Sharp VC-M23SM Servicehandbuch Seite 33

ADJUSTMENT OF SP/LP SLOW TRACKING
PRESET (VC-M43SM/M431SM)
Colour TV monitor .
Self-recorded tape
(SP/LP mode) (See Note below)
Tracking control buttons (+) or (-)
Minimized noise on
monitor screen
1. Have the unit to receive a good TV broadcast or feed
a video signal to the VIDEO IN jack. (See note @
below)
2. Set the tape speed in SP mode by using the remote
control and record the signal on tape.
3. Rewind and play the tape where signal was recorded
in above step.
4. Press the SLOW button on the remote control, and
playback the recorded portion in the slow mode.
5. Make for a moment short-ciucuit between TP5001
and TP5002, both located at the front side on the
main PWB.
Be sure that all the fluorescent display tubes light up
into the TEST mode.
6. Look at the monitor screen and adjust the (+) or (-)
TRACKING buttons so that the there is noise disap-
pears from the screen.
. Press the STOP button to return to normal mode.
. Play the tape a few seconds then press the SLOW
button again and make sure there is no noise in the
screen.
(For the LP mode put adjustment at the same adjust-
ment way as SP mode.)
Notes:
@ Self-recorded tape means a cassette whose program
was recorded by the unit being adjusted.
@ The TV program will not be recorded if RCA or 21 pin
plugs are pluged in to the AUDIO/VIDEO input termi-
nals.
Measuring
instrument
Mode
Cassette
Control
Specification
~~
33
ADJUSTMENT OF FV (False Vertical Sync)
OF STILL PICTURE (VC-M23SM/M231SM)
Colour TV monitor
Playback stil |
Self-recorded tape
(See Note below @)
Tracking control buttons (+) or (-)
No vertical jitter of picture
1. Play a cassette which was recorded.
2. Press the PAUSE/STILL button to freeze the picture.
3. Look at the monitor screen and adjust (+) or (-)
TRACKING buttons so that the vertical jitter of the
picture to be minimized.
4, Play and freeze the self-recorded tape and make sure
vertical jitter of the picture is not noticeable.
Note:
@ The FV goes back to the it's initial state when the unit
is put into the system controller reset mode due to
power failure, etc.
In this case, preset the FV once again.
® Self-recorded tape is a cassette whose program was
recorded by the unit being adjusted.
Measuring
instrument
Mode
Cassette
Control
Specification
ADJUSTMENT OF FV(False Vertical Sync)
OF STILL PICTURE (VC-M43SM/M431SM)
Colour TV monitor |
Playback still
Self-recorded tape (SP mode)
(See Note below @)
Tracking control buttons (+) or (-)
No vertical jitter of picture
1. Play a cassette witch was recorded by the unit in SP
mode.
2. Press the PAUSE/STILL button to freeze the picture.
3. Look at the monitor screen and adjust (+) or (-)
TRACKING buttons so that the vertical jitter of the
picture to be minimized.
4, Play and freeze the self-recorded tape in SP mode
and make sure vertical jitter of the picture is not
noticeable.
(For the LP mode put adjustment at the same adjust-
ment way as SP mode.)
Note:
@ The FV goes back to the it's initial state when the unit
is putinto the system controller reset mode due to
power failure, etc.
in this case, preset the FV once again.
@ Self-recorded tape is a cassette whose program was
recorded by the unit being adjusted.
Measuring
instrument
Mode
Cassette
Control
Specification