Samsung CXD2512 Service Manual
Samsung CXD2512 Manual
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- Samsung CXD2512 | Service Manual - Page 1
-25 I MODEL : CXD2512/AUCX, CXD2514/AUCX CXD2512/ACCX, CXD2514/ACCX SERVICE Manual Television Video Cassette Recorder CONTENTS 1. Precautions 2. Specifications 3. Disassembly and Reassembly 4. Alignments and Adjustments (Mechanical) 5. Alignments and Adjustments (Electrical) 6. Troubleshooting - Samsung CXD2512 | Service Manual - Page 2
servicing , including: nonmetallic control knobs and compartment handle brackets, metal cabinets, screwheads and control shafts. The current measured should not exceed must be measured each time servicing is done on the be reconfirmed whenever they are serviced. (X-ray protection circuits also may - Samsung CXD2512 | Service Manual - Page 3
Example: Do not add auxiliary audio or video connectors. Such alterations might create a safety serviced only if an isolation transformer inserted between the receiver and the power source. 13. Some TV from visual inspection. These safety features and the protection they give Samsung Electronics - Samsung CXD2512 | Service Manual - Page 4
section of this manual. if some unforeseen circumstance creates a conflict between the servicing and safety' AC plug and accessible conductive parts (examples: metal panels, input terminals and earphone jacks). 6. Insulation Checking Procedure: Disconnect the an ESD. Samsung Electronics 1-3 - Samsung CXD2512 | Service Manual - Page 5
VIDEO Input Signal-to-Noise Ratio Horizontal Resolution AUDIO Input Horizontal Resolution Frequency Response SP -6dB LP -6dB SLP -6dB TV with T-120 Video: 2 rotary heads (CXD2512)/ 4 rotary heads(CXD2514) Audio/Control: 1 stationary head Erase: 1 full track erase 1 audio track erase VIDEO IN jack ( - Samsung CXD2512 | Service Manual - Page 6
3. Disassembly and Reassembly 3-1 Disassembly 3-1-1 Back Cover Removal O to 00 1. Remove the screws located on the side of the back cover. 2. Pull the Main Assembly backward and remove it from the mainframe. Samsung Electronics 34 - Samsung CXD2512 | Service Manual - Page 7
3-1-2 Main Assembly Removal 1. Release two connectors between Sub PCB and Main Assembly. 2. Pull the Main Assembly backward. Remove it from the Main Frame. 3-2 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 8
3-1-3 Monitor Frame Removal 3 • "• 14/.„. 151 I se Ise 0 .0 0 • o O • 0 St ' • 0 O 1. Remove 2 screws from the Main Assembly. Remove the dust cover. 2. Remove 2 screws from the Deck Assembly. Remove the dust-cover bracket . Samsung Electronics 3-3 - Samsung CXD2512 | Service Manual - Page 9
. Take off the deck assembly 1. Remove 2 screws holding the upper chassis housing. 2. Remove 3 screws holding the deck assembly. 3. Lift the deck assembly upward to remove. 3-4 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 10
24.-Gear relay "S" ass'y 25. Brake main "U' ass'y 26. Reel disk "L" ass'y 27. Lever REC switch 28. Spring REC switch 29. Arm tension full assembly Samsung Electronics 4-1 - Samsung CXD2512 | Service Manual - Page 11
"L" ass'y S. Slide main (white for X-5) 8. Slide main (black for X-5) 9. Lever REC switch 10. Lever idler change 11. Clutch assembly 12. Unit loading 15. Gear master 4-2 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 12
4-1-3 Housing View • 6 1. Chassis side "L" assembly 2. Upper chassis 3. Chassis side "R" assembly 4. Shaft arm assembly 5. Holder cassette assembly. 6. Lever door assembly Fig. 4-34 Samsung Electronics 4-3 - Samsung CXD2512 | Service Manual - Page 13
the direction of arrow 'B' while pushing the tab ® in the direction of arrow 'A'. Refer to detail drawing. THREE SCREWS e e 'C► • • B o© eTAB MAIN BASE el A DETAIL Fig. 4-4 4-4 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 14
4-2-2 Disassembly TWO SCREWS CHASSIS UPPER CHASSIS SIDE 'C 8 SHAFT ARM ASSEMBLY HOLDER CASSTTE ASSEMBLY CHASSIS SIDE " R" Fig. 4-5 Samsung Electronics 4-5 - Samsung CXD2512 | Service Manual - Page 15
2 tabs ®, C) in the direction of arrows 'A', 'B'. Refer to detail drawings 'A' and 'B'. TWO SCREWS • 4. „?' -0 CHASSIS UPPER Cr • • CHASSIS UPPER 2 TAB B 4 CHASSIS UPPER TAB DETAIL "A" DETAIL "B" Fig. 4-6 4-6 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 16
direction of arrows 'B' and 'C. Refer to Fig. B. HOLDER CASSETTE t ASSEMBLY 0 (B) (REASSEMBLY OF CHASSIS SIDE " R " & SHAFT ARM "R") CHASSIS SIDE "L" ® SHAFT ARM ASSEMBLY 0 0 C (SIDE .VIEW) / DETAIL 0 p Samsung Electronics ©CHASSIS SIDE "R" Fig. 4-7 (C) 4-7 - Samsung CXD2512 | Service Manual - Page 17
the shaft arm assembly is in eject mode. (SIDE VIEW "A") SPRING - LID OPENER LEVER - LID OPENER CHASSIS SIDE "R" O •11, ,/.0 1 SLIDER -DAMPER SPRING -SLIDE DAMPER Fig. 4-8 4-8 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 18
tab (as shown in the detail drawing). QI SPRING SLIDE DAMPER ® SLIDE DAMPPER STOPPER ®CHASSIS SIDE UR" 0 • 10 CHASSIS SIDE "R" TAB SLIDE DAMPER DETAIL Fig. 4-9 Samsung Electronics 4-9 - Samsung CXD2512 | Service Manual - Page 19
4-3 Cylinder Assembly 4-3-1 Exploded View of Cylinder Assembly ONE SCREW HEAD BRUSH (ASSEMBLY) fa CYLINDER SUB ASSEMBLY HOLDER F.P.0 40 • • MOTOR - STATOR THREE SCREWS O as 4-10 MOTOR -ROTOR RETAINER RUBBER ASSEMBLY TWO SCREWS CYLINDER BASE THREE SCREWS Fig. 4-10 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 20
4-3-2 Stopper Tape Removal 4-3-2 (a) Stopper Tape Removal (For DX5-R only) 1. Release 1 tab C) in the direction of arrow A. Refer to the detail drawing. 2. Lift the stopper tape C) in the direction of arrow 'B'. ® STOPPER TAPE ()TAB DETAIL Fig. 4-11 Samsung Electronics 4-11 - Samsung CXD2512 | Service Manual - Page 21
Base 1. Remove 3 screws (D holding the main base and the cylinder assembly. 2. Lift the cylinder assembly C) in the direction of arrow. 3. Note: Do not touch the video heads during removal or installation. THREE SCREWS 2 CYLINDER ASSEMBLY Fig. 4-12 412 - Samsung CXD2512 | Service Manual - Page 22
FPC. (The FPC cable is very short.) ONE SCREW HEAD BRUSH (ASSEMBLY) oe HOLDER FPC O 4 CYLINDER BASE CYLINDER BASE HOLDER - F.P.0 TAB (BOTTOM VIEW) Fig. 4-13 Samsung Electronics 4-13 - Samsung CXD2512 | Service Manual - Page 23
