Sony DNW-A75 Maintenance Manual page 109

C010 : S REEL MOTOR
C011 : T REEL MOTOR
These submenus check the function of an S reel motor or T reel motor.
Checking
(1) Turn the search dial (in JOG mode).
. Check to see that the reel table rotates in the specified direction at a fixed
speed (about one revolution per second) after releasing the reel brake.
Rotating direction of search dial
FORWARD (2)
REVERSE (3)
(2) Holt the rotation of the search dial.
. Check to see that the reel table stops and that the reel brake operates.
(3) To finish the check, press the MENU button once.
In case of NG
When the reel table operation is defective:
. Check the reel motor driver circuit on the DR-315 board.
. Check the reel motor.
When the reel table rotation is not constant at the fixed speed:
. Adjust the duty ratio of an S reel FG or T reel FG using a submenu A001 or A002.
. Check the FG output from a reel table FG sensor (DME on the SE-344 board).
. Check the reel FG shaping circuit on the MS-58 board.
When the reel brake operation is defective:
. Check an S or T brake solenoid using a submenu C021 or C022.
DNW-A75/A75P
Rotating direction of reel table
Clockwise (2)
Counterclockwise (3)
FG sensor for S reel table FG sensor for T reel table
S reel table
Locations of Reel Table FG Sensors
4-2. TAPE Maintenance Mode (M0)
4-2-2. SERVO CHECK Mode (C00-03)
SERVO CHECK
MOTOR CHECK
C010:S REEL MOTOR
TURN JOG DIAL
IN JOG MODE
SERVO CHECK
MOTOR CHECK
C011:T REEL MOTOR
TURN JOG DIAL
IN JOG MODE
T reel table
(S cassette position)
4-19