Sony Betacam SX DNW-A22 User manual

DIGITAL VIDEOCASSETTE PLAYER
DNW-A22/A22P
MAINTENANCE MANUAL Part 1
1st Edition (Revised 5)
Serial No. 10001 and Higher: DNW-A22
Serial No. 10001 and Higher: DNW-A22P

DNW-A22/A22P
!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.
n
This unit uses an IC that contains a lithium battery.
Attention-when the product is installed in Rack:
1. Prevention against overloading of branch circuit
When this product is installed in a rack and is
supplied power from an outlet on the rack, please
make sure that the rack does not overload the supply
circuit.
2. Providing protective earth
When this product is installed in a rack and is
supplied power from an outlet on the rack, please
confirm that the outlet is provided with a suitable
protective earth connection.
3. Internal air ambient temperature of the rack
When this product is installed in a rack, please make
sure that the internal air ambient temperature of the
rack is within the specified limit of this product.
4. Prevention against achieving hazardous
condition due to uneven mechanical loading
When this product is installed in a rack, please make
sure that the rack does not achieve hazardous
condition due to uneven mechanical loading.

1
DNW-A22/A22P
Manual Structure
Purpose of this manual .............................................................................................. 5
Contents ..................................................................................................................... 5
Related manuals......................................................................................................... 6
1. Installation
1-1. Installation Procedure..................................................................................1-1
1-2. Supplied Accessories ..................................................................................1-1
1-3. Operating Conditions ..................................................................................1-2
1-4. Power Supply ..............................................................................................1-2
1-4-1. Voltage and Power Requirements ..............................................1-2
1-4-2. Power Cord.................................................................................1-2
1-5. Installation Space ........................................................................................1-3
1-6. Rack Mounting............................................................................................1-4
1-7. Matching Connectors and Cables................................................................1-9
1-8. Signal Inputs and Outputs .........................................................................1-10
1-9. Switch and Shorting Plug Setting on PC Boards ......................................1-12
1-9-1. APR-12 Board ..........................................................................1-12
1-9-2. DM-89 Board ...........................................................................1-14
1-9-3. TBC-23 Board ..........................................................................1-15
1-9-4. SS-63 Board .............................................................................1-16
1-10. Switching Search Dial Mode ....................................................................1-18
2. Service Overview
2-1. Notes on Power Supply Block ....................................................................2-1
2-1-1. Warning on Primary Circuit Block and Electric Shock .............2-1
2-1-2. Note on Resetting the Circuit Breaker .......................................2-1
2-2. Cleaning when the Heads are Clogged .......................................................2-1
2-3. Removing/Reattaching Cabinet ..................................................................2-2
2-3-1. Upper Lid, Side Panels, and Bottom Plate .................................2-2
2-3-2. Control Panels ............................................................................2-3
2-3-3. Connector Panel Assembly ........................................................2-4
2-3-4. Power Supply Panel Assembly ..................................................2-5
2-4. Removing/Reattaching Plate MD Assembly ..............................................2-5
2-5. Removing/Reattaching Cassette Compartment...........................................2-6
2-6. Removing/Reattaching Lower Control Panel Assembly ............................2-7
2-7. Circuit Function ..........................................................................................2-8
2-8. Location of Main Parts..............................................................................2-10
2-8-1. Printed Circuit Boards and Power Supply Unit Location ........2-10
2-8-2. Main Mechanical Parts Location .............................................2-13
Table of Contents

