THOMSON Brandt FERGUSON SERVICE MANUAL DOCUMENTATION TECHNIQUE TECHNISCHE DOKUMENTATION DOCUMENTAZIONE TECNICA DOCUMENTACION TECNICA M U LT I MEDIA THOMSON X1000 (DECK MECHANISM) WARNING : Before servicing this chassis please read the safety recommendations. ATTENTION : Avant toute intervention sur ce châssis, lire les recommandations de sécurité. ACHTUNG : Vor jedem Eingriff auf iesem Chassis, die Sicherheitsvorschriffen lesen.
CONTENTS 1. Description Of The Mechanism........................................................................................2 2. Assembly Diagram & Major Parts Check .........................................................................5 3. Disassembly & Replacement...........................................................................................12 4. Mechanical Adjustmen ....................................................................................................18 5.
1. DESCRIPTION OF THE MECHANISM 1-1 Characteristic Of the T-Mecha Deck Mechanism 1) T-Mecha Deck follows the VHS standard. 2) T-Mecha Deck uses three motors(Drum motor, Capstan motor and L/C motor) 3) T-Mecha Deck uses L/C motor to drive Front Loading. 4) T-Mecha Deck recognizes each mode by using a 4-Bit Mode signal. This 4-Bit Mode signal is generated by the Cam Switch which is driven by the L/C Motor. 5) T-Mecha Deck is operated by 6 Modes(Eject/Initial/Review/Idle/Play, Stop,Slow/Brake/FF&Rewind).
1-3 Wire Diagram & Connector pin Arrangement 3
2. ASSEMBLY DIAGRAM & MAJOR PARTS CHECK 2-1. ASSEMBLING DIAGRAM 2-1-1) DECK ASSEMBLY DIAGRAM A. UPPER VIEW 1. MAINBASE ASS'Y 2. DRUM ASS'Y 3. FE HEAD 4. S SLANT POLE ASS'Y 5. THENSION BAND ASS'Y 6. S BRAKE ASS'Y 7. S REEL TABLE 8. REEL BRKT TOTAL ASS'Y 9. IDLER PLATE TOTAL ASS'Y 10. T BRAKE ASS'Y 11.
B. BOTTOM VIEW 20. L LOADING ASS'Y 21. R LOADING ASS'Y 22. CONNECT PLATE 23. REEL BELT 24.
2-1-2) FRONT LOADING assemble diagram 6. DOOR OPENER 7. SAFETY LEVER R 8. FL BRKT R 1. FL BRKTL 2. TOP PLATE 3. SAFETY LEVER 4. LOADING LEVER AS4 5.
2-2. PERIODIC MAINTENANCE AND SERVICE SCHEDULE 2-2-1) Periodic maintenance and Service Schedule A. In order to effectively maintain the excellent performance and fully utilize the features of this apparatus. and to lengthen the life of mechanism and tapes, we strongly urge”you to perform the periodic maintenance and inspection as described below. ¡ Following should be done after the substitution of parts of deck or correction of deck failure. B.
2-2-3) SERVICE SCHEDULE FOR EACH PARTS Following parts should be checked according to the recommanded intervals. PERIODIC SERVICE (TIME) NAME 1000 2000 3000 4000 5000 DRUM TOTAL ASS'Y CAPSTAN MOTOR L/C BRKT TOTAL ASS'Y REEL BELT IDLER PLATE TOTAL ASS'Y REEL TABLE T BRAKE ASS'Y TENSION BAND ASS'Y PINCH LEVER TOTAL ASS'Y AC HEAD ASS'Y FE HEAD REEL GEAR TOTAL ASS'Y : Check and Replace if necessary.
2-3. JIGS AND TOOLS 2-3-1) LIST OF JIGS AND TOOLS NO ITEMS MODEL FIG.
