Television Video Cassette Recorder Chassis : C15C (REV.1) Model : TX20C53X/XET TX21B5DF3X/XEE TX21B5DF3X/XET TI14B73X/XEU Television Video Cassette Recorder CONTENTS Precautions Specifications Disassembly and Reassembly Alignment and Adjustment (Mechanical) Alignment and Adjustment (Electrical) Troubleshooting Exploded View and Parts List Electrical Parts List...
4-1-1 Top View Œ ´ ˇ ¨ ˆ Ø Fig. 4-1 Top parts Location-1 Œ GEAR FL CAM ´ MOTOR LOADING ASS’Y ˇ LEVER FL ARM ASS’Y ¨ HOLDER FL CASSETTE ASS’Y ˆ LEVER FL DOOR Ø SLIDER FL DRIVE Samsung Electronics...
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´ CYLINDER ASS’Y ˝ GEAR IDLE ˇ ACE HEAD ASS’Y Ô LEVER IDLE ¨ LEVER UNIT PINCH ASS’Y LEVER T BRAKE ASS’Y ˆ LEVER #9 GUIDE ASS’Y Ò DISK T REEL Ø LEVER TENSION ASS’Y ∏ BAND BRAKE ASS’Y Samsung Electronics...
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Œ GEAR JOINT 1 ´ GEAR JOINT 2 ˇ BRACKET GEAR ¨ MOTOR CAPSTAN ASS’Y ˆ LEVER T LOAD ASS’Y Ø GEAR LOADING DRIVE ∏ LEVER S LOAD ASS’Y ” HOLDER CLUTCH ASS’Y ’ BELT PULLEY ˝ SLIDER CAM Samsung Electronics...
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Lever FL Cassette-R ´ at disassembling and "B" reassembling. ´ LEVER FL DOOR ˇ HOOK "C" Fig. 4-4 Lever FL Door Removal RAIL [B] Œ HOLDER FL CASSETTEE ASS`Y ´ LEVER FL CASSETTEE -R "A" BOSS [A] Fig. 4-5 Holder FL Cassette Ass’y Removal Samsung Electronics...
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LEVER LOAD T LEVER LOAD S Lever Tension Drive Removal TIMING POINT 2 TIMING POINT 3 PIN A PIN D PIN C PIN B ˇ SLIDER CAM Fig. 4-14 Gear Loading Drive, Slider Cam, Lever Load S, T Ass’y Assembly Samsung Electronics...
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ˇ SPRING BRAKE Œ SPRING TENTION LEVER STOPPER Œ LEVER S BRAKE ASS`Y "A" HOOK(C) MARK[B] HOOK(B) ´ LEVER T BRAKE ASS`Y Fig. 4-16 Lever Tension Ass’y, Band Brake Ass’y Removal Fig. 4-17 Lever Brake S, T Ass’y Removal Samsung Electronics...
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´ DISK T REEL add oil in the boss of Lever Idle Œ. "A" Œ LEVER IDLE ´ GEAR IDLE "B" ´ GEAR IDLE HOOK "C" Fig. 4-19 Disk S, T Reel Removal Fig. 4-18 Gear Idle Ass’y Removal Samsung Electronics 4-10...
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Fig. 4-21 Lever Up Down Ass’y Removal SPRING GEAR CENTER ASS'Y GUIDE LEVER UP DOWN ASS'Y RING <GOOD> <BAD> GEAR POST HOOK Fig. 4-20 Holder Clutch Ass’y Removal MAIN BASE Fig. 4-22 Lever Up Down Ass’y Removal 4-11 Samsung Electronics...
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Œ GUIDE CASSETTE DOOR Œ LEVER UNIT PINCH ASS`Y HOOK [A] ´ PLATE JOINT ˇ SPRING PINCH DRIVE Fig. 4-23 Guide Cassette Door Removal Fig. 4-24 Lever Unit Pinch Ass’y, Plate Joint, Spring Pinch Drive Removal Samsung Electronics 4-12...
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2) After reinstalling, check the bottom side of the Post #9 Guide to the top side of Main Base. "A" Œ SPRING #9 GUIDE ´ LEVER #9 GUIDE ASS`Y "B" Fig. 4-26 FE Head Removal Fig. 4-25 Lever #9 Guide Ass’y Removal 4-13 Samsung Electronics...
