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2.3
VHS MECHANISM
2.3.1 Notes
This model's mechanism relates closely to the rotary encoder
and system control circuit (the rotary encoder is meshed with the
control cam).
The system control circuit detects the mechanism condition us-
ing the rotary encoder's phase (internal switch phase). There-
fore, the parts such as the rotary encoder, control plate, loading
gear and control cam need to be installed correctly in order for
the mechanism to operate properly. (For the mechanism phase
adjustment, refer to the installation of each part.)
• Before using a soldering iron, be sure to disconnect the power
plug from the AC outlet.
• Do not touch any of the adjustment points until a defect posi-
tion is specified.
• When plugging or unplugging the connector, be sure not to
damage the wire.
• Be sure the springs are hooked all the way around and in the
correct direction.
• When performing repairs, take care not to damage a catch,
etc.
OK
Fig.2-3-1
2.3.2 Mechanism operation check
When the mechanism is operated without a cassette loaded, op-
erate the mechanism in the mechanism service mode.
2-30 (No.86700)
NG
(
not hooked all the
)
way around
2.3.3 Setting the mechanism assembling mode
The mechanism-assembling mode is provided with this mecha-
nism. When disassembling and assembling, it is required to en-
gage this mode.
Set the mode by adopting the following procedures.
(1) Remove the mechanism assembly using the disassem-
bling procedure.
(2) Turn gear (a) of the loading motor manually to set the
mechanism assembly to the eject end mode. Make sure
that the main deck is connected to the guide hole (a) of the
drive lever and the seal (a) of the main deck is connected
to the mark "E" of the control plate. This condition is called
the mechanism-assembling mode.
Seal (a)
"E" mark
CONTROL PLATE
LOADING MOTOR
Loading
Fig.2-3-2
Guide hole (a)
DRIVE LEVER
Gear (a)
Unloading
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