Sony DNW-A100 User manual

DIGITAL VIDEO HYBRID RECORDER
DNW-A100/A100P
DNW-A50/A50P
DNW-A45/A45P
MAINTENANCE MANUAL Part 2
Volume 1 1st Edition (Revised 1)
ANALOG COMPOSITE DECODER BOARD
BKDW-505/506
SDTI INPUT KIT
BKNW-103
ANALOG COMPONENT INPUT BOARD
BKNW-104
AES/EBU I/F KIT
BKNW-105

DNW-A100 Serial No. 10111 and Higher
DNW-A100P (UC) Serial No. 10001 and Higher
DNW-A100P (CE) Serial No. 10001 and Higher
DNW-A50 Serial No. 10001 and Higher
DNW-A50P (UC) Serial No. 10001 and Higher
DNW-A50P (CE) Serial No. 10001 and Higher
DNW-A45 Serial No. 10001 and Higher
DNW-A45P (UC) Serial No. 10001 and Higher
DNW-A45P (CE) Serial No. 10001 and Higher
BKDW-505 Serial No. 10001 and Higher
BKDW-506 (UC) Serial No. 10001 and Higher
BKDW-506 (CE) Serial No. 10001 and Higher
BKNW-103 Serial No. 10001 and Higher
BKNW-104 Serial No. 10001 and Higher
BKNW-105 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.
DNW-A100/A50/A45
DNW-A100P/A50P/A45P

1
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
Table of Contents
Manual Structure
Purpose of this manual .............................................................................................. 8
Contents ..................................................................................................................... 8
Related manuals....................................................................................................... 10
Caution for Handing the Unit with Built-in HDDs (for Part 2) ........................ 11
1. Service Overview
1-1. Circuit Protection Device (Fuse and IC Link) ............................................1-1
1-2. Memory IC with Backup Battery................................................................1-2
1-3. NV-RAM.....................................................................................................1-2
1-4. Alignment Tape...........................................................................................1-4
1-5. Extension Board ..........................................................................................1-7
1-6. PLCC IC Removal ......................................................................................1-7
1-7. Service Action after Replacing or Repairing the Mounted Circuit Board ..1-8
1-7-1. AC-169 Board ............................................................................1-8
1-7-2. AD-105 Board (BKNW-104).....................................................1-8
1-7-3. APR-12 Board ............................................................................1-8
1-7-4. APR-13 Board ............................................................................1-8
1-7-5. CCM-15 Board...........................................................................1-8
1-7-6. CL-29 Board...............................................................................1-8
1-7-7. CP-277 Board.............................................................................1-9
1-7-8. CP-278 Board...........................................................................1-10
1-7-9. CP-297 Board...........................................................................1-10
1-7-10. CP-300 Board (BKNW-103)....................................................1-10
1-7-11. CP-301 Board...........................................................................1-10
1-7-12. CP-308 Board (BKNW-105)....................................................1-10
1-7-13. DEC-65 Board (BKDW-505/506) ...........................................1-11
1-7-14. DIF-42 Board ...........................................................................1-11
1-7-15. DIF-44 Board (BKNW-105) ....................................................1-11
1-7-16. DM-89 Board ...........................................................................1-11
1-7-17. DPR-71 Board..........................................................................1-11
1-7-18. DPR-73 Board..........................................................................1-11
1-7-19. DR-315 Board ..........................................................................1-11
1-7-20. EQ-56 Board ............................................................................1-12
1-7-21. FP-91 Board .............................................................................1-12
1-7-22. KY-364 Board..........................................................................1-12
1-7-23. LP-81 Board .............................................................................1-12
1-7-24. MB-648 Board .........................................................................1-12
1-7-25. MS-50 Board............................................................................1-12
1-7-26. PC-70 Board.............................................................................1-12
1-7-27. PD-35 Board.............................................................................1-13

