Samsung SV-A20GK, Service Manual

Page 1: ...r mechanical disassembly and adjustment refer to the Mechanical Manual DX7 R RC DX8 R RC AC68 20316A 1 Precautions 2 Reference Information 3 Product Specifications and Comparison Chart 4 Disassembly and Reassembly 5 Alignment and Adjustment 6 Exploded View and Parts List 7 Electrical Parts List 8 Block Diagrams 9 PCB Diagrams 10 Wiring Diagram 11 Schematic Diagrams Samsung Electronics Co Ltd JUL 1...

Page 2: ... exceed 0 5 milliamp Reverse the power plug prongs in the AC outlet and repeat the test 6 X ray Limits The picture tube is designed to prohibit X ray emissions To ensure continued X ray protection replace the picture tube only with one that is the same type as the original Fig 1 1 AC Leakage Test 7 Antenna Cold Check With the unitÕs AC plug disconnected from the AC source connect an electrical jum...

Page 3: ...strumentÕs ground lead to the instrument chassis ground before connecting the positive lead always remove the instrumentÕs ground lead last 17 Observe the original lead dress especially near the following areas Antenna wiring sharp edges and especially the AC and high voltage power supplies Always inspect for pinched out of place or frayed wiring Do not change the spacing between components and th...

Page 4: ...The X 5 chassis jig can be used for the following 1 When repairing or confirming the operation of the deck assÕy 2 When replacing or repairing the components located under the deck assÕy 3 When repairing the function PCB 5 The X 5 chassis jig can not be used for the following 1 Repairing defects in the video section 2 Repairing defects in the audio section 3 If the defect is related to tape speed ...

Page 5: ... of the function buttons on the function PCB can be used 9 If the test tape is ejected while the jig is in use attempt to re load the tape by simultaneously touching the start and end sensor LEDs If the tape still does not load reset the function PCB by pressing SW715 Note After completing repairs SW715 on the function PCB in order to reset 1 Unplug the power cord from AC outlet 2 Remove the deck ...

Page 6: ... Y MAIN CN603 CONNECTS TO THE ASS Y MAIN CN601 CONNECTS TO THE DRUM MOTOR CONNECTOR OF ASS Y FULL DECK CONNECTS TO THE CAPSTAN MOTOR CONNECTOR OF ASS Y FULL DECK CONNECTS TO THE LOADING MOTOR CONNECTOR OF ASS Y FULL DECK ASS Y FULL DECK ASS Y MAIN 1 SCREW 1 3X10 2 SCREWS 2 3X10 CN604 CN603 CN605 CN601 How to Connect X 5 chassis jig ...

Page 7: ...Reference Information 2 4 Samsung Electronics MEMO ...

Page 8: ... 11 69 mm sec Recording playback time SP 3 hours E 180 Tape LP 6 hours E 180 Tape F F REW time About 100 190 sec in REW F F with E 180 VIDEO Input 0 5 to 2 0 Vp p 75 ohm unbalanced Output 1 0 0 2 Vp p 75 ohm unbalanced Signal to noise ratio Better than 43 dB SP Horizontal resolution More than 240 lines SP Audio Input 8 dBm 47 Kohm unbalanced Output 8 3 dBm 1 Kohm unbalanced Wow and flutter WTD 0 4...

Page 9: ... O O X X O 1 SCART SP O SV A40GK POL SV 205G O O X O O X X O 1 SCART SP O SV A60GK SEH SV 400G X X X O X X O X 1 SCART SP LP O SV A60GK POL SV 400G X X X O X X O X 1 SCART SP LP O SV A80GK SEH SV 405G O O O O O O O O 1 SCART SP LP O SV A80GK POL SV 405G O O O O O O O O 1 SCART SP LP O FUNCTION MODEL SHUTTLE AUDIO DUBBING VPS SLOW SHOW VIEW ATS JUST REC FRONT A V REAR JACK TAPE SPEED DLC REMARK ...

