Drive Mechanism
GV 900…, GV 940…
k
5 - 14
GRUNDIG Service
englisch • English • anglais
Capstan motor rotates at search
speed.
Sequence of operations completed.
Press button
Ì
.
Play –> Video Seach Forward
Record/Play –> Stop
Capstan motor turns in
reverse direction.
Press
ı
button
Sequence of operations completed.
Capstan motor stops.
Stop –> Record/Play
Capstan motor turns
counterclockwise.
Are reel tacho signals fed out ?
Sequence of operations completed.
Press button
Z
or
Å
.
Picture appears.
Unloading
NO
YES
Play –> Still
Loading motor turns in
counterclockwise direction
and master cam turns clockwise.
Slow brake comes into
contact with capstan motor.
Slow brake
pressing
Master cam is in STILL position.
Sequence of operations completed.
Capstan motor stops.
Loading motor stops.
Press
Ó
button.
Sequence of Mechanical Operations
Loading motor turns in reverse
direction and master cam turns
counterclockwise.
Cassette Insertion –> STOP
Inserting
the cassette
Loading
the tape
YES
YES
YES
NO
NO
NO
Unloading
Loading motor starts in normal
direction and master cam turns
clockwise.
Do the output signals from the cam
sensors change within 2.5 sec.?
Are start/end sensors at low level
before cassette has been lowered ?
Insert cassette.
Cassette loading mechanism
starts moving
Headwheel motor starts.
Tape is loaded
Pinch roller comes into contact.
Master cam is in PB position.
Loading motor stops.
Does headwheel motor feed out
FG pulses?
Sequence of operations completed.
Cassette is ejected and loading
motor stops.
Start sensor closed.
Cassette is
caught halfway.
Check tape start/end sensors
or transmitting diode.
