Panasonic Digital Video Cassette Recorder Ajd455 Operating Instructions

41
Superimpose screen
The superimposed displays appear as shown below. The control signal, time code, etc. are
indicated by abbreviations.
TCR  :::
CTL (control signal) 
TCR (time code playback value)
TCG (time code generator value)
UBR (TC user bit playback value)
UBG (user bit generator value)   
Abbreviation
TV monitor
Characters displayed 
The background of characters superimposed on the display can be changed \
using setup
menu No. 007 (CHARA  TYPE).
TCR  :::
TV monitor
Display position 
The...

42
Servo reference
As the servo reference signal, this unit automatically selects the input video signal selected
by the VIDEO INPUT switch, the reference video signal which is supplied from the REF
VIDEO input connector or the internal sync signal.
When the signal is selected, the unit’s mode and servo reference stand in the relationship
shown in the flowchart presented below.
EXT
1
2
What is the SERVO REF on the setup
menu No. 304 setting?
Is the unit in the recording or editing 
mode?
3Is the REF...

43
Rack mounting
The unit can be mounted into a 19-inch standard rack if the optional rack-mounting adaptors
(AJ-MA75P) are used. For the installation rails, it is recommended that the rail and bracket
for 18 length (model number CC3061-99-0400) of Chassis Trak be used. (The complete
slide rail and bracket unit is not available from Panasonic.) For further details, consult with
your dealer.
1Refer to below for the places where they are to be secured with the screws.
ABCDEFGHAttach the inner members at...

44
Video head cleaning
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.
Condensation
Condensation occurs due to the same principle involved when droplets of water form on a
window pane...

45
Error messages
When a warning occurs in this unit, an error number appears at the counter display.
Opening the DIAG menu will display the error description on the monitor. Also, when an
abnormal operation is detected in this unit, an error number flashes on the counter display.
DIAG menu
This display the VTR information.
VTR information includes “WARNING” information and “HOURS METER” (usage time)
information. A DIAG menu appears on the monitor when the monitor is connected to the
VIDEO OUT 3...

46
Error messages
Displaying the “HOURS METER” information
Press the cursor buttons (, ) to move the cursor (∗).
The number for the item where the cursor is located is shown on the counter display.
Item No. Item Description
H00 OPERATION
H01 DRUM RUN
H02 TAPE RUN
H03 THREADING
H11 DRUM RUN r
H12 TAPE RUN r
H13 THREADING r
H30 POWER ON

The resettable items in the “HOURS METER” information are reset by the service personnel when performing
maintenance or other work.
If T&S&M is selected in the setup menu...

47
Warning
Priority
HighDescription
Low
FAN STOPError No. lights when a fan motor stops operating.
VTR operation
Continued
SERVO NOT LOCKEDError No. lights when servo disturbances continue for 
3 or more seconds during playback, recording or 
editing.Continued
LOW RFError No. lights when envelope levels approx. 1/3 that 
of normal levels are detected for more than 1 sec. 
during playback, recording or editing.Continued
HIGH ERROR RATEError No. lights when the error rate increases and...

48
Connector signals
VIDEO IN
SERIAL IN (DIGITAL) BNC × 2 Active through (Option)
Y,  PB, PR (ANALOG) BNC × 3
VIDEO IN BNC × 2Loop-through, 75Ω termination
switch provided
REF VIDEO IN BNC × 2Loop-through, 75Ω termination
switch provided
S1-VIDEO IN 4-pin × 1
VIDEO OUT
SERIAL OUT(DIGITAL) BNC × 3 (Option)
Y,  PB, PR (ANALOG) BNC × 3
VIDEO OUT BNC × 3
S1-VIDEO OUT 4-pin × 1
AUDIO IN
SERIAL IN (DIGITAL) BNC × 2 Active through (Option)
AUDIO IN (DIGITAL) BNC × 1 CH1/CH2 AES/EBU format
AUDIO IN (ANALOG) XLR...

49
RS-232C REMOTE (25-pin D-SUB straight cable supported)
Pin No. Abbreviation Circuit Description
1 FRAME GROUND Protective ground Frame ground
2 TxD Transmitted data Receives data from the PC.
3 RxD Received data Sends data to the PC.
4 RTS Request to send Shorted with pin 5.
5 CTS Clear to send Shorted with pin 4.
6 DSR Data set readyPositive power output after communication
enable status
7 SG Signal ground Signal ground
20 DTR Data terminal ready No processing
ENCODER REMOTE (15P)
Pin No.SignalPin...

50
Printed circuit board
Printed
circuit
board
F1 board
AUDIO
SW100 Audio Input
Impedance SW
SW101HIGH This sets the CH1 audio input
impedance.
HIGH/600Ω
HIGH Abbr.
nameFull name FunctionFactory
setting
Audio Input
Impedance SWThis sets the CH2 audio input
impedance.
HIGH/600Ω
CAUTION:
These servicing instructions are for use by qualified
service personnel only. To reduce the risk of electric
shock do not perform any servicing other than that
contained in the operating instructions unless you are...