2DNW-A22/A22P
2-9. Function and Location of Sensors .............................................................2-14
2-10. System of Cassette ....................................................................................2-16
2-11. Function of LEDs on Circuit Boards ........................................................2-18
2-12. Taking Out the Cassette in Tape Slacking ................................................2-20
2-13. Pulling out/Insertion of Plug-in Board ......................................................2-21
2-14. Fixtures and Adjustment Equipment List .................................................2-22
2-14-1. Fixtures.....................................................................................2-22
2-14-2. Equipment for Adjustment .......................................................2-23
2-15. ISR.............................................................................................................2-25
2-15-1. Overview ..................................................................................2-25
2-15-2. Information of Connecting Cable.............................................2-26
2-16. Setup Menu (F-series) ...............................................................................2-28
2-16-1. Menu Operation .......................................................................2-28
2-16-2. F-Series Items...........................................................................2-29
3. Error Message
3-1. Overview of Error Message ........................................................................3-1
3-2. Details of Error Messages ...........................................................................3-3
4. Maintenance Mode
4-1. Overview of Maintenance Mode.................................................................4-1
4-2. TAPE Maintenance Mode (M0)..................................................................4-6
4-2-1. Overviews ..................................................................................4-6
4-2-2. SERVO CHECK Mode (C0) ...................................................4-12
4-2-3. RF CHECK Mode (C1) ............................................................4-27
4-2-4. BETACAM PB CHECK Mode (C3) .......................................4-30
4-2-5. OTHERS CHECK Mode (C4) .................................................4-32
4-2-6. SERVO ADJUST Mode (A0) ..................................................4-36
4-2-7. RF ADJUST Mode (A1) ..........................................................4-43
4-2-8. AUDIO/VIDEO ADJUST Mode (A2).....................................4-51
4-2-9. BETACAM PB ADJUST Mode (A3)......................................4-53
4-3. Error Logger Display Mode (M2) .............................................................4-56
4-3-1. Outline ......................................................................................4-56
4-3-2. Display Mode ...........................................................................4-57
4-3-3. Setting Mode ............................................................................4-59

3
DNW-A22/A22P
5. Periodic Maintenance and Inspection
5-1. Periodic Maintenance..................................................................................5-1
5-1-1. Index...........................................................................................5-1
5-1-2. Periodic Replacement and Check Item Table ............................5-2
5-1-3. Hours Meter ...............................................................................5-4
5-2. Cleaning ......................................................................................................5-5
5-2-1. Cleaning using Cleaning Tape ...................................................5-5
5-2-2. General Information for Cleaning using Cleaning Cloth ...........5-5
5-2-3. Tape Running Surface of Upper Drum
and Video Heads Cleaning.........................................................5-7
5-2-4. Tape Running Surface of Lower Drum
and Lead Surface Cleaning ........................................................5-8
5-2-5. Stationary Heads Cleaning .........................................................5-9
5-2-6. Tape Running System and Tape Cleaner Cleaning..................5-10
5-2-7. Fan Motors Cleaning................................................................5-11
5-2-8. Cassette Compartment and Cassette Supports Cleaning..........5-12
5-3. Video Head Tip Protrusion Check ............................................................5-13
5-3-1. Head Tip Protrusion Measurement ..........................................5-13
5-3-2. Brush Slip Ring Assembly Removal/Reinstallation ................5-16
6. Replacement of Plug-in Boards
6-1. Service Overview for Plug-in Board Replacement.....................................6-1
6-1-1. Notes on Plug-in Board Replacement ........................................6-1
6-1-2. Service Action before/after Plug-in Board Replacement...........6-2
6-1-3. Plug-in Board Pulling out/Insertion ...........................................6-3
6-1-4. Equipment List ...........................................................................6-4
6-1-5. Content of Alignment Tapes ......................................................6-6
6-2. APR-12 Board Replacement .......................................................................6-9
6-2-1. Replacement Procedure..............................................................6-9
6-2-2. Electrical Adjustments .............................................................6-10
6-3. DM-89 Board Replacement ......................................................................6-19
6-3-1. Replacement Procedure............................................................6-19
6-3-2. Electrical Adjustments .............................................................6-20
6-4. EQ-56 Board Replacement .......................................................................6-68
6-4-1. Replacement Procedure............................................................6-68
6-4-2. Electrical Adjustments .............................................................6-69
6-5. SS-63 Board Replacement ........................................................................6-75
6-5-1. Setting of DIP Switches ...........................................................6-75
6-5-2. Error Logging Data Clear and Calendar/Clock Setting ...........6-76
6-6. TBC-23 Board Replacement .....................................................................6-78
6-6-1. Replacement Procedure............................................................6-78
6-6-2. Electrical Adjustments .............................................................6-79

4DNW-A22/A22P
6-7. TBC-24 Board Replacement .....................................................................6-87
6-7-1. Replacement Procedure ............................................................6-88
6-7-2. Electrical Adjustments .............................................................6-89
6-8. VPR-17 Board Replacement ...................................................................6-106
6-8-1. Replacement Procedure ..........................................................6-106
6-8-2. Electrical Adjustments ...........................................................6-107
7. Spare Parts
7-1. Notes on Repair Parts ..................................................................................7-1
7-2. Exploded Views ..........................................................................................7-2
7-3. Plug-in Boards.............................................................................................7-4
7-4. Packing Materials and Supplied Accessories..............................................7-5
7-5. Fixtures List ................................................................................................7-5
Appendix A Setting Check Sheet
Appendix B Block Diagrams
INDEX................................................................................................................... B-1
OVERALL (1/2).................................................................................................... B-1
OVERALL (2/2).................................................................................................... B-2

