Sony DNW-A220 User manual

DIGITAL VIDEOCASSETTE RECORDER
DNW-A220
DNW-A220P
MAINTENANCE MANUAL Part 1
2nd Edition (Revised 4)
Serial No. 31001 and Higher
Serial No. 51001 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
Die Anleitung 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
DNW-A220
DNW-A220P
Table of Contents
Manual Structure
Purpose of this manual .............................................................................................. 5
Contents ..................................................................................................................... 5
Related manuals......................................................................................................... 6
1. Service Overview
1-1. Power Supply ..............................................................................................1-1
1-2. Connection Connectors/Cables ...................................................................1-2
1-3. Connector Input/Output signals ..................................................................1-3
1-4. Location of Main Parts and Circuit Function..............................................1-7
1-4-1. Identifying the Player and Recorder ..........................................1-7
1-4-2. Function and Location of Printed Circuit Boards ......................1-8
1-4-3. Location of Main Mechanical Parts .........................................1-10
1-4-4. Function and Location of Sensors............................................1-12
1-5. System of Cassette ....................................................................................1-14
1-6. Removing/Installing the Cabinet...............................................................1-16
1-6-1. Separating/Coupling the Player and Recorder .........................1-16
1-6-2. Battery Sub Panel .....................................................................1-17
1-6-3. Upper Frame.............................................................................1-18
1-6-4. Connector Panel .......................................................................1-20
1-6-5. Bottom Plate.............................................................................1-21
1-7. Removing/Installing the Cassette Compartment.......................................1-22
1-8. Disconnecting/Connecting the Printed Circuit Board...............................1-23
1-8-1. Plug-in Board ...........................................................................1-23
1-8-2. DM-114/114P Board ................................................................1-25
1-9. Settings for Internal Switches/Slit Lands..................................................1-26
1-10. Description on Internal Indicators.............................................................1-33
1-11. How to Take Out the Cassette Whose Tape is Slacked ............................1-38
1-12. Cleaning Clogged Video Heads ................................................................1-39
1-13. Power Protection .......................................................................................1-40
1-13-1. Reset of Breaker .......................................................................1-40
1-13-2. Information on IC Link ............................................................1-40
1-14. Battery for Memory Backup .....................................................................1-41
1-15. Fixtures and Adjustment Equipment List .................................................1-42
1-15-1. Fixtures.....................................................................................1-42
1-15-2. Equipment for Adjustment .......................................................1-45
1-16. Settings for External Editors .....................................................................1-46
1-16-1. Time Code Settings for Recorder.............................................1-46
1-16-2. VTR Constant Settings for External Editors ............................1-46
1-16-3. System Phase Adjustment ........................................................1-47
1-16-4. Setup Menu Setting of ITEM-701............................................1-47

2DNW-A220
DNW-A220P
1-17. Setup Menu ...............................................................................................1-48
1-17-1. Menu Operation .......................................................................1-48
1-17-2. F-Series items ...........................................................................1-49
1-18. Memory Card ............................................................................................1-50
2. Error Message
2-1. Overview of Error Message ........................................................................2-1
2-2. Details of Error Messages ...........................................................................2-3
3. Maintenance Mode
3-1. Overview of Maintenance Mode.................................................................3-1
3-2. TAPE Maintenance Mode (M0)..................................................................3-6
3-2-1. Overviews ..................................................................................3-6
3-2-2. SERVO CHECK Mode (C0) ...................................................3-14
3-2-3. RF CHECK Mode (C1) ............................................................3-26
3-2-4. AUDIO/VIDEO CHECK Mode (C2) ......................................3-37
3-2-5. BETACAM PB CHECK Mode (C3) .......................................3-41
3-3. Error Logger Display Mode (M2) .............................................................3-43
3-3-1. Outline ......................................................................................3-43
3-3-2. Display Mode ...........................................................................3-44
3-3-3. Setting Mode ............................................................................3-46
3-4. OTHERS CHECK Mode (M3) .................................................................3-48
3-4-1. Outline ......................................................................................3-48
3-4-2. ROM VERSION Display Menu (M30) ...................................3-49
3-4-3. SERIAL NUMBER Display Menu (M31) ...............................3-50
3-4-4. MEMORY CHECK Display Menu (M35) ..............................3-51
3-4-5. HOUR METER RESET Menu (M36) .....................................3-52
3-4-6. INT AUDIO SG LEVEL (M37) ..............................................3-53
3-4-7. MEMORY CARD UTILITY Menu.........................................3-54
3-5. Setup Maintenance Mode (M4) ................................................................3-61
3-5-1. Outline ......................................................................................3-61
3-5-2. EXTENDED MENU Display Selection Menu (M40) .............3-61
3-5-3. RESET ALL SETUP Executing Menu (M49) .........................3-62