2DNW-A100/A50/A45
DNW-A100P/A50P/A45P
1-7-28. PTC-54 Board ..........................................................................1-13
1-7-29. PTC-59 Board ..........................................................................1-13
1-7-30. PTC-69 Board ..........................................................................1-13
1-7-31. PTC-71 Board ..........................................................................1-13
1-7-32. RM-82 Board ...........................................................................1-13
1-7-33. SE-341 Board ...........................................................................1-13
1-7-34. SE-344 Board ...........................................................................1-13
1-7-35. SE-378 Board ...........................................................................1-13
1-7-36. SS-63 Board .............................................................................1-14
1-7-37. SSX-1 Board ............................................................................1-14
1-7-38. SWC-30 Board .........................................................................1-14
1-7-39. SWC-31 Board .........................................................................1-14
1-7-40. TBC-23 Board ..........................................................................1-14
1-7-41. TBC-24 Board ..........................................................................1-15
1-7-42. TC-96 Board.............................................................................1-15
1-7-43. TR-78 Board.............................................................................1-15
1-7-44. TR-79 Board.............................................................................1-15
1-7-45. VPR-17 Board ..........................................................................1-15
1-7-46. VR-223 Board ..........................................................................1-15
1-7-47. VR-224 Board ..........................................................................1-15
1-8. Perfection after Replacing the Hard Disk Drive .......................................1-16
2. Electrical Alignment Overview
2-1. Notes on Electrical Alignment ....................................................................2-1
2-2. Outline of Electrical Alignment ..................................................................2-1
2-3. Required Equipment/Tools .........................................................................2-2
2-4. Internal Video Test Signal ..........................................................................2-3

3
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
3. Electrical Alignment
3-1. Power Supply Line Alignment....................................................................3-2
3-1-1. Output Voltage Check................................................................3-2
3-1-2. Output Voltage Adjustment .......................................................3-3
3-2. Dial Pulse Adjustment (PTC-69 Board) .....................................................3-4
3-3. Demagnetization Head Driving Voltage Adjustment (MS-50 Board)........3-6
3-4. Servo System Alignment.............................................................................3-7
3-4-1. Adjustment Overview ................................................................3-7
3-4-2. Servo Adjustment Data Initialization.........................................3-8
3-4-3. Servo Continuity Automatic Adjustment...................................3-8
3-4-4. Capstan Free Speed Adjustment ................................................3-8
3-4-5. RF Switching Position Adjustment ............................................3-9
3-5. RF System Alignment (EQ-56 Board)......................................................3-10
3-5-1. Adjustment Overview ..............................................................3-10
3-5-2. Betacam SX Format Overall RF System Adjustment..............3-11
3-5-3. Betacam / Betacam SP Format PB System
(EQ RF Output Level) Adjustment ..........................................3-12
3-5-4. Recording Current Adjustment ................................................3-15
3-6. Audio System Adjustment (APR-12/13 Boards) ......................................3-16
3-6-1. Adjustment Overview ..............................................................3-16
3-6-2. Common Preparation ...............................................................3-18
3-6-3. Analog Audio Outputs (CH1/2/3/4) Adjustment
(APR-13 Board) .......................................................................3-20
3-6-4. Analog Audio Offsets (CH3/4) Adjustment
(APR-13 Board) .......................................................................3-21
3-6-5. Analog Audio Inputs (CH3/4) Adjustment
(APR-13 Board) .......................................................................3-22
3-6-6. Analog Audio Monitor Outputs (L/R) Adjustment
(APR-12 Board) .......................................................................3-23
3-6-7. Analog Audio Offsets (CH1/2) Adjustment
(APR-12 Board) .......................................................................3-24
3-6-8. Analog Audio Inputs (CH1/2) Adjustment
(APR-12 Board) .......................................................................3-25
3-6-9. LAU PB System Adjustment (APR-12 Board)........................3-27
3-7. Video System Alignment (VPR-17 Board)...............................................3-32
3-7-1. Adjustment Overview ..............................................................3-32
3-7-2. Preparation in Standard System ...............................................3-34
3-7-3. Composite Video Output Adjustment (Standard System) .......3-35
3-7-4. Component Video Output Adjustment (Standard System) ......3-37
3-7-5. Component Video Output (Betacam) Adjustment
(525/60 System) .......................................................................3-39
3-7-6. Reference Color Frame Pulse Check
(Standard System only) ............................................................3-41
3-7-7. Internal 4fsc Frequency Adjustment ........................................3-43
3-7-8. Preparation in Another System ................................................3-44
http://getMANUAL.com

