Sony GY-2120WD Maintenance Manual page 333

6-2. Description of Commands
In case of NG:
For SV11 (S Reel Motor Check)
When the S reel table operation is defective:
. Check the S reel motor drive circuit (DR-327 board or MS-54 board).
. Check the S reel motor.
When the S reel table does not rotate at a constant speed (about 1 r.p.s.):
. Readjust the S reel FG duty cycle (SV07).
. Check the FG output from an S reel table rotation sensor.
. Check the S reel FG amplifier circuit (DR-327 board or MS-54 board).
For SV12 (T Reel Motor Check)
When the T reel table operation is defective:
. Check the T reel motor drive circuit (DR-327 board or MS-54 board).
. Check the T reel motor.
When the T reel table does not rotate at a constant speed (about 1 r.p.s.):
. Readjust the T reel FG duty cycle (SV08).
. Check the FG output from a T reel table rotation sensor.
. Check the T reel FG amplifier circuit (DR-327 board or MS-54 board).
T reel table rotation sensor
S reel table rotation sensor
S reel table
T reel table
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GY-2120WD/WS