5
DNW-A22/A22P
Purpose of this manual This manual is the maintenance manual part1 of the digital videocassette player
DNW-A22/A22P.
This manual is intended for use by trained system and service engineers, and
provides the information that is required to install, maintenance information, and the
information for service such as replacement of plug-in boards.
Contents This manual is organized by following sections.
Section 1 Installation
Explains the information that is required to install (environment, connection infor-
mation, initial setting, etc.).
Section 2 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.), the
measures against trouble and ISR (Interactive Status Reporting).
Section 3 Error Message
Explains the error messages.
Section 4 Maintenance Mode
Explains each menu of the maintenance mode.
Section 5 Periodic Maintenance and Inspection
Explains the recommended periodic maintenance, the cleaning procedure, and the
video head tip protrusion check procedure.
Section 6 Replacement of Plug-in Boards
Explains how to replace the plug-in board and how to adjust and check after replace-
ment.
Section 7 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.
Appendix A Setting Check Sheet
The sheet is used for checking the setup conditions such as switch, setup menu
under the application.
Appendix B Block Diagrams
Describes the overall block diagrams
Manual Structure

6DNW-A22/A22P
Related manuals Besides this “maintenance manual part 1”, the following manuals are available for
digital videocassette player DNW-A22/A22P.
If these manuals are required, please contact your local Sony Sales Office/Service
Center.
• Operation Manual (Supplied with this unit.)
This manual is necessary for application and operation (and installation) of this unit.
• Maintenance Manual Part 2 (Available on request)
Volume 1: Service Instruction
Volume 2: Parts List
Volume 3: Diagrams
These manuals describe the information that premises the parts level service
(adjustments, board layouts, schematic diagrams, detailed parts list, etc.) for this
unit.
• ISR Protocol Manual (Available on request)
This manual explains the ISR function (Interactive Status Reporting / Integrated
Equipment Management Function).

1-1
DNW-A22/A22P
1-2. Supplied Accessories
Screws for rack mounting (PSW 4 x 16) ..........................4
Operation manual ..............................................................1
Maintenance manual (Part 1).............................................1
1-1. Installation Procedure
Installation procedure of this unit is shown on the follow-
ing flowchart.
Refer to each section about detail of each flow.
The operation manual is also required to do *- marked
items.
Section 1
Installation
1-3. Operating Conditions
1-4. Power Supply
1-5. Installation Space
1-6. Rack Mounting
1-7. Matching Connectors and Cables
1-8. Signal Inputs and Outputs
1-9. Switch and Shorting Plug Settings on PC Boards
1-10. Switching Search Dial Mode
Start
Determination of
installation place
Unpacking
Rack mounting
*Connection
*Initial setup
*Operation check
End
n
If an error message appears on the time data display area, refer to “Section 3. Error Message”.
n
When the unit is transported, it is required to pack the unit into the specified packing materials.

1-2 DNW-A22/A22P
1-3. Operating Conditions
1-4. Power Supply
1-4-2. Power Cord
This unit does not come with a power cord.
To get a power cord, please contact your local Sony Sales
Office/Service Center.
w
Use the specified power cord only when connecting the
AC power.
Never use a injured power cord.
For customers in the U.S.A. and Canada:
1Power cord 125 V 10 A (2.4 m) : !1-557-377-11
2Plug holder (Brown) : 3-613-640-01
For customers in the United Kingdom:
1Power cord 250 V 10 A (2.4 m) : !1-782-165-11
2Plug holder (Brown) : 3-613-640-01
For customers in European countries except the United
Kingdom:
1Power cord 250 V 10 A (2.4 m) : !1-782-164-11
2Plug holder (Brown) : 3-613-640-01
If the unit is used in the area except above, please contact
your local Sony Sales Office/Service Center.
1-3. Operating Conditions
c
Good air circulation is essential to prevent internal heat
build-up. Place the unit in location with sufficient air
circulation.
Do not block the ventilation holes of the cabinet and the
front and rear panels.
Operating temperature:5dC to 40dC
Operating humidity: 25% to 80% (non-condensing)
Storage temperature: _20dC to 60dC
Locations to avoid:
.Areas where the unit will be exposed to direct sunlight
of any other strong lights.
.Areas near heat sources.
.Dusty areas or areas subject to vibration.
.Areas with strong magnetic field.
.Areas with much electrical noise.
.Areas with much static electricity.
.Areas that is impossible to find a specified room for
installation. (Refer to “1-5. Installation Space”.)
.Areas windtight.
Tilt allowance: Within 30d(Do not slant the front
and rear of the unit more than 30d.)
c
Fix the unit securely to avoid drop when the unit is operat-
ed at not-horizontal place.
1-4. Power Supply
1-4-1. Voltage and Power Requirements
This unit’s power line has a switching regulator.
c
Be sure to operate the unit within the range of following
power voltage.
Power voltage: AC 100 to 240 V ±10%
Power frequency: 50 Hz or 60 Hz
Power consumption: 190 VA
Rush current: Power voltage 100 V IN; 10 A
Power voltage 240 V IN; 20 A
n
AC power supply is required a capacity which is commen-
surate with rush current.
If the capacity of the AC power supply is not enough, the
breaker of AC power of a supply side may operate or this
unit may not operate normally.
AC inlet
2
1
21 AC inlet
21 AC inlet

