Sony BVW-55 Maintenance Manual page 88

3-2. TAPE Maintenance Mode (M0)
3-2-2. SERVO CHECK Mode (C0)
C011 : FUNCTION CAM MOTOR
This menu checks the functions of a function cam.
(1) Slowly turn the JOG dial (JOG mode) in FORWARD (2) direction.
. Confirm that the threading motor rotates and that the threading link moves
threading direction and stops in the threading end state.
. Confirm that the LCD monitor changes as described below.
(Check that the function cam code changes following the table in next page.)
UNTHREAD END 8 ........... 8 (omitted) 8 THREAD END
1100
n
The threading motor also stops when the rotation of the JOG dial stops.
(2) Slowly turn the JOG dial (JOG mode) in REVERSE (3) direction.
. Confirm that the threading motor rotates and that the threading link moves
unthreading direction and stops in the unthreading end state.
. Confirm that the LCD monitor changes as described below.
(Check that the function cam code changes following the table in next page.)
THREAD END 8 ........... 8 (omitted) 8 UNTHREAD END
0110
n
The function cam also stops when the rotation of the JOG dial stops.
(3) To terminate the check, return to the unthreading end state and push the MENU
button.
n
Message "SET UNTHREAD END TO RETURN" is displayed if the threading
ring is not in the unthreading end state when the MENU button is pushed.
In case of NG
. Confirm that no mechanical abnormality exists.
. Check the function cam sensor (on the SV-206 board).
. Check the function cam sensor circuit (on the SV-206 board).
. Check the function cam motor drive circuit (on the SV-206 board).
. Check the function cam motor.
3-16
1100
0100
0110
1110
FUNCTION CAM CODE
MOTOR CHECK
C011:FUNCTION CAM MOTOR
FUNCTION MODE
* * * * * *
UNTHREAD END
1100
TURN JOG DIAL
IN JOG MODE
FWD:THREAD, REV:UNTH
DIAL DIAL
(2)
(3)
MOTOR CHECK
C011:FUNCTION CAM MOTOR
FUNCTION MODE
...........
1100
TURN JOG DIAL
IN JOG MODE
FWD:THREAD, REV:UNTH
DIAL DIAL
(2)
(3)
(omitted) (omitted)
DIAL
DIAL
(2)
(3)
MOTOR CHECK
C011:FUNCTION CAM MOTOR
FUNCTION MODE
* * * * * *
THREAD END
0110
TURN JOG DIAL
IN JOG MODE
FWD:THREAD, REV:UNTH
MOTOR CHECK
C011:FUNCTION CAM MOTOR
FUNCTION MODE
* * * * * *
THREAD END
# SET UNTHREAD END #
# TO RETURN #
TURN JOG DIAL
IN JOG MODE
FWD:THREAD, REV:UNTH
BVW-55