Panasonic Aj Sd755 Operating Instructions Manual

							61
ABCDEF GH
2Attach the outer member brackets to the rack.
Check that the height is the same for the left and
right brackets.
3Remove the four screws at the front for attaching
the left and right side panels.
4Attach the AJ-MA75P rack mount adapter using
the same 4 screws.
1Attach the inner members of the slide rails.
Refer to the figure below for the locations where
the screws are to be attached. The unit can be mounted into a 19-inch standard rack
using the optional rack-mounting adaptors (AJ-
MA75P). For the installation rails, it is recommended
that the 18-inch rail and bracket (model number
CC3061-99-0400) by Chassis Trak be used. (The
complete slide rail and bracket unit is not available
from Panasonic.) 
For further details, consult your dealer.
Rack mounting

OThe length of the screws used is subject to
restriction. (B, G: 10 mm, E: 6 mm)
OAttach the inner members at the same
symmetrical positions on the left (L) side.
OFix the members in place using 3 screws on
each side (total: 6 screws).
OThe letters “A” to “H” are not actually marked on
the side panels.
Inner member Locations where the screws are secured on the right
(R) side of the inner members of the slide rails
Rack-mounting adaptors
5Remove the 4 rubber legs from the bottom of the
unit, and install the unit in the rack.
After the unit has been installed, check that it
moves smoothly along the rails.
Standard rack
Fasten it to the rack with set
screws.

OKeep the temperature inside the rack to between
41°F to 104°F (5°C to 40°C).
OBolt the rack securely to the floor so that it will not
topple over when the VTR is drawn out. 
						

							62
This unit is equipped with an auto head cleaning
function which automatically reduces the amount of
dirt on the video heads. However, in order to
maximize the unit’s reliability, it is recommended that
the video heads be cleaned as and when appropriate.For further details on how to actually clean the heads,
consult with one of our service companies or with your
dealer.
Video head cleaning
Condensation occurs due to the same principle
involved when droplets of water form on a window
pane of a heated room. It occurs when the unit or tape
is moved between places where the temperature or
humidity varies greatly or when, for instance:
OIt is moved to a very humid place full of steam or a
room immediately after it has been heated up.
OIt is suddenly moved from a cold location to a hot or
humid location.When moving the unit to locations such as these,
leave it standing for about 10 minutes rather than
switching on the power immediately.
If condensation occurs in the unit, “E-20” will flash on
the counter display and the cassette will be
automatically ejected.
Leave the unit with the power on until “E-20” is
cleared from the display.
Condensation
Before starting any maintenance work, switch the
power to OFF and, holding the plug, unplug the cord
from the socket.
Use a soft cloth to clean the outside of the unit.
For stubborn dirt or stains, wipe the unit with a cloth
that has been lightly dampened with well-diluted
kitchen detergent and wrung out thoroughly.
After wiping off the dirt with the damp cloth, finish it off
with a dry cloth.
Do not use alcohol, benzene, thinners or any other
solvents as they may affect the color of external parts
or damage the unit’s coating.
Maintenance
Attaching the dust cover
1Insert the end of the cover
under the metal plate on the
inside edge of the top of the
side panel. 2Insert the end of the cover
under the metal plate on the
inside edge of the top of the
front panel.Dust cover 
						

							63
When a warning occurs in this unit, the error number
is indicated on the counter display.
Open the DIAG menu to display a description of the
error on the counter display or monitor TV.
When a operational malfunction has occurred in the
unit, the error number flashes on the counter display.
DIAG menu
This display the VTR information.
VTR information includes “WARNING” information,
“HOURS METER” (usage time) information and
“UMID (Unique Material Identifier)” information. A
DIAG menu appears on the monitor when the monitor
is connected to the VIDEO OUT 3 connector on the
connector section.