Page 10: ...y and Reassembly 4 1 Cabinet Assembly Note Disassemble in the order shown Reassemble in reverse order 4 1 1 Cabinet Top removal REMOVE 5 SCREWS 1 Remove 5 screws and slide the top cabinet to the rear to remove Fig 4 1 Cabinet Top removal ...

Page 11: ... bottom cover toward arrow ÒAÓ Fig 4 2 Bottom Cover removal A REMOVE 2 SCREWS BH 1 3X12 YELLOW 1 2 Lift up the bottom cover in the direction of arrow A REMOVE 2 SCREWS BH 1 3X12 YELLOW 1 A 2 Lift up the bottom cover in the direction of arrow A SV A20GK SV A60GK SV 200G SV 400G SV A40GK SV A80GK SV 205G SV 405G ...

Page 12: ...ont Panel removal Bottom view RELEASE 4 HOOKS REMOVE KNOB SHUTTLE 1 2 RELEASE 3 HOOKS 3 1 Remove the knob shuttle 2 Release 4 hooks on the top side and 3 hooks on the bottom side and then pull the assÕy front panel to remove Top view Fig 4 3 Ass y Front Panel removal ...

Page 13: ... removal 1 Release 5 hooks and remove the assÕy function timder Note Take extreme care not to damage the PCB when removing it Fig 4 4 Ass y Function Timer removal RELEASE 5 HOOKS FRONT A V OPTION RELEASE 5 HOOKS SV A20GK SV A60GK SV 200G SV 400G SV A40GK SV A80GK SV 205G SV 405G ...

Page 14: ...BOTTOM COVER FRAME 1 Remove 2 screws holding the bottom cover 2 Remove 2 screws holding the frame 3 Remove 2 screws holding the housing assÕy 4 Remove 2 screws holding the assÕy full deck 5 Lift the assÕy full deck up 6 Release 1 tab holding the connector board assÕy 7 Release 1 hook holding the assÕy main 8 Lift the assÕy main up to remove Note 1 When removing chassis take extreme care not to dam...

Page 15: ...sassembly and Reassembly 4 6 Samsung Electronics 4 2 Circuit Board Locations ASS Y MAIN BOARD ASS Y FUNCTION TIMER BOARD FRONT A V OPTION Fig 4 6 Circuit Board Locations SV A20GK SV A60GK SV 200G SV 400G ...

Page 16: ...Disassembly and Reassembly Samsung Electronics 4 7 ASS Y MAIN BOARD ASS Y FUNCTION TIMER BOARD Fig 4 6 Circuit Board Locations SV A40GK SV A80GK SV 205G SV 405G ...

Page 17: ...Disassembly and Reassembly 4 8 Samsung Electronics MEMO ...

Page 18: ...D SEARCH MEMORY OUTPUT INDEX SLOW INPUT INPUT BUTTON SP LP BUTTON SP LP A DUB VPS FINE CH TRK TRACKING FINE BUTTON POWER BUTTON POWER PLAY BUTTON PLAY TEST BUTTON IS HIDDEN BEHIND OF INLAY 3 HEAD S W ADJ INPUT OR TEST AND 3 BUTTON 1 TRACKING CENTER ADJ INPUT OR TEST AND 1 BUTTON 633 252 REMOTE CONTROL ASS Y PART NO Fig 5 1 Remote Control Ass y Jig for X 5 X 6 Chassis AC93 10039Y 69099 633 252 EJEC...

Page 19: ...adjustment and confirmation of assÕy full deck 5 2 1 The number and position of test point GND CTL TP01 H D SW V ENV A OUT V OUT AGC SCART CTL TP02 TP03 TP04 TP05 TP06 TP07 TP08 Fig 5 3 The position of test point Main PCB Component side Test point TP02 CTL Pulse TP03 H D S W Trigger TP04 V Envelope TP05 Audio out CTL PULSE V ENVELOPE AUDIO OUT H D S W TRIGGER ...

