Sony Professional U-matic SP BVU-950 User manual

SONY.
VIDEOCASSETTE RECORDER
Lata ed ial
Tanne
pee
cn
PON
LEVEL
a
Es
Ps
Professional M¥]-matic/SF|
MAINTENANCE MANUAL
Volume 1 1st Edition
serial No.10001 and Higher

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 J of 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.
The shielded interface cable recommended in this manual
must be used with this equipment in order to comply with
the limits for a computing device pursuant to Subpart J of
Part 15 of FCC Rules.
TNVLIaAPWILERS NTUD RAD BEE ls 4th lH
(), ERAN AUS BRA BOER BMe LTE.
Ea, Bet Dita GLI MATS Ue) , RABA SE
e, (RSH) cCBRABMTAVIAST NU eERTS=OC
ee LET
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 l’usage des acquéreurs
de l’€quipement décrit 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 opérations ou entretiens de
equipement a moins d’une permission écrite 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 Ausrustung
bestimmt sind.
Die Sony Corporation untersagt ausdrucklich die Ver-
vielfaltigung jeglicher Teile dieser Anleitung oder den
Gebrauch derselben fur irgendeinen anderen Zweck als
die Bedienung oder Wartung der in dieser Anleitung
beschriebenen Ausriustung ohne ausdrickliche schrift-
liche Erlaubnis der Sony Corporation.

SONTYY.
VIDEOCASSETTE
RECORDER
BVU-950
SUPPLEMENT-1
(Applicable
Serial
No.10001
to
12240)
1st
Edition-1st
Edition
Revised
1
CONTENTS: Section 9. POWER SUPPLY/SYSTEM CONTROL ALIGNMENT
Section 10. SERVO SYSTEM ALIGNMENT
Section 11. AUDIO SYSTEM ALIGNMENT
Section 12. VIDEO SYSTEM ALIGNMENT
Section 13. TIME CODE SYSTEM ALIGNMENT AND OTHERS
Please file this SUPPLEMENT-1 to your own manual, and
replace the TABLE OF CONTENTS with attached one.
Professional M¥-matic| SPF |
MAINTENANCE
MANUAL
Volume 1
BVU-950(UC)
sony
Corporation
Printed
in
Japan
9-966-943-11
©
1987
1987.10.04

COVIAPIVICSMENTNSBROSHASSHICHO, SBA
AltheBeARORAZBHCUCES.
fEDC, BHOPFISLICMAMCHSULO, AAS GRE, RT
S) cRESBHCHAVIAPIVABPRISCCeRILET,
The material contained in this manual consists of
information that is the property of Sony Corporation and
is intended solely for use by the purchasers of the
equipment described in this manual.
Sony Corporation expressly prohibits the duplication of
any portion of this manual or the use thereof for any
purpose other than the operation or maintenance of the
equipment described in this manual without the express
written permission of Sony Corporation.
Le matériel contenu dans ce manuel consiste en
informations qui sont la propriété de Sony Corporation et
sont destinées exclusivement a l’usage des acquéreurs de
l@quipement décrit dans ce manuel.
Sony Corporation interdit formellement la copie de
quelque partie que ce soit de ce manuel ou son emploi
pour tout autre but que des opérations ou entretiens de
l@quipement a moins d’une permission écrite 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 Ausrustung bestimmt
sind.
Die Sony Corporation untersagt ausdricklich die
Vervielfaltigung jeglicher Teile dieser Anleitung oder den
Gebrauch derselben fur irgendeinen anderen Zweck als
die Bedienung oder Wartung der in dieser Anleitung
beschriebenen Ausrustung ohne ausdruckliche schriftliche
Erlaubnis der Sony Corporation.

