DVD Television Chassis : V18A Model: CFTD2083TX/SMS DVD Television Cassette Recorder CONTENTS Precautions Specifications Disassembly and Reassembly Alignment and Adjustment (Electrical) Troubleshooting Exploded View and Parts List Electric Parts List Block Diagram Schematic Diagrams...
The current measured should the X–ray Protection Specifications Label, and not exceed 0.5 milliamp. Reverse the power- the Product Safety and X-ray Warning Note on plug prongs in the AC outlet and repeat the the service data schematic. test. Samsung Electronics...
Page 4
14. Components, parts and wiring that appear to have overheated or that are otherwise damaged should be replaced with parts that meet the original specifications. Always determine the cause of damage or overheat- ing, and correct any potential hazards. Samsung Electronics...
Page 5
Make sure that the portion around the serviced part has not been damaged. 8. Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument’s ground lead last. Samsung Electronics...
Page 6
These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Samsung Electronics...
Page 7
Be sure to put on a wrist strap grounded to the sheet. Be sure to lay a conductive sheet made of copper etc. Which is grounded to the table. Samsung Electronics...
Page 8
3) Make solder land 2 points short on Pich-up. (See Fig. 1-3) 4) Disassembly the Pick-up. Note : If the assembly and disassembly are not done in correct sequence, the Pick-up may be damaged. PICK-UP ASS'Y SOLDER LAND 2 POINTS SHORT Fig. 1-3 Samsung Electronics...
Disassembly and Reassembly 3. Disassembly and Reassembly 3-1 Disassembly 3-1-1 Back Cover Removal 1. Remove the screws located on the side of the back cover. Samsung Electronics...
Page 12
3. Remove shield case, then take out DVD PCB Assembly. 4. Remove screws from the DVD and VCR Deck. 5. Life up the DVD and VCR Deck, then Remove screws from Main and DVD Interface PCB Assembly. 6. Remove the Main and DVD Interface PCB Assembly. Samsung Electronics...
Page 13
Disassembly and Reassembly 3-1-3 Power Assembly Removal 1. Release two connectors between Power and Main PCB Assembly. 2. Remove screws from the Power Assembly. Samsung Electronics...
Page 14
3-2-1 Top View Œ ´ ˇ ¨ ˆ Ø Fig. 3-1 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...
Page 15
´ 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...
Page 16
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...
Page 17
´ LEVER FL DOOR ˇ HOOK "C" Fig. 3-4 Lever FL Door Removal RAIL [B] Œ HOLDER FL ´ LEVER FL CASSETTEE -R CASSETTEE ASS`Y "A" BOSS [A] Fig. 3-5 Holder FL Cassette Ass’y Removal Samsung Electronics...
Page 21
Lever Tension Drive Removal LEVER LOAD T LEVER LOAD S TIMING POINT 2 TIMING POINT 3 PIN A PIN C PIN D PIN B ˇ SLIDER CAM Fig. 3-14 Gear Loading Drive, Slider Cam, Lever Load S, T Ass’y Assembly Samsung Electronics 3-11...
Page 22
ˇ SPRING BRAKE Œ SPRING TENTION LEVER Œ LEVER S BRAKE ASS`Y HOOK(C) STOPPER "A" HOOK(B) MARK[B] ´ LEVER T BRAKE ASS`Y Fig. 3-16 Lever Tension Ass’y, Band Brake Ass’y Removal Fig. 3-17 Lever Brake S, T Ass’y Removal 3-12 Samsung Electronics...
Page 23
´ DISK T REEL add oil in the boss of Lever Idle Œ. "A" Œ LEVER IDLE ´ GEAR IDLE "B" ´ GEAR IDLE HOOK "C" Fig. 3-19 Disk S, T Reel Removal Fig. 3-18 Gear Idle Ass’y Removal Samsung Electronics 3-13...
Page 24
Fig. 3-21 Lever Up Down Ass’y Removal DETAIL B SPRING GEAR CENTER ASS'Y GUIDE LEVER UP DOWN ASS'Y RING GEAR POST HOOK <GOOD> <BAD> MAIN BASE Fig. 3-20 Holder Clutch Ass’y Removal Fig. 3-22 Lever Up Down Ass’y Removal 3-14 Samsung Electronics...