2-3-2) SKETCH OF JIGS AND TOOLS CLE ANI NG TAP E TAP E 30 10 8-2 0 30 10 8-1 VHS SPINDLE HEIGHT GAUGE 0 10 10 30 20 20 20 30 ALI GN ME NT 10 8-3 20
3. DISASSEMBLY AND REPLACEMENT 3-1. Removal of the FRONT LOADING Ass’y (Fig. 3.1) 3-2. Disassembly of FRONT LOADING Ass’y (FIg. 3.2~3.5) a. Remove the washer holding the door opener and separate F/L Assembly by moving the DOOR OPENER in the direction of arrow. b. Remove the 2 screw holding the TOP PLATE and separate the CASSETTE HOLDER Ass’y by moving the FL BRKT L and FL BRKT R in the direction of arrow. (Fig. 3.2) NOTE: Remove the FRONT LOADING Ass’y in eject mode. a.
c. Separate the LOADING LEVER Ass’y by pressing the connection point from the CASSETTE HOLDER Ass’y. (Fig. 3.4) d. Remove the SAFETY SPRING connecting the SAFETY LEVER and CASSTTE HOLDER PLATE. (Fig. 3.3) e. Remove the RELEASE SPRING connecting the RELEASE LEVER and SAFETY LEVER. (Fig. 3.3)3- 3. Disassembly of DRUM Ass’y (Fig. 3.5) a. Turn over the DECK MECHANISM and holding the DRUM TOTAL Ass’y @ with hands, remove the 3 screw holding the drum total assembly with mainbase. b.
3-4. Disassembly of LOADING RACK, LOADING ASS’Y, S/T SLANT POLE ASS’Y (Fig. 3.6, 3.7) 3-5. Disassembly of the A/C HEAD ASS’Y (Fig. 3.8) a. Remove the CONNECTOR @ from the AC HEAD Ass’y, use caution not to damage the HEAD connector pins. b. Separate the AC HEAD Ass’y ! after removing the screw #. a. Turn the DECK MECHANISM over and remove the LOADING RACK@ after unscrewing the SCREW !. b. Remove the R LOADING AS # and L LOADING AS $. c.
3-6. Disassembly of the LC BRKT ASS’Y, PINCH LEVER TOTAL ASS’Y (Fig. 3.9) a. Separate the LC BRKT Ass’y @ after removing 3 screws !. b. Separate the LC BRKT Ass’y @ from the DECK MECHANISM. c. Remove the PINCH LEVER TOTAL Ass’y #. CAUTION: • After the assembly of the PINCH LEVER TOTAL Ass’y, adjust the tape transmission section by refering to chapter 5. • Be careful not to get grease or other foreign materials on the surface of the pinch roller $.
3-8. Disassembly of the S/T BRAKE ASS’Y (Fig.3.12) a. Separate the CAPSTAN MOTOR % after the removal of 3 screws $ holding the capstan motor. a. Unhook the S BRAKE SPRING # from the MAINBASE HOOK !. b. Remove the S BRAKE Ass’y @ from the mainbase. c. Remove the T BRAKE SPRING ^ from the MAINBASE HOOK $. d. Remove the T BRAKE Ass’y %. 3-11. Disassembly of the FE HEAD (Fig. 3.13) a. Remove the screw ^ and separate the FE HEAD & from the MAINBASE. FIg. 3.
3-12. Disassembly of the REEL TABLE, IDLER PLATE TOTAL ASS’Y (Fig. 3.15) 3-13. Disassembly of the REEL BRKT TOTAL ASS’Y, CONNECT PLATE (Fig. 3.16) a. Remove the POLY WASHER ! and separate the IDLER PLATE TOTAL Ass’y @ from the mainbase. b. Remove the REEL TABLE $ from the REEL TABLE POST # of the MAINBASE. a. Turn over the DECK MECHANISM and remove 2 screws !. b. Remove the REEL BRKT TOTAL Ass’y @ from the MAINBASE. c.
4. MECHANICAL ADJUSTMENT 4-1. Mechanical Adjustment (Fig. 4.1~4.4) In case of disassembly and reassembly for fixing the mechanical problem, check the following check point. a. Make sure that the DATUM HOLE of the CAM GEAR is aligned with the DATUM HOLE in the MAINBASE in the EJECT mode as shown in Fig. 4.1. b. Make sure that the ending part “A” of the RELAY LEVER assembled on the CONNECT PLATE is aligned with the reference hole “B” of the MAINBASE as shown in Fig. 4.2. c.
d. Make sure that the triangular mark “A” of the L LOADING Ass’y is aligned with the mark “b” of the R LOADING Ass’y. (Fig. 4.4) e. Reference hole “C” of the LOADING RACK should be aligned with the reference hole of the R LOADING Ass’y to make the teeth of the LOADING RACK is aligned as shown in Fig. 4.4. 4-2. Adjustment and measurement of the BACK TENSION (Fig. 4.5, 4.6) a. Check that the location of the TENSION POLE is in the right position. If not, adjust that by refering to the “4.
