Sony Betacam SX DNW-A100 Maintenance Manual page 156

4-2. TAPE Maintenance Mode (M0)
4-2-2. SERVO CHECK Mode (C0)
C013 : CASSETTE COMP.
This menu checks the functions of a cassette compartment motor and cassette-down
sensor.
c
Be careful not to execute this menu with the foreign matter put into the cassette
compartment.
Remove it when a cassette tape is located in the cassette insertion slot. The cassette
is caught halfway when this menu is executed in this state.
n
. "HORIZ." or "VERT." is displayed when this menu is selected in the state where
the cassette compartment has stopped halfway due to abnormality.
. The power supply to the motor stops to protect the motor and movable part when
the driving time of a motor continuously exceeds about six seconds due to abnor-
mality.
(1) Press the SET button when "UP" is displayed.
. Confirm that the compartment goes down.
. Confirm that the screen display of the video monitor changes as described
below.
UP 8 HORIZ. 8 VERT. 8 DOWN
(2) Press the SET button when "DOWN" is displayed.
. Confirm that the compartment goes up.
. Confirm that the screen display of the video monitor changes as described
below.
DOWN 8 VERT. 8 HORIZ. 8 UP
(3) Press the MENU button when terminating the check.
In case of NG
When the compartment operation is defective
. Confirm that no mechanical abnormality exists.
. Check the motor drive circuit of the cassette compartment (on the DR-315 board).
. Check the cassette compartment motor.
When the actual compartment position does not coincide with the display on the
superimpose picture
. Check the cassette-down sensor (on the CL-29 board).
. Check the sensor input port of MPU (IC1 on the MS-50 board).
4-22
SERVO CHECK
MOTOR CHECK
C013:CASSETTE COMP.
UP
[SET]
SERVO CHECK
MOTOR CHECK
C013:CASSETTE COMP.
HORIZ.
SERVO CHECK
MOTOR CHECK
C013:CASSETTE COMP.
VERT.
SERVO CHECK
MOTOR CHECK
C013:CASSETTE COMP.
DOWN
DNW-A100/A50/A45
DNW-A100P/A50P/A45P