TABLE OF CONTENTS
1. INSTALLATION
1-1. Operational Environment .................... 1-1
1-2. Installation Space ................. ee ee eee. 1-1
1-3. Input/Output Signal of the Connector ...... 1-2
1-4. Connection Connector................0000 eee 1-4
1-5. Select Switch Setting ....................0.. 1-4
1-6. Dial Menu Operation........................ 1-6
1-6-1. Button and Dial Settings .............. 1-6
1-6-2. Operation.............. 0. ce eee ee eee 1-6
1-6-3. ITEM/DATA............ 00.0 ccc cee eee 1-9
1-6-4. System Error................ eee eee eee 1-19
1-7. Recording of Time Code Character
and Title ....... 0... cc ccc cee ee 1-21
1-7-1. Setting the Time Code Character and
the Title...........0 0... ccc eee 1-21
1-7-2. Insert the Characters on the Playback
Picture .... 0... ccc cece cee eee es 1-26
1-7-3. Recording the Characters on the Tape 1-26
1-8. Rack Mounting....................e cece eee 1-27
1-9. Function Control Panel Positioning ........ 1-30
1-10. Use of the Function Control Panel as a
Remote Control Unit.....................45. 1-30
1-11. REMOTE 2 (24P) Connector................ 1-31
1-12. Supplied Accessories .................0 eee ee 1-31
1-13. Optional Accessories ................0 eee aee 1-32
2. TECHNICAL INFORMATION
2-1. Specifications ............... eee eee eee eee 2-1
2-2. Location of Main Parts .................... 2-3
2-2-1. Location of the Mechanical Main
Parts/Components................00ee0eee 2-3
2-2-2. Location of the Printed Circuit Boards 2-7
2-3. Printed Circuit Boards...................... 2-11
2-4. Cassette Removal Procedure when Normal
Ejection is not Possible .................... 2-13
2-5. The Tape Speed and Time in FF
and REW Mode...............0c0 cece eens 2-14
2-6. Timing Chart ................. ee eee eee eee ee 2-16
3. PERIODIC CHECK AND MAINTENANCE
3-1. System Control Operation Check............ 3-1
3-1-1. Play Back, F.FWD, REW, SHUTTLE,
JOG and Preroll Function Check ...... 3-1
3-1-2. Record Function Check ................ 3-4
3-1-3. Editing Function Check ................ 3-6
3-2. Hours Meter............... ccc cece eee 3-8
3-3. Cleaning Procedure...............-..0eee sees 3-8
3-3-1. Video Heads and Rotary Erase
Heads ....... cc cece cece eee eee teens 3-8
3-3-2. Stationay Heads ...........-.... eee eee, 3-8
3-3-3. Tape Movement Areas..............+--- 3-8
3-3-4. Slip-rings and Brushes .................. 3-8
3-4. Head Degaussing.................. cece eee. 3-9
3-5. Maintenance After Repairs.................. 3-9
3-6. Periodic Chech and Maintenance Schedule... 3-10
4. SERVICE INFORMATION
4-1. Removal and Installation of the Cabinet .. 4-1
4-2. Removal and Installation of the Function
Control Panel ........... 0.0.00. c cece eee eee 4-3
4-3. Removal of the Cassette-up Compartment .. 4-3
4-4. Service of the Special Printed Circuit
Boards ....... 0... cece cee cece ee eee ee ene 4-4
4-4-1. Service of the RP-30 Printed Circuit
Board ...... 0... ccc ce ee eee eee eee 4-4
4-4-2. Replacement of Parts on the HN-80
Printed Circuit Board .................. 4-4
4-4-3. Removal of the PD-37 Printed Circuit
Board ........ 0.0. ccc cece eee ene ee eees 4-4
4-4-4. Replacement of the MB-139 Printed
Circuit Board ............. 00. cece ee eee 4-4
4-4-5. Removal of the DR-53 and DR-59
Printed Circuit Boards.................. 4-6
4-5. Removal and Installation of the Power
Block 2... ccc eee eee teen e eee 4-6
4-6. Extension Board .....................- eee ee 4-7
4-7. Operation of the Unit Without Installing
the Cassette-up Compartment and
the Cassette Tape ................ ee ee eee ee 4-7
4-8. Spare PartS ........... cece eee eee eee es 4-7
4-9, Fixture...... 0.0... cece eee nes 4-8
4-10. Safety Check-out ............. 0.0. cece eee eee 4-9
5. REPLACEMENT OF MAJOR PARTS
5-1. Replacement of the Upper Drum Assembly 5-1
5-2. Replacement of the Drum Assembly........ 5-3
5-3. Replacement of the Capstan Motor ........ 5-3
5-4. Replacement of the Reel Motor............ 5-4
5-5. Replacement of the Head .................. 5-5
5-5-1. Replacement of the Audio/CTL Head .. 5-5
5-5-2. Replacement of the Time Code Head.. 5-6
5-5-3. Replacement of the Full Erase Head .. 5-7
5-6. Replacement of the Tension Detector
Block 2.0... ccc eee eee ee nee 5-7
5-6-1. Replacement of the S Tension
Detector ...... 0c cc cee cece eee eens 5-7
5-6-2. Replacement of the T Tension
Detector ...... ccc cece eee eee eee 5-8
5-6-3. Replacement of the CDS of the $
Tension Detector .............000e cee eeee 5-9
5-6-4. Replacement of the CDS of the T
Tension Detector..............000 ce eens 5-9
5-7. Replacement of the S Drawer Roller ...... 5-10
—1-—

