Sony BVH-2000 User manual

he
handles
available.
panels
are optional I y

Warning-This equipment generates, uses, and can
radiate radio frequency energy and if not installed and
used in accordance with the instructions manual, may
cause interference to radio communications. It has
been tested and found to comply with the limits for a
Class A computing device pursuant to Subpart Jof Part
15 of FCC Rules, which are designed to provide
reasonable protection against such interference when
operated in a commercial environment. Operation of
this equipment in a residential area is likely to cause in-
terference in which case the user at his own expense
will be required to take whatever measures may be re-
quired to correct the interference.
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The material contained in this manual consists of infor-
mation that is the property of Sony Corporation and is
intended solely for use by the purchasers of the equip-
ment described in this manual.
Sony Corporation expressly prohibits the duplication of
any portion of this manual or the use thereof for any pur-
pose other than the operation or maintenance of the
equipment described in this manual without the express
written permission of Sony Corporation.
Le materiel contenu dans ce manuel consiste en infor-
mations qui sont la propriete de Sony Corporation et
sont destinees exclusivement a I'usage des acquereurs
de I'equlpement decrit dans ce manuel.
Sony Corporation interdit formellement la copie de quel-
que partie que ce soit de ce manuel ou son emploi pour
tout autre but que des operations ou entretiens de
l'equipernent a moins d'une permission ecrtte de Sony
Corporation.
Das in dieser Anleitung enthaltene Material besteht aus
Informationen, die Eigentum der Sony Corporation sind,
und ausschlieBlich zum Gebrauch durch den Kaufer der
in dieser Anleitung beschriebenen Ausrustunq
bestimmt sind.
Die Sony Corporation untersagt ausdrOcklich die Ver-
vielfaltiqunq jeglicher Teile dieser Anleitung oder den
Gebrauch derselben fur irgendeinen anderen Zweck als
die Bedienung oder Wartung der in dieser Anleitung
beschriebenen AusrOstung ohne ausdrOckliche schrift-
liche Erlaubnis der Sony Corporation.

BVH-2000 is a I-inch
TYPE "C" standard.
scanning VTR designed accordance with SMPTE
VTRs and the technical
has us
to develop this high reliability, high performance compact VTR. Performance has been
enhanced by the adoption of special new devices originally developed by Sony. The
....-r r... r)r1lnn'C'T or the
system has been made possible by using plug-in type TBC and the time code boards, while
easy tape threading is achieved by the incorporation of a highly accurate movable guide system.
Complete control of all system functions is now a reality thanks to sophisticated
changing the
control panel allows the VTR function to be expanded. The BVH-2000 VTR is compact
enough to use in mobile applications as well as a making a perfect studio console.
The following three types of the VTR are available:
The following three function control panels (option) are
Type I:
The BKH-2011 control panel is in-
stalled. VTR for Record/Playback
Type n.
The BKH-2012 control panel is in-
stalled. Standard VTR with edit
Type
The BKH-2013 control panel is
installed. Multi function editing VTR
20 key pad.
This manual
for the t ottow mo
BVH-2000(02) in this manual.
BVH-2000(OO): The model which has not the dynamic tracking function. The simultaneous
~1t1,"l:Th, .... nv of and
BVH-2000(02): The model equipped with a dynamic tracking function and the video and
audio confidence function.
BVH-2000( U/C)

2.
T BLE OF CONTENTS
Volume 1
ION
1-1. Features .
1-2. Specifications .
..., IJL.I.'J.I.l.U.I. Parts . . . . . . . . . .
Location and Parts .
1-4-1. Level Control Panel .
1-4-2. Level Control Panel Peripherals .
1-4-3. Function Control Panel - Type-I .
1-4-4. Function Control Panel -
1-4-6. Connector Panel .. .
1-5. Connections........... .
1-6. Preadjustmen .....................
1-6-1. Record Bias .
1-6-3. Board Adjustment . . .
1-7. Tape Threading " " .