Page 20: ... AC93 10039Y 69099 633 252 IS AVAILABLE Note How to use the ÒTESTÓ button 1 Disattach the inlay of remote control assÕy See Fig 5 1 and Fig 5 2 2 Press the ÒTESTÓ button with the pincers and the precise driver as shown in Fig 5 1 and 5 2 1 When using the ÒINPUTÓ button of remote control assÕy 1 Simultaneously press the ÒINPUTÓ button and Ò1Ó button in PB mode This will adjust the tracking center a...

Page 21: ... assÕy See Fig 5 1 and Fig 5 2 2 Press the ÒTESTÓ button with the pincers and the precise driver as shown in Fig 5 1 and 5 2 1 When using the ÒINPUTÓ button of remote control assÕy 1 Simultaneously press the ÒINPUTÓ button and Ò1Ó button in PB mode This will adjust the tracking center automatically 2 Set the tracking preset using the ÒFINE Tracking TRK Ó button of remote control 3 After adjustment...

Page 22: ...P LPÓ button simultaneously 4 This will adjust the head S W point adjustment automatically 5 After adjustment is completed press the ÒPOWERÓ button to release 5 3 1 b IF NORMAL REMOTE CONTROL ASS Y FOR X 7 X 8 DX7 R DX7 RC DX8 R DX8 RC CHASSIS IS AVAILABLE 1 When using the ÒINPUTÓ button of remote control assÕy 1 Insert an SP tape into the housing assÕy 2 Press the ÒPLAYÓ button 3 Press the ÒINPUT...

Page 23: ...nerator and set channel selector to CH 2 48 25MHz 4 Adjust the point signal level so that the output of attenuator is 70dBu 5 Apply the output of attenuator to the ANT IN terminal of VCR 6 Set the channel of VCR to CH 2 7 Connect DC voltmeter to TP07 8 Adjust VR401 for DC 3 7 0 1V Composition for RF AGC adjustment PAL Color bar signal out PAL Pattern generator TV CH Generator CH 2 48 25MHz Attenua...

Page 24: ...ram S W SW601 E S S S SW A SW B Action Mode L H L L H L L L L H H H L L H H H L L L L H H H L L L L H H Eject Cassette IN Unload R PS Z R PS Pinch Roller off Position Still Slow F ADV PB T Stop REC Pause F PS Z FPS Stop Power off FF REW SW A IC601 77 SW B IC601 78 END SENSOR IC601 13 START SENSOR IC601 14 EJECT UNLOAD RPS R SLW STILL PB STOP F R CASS IN ...

Page 25: ...Alignment and Adjustment 5 8 Samsung Electronics MEMO ...

Page 26: ...Samsung Electronics 6 1 6 Exploded View and Parts List 6 1 Cabinet Assembly 6 2 Mechanical Parts Top Side 6 3 Mechanical Parts Bottom Side 6 4 Housing Assembly Page 6 2 6 4 6 6 6 8 ...

Page 27: ...nics 6 1 Cabinet Assembly 670 S N A 663 157 PT601A PT602A LD601A SP602 SP601 601 S N A 661 108 S N A 157 153 155 155 155 109 SC301 4 3 2 1 21 22 1 21 22 3 SV A20GK SV A60GK SV 200G SV 400G S N A SERVICE NOT AVAILABLE SV A40GK SV A80GK SV 205G SV 405G ...

Page 28: ...K A80GK SV 205G 405G ONLY SESA LOCAL 21 DOOR CASSETTE SESA LOCAL 22 AC61 62003A SPRING SUS304 GE RCA SESA LOCAL 108 AC61 10972K CONNECTOR BOARD ASSY SV A70XK HIPS94 HB T2 5 L20 SME LOCAL 109 AC63 32126A COVER BUTTOM SV D140F SESA LOCAL 153 AC60 12126A SCREW BH BH 4 12 FE FZY 155 AC60 12134A SCREW TAP BH BH 2 4X16 FE 157 AC60 10063A SCREW TAPTITE BH M3 L12 ZPC3 SWRCH18A 601 DO NOT ORDER ASSY MAIN S...