0-8. Replacement of the Threading Ring 6-6. Pinch Lever Block Adjustment..............
System ... 0.2 ccc cence teen eens 5-10 6-6-1. Pinch Lever Preset Adjustment ........
9-8-1. Replacement of the Threading Ring.... 5-10 6-6-2. Pinch Roller Preset Adjustment ........
5-8-2. Replacement/Adjustment of the TG-5 6-6-3. Pinch Solenoid Installing Position
and TG-6 ...... cece ccc cence eens o-11 Adjustment ............. 00.0 c cece eee eee
5-8-3. Replacement/Adjustment of the 6-6-4. Pinch Solenoid Block Position
Threading Roller...................00005 5-12 Adjustment .......... 000.000 cece eee ee eee
5-8-4. Replacement of the Pinch Roller ...... 5-12 6-7. TIT Tape Sensor Position Adjustment........
5-9. Replacement of the Threading Gear Box 6-8. S Drawer Roller Block Limiter
System .... 2... cece e ee eees 5-13 Adjustment ............. 00 cee ccc neces
5-9-1. Replacement of the Threading Gear 6-9. Brake solenoid Position Adjustment ........
| Xo), 5-13 6-9-1. T Brake Solenoid Position Adjustment
9-9-2. Replacement of the Threading Motor .. 5-14 6-9-2. S Brake Solenoid Position Adjustment. .
5-9-3. Replacement of the Threading Belt .... 5-15 6-10. Reel Table Rotation Detector Block
9-10. Replacement of the Reel Table Rotation Position Adjustment .................0.0005.
Detector Block .......... 00.00 cece e cece eens 5-15 6-11. Cassette-up Compartment Adjustment........
5-11. Replacement of the Pinch Solenoid ........ 5-16 6-11-1. Cassette-in Switch Position Adjustment. .
5-12. Items to be Adjusted After Main Parts 6-11-2. Cassette-down Switch Position
Replacement ........... 2.0. c eee ee ee eee eens 9-17 Adjustment .........-... 0000: cece eee aes
6-12. Leaf Spring Position Adjustment............
6. LINK AND DRIVE SYSTEM ALIGNMENT 6-13. Slip-ring Block Brush Position
Adjustment .......... 0.2... eee eee eee eee
Alignment Information ................0000 cee eeeee 6-1
6-1. Reel Table System Adjustment ............ 6-2 7. TORQUE SYSTEM ALIGNMENT
6-1-1. Cassette Holder Position Adjustment.... 6-2
6-1-2. Reel Table Height Adjustment.......... 6-3 7-1. S Brake Torque Adjustment................
6-1-3. Reel Motor Shaft Slantness 7-2. T Brake Torque Adjustment ..............
Adjustment ........... 0.00. cece cee n een ees 6-4 7-3. Sub Brake Adjustment......................
6-2. T Drawer Arm Block Adjustment.......... 6-9 7-3-1. Sub Brake Torque Adjustment..........
6-2-1. T Drawer Arm EJECT Position 7-3-2. Sub Brake Release Adjustment ........
Adjustment .......... 0.0.0 cece eee eee eee 6-5 7-4. Reel Motor Current Sensitive Adjustment
6-2-2. Unthread End Switch Position 7-4-1. S Reel Motor Current Sensitive
Adjustment ..............0. eee eee eee 6-6 Adjustment
6-3. S Tension Detector Adjustment ............ 6-7 7-4-2. T Reel Motor Current Sensitive
6-3-1. S Tension Detector Rollor Adjustment
Azimuth/Zenith Adjustment.............. 6-7 7-5. FWD Back Tension Adjustment
6-3-2. S Tension Detector Operating Point
Adjustment ............. 000 cee cece eens 6-8 8. TAPE RUN ALIGNMENT
6-4. T Tension Detector Adjustment ............ 6-9
6-4-1. T Tension Detector Guide Height 8-1. T Correction Guide Slantness Adjustment ..
Adjustment .......... 00.0: cece eee eee eee 6-9 8-2. PLAY Mode Tape Path Adjustment (1)....
6-4-2. T Tension Detector Guide Oprating 8-3. PLAY Mode Tape Path Adjustment (2)....
Position Adjustment .................... 6-10 8-4. FF/REW Mode Tape Path Adjustment ....
6-4-3. T Tension Detector Operating Point 8-5. FWDx5/REV x5 Search Mode Tape Path
Adjustment ......... 00... c eee eee eens 6-11 Adjustment ........ 2.0... cee cece eee
6-5. Threading System Adjustment .............. 6-13 8-6. Full Erase Head Zenith Adjustment ........
6-5-1. Threading Ring Rotation Adjustment 6-13 8-7. Audio Head Zenith Adjustment ............
6-5-2.
Gear
Box
Installing
Position
8-8.
Time
Code
Head
Adjustment
..............
Adjustment ............ 2... ecee eee aee 6-14 8-8-1. Time Code Head Zenith Adjustment....
6-5-3. Pinch Rollor Self Alignment 8-8-2. Time Code Head Azimuth Adjustment..
Adjustment ............--00 ee ee eee eee eee 6-15 8-8-3. Time Code Head Head-to-tape Contact
6-5-4. FR Detector Block Installing Position Adjustment ........... 0... 0c eee e eee ee eee
Adjustment .............0 02: e cece erence 6-16