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2) Remove the screw Œ. 3) Lift the ACE Head Ass’y ´. Œ SLIDER S ASS`Y Œ SCREW ´ SLIDER T ASS`Y ´ HEAD ACE ASS`Y Fig. 4-28 Slider S, T Ass’y Removal Fig. 4-27 ACE Head Removal Samsung Electronics 4-14...
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1) Release the Hook Œ. 2) Lift the Lever Head Cleaner Ass’y ´. ´ LEVER HEAD CLEANER ASS'Y Œ HOOK SLEEVE-HEAD CLEANER ˇ CYLINDER ASS'Y Fig. 4-29 Plate Ground Deck, Cylinder Ass’y Removal Fig. 4-31 Level Head Cleaner Ass’y Removal 4-15 Samsung Electronics...
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3) Rotate Gear Worm Œ clockwise using screw driver again up to the state of eject mode and then pick out the tape.(Refer to Fig.4-33) ˇ MOTOR CAPSTAN ASS'Y Fig. 4-32 Damper Capstan,Motor Capstan Ass’y Removal FRAME Fig. 4-33 Samsung Electronics 4-16...
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∆ CAPSTAN MOTOR PULLEY BELT PULLEY ∆ HOLDER CLUTCH ASS’Y GEAR CENTER ASS’Y GEAR IDLE (2Point) LOADING MOTOR BAND BRAKE ASS’Y BRAKE T ASS’Y ∆ : Cleaning O : Check and replacement in necessary : Add Oil 4-17 Samsung Electronics...
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Fig. 4-4-1 Location of Tape Transport Adjustment PINCH ROLLER FE HEAD CYLINDER ASS'Y GUIDE ROLLER "S" GUIDE ROLLER "T" POST TENSION #8 GUIDE POST #9 GUIDE POST #3 GUIDE POST MAIN BASE ACE HEAD CAPSTAN SHAFT Fig. 4-4-2 Tape Travel Diagram Samsung Electronics 4-18...
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Fig. 4-5-1 Location of ACE Head Adjustment Screw 1) See “2. Alignment and Adjustment” for ACE Head position (X-Point) adjustment. AUDIO HEAD VIDEO HEAD 0 ~ 0 .25 mm CONTROL HEAD Fig. 4-5-2 ACE Head Height Adjustment 4-19 Samsung Electronics...
) driver to obtain a flat video RF envelope as shown in Fig. 2-8. IDEAL ENVELOPE S HEIGHT TOO HIGH T HEIGHT TOO HIGH S HEIGHT TOO LOW T HEIGHT TOO LOW GUIDE ROLLER S GUIDE ROLLER T Fig. 4-5-6 Guide Roller S, T Height Adjustment Samsung Electronics 4-20...
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3) Brake is operated by slider cam at FF/REW mode. 4) Transportation of accurate driving force is done by gears. (Gear Center Ass’y) Note : If the spec. does not meet the followings speci- fications, replace the holder clutch ass’y and then recheck. 4-21 Samsung Electronics...
Adjustment, Option and Reset. 3. Access the Adjustment Mode by pressing the “VOLUME” keys ( Up or Down). The adjust- ment parameters are listed in the accompany- ing table, and selected by pressing the CHAN- NEL keys ( , ). Samsung Electronics...
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"FACTORY" key . Even if the TV power is cut off, the Aging Mode is not cancelled. The "AGING" marking is displayed on the screen. The AGING mode is cancelled by repressing the "FACTORY" key. Samsung Electronics...
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Function Reset : After Factory Reset, the following items revert to their initial values. Volume Program Channel P-STD CUSTOM Auto Power Reserved Timer Recording ALL CLEAR Skip (Store/Clear) ALL CLEAR Caution : When the EEPROM is replaced, all items revert to their initial values. Samsung Electronics...
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2. Turn on the TV. Set the Brightness and Contrast controls to minimum (zero beam current). 3. The high voltage should not exceed 27.5KV. 4. Adjust the Brightness and contrast controls to both extremes. Ensure that the high voltage does not exceed 27.5KV under any conditions. Samsung Electronics...