Page 29: ...0 T216 T201 T207 T300 901 920 T309 904 901 T203 T209 T240 900 T239 T210 956 956 956 T208 T202 T227 T233 957 T234 T228 T230 T229 T231 901 912 T233 T204 T238 T232 T225 T226 952 G T236 T211 T223 T217 T219 952 T218 T212 T221 T237 G G O G 905 919 T224 T303 T302 DX7 R DX8 R DX7 RC DX8 RC T222 ...

Page 30: ...BT 3300 T4 0 L32 X 5 IS T218 AC61 62017A SPRING SUB BRAKE L ES SUS304 PI0 23 D3 5 L14 8 T219 AC33 10003P HEAD MAGNET F E MH131S L51 05XW7 4XH12 3 T220 AC66 82050A SLIDER G R ASSY S X 5 T221 AC66 82059A SLIDER G R ASSY T X 7 VW 31H T222 AC33 10002E HEAD CLEANER X 5 OPTIONAL T223 AC66 20065A RACK HOUSING L74 29 POM M90 44 BLK M1 3 14 T224 AC33 10215A HEAD ACE ALL ASSY X 7 T225 AC66 80005A SLIDER PIN...

Page 31: ...d View and Parts List 6 6 Samsung Electronics 6 3 Mechanical Parts Bottom Side B257 G G G O B256 B254 951 951 952 918 B258 B261 B255 B260 B267 B266 B265 956 902 922 B259 B262 B253 B263 B268 B251 958 B252 B264 ...

Page 32: ...GEAR LOADING R X5 B254 AC61 60115A SPRING BRAKE CAPSTAN ES SUS304WPB PI0 4 D22 L16 1 B255 AC66 20004A GEAR MASTER POM M90 44 M 1 Z 60 SP X 5 B256 AC31 12001R MOTOR D D CAPSTAN DMVCMC06A B257 AC66 62008A BELT CAPSTAN 5CM 70 FR W2 T2 L88 6 B258 AC66 20066A CLUTCH ASSY X5 B259 AC66 32185A LEVER SLIDER PINCH PBT T4 NAT B260 AC66 20016A GEAR WORM WHEEL POM SW 01 M0 55 M1 Z57 Z10 GEA B261 AC66 30011A LE...

Page 33: ...Exploded View and Parts List 6 8 Samsung Electronics 6 4 Housing Assembly 914 902 H510 H550 H500 H520 H522 H524 H526 902 H521 H533 H532 H531 H535 H530 H540 H545 H544 H541 H543 H542 914 914 ...

Page 34: ... LEVER KEY CASSETTE LUCEL N109 LD T2 5 L20 W15 2 H530 62203 0105 00 CHASSIS SIDE L ASSY ABS X5FL0505A X 5 H531 AC61 10004A CHASSIS SIDE L ABS HF 380 T10 BLK X5 BLK H532 AC66 30004A LEVER LIGHT SHUTTER LUCEL N109 LD T2 5 L61 7 BLK H533 AC61 60142A SPRING LIGHT ES SUS304WPB PI0 2 L11 4 OD3 7 H535 AC66 30017A LEVER DOOR LUCELN109 LD T5 L74 3 W21 1 H540 62203 0104 00 CHASSIS SIDE R ASSY ABS X5FL0505A ...

Page 35: ...Exploded View and Parts List 6 10 Samsung Electronics MEMO ...

Page 36: ...COIL CHOKE 10UH 15 RA K 30 Q80 150KHZ SME LOCAL L1S31 AC27 12001N COIL CHOKE 10UH 15 RA K 30 Q80 150KHZ SME LOCAL L1S32 AC27 92001M INDUCTOR 70UH M RT BFS3565R2F SME LOCAL L1S33 AC27 92001M INDUCTOR 70UH M RT BFS3565R2F SME LOCAL L1S34 AC27 92001M INDUCTOR 70UH M RT BFS3565R2F SME LOCAL PT1S01 AC26 20120C TRANS SWITCHING 100 230V UL CSA EE28 21 11 1 Q1P01 0501 000610 TR SMALL SIGNAL KSA928A Y PNP ...