8-9. Tracking Adjustment .....................05. 8-10
8-9-1. Video Tracking Adjustment ............ 8-11
8-9-2. Audio Head Height Ajustment.......... 8-14
8-9-3. Audio Head Azimuth Adjustment ...... 8-15
8-9-4. Audio Head Phase Adjustment.......... 8-15
8-9-5. Audio/CTL Head Position Adjustment .. 8-16
8-9-6. Time Code Head Height Adjustment .. 8-17
8-9-7. Time Code Head Position Adjustment .. 8-18
8-9-8. Switching Position Adjstment .......... 8-19
8-9-9. Drum Phase Adjustment ................ 8-20
8-10. Video Head Dihedral Adjustment .......... 8-22
9. POWER SUPPLY/SYSTEM CONTROL
ALIGNMENT
9-1. DC Voltage Regulator (UR-21)
Adjustment ........... 00.0 cee cece eee 9-]
9-2, Tape Sensor Balance Adjustment.... 9-2
10. SERVO SYSTEM ALIGNMENT
10-1. D/A Amplitude Adjustment.......... 10-2
10-2. Vertical Sep EN Pulse Adjustment.. 10-2
10-3. Capstan FG Bias Adjustment........ 10-3
10-4. Drum Free Speed Adjustment ...... 10-4
10-5. Tracking Control Adjustment ........ 10-5
10-6. SKEW Control Adjustment .......... 10-5
10-7. Reel FG Bias Adjustment .......... 10-5
10-8. Capstan Free Speed Adjustment .... 10-6
10-9. Capstan Acceleration Compensation
Adjustment ............. 00sec eee eee 10-6
10-10. Tracking Control Center
Adjustment ......... 00.0.0 cece cece 10-6
10-11. RE Muting Pulse Adjustment........ 10-7
10-12. Picture Splitting Compensator
Adjustment ............. 000. c cece eee 10-8
11. AUDIO SYSTEM ALIGNMENT
11-1. Audio REC Level Setting .......... 11-2
11-2. Audio Output Level Adjustment .... 11-2
11-3. Audio Monitor Output Level
Adjustment ...............000 cee eee 11-2
11-4. Audio Level Meter Adjustment...... 11-3
11-5. Limiter Level Adjustment............ 11-3
11-6. PB Frequency Response Adjustment 11-3
11-7. PB Output Level Adjustment........ 11-4
11-8. Audio PB Level Setting ............ 11-4
11-9. Spectral Skewing Adjustment ........ 11-4
11-10. PB Pilot Tone Level Adjustment .. 11-5
11-11. PB Pilot Tone Phase Adjustment .. 11-5
11-12. Pilot Tone Detect DC Balance
Adjustment .......... 0... cc cece eee 11-5
11-13. Dolby Detect Level Adjustment...... 11-6
11-14.
11-15.
11-16.
11-17.
11-18.
11-19.
11-20.
11-21.
11-22.
11-23.
11-24.
11-25.
11-26.
11-27.
11-28.
11-29.
11-30.
11-31.
Insert Mode Erase Current
Adjustment ..............0 ec ee ee eeeee 11-6
Audio Erase Pre-adjustment.......... 11-7
Bias Level Pre-adjustment .......... 11-7
Bias Oscillator Tuning Adjustment .. 11-8
Bias Trap Adjustment .............. 11-8
Insert Bias Trap Adjustment ........ 11-8
REC Bias Current Level Adjustment
CS) Sd 11-9
REC Bias Current Level Adjustment
(Conventional) ........... 0.0.0. e eee eee 11-9
REC Frequency Response Adjustment
CS) 5) 11-9
REC Frequency Response Adjustment
(Conventional) ..............0 000 e eee 11-10
REC Level Adjustment (SP) ........ 11-10
REC Level Adjustment (Conventional) 11-10
CH-1 Insert Crosstalk Cancel
Adjustment ............ 0.000 eee e eee 11-11
CH-2 Insert Crosstalk Cancel
Adjustment ............0 000. e cece eee 11-11
Dolby Detect Inhibit Adjustment .... 11-11
Pilot Tone REC Level Adjustment .. 11-12
Pilot Tone REC Phase Adjustment.. 11-12
Insert 20kHz Trap Adjustment ...... 11-13
12. VIDEO SYSTEM ALIGNMENT
12-1.
12-2.
12-3.
12-4.
12-5.
12-6.
12-7,
12-8.
12-9.
12-10.
12-11.
12-12.
12-13.
12-14.
12-15.
12-16.
PB RF Frequency Response
Adjustment (1) .......... 0... e eens 12-2
Audio Bias Trap Adjustment........ 12-3
Dropout Compensation Sensitivity
Adjustment ............ 0.00. e cece eens 12-4
RF Amplifier DC Balance
Adjustment ............ 0.00 ce eee e eee 12-4
PB RF Frequency Response
Adjustment (2) ...........0.e cece eens 12-5
Y RF Output Balance Adjustment .. 12-5
Y RF Output Level Adjustment .... 12-6
PB Chroma RF Balance
Adjustment .......... 0.0000. e eee eee 12-6
PB Chroma RF Level Adjustment .. 12-6
Carrier Balance Adjustment.......... 12-7
SP Mode Detection Adjustment...... 12-7
Demodulator Y Phase Equalizing
Adjustment (SP Mode) .............. 12-8
Phase Equalizing Tentative
Adjustment (Conventional Mode) .... 12-8
DUB Y PB Frequency Response
Adjustment (SP Mode) .............. 12-9
DUB Y PB Frequency Response
Adjustment (Conventional Mode) .... 12-9
Y Output Level Adjustment
(SP Mode) ............00ee eee Le ceee 12-10

