1-4-1
HE470PFS
PREPARATION FOR SERVICING
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 TP507 (SENSOR INHIBITION) to GND.
This will stop the function of Tape Start Sensor, Tape
End Sensor and Reel Sensors. (If these TPs are con-
nected 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.
TP507
S-INH
Q504
Q505
Fig. 1
Содержание 27C-450
Страница 21: ...Main 1 6 Schematic Diagram 1 8 3 1 8 4 HE341SCM1 ...
Страница 22: ...Main 2 6 Sensor Schematic Diagram 1 8 5 1 8 6 HE341SCM2 ...
Страница 23: ...Main 3 6 Schematic Diagram 1 8 7 1 8 8 HE341SCM3 ...
Страница 24: ...Main 4 6 Jack Schematic Diagram 1 8 9 1 8 10 HE341SCM4 ...
Страница 26: ...HE341SCM6 1 8 13 1 8 14 Main 6 6 Schematic Diagram ...
Страница 29: ...1 8 19 1 8 20 Jack CBA Top View Jack CBA Bottom View BHE470F01014 C ...
Страница 52: ...3 1 1 HE240FEX A1X EXPLODED VIEWS Front Panel ...
Страница 54: ...3 1 3 HE341PEX Some Ref Numbers are not in sequence X2 X3 X20 X1 X4 S1 Unit S3 A14 S2 S2 X6 S7 Packing ...
Страница 69: ...27C 450 HE341FD ...