Panasonic Digital Video Cassette Recorder Ajd850 Operating Instructions

							Ð 81 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 INPUT switch, the
reference video signal supplied from the REF VIDEO input connector or the 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. 
						

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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 84 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. 
						

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Printed circuit board
Printed
circuit
board
F8 board
ADDA1
SW1 Audio Input
Impedance SW
SW41HIGH This sets the CH1 audio input
impedance.
HIGH/600½
HIGH
SW101 Cue Input
Impedance SWHIGH
SW940
BETA Abbr.
nameFull name FunctionFactory
setting
H2 board
CUE
F4 boardAudio Input
Impedance SW
Component P
B/PR
Output level
selectorThis sets the CH2 audio input
impedance.
HIGH/600½
This sets the CUE input impedance.
This sets the component P
B/PR
output level when connecting with
the editor.
M
II      : MII level
BETA : ß-CAM level 
						

							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 CC3001-99-0400) of CHASSIS TRAK be used. (The complete
slide rail and bracket unit is not available from Panasonic) For further details, consult with
your dealer.
1Remove the screws on the left and right sides of the unit.
2Use the removed screw to attach the inner members of the slide rails.
Inner member
The length of the screws used is subject to restriction. If some of the mounting screws
have been lost or misplaced, use screws which are less than 0.4 long in their place.
Use four screws to secure each inner member.
3Attach the outer member brackets to the rack.
Check that the height is the same for the left and right brackets.
4Attach the AJ-MA75P rack-mounting adaptors with included 4 screws.
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.
Video head cleaning
This unit has an auto head cleaning function which automatically reduces the dirt on the
heads. However, to further increase the unitÕs reliability, it is recommended that its video
heads be cleaned every day.
Use the cleaning fluid designated by Panasonic. 
						

							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 (Î). 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
Warning messages
Priority Monitor display Description VTR operation
High FAN STOPOperation continues
SERVO NOT LOCKED
Operation continues
LOW RF
Operation continues
HIGH ERROR RATE
Operation continues
OVER RECORDING
Operation continues
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 units.
Displays the time that the drum has been rotating in one-hour units. (Can 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 units. (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 warning
message is displayed. When multiple warnings occur, the warning with the highest
priority is displayed.
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. 
						

							Ð 90 Ð
Table of AUTO OFF Error messages
Counter display DescriptionVTR operation(Restart condition)
CAP ROTATE TOO
SLOW
CAP TENSION ERROR
DEW
DRUM ROTATE TOO
FAST
E-FF DRUM ROTATE TOO
SLOW
If the capstan motor speed is abnormally low, the 
AUTO OFF lamp lights, and the message display 
flashes.STOP
(POWER OFFàON)
If an abnormal tension at the supply side is detected 
in the capstan mode, the AUTO OFF lamp lights, and 
the message display flashes.STOP
(POWER OFFàON)
If condensation is detected, the AUTO OFF lamp 
lights, the message display flashes, and the VTR is 
transferred to the eject mode. After the tape is 
ejected, the drum rotates in order to eliminate the 
condensation.
When the condensation has been eliminated, the 
AUTO OFF lamp and message display go off, and 
the VTR can be used.

 1)
 2)
EJECT
(Normal operation
resumed after
condensation is
eliminated)
If the cylinder motor speed is abnormally high, the 
AUTO OFF lamp lights, and the message display 
flashes.STOP
(POWER OFFàON)
If the tape start and tape end are detected simulta-
neously either during or after loading, the AUTO OFF 
lamp lights, and the message display flashes.STOP
(POWER OFFàON)
If condensation is detected in the eject mode, the 
drum starts rotating as soon as it is detected.
If condensation is detected when the cassette 
has been inserted, the drum rotation is stopped, 
and after the tape is ejected, the drum starts 
rotating.
If the cylinder motor speed is abnormally low, the 
AUTO OFF lamp lights, and the message display 
flashes.
STOP
(POWER OFFàON)
FRONT LOAD MOTORIf the cassette does not move up even when 6 
seconds have elapsed since the VTR was transferred 
to the eject mode, the AUTO OFF lamp lights, and 
the message display flashes.

If 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.
STOP
(POWER OFFàON)
LOADING MOTORWhen the unloading operation is not completed within 
6 seconds, the AUTO OFF lamp lights, and the 
message display flashes.

When the loading operation is not completed within 6 
seconds, the VTR is transferred to the eject (unload-
ing) mode.
STOP
(POWER OFFàON)
FRONT LOAD ERRORThe AUTO OFF lamp lights and the message display 
flashes when the take-up reel has been rotating idly 
for a fixed period of time while the start/end 
processing operation during loading (half position) is 
being performed or when it was impossible to eject 
the tape.
STOP
(POWER OFFàON)
Monitor display
CAP ROTA TOO
SLOW
CAP TENSION ERROR
DEW
DRUM ROTA TOO
FAST
E-FF DRUM ROTA TOO
SLOW
FRONT LOAD MOTOR
LOADING MOTORFRONT LOAD ERROR