12-17.
12-18.
12-19.
12-20.
12-21.
12-22.
12-23.
12-24.
12-25.
12-26.
12-27.
12-28.
12-29.
12-30.
12-31.
12-32.
12-33.
12-34.
12-35.
12-36.
12-37.
12-38.
12-39.
12-40.
12-41.
12-42.
12-43.
12-44.
12-45.
12-46.
12-47.
12-48.
12-49.
12-50.
12-51.
12-52.
12-53.
12-94.
12-95.
12-56.
Y Output Level Adjustment
(Conventional Mode) ................ 12-10
DOC Offset/Level Adjustment........ 12-11
Phase Equalizing Adjustment
(Conventional Mode) ................ 12-11
SP/CONV DC Shift Adjustment 12-12
SP/CONV DC Balance Adjustment .. 12-12
1H-Delay CCD Linearity
Adjustment ............. 00. e cece eee 12-12
2H-Delay CCD Linearity
Adjustment ........... 00.0 cee eee eene 12-13
1H-Delay CCD Level/Phase
Adjustment ............ 0.00 cece encase 12-13
2H-Delay CCD Level/Phase
Adjustment ............0 0000 eee eee 12-13
REC Chroma Balance Adjustment 12-14
Chroma Cancel Adjustment .......... 12-14
REC Y Frequency Response
Adjustment ............0.0 cece eee eee 12-16
VCO DC Level Adjustment.......... 12-16
Reference Oscillation Adjustment .... 12-16
4.27MHz Level Adjustment .......... 12-16
PB ACC Burst Gate Adjustment .... 12-17
PB APC Burst Gate Adjustment .... 12-18
PB ACC Level Adjustment (1)...... 12-19
DG Compensation Tentative
Adjustment .............0. cece eens 12-19
Converter Balance Adjustment ...... 12-20
PB ACC Level Adjustment (2) ...... 12-20
DUB Chroma Level Adjustment 12-20
TBC Chroma Output Level
Adjustment ............0 00 0c eee neces 12-21
High-Speed ACC Adjustment (1) 12-21
High-Speed ACC Adjustment (2) . 12-22
Chroma Noise Canceller Adjustment 12-22
TBC Y Output Level Adjustment .. 12-23
Rotary Erase Current Adjustment .. 12-23
Y Phase Equalizing Adjustment
(SP Mode) ...........0 00 cece ee eens 12-24
Y Phase Equalizing Adjustment
(Conventional Mode) ................ 12-24
Sync Tip Carrier Frequency
Adjustment (SP Mode) .............. 12-25
Sync Tip Carrier Frequency
Adjustment (Conventional Mode) . 12-25
FM Deviation Adjustment .......... 12-25
White Clip Adjustment (SP Mode) .. 12-26
White Clip Adjustment (Conventional
Mode)........ 0. cc cece cece een ee eens 12-26
Dark Clip Adjustment (SP Mode) .. 12-26
Subcarrier Trap Adjustment ........ 12-27
Modulator Balance Adjustment ...... 12-27
REC HF Balance Adjustment ...... 12-28
APC DC Adjustment ................ 12-28
12-57.
12-58.
12-59.
12-60.
12-61.
12-62.
12-63.
12-64.
12-65.
12-66.
12-67.
12-68.
12-69.
12-70.
12-71.
12-72.
12-73.
12-74.
12-75.
12-76.
12-77.
12-78.
12-79.
12-80.
12-81.
12-82.
3.58MHz OSC Adjustment
AFC Phase Adjustment.............. 12-29
Rotary Erase 4.27MHz Level
Adjustment .............. ccc cece eee 12-29
REC ACC Adjustment .............. 12-30
REC Chroma RF Level Adjustment 12-30
REC Current Frequency Response
Adjustment ......... 0.00.00 cece e eee 12-31
Y REC Current Adjustment ........ 12-32
Chroma REC Current Adjustment.... 12-33
Y/C Delay PB Adjustment
(SP Mode) ........... cc cece eee eens 12-34
Y/C Delay PB Adjustment
(Conventional Mode) ................ 12-34
Y/C Delay DUB Adjustment
(SP Mode) ........... 000 c eee eee en 12-35
Y/C Delay REC Adjustment
(SP Mode) ............c cece cence eee 12-36
Y/C Delay REC Adjustment
(Conventional Mode) ................ 12-36
DG Compensation Adjustment........ 12-37
Y/C Mixing Adjustment ............ 12-38
Time Code Gate Pulse Level
Adjustment ............ 0000. e cee ee eee 12-39
Video Meter Adjustment ............ 12-39
Tracking Meter Adjustment ........ 12-40
O.A Y RF Output Level
Adjustment ............ 00. ccc e eee aee 12-40
Y Noise Canceller Adjustment ...... 12-41
Y Phase Equalize Adjustment ...... 12-41
Y PB Frequency Response
Adjustment ........... 0.0.0 c eee wees 12-42
O.A DUB Y Phase Equalizing
Adjustment .......... 00.0.0 e cece nee 12-42
O.A Conventional Mode Y Phase
Equalizing Adjustment................ 12-43
PB Character Mix Adjustment ...... 12-43
REC Character Mix Adjustment .... 12-44
13. TIME CODE SYSTEM ALIGNMENT AND
13-1.
13-2.
13-3.
13-4.
OTHERS
TC PB Level Adjustment .......... 13-1
TC REC Level Adjustment.......... 13-2
Character Size Adjustment .......... 13-2
Character Position Adjustment ...... 13-3

SECTION 1
INSTALLATION
Ensure that the BVU-950 is installed in an area
which has a working environment as described below.
Only in this way can you be assured that the
superior performance of the unit, together with ease
of access for maintenance, will be maintained.
1-1. OPERATIONAL ENVIRONMENT
. Avoid areas where the BVU-950 will be exposed
to direct sunlight, or other’ strong’ direct
lights.
- Avoid installation in dusty areas or _ areas
where it will be subject to vibration.
. Avoid areas where strong electric or magnetic
fields are to be found.
. To prevent overheating of the BVU-950, ensure
that there is good air circulation around the
unit. Ensure that the ventilation holes in the
top and rear panels are not blocked.
- Avoid installation in a location near _ heat
sources. The unit should only be operated in a
temperature range from 5°C to 40°C.
1-2. INSTALLATION SPACE
The dimensions of the unit are shown in the
figure below.
. The rear of the unit must be at least 40 em
away from the wall for ventilation and
maintenance.
. If the BVU-950 is operated on a desk or in a
similar environment, ensure that the vertical
clearance above the unit is at least 40 em to
allow for easy access to the printed circuit
boards and mechanical parts. This space is not
necessary if the unit is mounted in a 19-inch
rack or console because the printed
circuit boards can be repaired after the unit
is pulled out.
I=
SoS J]
070 @ OF ;
oo (88888 Fie o
219
--_—
N\ t
*)
N © 0 0 o ~ | BB - ! Fl lg |
qcsa
colo
oad
oe
=
Ld
| ° °° ~
[add
&
jada
@}!
77
|
ae
e
|| b- 24 | LL 463 |
-__________—_— 348 —_____-_—+ _|
424
—
___
-
552
When the BVU-950 is mounted in a rack. 752
he
£
=
maximum
traveling
distance
1
2
587
£6
.
;
l
ss —+30 height of the handle ! When the 8 E990 is mounted
<
E
y
1
I
>< y, ; I
2 8 Littittlllel \ ;
.
__
a
=
SSS
SSS
!
O°
ti
ot
)
|
Mm [| f | 71
center
L997.
-—
132.5
Le
unit: mm
1-1