4-3-5 Cylinder Assembly Removal From Cylinder Base 1. Remove 3 screws ci) from the cylinder base C). 2. Lift the cylinder assembly C) from the cylinder base @ in the direction of arrow. 0 0 3 CYLINDER ASSEMBLY 2 CYLINDER BASE THREE SCREWS Fig. 4-14 4-14 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 24
4-3-6 Motor Rotor Removal 1. Remove 2 screws C). 2. Lift the retainer rubber assembly 0 and the motor rotor ®. PHASE MATCHING -HOLE TWO SCREWS RETAINER RUBBER ASSEMBLY 3 MOTOR ROTOR 4 MOTOR STATOR 5 CYLINDER SUB ASSEMBLY Fig. 4-15 Samsung Electronics 4-15 - Samsung CXD2512 | Service Manual - Page 25
rubber assembly C) and secure it with 2 screws. PHASE MATCHING -HOLE TWO SCREWS RETAINER RUBBER ASSEMBLY 3 MOTOR ROTOR 4 MOTOR STATOR 5 CYLINDER SUB ASSEMBLY Fig. 4-16 4-16 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 26
4-3-8 Motor Stator Removal 1. Remove 3 screws C). 2. Remove the motor stator C) from the cylinder sub assembly ®. THREE SCREWS 0 MOTOR STATOR • O 0 • 3 CYLINDER SUB ASSEMBLY Fig. 4-17 Samsung Electronics 4-17 - Samsung CXD2512 | Service Manual - Page 27
4-3-9 Motor Stator and Cylinder Subassembly 1. Reinstall the motor stator C) toward the FPC cable of cylinder subassembly C). 2. Secure with 3 screws. Imo] 0 0 MOTOR STATOR CYLINDER SUB ASSEMBLY Fig. 4-18 4-18 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 28
4-4 Main Deck Removal and Reassembly 4-4-1 Slide Rack Housing Removal 1. Lift the slide rack housing in the direction of arrow. SLIDER RACK HOUSING a 0 e Fig. 4-19 Samsung Electronics 4-19 - Samsung CXD2512 | Service Manual - Page 29
rack housing. Refer to liming point. TIMING SLOTII 0 TOOTH# I DETAIL GEAR MASTER 0 (SIDE VIEW SLIDER RACK 0 HOUSING (TOP VIEW) O 0 O ARM "R" (SIDE VIEW) Fig. 4-20 4-20 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 30
4-4-3 Brake Sub "I: Removal 1. Remove the spring brake sub Q. 2. Release the tab C) in the direction of arrow. Refer to detail drawing. 3. Lift the brake sub '1; SPRING BRAKE SUB "L" 3 BRAKE - SUB "C 2 TAB 3 BRAKE - SUB"L" DETAIL Fig. 4-21 Samsung Electronics 4-21 - Samsung CXD2512 | Service Manual - Page 31
. Refer to detail drawing. 3. Lift the arm tension full assembly 0. SPRING - TENSION C ARM - TENSION FULL ASSEMBLY TAB a ARM -TENSION FULL ASSEMBLY DETAIL Fig. 4-22 4-22 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 32
sure to install the reel disk 'L' assembly C) after installing the washer, plain 0. V-- Q ONE SCREW (1) LEVER JOG ASSY TIMING LEVER JOG ASSY < TOP VIEW > Fig. 4-23 Samsung Electronics 4-23 - Samsung CXD2512 | Service Manual - Page 33
arrow. Refer to detail drawing. 3. Lift the brake sub 'R assembly O. 3 BRAKE -SUB "R" ASSEMBLY SPRING - BRAKE SUB "R" ©TAB Ca) 3 BRAKE -SUB "R" ASSEMBLY DETAIL Fig. 4-24 4-24 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 34
disk 'R' assembly C) after installing the washer, plain C). ()WASHER - SLIT GEAR - RELAY "T" 0 .... 441 . C6-- REEL - DISK ASSEMBLY WASHER - PLAIN ®TAB REEL - DISK "R" ASSEMBLY DETAIL Fig. 4-25 Samsung Electronics 4-25 - Samsung CXD2512 | Service Manual - Page 35
the brake main 'R' ®. BRAKE - MAIN " L" ASSEMBLY SPRING - BRAKE MAIN 5 BRAKE - MAIN "R" ASSEMBLY O a TAB BRAKE - MAIN "L " ASSEMBLY DETAIL "A" Fig. 4-26 4 TAB BRAKE - MAIN "R" ASSEMBLY DETAIL "B" 4-26 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 36
4-4-9 Idler Assembly Removal 1. Remove the washer slit C). 2. Lift the idler assembly C). @ WASHER - SLIT IDLER - ASSEMBLY Fig. 4-27 Samsung Electronics 4-27 - Samsung CXD2512 | Service Manual - Page 37
4-4-10 Unit Pinch Roller Assembly Removal 1. Remove the washer slit 0. 2. lift the unit pinch roller ®. 3. Lift the spring arm pinch C). WASHER - SLIT 0 UNIT - PINCH ROLLER 3 SPRING - ARM PINCH 0 Fig. 4-28 4-28 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 38
4-4-11 Assembly of Unit Pinch Roller 1. Install the unit pinch roller as shown in the figure. Refer to A, B SLIDER - PUSH MOTOR-D.D CAPSTAN O 0 UNIT - PINCH ROLLER (TOP VIEW) Fig. 4-29 SLIDER - PINCH Samsung Electronics 4-29 - Samsung CXD2512 | Service Manual - Page 39
4-4-12 Exploded View of Lever Pinch Component Assembly Lever Pinch Cam, Ann Review Assembly and Lever Review Assembly LEVER - PINCH CAM LEVER - PINCH COMP ASSEMBLY ARM - REVIEW ASSEMBLY rt4in1 LEVER - REVIEW Fig. 4-30 4-30 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 40
removal, do not touch the lever pinch comp assembly C) to audio head base. 2 LEVER - PINCH COMP ASSEMBLY LEVER - PINCH COMP ASSEMBLY 0 TAB DETAIL Fig. 4-31 Samsung Electronics 4-31 - Samsung CXD2512 | Service Manual - Page 41
4-4-14 Lever Pinch Cam Removal 1. Release the tab Q in the direction of arrow. Refer to the detail drawing. 2. Lift the lever pinch arm C). 2 LEVER - PINCH CAM C.) at @TAB 2 LEVER -PINCH CAM DETAIL Fig. 4-32 4-32 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 42
to the 'B' part of detail drawing 'A'. (i) ARM-REVIEW ASS'Y QQ STOPPER TAB 0 TAB - Samsung CXD2512 | Service Manual - Page 43
4-4-16 Lever Review Removal 1. Release the tab C) in the direction of the arrow. 2. Lift the lever review 0. 6 0 LEVER - REVIEW DIA O I DETAIL Fig. 4-34 4-34 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 44
4-4-17 Belt Capstan Removal 1. Remove the belt capstan C). 2. Note: Take extreme care not to touch the grease when removing or reinstalling. BELT - CAPSTAN Fig. 4-35 Samsung Electronics 4-35 - Samsung CXD2512 | Service Manual - Page 45
of arrow. Refer to detail drawing. 3. Lift the brake capstan assembly C). ® SPRING - BRAKE CAPSTAN 3 BRAKE CAPSTAN ASSEMBLY e 2 TAB 3 BRAKE CAPSTAN ASSEMBLY DETAIL Fig. 4-36 4-36 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 46
4-4-19 Motor D.D Capstan Removal 1. Remove 3 screws C)(top view). 2. Lift the motor D.D capstan C) in the direction of arrow (bottom view). (2) MOTOR D.0 CAPSTAN < BOTTOM VIEW > a 0 S (I) THREE SCREWS Fig. 4-37 Samsung Electronics 4-37 - Samsung CXD2512 | Service Manual - Page 47