1-8. Recording .........".............
1-9. Playback .
1-9-2. Shuttle . .
1-9-3. Jog " .
1-9-4. Program Jog .
1-9-5. Program Play .
VAR .
1-9-7. Capstan Override. .. . .
1-10. Manual Editing " " .
1-10-1. Assemble Editing .
1-10-2. Insert Editing " "...... . .
0-3. . .. . ..
1-11-1.
1-11-2.
1-11-3.
1-4.
1-5.
Basic Operation ... . . . . . . . . . . . . . . .
Audio Split Editing (Type-ill only) .
Editing with Two VTRs .
Monitor .
l... q ll~h1rtO and Lamps in
Edit Mode "." .. " .
1-11-6. Audio Split Edit Area " .
1-11-7. VAR Memory Mode Editing .. " .
1-11-8. Out Point Preview . .
Pre roll . .
1-13. Parallel Operation " .
1-14. Alarm .
BVH-2000(U/C) Volume 1 2nd Edition
BVH-2180(U/C) Volume 1 1st Edition
1-1
1-2
1-5
1-10
1-11
1-14
1-15
1-23
1-55
1-61
1-62
1-62
1-63
1-64
1-81
1-83
1-84
1-84
1-85
1-86
1-87
1-88
1-89
1-90
1-91
1-91
1-92
1-93
1-94
1-94
1-96
1-97
01
1-102
1-104
1-104
1-105
06
1-107
1-107
INSTALLATION
2-1. Unpacking & Repacking 2-1
2-2. Accessories Supplied 2-2
2-3. Connectors Cables 2-3
2-4. . . . . . . . . . . . . . . . . . . . .. . 2-4
2-S. Installation Conditions " 2-4
2-6. Installation Space 2-5
2-7. Mounting BKH-2011/2012/2013 Function Control
Panel 2-15
2-8. Console 2-15
2-9. Rack Mounting .. 2-16
2-10. BVT-2000 Modification 2-17
2-11. Function of Switches and Jumpers 2-24
2-1 Index of Switches and Jumpers . 2-24
2-1 EQ-02 Board .'. . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-26
2-11-4. DM-25 Board 2-27
2-11-5. MD-14 Board 2-27
2-11-6. LG-02 (A) Board ~. . . 2-28
......................... 2-29
2-1 Board . 2-30
2-11-9. SV-43 Board 2-31
2-11-10. RL-12 Board 2-31
2-11-11. CD-17 Board 2-32
2-1 Board . .. . 2-32
2-1 Board. . .. . 2-33
2-11-14. LA-02 Board 2-34
2-11-15. VM-01 Board 2-36
2-12. Notes on BVE-SOOO/P.BVE-3000/P Operation 2-37
2-12-1. BVE-SOOO/P .. . .. . .. .. .. .. .. . .. 2-37
Termination of OUT. 2-37
2-12-3. REMOTE Mode of BVH-2000/2180 2-37
2-12-4. Color Frame Editing using Plug-in TBC 2-37
2-13. Notes on BVR-I000 Operation 2-38
2-14. of Audio- 3 Monitor
............................ 2-38
2-1S. Selection of Time Code Output by TAPE/EE
Select Switch 2-39
-1-

3.
