Sharp 27C24, Service Manual

Page 1: ...d for after sales service only The contents are subject to change without notice MODELS POWER INPUT 120 V AC 60 Hz POWER RATING 105 W PICTURE SIZE 2 187cm2 339sq inch CONVERGENCE Magnetic SWEEP DEFLECTION Magnetic FOCUS Hi Bi Potential Electrostatic INTERMEDIATE FREQUENCIES Picture IF Carrier Frequency 45 75 MHz Sound IF Carrier Frequency 41 25 MHz Color Sub Carrier Frequency 42 17 MHz Nominal AUD...

Page 2: ...eter should be checked periodically 3 High voltage should always be kept at the rated value no higher Operation at higher voltages may cause a failure of the picture tube or high voltage circuitry and also under certain conditions may produce radiation in exceeding of desirable levels 4 When the high voltage regulator is operating properly there is no possibility of an X radiation problem Every ti...

Page 3: ...ks mechanical insulators etc 3 To be sure that no shock hazard exists check for leakage current in the following manner Plug the AC cord directly into a 120 volt AC outlet Do not use an isolation transformer for this test Using two clip leads connect a 1 5k ohm 10 watt resistor paralleled by a 0 15µF capacitor in series with all exposed metal cabinet parts and a known earth ground such as electric...

Page 4: ...l video INPUT 2 mode Press 3 times Switch back to the original TV mode CHANNEL UP DOWN Selects next higher channel Selects next lower channel Moves the mark of the MENU screen MENU Press Accesses MAIN MENU Press again Exits MAIN MENU DISPLAY Press Displays receiving channel for four seconds Press again Removes display Temporarily displays receiving channel when in Closed Caption mode Basic Remote ...

Page 5: ... the horizontal oscillator does not stop in step 5 the circuit must be repaired before the set is returned to the customer HIGH VOLTAGE CHECK High voltage is not adjustable but must be checked to verify that the receiver is operating within safe and efficient design limitations as specified checks should be as follows 1 Connect an accurate high voltage meter between ground and anode of picture tub...

Page 6: ...justment menu to ensure customer control are in their proper reset position 2 Service number selection In the service mode you will see the window screen as window 1 There are 4 adjustment categories 2DEF 3SIGNAL 4FEATURE 5FIX VALUE as show in Figure A Press CH UP DOWN button for selection and enter by VOL UP or VOL DOWN Press CH UP DOWN button to select the adjustment item and VOL UP DOWN to adju...

Page 7: ...FF 07 27 F03 E SAVE 00 3F 2A 2A F04 TUNER SETUP 00 01 00 00 F05 R TONE RD 00 7F 03 03 F06 R TONE BD 00 7F 7C 7C F07 B TONE RD 00 7F 00 00 F08 B TONE BD 00 7F 04 04 F09 FM LEVEL 00 1F 16 16 F10 AFC GAIN 00 01 00 00 F11 G DRIVE 00 0F 0F 0F F12 FBT BLK SW 00 01 01 01 F13 V COMP 00 07 07 07 F14 OSD CONT 00 03 01 01 F15 SHARPNESS 00 3F 0D 2 F16 FLT SYS 00 07 01 01 F17 KILLER OP 00 07 02 02 F18 PRE SHOO...

Page 8: ... VIDEO LEVEL 00 07 03 Must be 4 S03 Y MUTE 00 03 00 01 Y MUTE 02 V STOP Y MUTE 03 Activate color killer circuit S04 SUB BIAS 00 FF 30 Must be 30 S05 R BIAS 00 FF 00 S06 G BIAS 00 FF 00 S07 B BIAS 00 7F 00 S08 R DRIVE 00 7F 53 S09 B DRIVE 00 7F 53 S10 CONTRAST 00 7F 5A S11 TINT 00 7F 40 S12 COLOR 00 7F 40 S13 BRIGHTNESS 00 7F 40 S14 BRIGHTNESS 2 00 7F 40 SERVICE POSITION ADJUST ITEM DATA RANGE INIT...

Page 9: ... 2 35 volts as shown in Figure B 6 Adjust the master screen control until the raster darkens to the point where raster is barely seen 2 35 Vdc GND 7 Adjust the service adjustment S05 red S06 green S07 blue to obtain a good grey scale with normal white at low brightness level 8 Select the service a adjustment S03 and reset data to 00 Select the service adjustment S12 and reset data to obtain normal...

Page 10: ...or fine adjustment Vertical Size V Linearity and V S Correction Adjustments 1 Receive a good local channel 2 Enter the service mode DEF category and select the adjustment D02 for Vertical Size D05 for V Linearity and D06 for V S Correction Adjustment 3 Set in order D05 for V Linearity D06 for V S Correction and set the data to get the best linearity 4 Then adjust D02 data until it become a proper ...

Page 11: ...11 6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT 27C241 ...

Page 12: ...12 6 5 4 3 2 1 A B C D E F G H BLOCK DIAGRAM 27C241 ...

Page 13: ... picture unless otherwise indicated 2 All voltages measured with 1000µ V B W or Color signal WAVEFORM MEASUREMENT CONDITIONS 1 Photographs taken on a standard gated color bar signal the tint setting adjusted for proper color The wave shapes at the red green and blue cathodes of the picture tube depend on the tint color level and picture control 2 indicates waveform check points See chart waveforms...

Page 14: ...14 8 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM MAIN 1 Unit 27C241 10 7 9 ...

Page 15: ...15 17 16 19 18 15 14 13 12 11 10 27C241 ...

Page 16: ...16 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM MAIN 1 Unit 27C241 ...

