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Section Title Page Section Title Page
3-12. Brake Arm S, Ratchet Brake T,
Tension Coil Spring (Brake), SBR Slider and FP-248
Flexible Board (Condensation Sensor) ................. 5-14
3-13. Reel Table Assembly, Idler Gear A Assembly
and Idler Gear B..................................................... 5-14
3-14. Reel Base Retainer, Reel Base T Assembly and
Reel Base S Assembly (Reel Lock Release Block
and Reel Lock Release Spring) ............................. 5-15
3-15. Cam Motor, Motor Holder....................................... 5-15
3-16. TG2/7 Arm Block, TG2/7 Band Block and
Tension Coil Spring (TG2)/(TG7) ........................... 5-16
3-17. Sub-slider Arm, Sub-slider, Encoder Gear ,
Main Cam Gear, Coupling Gear, Sub-cam Gear,
Pinch Slider and Loading Arm Assembly............... 5-17
3-18. Main Slider, Main Slider Arm and Pendulum
Stopper Assembly .................................................. 5-19
3-19. MD-76 Board and Encoder Retainer ..................... 5-20
3-20. Components of GL Arm S/T Assembly
(GL Arm Assembly , GL Helical Torsion Spring,
GL Gear)................................................................. 5-21
3-21. Components of MIC Base Assembly
(FP-104 Flexible Board, MIC Base)....................... 5-21
3-22. Components of Drum Assembly
(Motor FPC Assembly, Elastic Connector) ............ 5-22
3-23. Components of Pinch Arm Assembly (Tape Retainer,
Compression Coil Spring) ...................................... 5-22
3-24. Components of TG2/7 Arm Assembly (ET Magnet,
Magnet Holder) ...................................................... 5-22
5-1-4. Check and Adjustment ........................................... 5-23
4-1. Reel Table Height Check and Adjustment ............. 5-24
4-2. TG1/8 Height Check and Adjustment .................... 5-24
4-3. TG2/7 Height Check and Adjustment .................... 5-25
4-4. FWD/RVS Position Check and Adjustment ........... 5-25
4-5. Electric Tension Regulator Check and Adjustment
of TG2/7 Arm .......................................................... 5-26
4-6. FWD/RVS Back Tension Check and Adjustment .. 5-27
4-7. Preparation for Adjustment and
Tape Path Check .................................................... 5-28
4-8. Track Adjustment and Check
(Checking the RF Waveform) ................................ 5-29
4-9. Track Check ........................................................... 5-29
4-10. CUE/REV Check .................................................... 5-30
4-11. Curl Check and Adjustment ................................... 5-30
4-12. Rising Check .......................................................... 5-31
5-2. SERVICE MODE......................................................... 5-32
5-2-1. Adjusting Remote Commander.............................. 5-32
1. Used Adjustment Remote Commander ................. 5-32
2. Precautions Upon Using the Adjusting Remote
Commander............................................................ 5-32
5-2-2. Data Processing..................................................... 5-33
5-2-3. Service Mode ......................................................... 5-34
1. Setting the Test Mode ............................................ 5-34
2. Emergence Memory Address................................. 5-34
3. EMG Code (Emergency Code) .............................. 5-35
4. MSW Code ............................................................. 5-35
5. Bit Value Discriminatiion ........................................ 5-36
6. Record of Use Check ............................................. 5-37
5-3. VIDEO SECTION ADJUSTMENTS ............................ 5-38
3-1. Preparations Before Adjustment............................ 5-38
3-1-1. Equipment Used..................................................... 5-38
3-1-2. Connection of Equipment....................................... 5-39
3-1-3. Checking the Input Signals .................................... 5-40
1. S VIDEO Input ........................................................ 5-40
2. VIDEO Input ........................................................... 5-40
3-1-4. Adjustment Tapes................................................... 5-41
