Sony GY-2120WD User manual

DIGITAL INFORMATION RECORDER
GY-2120WD
GY-2120WS
MAINTENANCE MANUAL
1st Edition (Revised 2)
Serial No. 10001 and Higher

!WARNING
This manual is intended for qualified service personnel only.
To reduce the risk of electric shock, fire or injury, do not perform any servicing other than that
contained in the operating instructions unless you are qualified to do so. Refer all servicing to
qualified service personnel.
!WARNUNG
DieAnleitung ist nur für qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt werden. Um die
Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei
Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen. Andere als die angegeben
Wartungsarbeiten dürfen nur von Personen ausgeführt werden, die eine spezielle Befähigung
dazu besitzen.
!AVERTISSEMENT
Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien.Afin
de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les
réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres.
Pour toute réparation faire appel à une personne compétente uniquement.

1
GY-2120WD/WS
Table of Contents
Manual Structure
Purpose of this manual .............................................................................................. 7
Contents ..................................................................................................................... 7
Relative manual ......................................................................................................... 7
1. Service Overview
1-1. Removal/Installation of Cabinet .................................................................1-1
1-1-1. Removal/Installation of Cabinet ................................................1-1
1-1-2. Cassette Compartment Removal/Installation .............................1-2
1-2. Main Parts Layout .......................................................................................1-3
1-2-1. Main Mechanical Parts Layout ..................................................1-3
1-2-2. Printed Circuit Boards Layouts ..................................................1-4
1-2-3. Function Descriptions and Sensors Layouts ..............................1-6
1-3. Setting of Switches and Jumper Plugs on Board ........................................1-8
1-4. Connector/Cable Information....................................................................1-10
1-5. Cassette Ejection in the Case of Tape Slack .............................................1-15
1-6. Fixtures and Measuring Equipment for Adjustment.................................1-16
1-6-1. Fixtures.....................................................................................1-16
1-6-2. Measuring Equipment ..............................................................1-18
1-6-3. Alignment Tapes ......................................................................1-19
1-7. Power Block ..............................................................................................1-20
1-7-1. Switching Regulator Replacement ...........................................1-20
1-7-2. Switching Regulator Fuse Replacement ..................................1-21
1-7-3. Fuse Replacement on IF-682/683 Board..................................1-21
1-7-4. How to Reset the Circuit Breaker ............................................1-21
1-7-5. Voltage and Power Requirements ............................................1-22
1-7-6. Power Cord...............................................................................1-22
1-8. Boards Replacement..................................................................................1-23
1-8-1. MA-83, MEM-83 and IF-682/683 Board Replacement...........1-24
1-8-2. DR-327 Board Replacement ....................................................1-25
1-8-3. MS-54 Board Replacement ......................................................1-26
1-8-4. SE-358 Board Replacement .....................................................1-28
1-8-5. EX-603 and EQ-66 Boards Replacement ................................1-29
1-9. LED Indicator Information on Board........................................................1-30
1-10. GY-2120 Control Software remo. exe ......................................................1-31
1-10-1. Connection ...............................................................................1-31
1-10-2. RS-232C Setting.......................................................................1-31
1-10-3. Activation and Screen Display.................................................1-31
1-10-4. Command Description .............................................................1-32
1-10-5. Tracking Adjustment Mode .....................................................1-32
1-10-6. Completion...............................................................................1-32

2GY-2120WD/WS
1-11. GY-2120 SCSI Control Software scsitool.exe ..........................................1-33
1-11-1. Operating Environment ............................................................1-33
1-11-2. Connection ...............................................................................1-33
1-11-3. Functions ..................................................................................1-34
1-11-4. Starting .....................................................................................1-46
1-11-5. Ending ......................................................................................1-46
1-12. Revision Label ..........................................................................................1-53
1-13. Download by Special Tool ........................................................................1-56
2. Periodic Maintenance and Inspection
2-1. Cleaning ......................................................................................................2-1
2-1-1. General Information for Cleaning ..............................................2-1
2-1-2. Rotary Heads Cleaning ..............................................................2-2
2-1-3. Lower Drum’s Tape Running Surface and
Lead Surface Cleaning ...............................................................2-3
2-1-4. Stationary Heads Cleaning .........................................................2-4
2-1-5. Tape Running System and Tape Cleaner Cleaning....................2-5
2-1-6. Cassette Compartment Cleaning ................................................2-6
2-2. Periodic Check ............................................................................................2-7
2-2-1. Hours Meter ...............................................................................2-7
2-2-2. Periodic Check List ....................................................................2-7
2-2-3. REC Current Automatic Adjustment .........................................2-9
3. Replacement of Mechanical Parts
3-1. General Information for Parts Replacement ...............................................3-1
3-1-1. Notes ..........................................................................................3-1
3-1-2. Index...........................................................................................3-2
3-1-3. Threading End Mode and Unthreading End Mode ....................3-4
3-1-4. L Cassette Position and S Cassette Position ..............................3-6
3-2. Reel Block ...................................................................................................3-8
3-2-1. Reel Table Assembly Replacement ...........................................3-8
3-2-2. Brake Lining Replacement .......................................................3-11
3-2-3. Reel Motor Assembly Replacement.........................................3-13
3-2-4. Reel Shift Motor Replacement .................................................3-20
3-3. Drum Block ...............................................................................................3-23
3-3-1. Upper Drum Assembly Replacement.......................................3-23
3-3-2. Brush/Slip Ring Assembly Replacement .................................3-31
3-3-3. Drum Assembly Replacement..................................................3-34
3-3-4. Cleaning Roller and
Rotary Head Cleaner Assembly Replacement .........................3-40
3-4. Drum Entrance Side Block........................................................................3-44
3-4-1. S Tension Regulator Assembly Replacement ..........................3-44
3-4-2. Tape Cleaner Replacement ......................................................3-48