4DNW-A100/A50/A45
DNW-A100P/A50P/A45P
3-7-9. Composite Video Output Adjustment (Another System) ........3-45
3-7-10. Component Video Output Adjustment (Another System) .......3-47
3-7-11. Component Video Output (Betacam) Adjustment
(for DNW-A100P/A50P/A45P only in 525/60 System) ..........3-48
3-8. Analog Betacam PB System Alignment ...................................................3-49
3-8-1. Adjustment Overview ..............................................................3-49
3-8-2. Common Preparation ...............................................................3-54
3-8-3. Initial Data Settings ..................................................................3-55
3-8-4. EQ RF Output Level Adjustment .............................................3-56
3-8-5. Cosine Equalizer Adjustment ...................................................3-56
3-8-6. Cosine Equalizer Provisional Adjustment ...............................3-64
3-8-7. DM RF Output Level Adjustment............................................3-66
3-8-8. OMC Carrier Balance Adjustment ...........................................3-68
3-8-9. OMC Carrier Balance Provisional Adjustment........................3-71
3-8-10. Demodulator Limiter Balance Adjustment ..............................3-72
3-8-11. Non-Liner Output Level Adjustment .......................................3-74
3-8-12. PB Frequency Response Adjustment .......................................3-76
3-8-13. Drop-out Compensation Equalizer Adjustment .......................3-82
3-8-14. DM RF Output Level Readjustment ........................................3-83
3-8-15. RF Envelope Adjustment .........................................................3-84
3-8-16. Search Picture Adjustment .......................................................3-86
3-8-17. Guard Band Width Adjustment................................................3-88
3-8-18. Component Output Level Adjustment .....................................3-90
3-8-19. A/D Clamp DC Level Adjustment ...........................................3-93
3-8-20. VCO Lock-in Range Adjustment .............................................3-94
3-8-21. TBC VCO Free-running Adjustment .......................................3-95
3-8-22. FAST VCO Tracking Adjustment ...........................................3-96
3-8-23. PB Video Phase Adjustment ....................................................3-97
3-8-24. TBC Y/C Delay Rough Adjustment ......................................3-100
3-8-25. Impact Error Offset Adjustment.............................................3-102
3-8-26. TBC Y/C Delay Adjustment ..................................................3-103
3-8-27. VISC Phase Adjustment.........................................................3-105
3-9. TBC Remote Control Offset Adjustment (FP-91 Board) .......................3-109
3-10. SDI/SDTI I/O Lines Adjustment (CP-297 Board)..................................3-111
3-10-1. Adjustment Overview ............................................................3-111
3-10-2. VCO Free-running Frequency Automatic Adjustment ..........3-112
3-10-3. VCO Free-running Frequency Manually Adjustment............3-113
3-11. LTC Alignment and Full Erasure Current Check (TC-96 Board) ..........3-114
3-11-1. Adjustment Overview ............................................................3-114
3-11-2. LTC Playback Level Check ...................................................3-115
3-11-3. LTC Recording Level Check .................................................3-116
3-11-4. Full Erasure Current Check....................................................3-117
3-11-5. LTC Erasure Current Check...................................................3-117

5
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
4. Electrical Alignment for Optional Boards
4-1. DEC-65 Board (BKDW-505/506) ..............................................................4-2
4-1-1. Adjustment .................................................................................4-2
4-2. CP-300 Board (BKNW-103).....................................................................4-12
4-2-1. Adjustment ...............................................................................4-12
4-2-2. Operation Check.......................................................................4-14
4-3. AD-105 Board (BKNW-104)....................................................................4-15
4-3-1. Adjustment ...............................................................................4-15
4-4. CP-308 Board and DIF-44 Board (BKNW-105) ......................................4-28
4-4-1. Operation Check.......................................................................4-28
5. Replacement of Main Parts
5-1. General Information for Parts Replacement ...............................................5-1
5-1-1. Index...........................................................................................5-1
5-1-2. Threading End Mode and Unthreading End Mode ....................5-4
5-1-3. L Cassette Position and S Cassette Position ..............................5-6
5-1-4. Basic Knowledge .......................................................................5-8
5-2. Upper Drum Assembly Replacement..........................................................5-9
5-3. Drum Assembly Replacement...................................................................5-18
5-4. Cleaning Roller and Video Head Cleaner Assembly Replacement ..........5-27
5-5. AT Head Cleaner Replacement.................................................................5-32
5-6. Air Filter Replacement..............................................................................5-35
5-7. Pinch Roller Replacement.........................................................................5-37
5-8. CTL Head Replacement............................................................................5-40
5-9. Reel Motor Assembly Replacement..........................................................5-44
5-9-1. Replacement Procedure of the Reel Motor Assembly .............5-44
5-9-2. Reel Motor Shaft Slantness Adjustment ..................................5-52
5-9-3. Cassette Pillar Height Adjustment ...........................................5-55
5-9-4. Reel Table Height Adjustment.................................................5-57
5-9-5. Reel Brake Clearance Check....................................................5-60
5-9-6. Reel Brake Release Amount Adjustment.................................5-61
5-9-7. Reel Table Rotation Sensor Position Adjustment ....................5-63
5-10. Capstan Motor Replacement .....................................................................5-66
5-11. AT Head Replacement ..............................................................................5-71
5-12. Pinch Solenoid Replacement.....................................................................5-76
5-12-1. Replacement Procedure of the Pinch Solenoid ........................5-76
5-12-2. Pinch Press Clearance Adjustment...........................................5-84
5-13. Fan Motor Replacement............................................................................5-86
5-13-1. Fan Motor (Rear) Replacement................................................5-87
5-13-2. Fan Motor (PS) Replacement...................................................5-90
5-13-3. Fan Motor (HDD) and Fan Motor (MD) Replacement............5-91
5-14. Brush Slip Ring Assembly Replacement ..................................................5-97

