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Mechanical Malfunction determination
1. REEL Malfunction detection
Countermeasure for REEL and CAPSTAN motor
rotation malfunction (Except CASSETTE
LOADING function)
After the Malfunction detection with REEL/CAP-
STAN sensor, the unit shall switch over to STOP
(B) and be REEL Mechanical Malfunction.
a. If the T-REEL pulse is not impressed after a
lapse of 7 sec. at SP, 14 sec. at LP, or more in
the REEL Rotation Mode like PLAY/REC, FS/
RS Mode, and the T-REEL or S-REEL pulse is
not impress after a lapse of 4 sec. or more in
REEL Rotation Mode of FF/REW, it shall be
assumed to stop the rotation and switch over to
STOP (B) position, then POWER be turned
OFF and the unit be REEL Mechanical
Malfunction. (T-REEL and S-REEL for the
models on S-REEL and only T-REEL for other
models)
b. If the C-FG pulse is not impressed for a lapse
of 1 sec. or more during the CAPSTAN MOTOR
rotation, it shall be MOTOR Rotation
Malfunction (REEL Malfunction).
2. DRUM Malfunction detection
Detect the DRUM rotation at the D-FG input
terminal.
If the variation of D-FG input level is not detected
for a lapse of 1 sec. or more when D-CONT is "H",
it shall be assumed to be Rotation Malfunction and
be DRUM Malfunction.
When detect Drum Malfunction, POWER shall be
turned OFF after the unit switches over to STOP
(B) Mode.
3. Countermeasure for TAPE LOADING Malfunction
Detect the Malfunction with the LOADING Switch.
a. TAPE LOADING Malfunction
If LD-SW does not go to the established
position after a lapse of 7 sec. or more from
TAPE LOADING or TAPE UNLOADING start,
the LOADING function shall immediately be
stopped and POWER be turned OFF, and
inform the Timer about the LOADING
Mechanical Malfunction.
b. LD-SW Position Malfunction at each mode
When the unit operates at each mode, even if
the LD-SW position changes from the
established one in its mode, it keeps the
function according to its mode.
4. Countermeasure for CASSETTE LOADING
Malfunction
a. CASSETTE IN operating Malfunction
If LD-SW does not go to SB position after a
lapse of 5 sec. or more from the CASSETTE
insertion start, the unit starts the CASSETTE
OUT operation.
After switch over to CASSETTE OUT operation
and then a laps of 5 sec. or more from the
CASSETTE OUT operation start, if LD-SW
does not go to the EJ position or if START
Sensor and END Sensor does not turn "ON" at
the EJ position, the unit starts again to insert
CASSETTE.
(However in S-INH state, the START/END
Sensor shall be disabled).
b. CASSETTE OUT operating Malfunction
After a lapse of 5 sec. or more from
CASSETTE OUT operation start, if LD-SW
does not go to the EJ position or if START
Sensor and END Sensor does not turn "ON" at
the EJ position, the unit starts to insert
CASSETTE.
(However in S-INH state, the START/END
Sensor shall be disabled).
When the unit switches over to CASSETTE
insertion at CASSETTE IN or CASSETTE OUT
Malfunction, if LD-SW does not go to the SB
position after a lapse of 5 sec. or more from
CASSETTE insertion start, the function shall
immediately be stopped and POWER be
turned OFF, and the unit be CASSETTE
LOADING Malfunction.
c. When POWER is turned ON, if the CL position
or GC position cannot be detected after 5 sec.
LD-REV operation and 5 sec. LD-FWD
operation, the function shall immediately be
stopped and POWER be turned OFF, and the
unit be CASSETTE LOADING Malfunction.
d. When POWER is turned ON without
CASSETTE (EJ position) and LD-SW is
monitored all the time, if the CL or GC position
is detected continuously for 1 sec. or more, the
POWER shall be turned OFF and the unit be
CASSETTE LOADING Malfunction.
Countermeasure for Mechanical
Malfunction
If the unit detects Mechanical Malfunction, turn the
POWER OFF. If the unit is Mechanical Malfunction,
Key input except POWER key shall be disabled and
CASSETTE insertion disabled. When POWER Key is
entered, the POWER is turned ON and the unit
switches over the EJECT Mode. (Return with POWER
ON)
1-8-2
T6609MTI
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