3
GY-2120WD/WS
3-5. Threading Ring Block ...............................................................................3-49
3-5-1. CTL/TC Head Cleaner Replacement .......................................3-49
3-5-2. Pinch Roller Replacement........................................................3-52
3-5-3. Threading Ring Assembly Replacement..................................3-55
3-6. Drum Exit Side Block ...............................................................................3-61
3-6-1. CTL/TC Head Replacement.....................................................3-61
3-6-2. Capstan Motor Replacement ....................................................3-64
3-6-3. Pinch Press assembly Replacement .........................................3-68
3-6-4. Gear Box Assembly Replacement ...........................................3-71
3-6-5. T Tension Arm Replacement ...................................................3-74
3-6-6. T Drawer Arm Replacement ....................................................3-77
3-7. Overall Block ............................................................................................3-83
3-7-1. Fan Motor Replacement ...........................................................3-83
3-7-2. Air Filter Replacement .............................................................3-85
4. Mechanical Alignment
4-1. General Information for Mechanical Alignment.........................................4-1
4-2. Reel Motor Shaft Slantness Adjustment .....................................................4-2
4-3. Cassette Pillar Height Adjustment ..............................................................4-4
4-4. Reel Table Height Adjustment....................................................................4-6
4-5. Reel Brake Clearance Check.......................................................................4-9
4-6. Reel Brake Release Amount Adjustment..................................................4-10
4-7. Reel Table Rotation Sensor Position Adjustment.....................................4-12
4-8. Pinch Press Clearance Adjustment............................................................4-15
4-9. Slant Guide Slantness Adjustment ............................................................4-17
5. Tape Path Alignment
5-1. Genaral Information for Tape Path Adjustment..........................................5-1
5-1-1. Notes ..........................................................................................5-1
5-1-2. Preparation .................................................................................5-1
5-1-3. Connection (except measuring equipment)................................5-2
5-1-4. Parts Location of the Tape Running System..............................5-2
5-1-5. Locking Compound....................................................................5-3
5-2. CTL/TC Head Zenith Adjustment ..............................................................5-4
5-3. Tape Running Adjustment ..........................................................................5-6
5-4. Tracking Adjustment.................................................................................5-12
5-5. CTL/TC Head Height Adjustment ............................................................5-22
5-6. CTL/TC Head Azimuth Adjustment.........................................................5-25
5-7. CTL/TC Head Position Adjustment..........................................................5-28
5-8. Time Code Level Adjustment in Rev Mode .............................................5-31
5-9. Drum Head Height Check.........................................................................5-34
5-10. CH ERASE Signal Check .........................................................................5-36
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4GY-2120WD/WS
6. Maintenance Mode
6-1. Outline .........................................................................................................6-1
6-1-1. Equipment Required and Connection ........................................6-1
6-1-2. Activation of Maintenance mode ...............................................6-3
6-2. Command Description ................................................................................6-4
6-2-1. Self-Diagnosis Mode (DIAG) ....................................................6-7
6-2-2. Log Display Mode....................................................................6-23
6-2-3. Download Mode .......................................................................6-43
6-2-4. Vendor Information Set Mode .................................................6-45
6-2-5. Service Set Mode .....................................................................6-47
6-2-6. Drive Maintenance (MDRV) Mode .........................................6-57
6-3. Error Processing ......................................................................................6-132
6-3-1. Troubleshooting .....................................................................6-132
6-3-2. Analyzing Logs ......................................................................6-135
6-3-3. Error Messages .......................................................................6-157
6-3-4. Error Codes ............................................................................6-158
6-3-5. System Error Code .................................................................6-160
6-3-6. Countermeasures for Error Codes for GY-2120
and List of Main Maintenance Parts ......................................6-173
6-3-7. Troubleshooting .....................................................................6-176
6-3-8. Countermeasures for DIAG Error Codes and
List of Maintenance Parts.......................................................6-184
6-4. Electrical Alignment Overview...............................................................6-185
6-4-1. Equipment Required and Tools ..............................................6-185
6-4-2. Initialize of NV-RAM ............................................................6-186
6-4-3. Electrical Adjustment Items after Board Replacement ..........6-187
6-4-4. Electrical Adjustment Items after
DC-DC Converter Replacement ............................................6-189
6-4-5. Electrical Adjustment Items after
Mechanical Parts Replacement ..............................................6-190
6-5. Servo System Alignment.........................................................................6-192
6-5-1. Reel/Capstan System All Automatic Adjustment ..................6-193
6-5-2. S Reel FG Duty Automatic Adjustment.................................6-194
6-5-3. T Reel FG Duty Automatic Adjustment ................................6-194
6-5-4. Capstan FG Duty Automatic Adjustment ..............................6-195
6-5-5. S Reel Motor Offset/Friction Automatic Adjustment ............6-195
6-5-6. T Reel Motor Offset/Friction Automatic Adjustment ............6-196
6-5-7. S Reel Motor Torque Automatic Adjustment ........................6-196
6-5-8. T Reel Motor Torque Automatic Adjustment ........................6-197
6-5-9. S/T Tension Regulator Offset Automatic Adjustment ...........6-197
6-5-10. Free Speed Automatic Adjustment ........................................6-198
6-5-11. Drum Phase Automatic Adjustment.......................................6-198
6-5-12. Saves SV Adjustments Data...................................................6-199
6-5-13. Automatic-Tracking Function Check .....................................6-199