3
DNW-A220
DNW-A220P
4. Periodic Maintenance and Inspection
4-1. Periodic Maintenance..................................................................................4-1
4-1-1. Index...........................................................................................4-1
4-1-2. Periodic Replacement and Check Item Table ............................4-2
4-1-3. Hours Meter ...............................................................................4-3
4-2. Cleaning ......................................................................................................4-4
4-2-1. Using Cleaning Tape..................................................................4-4
4-2-2. General Information for the Use of Cleaning Cloth...................4-4
4-2-3. Cleaning of Video Heads and Tape Running Surface
of Upper Drum ...........................................................................4-5
4-2-4. Cleaning of Lead Surface and Tape Running Surface
of Lower Drum...........................................................................4-6
4-2-5. Stationary Heads and Tape Cleaner Cleaning............................4-7
4-2-6. Tape Running System Cleaning.................................................4-8
4-3. Cares After Outdoor Use.............................................................................4-9
4-4. Video Head Tip Protrusion Check ............................................................4-10
4-4-1. Head Tip Protrusion Measurement ..........................................4-10
5. Spare Parts
5-1. Notes on Repair Parts..................................................................................5-1
5-2. Exploded Views ..........................................................................................5-2
5-3. Pulg-in Boards.............................................................................................5-3
5-4. Optional Accessories List ...........................................................................5-4
5-5. Fixtures List ................................................................................................5-5
6. Overall Block Diagram and Circuit Description
Appendix A Setting Check Sheet

5
DNW-A220/A220P
Purpose of this manual This manual is the maintenance manual part1 of digital videocassette recorder
DNW-A220/A220P.
This manual is intended for use by trained system and service engineers, and
provides the setting and maintenance information necessary at the time of primary
service.
Contents This manual is organized by following sections.
Section 1 Service Overview
Explains fundamental area of the information that is required to service, (removal of
cabinet and cassette compartment, the functions of printed circuit board, the loca-
tions of main part, fixture and measuring equipment information, notes, etc.) and the
measures against trouble.
Section 2 Error Message
Explains the error messages.
Section 3 Maintenance Mode
Explains each menu of the maintenance mode.
Section 4 Periodic Maintenance and Inspection
Explains the recommended periodic maintenance, and the cleaning procedure.
Section 5 Spare Parts
Describes the spare parts list and the exploded view for the service parts of this unit,
and the packing materials and supplied accessories list.
Section 6 Overall Block Diagram and Circuit Description
Describes the overall block diagram and the ciruit description.
Appendix A Setting Check Sheet
The sheet is used for checking the setup conditions such as switch, setup menu
under the application.
Manual Structure

6DNW-A220/A220P
Related manuals Besides this “maintenance manual part 1”, the following manuals are available for
digital videocassette recorder DNW-A220/A220P.
• Operation Manual (Supplied with the DNW-A220/A220P.)
This manual is necessary for application and operation of the DNW-A220/A220P.
• Maintenance Manual Part 2 (available on request )
This manual describes the information that premises the parts level service
(adjustments, board layouts, schematic diagrams, detailed parts list, etc.) for this
unit.
If this manual is required, please contact to Sony’s service organization.
• Protocol Manual of Remote (9-pin) Connector (available on request)
This manual explains the protocol for controlling the VTR via the RS-422A (9-pin
serial remote).
If this manual is required, please contact to Sony’s service organization.