1-3. INPUT/OUTPUT SIGNAL OF THE CONNECTOR
The input and output signals of the main connectors
on the connector panel are as follows:
INPUT
VIDEO IN
DUB IN
REF VIDEO IN
(EXT SYNC IN
SC IN
AUDIO IN
TIME CODE IN
OUTPUT
VIDEO OUT 1/2
DUB OUT
RF (OFF TAPE)
AUDIO OUT
: 1.0 + 0.3 Vp-p, syne negative,
75 Ohms, unbalanced
: Luminance signal:
1.7 + 0.2 Vp-p,
sync negative,
impedance 1 k Ohm +10 %
Chroma signal:
0.9 + 0.1 Vp-p,
impedance 1 k Ohm +10 %
: 1.0 + 0.2 Vp-p, 75 Ohms,
unbalanced
0.2 Vp-p to 5 Vp-p, negative,
75 Ohms, unbalanced)
; 2 + 1, - 1.5 Vp-p, 75 Ohms,
unbalanced
: LOW:
-60 dB, 3 k Ohms, balanced
HIGH:
+4 dB, 10 k Ohms/600 Ohms,
balanced
: 0 +6 dB, 10 k Ohms, unbalanced
(0 dB = 1.55 Vp-p pulse)
: 1.0 + 0.2 Vp-p, syne negative,
75 Ohms, unbalanced
: Luminance signal:
1.7 + 0.2 Vp-p,
sync negative,
impedance 50 Ohms +10 %
Chroma signal:
0.9 + 0.1 Vp-p,
impedance 50 Ohms +10 %
: 0.5 Vp-p, 75 Ohms,
unbalanced
; LINE:
+4 dBm, balanced,
600 Ohm load
MONITOR:
+4 dBm, balanced,
1-2
TIME CODE OUT
REF VIDEO OUT
600 Ohm load
HEADPHONES:
-46 dB to -26 GB,
8 Ohm load, stereo
: 0 + 3 dB, low impedance,
unbalanced
(0 dB = 1.55 Vp-p pulse)
:Without the TBC Board:
No output
With the TBC Board and an
input signal at REF VIDEO IN:
Same level as REF VIDEO IN
(1.0 + 0.2 Vp-p), 75 Ohms,
unbalanced
With the TBC Board, but without
an input signal at REF VIDEO IN:
B.S. (0.28 Vp-p/0.28 Vp-p),
75 Ohms, unbalanced
MONITOR
VIDEO : 1.0 + 0.2 Vp-p, syne negative,
75 Ohms, unbalanced
8P
Pin I/O Signal
1 | AUDIO MONITOR OUT (X)
2 | VIDEO OUT (X)
3 | NC
4 | NC
5 | AUDIO MONITOR OUT (G)
6 | VIDEO OUT (G)
7| NC
8 | NC
REMOTE CONTROL
REMOTE 1 (9P)
Pin
Description
1/0
FRAME GND
TRANSMIT A
RECEIVE B
RECEIVE COMMON
SPARE
TRANSMIT COMMON
TRANSMIT B
RECEIVE A
omo;la;rsn]
o
|
oi]
&
|
&
|
bd
|
=
FRAME GND

REMOTE 2 (24P)
Pin I/O Signal Specification
1 +5 V OUT MAX. 100 mA
2 | L-STOP COMMAND IN L: less than 1.5 V, H: more than 3.5 V, pulse width is more than 50 msec.
3 | L-F FWD COMMAND IN L: less than 1.5 V, H: more than 3.5 V, pulse width is more than 50 msec.
4 | L-PLAY COMMAND IN L: less than 1.5 V, H: more than 3.5 V, pulse width is more than 50 msec.
5 | L-REW COMMAND IN L: less than 1.5 V, H: more than 3.5 V, pulse width is more than 50 msec.
6 | L-STANDBY COMMAND IN L: less than 1.5 V, H: more than 3.5 V, pulse width is more than 50 msec.
7 | L-EJECT COMMAND IN L: less than 1.5 V, H: more than 3.5 V, pulse width is more than 50 msec.
8 | L-REC COMMAND IN L: less than 1.5 V, H: more than 3.5 V, pulse width is more than 50 msec.
9 | L-STOP STATUS OUT L: 0.8 V (less than 8 mA), H: 4.7 k Ohms pullup resistor
10 | L-F FWD STATUS OUT L: 0.8 V (less than 8 mA), H: 4.7 k Ohms pullup resistor
11 | L-PLAY STATUS OUT L: 0.8 V (less than 8 mA), H: 4.7 k Ohms pullup resistor
12 | L-REW STATUS OUT L: 0.8 V (less than 8 mA), H: 4.7 k Ohms pullup resistor
13 | L-SSTANDBY STATUS OUT L: 0.8 V (less than 8 mA), H: 4.7 k Ohms pullup resistor
14 | L-CASSETTE IN STATUS OUT |L: 0.8 V (less than 8 mA), H: 4.7 k Ohms pullup resistor
15 | L-REC STATUS OUT L: 0.8 V (less than 8 mA), H: 4.7 k Ohms pullup resistor
16 | NC
17 | NC
18 |; NC
19 | NC
20 | NC
21 NC
22 | NC
23 | NC
24 GND
TBC REMOTE
Pin 1/O Signal
1 | SYNC CONTROL IN
2 | HUE CONTROL IN
3 | SC CONTROL IN
4 | VIDEO LEVEL CONTROL IN
5 | SET UP CONTROL IN
6 CHROMA LEVEL CONTROL IN
7 | -12 V OUT
8 | GND
9 | FRAME GND
10 | NC
11 NC
12 | NC
13 | NC
14 | NC
15 | +12 V OUT
1-3