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9. Slowly move the deflection yoke forward, and adjust for the best overall green screen. 10. Temporarily tighten the deflection yoke. 11. Produce blue and red rasters by adjusting the low-light controls. Check for good purity in each field. 12. Tighten the deflection yoke. Samsung Electronics...
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1. Input either a Lion Head or a “pure white” pattern. 2. Warm up the TV for 30 minutes. 3. Check the data in the Service Mode 4. Adjust RG, BG in the Factory Mode. 5-4-7 (B) LOW-LIGHT ADJUSTMENT 1. Automatically accomplished during the high-light adjustment. Samsung Electronics...
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Connect DC Voltmeter to AFT terminal of TUNER IF-MODULE. After selecting P00, input to IF1 terminal of TU002 (38.9 MHz Using PM5518) _ 0.2V (Using FRANCE : T101, PAL/SCAM B/G,I,D/K : L102) After selecting P00, set to 2.5V + Samsung Electronics...
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7. Pattern Generator : PAL color bar. 100% White (100%) signal White. White (75%) signal Burst Signal (as fiat as possible) 0.7V 0.3V 0.3V Horizontal sync signal Fig. 5-4 Alignment Tape Fig. 5-6 Color bar signal of alignment tape (75% Color Bars) Samsung Electronics...
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STOP1 Stop (Play position 5 Min. over) STOP 2 (MAIN Break ON MODE) FF / REW 1 High speed Rew, Low speed FF FF / REW 2 High speed FF, Low speed Rew X : DON’T CARE 5-10 Samsung Electronics...
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HI FI C-AXIAL 2401-000598 1uF,50V CM516 C-ELEC HI FI CM517 2202-000797 C-AXIAL HI FI 2401-000603 CM518 C-ELEC 1uF,50V HI FI 332,50(P) 2301-000232 CM519 C-RADIAL HI FI 472,50V(P) CM520 2301-000445 C-RADIAL HI FI C-ELEC CM521 2401-000922 22uF,16V HI FI Samsung Electronics 5-11...
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RM503 HI FI 2.7K RM504 2001-000472 HI FI RM505 2001-000508 220K HI FI RM506 2001-000281 HI FI RM507 2001-000281 HI FI RM510 2001-000660 HI FI 2001-000290 RM511 HI FI 2001-000786 RM512 HI FI RM513 2001-000786 HI FI 5-12 Samsung Electronics...
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R E M A R K S DM712 0401-000005 1N4148 4HEAD QM318 0504-000119 KSR1004 4HEAD RM380 2001-001031 4HEAD DM715 0401-000005 1N4148 2HD LP QM303 0504-000119 KSR1004 2HD LP RM320 2001-000554 2HD LP RM626 2001-000429 2HD LP DM714 0401-000005 1N4148 MESECAM Samsung Electronics 5-13...
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L O C . NO C O D E -NO R E M A R K S CM330 CM369 CM385 CM388 CM607 CM608 CM646 DM716 DM717 ICM604 LM311 RM326 RM337 RM374 RM375 RM379 RM608 RM617 RM692 RM695 XTM302 XTM602 5-16 Samsung Electronics...
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Is Q801 Pin 3 Pin 64 Voltage 5V? 19~22V? Check IC801 Check/Replace T801. Check H.V SYNC on IC901 Pins 1, 2 Check/Replace IC901. Check IC901 Pin 3 is High when power is On. Check/Replace IC902. Check the voltage of TU001. Samsung Electronics...
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Retouch CN102 or Replace CN102 Check IC901 #64 Check IC804 Check IC901 #23, #24 Check another I Check IC801 Bus Line. Check after Bus Replace Line Open Check Q801 Replace Check D801~D805 Check IC901 #28~31 Check/Replace D801~D805 Replace IC901 Samsung Electronics...
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Check IC901 #23, #24 Check Another I bus line Check After bus line open Check D834 "H" and IC807 Replace Check IC201 #12, #37 Replace Check Q401, Q402 Replace Check IC201 #40, #41, R416, R408, R409, D401, D402 Replace Samsung Electronics...
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Press Play Button Play Indication in (Regulator Inoperative) Display Mechanism (Mechanism Does Not Operation Operate in Play Mode) Does Not Operate or Operates but Stops Soon Video Missing in PB-Video Play Mode See (PB Audio) Audio Missing in Play Mode Samsung Electronics...