1-3
DNW-A22/A22P
1-5. Installation Space
Dimensions when Rack-Mounting
nRemove the feet when rack mounting.
Mass : 34 kg
577(Maximum traveling distance)
416(Rail-installed width)
427(Unit width)
Unit : mm
158
104
15.9 12.7
123.8 263.5
457.5
45447.1 18.3
107
(70.6)
1.2
415.9
218
512.8
(454)
(47.1)
45.5
520
481
465
364
427 31.5
36.7
220
148.2
19
When the unit is mounted in the rack, leave a space on the
top or bottom of this unit by 1U.
Moreover, an air flow that is effective in cooling the unit is
essential. If the ventilation is not enough, the unit may be
damaged because of an increase of the internal tempera-
ture.
n
This unit is air-cooled by the four fans. The operation with
the upper lid is removed affects the air cooling by the fans.
Complete the work in a short time as far as possible when
operating the unit for inspection with the upper lid re-
moved. If it takes a long time, blow to the unit by an
electric fan to cool the unit.
1-5. Installation Space
When installing, the installation space must be secured in
consideration of the ventilation and service operation.
.Do not block the ventilation slots (at the upper lid, right
side panel, lower portion of front panel, and bottom
plate), and vents of the fans.
.Leave a space around the unit for ventilation.
.Leave more than 40 centimeters of space in the rear of
the unit to secure the operation area.
When the unit is installed on the desk or the like, leave at
least four centimeters of space in the upper and right sides.
Living 40 centimeters or more of space above the unit is
recommended for the service operation.

1-4 DNW-A22/A22P
1-6. Rack Mounting
1-6. Rack Mounting
Explains how to mount this unit into a 19-inch standard
rack.
Be sure to mount this unit into a rack accurately following
the procedure and notes mentioned below.
c
.Use the specified rack mount rail.
The use of other rail of low-strength may drop the unit
and cause the risk of injury.
.To prevent toppling over the rack, fix it on the horizontal
and firm floor securely with bolts, etc.
.Mounts the unit into a rack with a steady posture.
n
.When other equipment with built-in hard disk drive are
already mounted in the same rack for mounting this unit,
turn off the power of the equipment before mounting this
unit.
.Connect long enough cables on the connector panel,
considering that the unit is pulled out from the rack.
.Do not operate this unit without the upper lid and bottom
plate except when servicing it.
.To reduce an increase in the internal temperature of this
unit, leave a space on the top or bottom of this unit by
1U.
.Adjust the temperature inside the rack within the range
of the unit’s operating temperature.
Specified Rack Mount Kit
RMM-111 (Optional accessory) or
RMM-110 (Optional accessory)
The color of rack angle of RMM-111 fits to the unit.
RMM-110 is the same consistance, strength and dimension
as RMM-111, but the color of rack angle is different.
n
To mount this unit in the FLEXICART, it is recommended
to use the BKFC-53/2.
Parts Packed in RMM-110/111
.Slide rails......................................... 2
.Rack angles (handles) ..................... 2
.Rail brackets.................................... 4
.Plate nuts (large) ............................. 4
.Plate nuts (small)............................. 4
.Screws (PSW4 x 16) ...................... 4
.Screws (B4 x 8) .............................. 8
.Hexagon socket head cap screws .... 8
.Flat washers..................................... 8
.Screws (RK5 x 14) ......................... 2
.Ornamental washers ........................ 2
.L-shaped hexagon wrench............... 1
Rack Mounting Procedure
..
..
.Removing the feet
1. Set the unit with its side panel down.
n
Lend your hand so that the lower handle does not hang
down.
2. Unscrew the four screws to remove the feet from the
bottom plate of the unit.
3. Set the unit in a horizontal position.
n
Keep these screws and the feet.
When operating the unit after demounting it from the rack,
be sure to reattach the feet.
Tightening torque: 98 x10_2N .m {10 kgf .cm}
PS4 x14
PS4 x14
Foot
Foot