By installing the SDI board (AJ-YA755G, available as
an optional accessory) in the VTR, it is also possible
to display the DIAG menu on a TV monitor which has
been connected to the SDI OUT 3 connector.
$Displaying the DIAG menu
Error messages
1Press the DIAG button.
The DIAG menu screen is displayed on the
monitor, and the message is displayed on the
counter display.
2Each time the search button is pressed, the display
changes as follows: “WARNING” 5“HOURS
METER” 5“UMID INFO” 5and so on.
3Press the DIAG button again to return to the
original display.
$“WARNING” information display
OA warning message is displayed whenever a
warning occurs.
When warnings have not been detected, “NO
WARNING” is displayed.
OWhen multiple warning occur, the descriptions for
each warning can be checked by turning the search
dial.
ON
OFFPOWERDVDVCPRO
METER
L
R FULL/FINE
MONITOR SELECT
HEADPHONESMONITOR MIXINPUT SELECTPREVIEW/PREVIEWAUTO EDITPREROLLVIDEOCH1
REC
AUDIOCH2 CH1 CH2TCPRESETMENU SET DIAGSUPER REC INHINT TCGMODECONTROLON
OFFUNITY
VA RPB
COUNTERRESET
A  IN
TRIM
SET
OUT IN
A  OUTCH2 CH1INSERTASSEMVIDEO CUE TCSTAND BY
EDIT
REW STOPPLAY REC PLAYER
RECORDER
FF
JOGSHTLSLOW
TAPE
EEONREGENPRESETEXITOFFREMOTELOCAL
1/3
2 
						

							64
H04
F LOADINGDisplays the number of times front loading has
been performed in single units.
$Displaying the “HOURS METER”
information
Turn the search dial to move the cursor (2). 
The description for the item where the cursor is
located is shown on the counter display.If “T&S&M” is selected in the setup menu No. 008
(DISPLAY SEL), a message appears in the mode
display whenever a warning or error occurs. When
multiple events occur, the event with the highest
priority is displayed.

OThe resettable items in the “HOURS METER”
information are reset by the shop when performing
maintenance or other work.
OThe search buttons and the search dial cannot be
operated while the DIAG menu is displayed.
Error messages
No./Item Description
Ser
222222222
Displays the unit’s serial No.
Priority Display/Description
High
LowError messages (See error message table)
When an operational malfunction has occurred in
the unit, the error number flashes and the error
message is indicated on the counter display.
INT SG
When SG has been selected as the input signal with
the INPUT SELECT buttons, pressing the REC
button or the EDIT button (E-E mode) will display
“INT SG” for the first two seconds.
This is also displayed for the first two seconds when
starting editing.
NO INPUT
If there is no input signal (except for analog audio) to
the connector selected using the INPUT SELECT
buttons, pressing the REC button or the EDIT button
(E-E mode) will display “NO INPUT” for the first two
seconds. 
This is also displayed for the first two seconds when
starting editing.
Warning messages (See error message table)
When a warning occurs in this unit, the error number
and warning message are indicated on the counter
display.
When multiple warnings occur, the warning with the
highest priority is displayed. H00
OPERATIONDisplays the time that the power has been
supplied in one-hour units.
H01
DRUM RUNDisplays the time that the drum has been
rotating in one-hour units.
H02
TAPE RUNDisplays the time that the tape has been running
during FF, REW, PLAY, SEARCH (JOG, SLOW,
SHTL), REC, and EDIT modes (except for STILL
in the JOG, SLOW or SHTL mode) in one-hour
units.
H03
THREADINGThe number of times for threading (loading)/
unthreading (unloading) is displayed in single
units.
H11
DRUM RUNrDisplays the time that the drum has been
rotating in one-hour units. (Can be reset)
H13
THREADINGrThe number of times for threading (loading)/
unthreading (unloading) is displayed in single
units. (Can be reset)
H30
POWER ONThe number of times the power has been turned
on is displayed in single units. H12
TAPE RUNrDisplays the time that the tape has been running
during FF, REW, PLAY, SEARCH (JOG, SLOW,
SHTL), REC, and EDIT modes (except for STILL
in the JOG, SLOW or SHTL mode) in one-hour
units. (Can be reset)
H14
F LOADINGrDisplays the number of times front loading has
been performed in single units.
(Can be reset)
$UMID information display
This is displayed when UMID information is present
on the input signal in E-E mode.
This lamp lights during tape playback when UMID
information has been recorded on the tape.
“NO-INFO” is displayed when there is no UMID
information.
Item Display/Description
MATNOMaterial number
COPYInstance number (No. of copies)
OWNRCountry, organization, user
POSReception status from GPS satellites when
recording spatial coordinates (height above sea
level, longitude and latitude):
HOLD: No reception from any satellite
2D: Reception possible, but number of
satellites is insufficient. Height above
sea level will not be accurate.
3D: Good reception
DTAEDate
TIMEUTC (Coordinated Universal Time) and time
difference with UTC 
						