4-4-20 Clutch Assembly Removal 1. Remove the washer slit C). 2. Lift the clutch assembly 0. 3. Remove the washer plain C). ()WASHER - SLIT 0 CLUTCH - ASSEMBLY 3 WASHER - PLAIN ii Fig. 4-38 4-38 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 48
4-4-21 Gear Master Removal 1. Remove the washer slit Q. 2. Lift the gear master ®. WASHER - SLIT GEAR - MASTER Fig. 4-39 I Samsung Electronics 439 - Samsung CXD2512 | Service Manual - Page 49
4-4-22 Assembly of Gear Master 1. When reinstalling, be sure to align the arrow mark of gear master 0 with gear home of gear worm wheel C). Refer to timing point. TIMING GEAR MASTER 2 GEAR - WORM WHEEL O UNIT - LOADING o Fig. 4-40 4-40 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 50
4-4-23 Unit Loading Removal 1. Remove the 2 screws Q. 2. Lift the unit loading C) in the direction of the arrow. I TWO SCREWS a eto UNIT - LOADING S Fig. 4-41 Samsung Electronics 4-41 - Samsung CXD2512 | Service Manual - Page 51
4-4-24 Lever Slide Pinch Removal 1. Remove the washer slit O. 2. Lift the lever slide pinch (:). O WASHER SLIT 2 LEVER - SLIDER PINCH 6 Fig. 4-42 4-42 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 52
0 into the hole of lever slide pinch ®. Refer to 'N part. SLIDER - PINCH LEVER - SLIDER PINCH E3 i U1 3 SLIDER - MAIN SLIDER PINCH BOSS Fig. 4-43 rTh Samsung Electronics 4-43 - Samsung CXD2512 | Service Manual - Page 53
4-4-26 Slide Main Removal 1. Remove the washer slit G. 2. Release 3 tabs C), C) and C) in the direction of the arrow. 3. Lift the slide main (:). SLIDER - MAIN O WASHER -SLIT Is TAB 0 TAB ®TAB Fig. 4-44 4-44 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 54
of the main slide hole and secure with the washer slit ®. 2. Insert the lever tension control Quid the lever idler change ® into the slide main hole. Refer 3. After confirming the above ASSY 0 0 • SLIDER MAIN C) LEVER IDLER CHANGE ® LEVER TENSION CONTROL 0 • Fig. 4-45 Samsung Electronics 4-45 - Samsung CXD2512 | Service Manual - Page 55
the lever shift C). SPRING LEVER - SHIFT LEVER - SHIFT a) LEVER - SHIF \ ri CLAW 0 SPRING LEVER -SHIFT DETAIL "A TAB 000 0 SPRING LEVER -SHIFT DETAIL "B" Fig. 4-46 4-46 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 56
4-4-29 Lever Idler Change Removal 1. Release the tab C) in the direction of the arrow. 2. Lift the lever idler change C). 2 LEVER - IDLER CHANGE Coe 0 LEVER-IDLER CHANGE p (BOTTOM SIDE) MAIN BASE) 0 TAB 111 (TOP SIDE) Cb] DETAIL Fig. 4-47 Samsung Electronics 4-47 - Samsung CXD2512 | Service Manual - Page 57
Refer to detail drawing A'. 2. Remove the gear loading '12 assembly ® from the slide guide roller © by pushing the spring loading 'L' ® in the direction of the arrow. GEAR- LOADING"L" ASSEMBLY CD SPRING-LOADING(R) DETAIL "A" ® SPRING - LOADING ( L) DETAIL "B" Fig. 4-48 4-48 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 58
!MI 4-4-31 Assembly Gear Loading "1", "R" Assembly 1. When reinstalling, be sure to align the 2 arrows as shown in the figure. Refer to timing point. TIMING ALIGN TWO ARROVVS GEAR LOADING R" ASSEMBLY O EAR - LOADING "L" ASSEMBLY O Fig. 4-49 Samsung Electronics 4-49 - Samsung CXD2512 | Service Manual - Page 59
4-4-32 Slide Pinch Removal 1. Push the tab C) in the direction of arrow 'A'. Refer to detail drawing. 2. Lift the slide pinch ® in the direction of arrow 'B'. 0 SLIDER- PINCH et MAIN-BASE TAB DETAIL a is Fig. 4-50 4-50 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 60
tab ® in the direction of arrow B. Refer to detail drawing. (1) SPRING SLIDER PUSH(I)SLIDER PUSH EM CD TAB (2) SLIDER PUSH Fig. 4-51 Samsung Electronics 4-51 - Samsung CXD2512 | Service Manual - Page 61
of the arrow. Refer to detail drawing. 3. Lift the lever record switch ®. O SPRING - REC S/W O LEVER - REC S/W MAIN BASE 3 LEVER - REC SAN O eTAB DETAIL Fig. 4-53 Samsung Electronics 4-53 - Samsung CXD2512 | Service Manual - Page 62
4-4-36 Full Erase Head Removal 1. Remove the 1 screw C). 2. Lift the magnet F/E head (:). ONE SCREW MAGNET - F/E HEAD *ID Fig. 4-54 4-54 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 63
during the adjustment. -BONE SCREW L IM @TAB +a HOLDER ACE DETAIL "A" MAGNET - ACE HEAD ALL (ASSEMBLY) X - POSITION ADJUST Zit ACE HEAD BASE DETAIL"B" TIMING Fig. 4-55 Samsung Electronics 4-55 - Samsung CXD2512 | Service Manual - Page 64
cylinder assembly from the main base. 2. Remove the slide 'St, 'T' from the gear loading 'L', 'R' assembly. 3. Move the guide roller '9, 'T assembly to slot and then lift it to remove. Refer to arrow. SLIDER-G/R----1 ASSEMBLY(S) L -I I I I I I I _ J 1----1 I I I I I i I I I I I 1-4,41 - Samsung CXD2512 | Service Manual - Page 65
U 4-4-39 Slide Guide Roller "S", 'T' Assembly (all parts except cylinder assembly removed) 1. Push C) toward arrow 'A'. 3. Load the gear loading L, R assemblies ®, C) to the middle position of guide rail by turning the gear master ® toward arrow 'A'. 4. Turn the gear master ® toward arrow 'A' - Samsung CXD2512 | Service Manual - Page 66
4-4-39 Slide Guide Roller "S", "T" Assembly (Continued): All parts except cylinder assembly removed. SLIDER - G/R ASSEMBLY (S) SLIDER - G/R ASSEMBLY (T) 0 0 GEAR - LOADING "L" ASSEMBLY ,Ot .141;:: h oo *ow 't' GEAR - WADING "R" ASSEMBLY Fig. 4-58 4-58 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 67
All tape guide posts 3. Clutch pulley 4. Pinch roller 5. Belt capstan 6. Capstan motor pulley 4-5-2 Cleaning of Rotating and Stationary Heads To clean the video , full-erase head and audio/control (A/C) heads, approximate grease or oil as indicated on the exploded view. Samsung Electronics 4-59 - Samsung CXD2512 | Service Manual - Page 68
the tape guide is used as the basic reference for the transport HEAD REVIEW GUIDE POLE! ri3 GUIDE SHAFT! TENION POLE #1 GUIDE POLE CAM TENSION AZIMUTH SCREW #8 GUIDE SHAFT' PINCH ROLLER GUIDE ROLLER S POLE TENSION GUIDE ROLLER T #8 GUIDE SHAFT REVIEW POLE 1 -m- 11 M I M I #GUIDE POLE #GUIDE SHAFT - Samsung CXD2512 | Service Manual - Page 69
