Mechanical Malfunction determination4) Countermeasure for CASSETTE LOADING Mal-
function
1) REEL Malfunction detection
Countermeasure for REEL and CAPSTAN motora) CASSETTE IN operating Malfunction
rotation malfunction (Except CASSETTE LOAD-If LD-SW does not go to SB position after a lapse
ING function)of 5 sec. or more from the CASSETTE insertion
After the Malfunction detection with REEL/CAP-start, the unit starts the CASSETTE OUT opera-
tion.
STAN sensor, the unit shall switch over to STOP
(B) and be REEL Mechanical Malfunction.After switch over to CASSETTE OUT operation and
then a laps of 5 sec. or more from the CASSETTE
a) If the T-REEL pulse is not impressed after a lapseOUT operation start, if LD-SW does not go to the
of 5 sec. at SP, 10 sec. at LP, 14 sec. at SLP, or
more in the REEL Rotation Mode like PLAY/REC,EJ position or if START Sensor and END Sensor
FS/RS Mode, and the T-REEL or S-REEL pulse isdoes not turn "ON" at the EJ position, the unit
starts again to insert CASSETTE.
not impress after a lapse of 4 sec. or more in REEL
Rotation Mode of FF/REW, it shall be assumed to(However in S-INH state, the START/END Sensor
stop the rotation and switch over to STOP (B) posi-shall be disabled).
tion, then POWER be turned OFF and the unit beb) CASSETTE OUT operating Malfunction
REEL Mechanical Malfunction. (T-REEL and S-After a lapse of 5 sec. or more from CASSETTE
REEL for the models on S-REEL and only T-REEL
for other models)OUT operation start, if LD-SW does not go to the
EJ position or if START Sensor and END Sensor
b) If the C-FG pulse is not impressed for a lapse of 1does not turn "ON" at the EJ position, the unit
sec. or more during the CAPSTAN MOTOR rota-starts to insert CASSETTE.
tion, it shall be MOTOR Rotation Malfunction(However in S-INH state, the START/END Sensor
(REEL Malfunction).shall be disabled).
2) DRUM Malfunction detection
Detect the DRUM rotation at the D-FG input termi-
nal. When the unit switches over to CASSETTE inser-
If the variation of D-FG input level is not detectedtion at CASSETTE IN or CASSETTE OUT Mal-
for a lapse of 1 sec. or more when D-CONT is "H",function, if LD-SW does not go to the SB position
it shall be assumed to be Rotation Malfunction andafter a lapse of 5 sec. or more from CASSETTE
be DRUM Malfunction. insertion start, the function shall immediately be
When detect Drum Malfunction, POWER shall bestopped and POWER be turned OFF, and the unit
turned OFF after the unit switches over to STOPbe CASSETTE LOADING Malfunction.
(B) Mode.c) When POWER is turned ON, if the CL position or
3) Countermeasure for TAPE LOADING MalfunctionGC position cannot be detected after 5 sec. LD-
Detect the Malfunction with the LOADING Switch.REV operation and 5 sec. LD-FWD operation, the
function shall immediately be stopped and POWER
a) TAPE LOADING Malfunctionbe turned OFF, and the unit be CASSETTE LOAD-
If LD-SW does not go to the established positionING Malfunction.
after a lapse of 7 sec. or more from TAPE LOAD-d) When POWER is turned ON without CASSETTE
ING or TAPE UNLOADING start, the LOADING
function shall immediately be stopped and POWER(EJ position) and LD-SW is monitored all the time,
if the CL or GC position is detected continuously for
be turned OFF, and inform the Timer about the1 sec. or more, the POWER shall be turned OFF
LOADING Mechanical Malfunction.
and the unit be CASSETTE LOADING Malfunction.
b) LD-SW Position Malfunction at each mode
When the unit operates at each mode, even if theCountermeasure for Mechanical
LD-SW position changes from the established oneMalfunction
in its mode, it keeps the function according to its
mode.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)
1-7-8T5553MTI |
ACEC
