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How to Enter the Service Mode
About Optical Sensors
Caution:
An optical sensor system is used for the Tape Start and
End Sensors on this equipment. Carefully read and
follow the instructions below. Otherwise the unit may
operate erratically.
What to do for preparation
Insert a tape into the Deck Mechanism Assembly and
press the PLAY button. The tape will be loaded into the
Deck Mechanism Assembly. Make sure the power is
on, connect TP502 (SENSOR INHIBITION) to TP511
(GROUND). This will stop the function of Tape Start
Sensor, Tape End Sensor and Reel Sensors. (If these
TPs are connected before plugging in the unit, the
function of the sensors will stay valid.) See Fig. 1.
Note: Because the Tape End Sensors are inactive, do
not run a tape all the way to the start or the end of the
tape to avoid tape damage.
PREPARATION FOR SERVICING
About REC-Safety Switch
Caution:
The REC-Safety Switch is directly mounted on the Main
CBA. When the Deck Mechanism Assembly is removed
from the Main CBA for servicing, this switch does not
work automatically.
What to do for preparation
In order to record, press the Rec button while pushing
REC-SAFETY SW on the Main CBA. See Fig. 1.
CN501
CN251
Q503
SW506
(REC-SAFETY SW)
1-4-1
CN504
CN502
CN503
Q504
TP511
GND
TP502
S-INH
Fig. 1
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