							65
Warning messages
Error messages
PriorityOMonitor display
ODescription
OVTR operation and corrective action
HighE-04 (UNKNOWN SIG)
This appears when the SDTI input signals are not
DVCPRO or DV format signals. (The data stream
format complies with the SMPTE 321M standard.)
VTR:No recording operations can be performed.
OCheck whether the SDTI input has been
connected properly.
(This warning is displayed when SDI signals are
being input.)
PriorityOMonitor display
ODescription
OVTR operation and corrective action
Low
E-01 (LOW RF)
This appears when envelope levels approximately
1/3 that of normal levels are detected for more than
one second during playback, recording, or editing.
VTR:Operation continues.
OClean the video heads.
E-02 (HIGH ERROR RATE)
This appears when the error rate has increased to
the extent that correction or interpolation was
performed on either the video or audio signals.
VTR:Operation continues.
OClean the video heads. E-11 (NOT 1a25M SIG)
This appears when the SDTI input signals are not
DVCPRO (25 Mbps) format 1atransfer signals.
VTR:No recording operations can be performed.
OCheck the SDTI input signals.
E-00 (SERVO NOT LOCKED)
This appears when the servo is not locked for three
or more seconds during playback, recording, or
editing.
VTR:Operation continues.
OCheck the tape.
A tape recorded other than NTSC format may
have been inserted.
E-16 (INVALID VIDEO SIG)
This appears when the compressed video signals in
the SDTI input signals are invalid.
OThis warning appears only during recording
operations.  In cases like this, no signals are
recorded on the tape and only the erasure of the
existing signals will be performed.
VTR:Operation continues.
No editing operations can be performed.
OCheck the SDTI input signals.
Playback signals of tape on which material has
not been recorded may be being input.
E-17 (INVALID AUDIO SIG)
This appears when the audio signals in the SDTI
input signals are invalid.
OThis warning appears only during recording
operations.  In cases like this, the signals are
recorded with the audio signals muted.
VTR:Operation continues.
No editing operations can be performed.
OCheck the SDTI input signals.
Signals from other than a VTR with 1aplayback
may be being input.
E-18 (INVALID TC SIG)
This appears when the time codes in the SDTI input
signals are invalid.
OThis warning appears only during recording
operations.  In cases like this, the internally
generated time codes are recorded.
VTR:Operation continues.
No editing operations can be performed.
OCheck the time code being input from the
components.
E-10 (FAN STOP)
This is displayed when the fan motor stops.
VTR:Operation continues.
OCheck that nothing is obstructing the fan
movement.
E-09 (NO RF)
This appears during playback when a blank section
(tape blank) lasting for one or more seconds has
been detected.
Such a section is identified as a tape blank when all
of the following conditions are met.
ONo head outputs
ONo playback data readout
ONo CTL (Excluding DV and DVCAM tapes)
VTR:Operation continues.
OCheck the tape.
A tape on which material has not been recorded
may have been inserted. 
						