K AN
3-1. Periodic Check Item & Period 3-1(1/2)
3-2. Cleaning 3-3
3-3. Demagnetizing of Heads 3-4
3-4. Tracking Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-4
3-5. Head Projection Check & Upper Drum
Ket)la(~ement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-5
3-6. Replacement of the Head Drum Assembly .... 3-8
3-7. Slip Ring & Brush Cleaning & Replacment . . .. 3-11
3-7-1. Cleaning of Slip & Brush 3-11
3-7-2. Slip Ring & Brush Replacement 3-12
3-8. Replacement of the Slant Guide Assembly 3-13
3-8-1. Replacement of Entrance Slant Guide
................................. 3-13
3-8-2. Replacement of Exit Slant Guide Assembly 3-15
3-9. Reel Motor Replacement 3-16
3-9-1. S Reel Motor Replacement 3-17
3-9-2. T Reel Motor Replacement 3-22
3-10. Brake Band Replacement 3-27
3-11. Brake Solenoid Replacement 3-28
3-12. Replacement of the S Tension Arm Assembly 3-29
3-13. Replacement of the T Tension Arm Assembly 3-30
3-14. Air Damper Adjustment 3-31
3-15. Mini Tension Arm 3-32
3-16. Mini Tension Arm Solenoid Replacement . . . .. 3-33
3-17. Capstan Motor Replacement. . . . . . . . . . . . . . . . .. 3-34
3-18. Pinch Roller Replacement.. . 3-37
3-19. Pinch Roller Solenid Replacement . . . . . . . . . . .. 3-38
3-20. Audio/CTL R/P Head Replacement. . . . . . . . . .. 3-39
3-21. Audio/CTL Monitor Head Replacement. . . . . .. 3-40
3-22. Audio/CTL Erase Head 3-41
3-23. Other Parts Replacement 3-42
3-23-1. Roller Assembly Replacement. . . . . . . . . . . . .. 3-42
3-23-2. Reed Switch Replacement 3-43
3-24. Tape Path Adj. After Replacing the Parts 3-44
3-24-1. Adjustment Flowchart 3-44
3-24-2. Tape Path Check & Adjustment 3-45
3-24-3. Tension 3-51
3-24-4. Tape Speed Adjustment 3-52
3-24-5. Tracking Adjustment 3-53
3-24-6. CTL Head 3-59
3-24-7. PG Phase Adjustment 3-60
3-24-8. Overlap Adjustment 3-62
3-24-9. Audio/CTL R/P Head Adjustment 3-65
3-24-10. Audio/CTL Monitor Head 3-68
3-24-11. Audio/CTL Erase Head Height Adjustment ... 3-71
3-24-12. V/S Erase Head Height Adjustment. . . . . . .. 3-72
4.
4-1. Principal Components Location 4-1
4-2. Cabinet Removal 4-11
4-3. Notes on Power Unit 4-19
4-3-1. Capacity of AC Power Source 4-19
4-3-2. Voltage Selector Cover 4-19
4-3-3. Ventilation/Heat Sink 4-19
4-3-4. Primary Circuit & Electric Shock 4-20
4-3-5. Check of AC-39 Board 4-21
4-3-6. LEDs for DC Output Check 4-21
4-3-7. DC Output Terminals 4-21
4-3-8. PDS (Power Dead Sense) Function 4-21
4-4. Extracting/Inserting Plug-in Boards 4-24
4-5. Notes on Parts 4-24
4-6. Maintenance Tools/Fixtures 4-25
4-7. Alignment Tape BR5-2NTSC 4-29
4-8. of REC Inhibit Switch on
Front Panel 4-33
4-9. Manual Open/Close of Movable Guide 4-34
4-10. Error Messages 4-35
4-11. Function with Power-on 4-36
4-12. Self- Diagnosis During Normal Operation 4-37
4-12-1. When VTR Stops with "SYS ERR" Display 4-37
4-12-2. When VTR with
STANDBY Button Blinking 4-38
4-12-3. Error/Mode Display by LEDs on
RL-12 Board 4-38
4-13. Test Functions of System Control System 4-41
4-13-1. Test Mode Setting/Canceling 4-41
4-13-2. Softwave Version Check ('0 PROG NO?") 4-42
4-13-3. Lamp and BuzzerTest LAMP TEST?") 4-42
4-13-4. Display and Character Generator Test
("2 ALL CHAR?") .. .. .. . .. .. .. . .. .. .. . . . .. 4-42
4-13-5. Key and Dial Test ("3 KEY CHECK?") 4-43
4-13-6. Free Run Test 4-43
4-13-7. Test by Memory Readout 4-43
4-13-8. Designation and Test of Memory Address 4-44
4-13-9. Monitor of Common Memory 4-44
4-13-10. Contests of Common Memory Data 4-45
4-14. Servo Test Functions 4-57
4-14-1. Test Mode Setting/Canceling 4-57
4-14-2. Function of TEST-1 Switch (S4/CD-17) 4-57
4-14-3. Function of TEST-2 Switch (S5/CD-17) 4-59
4-14-4. Function of TEST-3 Switch (S6/CD-17) 4-59
-2-
BVH-2000(U/C) Volume 1 2nd Edition
BVH-2180(U/C) Volume 1 1st Edition

5.