6DNW-A100/A50/A45
DNW-A100P/A50P/A45P
5-15. Brake Solenoid Replacement ..................................................................5-100
5-16. S Tention Regulator Assembry Replacement .........................................5-110
5-17. T Tention Arm Replacement...................................................................5-112
5-18. T Drawer Arm Replacement ...................................................................5-116
5-18-1. T Drawer Arm Replacement ..................................................5-116
5-18-2. Slant Guide Slantness Adjustment .........................................5-122
5-19. Gear Box Assembly and Threading Motor Replacement .......................5-126
5-20. Threading Ring and Ring Roller Replacement .......................................5-133
5-21. Reel Table Assembly Replacement ........................................................5-149
5-22. Brake Lining Replacement......................................................................5-152
5-23. Tape Guide Replacement ........................................................................5-156
5-24. Tape Cleaner Replacement .....................................................................5-158
5-25. Full-erase Head Replacement .................................................................5-160
5-26. Cleaning Solenoid Replacement .............................................................5-165
5-27. Reel Shift Gear Replacement ..................................................................5-171
5-28. Reel Shift Motor Replacement................................................................5-176
5-29. Cassette Compartment Motor Replacement............................................5-181
5-30. Power Supply Block Replacement..........................................................5-185
5-31. Hard Disk Drive Replacement ................................................................5-189
5-31-1. Caution for Handling the Hard Disk Drive ............................5-189
5-31-2. Removal/Installation of Hard Disk Drive Unit ......................5-189
5-31-3. Hard Disk Drive Replacement ...............................................5-193
5-32. Replacement of Mounted Circuit Board .................................................5-198
5-32-1. CP-277 Board .........................................................................5-198
5-32-2. CP-278 Board .........................................................................5-199
5-32-3. CP-297 Board .........................................................................5-201
5-32-4. CP-300 Board (BKNW-103)..................................................5-202
5-32-5. CP-301 Board .........................................................................5-203
5-32-6. DR-315 Board ........................................................................5-204
5-32-7. FP-91 Board ...........................................................................5-206
5-32-8. KY-364 Board ........................................................................5-208
5-32-9. MB-648 Board .......................................................................5-209
5-32-10. MS-50 Board ..........................................................................5-213
5-32-11. SE-341 Board .........................................................................5-215
5-32-12. SE-378 Board .........................................................................5-216
5-32-13. SWC-30 Board .......................................................................5-217
5-32-14. SWC-31 Board .......................................................................5-220
5-32-15. TC-96 Board...........................................................................5-222
5-32-16. TR-79 Board...........................................................................5-223
5-32-17. VR-223 Board ........................................................................5-224
5-32-18. VR-224 Board ........................................................................5-226