5
GY-2120WD/WS
6-6. RF System Alignment .............................................................................6-200
6-6-1. PB All Automatic Adjustment ...............................................6-201
6-6-2. PB Level Automatic Adjustment ...........................................6-202
6-6-3. PB PLL Automatic Adjustment .............................................6-203
6-6-4. PB Equalizer Automatic Adjustment .....................................6-204
6-6-5. REC Current Automatic Adjustment .....................................6-205
6-6-6. Saves RF Adjustments Data...................................................6-205
6-7. Adjustment from Front Panel..................................................................6-206
6-7-1. Electrical Adjustment after Board Replacement....................6-206
6-7-2. Electrical Adjustment after Mechanical Part Replacement ...6-208
6-7-3. Execution Example of Electrical Adjustment ........................6-209
7. Spare Parts
7-1. Notes on Spare Parts ...................................................................................7-1
7-2. Exploded Views ..........................................................................................7-2
Reel Chassis (S Side) Block .....................................................................7-4
Reel Chassis (T Side) Block .....................................................................7-6
Drum and Rotary Head Cleaner Block .....................................................7-8
FE Head and S Tension Regulator Block ...............................................7-10
Threading Ring and Pinch Roller Block .................................................7-12
CTL/TC Head and Capstan Motor Block ...............................................7-14
Pinch Press and Gear Box Block ............................................................7-16
T Tension Regulator Block .....................................................................7-18
Cassette Compartment Block..................................................................7-20
Printed Circuit Board (Bottom Side) Block............................................7-22
Ornamental Panel Block .........................................................................7-24
Front Panel Block ...................................................................................7-26
Connector Panel Block ...........................................................................7-28
Screws and Washers ...............................................................................7-30
7-3. Electrical Parts List ...................................................................................7-31
7-3-1. Frame List ................................................................................7-31
7-4. Supplied Accessories List .........................................................................7-33
7-5. Optional Fixtures List ...............................................................................7-34
8. Block Diagrams & Frame Wiring
Circuit Description of GY-2120 ...............................................................8-2
Overall ....................................................................................................8-3
Frame wiring .............................................................................................8-4

6GY-2120WD/WS
Appendex A Downloading of Firmware
A-1. Downloading of firmware using DTF tape ................................................A-1
A-1-1. Outline .......................................................................................A-1
A-1-2. Operating from the Front Panel.................................................A-1
A-1-3. Starting from RS-232C FDL Menu...........................................A-5

7
GY-2120WD/WS
Purpose of this manual This manual is the maintenance manual for Digital Information Recorder GY-
2120WD/2120WS.
This manual is intended for use by trained system and service engineers, and
provides the information for maintenance, and the information for service such as
replacement of boards.
Contents This followings are summaries of the each section for understanding the manual.
Section 1. Service Overview
Describes information about removal of cabinet, main parts layout, instance of
function of internal switches, connector input/output signals, replacement of part, the
fixture and measuring equipment.
Section 2. Periodic Maintenance and Inspection
Describes periodic check and cleaning procedure.
Section 3. Replacement of Mechanical Parts
Describes replacement of the main mechanical parts.
Section 4. Mechanical Alignment
Describes adjustment procedures after the mechanical parts replacement.
Section 5. Tape Path Alignment
Describes adjustment prcedures of tape path system.
Section 6. Maintenance Mode
Describes the servo system, RF system adjustment and the maintenance mode.
Section 7. Spare Parts
Describes the spare parts,
Section 8. Block Diagram
Describes the overall block diagram and frame wiring.
Appendex A Downloading of Firmware
Describes the downloading of firmware using DTF tape.
Relative manual Besides this maintenance manual, the following manual is available for the unit.
..
..
.Operation Manual(Supplied with the unit)
This manual is necessary for application and operation of the unit.
Manual Structure