EORY
5-1. General .
5-2. Tape Format 5-2
5-3. Audio Signal System 5-3-1
5-3-1. Outline of Audio Signal System 5-3-1
5-3-2. AP-06/12 Board 5-3-1
5-3-4. AU-27 Board 5-3-4
5-3-5. . 5-3-5
5-3-6. BE-02 Board 5-3-7
5-3-7. BE-03/BE-04 Board 5-3-8
5-4. Video . . . . . . . . . . . . . . . . . .. 5-4-1
5-4-1. Outline of Video Signal System 5-4-2
5-4-2. MD-14 . . . . . . . . . . . . . . . . . . . . . . . . .. . 5-4-2
5-4-3. EQ-02 Board . 5-4-5
5-4-4. DM-25 Board 5-4-7
5-4-5. RP-09 Board. . .. . 5-4-9
5-4-6. VM-01 Board . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-4-9
5-4-7. DR-13 . . .. . .
5-5. Dynamic Tracking System 5-5-1
5-5-1. Outline of DT 5-5-1
5-5-2. Principle of Arbitrary Playback . 5-5-1
5-5-3. DT-04 Board (DT-05 Board in PS model) 5-5-4
5-6. Control . . . .. .. 5-6-1
5-6-1. Outline of System Control System. . . . . . . .. 5-6-1
5-6-2. Outline of 5-6-1
5-6-3. Outline of SY-80 Board.. . . . . . . . . . . . . . . . .. 5-6-3
5-6-4. Outline of LG Board . . . . . . . . . . . . . . . . . . . .. 5-6-4
5-6-5. Control Panels . . . .. .. . 5-6-5
5-6-6. Outline of Remote Control 5-6-8
~VJl.l.l.l.l,lVJL.l Mem orv . . .. .. .. .. . ..
5-6-8. System Control/Servo Interface.. . . . . . . . . .. 5-6-13
5-6-9. Control/TC Board Interface . .. 5-6-16
5-7. Servo System . .. 5-7-1
5-7-1. Outline of Servo System 5-7-1
5-7-2. Outline of Drum Servo 5-7-3
5-7-3. Outline of Capstan Servo System 5-7-4
Outline of Reel Servo . . . . . . .. . .
5-7-5. CD-17 Board 5-7-6
5-7-6. RL-12 Board 5-7-12
5-7-7. SR-15 Board 5-7-16
5-7-8. SV-43 Board 5-7-20
BVH·2000(U/C) Volume 1 2nd Edition
BVH-2180(U/C) Volume 1 1st Edition
6.
~"~-II ... ENT
6-1. Erase Head . . . . . . . . . . . . . . . .. 6-1
6-2. DME Replacement. . . . . . . . . . . . . . . . . . .. . 6-2
6-3. Reel Motor Assy Replacement 6-3
6-3-1. Reel Motor
6-3-2. T Reel Motor Assy Replacement 6-8
6-5. Guide Post Replacement 6-16
6-6. Replacement of Slant Guide Components 6-17
6-6-1. Replacement of Entrance Slant Guide
Components 6-17
Components 6-20
7. GENERAL INFORMATION FOR
ALIGNMENT
7-1. Index of Alignment Components 7-1
8. PREPARATION FOR ALIGNMENT
8-1. Equipment Required 8-1
8-2. Test .. .. .. . . . . . . . . . . . . .. . . .