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OK but VCR Stops Soon Check CYL FG. (SW 25Hz) ICM601-93 ICM601-24 Capstan (Capstan Does Rotation Not Rotate) PTM601, PTM602, S, T Reel Supply/Take Up Reel Sensor ICM601-99,98 PTM601, PTM602 Deck Loading Motor Prog, SW State ICM601-63,64,65 Mechanism Replace ICM601 Samsung Electronics...
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Load VCR With a Blank Tape and Press Record Button Rec SW Logic Tape Eject Change Tape Replace ICM601 Replace SWM602 D/ REC (H) Check ICM601 ICM601-66 High (Video Missing in REC-Video Record Mode) See (Audio Mising in Record Mode) Samsung Electronics...
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6-15 Fast Forward Mode Inoperative Load VCR With a Tape and Press F.Fwd Button Mechanism (STOP) (Mechanism Does Not State ICM601-63, Operate In Play Mode) 64,65 (F.FWD) (STOP) Capstan Motor (Capstan Does Rotation Not Rotate) (Rotate) Check Mechanism Samsung Electronics...
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6-16 Rewind Mode Inoperative See (Fast Forward Mode Load VCR With Inoperative) a Tape (Rotate) Press Rewind Button Mechanism (STOP) (Mechanism Does Not State ICM601-63, Operate In Play Mode) 64,65 (Rew) (STOP) Capstan Motor See ICM601-25 Rotation (Rotate) Check Mechanism 6-10 Samsung Electronics...
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6-17 Rev Search Mode Inoperative See Play Mode Play Inoperative Operation Press REV Search Button Play Speed Check Mechanism Replace ICM601 Capstan Speed Serach Speed Rec SW Logic Noise Bar Locking Change Tape Replace ICM601 Capstan Motor Replace ICM601 Samsung Electronics 6-11...
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6-18 Cassette Loading Mechanism Does Not Operate Turn the VCR Power On and Insert a Tape Check (Control Pulse) Check Start/End Tape Loading ICM601-76,77 Sensor ICM601 Check ICM601 - 37 Press Eject Button LM B+ Line ICM602-15:LOW Replace Check ICM601 ICM602-13:HIGH ICM602 6-12 Samsung Electronics...
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Troubleshooting 6-19 No Servo Lock Play C-FG Check Start/End ICM601-93 Sensor ICM601 Check CTL Pluse A/C Head ICM601-4 Check CTL Pulse AC Level (SP, LP : Over 2Vp-p) Replace ICM601 Samsung Electronics 6-13...
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CNM603-5 Power Supply AL 5V Check 6V at AL6V CNM603-8 Line of Power Supply Place the VCR In Play Mode Check I-LIMIT. CNM603-3 2.5V RM618 2.5V Check C.M CTL/ Check CNM603-4 RM607, RM604 ICM601 Check Capstan Motor 6-14 Samsung Electronics...
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6-21 Drum Does Not Rotate Check 12V at AL15V Check 12V of Power Supply ICM602-9,21 Place the VCR In Play Mode Faster Check D-FG,D-PG CYL-Speed ICM601-96,97Square Wave Slower Replace (8 MHz) XTM601, CM609, CM610 XTM601 Check Cylinder Motor Samsung Electronics 6-15...
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6-22 Video Missing In Play Mode See (Video Missing Video EE Mode In EE Mode) Operation Place VCR Play Mode Check Video FM In Check ICM301-18 Video Head ICM301-17 Video Check ICM301-20 QM302 Video Check Video Out Line ICM301-29 Replace ICM301 6-16 Samsung Electronics...
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Troubleshooting 6-23 Video Missing In Record Mode Video EE Mode TV Switching Operation Circuit Check Place VCR Record Mode FM-Video Replace ICM301 ICM301-21 FM-Video Check RM313 ICM301-18 Check Video Head Samsung Electronics 6-17...
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Troubleshooting 6-24 Color Missing In Play Mode FM-ENV See (Video Missing ICM301-61 In Play Mode) Color Check S/W 25Hz ICM301-71 ICM601 ICM301-11 Check XTM302 : 4.43MHz Change XTM302 Replace ICM301 6-18 Samsung Electronics...