1-4. CONNECTION CONNECTOR
When external cables are connected to various
connectors on the BVU-950 connector panel during
installation or maintenance, the hardware listed
below (or equivalent) must be used.
Panel Indication Connector
VIDEO IN
REF VIDEO IN
SC IN
VIDEO OUT 1/2 1-560-069-11
RF (OFF TAPE) PLUG, BNC, MALE
REF VIDEO OUT
MONITOR VIDEO
TIME CODE 1-560-069-11
PLUG, BNC, MALE
DUB IN 1-561-055-00
PLUG, 7P, FEMALE
DUB OUT 1-5 08-9 48-00
PLUG, 7P, MALE
AUDIO IN 1-508-084-00
CONNECTOR, 3P, MALE
AUDIO OUT 1-508-083-00
CONNECTOR, 3P, FEMALE
MONITOR 1-506-161-00
CONNECTOR, 8P, MALE
TBC REMOTE 1-508-495-00
PLUG, 9P, MALE
REMOTE 1 1-560-651-00
PLUG, 9P(M)
and
1-561-749-00
JUNCTION SHELL, 9P
REMOTE 2 1-506-897-11
CONNECTOR, 24P, MALE
1-5. SELECT SWITCH SETTING
Along with the select switches on the control panel
and the connector panel, the switches listed below
are on the circuit boards. These switches must
be set according to operating conditions.
- DM-54 Board
(i) $501: APC Switch
When the tape dubbed by VTR without capstan
is played back by BVU-950, the
is sometimes not colored because of
APC fluctuations.
APC
colored picture.
ON: WIDE (widen APC lock-range)
OFF: NORMAL
When the unit is shipped, this switch is set to
the OFF position.
If this switch is set to the ON position, the
colored picture
This switch should be turned to
servo system
picture
This switch can
to obtain the
unusual
widen lockrange so as
cannot obtain sometimes in
search mode.
the OFF position in the normal use.
- SV-88 Board
There are two switches, S201 and S202 on the SV-88
Board and they are closely related.
(i) S201 Bit?7: ON
Bit8: OFF
5202: OFF
A emergency circuit for reel stop, tape
drum stop and so on
This mode
slack, capstan error,
is not functioned in this mode.
is used in the mechanical alignment.
This mode is not set at the same time as
the following items (ii) and (iii).
(ii) $201 Bit7?: ON
Bit8: OFF
5202: ON
Set this mode, when’ operate’ the unit
without installing the Cassette-up
Compartment and cassette tape for’ the
mechanical alignment.
This mode is not set at the same time as
the items (i) and (iii).

(iii) $201 Bit 7: OFF
Bit 8: ON
5202: OFF
This mode release the H-lock mode.
This mode is not set at the same time as
the above items (i) and (ii).
(iv) $201 Bit5: ON
Bit6: ON
S202: ON
This mode is set for the sensitive alignment
of the reel torque without the cassette tape.
(v) S201 Bit3: ON
Bit4: OFF
5202: OFF
Set this mode, when the tape’ without
recording the CTL signal is played back,
the capstan rotate under the same state as
recorded.
(vi) $201 Bitl: OFF
Bit2: ON
S202: OFF
This mode cancel the function of phi-square
circuit.
When the unit is shipped, all switches, S201 and
S202 are set to the OFF positions.

1-6. DIAL MENU OPERATION
Various select switches are provided on the Front Panel and printed circuit board
(refer to Section 1-5 "Select Switch Setting"). The system controls (Still Timer,
Preroll Time, etc.) initially set at the factory can be arbitrarily modified using the
SEARCH dial, MENU button, DATA button, and SET button as in Section 1-5 Select
Switch Setting.
The dial menu has the following functions:
- BASIC FUNCTION
» ENHANCED FUNCTION
1-6-1. Button and Dial Settings
Search dial: Selects the ITEM, Modifies the DATA, Moves the cursor.
MENU button: Selects the ITEM when used with a search dial. MENU DATA SET
DATA button: Selects the DATA when used with a search dial. 0 O 0+
SET button : Writes the DATA into the memory.
1-6-2. Operation
<Put the unit into DIAL MENU operation mode>
The DIAL MENU opration data appears on the Front Panel's 7-segment display and
monitor (the video signals should be connected to the VIDEO IN terminal and the
monitor television should be connected to the MONITOR OUT terminal on the
Connector Panel).
Do not communicate between two VTRs (the RECORDER/PLAYER lamp on the Front
Panel is off).
(1) Set the REMOTE/LOCAL switch on the front panel to LOCAL.
(2) Put the unit into JOG mode (when the SHUTTLE lamp is on, press the SEARCH
dial).
(3) Press the STOP button and put into the STOP mode.
1-6

(4) Set the CTL/TC/DIAL MENU switch on the Front Panel to DIAL MENU.
The unit is put into the DIAL MENU mode and the <jLJp> lamp at the top of the
SEARCH dial lights.
7-segment display
Monitor
rargryriryryrury
a YY |
SETUP
ITEM-101
TIME CODE PRESET
TCG 00:00:00:00
When
the
unit
is
put
into
the
DIAL
MENU
mode
after
the
power
on
sequence,
the
following
ITEM
is
selected
automatically.
When
the
optional
time
code
(BK
U-905)
is
installed
into
the
unit
:
ITEM-101
When the optional time code (BK U-905) is not installed into the unit :
ITEM-103
(NOTE)
The
VTR
cannot
be
operated
normally
in
the
DIAL
MENU
operation
mode.
However,
the
PB.
PB/EE
select
switch
can
be
used
in
this
mode.
<Select the ITEM>
(5)
Turn
the
search
dial
while
pressing
the
MENU
button.
a
MENU
v00-O
7-segment display Monitor
- ri ri ITEM<t— Displayed while the MENU button
is pressed.
ITEM
No.
SET
UP
ITEM-200 <—
j When the SEARCH
[TEM No. dial is turned, the
ITEM contents) ITEM No. and
contents are changed.
SETUP GRADE «———_
BASIC
The data corresponding
DATA contents} to the ITEM No.
are displayed.
1-7