8-3. VITS Signal Insertion 8-2
8-4. . .
8-5. Initial Setting of the BVT-2000 8-4
8-5-1. Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8-4
8-5-2. Connector Panel 8-4
8-5-3. V.BLANKING LINE SELECT Switch
8-6. Initial Setting of the BVH-2000/2180 8-5
8-6-2.
8-6-3.
Function Control Panel . 8-5
Card Rack Block 8-5
-3-

9.
Switching Regulator Operating Check and
Adjustment 9-3
9-1-1. Fixture
Installation 9-3
Board Settings 9-5
1. FV-Ol Board 9-5
2. VV-Ol Board Setting 9-6
3. FV-02 Board Setting 9-7
4. AC- 39 Board Setting . . . . . . . . . . . . . . . . . . .. 9-8
AC-39 Board Part 9-8
Load 9-9
1. No Load 9-9
2. VTR Load. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-9
3. Standard Load 9-9
4. Critical Load . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-9
Preparation for Board Check and
Adjustment 9-9
Power Unit Check and Adjustment Procedure 9-10
AC Power Capacity Check 9-11
AC Check 9-11
Relay Switching Click Check with Power
ON/OFF 9-11
9-1-10. Power Unit No-Load Check 9-11
9-1-11. CT-38 (FV-Ol) Board Check 9-12
9-1-12. AC-39 Board Operation Check and
Adjustment 9-12
1. Check 9-12
2. Surge Current Protector Adjustment 9-13
3. Low AC Input Voltage Protector Adjustment 9-13
4. AC Protector
Adjustment 9-13
9-1-13. ST-21 (FV-Ol) Board Operation Check 9-13
9-1-14. CT-36 (FV-01/FV-02/VV-Ol) Board Operation
Check and 9-14
9-1-15. CT-37 (VV-Ol) Board Operation Check and
Adjustment 9-15
9-1-16. FV-03 Board Check and
Adjustment 9-16
9-1-17. RYI0l, 102/FV-01 Board Operation Check 9-17
9-1-18. PA-19 (FV-Ol) Board Operation Check and
Adjustment 9-17
9-1-19. Power Unit Loaded Output Voltage Check 9-18
9-1-20. VV-Ol Board Control Input Voltage Check 9-18
9-1-21. VV-Ol Board Motor Drive Check 9-18
9-2. PS-14 Board (Series Regulator) Operation Check 9-19
9-2-1. PS-14 Board Operation Check Procedure . .. 9-19
9-2-2. PS-14 Board Check 9-19
9-3. PS-14 Board (Series Regulator) 9-20
9-3-1. +5V Adjustment 9-20
9-3-2. + 12V Adjustment 9-20
9-3-3. -5V 9-21
9-3-4. -6V Adjustment 9-21
9-3-5. -12V Adjustment 9-21
9-1.
9-1-2.
9-1-3.
9-1-4.
9-1-5.
9-1-6.
9-1-7.
9-1-8.
9-1-9.