1-1
DNW-A220
DNW-A220P
Section 1
Service Overview
1-1. Power Supply
The unit works either on AC current (using the AC adaptor) or battery. When repairing or checking the
unit, however, AC-operation is recommended.
Power Voltage: DC 11 to 17 V
Maximum Power Consumption (per VTR) : 61 W
m
.The AC adaptor AC-DN1 cannot be used to derive power.
.The unit consists of two VTRs. The AC adaptor AC-DN2/DN2A can supply power to the two VTRs
simultaneously. If the AC-DN2/DN2A is used, power on the VTRs and load cassettes in turn allowing
for an inrush current.
.If the AC-DN2/DN2A is not used, one AC adaptor (or one battery) per VTR is required .
.While the unit is battery-operated, the remaining battery capacity is displayed on the sub LCD. When
the battery is nearly dead, the WARNING indicator on the side of the LCD monitor will blink. For
details, refer to the operation manual supplied with the unit.
Connection example
DNW-A220/A220P
Rear View
Battery terminal
DC IN
AC adaptor
AC-DN2/DN2A
AC adaptor
AC-550/550CE
Lithium-ion battery
BP-L90/L60
Ni-cd battery
BP-90A
+
Battery adaptor
DC-L90
Ni-cd battery
BP-90A
+
Battery adaptor
DC-210
DC OUT
(DC cable)

1-2 DNW-A220
DNW-A220P
1-2. Connection Connectors/Cables
Connection made with the connector panels during installation or service, should be made with the
connectors or complete cable assemblies specified in the following list, or equivalent parts.
Panel indication Connection connector (Sony P/N) Connection cable (Sony P/N)
VIDEO REF IN Plug, BNC (1-564-742-11) RG-59B/U cable
VIDEO INPUT
VIDEO OUTPUT
TC IN
TC OUT
SDI IN Plug, BNC (1-564-742-11) BNC coaxial cable
SDI OUT (1-783-090-11:supplied with DNW-A220/A220P) or
BELDEN 8281 cable (Maximum cable length: 200m)
AUDIO INPUT XLR 3P, MALE (1-508-084-00) –––––––
AUDIO OUTPUT XLR 3P, FEMALE (1-508-083-00) –––––––
MONITOR OUTPUT
DC IN XLR 4P, FEMALE (1-508-362-00) DC power cord (1-551-577-00:supplied with AC-550/
550CE)
DC OUT Plug 4P MALE (1-566-425-11) –––––––
REMOTE Plug 9P MALE (1-560-651-00) 9P remote control cable
Shell, Junction 9P (1-561-749-00) (1-783-089-11:supplied withDNW-A220/A220P) or
RCC-5G(5 m)/10G(10 m)/30G(30 m)
AUX Plug 6P MALE (1-560-078-00) –––––––
HEADPHONES JM-60 stereo phone plug –––––––
(commercially available)
1-2. Connection Connectors/Cables

1-3
DNW-A220
DNW-A220P
1-3. Connector Input/Output signals
The left and right connector panels of the unit are provided with the same input/output connectors.
Communications connectors
6REMOTE D-SUB 9P connector x1 (RS-422A interface)
Remote control
![ AUX 6-pin connector x1
Input connectors
1AUDIO INPUT CH-1/CH-2 XLR 3-pin x2
Analog audio 2 channels
_60 dBu, 0 dBu, +4 dBu selectable, high impedance, balanced
2VIDEO REF.IN BNC x2 (In loop through connection, with 75 Ztermination switch)
External reference video signal (Black burst or composite sync)
40 IRE/0.3 Vp-p, 75 Z, negative sync
3VIDEO INPUT BNC x2 (In loop through connection, with 75 Ztermination switch)
Analog composite video 1.0 Vp-p, 75 Z, negative sync
!- SDI IN BNC x1
Component digital (270 Mbit/s) SMPTE 259M/ITU-R BT.656
8TC IN BNC x1
Time code 0.5 to 18.0 Vp-p, 10 kZ, unbalanced
!\ DC IN XLR 4-pin x1
DC +11 to 17 V
BATTERY IN 5-pin terminal x1
(on battery sub panel) Lithium-ion battery interface
REMOTE
TC IN
TC OUTSDI OUT
SDI IN DC OUT
DC-IN
AUX
12
VIDEOAUDIO INPUT
REF.
IN
AUDIO OUTPUT
ONOFF
75Z
ONOFF
CH-1
1/3
+48V +4dBu_60 0
ONOFF
CH-2
+48V +4dBu_60 0
INPUT OUTPUT
ON
1
2(SUPER)
OFF
75Z
2/4
MONITOR OUTPUT
R L
1
9 !/ != ![ !\!]!-
2 3 4 6 875
〈 Connector panel 〉
1-3. Connector Input/Output signals