tape guides. 2. If tape wrinkle occurs at the S, T-guide rollers, turn the S,T-guide rollers still observed at the tape guide, perform the tilt adjustment of edge and the lower edge of the control head is about 0.25mm. (See Head Adjustment Screw VIDEO TAPE AUDIO HEAD CONTROL HEAD 0 0.25mm - Samsung CXD2512 | Service Manual - Page 70
SW PULSE -Time/div. ; 5msec CH-1 PROBE CTL PULSE 4 _ 04 4H'd : 14.5msec : 0.5mesc Fig. 4-64 Tracking Preset Adjustment REMOTE BUTTONS PUSH A FINE V A FINE ,V PUSH CONTROL PULSE REMOVE ni. (BAD) (GOOD) Fig. 4-63 Tape Guide Check Fig. 4-65 Control Pulse Adjustment 4-62 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 71
of Scope • -Volt/div. ; CH-1 = 0.1V CH-2 = 0.2V CH-2 PROBE H'D SW PULSE -Time/div. ; 5msec CH-1 PROBE CTL PULSE 4H'd : 6.5msec 2H'd : Omsec REMOTE BUTTONS PUSH A TRACKING V A TRACKING PUSHV CONTROL PULSE REMOVE Fig. 4-66 Tracking Preset and Control Adjustments Samsung Electronics 4-63 - Samsung CXD2512 | Service Manual - Page 72
b = Minimum output of the video RF envelope at the entrance side. c = Minimum output of the video RF envelope at the center point. d = Maximum output of the video RF envelope at the exit side. A 4-64 HID SW PULSE ENVELOPE SET SCREW -GUIDE ROLLER Fig. 4-68 Adjustment Points Samsung Electronics - Samsung CXD2512 | Service Manual - Page 73
4-6-3 S, T-Guide Rollers Adjustment (Continued) Dc0 IDEAL ENVELOPE ciao L HEIGHT TOO HIGH cCD L HEIGHT R HEIGHT TOO LON TOO HIGH R HEIGHT TOO LON GUIDE ROLLER(L) GLEE ROLLER(R) Fig. 4-69 S, T-Guide Roller Height Adjustments Samsung Electronics 4-65 - Samsung CXD2512 | Service Manual - Page 74
gap, readjust the supply-guide roller. 3. Change unit using a T-120). The video envelope should meet the specification shown in tape wrinkle at each guide. 2. If excessive guide-rollers. Do an A/C head Assembly coarse adjustment if the tape wrinkle occurs at the tape-guide flange. Fig. 4-70 Video - Samsung CXD2512 | Service Manual - Page 75
g.cm, (PAL: 40 - 47 g.cm) 4. Counterclockwise: TORQUE UP Clockwise: TORQUE DOWN F/E HEAD ARM - TENSION FULL ASSEMBLY CAM TENSION ADJUST SPRING TENSION 0 1- e TENSION BAND Fig. 4-72 Samsung Electronics BACK TENSION METER (STOCK NO. 156391 ) A S Fig. 4-73 4-67 - Samsung CXD2512 | Service Manual - Page 76
-p color bar signal to the video input. 2. Push the LINE IN button on the remote control to enter the Line mode. remote control simultaneously. 3. Connect a dual-trace oscilloscope the SW Pulse TP08 and the Video sync in video signal. SW30Hz PULSE,-SWITCHING POINT A A V.SYNC VIDEO OUTPUT IT - Samsung CXD2512 | Service Manual - Page 77
25), almost all adjustments after parts replacement must be performed in the "factory mode." Service Mode adjustments are necessary if either the EEPROM (IC902) or the CRT is replaced. in the EEPROM mode, the "user-adjusted" data is reset to the factory preset values. Samsung Electronics 5-1 - Samsung CXD2512 | Service Manual - Page 78
Marked: IF 2. Adjust the VCO in the service mode; set IC200 Pin 44 (AFT) to 2.5V. 5-1-6 RF-AGC Adjustment 1. Input a PHILLIPS pattern (CH4). 2. Adjust the input signal so that it becomes more than 60dB Fig. 5-2 Sub-Tint Adjustment r fi 2.5V±0.1Vpp Fig. 5-3 White Balance Adjustment Samsung Electronics - Samsung CXD2512 | Service Manual - Page 79
top and bottom values are not equal, adjust so that the sum of the two 5-1-14 Horizontal Size Adjustment 1. Input a lion head pattern. 2. Enter the Factory mode. 3. Adjust HS so that both left and right of the loaded (Unload the tape and press DISPLAY, 6, 1, 4, POWER ON). Samsung Electronics 5-3 - Samsung CXD2512 | Service Manual - Page 80
TV) 5-2-1 General Alignment Instructions 1. Usually, a color TV TV. When inserting signal markers, do not allow the marker generator to distort the test results. 6. Connect the TV the TV is turned servicing. 2. Turn the power switch ON and adjust customer controls the TV and focus control (T444 TV the TV - Samsung CXD2512 | Service Manual - Page 81
Roughly adjust convergence. 5. Input a black and white signal. 6. Turn the low-light controls (Red and Blue) fully counterclockwise to obtain a green field. Adjust the Drive controls for a green field. LOCATION DEF. YOKE Fig.5-5 Tube Assembly ADHESIVE RUBBER WEDGES KIT Samsung Electronics 5-5 - Samsung CXD2512 | Service Manual - Page 82
powered on for at least 20 minutes. 2. Input a crosshatch pattern from a color bar generator. 3. Adjust the Brightness and Contrast controls for a well defined pattern. 4. Adjust the 4-Pole Magnets Movement Fig 5-7 Center Convergence Adjustment 6-Pole Magnets Movement 5-6 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 83
to obtain better convergence in circumference. r B G R -It /4- R I B B R t " -II. j R G B Incline the Yoke Up (or Down) I BGR --4--- Incline the Yoke Right (or Left) Fig 5-8 Circumference Convergence Adjustment Samsung Electronics 5-7 - Samsung CXD2512 | Service Manual - Page 84
6. Troubleshooting 6-1 No Power I No Raster, No Sound, Power Led Off) Check oth terminal voltages of C858 (130V). Yes heck both terminal voltages of C851 (140-150V . Yes V Check D801 F801,HC801. Is HCB01 Pin 9 6-8V? Yes Check/Replace T801. V Check PC801. Samsung Electronics V Check whether - Samsung CXD2512 | Service Manual - Page 85
47 0utpu the Selecte channe signal? Yes Does signal input to IC201 Pin 1? Check 0201,L203 R241,R242. Check Yes Does IC200 Pin 41 output signal? Yes Does signal input to IC200 Pins 43, 45? Yes Do IC200 Pins voltage (2.5V). Check C257. A No Does signal input to IC200 Pin 37? Yes V Check/Replace IC200. - Samsung CXD2512 | Service Manual - Page 86
Does signal input to IC200 Pins 53, 55,56? Check VCR. Check C619. Does 0601 work? Yes Check/Replace IC601. Check/Replace IC601. Does sign I input to IC601 Pin 2.4? Yes Does Voo input to IC601? Yes 0 es signal output through Yes IC601 Pin 7.12? Check 20V Line. Check/Replace Speaker. Samsung - Samsung CXD2512 | Service Manual - Page 87
6-4 No Vert Scan N Replace R421. Check R421. OK Check ICK11. Yes Check the waveform on the IC200 Pin 24. Yes Check vertical output drive circuit. Yes Check/Replace DY or FBT. Replace IC301. Check IC200. Replace it. 6-4 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 88