Page 37: ... 20 16V Y5V TP 2012 SME LOCAL C655 2203 002188 C CERAMIC CHIP 10NF 80 20 16V Y5V TP 2012 SME LOCAL C660 2203 001702 C CERAMIC CHIP 2 2NF 5 50V X7R TP 2012 SME LOCAL C661 2203 001702 C CERAMIC CHIP 2 2NF 5 50V X7R TP 2012 SME LOCAL C663 2203 000979 C CERAMIC CHIP 47NF 10 50V X7R 2012 TP SME LOCAL C681 2203 001557 C CERAMIC CHIP 100NF 80 20 25V Y5V TP 2012 SME LOCAL C682 2203 001557 C CERAMIC CHIP 1...

Page 38: ...W AA TP 1 8X3 2MM SME LOCAL R640 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM SME LOCAL R641 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM SME LOCAL R644 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM SME LOCAL R648 2007 001589 R CHIP MELF 1KOHM 5 1 8W DB BK 2012 SME LOCAL R649 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM SME LOCAL R651 2001 000786 R CARBON 47KOHM 5 1 8W AA TP 1 8...

Page 39: ...001608 C CERAMIC CHIP 22NF 80 20 50V Y5V TP 2012 C364 2401 001912 C AL 1UF 20 50V GP BK 5X11MM 2MM SME LOCAL C366 2202 000797 C CERAMIC MLC AXIAL 10NF 30 16V Y5P TP 3 5X19 SME LOCAL C367 2203 001557 C CERAMIC CHIP 100NF 80 20 25V Y5V TP 2012 SME LOCAL C368 2203 000979 C CERAMIC CHIP 47NF 10 50V X7R 2012 TP SME LOCAL C369 2401 001912 C AL 1UF 20 50V GP BK 5X11MM 2MM SME LOCAL C370 B1102 0113 C FILM...

Page 40: ...1 000449 R CARBON 2 2KOHM 5 1 8W AA TP 1 8X3 2M SME LOCAL R341 2001 000472 R CARBON 2 7KOHM 5 1 8W AA TP 1 8X3 2M R350 2007 001629 R CHIP MELF 1 8KOHM 5 1 8W DB BK 2012 SME LOCAL R351 2007 001616 R CHIP MELF 120KOHM 5 1 8W DB BK 2012 R399 2007 001536 R CHIP MELF 330OHM 5 1 8W DB BK 2012 R3A02 2001 000405 R CARBON 180OHM 5 1 8W AA TP 1 8X3 2MM SME LOCAL R3A03 2001 000780 R CARBON 470OHM 5 1 8W AA T...

Page 41: ...P 1 8X3 2M SME LOCAL R4A9 2001 000595 R CARBON 3 3MOHM 5 1 8W AA TP 1 8X3 2M SME LOCAL R4B1 2007 001568 R CHIP MELF 22KOHM 5 1 8W DB BK 2012 SME LOCAL R4B2 2007 001568 R CHIP MELF 22KOHM 5 1 8W DB BK 2012 SME LOCAL TL401 AC26 12001A TRANS DET 9MM 0UH BLK 8PF 77 9MHZ M7T1 S U401 AC40 30070P TM BLOCK TCRK9600VD04A PAL G K HYPER 1 VR401 2103 000307 VR SEMI 22KOHM 30 1 10W TOP SME LOCAL VPS PARTS C6P0...

Page 42: ...T101K SME LOCAL L703 2701 000181 INDUCTOR AXIAL 33UH 5 2 4X3 4MM SME LOCAL LD701 0601 000497 LED ROUND GRN 3MM 565NM Q701 0504 000203 TR DIGITAL KSR1004 NPN 300MW 47K 47K TO 9 SME LOCAL R701 2004 000292 R METAL 12OHM 5 1 4W AA TP 2 4X6 4MM SME LOCAL R702 2001 000290 R CARBON 10KOHM 5 1 8W AA TP 1 8X3 2MM SME LOCAL R703 2004 000790 R METAL 330OHM 5 1 4W AA TP FRONT A V OPT SME LOCAL R704 2001 00096...