1-4 DNW-A220
DNW-A220P
Output connectors
4VIDEO OUTPUT 1 BNC x1
Analog composite video 1.0 Vp-p, 75 Z, negative sync
5VIDEO OUTPUT 2 BNC x1 (Character superimpose enabled)
Analog composite video 1.0 Vp-p, 75 Z, negative sync
9AUDIO OUTPUT 1/3, 2/4 XLR 3-pin x2
Analog audio 2 channels (CH-1/CH-2 or CH-3/CH-4 selectable by sub LCD
menu)
+4 dBm (standard) (600 Zload), low impedance, balanced
!/ MONITOR OUTPUT R/L XLR 3-pin x2
Analog audio channel (AUDIO OUTPUT enabled by selecting sub LCD menu)
+4 dBm (standard) (600 Zload), low impedance, balanced
!= SDI OUT BNC x2
Component digital (270 Mbit/s) SMPTE 259M/ITU-R BT.656
!] TC OUT BNCx1
Time code 1.0 Vp-p ±3 dB (75 Zload), unbalanced
7DC OUT 4-pin connector x1 (for BVR-3)
DC +12 V (+11 to 17 V), 0.5 A (max)
HEADPHONES JM-60 stereo phone jack
(at the front) Analog audio
up to _20 dBu adjustable (8 Zload), unbalanced
1-3. Connector Input/Output signals

1-5
DNW-A220
DNW-A220P
FemaleMale
(External View) (External View)
(External View)
(External View)
15
96
(External View)
6REMOTE (9P Female)
Pin No. Signal
1 GND
2 RM TX (_)
3 RM RX (_)
4 GND
5 PRIORITY
6 GND
7 RM TX (+)
8 RM RX (+)
9 GND
!\ DC IN (4P Male)
Pin No. Signal
1 GND
2NC
3NC
4 EXT DC
7DC OUT (4P Female)
Pin No. Signal
1 UNREG GND
2NC
3NC
4 UNREG +12 V
1AUDIO INPUT (3P Female)
9AUDIO OUTPUT (3P Male)
!- MONITOR OUTPUT (3P Male)
Pin No. Signal
1 GND
2X
3Y
1-3. Connector Input/Output signals

1-6 DNW-A220
DNW-A220P
12345
(External View)
(External View)
![ AUX (6P Female)
Pin No. Signal
1 COM RX
2 COM TX
3 REG GND
4 CTS
5 RTS
6NC
BATTERY IN (5P)
Pin No. Signal
1 BATT (_)
2 BATT ID DET
3 BATT REM
4 LIGHT CONT
5 BATT (+)
1-3. Connector Input/Output signals

1-7
DNW-A220
DNW-A220P
1-4. Location of Main Parts and Circuit Function
1-4-1. Identifying the Player and Recorder
The unit is a portable editor compliant with the Betacam SX format, and consists of two VTRs.
The VTR on the left (as you face the unit) is provided with analog playback heads for Betacam/Betacam
SP, in addition to digital recording and playback heads for Betacam SX. The VTR on the right is provid-
ed with digital recording and playback heads for Betacam SX.
In the maintenance manuals, the VTR on the left is called “Player” (or PLAYER), and the VTR on the
right is called “Recorder” (or RECORDER) for explanation purposes, only when the need for
distinguishing one from the other comes about.
Both VTRs are almost the same in appearance and circuit configurations. Therefore, it is difficult to
identify the VTRs when they are separated and their bottom plate and upper frame are removed.
The following outline the differences in the appearance and functions of the recorder and player.
Player side
Recorder side
MODEL DNW-A220
DIGITAL VIDEOCASSETTE RECORDER
DC 12V 60W
NO.
Sony Corporation
Made in Japan
L
KY-406
JOG/SHUTTLE dial
Identification label
DM-114/114P
. JOG/SHUTTLE dial on the left (on the KY-406 board)
Functions
.Recording and playback in the Betacam SX format
enabled
.Also only playback in the Betacam/Betacam SP
format enabled (DM-114/114P board)
L (left) indication
Serial number: 50000 range
Appearance
. Identification label and serial number
MODEL DNW-A220
DIGITAL VIDEOCASSETTE RECORDER
DC 12V 60W
NO.
Sony Corporation
Made in Japan
R
KY-400
JOG/SHUTTLE dial
Identification label
. JOG/SHUTTLE dial on the right (on the KY-400 board)
Functions
.Recording and playback in the Betacam SX format
enabled
Appearance
. Identification label and serial number
R (right) indication
Serial number: 30000 range
1-4. Location of Main Parts and Circuit Function

