Panasonic Digital Video Cassette Recorder Ajd850a Operating Instructions

							Ð 81 Ð
Reproducing the time code/user bit1
Place the unit in the stop mode.
2Set the TC/CTL button to TC.
3Set the TC/UB switch to TC or UB. 
TC:The time code is displayed.
UB: The user bit is displayed.
¥ When it is no longer possible to read the time code, it is interpolated \
using the
CTL signal.
4Press the PLAY button. 
Playback now commences, and the time code appears on the display.
When setup menu No. 006 (SUPER) is ON, the time code value is superimp\
osed onto
the video signal from the VIDEO OUT 3 connector.

¥ When the time code signal cannot be read, the time code is automatically\
 interpolated by the CTL signal.
The display appears as shown below.
¥ The colon between the seconds and frames changes to a period when the dr\
op frame time code is read.
00:01:04:07T*R
When the time code signal cannot be read, 
an asterix (
*) is displayed.
The colon between the seconds and frames 
changes to period during drop frame mode. 
						

							Ð 82 Ð
Superimpose screen
The control signals, time code, etc. are displayed using abbreviations.
TCR  :::
CTL  = control signal
TCR = TC time code reading
UBR = TC user bit reading
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 position of the characters superimposed on the display can be changed using setup
menus No. 001 (CHARA H-POS) and No. 002 (CHARA V-POS).
TV monitor TV monitor TCR  
:::
TCR  :::
Operation mode
The VTRÕs operation mode can also be displayed using setup menu No. 003 (DISPLAY SEL).
STOPVTR operation mode
TV monitor TCR  
::: 
						

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Servo reference
This unit automatically selects the input video signal selected by the I\
NPUT switch, the 
reference video signal supplied from the REF VIDEO input connector or th\
e internal sync
signal as the servo reference signal.
When the signal is selected, the unitÕs 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?
3Is the unit in the editing mode?  
(Is VIDEO, CH1, CH2, CUE or TC
selected?)
4Is the REF VIDEO signal supplied?
YESYES
Is the unit in the recording mode?  
AUTO
YES
NO
NO
NO 
NO
YES
Is the input video signal 
available?
The REF VIDEO input 
signal serves as the
reference signal. The internal sync signal
serves as the reference
signal.
The input video signal
serves as the reference
signal. 
						

							Ð 84 Ð
Servo reference setting tables
The servo reference signal is switched as shown in the tables below depending on the servo
reference setting, deck mode and what input signal is available. When the mode is
transferred to editing or recording/playback, the image may be disturbed and the transfer
may be delayed if the references during playback and recording do not match.
n During playback or special playback
SERVO REF
Input signal status
Reference signal
on the setup menu
(servo reference)
No. 304 position VIDEO IN signal REF IN signal
REF IN signal
AUTO
´Internal sync signal
´REF IN signal
´´Internal sync signal
REF IN signal
EXT
´Internal sync signal
´REF IN signal
´´Internal sync signal
n During recording or editing
SERVO REF
Input signal status
Reference signal
on the setup menu
(servo reference)
No. 304 position VIDEO IN signal REF IN signal
VIDEO IN signal
AUTO
´VIDEO IN signal
´REF IN signal
´´Internal sync signal
REF IN signal
EXT
´Internal sync signal
´REF IN signal
´´Internal sync signal
Ò
Ó denotes that the signal is supplied: Ò´Ó denotes that the signal is not supplied. 
						

							Ð 85 Ð
Audio V Fade Function
When editing tapes, the edit point splicing selection (setup menu No. 309 and 310)
information is recorded on the tape. This information is then sensed during playback, and V
fade or cut processing is automatically performed for these sections. [However, only when
the playback fade selection (No. 719) is AUTO.]
When the edit point splicing selection (setup menu No. 309 and 310) is CUT
Audio signal A
Noise appears at the edit splice.Audio signal B
When the edit point splicing selection (setup menu No. 309 and 310) is FADE
Audio signal A Audio signal B
V fade is performed instantaneously to eliminate the noise.

¥ When the playback fade selection (No. 719) is CUT, cut processing is performed for all
splices.
¥ When the playback fade selection (No. 719) is FADE, V fade processing is performed for all
splices. 
						