(6) Stop the dial when the desired ITEM is displayed, and then release the MENU
button.
When the DATA No. on the 7-segment and DATA contents on the monitor blink,
they can be modified as following method.
<Modify the data>
(7) Turn the dial while pressing the DATA button.
a ™
DATA
0 0+O
When data other than that set
‘ * DATA«— at the factory is displayed on
DATA No.
- the monitor, an
SET UP
ITEM-200
SETUP GRADE
asterisk (+)
appears (but does not appear on
the 7-segment)
— Displayed while the DATA
button is pressed.
ENH ANCED
(8) Stop the dial when the desired data is displayed, and release the DATA button.
<Set the data>
(9) Press the SET button.
SET
20 %+O
. The displayed data
‘
SET<{——
Displayed
while
the
SET
button
is
pressed.
(For
ITEM
SET
UP
Nos.
101
and
102,
displayed
ITEM-200
only when data is set.)
SETUP GRADE
ENHANCED
written into the memory, the data remains
unchanged even if the POWER switch is turned OFF.
. if the updated data is set, the <(JD> lamp at the top of the SEARCH
dial flashes for one second when the SET button is pressed.
The DATA
No. and DATA content blinking stops at that time.
1-8

1-6-3. ITEM/DATA
(1) BASIC FUNCTION
(NOTE) ITEM Nos. 101 and 102 are displayed only when an optional time code,
BK U-905 is installed into the VTR.
Item
Data
Item and Data Description
TCG 23:59
2:59:29
ITEM NO. | ITEM content | DATA NO. | DATA content
7-segment|monitor 7-segment} monitor
display display
101 TIME CODE 00000000 | TCG 00:00 Time code setting.
PRESET 7:00:00 | OOHOOMOOSOOFr through 23H59M59S29Fr
| | can be set.
23595929
Factory setting: DATA No.00000000
(TCG00:00:00:00)
Setting the data in the ITEM No. 101
(NOTE). Set the INT/EXT switch on the Sub-control Panel to INT.
- Set the SLAVE LOCK/PRESET switch on the Sub-control Panel to PRESET.
- Select whether the LTC time code should be used in the DF mode or NDF
mode in the ITEM No. 202.
fund
eS
ew
. Turn the SEARCH dial and blink the desired digit.
Sa ™
oo00+OC
DATA
BSB ot
O)
. Repeat the steps 1, 2 to set the desired figures.
4. When completed, press the SET button.
1-9
. Turn the dial while pressing the DATA button to set the desired figures.

Item Data
Item and Data Description
ITEM NO. | ITEM content | DATA NO. | DATA content
7-segment| monitor 7-segment| monitor
display display
102 U-BIT 00000000 | 00 00 00 00 | User bit setting.
PRESET Eight-digit data (hexadecimal) can
| | be recorded into a tape.
Data setting is the same as in ITEM
FFFFFFFF | FF FF FF FF |No.101.
Factory setting: DATA No.00000000
(00 00 00 00)
103 TITLE =| -------- The time code character and title
(SMALL) are set in a small letter (for
details, refer to Section 1-7).
104 TITLE ~—=— [| -------- The time code character and title
( LARGE) are set in a capital letter (for
details, refer to Section 1-7).
200 SETUP 0 BASIC DATA No.0
GRADE 1 ENHANCED BASIC:Enable to select ITEM from 101
to 200 in the DIAL MENU
operation.
DATA No.1
ENHANCED: Enable to select ITEM from
101 to 219 in the DIAL
MENU operation.
Factory setting: DATA No.0
(BASIC)

(2) ENHANCED FUNCTION
The ENHANCED FUNCTION can be used by setting data to ENHANCED in the ITEM
No. 200.
(NOTE) ITEM Nos. 202, 203, and 204 are displayed only when an optional time
code, BKU-905 is installed into the VTR.
Item
Data
Item and Data Description
ITEM NO. | ITEM content} DATA NO. |DATA content
7-segment| monitor 7-segment| monitor
display display
201 ERROR Error 01 REEL STOP Self-diagnostic function.
STATUS Error 02 TAPE SLACK When trouble occurs during normal
Error 03 CAPS TAN operation, message "ERROR CODE"
ERROR appears on the Front Panel's
Error 04 DRUM STOP 7-segment in any mode.
Error 05 REEL ERROR When the unit is put into the DIAL
Error 10 HUMID MENU mode to select this ITEM,
Error 20 SYSTEM error status corresponding to the
ERROR error code are displayed on the
Error 30 SENSOR monitor.
ERROR
Note: The ITEM data content cannot
be modified.
Normal operation: -------- (NONE)
202 DF/NDF 0 NDF Selects whether the LTC time code
SELECT 1 DF should be used in the DF mode or NDF
mode.
DATA No.0
NDF: Non-Drop Frame mode
DATA No.1
DF: Drop Frame mode
Note: After mode setting, be sure
to preset the time code in
the ITEM No.101.
Factory setting: DATA No.0 (NDF)

Item Data
Item and Data Description
ITEM NO. | ITEM content | DATA NO. |DATA content
7-segment|monitor 7-segment| monitor
display display
203 PHASE 0 OFF Selects whether or not the phase
CORRECT ION 1 ON correction of the LTC signal
generated using a time code
generator should be controlled.
DATA No.0
OFF: No phase correction is
controlled.
DATA No.1
ON: The phase correction is
controlled.
Factory setting: DATA No.1 (ON)
204 U-BIT 00 NOT sets the user bit status of the time
BINARY SPECI FI ED code signal generated using a time
GROUP FLAG 01 ISO code generator.
CHARACTER
10 UNASSIGNED1 | DATA No.00
11 UNASSIGNED2 | NOT SPECIFIED: Character setting is
not specified.
DATA No.01
ISO CHARACTER: 8-bit character
setting based on
1SO0646 and 1802022.
DATA No.10
UNASSIGNED1: Undefined
DATA No.11
UNASSIGNED2: Undefined
Factory setting: DATA No.00
(NOT SPECIFIED)