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15521(N)
D3
Head playback
output
voltage
check
keeette
Usec
Cassette
with
normal
playback
output
Recorded
cassette
(With tabs)
Rental
cassette
(Without
tabs)
Werning
Display
,t~"
blinking
"L"
blinking
"L"
blinking
Envelope Detection Output Voltage
Envelope
detec-
tion
output
J+z+05095v
4V
-----------------------------------
(IC301
Pin 25 or
C3016
HOT
side:
see Fig. 2-l-1)
Switching
pulse
(TP183:
see Fig.
CH-1
CH-2
2-l-2)
Envelope detec-
tion output
4V t-----------------------------------
(IC301 Pin 25 or
C3016 HOT side:
see Fig.
2-l-1)
ov~lz~::'han
Switching
pulse
(TP183:
see Fig.
CH-1
CH-2
2-l-2)
Envelope
detec-
tion
output
[
4V
--------------
. . . . . . . . . . . . . . . . . . . . .
(IC301
Pin 25 or
C3016
HOT
side:
-----------------------------------
see Fig. 2-l-1)
Ov ~
A
Switching
pulse
I
(TP183: see Fig.
CH-I
I
CH-2
2-l-2)
Less than
0.5V
Envelope
detec-
4V
tion output
(IC301
Pin 25 or
C3016
HOT
side:
see Fig. 2-l-1)
Ov =&~$than
Switching
pulse
(Tp183
see Fig.
CH-I
CH-2
2-l-2)
Main Cause
When
the output voltage
dif-
ference
of the two channels
is 0.5 to 0.95V
The video heads of both are
normal
When
the output voltage
dif-
ference
of the two channels
is more than 0.95V
Tracking adjustment has not
been performed accurately
One video head is clogged
" One video head has worn out
When theaverageoutputvoltage
of the two channels is less than
0.5V
Tracking adjustment has not
been performed accurately
Both video heads are clogged
Both video heads have worn
out
When
the output voltage
dif-
ference of the two channels is
more than 0.95V
Tracking adjustment has not
been performed accurately
c One video head is clogged
One video head has worn out
Some rental cassettes may have extremely
low video playback outputs even when both video heads are
normal. As the average output voltage of the two heads may be less than 0.5. for some, no warning displays
will be shown.
—
-—
3. Cylinder rotation accumulated time disrdav only VHR-4951R emtdovs this function (However,
*is function will be equipped only from the middle of production.
-
.
Press the STOP button on the remote control for approximately
10 seconds and the cylinder rotation accumulated
time
excluding the cassette out and standby operation time will be displayed on the "Hours" display in units of 100 hours. ("33" will
be displayed for 3 seconds for 3,300 to 3,399 hours.)
To erase the cylinder
rotation accumulated
time display, press the RESET button on the remote control during the
accumulated time display.
ww
--
111
11'
,:,..:.m::
,:,..,.:.:
-
-
Display panel
:$
ill
_l
+ i
:::
LI
3
3
3"'
i....? !..,,.! "'"LI L
Cylinder rotation accumulated display (Tape counter "Hours" display)
—
–4–
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