Page 25
Œ GUIDE CASSETTE DOOR the post pinch roller. HOOK [A] Œ LEVER UNIT PINCH ASS`Y ´ PLATE JOINT ˇ SPRING PINCH DRIVE Fig. 3-23 Guide Cassette Door Removal Fig. 3-24 Lever Unit Pinch Ass’y, Plate Joint, Spring Pinch Drive Removal Samsung Electronics 3-15...
Page 26
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. 3-26 FE Head Removal Fig. 3-25 Lever #9 Guide Ass’y Removal 3-16 Samsung Electronics...
Page 27
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. 3-28 Slider S, T Ass’y Removal Fig. 3-27 ACE Head Removal Samsung Electronics 3-17...
Page 28
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. 3-31 Level Head Cleaner Ass’y Removal Fig. 3-29 Plate Ground Deck, Cylinder Ass’y Removal 3-18 Samsung Electronics...
Page 29
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.3-33) ˇ MOTOR CAPSTAN ASS'Y Fig. 3-32 Damper Capstan,Motor Capstan Ass’y Removal FRAME Fig. 3-34 Samsung Electronics 3-19...
Page 30
Fig. 3-4-1 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. 3-4-2 Tape Travel Diagram 3-20 Samsung Electronics...
Page 31
Fig. 3-5-1 Location of ACE Head Adjustment Screw ADJUSTMENT 1) See = (Alignment and Adjustment) for ACE AUDIO HEAD Head position (X-Point) adjustment. VIDEO HEAD 0 ~ 0 .25 mm CONTROL HEAD Fig. 3-5-2 ACE Head Height Adjustment Samsung Electronics 3-21...
Page 33
) driver to obtain a flat video RF envelope as shown in Fig. 3-8. IDEAL ENVELOPE S HEIGHT TOO HIGH S HEIGHT TOO LOW T HEIGHT TOO HIGH T HEIGHT TOO LOW GUIDE ROLLER S GUIDE ROLLER T Fig. 3-5-6 Guide Roller S, T Height Adjustment Samsung Electronics 3-23...
Page 34
145 ± 30 Cassette Torquemeter mode. 4) Transportation of accurate driving force is done by gears. (Gear Center Ass’y) Note : If the spec. does not meet the followings specifications, replace the holder clutch ass’y and then recheck. 3-24 Samsung Electronics...
Page 35
(3) Pull the Tray Disc ¨ to disassemble , while simultaneously pushing 2 Stoppers ˆ (left, right) in the direction arrow “C”, “D”. STOPPER SLIDER HOUSING TRAY DISC SCREW DRIVER EMERGENCY HOLE STOPPER Fig. 3-7-1 Tray Disc Removal Samsung Electronics 3-25...
Page 36
3-7-2 Assy P/U Deck Removal (1) Disconnect DCN2 Œ, DCN3 ´. (2) Lift down the Assy P/U Deck ˇ while simultaneously pushing 2 Hooks ¨, ˆ in the direction of arrow “A”, “B”. Fig. 3-7-2 Assy P/U Deck Removal 3-26 Samsung Electronics...
Page 37
Motor Load Assy (7) Push the 3 Hooks bottom side in the direction arrow “C” and lift up the Housing PCB (8) Push the Hooks and remove Deck PCB "C" "C" "C" Fig. 3-7-3 Housing Ass’y Removal Samsung Electronics 3-27...
Page 38
Disassembly and Reassembly 3-7-4 Sub Chassis Removal (1) Remove the Soldering of Motor Feed (+,- wire) (2) Remove the 4 Screws (3) Lift up the Ass’y Brkt Deck Fig. 3-7-4 Sub Chassis Removal 3-28 Samsung Electronics...
Page 39
, Gear Feed A (3) Remove 2 Screws (4) Remove Shaft Pick-Up and Pick-Up Assy (5) Remove 1 Screw (6) Remove 2 Screws (7) Remove 3 Spring Spindle and Motor Spindle Ass’y Fig. 3-7-5 Ass’y Brkt Deck Removal Samsung Electronics 3-29...