Page 17: ...17 17 16 19 18 15 14 13 12 11 10 27C241 ...

Page 18: ...18 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CRT Unit 27C241 ...

Page 19: ...19 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Wiring Side PRINTED WIRING BOARD ASSEMBLIES 27C241 ...

Page 20: ...20 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Chip Parts Side 27C241 ...

Page 21: ...21 6 5 4 3 2 1 A B C D E F G H PWB B CRT Unit Wiring Side 27C241 ...

Page 22: ... IC751 VHIKA7809AP 1 X KA7809AP AC U IC771 VHIKA7805AP 1 X KA7805AP AC IC1401 VHIMM1111XF1EY X MM1111XFBE AC IC1403 VHIM52055FP 1Y X M52055FP AD IC2001 RH IX3528CEZZQ X IX3528CE AN IC2040 VHIPST994C 1 X PST994C AB IC2101 VHICAT24W16 1 X CAT24W16P AC IC3001 VHICXA2194Q 1Y X CXA2194Q AP IC3371 VHIAN7511 1 X AN7511 AC Q101 VS2SC3198 G 1 X 2SC3198 G AB Q201 VS2SC2735 1EY X 2SC2735 AB Q301 VS2SD601AR 1...

Page 23: ...0A1HW225M X 2 2 50V EL AB C416 VCEA0A1HW105M X 1 50V EL AB C451 VCQYTA1HM104J X 0 1 50V Mylar AB C454 VCEA0A1HW475M X 4 7 50V EL AB C456 VCEA0A1HW106M X 10 50V EL AB C491 VCEA0A1CW107M X 100 16V EL AB C492 VCKYCY1HF103ZY X 0 01 50V Ceramic AA C510 VCEA0A1VW477M X 470 35V EL AB C511 VCCSPA2HL180K X 18p 500V Ceramic AB C512 VCFYSA1JB224J X 0 22 63V Mylar AB C513 VCFYSA1JB473J X 0 047 63V Mylar AB C5...

Page 24: ...0 1 16W M Ox AA RJ4 VRS CY1JF000JY X 00 1 16W M Ox AA RJ5 VRS CY1JF000JY X 00 1 16W M Ox AA RJ6 VRS CY1JF000JY X 00 1 16W M Ox AA RJ10 VRS CY1JF000JY X 00 1 16W M Ox AA RJ11 VRS CY1JF000JY X 00 1 16W M Ox AA RJ14 VRS CY1JF000JY X 00 1 16W M Ox AA RJ15 VRS CY1JF000JY X 00 1 16W M Ox AA RJ16 VRS CY1JF000JY X 00 1 16W M Ox AA RJ17 VRS CY1JF000JY X 00 1 16W M Ox AA U R53 VRS RG3LB223J X 22k 3W M Ox AB...

Page 25: ...VRS CY1JF562JY X 5 6k 1 16W M Ox AA R747 VRS CY1JF682JY X 6 8k 1 16W M Ox AA R752 VRD RA2BE392JY X 3 9k 1 8W Carbon AA U R758 VRS RG2HC100J X 10 1 2W M Ox AB R762 VRS CY1JF103JY X 10k 1 16W M Ox AA U R773 VRS RG3LB270J X 27 3W M Ox AB U R774 VRS RG3LB680J X 68 3W M Ox AB R801 VRD RM2HD470JY X 47 1 2W Carbon AA R807 VRS CY1JF332JY X 3 3k 1 16W M Ox AA R808 VRS CY1JF272JY X 2 7k 1 16W M Ox AA R809 V...

Page 26: ...S2501 QSW K0202PEZZ X Switch AB S2502 QSW K0202PEZZ X Switch AB S2503 QSW K0202PEZZ X Switch AB S2504 QSW K0202PEZZ X Switch AB S2505 QSW K0202PEZZ X Switch AB S2506 QSW K0202PEZZ X Switch AB PWB A DUNTK9510WEV1 CRT Unit RESISTORS M Ox Metal Oxide M Film Metal Film Ref No Part No Description Code RY701 RRLYJ0081CEZZ X Relay AD F701 QFS B4023CEZZ X FUSE 4A 125V AB FB601 RBLN 0047CEZZY X FERRITE BEA...

Page 27: ...WZ0112GJFD X TV washer m8 x 16 x 1 2 AB PSPAH0134GJ00 X HIMERON 63 X 5 AB PSPAN0103GJZZ X Spacer for cabinet AB QCNW 0134MEZZ X WIRE SPEAKER AB QCNW 0166MEZZ X WIRE GBN AB QCNW 0167MEZZ X WIRE YBN AB TCAUH3045GJZZ X caution card AB TLABN0101GJZZ X Remark label chassis ID AB VSP9050PB40YA X speaker AE VSP9050PB40YA X speaker AE XTASD30P12000 X Screw BTN AA XTASD40P20000 X Screw Cab AA PWB A DUNTKC2...

Page 28: ...ARK Not replacement items FRONT Buffer Material Polyethylene Mat Polyethylene Bag Operation Manual Infrared R C unit Batteries REAR Use tape to fix the top side of packing case Use 12 staples to fix the bottom side of packing case 27C241 ...

Page 29: ...ans electronic mechanical photocopying recording or otherwise without prior written permission of the publisher QRC0016 U March 2004 Modify SEMEX J B Design and Production Information Design SEM Production SEMEX SHARP ELECTRONICA MEXICO S A DE C V Quality Reliability Control Center Blvd SHARP No 3510 Parque Industrial Rosarito Playas de Rosarito México B C 22710 27C241 ...