Page 43: ...7 8 Samsung Electronics Electrical Parts List MEMO ...

Page 44: ...Samsung Electronics 8 1 8 Block Diagrams Page 8 2 8 3 8 4 8 1 Overall Block Diagram 8 2 System Control 8 3 Video ...

Page 45: ...Block Diagrams 8 2 Samsung Electronics 8 1 Overall Block Diagram ...

Page 46: ...Block Diagrams Samsung Electronics 8 3 8 2 System Control ...

Page 47: ...Block Diagrams 8 4 Samsung Electronics 8 3 Video ...

Page 48: ...Samsung Electronics 10 1 10 Wiring Diagram ...

Page 49: ...ntification of Main PCB 11 1 S M P S Power 11 2 System Control Servo 11 3 Audio Video SV A20GK SV A40GK SV 200G SV 205G 11 4 Audio Video SV A60GK SV A80GK SV 400G SV 405G 11 5 IF 11 6 I O 11 7 VPS 11 8 Function Timer SV A20GK SV A60GK SV 200G SV 400G 11 9 Function Timer SV A40GK SV A80GK SV 205G SV 405G 11 10 Remote Control ...

Page 50: ...der the electrostatically sensitive ES devices section of this service manual Note Do not use the part number shown on this drawing for ordering The correct part number is shown in the parts list may be slightly different or amended since this drawing was prepared Important safety notices Components identified with the mark have the special characteristics for safety When replacing any of these co...

Page 51: ...Schematic Diagrams Samsung Electronics 11 3 11 1 S M P S POWER OPTION OPTION ...

Page 52: ...Schematic Diagrams 11 4 Samsung Electronics 11 2 System Control Servo ...

Page 53: ...Schematic Diagrams Samsung Electronics 11 5 IC601 HD6433977 RA10F ...

Page 54: ...Schematic Diagrams 11 6 Samsung Electronics 11 3 Audio Video SV A20GK A40GK SV 200G 205G REC Y PROCESS REC C PROCESS PB Y PROCESS PB C PROCESS REC LINEAR AUDIO PB LINEAR AUDIO ...

Page 55: ...Schematic Diagrams Samsung Electronics 11 7 IC301 SS11511M IC302 LA7411 IC303 SS23377M ...

Page 56: ...Schematic Diagrams 11 8 Samsung Electronics 11 4 Audio Video SV A60G A80G SV 400G 405G REC Y PROCESS REC C PROCESS PB Y PROCESS PB C PROCESS REC LINEAR AUDIO PB LINEAR AUDIO ...

Page 57: ...Schematic Diagrams Samsung Electronics 11 9 IC301 SS11511M IC302 LA7416 IC303 SS23377M ...

Page 58: ...Schematic Diagrams 11 10 Samsung Electronics 11 5 IF SYSCON SERVO SMPS POWER ...

Page 59: ...Schematic Diagrams Samsung Electronics 11 11 IC401 TDA9800 ...

Page 60: ...Schematic Diagrams 11 12 Samsung Electronics 11 6 I O ...

Page 61: ...Schematic Diagrams Samsung Electronics 11 13 11 7 VPS ...

Page 62: ...Schematic Diagrams 11 14 Samsung Electronics SYSCON SERVO CN601 11 8 Function Timer SV A20GK SV A60GK SV 200G SV 600G ...

Page 63: ...Schematic Diagrams Samsung Electronics 11 15 SYSCON SERVO CN601 11 9 Function Timer SV A40GK SV A80GK SV 205G SV 405G ...

Page 64: ...Schematic Diagrams 11 16 Samsung Electronics 11 11 Remote Control ...