10-1. Adjustment Flowchart 10-1
10-2. Tape Path Check & Adjustment 10-2
10-3. Tension 10-7
10-3-1. S Side Tape Tension Adjustment 10-7
10-3-2. T Side Tape Tension Adjustment 10-8
10-4. . 10-9
10-5. Tracking Adjustment 10-10
10-5-1. Tracking Check 10-10
10-5-2. Tracking Adjustment 10-11
10-5-3. RFWaveform Check 10-16
10-6. CTL Head Position Adjustment 10-17
10-7. PG Phase Adjustment 10-18
10-8. Adjustment . . . . . . . . . . . . . . . . . . . . . . . . .. 10-20
10-9. Audio/CTL R/P Head Adjustment 10-23
10-10. Audio/CTL Monitor Head Adjustment 10-26
10-11. Audio/CTL Erase Head Height Adjustment 10-29
10-12. VIS Erase Head Adjustment 10-30
11. SERVO SYSTEM ALIGNMENT
11-1. SIT-reel & Timer Roller FG Duty Adjustment .... 11-5
11-2. S-tension Sensor . . . . . . . . . . . . . . . . .. 11-5
11-3. T-tension Sensor Adjustment 11-6
11-4. ND Conv. Reference Adjustment . . . . . . . . . . . .. 11-6
11-5. ND Converter Adjustment 11-7
11-6. DI A Converter Adjustment 11-7
11-7. Drum FG Amplifier Adjustment . . . . . . . . . . . . .. 11-8
11-8. Drum Velocity Adjustment 11-8
11-9. Capstan FG 11-9
11-10. Capstan FG Duty Adjustment 11-9
11-11. Capstan Velocity Adjustment 11-10
11-12. CTL Level . . . . . . . . . . . . . . . . . . .. 11-10
11-13. REC CTL Level Adjustment 11-11
11-14. Confi CTL Level Adjustment . . . . . . . . . . . .. 11-11
11-15. Drum PG Phase Adjustment 11-12
11-15-1. RIP Head 11-12
11-15-2. PLAY Head 11-13
11-16. Tape Speed Adjustment 11-13
11-17. Pedestal 11-13
11-18. Burst Gate Adjustment 11-14
11-19. H Gate Adjustment 11-14
11-20. Phase-Locked-Loop Adjustment 11-14
11-21. SC Phase Adjustment 11-14
11-22. S-ree1 Amplifier Offset Adjustment . . . . . . . . . . .. 11-15
11-23. S-ree1 Normal Torque Adjustment 11-15
11-24. S-reel Motor 11-15
11-25. T-reel Amplifier Offset Adjustment 11-16
11-26. T-reel Normal Torque Adjustment 11-16
11-27. T-reel Motor Torque Adjustment 11-16
11-28. S-reel Tention Offset Adjustment 11-17
11-29. IP Motor Adjustment. . . . . . . . . . . . . . . . . . . . . . . .. 11-17
-4-
BVH-2000(U/C)/PM Volume 1 2nd Edition
BVH-2180( U/C)/PM Volume 1 1st Edition

12-22.
2.
12-1. Line Amplifier Offset &Output Level
12-2.
12-3.
12-4.
Audio Level Calibration , . . .
PB Level Controls Calibration 12-5
PB Frequency Response Adjustment 12-6
f\Q,lus:tment .
12-6. Audio Erase Oscillator Frequency & Level
Adjustment 12-7
12-7. Earse
12-8. Video and
Current Adjustment 12-8
12-9. Audio Erase Current Adjustment. . . . .. 12-9
Adjustment 12-9
12-11. Audio (Audio/CTL Head) Bias Leak and
Bias .
12-12. Recording Level . . . . . . . . . . . . . . . . .. 12-11
12-13. Confi Level Adjustment (For 02 Model) . . . . . .. 12-12
12-14. Record AITl putter t' requencv I.J'ClC'~, ,, ,~
12-15. Crosstalk Level Adjustment 12-13
12-16. Rec CTL Level Adjustment. . . . . . . . . .. . 12-13
12-18.
12-19.
12-20.
PB CTL to Audio-3 Crosstalk Adjustment .....
CTL to Audio-3 Crosstalk Adjustment
Rec Audio-S PB CTL Crosstalk Adiustmcnt
Mode "-'l\.J;:)~l,aH'. Adiustment
Monitor Amplifier Frequency Response
Adjustment . .
Time
Time Code Output Level Adjustment .
Time Code Recording Level Adjustment
REC Bias Leak Adiustment .
12-14
12-15
12-15
12-16
12-16
12-24.
12-25.
12-26.
12-17
12-17
12-18
13. VIDEO SIGNAL SYSTEMALIGNMENT
13-1.
13-2.
13-3.