7
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
6. Electrical Alignment after Replacement of Main Parts
6-1. General Information for Electrical Alignment............................................6-1
6-1-1. Notes on Electrical Alignment ...................................................6-1
6-1-2. Equipment and Tools Required..................................................6-2
6-1-3. Content of Alignment Tapes ......................................................6-4
6-2. Servo/EQ Alignment after Replacing the Drum .........................................6-7
6-2-1. Drum Phase Adjustment ............................................................6-8
6-2-2. PB Equalizer Adjustment ...........................................................6-9
6-2-3. Recording Current Adjustment ................................................6-10
6-3. Analog Video Playback System Adjustment after Replacing the Drum ..6-11
6-3-1. Preparation ...............................................................................6-13
6-3-2. EQ RF Output Level Adjustment.............................................6-16
6-3-3. DM RF Output Level Pre-adjustment ......................................6-19
6-3-4. OMC Carrier Balance Adjustment...........................................6-21
6-3-5. OMC Carrier Balance Adjustment (Provisional) .....................6-24
6-3-6. Demodulator Limiter Balance Adjustment ..............................6-24
6-3-7. PB Frequency Response Adjustment .......................................6-27
6-3-8. DM RF Output Level Adjustment............................................6-31
6-3-9. RF Envelope Adjustment .........................................................6-33
6-3-10. Impact Error Offset Adjustment...............................................6-34
6-3-11. TBC Y/C Delay Adjustment ....................................................6-35
6-4. Electrical Adjustment after Replacing the AT Head.................................6-37
6-4-1. Preparation ...............................................................................6-38
6-4-2. LAU PB Frequency Response Adjustment..............................6-40
6-4-3. LAU Dolby Level Adjustment.................................................6-42
6-4-4. LAU PB Level Adjustment ......................................................6-43
6-4-5. LAU PB Phase Adjustment......................................................6-44
6-4-6. LTC Erasure Current Adjustment ............................................6-45
6-4-7. LTC PB Level Check ...............................................................6-45
6-4-8. LTC OA Check ........................................................................6-46
6-4-9. LTC Erase Ratio Check ...........................................................6-47
7. Tape Path Alignment
7-1. Tape Path Adjustment .................................................................................7-1
7-1-1. AT Head Zenith Check and Adjustment ....................................7-6
7-1-2. Tape-running Check and Adjustment ........................................7-8
7-1-3. Video Tracking Check and Adjustment ...................................7-14
7-1-4. CTL Head Height Check and Adjustment ...............................7-26
7-1-5. CTL Head Position Check and Adjustment .............................7-28
7-1-6. AT Head Height Check and Adjustment .................................7-31
7-1-7. AT Head Azimuth Check and Adjustment ..............................7-34
7-1-8. AT Head Head-to-tape Contact Check and Adjustment ..........7-37
7-1-9. AT Head Position Check and Adjustment ...............................7-40
7-1-10. Audio Level Check and Adjustment in REV Mode.................7-42

8DNW-A100/A50/A45
DNW-A100P/A50P/A45P
Purpose of this manual This manual is the Maintenance manual part 2 volume 1 of digital video hybrid
recorder DNW series. DNW series includes the following models.
DNW-A100/A100P
DNW-A50/A50P
DNW-A45/A45P
This Maintenance manual part 2 is intended for use by trained system and service
engineers, and provides the information that premises the parts level service (parts
replacement, guideline for adjustment, schematic diagrams, board layouts, detailed
parts list) . Moreover, provides the information for the following optional boards.
BKDW-505/506 Analog Composite Decoder Board
BKNW-103 SDTI Input Kit
BKNW-104 Analog Component Input Board
BKNW-105 AES/EBU I/F Kit
This manual (volume 1) explains about parts replacement and guideline for adjust-
ment.
Contents This manual is organized by following sections.
Section 1 Service Overview
Explains the information of circuit protection devices, NV-RAMs, alignment tapes,
and extension boards, the removal of PLCC IC, and the service actions after replac-
ing/repairing the mounted circuit boards.
Section 2 Electrical Alignment Overview
Explains the overview for electrical alignment.
Section 3 Electrical Alignment
Explains the electrical alignment for the maintenance of this unit.
Section 4 Electrical Alignment for Optional Boards
Explains the electrical alignment for the maintenance of optional boards.
Section 5 Replacement of Main Parts
Explains the replacement of mechanical parts, power supply unit, hard disk drive
(HDD), and circuit boards.
Section 6 Electrical Alignment after Main Parts Replacement
Explains the electrical alignment associated with replacement of parts that are
described in Section 5.
Section 7 Tape Path Alignment
Explains the tape path alignment after replacement of parts that are described in
Section 5.
Manual Structure
Maintenance manual
part 2 volume 1
(9-967-659- )