Sony DSR-20MD Service Manual page 6

Section
5-11. TG2 Retainer, TG2 Arm Assembly (TG2 Plate Spring
and ET Magnet), S Tension Regulator Band Assembly
and TG2 Load Arm Assembly ................................ 5-19
5-12. TG7 Retainer, TG7 Arm Assembly (TG7 Plate Spring
and ET Magnet), T Tension Regulator Band Assembly
and TG7 Load Arm Assembly ................................ 5-20
5-13. S Reel Table Block Assembly ................................ 5-21
5-14. T Reel Holder and T Reel Table Block Assembly .. 5-22
5-15. S Reel Plate Assembly ........................................... 5-22
5-16. T Reel Plate Assembly ........................................... 5-24
5-17. TG1/8 Base Assembly, S Brake and T Ratchet ..... 5-25
5-18 TG3/6 Roller Assembly and TG3/6 Lock Spring .... 5-26
5-19. FL Joint Gear, TG5/6 Retainer and
Capstan Motor ........................................................ 5-26
5-20. FL Selection Arm, FL Relay Gear and FL Joint Arm
Assembly ................................................................ 5-27
5-21. Rotary Switch, TC Gear and Relay Gear .............. 5-27
5-22. GL Arm Retainer and GL Arm ............................... 5-28
5-23. M Slider and M Slider Arm ..................................... 5-28
5-24. TG7 Selection Arm, TG7 Cam Gear and
T Cam Gear ............................................................ 5-28
5-25. Main Cam, TG2 SL Arm Assembly and
Tension Coil Spring (TG2 SL) ................................ 5-29
5-26. TG3/4 Arm Block Assembly (TG3/4 Arm Assembly,
TG3/4 Limiter Spring and TG3/4 Gear), TG3/4 Base
Block Assembly (TG3/4 Base Assembly) .............. 5-30
5-27. TG5/6 Arm Block Assembly (TG5/6 Arm Assembly,
TG5/6 Limiter Spring and TG5/6 Gear), TG5/6
Base Block Assembly (TG5/6 Base Assembly) ..... 5-32
5-28. Reel Motor .............................................................. 5-34
5-29. RS Arm Assembly .................................................. 5-34
5-30. RS Gear Assembly, Mic Press Spring and
Mic Lever ................................................................ 5-34
5-31. Rack Joint Gear, Rack Holder, Mic Holder,
Rack (LC) and Rack (SC) ...................................... 5-35
5-32. Plate Link Assembly ............................................... 5-36
5-33. Roller Shaft Assembly and Roller Belt ................... 5-38
5-34. Lid Opener .............................................................. 5-39
5-35. C Door .................................................................... 5-40
5-36. Damper Arm and Tension Spring (DB) .................. 5-40
5-37. Gear (A), Gear (B), and C Worm ........................... 5-40
5-38. Tension Coil Spring (HS), Tension (DB), Shift Plate
Spring and C Sloat Block Assembly ...................... 5-41
5-1-6. Adjustments and Checks ....................................... 5-42
6-1. Adjustment Position ............................................... 5-42
6-2. Adjustment Order ................................................... 5-43
6-3. Adjustment and Checking Method ......................... 5-44
6-3-1. Reel Table Height Adjustment ................................ 5-44
6-3-2. TG2/TG7 Height Adjustment .................................. 5-45
6-3-3. FWD/RVS Position Adjustment .............................. 5-45
6-3-4. TG2/TG7 Electric Tension Regulator Adjustment .. 5-46
6-3-5. FWD/RVS Back Tension Adjustment ..................... 5-48
6-3-6. Adjustment Preparations and
RF Waveform Check .............................................. 5-49
6-3-7. Tracking Adjustment ............................................... 5-50
6-3-8. Tracking Check ....................................................... 5-51
6-3-9. CUE and REV Check ............................................. 5-52
6-3-10. Rising Check .......................................................... 5-53
6-3-11. Tape Path Check .................................................... 5-54
5-2. SERVICE MODE ......................................................... 5-55
5-2-1. Adjusting Remote Commander .............................. 5-55
1. Used Adjustment Remote Commander ................. 5-55
2. Precautions Upon Using The Adjusting Remote
Commander ............................................................ 5-55
5-2-2. Data Processing ..................................................... 5-56
5-2-3. Service Mode ......................................................... 5-57
1. Emergence Memory Address ................................ 5-57
1-1. EMG Code (Emergency Code) .............................. 5-57
5-3. VIDEO SECTION ADJUSTMENTS ............................ 5-58
3-1. Preparations Before Adjustment ................................. 5-58
3-1-1. Equipment Used ..................................................... 5-58