1-5
DNW-A22/A22P
1-6. Rack Mounting
.Attaching the rack angles (handles)
8. Remove the four screws from both sides
(left and right) of the unit.
n
Keep these screws (B4 x6).
Be sure to use these screws when directly fixing the
side panels without the rack angles.
The use of longer screws such as the screws (PSW4 x
16) for fixing the rack angles will cause a malfunction
of the unit.
9. Attach the two rack angles to both sides (left and right)
of the unit with the supplied four screws (PSW4 x16).
Tightening torque: 120 x10_2N .m {12.2 kgf .cm}
.Attaching the inner rails
4. Pull the inner rails out from the two intermediate rails.
5. While pressing the stopper of the inner rail in the
direction of the arrow A in the figure, pull the inner
rail out in the direction of the arrow B.
6. Remove the ten screws from both sides (left and right)
of the unit as shown in the figure below.
7. Attach the two inner rails to both sides (left and right)
of unit with the removed screws in the step (6).
Tightening torque: 120 x10_2N .m {12.2 kgf .cm}
n
Be sure to use the (B4 x 6) screws when attaching the
inner rail. The use other-sized screws may cause a
malfunction of the unit.
Outer rail
Intermediate rail
Inner rail
Stopper
A
B
B4 x 6
B4 x 6
B4 x 6
B4 x 6
B4 x6
B4 x6
Inner rail
Inner rail
PSW4 X16
PSW4 x16
PSW4 x16
Rack angle
Rack angle

1-6 DNW-A22/A22P
1-6. Rack Mounting
Rack
50 to 55 mm
Outer rail
Rack angle B4 x8
Rail bracket
.Attaching the outer rails
12. Loosely attach each outer rail to the 2U position from
the bottom of the 5U space in the rack for installing
this unit, with the eight hexagon socket head cap
screws, eight flat washers, and four plate nuts (small).
n
Leave a space on the top or bottom of this unit by 1U
to reduce an increase in the internal temperature of this
unit.
13. As shown in the following figure, adjust each front-
side position of outer rails on both sides (left and right)
so that the distance from the surface of the rack to the
tip of the rail becomes within the range of 50 to 55
milimeters.
14. Fully tighten the eight screws (B4 x 8) fixing the four
rail brackets.
Tightening torque: 120 x10_2N .m {12.2 kgf .cm}
.Loosely attaching the rail brackets
10. Slide the intermediate rail as shown in the figure, and
then loosely attach the rail bracket to the outer rail
with a plate nut (large) and the two screws.
11. Slide the ball retainer in the direction of the arrow,
loosely attach the rail bracket to the outer rail with a
plate nut (large) and the two screws.
Plate nut (large)
Rail bracket
Outer rail
Intermediate rail
B4 x8
Plate nut (large) Rail bracket
Outer rail
Intermediate rail
B4 x8
Ball retainer
Plate nut (small)
Rail
Flat washer
Hexagon socket
head cap screw
L-shaped hexagon wrench
By 5U
2U
Leave a space by 1U
Leave a space by 1U

1-7
DNW-A22/A22P
1-6. Rack Mounting
A'
A
Intermediate rails
Width : A = A' = 416 mm
15. Check that the two intermediate rails attached to the
rack are parallel.
16. To fix the two outer rails to the rack, fully tighten the
eight loosely fitted hexagon socket head cap screws in
step 12 using the L-shaped hexagon wrench.