							Ð 86 Ð
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.
Inner member
The length of the screws used is subject to restriction. Use screws which are less than
2/5 long in their place.
4 screws must be used to secure each inner member.
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 adaptor using the 4 screws included.
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.
Fasten it to the
rack with set
screws.EIA Standard rack

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

							Ð 87 Ð
Condensation
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:
¥ It is moved to a very humid place full of steam or a room immediately after it has been
heated up.
¥ It 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 has formed on or in the unit, the AUTO OFF lamp lights and the cassette
tape is automatically ejected.
Keep the power supplied and simply wait until the AUTO OFF lamp goes off.

Do not use alcohol, benzine, paint thinners or any other solvents. They cause discoloration of
the unitÕs external parts surfaces and mar the paint finish.
Installing the mechanism dust protector
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 unitÕs 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.
Do not insert fingers or any objects into the video 
casette holder.
Avoid operating or leaving the unit near strong 
magnetic fields. Be especially careful of large audio 
speakers.
Avoid operating or storing the unit in an excessively 
hot, cold, or damp environment as this may result in 
damage both to the recorder and to the tape.
Do not spray any cleaner or wax directly on the unit.
If the unit is not going to be used for a length of time, 
protect it from dirt and dust.
Do not leave a cassette in the recorder when not in 
use.
Do not block the ventilation slots of the unit. n
n
n
n
n
n
nUse this unit horizontally and do not place anything on 
the top panel.
Cassette tape can be used only for one-side, one 
direction recording. Two-way or two-track recordings 
cannot be made.
Cassette tape can be used for either Color or Black & 
White recording.
Do not attempt to disassemble the recorder.
There are no user serviceable parts inside.
If any liquid spills inside the recorder, have the recorder 
examined for possible damage.
Refer any needed servicing to authorized service 
personnel. n
n
n
n
n
n
Mechanism dust protector
ProtrusionProtrusion wInsert the protrusion under 
the top-front metal plate.
qInsert the protrusion alongside 
the metal plate inside the 
mechanism. 
						

							Ð 88 Ð
Error messages
When a warning occurs in this unit, the warning lamp lights up.
Opening the DIAG menu will display the warning description on the counter display and the
monitor. Also, when an abnormal operation is detected in this unit, the AUTO OFF lamp lights
up and a message appears on the counter display.
DIAG menu
This display the VCR information.
VCR information includes ÒWARNINGÓ information and ÒHOURS METERÓ (usage time)
information. A DIAG menu appears on the monitor when the monitor is connected to the
VIDEO OUT 3 connector on the connector section.
Displaying the DIAG menu
1Press the DIAG button.
The DIAG menu screen is displayed on the monitor, and the message is displayed on
the counter display.
2The ÒWARNINGÓ information and ÒHOURS METERÓ information can be switched by
pressing the search buttons.
3Press the DIAG button again to return to the original display.
REMOTEPRESET PRESET PRESET PRESET
REGEN
PRESET FREE RUNREC RUN
MANUAL MANUAL MANUAL MANUAL LOCALVIDEO
LEVELCHROMA
LEVELCFTCREC
INHIBITMENU  SET  DIAGSYNCHRO-
NIZE ENC
CONTROL4F
2FON
OFFON
OFF
ON
OFF
L
LEVEL CUE VIDEO
ASSEMBLEDV AUDIO ANALOGVIDEO Y PB PR
AES/EBUCMPST INPUT SELECT
CH CONDITION
SCH CFSHIFT ADJ START RESETSTAND BYUB EXT EETC INTTC MODE
TAPE
LOCALREV FWD
PULL
OPEN JOGPUSHEJECT
AUTO OFF
SHTL
SLOW CONTROL
REMOTE
EDIT
REWPLAY SERVO
STOP PLAYER
REC REC INHIBIT
FF RECORDERTC/CTL
TC SET
INSERT-VIDEO CH1 CH2 CUE TC
AUTO EDIT
PREROLL PREVIEW
REVIEW REC
PB
PULL FOR VARIABLE PULL
OPENHEADPHONESCH1 CH2 RMONITOR SELECTW
TRIM
INSET
–+
OUT
AOUTAIN
METER
FULL/FINE
POWERUSER SET SDISDI
SDTI(V&A)
SET UP HUE
1, 3
2
ÒWARNINGÓ information display
¥ A warning message is displayed whenever a warning occurs (the warning lamp lights up).
When warnings have not been detected, ÒNO WARNINGÓ is displayed.
¥ When multiple warning occur, the descriptions for each warning can be checked by turning
the search dial. 
						