3-1-2. Connection of Equipment ....................................... 5-58
Title Page Section
3-1-3. Adjusting Connectors (RP 228 Board CN775) ...... 5-59
3-1-4. Checking the Input Signals .................................... 5-60
1. S Video Input .......................................................... 5-60
2. Video Input ............................................................. 5-60
3-1-5. Alignment Tapes ..................................................... 5-61
3-1-6. Input/Output Level and Impedance ....................... 5-62
3-2. Power Supply System Adjustment .............................. 5-62
1. Power Supply Voltage Check,
Power Block (U-2 Board) ........................................ 5-62
2. Video/Audio Block Power Supply Voltage Check,
Power Block (U-2 Board) ........................................ 5-62
3-3. System Control System Adjustment ........................... 5-63
1. Initializing the C, D, E Page Data ........................... 5-63
2. Input of C Page Initial Data .................................... 5-63
3. Input of D Page Initial Data .................................... 5-63
4. Input of E Page Initial Data .................................... 5-63
5. Modification of C, D, E Page Data ......................... 5-63
6. Page C Address List .............................................. 5-64
7. Page D Address List .............................................. 5-64
8. Page E Address List ............................................... 5-65
3-4. Servo System Adjustments ......................................... 5-66
1. Switching Position Adjustment (CM-56 Board) ..... 5-66
2. Capstan FG Duty Adjustment (CM-56 Board) ....... 5-66
3-5. Video System Adjustments ......................................... 5-67
3-5-1. RP-228 Board Adjustments ................................... 5-67
1. Recording Current Adjustment (RP-228 Board) .... 5-67
2. PLL fo Adjustment (RP-228 Board) ....................... 5-67
3. CLK Delay Adjustment (RP-228 Board) ................ 5-68
4. AGC Center Level Adjustment (RP-228 Board) .... 5-68
5. AEQ Adjustment (RP-228 Board) .......................... 5-69
6. PLL Capture Range Adjustment
(RP-228 Board) ...................................................... 5-70
7. IC774 41.85 MHz VCO Check (RP-228 Board) .... 5-70
3-5-2. JC-19 Board Adjustments ...................................... 5-71
1. A/D Converter Reference Voltage Adjustment 1
(JC-19 Board) ......................................................... 5-71
2. A/D Converter Reference Voltage Adjustment 2
(JC-19 Board) ......................................................... 5-71
3. Y Signal Clamp Reference Voltage Adjustment
(JC-19 Board) ......................................................... 5-71
4. CR Signal Clamp Reference Voltage Adjustment
(JC-19 Board) ......................................................... 5-71
5. CB Signal Clamp Reference Voltage Adjustment
(JC-19 Board) ......................................................... 5-71
6. Playback Y Signal Level Adjustment
(JC-19 Board) ......................................................... 5-72
7. Playback CR Signal Level Adjustment
(JC-19 Board) ......................................................... 5-72
8. Playback CB Signal Level Adjustment
(JC-19 Board) ......................................................... 5-73
9. IC422 27MHz XTAL fo Adjustment (JC-19 Board) 5-73
10. AFC Preliminary Adjustment (JC-19 Board) ......... 5-73
11. AFC Picture Frame Adjustment (JC-19 Board) ..... 5-74
12. AFC Adjustment (JC-19 Board) ............................. 5-74
3-5-3. VA-102 Board Adjustments .................................... 5-75
1. AGC Adjustment (VA-102 Board) .......................... 5-75
2. Analog E-E VIDEO Signal Output Level
Adjustment (VA-102 Board) ................................... 5-75
3. Analog E-E Y Signal Output Level Check
(VA-102 Board) ....................................................... 5-76
4. Analog E-E Chroma Signal Output Level Check
(VA-102 Board) ....................................................... 5-76
5. Decoder VXO Freerunning Frequency Adjustment
(VA-102 Board) ....................................................... 5-77
6. Video Input Y/C Separation Adjustment
(VA-102 Board) ....................................................... 5-77
7. Decoder HUE Adjustment (VA-102 Board) ............ 5-78
8. REC Y Level Adjustment (VA-102 Board) .............. 5-79
9. REC CR Level Adjustment (VA-102 Board) ........... 5-79
10. REC CB Level Adjustment (VA-102 Board) ........... 5-80
11. Encoder Freerunning Frequency Adjustment
(VA-102 Board) ....................................................... 5-80
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