Sony DNW-A75 Maintenance Manual page 118

4-2. TAPE Maintenance Mode (M0)
4-2-2. SERVO CHECK Mode (C00-03)
C03 : REEL/CAPSTAN MOTOR & FG CHECK
This menu checks the following items automatically and continuously.
. S reel FG duty ratio (C031 : S REEL FG/MOTOR CHECK)
. T reel FG duty ratio (C032 : T REEL FG/MOTOR CHECK)
. Capstan FG duty ratio (C033 : CAPSTAN FG/MOTOR CHECK)
. S reel offset/friction level (C034 : S REEL OFFSET/FRICTION)
. T reel offset/friction level (C035 : T REEL OFFSET/FRICTION)
. S reel motor torque (C036 : S REEL MOTOR TORQUE)
. T reel motor torque (C037 : T REEL MOTOR TORQUE)
To execute the check
(1) Select C03 in the servo check mode and press the SET button to start the check.
. During the automatic check, the item name in execution and a message
"CHECKING..." will be displayed on the superimposed display. Only the
menu number (C031 to C037) will be displayed in the time data display area.
(2) Check to see that all checks are completed and that a message "CHECK COM-
PLETE" is displayed.
. If a message "# CHECK INCOMPLETE #" is displayed halfway, refer to the
following NG cases during the check.
(3) To return to the selection of the servo check mode, press the MENU button.
In case of NG during (C031) S REEL FG/MOTOR CHECK
Perform the S reel motor check (C010). If no abnormality is found in the motor or
its drive circuit, perform the S reel FG duty adjustment (A001).
In case of NG during (C032) T REEL FG/MOTOR CHECK
Perform the T reel motor check (C011). If no abnormality is found in the motor or
its drive circuit, perform the T reel FG duty adjustment (A002).
In case of NG during (C033) CAPSTAN FG/MOTOR CHECK
Perform the capstan motor check (C014). If no abnormality is found in the motor or
its drive circuit, perform the capstan FG duty adjustment (A003).
In case of NG during (C034) S REEL OFFSET/FRICTION
Perform the S reel motor check (C010). If no abnormality is found in the motor or
its drive circuit, perform the S reel offset/friction adjustment (A004).
In case of NG during (C035) T REEL OFFSET/FRICTION
Perform the T reel motor check (C011). If no abnormality is found in the motor or
its drive circuit, perform the T reel offset/friction adjustment (A005).
In case of NG during (C036) S REEL MOTOR TORQUE
Perform the S reel motor check (C010). If no abnormality is found in the motor or
its drive circuit, perform the S reel torque adjustment (A006).
In case of NG during (C037) T REEL MOTOR TORQUE
Perform the T reel motor check (C011). If no abnormality is found in the motor or
its drive circuit, perform the T reel torque adjustment (A007).
4-28
SERVO CHECK
*
C00:INPUT CHECK
C01:MOTOR CHECK
C02:PLUNGER SOL. CHECK
C03:REEL/CAPSTAN MOTOR
& FG CHECK
[SET]
SERVO CHECK
REEL/CAPSTAN MOTOR
& FG CHECK
S REEL FG/MOTOR CHECK
CHECKING...
(omitted) After about 100 sec.
SERVO CHECK
REEL/CAPSTAN MOTOR
& FG CHECK
CHECK COMPLETE
[MENU]
SERVO CHECK
*
C00:INPUT CHECK
C01:MOTOR CHECK
C02:PLUNGER SOL. CHECK
C03:REEL/CAPSTAN MOTOR
& FG CHECK
(Ex. of NG)
SERVO CHECK
REEL/CAPSTAN MOTOR
& FG CHECK
S REEL FG/MOTOR CHECK
# CHECK INCOMPLETE #
DNW-A75/A75P