6-5 No Color Does signal input to IC200 Pin 45? Yes Check the oscillation on IC200 Pin 12. Yes Check IC200. ► Check 0202, IC200 Check C213, X201. Replace IC200, if necessary. Samsung Electronics 6-5 - Samsung CXD2512 | Service Manual - Page 89
IC901 Pin 28? OK Check OSD on the screen. Yes oes signa output through IC901 Pins 22,23, 24, 25? Yes Does ignal input o IC200 Pins 14,15, 6,17? Yes Check/Replace IC200. H Check/Replace RU02, CU02. Fade Out OSD. H Check/Replace IC901. )01 Check/Replace C209-211 and - Samsung CXD2512 | Service Manual - Page 90
6-7 Play Mode Inoperative nsert pre-recorded ape and press PLAY. Check XT601, XT602. Yes oes Deck mechanism erate in play mode? No See "6-8 Deck Mechanism Does Not Operate in Play Mode". Yes V See " 6-18 Video Missing in Play Mode'. Samsung Electronics 6-7 - Samsung CXD2512 | Service Manual - Page 91
High Cylinder Rotation? Yes SW 301{7; IC601 Fin 17. Yes Capstan Rotation Yes Take-up Reel Sensor; Pulse Program SW; IC60 Pins 47,48,74,75. Yes Replace IC601. DC Stop Mode IC601 nn 23; High Rotate". Check 0602 and Take-up Reel Sensor (PT601). Check Cylinder Loading Motor. Samsung Electronics - Samsung CXD2512 | Service Manual - Page 92
. Yes Load VCR with blank tape and press Record button. Yes Record indicator (LED) on. Yes IC601 Fin 49(D-Record voltage : High. Yes See "6-19 Video Missing in the Record Mode". Does the tape unload? Yes Check tape. See 6-7 "Play Mode Inoperative". Check IC601 Pin 48 (PROG A) Logic. Check IC601 - Samsung CXD2512 | Service Manual - Page 93
. Yes V Check Deck. Check IC601 Pins 58, 59 Servo data, CLK). No Check PC5V motor B+ line and Capstan motor. Replace IC601. Check IC601, IC201. 6-10 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 94
Check PC5V motor Fl* line and Capstan motor. See "F-FWD Mode Inoperative". el See "6-8 Deck Mechanism Does Not Operate in Play Mode". Check IC201, IC601. Samsung Electronics 6-11 - Samsung CXD2512 | Service Manual - Page 95
20 Low (HSR See "6-7 Play Mode Inoperative". Check IC601, IC201. A Noise Bar Locked on Screen? Yes Check IC201 Pin 59 Ok waveform (MK-MM heck Control Pulse IC6M Pin 62. Ok V Check IC2Oland Capstan motor. Adjust A/C Head height. 6-12 - Samsung CXD2512 | Service Manual - Page 96
High (CAPE/R). Low Check IC601 An 20 Low (HSR CTL). Check IC601 and IC201. Yes Check IC201 Fin 59 (111K MM). Check IC601 Pin62 Ng control pulse. Ok Check IC201 and Capstan motor. Adjust A/C /Head height. Samsung Electronics 6-13 - Samsung CXD2512 | Service Manual - Page 97
: Yes IsIC602Fin 713V? Yes 0602 PIn 10: High IC602 Pin 2: Low. Yes Check Tape loading motor. Replace IC601. Check loading motor B+ line. Replace IC602. 6-14 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 98
Pin 6: 0.4 and above. Yes Check Capstan motor. Check 14V line. Check PC5V line. eck IC201 Pins 49. (Servo data, GIG). Replace IC201. Check Capstan motor control and R232 (16K), R218 (68KO, R221 (1.3K). Samsung Electronics 6-15 - Samsung CXD2512 | Service Manual - Page 99
. Yes CN201 Fin 6: 0.4 and above. Yes Check Cylinder Motet. Chech b+ 14V line. Check PC5V line. heck IC201 Fins 12,3,5,6,7,9,11,12:2.5V and less Check Video Board Oscillation (3.58MHz) Check Cylinder motor. Check Cylinder IC201. 6-16 - Samsung CXD2512 | Service Manual - Page 100
Pin 2. Yes Video Signal on IC301 Pin 28. Yes Video Signal on Q312 Collector. Yes Check video output. Input 1Vp-p Video signal and press Input button. Check 1Vp-p Video input. Check IC301 Pin 4 Voltage PB mode : High. Yes w Check IC601 Pin 50. Check Q801. Replace IC302. Samsung Electronics 6-17 - Samsung CXD2512 | Service Manual - Page 101
Check Video signal output from 0301 emitter. IC301 Pin 4: High. Yes Replace IC301. Check IC302 Pin 4: Low. Yes Replace IC302. Check IC601 Pin 50 (D-PB) :Low. Yes Check Q317 operation. Check Video signal output from 0301 emitter. Check IC601 Pin 28 (D-REC). Check Q801. 6-18 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 102
VCR with tape and set up in record mode. Video signal on IC301 Pin 31. Yes FM-Video signal on IC301 Pin 34. Yes HNo Check Input/Output circuit. Check IC301 Pin 34: PB (High) mode. Yes Check 0317. FM-Video Signal on IC302 Pin 8. Yes M-Video signal on IC302 Pin 14 (Standard) nd Pin - Samsung CXD2512 | Service Manual - Page 103
signal AIM Rn 9. Yes IC301 Fin 18 OSC: .5795 MHz ±30liz. Yes Replace IC301. No Check IC301, 0305 Q306 on CCD circuit. Replace XT301. 6-20 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 104
6-21 Color Missing in Record Mode Color Signal No on IC301 Pin 14. Yes Color Signal on IC302 Pin 7. Yes Replace IC302. 1 Fin 180SC: .5795MHz ±30liz. Yes Replace IC301. Check C352. Replace XT301. Samsung Electronics 6-21 - Samsung CXD2512 | Service Manual - Page 105
Video mode and input audio signal to audio input jac (CN01j. Audio signal input to IC501 Pin 10. Yes Check CN01. udio signa Output on IC501 Pin 13. Yes Audio signal output on CN01. Yes Check R517, R518. *Replace Audio jack. IC501 Pin 9: AL 9V. Yes Replace IC501. Check 9V line. 642 Samsung - Samsung CXD2512 | Service Manual - Page 106
on No IC502 Fin a Yes Audio nput to IC501 En 9. Yes Audio output on IC501 Pin 13. Yes Check C507, C511, C512, C513, R511, L504. Samsung Electronics Check AL9V Line. Check IC601 Pin 29. Check C501, C502, C503, R502, R503, R504, AC head Check C504. Replace IC501. 6-23 - Samsung CXD2512 | Service Manual - Page 107
the parts of Bias peripheral circuit. Replace Bias Coil FL501 Check C508, C509, C528, R509,R512,R513,R508. Replace IC501. Replace R512, C515, C520,R519. Samsung Electronics - Samsung CXD2512 | Service Manual - Page 108
7. Exploded View and Parts List 7-1.TV Mechanical Parts ; CXD2512, CXD2514 0 21 16 17 18 O 19 13 8 10 3 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 109
,FRCNT CABINET -FRCNT ASSY-PAB,A/V SCREW- WASHER,SPEC SPEAKER-GENERAL SCREW-TAP,RH(SPK+IF) KNOB- FAMLY(B) KNOB- FAMLY(A) WINDON-RMC INDICATOR-LED ASSY -PNES,CONTROL SCREW-TAP,RH(ACP4CF) CLAMPER-D,COIL SCREW-CAT(CRT+CF) CRT-COLOR CRT-COLOR CRT-COLOR COIL-DEGAUSING ASSY-PNB,CRT SCREW-TAP,TH(C8 - Samsung CXD2512 | Service Manual - Page 110
