Mechanical Trouble Indicator - Emerson Symphonic SC1304 Service Manual

MECHANICAL TROUBLE INDICATOR

1, Each Malfunction Indication
If the MONITOR is turned ON right after the Mechani-
cal Malfunction occurs or POWER SAFETY is turned
ON, display the following character to show Malfunc-
tion after the EJECT display.
Immediately preceding
Malfunction
REEL Malfunction
DRUM Malfunction
CASSETTE LOADING Mal-
function
TAPE LOADING Malfunction
P-SAFETY 2
P-SAFETY 3
P-SAFETY 1
Example: If REEL Malfunction
EJECT R
2, Each Malfunction evaluation
method
P-SAFETY 1 protect
If P-SAFETY 1 port becomes continuously 2.5V or
more for 120 msec. (4 times 40 msec. interval), the
unit shall immediately turn OFF the POWER/MONI-
TOR and switch over to the Mechanical Malfunction
mode with POWER OFF.
(To return from this mode shall become possible only
by POWER Key as in the case of the Mechanical Mal-
function).
POWER SAFETY
1) POWER SAFETY 2
Display character
R
D
C
T
2
2) POWER SAFETY 3
3
1
1-7-7
If P-SAFETY 2 port becomes continuously 2.5V or
less for 120 msec. (4 times 40 msec. interval) when
P-ON-H port is ON, the unit shall be assumed to be
the Power Malfunction 2 and immediately turn OFF
the POWER/MONITOR and switch over the
Mechanical Malfunction mode with POWER OFF.
(Shall not unload)
(To return from this mode shall become possible
only by POWER Key as in the case of the Mechan-
ical Malfunction).
* However the POWER SAFETY 2 function shall be
disabled during 500 msec. right after the P-ON-H
turns ON.
If P-SAFETY 3 port becomes continuously 2.5V or
over for 120 msec. (4 times 40 msec. interval)
when MONITOR is ON, P-SAFETY 3 function is
available. After that, if P-SAFETY 3 port becomes
continuously 2.5V or less for 120 msec. (4 times 40
msec. interval), the unit shall be assumed to be the
Power Malfunction 3 and immediately turn OFF the
POWER/MONITOR and switch over the Mechani-
cal Malfunction mode with POWER OFF.
(Shall not unload)
(To return from this mode shall become possible
only by POWER Key as in the case of the Mechan-
ical Malfunction).
T5553MTI