1-4-1
HM4N0PFS
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 (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.
Fig. 1
TP507
S-INH
Q504
Q505
Summary of Contents for VC4006F
Page 24: ...1 10 3 HM320SCM1 Main 1 6 Schematic Diagram...
Page 25: ...1 10 4 HM320SCM2 Main 2 6 Sensor Schematic Diagram...
Page 26: ...1 10 5 HM320SCM3 Main 3 6 Schematic Diagram...
Page 27: ...1 10 6 HM320SCM4 Main 4 6 Jack Schematic Diagram...
Page 29: ...1 10 8 HM320SCM6 Main 6 6 Schematic Diagram...
Page 32: ...1 10 11 BHM450F01011C Jack CBA Top View Jack CBA Bottom View...
Page 38: ...1 15 1 HM320FEX EXPLODED VIEWS Front Panel A1X...
Page 50: ...VC4006F HM320FD 2006 05 24...