7-2 Mechanical Parts (1); Top View and Parts List 1220 -I 1221 7300 T237 7216 _J 6 I--I I I I -- - 1 ' 1I I I I 7212 OPTIONAL 1222 1218-%. 7201 ". 1203 952 7209 1207 T218 901 20 901 1219 11--900 1217 1304 .956 .1210 0 tit • o- 956 1236 a • O 956 G • 7211 7223 904 i -7303 I - Samsung CXD2512 | Service Manual - Page 111
-00 63383-0031-00 62724-0239-00 61533-0108-00 69020-124-027 69020-124-029 66823- 0061-00 67084-0076-00 62201-0097-00 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 112
7-3 Mechanical Parts (2); Bottom View 902 F- 6264 922 18260 8267 6266 8265 951 te2 956 6255 951 6261 8258 952 8263 8259 -956 B257 8256 B254 8268 0 5 oa to' B251 97 6262 918 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 113
-956 B253) 902 918 922 951 952 956 8251 8252 B253 B254 8255 8256 8257 8258 8259 6260 8261 8262 8263 B264 8265 8266 8267 8268 AC60-10051A AC60-10006A AC60-30025A AC60-30018A AC60-30007A AC66-80001A AC66-20019A AC66-20069A AC61-60115A AC66-20004A AC66-20066A AC66-20016A AC66-30011A AC66-30012A AC61- - Samsung CXD2512 | Service Manual - Page 114
7-4 Housing Assembly S-914 r 902 1 H 510 r-902 H 6 11 H523 U N H 521 H 520 H533 H 532 H 531 K N, N, 6 I H 535 N H 522' 69\N H 526 H 524 H 530 N I \® H 545 H 54C- H 544 H 550 H541 L, N, N, H 542 H 500 H 543 7-4 - Samsung CXD2512 | Service Manual - Page 115
-0100-00 62203-0104-00 62201-0101-00 61642-0032-00 62724-0218-00 61533-0099-00 62724-0222-00 61403-0073-00 -914 -914 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 116
8. Electric Parts List 8-1 .CXD2512 Main t 0c No. e No. PCB AVO0 0101 0102 0104 C109 C-ELECTROLYTIC C-ELECTROLYTIC C-FILM C-FILM C-FILM C-ELECTROLYTIC C-FILM C-CERAMIC,HK C-FILM C-ELECTROLYTIC Samsung Electronics Specification." TVN6350 KH25 TVN6350 KH25 330X245 11.6 P13.5 V-A1V IN 2P ST VICE - Samsung CXD2512 | Service Manual - Page 117
471-IN W CE04W TAPG 35V 470M-M CE 04 C 25V T 471-M W SG CE04W TAPG 200V 100M-M(16 CE 04 -40185 25V T 102-M CE04W TAPG 16V 1000U-M Samsung Electronics - Samsung CXD2512 | Service Manual - Page 118
MTZ 9.16 TZP33A 31.0/35.OV 10MA T TVR10G(TAPG) MTZ 9.18 TZP33A 31.0/35.0V 10MA T 1N4003 200V IA T TVA10G(TAPG) 1R5GU41(TAPG) TVR10G(TAPG) Samsung Electronics 8-3 - Samsung CXD2512 | Service Manual - Page 119
AL0276680J 040 22UH K AL02 220K AL03 680-K 45.75MHZ 0.37UH 7MG VIF S 3.5X6X1.0 AL03 100-K 3.5X6X1.0 AL04 100-K 3.5X6X1 .0 E01-E73 EL01-EL18 GT21-0T91 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 120
2K-JIERD-S2TJ 202 RD 118T 360-J RD 1I8T 10K-JIERD-S2TJ 10 RD 118T 470K-J RD 118T 470-J RD 1I8T 91K-J RD 118T 470K-J Samsung Electronics 8-5 - Samsung CXD2512 | Service Manual - Page 121
1I8T 5.6K-JIERD-S2TJ 5 RD 112T 2.2-J RD 1181- 330K-J RD 112T 2.2-J RC 112T 4.7M-KIERC-12GK 4 RD 182T 3.9K-J RS 2P 15K-J RS 2P 15K-J Samsung Electronics - Samsung CXD2512 | Service Manual - Page 122
-103 34729-100-002 31018-177-471 31018-177-182 31018-177-243 31018-377-823 Samsung Electronics R-CARBON R-CARB0IN/METAL FILM R-METAL,PLATE A-CEMENT R-CARBON/METAL FILM R-CARACN/METAL FILM RD 118T 10K-J1ERD-S2TJ 10 HR-CR7 DC12V TV-5 RD 118T 470-J RD 118T 1.8K-J RD 118T 24K-J RD 1121 82K-J 'CZ 8-7 - Samsung CXD2512 | Service Manual - Page 123
-3050C SI-9050C CKD S.N.A ASSY-TRANSMITTER ASSY-TRANSMITTER T4446 PM614V 35 SS 2HD BLK ASSY-MODULE,DECK ASSY-MODULE,DECK SV-M31SAN TVN6350 ASSY-SPEAKER Samsung Electronics - Samsung CXD2512 | Service Manual - Page 124
ASSY-ACCESSORY TRANS-MATCHING GUIDE-QUICK REFERENCE INSTRUCTION-BOOK CARD-PRODUCT REGISTRATION Y4 VIDEO *3Y33-00022-010 PCB 36029-0324-000 C701 A1104-0496 C702 31507-127-006 CN701A 36434-0127-000 D701 32309-110-001 Samsung Electronics ASSY-PWB,CONTROL ASSY-PWB,CONTROL P.C.8-CONTROL - Samsung CXD2512 | Service Manual - Page 125
0056-000 34073-0071-000 34082-02720000 34082-02730000 LED LED DIODE DIODE-ZENER DIOOE-ZENER DI OOE-ZENER GUIDE-LEO TR-W/RESISTOR TR-W/RESISTOR TR-W/RESISTOR R-CARBON/METAL FILM R-CARBON/METAL FILM R-CARBON/METAL FILM R- TVN6350 ABS HB BLK PA-100 TVN6350 ABS HB BLK PA-100 TVN6350 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 126
FE FZB 2S-4X12 FE FZB 2S-3X10 FE FZY 2S-3X10 FE FZY 2S-3X10 FE FZY 8-2.CXD2512 and CXD2514 Dissimillar Parts •3F14-00046-050 IS:6441001 ASSY-TRANSMITTER ASSY-TRANSMITTER saagithilE TM48 PM614V 38 SS •3Y34-00004-010 ASSY-MODULE,DECK ASSY-MDOULE,DECH CXD2514 KH25 4HD Samsung Electronics 8-11 - Samsung CXD2512 | Service Manual - Page 127
-917-102 61048-177-222 61048- 325-221 62169-403-821 A1104-0611 A1100-0017 A1100-0017 A1100-0017 A1100-0040 A1104-0610 A1104-0611 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 128
2007-000941 2007-001113 2007-000282 2007-000338 2001-10-01 2007-000241 2007-000221 2007-001635 2007-000941 2001-000290 2001-000290 2007-001009 Samsung Electronics C-AL;4.7UF,20%,35V,GP,4X5,2.941,TP C-CERAMIC,CHIP;1NF,10%,50V,X7R,2012,-,TP C-CERAMIC,CHIP;10ONF,+80-20%,50V,Z5U,2012 - Samsung CXD2512 | Service Manual - Page 129
,30%,1110W,TOP DIODE-ZENER;MT26.88,6.8V,6.49-6.83V,500MW, DIODE-ZENER;MTZ6.88,6.8V,6.49-6.83V,500MW, VIDEO PARTS C-CFRAMIC,CHIP;180PF,5%,50V,NP0,2012,-,TP C-CERAMIC,CHIP;100PF,5%,50V,PD,2012,-,TP C-CERAMIC,CRIP;5PF,0.5PF A1100-0011 A1100-0017 61637-205-470 61637-505-101 A1100-0011 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 130
-833-101 62137-103-380 62137-103-380 62137-302-740 62137-302-740 Samsung Electronics C-CERAMIC,CHIP;1NF,10%,50V,X7R,2012,-,TP C-CERAMIC,CHIP;10NF,10 DIODE-SWITCHIN3;1N4148,100V,20CMA,500MW,4NS,D0 IC-LINEAR:LA7425 DIP BULK VIDEO-PROCESS IC-LINEAR;LA7411 DIP PRE-AMP IC-LINEAR;LC7975J DIP CCD INDUCTOR - Samsung CXD2512 | Service Manual - Page 131
-391 61079-917-911 61079-917-821 61079-917-391 61079-917-302 61079-917-272 61079-917-122 61048-177-222 61079-917-474 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 132
-000671 2007-000221 2007-000518 2007-000241 2007-000671 2001-000522 2007-000653 2001-000780 2007-000493 2007-000774 2007-000881 2007-000872 Samsung Electronics *,? 11114L 4. SHIELD-CASE PIAMP;3516ET, -,SV-50,SHIELD;SPTE,T0.3,-,SV-50,- -SEMI ;1KOHM,30%,1110N,TCP CRYSTAL;3.579545 HC149U/8PF1 TAPG - Samsung CXD2512 | Service Manual - Page 133