1-8 DNW-A220
DNW-A220P
1-4-2. Function and Location of Printed Circuit Boards
1
2
3
4
5
6
7
8
9
!/
!.**
!,*
!\
!]*
!=
!-
![
@\
@/
@=
@-
@[
@]
!;
!'
#/
#-
@,
@'
#[
@.
@;
#=
*: only for player
** : only for recorder
1-4. Location of Main Parts and Circuit Function

1-9
DNW-A220
DNW-A220P
System Board Circuit Function Fig.
Digital processing DPR-87 Digital data processor 8
Video BRR*encoder/decoder, ECC** encoder/decoder(Outer error correction)
SDI-23 4:2:2 component serial digital interface 5
Video processing VPR-34 Video signal processor 7
Video process D-A, Composite encoder
DEC-97 Analog composite decoder 4
Analog Betacam DM-114 (for DNW-A220) RF demodulator for analog Betacam PB, TBC*** !]
video PB processing DM-114P (for DNW-A220P)
(only for player)
Audio processing APR-27 Audio signal processor 3
AU-249 Audio A-D (Analog CH1/2 input), Audio D-A (Analog CH1/2 output) 2
AU-249A (for Recorder) Audio D-A (Monitor output)
PA-218 Head amplifier for analog Betacam PB !=
RF processing EQ-72 RF equalizer !-
REC current control, PB EQ, Analog Betacam PB buffer
Inner error correction
Timing generator TG-191 (for DNW-A220) Reference timing signal and clock generator 6
TG-191P (for DNW-A220P)
System control SY-259/259A System control (SYS1) !/
SY-260 System control (SYS2) 9
Motor driver/sensor SV-194 Servo control, Motor driver, Sensors ![
SR-65 S tension sensor !'
Control panel KY-400 Control panel function for recorder !.
KY-406 Control panel function for player !,
display panel DP-264/264A display panel control for sub LCD @/
DP-265/265A display panel control for color LCD @[
DP-277 Audio meter LCD @\
CN-1541 Interconnection board @=
(interconnecting between color LCD and DP-265/265A board)
CN-1657/1657A Interconnection board @-
(interconnecting between sub LCD and DP-264/264A board)
Inverter Inverter for color LCD @]
Connector panel CP-316 Connector board (AUDIO input/output, MONITOR output) #/
CP-317 Connector board @.
(VIDEO input/output, REF input, TC input/output, REMOTE)
DC-97 DC IN connector board @,
Power RE-150 Switching regulator @;
RE-158 Breaker @'
Others MB-757 Mother board 1
CN-1535/1535A Interconnection board #[
(mainly interconnecting between upper frame and MB-757 board)
CN-1662 Interconnection board #-
(interconnecting between FL-251 and RE-150/CN-1535/1535A boards)
FL-251 Battery terminal board #=
HP-88 Headphones jack !\
PSW-63 Power switch !;
*BRR: Bit Rate Reduction **ECC: Error Correction Coding ***TBC: Time Base Corrector
1-4. Location of Main Parts and Circuit Function

1-10 DNW-A220
DNW-A220P
1-4-3. Location of Main Mechanical Parts
1-4. Location of Main Parts and Circuit Function
4
6
9
!/
1
!,!.@/
@-
@=
@[
@]
@\
@;
@'
2
7
8
!-
![
!]
!\
!;
!'
!=
35

1-11
DNW-A220
DNW-A220P
Index
1Drum assembly
2Blush
3Slip ring
4Video head cleaner
5Threading motor
6TC erase head
7AT head
8Manual eject knob
9Capstan motor
!/ Pinch roller
!- T drawer arm
!= T slider
![ T tension regulator arm
!] Tension regulator band
!\ Timing belt (reel)
!; T reel table
!' T soft brake
!, Gear
!. S reel motor
@/ S reel table
@- Brake solenoid
@= S main brake
@[ S tension regulator arm
@] S slider
@\ Full erase head
@; Tape cleaner
@' CTL head
1-4. Location of Main Parts and Circuit Function

1-12 DNW-A220
DNW-A220P
1-4-4. Function and Location of Sensors
1-4. Location of Main Parts and Circuit Function
!=
!-
!/
9
7
85
8
6
8
1
2
3
4