Video 13-5
Insert Character Level Adjustment 13-5
Video Monitor Level &
13-4. Waveform Monitor Output Level Adjustment. . .. 13-6
13-5. Input Video Level Adjustment 13-6
13-7.
13-8.
13-9.
JI. ....... J::;.,UH~t.V1 Adiustment . . . . . .. . ...
Video Level Preset Adjustment. . . . . . . . . . . . . . .. 13-7
Modulator Burst Timing Adjustment . . . . . . . . .. 13-7
Burst Level & Phase Adjustment .
13-11. FM Deviation Adjustment. . . . . . . . . . . . . . . . . . . .. 13-9
13-12. Modulator Freq. Response Adjustment . . . . . . .. 13-9
13-14. Modulator Free Run Freq. &Balance
Adjustment 13-10
Level Calibration 13-10
13-16. Burst DC Level Adjustment 13-11
13-17. Demod AGC Adjustment. .. .. 13-11
13-19. Demod Output Level Adjustment 2 13-12
13-20. Demod Balance Adjustment 13-12
13-22. Demod Burst Gate 13-13
13-23. Burst Level Detector Adjustment 13-13
13-24. Demod Freq. Response 13-14
13-26. Record Amplifier Presetting 13-15
13-27. Rotary Erase Level & Freq. Adjustment 13-16
&
13-29. Limiter Balance Adjustment 13-17
13-30. PB Freq. Response, DG & DP Adjustment' 13-18
13-30-1. EQ-02 Board Flowchart 13-18
Control .
13-30-3. RIP VIDEO DG, DP &Freq. Response
Adjustments. . . . . . . .. 13-19
13-30-5. PLAY VIDEO DG, DP & Freq. Response
Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13-21
PLAY VIDEO Moire 13-21
Adjustment 13-22
13-30-8. PLAY SYNC DG, DP &Freq. Response
13-31. VIDEO/SYNC Record System Adjustment ..... 13-23
13-31-1. Video Channel Freq. Response,
DP Adjustments . 13-23
DG & DP Adjustments 13-24
13-32. Dropout Detector Sensitivity Adjustment 13-25
13-34. Auto Chroma Level Adjustment 13-27
13-35. Dropout Detector Adjustment. . . . . . . . . . . . . . . .. 13-27
Adjustment . .. . .. . . .. ... 13-28
13-38. Video Output 3 Level Adjustment. . . . . . . . . . . .. 13-29
BVH-2000(U/C) Volume 1 2nd Edition - 5 -
80(U/C)

14. DT SYSTEM ALIGNMENT
14-1. Alignment Flowchart 14-1
14-2. Pots & Switches 14-2
14-3. +12V Adjustment 14-3
14-4. PB V Detector Adjustment 14-3
14-5. RF Balance Adjustment 14-3
14-6. DT Drive & Jump Signal D/A Levels Adjustment 14-4
14-7. Wobbling & DT Drive Levels Adjustment 14-4
14-8. RF Envelope Level Adjustment 14-5
14-9. Strain Gauge Level Adjustment 14-5
14-10. Feed-back Loop Adjustment 14-5
14-11. Wobbling Level Adjustment 14-5
14-12. Confirmation After Adjustment 14-6
14-12-1. Path Check in Reverse Direction 14-6
14-12-2. Picture Check in Normal 14-6
14-12-3. Head-to-Tape Contact Check at the
Mode Transition 14-6
14-12-4. Reset System Check with Excessive Speeds 14-6
14-12-5. Horizontal Shift Check 14-6
14-12-6. Color Frame Shift Check. . . . . . . . . . . . . . . . .. 14-6
14-12-7. Picture Movement Check 14-6
Volume 2
BLOCK
SCHE
LAYOUT DIAGor"'..............._--AN BOARD
Volume 3
D. REPLACEABLE PARTS AND OPTIONAL
FIXTU
-6-
BVH-2000(U/C) Volume 1 2nd Edition
BVH-2180(U/C) Volume 1 1st Edition