4-3. Mechanical Mode (Operate without a cassette tape) a. Remove the FRONT LOADING Mechanism from the DECK Mechanism. b. Cap the IR LED and pull the FL RACK. This has the same effect with cassette loading to the deck. c. If the S/T POLE BASE is loaded, Play mode starts automatically. If you want other function, press the corresponding button. d. Turn off the power when the Mechanism is in the desired position. 4-4. Adjustment of the position of the TENSION POLE (Fig. 4.6) a.
5. ADJUSTMENT OF TAPE TRANSPORTING SYSTEM The tape transport has been precisely alined in the factory and normally does not require readjustment. However if adjustment is required, refer to the following chart. FIg.5.1 A schematic diagram of the tape transport section If any components shown in Fig. 5.1, tape transport section are changed. To readjust the tape transporting section.
A. Adjustment of the S/T GUIDE ROLLER D. Adjustment of the AUDIO AZIMUTH(Fig. 5.4) a. Check the Playing back with a E-180 TAPE. b. Make sure that excessive tape wrinkle does not occure at eatch S.T GUIDE ROLLER. c. If tape wrinkle is observed at the S/T GUIDE ROLLER, turn the guide roller screw until there is not tape wrinkle. a. Play back the ALIGNMENT TAPE (DP2 : SP, PAL, 6KHz) b. Check the AUDIO output with a AUDIO LEVEL METER. c.
G. Adjustment of the LINEARITY(Fig. 5.7) S/W PULSE TEST PIN ENVELOPE TEST PIN Measurement Equipment OSILLOSCOPE VR CONTROL Adjustment S/T GUIDE ROLLER Test Point PATH ADJ. FIXTURE PATH ADJ.FIXTURE PATH ADJ.FIXTURE TAPE TRANSPORT SECTION FIg.5.5 Adjustment of the X-POSITION a. Connect the PT01 on the MAIN CIRCUIT BOARD with a PATH ADJ.FIXTURE. F. PLAYBACK PHASE ADJUSTMENT(Fig. 5.6) b. Play back an ALIGNMENT TAPE (DP2 : STAIR STEP). Test Points: Adjust: PT01 PIN # Video Out Jack REC SWITCH c.
H. Adjustment of the wave form of DRUM Entrance / Exit (Fig. 5.8) S/W PULSE TEST PIN ENVELOPE TEST PIN Measurement Equipment OSILLOSCOPE VR CONTROL Adjustment S/T GUIDE ROLLER Test Point e. PATH ADJ. FIXTURE PATH ADJ.FIXTURE f. PATH ADJ.FIXTURE TAPE TRANSPORT SECTION g. a. Connect the PT01 on the MAIN CIRCUIT BOARD with a PATH ADJ.FIXTURE. b. Play back an ALIGNMENT TAPE(DP-2 : STAIR-STEP signal) c. Connect the S/W PULSE TEST PIN on the PATH ADJ. FIXTURE with a CHANNEL-1 SCOPE PROBE. d.
K. Adjustment of the AUDIO AZIMUTH L. X-POSITION S/W PULSE TEST PIN ENVELOPE TEST PIN Measurement Equipment OSILLOSCOPE VR CONTROL Adjustment S/T GUIDE ROLLER Test Point Test Point AUDIO OUTPUT AUDIO OUTPUT JACK Measurement Equipment AUDIO LEVEL METER a. Connect the AUDIO output JACK with an AUDIO LEVEL METER. b. Play back the ALIGNMENT TAPE(DP-2:STAIR STEP 6KHz Signal). c. Check if the AUDIO output signal level is over : 9 ~-3dBm. d.
6. EXPLODED VIEW AND PARTS LIST 6-1.
6-2.
6-3.
6-4.
7. PARTS SLIST 7-1. Parts List of Deck Total ASS’Y LOC.
LOC.