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Troubleshooting 6-25 Color Missing In Record Mode (VIdeo In) TV Switching Record Mode Circuit Check Check Color Replace XTM301 XTM301 : 4.43MHz ICM301-61 Replace ICM301 FM Signal Check CM351 ICM301-71 Replace ICM301 Samsung Electronics 6-19...
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(Small Signal) Check ICM301 Replace ICM301 pin96 : PB Audio Signal Check ICM501 pin54 Check RM510, RM511, CM528 PB Audio signal Check ICM501 pin56,58 Check ICM501 & Hi-Fi Block out put Audio Check TV NICAM PART(Sound Block) 6-20 Samsung Electronics...
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Check PC 5V Line ICM301 pin 75: Check Replace ICM301 ICM301 pin7 REC audio signal Check Check CM370, RM357, RM358 FLM501 Pin5 REC CM371, CM373, CM372, bias signal QM312, RM359 Check Check A/C CNM302 , Pin5 Head Assembly Replace CNM302 Samsung Electronics 6-21...
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RM501.RM502 & CYLINDER ASSY HI-FI DET MONO MODE ICM501-17PIN CHECK CHECK SIGNAL ICM501-31, 32PIN : CLOCK, DATA ICM501-4,46PIN ICM601-27, 28PIN : CLOCK, DATA OUT PUT SIGNAL CHECK ICM501-56, 58PIN ICM501-8PIN : A-MUTE Check TV NICAM PART REPLACE ICM501 (Sound Block) 6-22 Samsung Electronics...
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6-29 Audio Missing In Rec Mode (Hi-Fi) PLACE VCR IN REC MODE CHECK REC - FM ICM501- 31,32;CLOCK DATA REPLACE ICM501 ICM501-18PIN - 14,20,30,36,51;5V - 60;9V CHECK CHECK TV NICAM PART INPUT SIGNAL ICM501-52, ICM02 61 PIN Check CYLINDER ASSY Samsung Electronics 6-23...
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Schematic Diagrams 11-5 TV MAIN (1/4) : Power Line : Signal Line Samsung Electronics 11-5...
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Schematic Diagrams 11-6 TV MAIN (2/4) TP01 TP02 TP03 TP04 TP05 TP06 : Power Line : Signal Line 11-6 Samsung Electronics...
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Schematic Diagrams 11-7 TV MAIN (3/4) TP01 TP02 TP03 TP04 TP 7 TP 8 TP05 TP06 TP07 TP07 : Power Line : Signal Line Samsung Electronics 11-7...
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Schematic Diagrams 11-8 TV MAIN (4/4) : Power Line : Signal Line 11-8 Samsung Electronics...
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Schematic Diagrams 11-9 TUNER-IF NICAM(STEREO) : Power Line : Signal Line Samsung Electronics 11-9...
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Schematic Diagrams 11-10 2’nd IF(STEREO) : Power Line : Signal Line 11-10 Samsung Electronics...
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Schematic Diagrams 11-11 IF (MONO) 11-12 CRT 11-13 2'nd IF PAL/SECAM-B/G, D/K, I OPTION (MONO) TP01 TP02 TP03 : Power Line : Signal Line Samsung Electronics 11-11...
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Schematic Diagrams 11-14 MASTER 11-15 CONTROL 14”/15” All Model 20”/21” PFC Not Applied 11-16 FRONT-A/V (MONO) 11-17 FRONT-A/V (STEREO) 20”/21” PFC Applied : Power Line : Signal Line 11-12 Samsung Electronics...
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Schematic Diagrams 11-18 Voltages (VTR) ICM301 ICM901 ICM602 PLAY STOP PLAY STOP PLAY STOP ICM601 PLAY REC STOP PLAY REC STOP PLAY STOP PLAY STOP PLAY STOP 12.5 12.5 12.5 12.5 Samsung Electronics 11-13...
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TV SI G-OUT 90~115 CVBS0 TV SO R-OUT 93~118 CVBS1 TV CS B-OUT 97~119 BLACK 0.48 61~62 63~64 IREF IC301 TDA8356 Units : Volts PIN NO PIN NAME VOL T AGES(V ) VD-INPUT VD+INPUT 16.9 OUTPUT 41.5 11-14 Samsung Electronics...