							66
Error messages
Error messages
E-55
UNLOAD
ERRORIf the tape has not been taken up during
unloading, this error number flashes on the
display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-53
WINDUP
ERRORIf there is an abnormally large discrepancy
between the amount of tape taken up by the
take-up reel and the amount of tape supplied by
the supply reel while the tape is traveling after
the total amount of the tape begins to be
detected, this error number flashes on the
display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-52
W-UP REEL
NOT ROTAIf the take-up reel fails to take up the tape while
the tape is traveling in the state where the total
amount of the tape has not yet been detected
after the cassette was inserted, this error
number flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-38
SERVO FG
ERRORIf automatic adjustment of the reel and capstan
rotation in eject status was not performed
correctly when the power was turned on, this
error number flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again. DisplayODescription
OVTR operation and corrective action
E-29
FRONT LOAD
MOTORThe unit switches to eject mode and if the
cassette fails to move up within 6 seconds, this
error number flashes on the display.
OIf the cassette does not move down inside the
machine even when 6 seconds have elapsed
since the cassette was inserted, the VTR is
transferred to the eject mode.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again. E-20
DEWIf condensation is detected, the error number
flashes and the unit transfers to eject mode. The
drum rotates after the cassette is ejected to
eliminate the condensation.
Once the unit is released from condensation
status, the error message display is cleared and
the VTR is able to be used.
OIf condensation is detected in the eject mode,
the drum starts rotating as soon as it is
detected.
OIf condensation is detected when the cassette
has been inserted, the drum rotation is
stopped, and after the tape is ejected, the
drum starts rotating.
VTR:EJECT
OLeave the power on and wait.
DisplayODescription
OVTR operation and corrective action
E-31
LOADING
MOTORIf the unloading operation is not completed
within 6 seconds, this error number flashes on
the display.
OWhen the loading operation is not completed
within 6 seconds, the VTR is transferred to the
eject (unloading) mode.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-37
SERVO COMM
ERRORIf 10 seconds or more elapses and the servo
microcomputer has not followed orders issued
by the system control microcomputer, this error
number flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-35
SERVO
CONTROL
ERRORIf there is no response from the servo
microcomputer for 1 second or more, this error
number flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-57
S-FF/REW
TIMEOVERIf the start or end processing operation is not
completed, this error number flashes on the
display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-51
FRONT LOAD
ERRORIf the take-up reel rotates without engaging for a
specific period of time during the start or end
processing operation while loading is underway
(half position), this error number flashes on the
display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-60
DRUM ROTA
TOO FASTIf the cylinder motor speed is abnormally high,
this error number flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-59
DRUM ROTA
TOO SLOWIf the cylinder motor speed is abnormally low,
this error number flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-61
CAP ROTA
TOO SLOWIf the capstan motor speed is abnormally low,
the error number flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again. 
						

							67
Error messages
Error messages
DisplayODescription
OVTR operation and corrective action
E-78
M-IF COMM
ERRORIf a problem has been encountered in
communication between the servo
microcomputer and mechanism relay board, this
error number flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again. E-67
T REEL ROTA
TOO FASTIf the take-up reel motor speed is abnormally
high, the error number flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again. E-64
S REEL ROTA
TOO FASTIf the supply reel motor speed is abnormally
high, the error number flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-69
T REEL
TORQUE ERRIf excess torque being applied to the take-up
reel motor is detected, the error number flashes
on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-70
S REEL
TORQUE ERRIf excess torque being applied to the supply reel
motor is detected or an abnormal current flowing
to the current detection resistor is detected, this
error number flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-71
CAP TENSION
ERRORIf abnormal tension at the supply side is
detected in the capstan mode, the error number
flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-72
REEL
TENSION
ERRORIf abnormal tension at the supply side is
detected in the reel mode, the error number
flashes on the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-73
REEL DIR
UNMATCHIf the take-up reel motor has rotated in the
reverse direction, this error number flashes on
the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
E-74
DRUM
TORQUE
ERRORIf excess torque being applied to the cylinder
motor is detected, this error number flashes on
the display.
VTR:STOP
OSet the POWER switch to OFF and then to
ON again.
Consult your dealer if the error message is still
displayed even after restarting the unit. 
						