							Ð 89 Ð
Displaying the ÒHOURS METERÓ information
Turn the search dial to move the cursor  (*). The description 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 ÒHOURS METERÓ information are reset by\
 the shop when performing maintenance or other work.
¥ The search buttons and the search dial cannot be operated while the DIAG\
 menu is displayed. 
If ÒT&S&MÓ is selected in the setup menu No. 003 (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.
Priority Display Description
High Error messages
(See error message table)
INT SG
NO INPUT
Warning messages 
(See error message table)
Low
Displays the time that the power has been supplied in one-hour units. 
Displays the time that the drum has been rotating in one-hour units.
Displays the time that the tape has been running during FF, REW, PLAY, SEARCH (JOG, 
VAR, SHTL), REC, and EDIT modes (except for STILL in the JOG, VAR or SHTL mode) in
one-hour units. 
The number of times for threading/unthreading is displayed in single uni\
ts.
Displays the time that the drum has been rotating in one-hour units. (C\
an be reset)
Displays the time that the tape has been running during FF, REW, PLAY, SEARCH (JOG, 
VAR, SHTL), REC, and EDIT modes (except for STILL in the JOG, VAR or SHTL mode) in
one-hour units. (Can be reset) 
The number of times for threading/unthreading is displayed in single uni\
ts. (Can be reset)
This displays the number of times the power has been turned on in 1-time\
 increments.
When an abnormal operation is detected in this unit, the AUTO OFF lamp lights up 
and an error message is displayed. 
If ÒBBÓ in No. 601 (INT BB SIG) in the setup menu is selected or\
 when ON has been 
selected as the setup menu No. 722 (INT SG) setting, pressing the REC \
button or
the EDIT button (E to E mode) will display ÒINT SGÓ for the first two seconds. This is
also displayed for the first two seconds when starting editing. 
If there is no input signal (except for analog audio) to the connector\
 selected using 
the INPUT SELECT switch, pressing the REC button or the EDIT button (E \
to E
mode) will display ÒNO INPUTÓ for the first two seconds. This is also displayed for
the first two seconds when starting editing. 
When a warning occurs in this unit, the warning lamp lights up and a war\
ning 
message is displayed. When multiple warnings occur, the warning with the highest
priority is displayed. 
						

							Ð 90 Ð
Warning messages
Priority Monitor display Description VTR operation
High UNKNOWN SIG
NOT 1´ 25M SIG
INVALID VIDEO SIG
INVALID AUDIO  SIG
INVALID TC  SIG
FAN STOP
SERVO NOT LOCKED
LOW RF
HIGH ERROR RATE
OVER RECORDING
Low
*
1This warning message appears only while a recording operation is in progress. In this case, no signals are recorded onto the
tape, and only the erasure of any existing material on the tape is performed.
*
2This warning message appears only while a recording operation is in progress. In this case, signals are recorded with the
audio signals muted.
*
3This warning message appears only while a recording operation is in progress. In this case, the time codes generated
internally are recorded.This appears when the SDTI input signals are in neither the
DVCPRO nor DV format.
This appears when the SDTI input signals are not 1´ speed
transmission signals in the DVCPRO (25Mbps) format.
This appears when the compressed video signals among
the SDTI input signals are irregular.
This appears when the audio signals among the SDTI input
signals are irregular.
This appears when the time codes of the SDTI input signals
are irregular.
This is displayed when the fan motor stops.
This is displayed when the servo is not locked for three or
more seconds during playback, recording, or editing.
This is displayed when envelope levels approximately 1/3
that of normal levels are detected for more than one second
during playback, recording, or editing.
This is displayed when the error rate increases and
correction/interpolation is performed on either the video or
audio playback signal.
When voice-over editing is performed using the internal
audio memory, this message appears if the duration of the
signals recorded in the memory exceeds 20 seconds.Recording
operations disabled
Recording
operations disabled
Operation
continues*
1; editing
operations disabled
Operation
continues*
2; editing
operations disabled
Operation
continues*
3; editing
operations disabled
Operation continues
Operation continues
Operation continues
Operation continues
Operation continues
Error messages