1-8 DNW-A22/A22P
1-6. Rack Mounting
21. Slide the unit in and out from the rack about three
times and check that the slide rails move smoothly.
If they are not smoothly, demount the unit and go back
to “Attaching the outer rails”(step 12).
c
When demounting the unit, carry it by the two persons
or more.
n
This unit does not have the feet at this operating.
Put down this unit on the floor or other, being careful
not to damage the unit.
22. Secure the unit to the rack with two screws and two
ornamental washers.
Tightening torque: 120 x10_2N .m {12.2 kgf .cm}
.Mounting in rack
c
Be sure to carry the unit by the two persons or more.
17. Slide each ball retainer of intermediate rails on both
sides (left and right) in the direction of the arrow.
18. Pull equal length of each rail on both sides out.
19. Lift the unit holding the handles, slowly insert the
inner rails into the intermediate rails.
20. While pressing each stopper of inner rails on both
sides, slowly push the unit into the rack.
n
Be careful not to catch your finger or hand in rack
mount rail.
Intermediate rail
Ball retainer
Stopper
Stopper
Intermediate rail
Inner rail
RK5 x14
RK5 x14
Ornamental washer
Ornamental washer

1-9
DNW-A22/A22P
1-7. Matching Connectors and Cables
1-7. Matching Connectors and Cables
When external cables are connected to the connector of this unit, the hardware listed below (or the
equivalents) must be used.
Panel indication Matching connector (cable) Sony part No.
VIDEO OUTPUT BNC 75Z, MALE _
MONITOR OUTPUT XLR 3P, FEMALE 1-508-083-00
RS-232C D-SUB 25P, MALE 1-566-356-11
PHONE (Note1 JM-60 stereo phone plug _
RF ADAPTOR RFU adaptor _
AV cable
Note 1: It exists on the front (upper control panel).

1-10 DNW-A22/A22P
1-8. Signal Inputs and Outputs
1-8. Signal Inputs and Outputs
Communication connectors
1RS-232C D-SUB 25P connector (RS-232C interface)
for ISR (Interactive Status Reporting)
Output connectors
2MONITOR OUTPUT XLR 3-pin x2 (1 set : R and L)
Analog audio
+4 dBm (Standard) (600 Zload), low impedance, balanced
3VIDEO OUTPUT, COMPOSITE BNC x2 (including 1 for character superimpose)
Analog composite video 1.0 V p-p, 75 Z, sync negative
4RF ADAPTOR VIDEO : RCA jack, 1.0 V p-p, 75 Z, sync negative (for character superimpose)
DC : 5 V
AUDIO : RCA jack, _10 dBu, high impedance, unbalance
PHONE JM-60 stereo phone jack
(Upper control panel) Analog audio
Up to _12 dBu (8 Z, load), unbalance
COMPOSITE
(SUPER)
VIDEO OUTPUT
1
2
MONITOR OUTPUT
RL
RF ADAPTOR
RS-232C
BREAKER AC IN
3
4
21
VIDEO
DC
AUDIO

1-11
DNW-A22/A22P
RS-232C: 25-pin (female)
Pin No. Signal
1 FG ; Frame Ground
2 TXD ; Transmitted Data (Output)
3 RXD ; Received Data (Input)
4 RTS ; Request to Send (Output)
5 CTS ; Clear to Send (Input)
6 DSR ; Data Set Ready (Input)
7 SG ; Signal Ground
8 DCD ; Data Carrier Detect (Input)
9 to 19 NC
20 DTR ; Data Terminal Ready (Output)
21 to 25 NC
113
25 14
External view
1-8. Signal Inputs and Outputs

1-12 DNW-A22/A22P
1-9. Switch and Shorting Plug Settings on PC Boards
1-9-1. APR-12 Board
HEAD TUNE switches (For Betacam/Betacam SP longitudinal audio playback)
It is not necessary to change the setting of these switches, when installing.
Channel Ref. No. Description
CH1 S500 By coupling with RV500, adjust the CH1 head amp high frequency response. This
switch is used in audio head dumping adjustment. When the unit is shipped, this switch
is set to the position based on the adjustment condition.
CH2 S600 By coupling with RV600, adjust the CH2 head amp high frequency response. This
switch is used in audio head dumping adjustment. When the unit is shipped, this switch
is set to the position based on the adjustment condition.
1-9. Switch and Shorting Plug Settings on PC Boards
APR-12 Board (Side A)
n
Refer to Section 2-13 for remov-
ing/reattaching the plug-in boards.
S600
RV600
RV500
S500
COR201COR101
161820
201816 201816
161820
COR400
COR401
VAR (R)UNITY (R)
RV400
COR402
COR300
COR301
VAR (L)UNITY (L)
RV300
COR302
+4 0
–3
–20
+4 0
–3
–20
1
2
3
4
5
6
7
A
ABCD E F G
A No.
LOTNO, S NO,
APR–12
1-661-132- MADE IN JAPAN
>EP–GW<
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