Philips VR109/55 Service Manual page 11

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Triangle Marks
SW1001
Deck Assembly
Shaft
Hole
SW1001
How to Enter the Service Mode
Note: When the unit is set in the service mode, the
display will keep blinking.
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 TP501
(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. 3.
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.
U21 Deck Extension Cable
Cam Gear
Hole
Pin
U21 Deck Extension Cable
Fig. 2
06/28/2012
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. 3.
CN501
1-5-2
World of Free Manuals
CN251
CN502
CN504
CN503
Q504
J267
Q503
GND
TP502
SW506
S-INH
(REC-SAFETY SW)
Fig. 3
H67T0PFS