Adjustment, Option Bytes and Reset. is cancelled. 3. Access the Adjustment Mode by pressing the “SELECT” keys ( ). The adjustment para- meters are listed in the accompanying table, and selected by pressing the “SELECT” keys (s,t). Samsung Electronics...
Page 41
This pattern is used for pre-heating the CRT during manufacturing-it is accessed in the factory by twice pressing the “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 epresing the “FACTORY” key. Samsung Electronics...
Page 42
Function : “9” -> Head Switch Auto Adjustment. “5” -> Env Center point Auto Adjustment. “TRK + “ -> Env max point Adjustment. “TRK - “ -> Env min point Adjustment. * Cancellation : pull out power cord. Samsung Electronics...
Page 43
2. Turn on the TV. Set the Brightness and Contrast controls to minimum (zero beam current). 3. The high voltage should not exceed 30KV. 4. Adjust the Brightness and contrast controls to both extremes. Ensure that the high voltage does not exceed 30KV under any conditions. Samsung Electronics...
Page 44
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...
Page 45
4. LO CPIN (EWLC) : 29" Only 6. TILT (TC) 5. V S CORRECTION (SC) 7. H POSITION (NHS) 8. AFC BOW (HB) 9. H SIZE(EWI) 10. AFC ANGLE (HP) 11. PIN COMP (EWP) 12. V POSITION (NVS) Samsung Electronics...
Page 46
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. 4-4-7 (B) LOW-LIGHT ADJUSTMENT 1. Automatically accomplished during the high-light adjustment. Samsung Electronics...
Page 47
Superimpose the red and the blue vertical (Fig. 5-3). lines in the center area of the screen. RED/BLUE GREEN BLUE BLUE RED/BLUE GREEN 6-Pole Magnet Movement 4-Pole Magnet Movement Fig 5-3 Center Convergence Adjustment Samsung Electronics...
Is IC801S Pin 3 Output Voltage 5V? 19~22V? Check IC801S Check/Replace DZ801,DZ804, Is Q901-E DZ802,PC801S Voltage 3.3V? Check/Replace Q901, DZ901, D901 Check Q811-B is High when power is On (about 0.6~2.0v) Check/Replace IC902 Check /Replace Q810, Q812, DZ805 Samsung Electronics...
Page 51
A+13.5V Line Check Amp Mute Pin(High:#6,#7) In Power Board Check/Replace Q601&A-Mute Check Tone Control IC601 #21,#22 In Main Board Check/I Line IC902 #71, #72 Check ICM501 L,R out check and SIF Input check Check/Replace ICM501&HIFI/ TM Block Check/Replace Speaker Samsung Electronics...
Page 52
5-7 No Picture (Sound OK) Check the Brightness, Contrast and Color adjustments 2. Check: AV Picture 3. See Signal Block Diagram 5-8 No Sound (Picture OK) 1. Check the Volume adjustment level. 2. Check AV Video 3. See Signal Block Diagram Samsung Electronics...
Page 54
ICM301 (Serial Data) Pin 2, 3 Abnormal Check Serial Line & Abnormal ICM601 Abnormal Check the B 5V Check the B 5V line of ICM301 Pin 77 Normal Abnormal Check AC head Replace ICM301 line and CNM302 Samsung Electronics...
Page 55
Env ICM501 C Data) Pin 30 Abnormal Check the I C Line Abnormal ICM601 Pin 66,67 Abnormal Check the B5V/B9V Check the B5V/B9V line of ICM501 Pin25,40,58 Normal Abnormal Check Rotaly Head Replace Head Drum line and CNM301 Samsung Electronics...
Page 56
Pin 9 Normal Abnormal Check the bias signal Replace ICM301 ICM301 Pin 6 Normal Abnormal Check the REC bias Check CNM302 signal of FLM301 Pin 4, 5, 6 Normal Normal Check AC head Abnormal Check/Replace FLM301, QM304, QM302 Samsung Electronics...
