purity on the entire of CRT I screen I 9 Perform white balance opera tion and see if white balance in I picture is normal I 3 Convergence 1...

Page 11: ...2CESA Colour Badge 602 I IO HiNDPl386CESA Channel Indicator Cover QTANJ0301 CEZZ Video Audio Terminal A X I II H DECO01 64CESB Power indicator Cover RRMCGOI 25CESA Remote Control Transmitter BE l l 2 HDECA0289CESA Decoration Metal RRMCU0079CEZZ Remote Control Receiver AW I 13 LANGK0086CESA Front Grass Bracket _ t b VTUVTE I AH I Tuner BL 2 CCABBI 337CEOl Back Cabinet Ass y VSP0080PB66WA Speaker AT...

Page 12: ...K 12 XTASDSOPl2000 Screw AA 2 NSFTTOOO9CEZZ Shaft AB 13 MSPRC0021 CEZZ Spring Eject Shaft AA 3 MSPRD0005CEFJ Spring Flap Cover AA 14 LHLDZll SOCEZZ Holder AB 4 PSPAHOOl9CEOO Spacer AA 15 NFSTZOOll CEFW Eject Shaft AB 5 LANGT9270CEFW Bracket AD 16 JBTN 1063CESA Eject Button AE 6 PCLiCl 001 CEZZ Clip AA 17 PM LT OO64CEOO Cushion AA 7 GCbVH9145CEOO Rack Guide AB 18 LHLDWlO46CEZZ Wire Holder AA 8 LX C...

Page 13: ...just point Connection Procedure A B 4 I Adjustment in A direction Adjustment in B direction Figure 22 DEFLECTION YOKE CLAMP SCREW rTAPE I CR P U R I T Y M A G N E T S L DEFLECTION YOKE TILT ADJUSTMENT WEDGE 11 ...

Page 14: ... I 0 II 9 D C _i l g 0 3 P a 5 O fe y j f g 8 8 cI I 8 ii l 3 Ho Rn B 8 5 9 O k 0 6 8 51 gr g go 1 D El 1 A I s z LH l 1 l z 57 D g I I a pJh 5ti k0 2 I ii u w I I 3 m 2 c N h 5 i I W I I I sx e j LJ I x a I 3 I 4 I 5 I 6 12 ...

Page 15: ...PRINTED WIRING BOARD ASSEMBLIES I BL tsi 5 u aa Ea C Figure 13 PWB A Wiring Side Figure 14 PWB B Wiring Side 1 I 2 I 3 I 4 I 5 I 6 I 7 13 ...

Page 16: ...I I 8 I 9 I 10 I 11 1 Figure 16 PWB C Wiring Side r l swi006 FT SW 1 1 z J e5 PUBFZL57 E Figure 16 PWB D Wiring Side Figure 17 PWB E Wiring Side 5 I 7 I 8 I 9 I 10 I 11 I 12 14 ...

Page 17: ...Figure 18 PWB F Wiring Side PWCFZl60r E s w e 2 c Figure 19 PWB G Wiring Side Figure 20 PWB H Wiring Side ...

Page 18: ...W e I t 1 1 SW1002 SWl RC I sw1003 SW1005 RIG DECORDER EXT Vhdeo EXT SOUND 81 C O N T R O L E R AMP SW AMP DC ATT IC1002 Q1012 01011 IC1003 b RRMCU0079CEZ Z P C PRE AMP IC3002 ho RIG AMP 01003 C t Y PICTURE S OUT AMP IC501 H DRIVE t Lz ol H DRIVE H OUT TRANS DAMPPER T601 0602 H FREQ H CENT R607 SW t SW601 v 12vDC 1 1 I H V 1 DETEC PROTEC 12v TOR TOR R E G U L A T O R 0608 a604 a603 t 0 12v R E C T...

Page 19: ...D BY c RERAY RYlOOl r DC AMP 5 DRIVE P U L S E A M P lo 7 V SIZE SW 01015 Q1018 a1021 a1019 t I t 50Hz 60Hz Dmnmmator 01013 a1014 H CENT SW V HOLD SW a1120 V C E N T S W a1 022 EXT Audio IN VIDEO FILLTER f EXT Video IN CONTRAST R1053 I 1 COLOUR CONT 01054 BRIGHT CONT R1055 RICTURE R1056 R AMP 0851 I R BIAS R 8 5 3 CRT G AMP _I w 420FSTC03 Q852 K t I 18 ...

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