300OHM,5%, 1W,AD,TP,4.3X124A R-GHIP;180044,5%,1110W,04,TP,2012 R-METAL OXIDE;300041,5%,1W,AD,TP,4.3X12191 SYSTEM CONTROL PARTS C-CERAMIC.AXIAL;IP050F 104Z C-CERAMIC,CHIP;10ONF0.80- 20%,50V,Z5U,2012,- ,T C-CERAMIC,CHIP;10NF,10%,50V 917-203 61048-177-102 61048-177-203 61048-177-203 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 134
-000429 2001-000273 2001-000429 2001-000273 2001-000429 2001-000429 2007-000546 2001-09-01 2007-000468 2001-000429 2001-000429 2001-09-01 Samsung Electronics aiign R-CAR801:15041,5%,118W,AA,TP,1.8X3.210A R-CARBON;1KOHM,5%,1160I,AA,TP,1.8X3.2161 R-CARBCN;1MCH4,5%,118W,AA,TP,1.8X3.21/A R-CARECN - Samsung CXD2512 | Service Manual - Page 135
61048-177-102 61048-177-103 04064-0007 63322-0356-00 84064-0007 63322-0356-00 66203-0020-00 81283-0036 64539-021-009 8-20 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 136
2004-000570 0403-000295 0201 A1104-0611 C202 2203-000199 C203 2203-000199 C204 2203-000199 C205 2203-001680 C206 2401-000591 C207 A1104-0611 Samsung Electronics ASSY-DECK ASSY-DECK;DX5-R,- ASSY-MAIN ASSY-MAIN;SV-871,1012F DECK P.C.B-MAIN;1V0 SV-M30 T1.6 W290 L250 POWER PARTS C-AL;330UF - Samsung CXD2512 | Service Manual - Page 137
-917-684 61079-917-104 61079-917-124 61048-177-683 61079-917-152 61079-917-122 A1020-0340 61079-917-473 61048-177-103 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 138
-000967 2203-000260 2203-000260 2203-000363 2401-001917 2203-001684 Samsung Electronics 41410510W0i:_ R-CARBCA1:10KCHM,5%,118W,AA,TP,1.8X3.21A1 R-CNIP .88,6.8V,6.49-6.83V,500MW, DIODE-ZENER;MTZ6.88,6.8V,6.49-6.83V,500MW, VIDEO PARTS C-CERAMIC,CHIP;180PF,55,50V,NP0,2012,- ,TP C-CERAMIC,CHIP:100PF - Samsung CXD2512 | Service Manual - Page 139
1N4148,100V,20CMA,500MW,4NS,D0 DICOE-SNITCNING;1N4148,100V,20CMA,500MW,4NS,D0 IC-LINEAR;LA7425 DIP BULK VIDEO-PROCESS IC-LINEAR;LA7416 DIP BULK IC-LINEAR;LC7975J DIP CCD INDUCTOR-AXIAL;22UH,5%,2.4X3.4NM COIL PEAKIKG. 64012-0456 64012-0452 B4012-0299 62427-020-220 62427-020-180 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 140
2007-001631 2007-000586 2007-000686 2007-000822 2007-000308 2007-000029 2007-001601 2004-000856 2001-000969 2001-000429 2007- 001208 Samsung Electronics INDUCTOR-AXIAL;39UH,5%,2.4X3.414 COIL-PEAKING AXIAL;BALO4ST 101K COIL PEAKING.AXIAL;LALO2TB 680J TAPS INDUCTOR-AXIAL;12UH,5%,2.4X3.4LIA INDUCTOR - Samsung CXD2512 | Service Manual - Page 141
-153 62137-702-020 62137-701-012 61048-177-121 61079-917-334 61079-917-472 61079-917-912 61079-917-103 61048-177-393 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 142
66639-0003-00 66639-0003-00 84150-0286 63323-0313-00 84161-0036 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 143
-177-102 61079-917-511 61079-917-224 61079-917-224 61079-917-224 61048-177-511 61079-917-683 A1004-0357 61048-177-102 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 144
X-5 MODULE TR-FH)TO;PT495F 35V 20MA 501/14 860NMAIV 200EG liOLDER-TR;PCIA MK X-5 MODULE SWITCH-PROGRAM;MXS00280MLBO RESONATOR-CERAMIC;8MHZ EFOEC8004T4 3ICN J TAPG CRYSTAL;32.768KHZ A1020-0315 61079-917-122 61048-177-472 -0356-00 66203-0020-00 B1283-0038 64539-021-009 Samsung Electronics 8-29 - Samsung CXD2512 | Service Manual - Page 145
4 VIDEO S/W IC l(A8402 HC801 EXT VIDEO IN SPEAKER R.D.B /// CRT DRIVE 0401 H-OUT TR 2501880 VERTICAL T444 F B T FCR25A006R STR-S6709 SWITCHING TRANS 6V I2.5V 20V► IM03 Mold.Regulaux TDA/3139 STAND BY ►9V I I AC INPUT LTVB 17 B PC 01 Fig. 9-1 KH-25 Chassis Block Diagram Samsung - Samsung CXD2512 | Service Manual - Page 146
10. PCB Layout Diagram 10-1 Video Main COORDINATES - A - F - C - C - C - C - B B - C A - B LOCATIOPI 0605 0606 0607 00301 )(1601 01602 5601 5602 0T601 PT602 L0601 811601 50600 commits - F - B - B - E 2 - 0 2 - E 3 - E I -D 4 -B 4 -E - F - 0u O a 'AP% PIM HI IN ;DP I a Samsung Electronics - Samsung CXD2512 | Service Manual - Page 147
I. P 1.2 -1 1- son .43 Mr. -Y- --.-J Cirr-C7aT I VIDEO IF SERVO V-1 NTSC MAIN PCB' 66029-1037-D0 OSV 0 1 DIP DECK IC20.1 an. OPEC FWD VRUP I CD CO -• mw rao,. mA Flo Tr 918 CT. CO - Samsung CXD2512 | Service Manual - Page 148
10-2 TV Main A 1 5V 4A a0 E102 CUB Bbal 001 FCBOI 418 401 YO LB 0 Yl C • EYOB Lelli • E 4108 0185 5 1•100 07 YI E113 YO9 Ell a Ell •5 • - Samsung CXD2512 | Service Manual - Page 149
213 179 226 112 229 173 203 115 133 202 216 61 128 70 144 125 110 55 29 132 107 21 41 203 118 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 150
10-3 Control , v 2 s...d.rmr, • 10-4 CRT . • mwal I f,,,4)11 ■ fm.e: MC, IMP 0 8512 BN NC A EY D RN 5C GN CI NC Samsung Electronics 91,167 tolo3 - Samsung CXD2512 | Service Manual - Page 151
SW704 PWB CONTIOL. TVN-1351 V0L/UP 5V708 5V709 CH/D0V 5M706 CH/UP 5V707 10-5 AN • 3u60n19-03z 0001 -412: al 4 11= 21601A 046034 10-3 - Samsung CXD2512 | Service Manual - Page 152
Diagram CHASSIS : 141-1-25 CONTROL PCB 13P CN701 AC IN CRT PCB CN50 CRT MAIN PCB 4F CN602I Sim POWER TRANS CN6031 2 8P CN903 FBT ANODE CN501A CN400 MICOM CN902 SCREEN FOCUS IF/CHROMA CN601 S.P.K MODULE DECK CNO4 CNO2 CNO1 AN PCB CN603A CN601A 7P 6P Samsung Electronics 11-1 - Samsung CXD2512 | Service Manual - Page 153
TOTAL WIRING DIAGRAM DAM MAIN ASS'Y 2 HEAD MODEL 4 HEAD MODEL No TOW FIAL ERASE HEAD ASSY AU010/tONTROL HEAD ASSY CONTROL HEAD AUDIO ERASE HEAD IlfO.O NEM LOOM LOUP aWE P Dn MEAD NOEL OF.A0 OP MI TO TV ONI V.001 ON DO CO WTL DO TO TV CNO2 34 PM I 5 555-0.0r TS-10 MET 2 0/5. 1U2 RIC on - Samsung CXD2512 | Service Manual - Page 154
SYS-CLK a r 9 RESET 29 o AL 5. 8Vio 11 RMC OUT 11 o m/T GND 12 TO /FROM TV CNO1 Hi- Fi OPTION K io A OUT Rio C 9 A IN R 9 8 GND 8 7 A OUT L 7 6 GND 6 5 A IN L 5 4 GND 4 3 V IN 3 2 GND 2 i V OUT i Samsung Electronics 001 1144002 001 A928 001 100K Cu CO2 47/25 'S IC01 ID 002 - Samsung CXD2512 | Service Manual - Page 155
Pse SYS- IN PS10 RESET 1 PS11 RESET 2 PS3 RMC OUT TO SERVO ► SP1 PC 5V SP? CM 8+ DM 8+ S 4 MOTOR GND I TO Y/C ► PY1 PC 5V 0 PY2 VIDEO IN py. VIDEO OUT ► PY4 AL 13V 12-1 - Samsung CXD2512 | Service Manual - Page 156
■ 12-1-2 SYSTEM CONTROL S.301 0O1 5 SI1 A F04I 12 i r 10C 2543 12 ION I Ipew 223 ci priP 9601 PUNY STMIT SOON NO2 • PTO" ENO 90801 $ 0645 510 0 NI NO - Samsung CXD2512 | Service Manual - Page 157