Page 57
Check the FM of ICM501 Pin 29 signal of ICM501 (DM501(+)) High Pin 21 Abnormal Normal Check the ICM601 Pin 68 Abnormal Check the I C Line Check the ICM601 ICM501 Pin 42,43 Normal Check/Replace CNM301&Head Drum 5-10 Samsung Electronics...
Page 58
Refer to "Capstan Check the rotation doesn't Rotate" of capstan Normal Abnormal Check PTM602, PTM601, Check ICM601 T-Reel takeup sensor Pin 98,99 Normal Check Stop Mode Check the ICM601 Pin 34,35,36 loading motor ( PROG, SW) Normal Replace ICM601 Samsung Electronics 5-11...
Page 59
ICM601 Pin 73 the tape takeout the REC mode (REC SW) Normal Normal Check the tape Check if Abnormal the voltage of ICM601 Check ICM601 Pin 33 is high (D REC) Normal Refer to "No REC Screen" 5-12 Samsung Electronics...
Page 60
Refer to "REW Not operated" operation Normal Check Stop Refer to "Deck doesn't ICM601 Pin 34,35,36 Operated during playback" (PROG. SW) FF/REW Abnormal Check Refer to the rotation of "Capstan doesn't rotate" capstan Normal Check the Deck. Samsung Electronics 5-13...
Page 61
Abnormal Check Abnormal the control pulse Readjust the height if the noise bar is fixed of ICM601 Pin 88,89 of A/C head Normal Normal Check the B + Check/Replace ICM601 Capstan Motor Normal Check the capstan motor 5-14 Samsung Electronics...
Page 62
Replace ICM601 Check Abnormal Abnormal the control pulse Readjust the height Check for noise bar of ICM601 Pin 88,89 of A/C head Normal Normal Check the B + Check/Replace ICM601 Capstan Motor Normal Check the capstan motor Samsung Electronics 5-15...
Page 63
Check the B + terminal Abnormal Check the voltage of of loading motor ICM603 Pin 9,21 (B 12V) Normal Check of ICM603 Abnormal Replace ICM603 Pin 3 (B5V)& Pin 7,8 (DPG,FG) Normal Check ICM601 Pin 34,35,36 Normal Check/Replace the loading motor 5-16 Samsung Electronics...
Page 64
Check Abnormal Abnormal Check CNM602 the capstan PWM CTL Replace ICM601 Pin 4 (2.5V) at ICM601 Pin 10 Normal Check Abnormal Check the B+5V Line the voltage of CNM602 Pin 8 (5V) Normal Check the capstan motor Samsung Electronics 5-17...
Page 65
Insert a tape and set to the PLAYBCAK mode Check (Fast/Slow) Check the rotation speed the PWM at ICM601 of cylinder Pin 9 (Slow) Normal Check Abnormal the cylinder motor Check the voltage of ICM601 B+ Normal Check XTM601 (8MHz) 5-18 Samsung Electronics...
Page 66
Replace ICM301 Check Abnormal Check the output of video the video signal at signal at CM354 ICM301 PIn 34 Normal Check Abnormal the video output Replace ICM301 signal at ICM301 Pin 26 Normal Check IC902(UOC) neighbor circuits Samsung Electronics 5-19...
Page 67
ICM301 Pin72, Check the high voltage of ICM301 Pin 73 has the 74 has the FM video IC901 Pin 54, 55, 56 (D-REC) FM video signal signal Normal Normal Check the video Replace ICM301 head (DRUM) 5-20 Samsung Electronics...
Page 68
ICM301 Pin 52, 44, 23 ENVE Signal Normal Normal DRUM Check Check the Abnormal Check Pin 57 (Rotary) ICM301 Pin 39 has the color signal Normal Check Abnormal XTM301 ICM301-50 OSC : Replace 3.57MHz 30Hz Normal Replace ICM301 Samsung Electronics 5-21...
Page 69
ICM301 Pin 46 has Replace XTM301 (3.5795MHz 30Hz) the color signal Normal Normal Replace ICM301 Check Abnormal Check connecting pattern the color DET signal of and Pin 57 (Rorary SW) ICM301 Pin 39 Normal Replace ICM301 5-22 Samsung Electronics...
Page 70
Troubleshooting 5-29 DVD Block Samsung Electronics 5-23...