							68
The VTR can be operated by commands when the
RS-232C interface is used.
(See command table on pages 71, 72.)
$Conditions for acknowledging
commands from RS-232C interface
OThe front panel CONTROL switch must be at
REMOTE.
OThe setup menu No. 204 “RS232C SEL” must be
ON.
If the above conditions are not met, [ACK] + [STX]
ER001 [EXT] is returned to the external unit.
Whether the [ACK] code is returned depends on the
setting which has been selected for setup menu
item No. 209 “RETURN ACK”.
Hardware specifications
External interface specifications
RS-232C interface
OConnector specifications
Connector:
D-SUB 25-pin (crossover cable supported)
OExample of connection with controller (PC)
Using crossover cable with D-SUB 25-pin
connectors
Pin No. Signal Description
1FG Protective ground
(Frame ground)
2RXD Received data
(Data is sent to PC.)
3TXD Transmitted data
(Data is received from PC.)
4CTS Clear to send
(Shorted with pin 5.)
5RTS Request to send
(Shorted with pin 4.)
6DTR Data terminal ready
(No processing)
7SG Signal ground
(Signal ground)
20DSR Data set ready (+ voltage output after
communication enable status)
PC side
(D-SUB 25-pin connector)VTR side
FG
TXD
RXD
RTS
CTS
DSR
SG
DTR1
2
3
4
5
6
7
20FG
RXD
TXD
CTS
RTS
DTR
SG
DSR 1
2
3
4
5
6
7
20
Using crossover cable with D-SUB 9-pin and 25-pin
connectors
PC side
(D-SUB 9-pin connector)VTR side
RXD
TXD
DTR
SG
DSR
RTS
CTS2
3
4
5
6
7
8FG
RXD
TXD
CTS
RTS
DTR
SG
DSR 1
2
3
4
5
6
7
20 
						

							69
Software specifications (Protocol)
1. Communication parameters
RS-232C interface
Communication
systemAsynchronous, full duplex
Communication
speed300/600/1200/2400/4800/9600
Bit length7bit/8 bit
Stop bit1 bit/2 bit
Parity bitNONE/ODD/EVEN
ACK codeACK code returned/ACK code not returned

The ACK code is what is returned from the
VTR to the controller when data has been
successfully sent from the controller.
The underlining indicates the factory settings.
Communication
parameterSetup menu item
Communication
speedNo.205 BAUD RATE
Bit lengthNo.206 DATA LENGTH
Stop bitNo.207 STOP BIT
Parity bitNo.208 PARITY
ACK codeNo.209 RETURN ACK
Any changes to the settings can be made using the
setup menu items listed below.
2. Send format
[controller (PC) 5VTR]
$Data format
[STX] [command] [:] [data] [ETX]
02h XX XX XX 3Ah XX.....
XX 03h
20H
						

							70
RS-232C interface
3. Return format
[VTR 5controller (PC)]
The following responses are made to the command. If
necessary, more than one response is made.
$When the communication has terminated
normally
1. The receive completion message is returned.
[ACK]
06h
2. The execution completion message is returned.
[STX] [command] [data] [ETX]
02h XX XX XX XX.....
XX 03h
[command] :
This is the message (data) which is returned or
the execution completion message identifier.
[data] :
This is the data to be returned. It can be omitted.
Example:
Send command
Return message (data)
[STX] OPL [ETX]5[ACK] [STX] OPL [ETX]
$When the communication has terminated
abnormally
[NACK]
15h
$When processing is not possible due to
incorrect data or trouble in the VTR
1. The receive completion message is returned.
[ACK]
06h
2. An error code is returned.
[STX] [E R N
1N2N3] [ETX]
02hError code03h
4. Error code table
ER001 :Invalid command
OUnsupported command received.
OError in command execution
ER002 :Parameter error
ER102 :VTR mode error (front loading motor)
ER103 :VTR mode error (loading motor)
ER104 :VTR mode error (drum, capstan system)
ER105 :VTR mode error (reel system)
ER106 :VTR mode error (tension system)
ER108 :VTR dew error
ER1FF :VTR system error