asp @gi TO SERVO 0613 T a1 N1 Ca Ith Y.ON IRV NI iWIXX 0 0 TO VIDEO IOU a a a 0106 AO" len MT 4444 i0f10116 a a MO MITE 0 0 TO LOW 184002IP all 00/16 ; 11114 r a o all I OPTION 4 Fr 0 HI PI JOG/SHUT ah4 TO TV(F/T) a ILL VII \-.lel \ \ \ /Nail \ -• 1721 I5 \ -MI it \ LI wl \-t2 .1 - Samsung CXD2512 | Service Manual - Page 158
12-1-3 SERVO RED CYLINDER PHASE CONTROL CYLINDER SPEED CONTROL BLU FPOWTO Y/C FSC V-LOCK ROTARY SW SP - H )1' D SWIVI D AMP SW ENV DET LP - H SLP - 'H C-SYNC FROWTO HI-FI Tlar "4 . 4 2.3 5 X'2.5 0212 Wi3 0206 MOK C201 10/16 on 4111 62011 4.1/35 0203 ILA 1. 206 0204 104 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 159
CAPSTAN PHASE CONTROL CAPSTAN SPEED CONTROL 02291 109 VV 0203 K901004 AN I-4- C2221 s 104 L MAI-4 CM 2214 IMI ETD 0_42AlA l rt AOr_ 0202 iCiy_ vor_H i DIM III Ca I C223 A. SK 104 - Samsung CXD2512 | Service Manual - Page 160
'D) FP FM' FRO FRO CNI30 1 OP C RI Ms To CYLINDER olOY RED RECORD VIDEO PROCESS MIME 10 If SO ONO .01 FM EO FOR SOPS LSI UN nul l 2140 OPTION NA MOM L e N.IN TPles BLU 7 PB V OPTION N ON ON - Samsung CXD2512 | Service Manual - Page 161
IOEO PROCESS Samsung Electronics lit all Cl 3 3 N 3 3 3 3 3 3 3 A 0 3 3 3 0 0 0 3 0 3 a 14 R A A IR X a a 5 Ila-li A a a~~j>j> lid 5. 'SFr gl E in: ink Y onm ison.t - IF--I U i Ri .. A 5, LA ii$ i SW a i= ig 4--NI'Ar.lg rli - I A ; - Samsung CXD2512 | Service Manual - Page 162
VIDEO PROCESS CN3O SP w. Mt 040 TO Mil MY O AS .4 11.01 01 IS 001 4a 00. a. 1 El FOR 90PB ISO Lit O14 210 OPTION SO VO MO MO ;1 °V NM 01 L IPS AL, n3iDa a Psi aaac•rla_ ..c'e 1 D 3 D3 0 EmIyS Tr OX' iu Poo_ r VW NH OAS as W. ; 104 iT 1 a OS COO p Samsung - Samsung CXD2512 | Service Manual - Page 163
00 MEI 111114 1V01 IOU 12 91 -4 0.0 _4 inn 008 IND O ♦lll 10 1.CCIAP M.X11€0 1001 2 3 REC PLAY 3.0 3.0 2.9 4.2 4.2 AL l3V 73 VIDEO DIff VIDEO IN PC 55 111011/T6 POW 7 4.4 4.4 I 2.11 20 le a 11 2.4 13 2.4 2L 2.4 14 10 15 22 22 2.2 2.0 2.0 2.0 17 3.7 3.7 3.7 111 2.5 - Samsung CXD2512 | Service Manual - Page 164
1. 12-1-6 AUDIO RECORD PB CN50 CTL (-) 6 CTL (4-) 5 GNO 4 AUDIO ERASE 3 PB 2 REC 1 FROW TO A/C HEAD I REC HM PB I-H TO HI-FI C502 FULL ERASE 1 ONO 2 TO F/t HEAD 46161 27K P524 300 1W FL501 6 5 2 4 3 P526 300 111 8523 47 22 4.7K 0501 C100 0520 1e R521 4.7 C524 0.047 - Samsung CXD2512 | Service Manual - Page 165
A3 AUDIO OUT A2 AUDIO IN OP CM FRCWTO MIER LO-C2AIM.: 3201 a a 0 0 2.4 4.6 a a a * a 4.6 a IS 0 4.9 4.4 zr as 22 fr 23 24 6.3 1.2 06 0502 0603 SO 0024 $ 4 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 166
12907 11.260217 100 061 1401 .46 0103 SOO 100 22 OD 22 Cj> H 400 ID MO WWI &NI. Pot 0 NB e ■ 2 1:904 104 mvn, 0505 C 200330.1162 6100 6612 fss! C908 1121 20 ■ C 170 102 0121 160 rol :age EX .3 11 6067 POR fff 61101 1ECC1 0- 0OO 0 O 0 WICK* •11. 160 CI C15 OuF 10 00101 01 .1 1 - Samsung CXD2512 | Service Manual - Page 167
1 0600 84444B 0 94. 0525 tOuf 7,4 unl 100u 10 0516 7;7 5oviN, 520 680- 6 111.031 74 Cl LE 20 C242 • 30 47.44 = 164 = 011, 7 61111.1 11201 44 41 SO 402 9171 4a AFL 48 14 I[ 14502 41- 4414,4- 504 so D20 Yz 00 8440 11802 aor 3W 2 La 6.52 gr. 700 WA- 10003 70501 nen (SIP - Samsung CXD2512 | Service Manual - Page 168
sh xI 3. 21 uo , UC 2 ow ~bmw' AEA FOE AMP 81 PCB:36029- 0324- 000 C100 I In mc i i ©I I I@I(DICOPDT 0704 NAM 701 Fla 0701 M2 070 0001 0070I 10402-050 0102 9501001 WM annn Wn 0210001 NM VW MCI WIMM 2-0 APT am M CA-1 Wm y PI . a= um 01.fl „Zi p „mu FOAO Ma KM 00001 ax 04601 214- - Samsung CXD2512 | Service Manual - Page 169
HC801 #1 HC801 #3 HC801 #8 4 HC101 #6 1O200 #47 111 6 It 1O201 #3 IC200 tk30 8 IC200 #41 9 ix 1O200 #45 10 1O200 #43 IC200 #21 IB IC200 #20 w IC200 #19 IC901 #22 fl "r' 41.1." IC901 436 I I 16 IC901 tt24 - Samsung CXD2512 | Service Manual - Page 170
19 IC901 #28 20 IC901 MiCOM #31 IC901 #41 15 IC901 # POWER LINE SIGNAL LINE IC901 #: IC901#42 C IC200 #54 24 Diode D603 eaker 26 IC200 #32 1-1 Q402 Bas _2 Ebb - Samsung CXD2512 | Service Manual - Page 171
0.0 0.0 F/B 0.0 0.3 INH 0.8 1.0 B+ 7.7 7.7 IC802 PIN NO. 1 2 3 4 5 VOLTAGES 0.0 2.6 5.9 5.0 8.6 PC801 PIN NO. 1 2 3 4 STAND-BY 116.9 116.9 0.0 7.0 POWER 109.1 108.5 0.3 7.5 IC803 PIN NO. 1 2 3 4 5 6 7 8 9 VOLTAGES (V) 11.4 12.8 2.9 1.7 0.0 4.0 2.4 9.1 5.0 Samsung Electronics 12-9 - Samsung CXD2512 | Service Manual - Page 172
SCL GND VDD VOLTAGE (V) 0.0 0.0 0.0 0.0 4.8 4.8 0 4.9 IC601 PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 PIN NAME IN2 PRE GND IN1 RIPPLE OUT1 POP VCC PWGND MUTE OUT2 VOLTAGES (V) 1.6 0 0 0 0 6.3 8.7 5.0 18.8 0 4.2 8.5 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 173
18 19 20 21 PIN NAME GND GND GND GND GND GND GND GND AFT HOLD GND LINE TUNER A.MUTE VCR.PWR TV. PWR SCL SYS.OUT SPOT VOLTAGES (V) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.3 4.7 0.0 0.0 4.9 0.0 0.0 0.0 0.8 0.0 1.7 1.8 0.0 1.9 2.3 4.0 4.9 4.9 5.0 0.0 4.9 0.9 3.9 4.8 4.8 Samsung Electronics 12-11 - Samsung CXD2512 | Service Manual - Page 174
ACL EXT VIDEO BLACK DET AV/SW OUT REST Y-IN AFT CHROMA IN VCC TV OUT SIF VCC PIF TANK PIF TANK GND LIMITER IN AUDIO IN DEEM PHASIS EXT. AUDIO EXT AUDIO VOLTAGES (V) 0.0 1.2 0.0 1.3 7.5 6.1 0.0 2.9 3.2 3.5 1.5 5.2 3.1 4.6 4.7 4.4 2.1 9.0 3.9 9.0 7.9 7.9 0.0 0.0 2.8 4.5 2.8 2.8 Samsung Electronics - Samsung CXD2512 | Service Manual - Page 175
0.0 0.0 19.7 0.0 0.0 0.6 N LOC. NAME TERMINAL \ 0807 QX01 0401 0601 E 0.0 6.5 0.0 0.0 C 0.0 0.0 9.9 0.0 B 0.6 6.1 0.4 4.8 N LOC. NAME 0201 0202 0203 0204 TERMINAL \ E 1.2 1.1 3.3 0.0 C 9.0 9.0 9.0 4.2 B 1.8 1.7 3.9 0.0 Samsung Electronics 12-13
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 |
Television
Video
Cassette
Recorder
I
CHASSIS:
KH-25
MODEL
:
CXD2512/AUCX,
CXD2514/AUCX
CXD2512/ACCX,
CXD2514/ACCX
SERVICE
Manual
Television
Video
Cassette
Recorder
CONTENTS
1.
Precautions
2.
Specifications
3.
Disassembly
and
Reassembly
4.
Alignments
and
Adjustments
(Mechanical)
5.
Alignments
and
Adjustments
(Electrical)
6.
Troubleshooting
7.
Exploded
Views
and
Parts
List
8.
Electric
Parts
List
9.
Block
Diagrams
10.
PCB
Layout
11.
Wiring
Diagrams
12.
Schematic
Diagrams