3-1-5. Input/output Level and Impedance ........................ 5-42
3-2. System Control System Adjustments .................... 5-43
1. Initializing the C, D, E Page Data .......................... 5-43
2. Input of C Page Initial Data .................................... 5-43
3. Input of D Page Initial Data .................................... 5-43
4. Input of E Page Initial Data .................................... 5-43
5. Modification of C, D, E, Page Data ........................ 5-43
6. C Page Table .......................................................... 5-44
7. D Page Table .......................................................... 5-45
8. E Page Table .......................................................... 5-45
9. Node Unique ID No. Input ...................................... 5-46
3-3. Servo and RF System Adjustments ....................... 5-48
1. Capstan FG Adjustment (HD-024 Board) .............. 5-48
2. PLL f0 Pre-adjustment (RP-234 Board) ................. 5-48
3. Switching Position Adjustment (HD-024 Board) .... 5-48
4. RF-AGC Adjustment (RP-234 Board) .................... 5-48
5. CLK DELAY and AEQ Adjustment
(RP-234 Board) ...................................................... 5-49
6. PLL f0 Final Adjustment (RP-234 Board) ............... 5-49
3-4. Video System Adjustments .................................... 5-49
3-4-1. JC-20 Board Adjustment ........................................ 5-49
1. VFD SPCK Adjustment (JC-20 Board) .................. 5-49
2. A/D Converter Reference Voltage
Adjustment (1) (JC-20 Board)................................ 5-49
3. A/D Converter Reference Voltage
Adjustment (2) (JC-20 Board)................................ 5-49
4. Y Signal Clamp Reference Voltage Adjustment
(JC-20 Board)......................................................... 5-50
5. CR Signal Clamp Reference Voltage Adjustment
(JC-20 Board)......................................................... 5-50
6. CB Signal Clamp Reference Voltage Adjustment
(JC-20 Board)......................................................... 5-50
7. AFC Preliminary Adjustment (JC-20 Board).......... 5-50
8. AFC Picture Frame Adjustment (JC-20 Board) ..... 5-50
9. AFC Adjustment (JC-20 Board) ............................. 5-50
10. Playback Y Level Adjustment (JC-20 Board) ........ 5-51
11. Playback C Level Adjustment (JC-20 Board) ........ 5-51
3-4-2. VD-031 Board Adjustment ..................................... 5-52
1. Decoder Free Run Adjustment (NTSC)
(VD-031Board) ....................................................... 5-52
2. Decoder Free Run Adjustment (PAL)
(VD-031Board) ....................................................... 5-52
3. Y/C Separation Adjustment (VD-031 Board) ......... 5-52
4. Recording Signal Level Adjustment
(VD-031 Board) ...................................................... 5-54
3-4-3. General Adjustment................................................ 5-56
1. HUE Adjustment (NTSC) ....................................... 5-56
2. HUE Adjustment (PAL)........................................... 5-56
3-5. AUDIO System Adjustments.................................. 5-57
1. Playing Level Check............................................... 5-57
2. E-E S/N Check ....................................................... 5-57
3. E-E Distortion Check .............................................. 5-58
3-6. Arrangement Diagram for Adjustment Parts .......... 5-60
6. REPAIR PARTS LIST
6-1. EXPLPODED VIEWS.................................................. 6-1
6-1-1. Overall Assembly ................................................... 6-1
6-1-2. Chassis Assembly-1............................................... 6-2
6-1-3. Chassis Assembly-2............................................... 6-3
6-1-4. Mechanism Deck Assembly (Drum Assembly)...... 6-4
6-1-5. Mechanism Deck Assembly (Gear, Arm) ............... 6-5
6-1-6. Mechanism Deck Assembly (Motor, MD Board).... 6-6
6-1-7. Mechanism Deck Assembly
(Cassette Compartment)........................................ 6-7
6-2. ELECTRICAL PARTS LIST......................................... 6-8
Hardware List ........................................................................ 6-29
Accessories & Packing Materials.......................................... 6-30