Read Sharp DV-NC100H (serv.man7) Service Manual online
1-5-1
H9740PFS
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.
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 TP501 (S-INH) to GND. 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.
press the PLAY button. The tape will be loaded into the
Deck Mechanism Assembly. Make sure the power is on,
connect TP501 (S-INH) to GND. 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.
not run a tape all the way to the start or the end of the
tape to avoid tape damage.
PREPARATION FOR SERVICING
Q504
Q503
TP501 S-INH
Fig. 1
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