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TABLE OF CONTENTS SPECIFICATIONS ... 3 ACCESSORIES LIST ... 4 DISASSEMBLY INSTRUCTIONS ... 5 SERVICE POSITION ... 6 TEST TAPE INTERCHANGEABILITY TABLE ... 7 ELECTRICAL MAIN PARTS LIST ... 8 ~ 10 TRANSISTOR ILLUSTRATION ... 11 HARNESS DIAGRAM ... 12 BLOCK DIAGRAM ... 13 ~ 20 SCHEMATIC DIAGRAM POWER/TUNER/NICAM <7800/5850> ... 21 POWER/TUNER <1700/1400/1100> ... 22 AUDIO/VIDEO <7800/5850> ... 25 AUDIO/VIDEO <1700/1400/1100> ... 26 Fi AUDIO/SCART <7800/5850> ... 27 SCART <1700/1400> ... 28 SCART <1100> ... 29 SYSTEM CONTROL/SERVO/OSD <7800/5850> ... 32 KEY-1 <7800/5850> ... 40 KEY-1 <1700/1400/1100> ... 42 KEY-2 ... 44 WAVEFORM AUDIO/VIDEO SECTION ... 24 SYSTEM CONTROL/SERVO/OSD SECTION ... 34 VOLTAGE CHART POWER/NICAM SECTION ... 23 AUDIO/VIDEO SECTION ... 23 Fi AUDIO/SCART SECTION ... 30 SYSTEM CONTROL/SERVO/OSD SECTION ... 33 DISPLAY/LED DISPLAY ... 35 WIRING MAIN C.B <7800/5850> ... 36 MAIN C.B <1700/1400> ... 37 MAIN C.B <1100> ... 38 NICAM/A2 C.B <7800/5850> ... 39 KEY-1 C.B <7800/5850> ... 41 KEY-1 C.B <1700/1400/1100> ... 43 KEY-2 C.B ... 45 ADJUSTMENT ... 46 BLOCK DIAGRAM ... 47 DESCRIPTION ... 48 ~ 55 ELECTRICAL TROUBLESHOOTING ... 56 ~ 72 MECHANICAL EXPLODED VIEW 1/1 ... 73 MECHANICAL MAIN PARTS LIST 1/1 ... 74,75 MECHANISM EXPLODED VIEW 1/3~3/3 ... 76,78,80 MECHANISM MAIN PARTS LIST 1/3~3/3 ... 77,79,81 DECK MECHANISM PARTS LOCATIONS View ... 82 Bottom View ... 82 DECK MECHANISM DISASSEMBLY Drum Assembly ... 83 Plate Assembly Top ... 85 Holder Assembly CST ... 85 Guide CST ... 85 Bracket Side (L)/Bracket Assembly Door ... 85 Arm Assembly F/L ... 85 Lever Assembly S/W ... 85 Arm Assembly Cleaner ... 86 9. Head F/E ... 86 10. Base Assembly A/C Head ... 86 11. Brake Assembly S ... 87 12. Brake Assembly T ... 87 13. Arm Assembly Tension ... 87 14. Reel S & Reel T ... 87 15. Support CST ... 88 16. Base Assembly P4 ... 88 17. Opener Lid ... 88 18. Arm Assembly T/up ... 88 19. Arm Assembly Pinch ... 88 20. Belt Capstan/Motor Capstan ... 89 21.Clutch Assembly D33-Y ... 89 22. Lever F/R ... 89 23. Gear H-Up/D-K or Gear Up/D-K ... 89 24. Bracket Assembly Jog ... 90 25. Guide Rack F/L, Gear Rack F/L ... 90 26. Brake Assembly Capstan ... 90 27. Gear Drive/Gear Cam/Gear Connector ... 91 28. Bracket Assembly L/D Motor ... 91 29. Gear Sector ... 92 30. Base Tension/Plate Slider/Lever Tension ... 92 31. Gear Assembly P3/Gear Assembly P2 ... 93 32. Base Assembly P3/Base Assembly P2 ... 93 33. Arm Assembly Idler or Arm assembly Idler Jog ... 93 DECK MECHANISM ADJUSTMENT Tools and Fixtures for Service ... 94 1. Mechanism Alignment Position Check ... 95 2. Preparation for Adjustment ... 96 3. Checking Torque ... 96 4. Guide Roller Height Adjustment ... 97 4-1. Preliminary Adjustment ... 97 4-2. Precise Adjustment ... 97 5. Audio/Control (A/C) Head Adjustment ... 98 5-1. Preliminary Adjustment ... 98 5-2. Confirm that the Tape Passes smoothly between the Take-up Guide and Pinch Roller ... 99 5-3. Precise Adjustment (Azimuth Adjustment) ... 99 6. X-Value Adjustment ... 99 7. Adjustment after Replacing Drum Assembly (Video Heads) ... 100 8. Check the Tape Travel after Reassembling Deck Assembly ... 100 8-1. Checking Audio and RF Locking Time during Playback and after CUE or REV ... 100 8-2. Check for Tape Curling or Jamming ... 100 MAINTENANCE/INSPECTION PROCEDURE 1. Check before starting Repairs ... 101 2. Required Maintenance ... 102 3. Scheduled Maintenance ... 102 4. Supplies Required for Inspection and Maintenance ... 102 5. Maintenance Procedure ... 102 5-1. Cleaning ... 102 5-2. Greasing ... 103 MECHANISM TROUBLESHOOTING GUIDE 1. Deck Mechanism ... 104 ~ 106 2. Front Loading Mechanism ... 107 ~ 108