Sony HDW-750 Maintenance Manual page 522

11-3. Contents of Menus
A001 : CAPSTAN FG DUTY
Adjusts the duty ratio of the capstan FG signal.
1. Select "A001 : CAPSTAN FG DUTY" on the SERVO ADJUST
MENU display and press the rotary encoder.
2. Press the rotary encoder again to start adjustment.
3. The adjustment ends. (The adjustment data is automatically saved
in the servo system EEPROM (IC403/MDC-13 board)).
When adjustment ends successfully :
The message "COMPLETE" appears.
When the adjustment fails :
The message "INCOMPLETE" appears.
m
When the adjustment fails, the message "INCOMPLETE"
appears, check the following possible causes.
. MDC-13 board capstan FG amplifier or capstan motor driver
circuit is defective.
. SS-92 board capstan drive output signal or duty ratio adjust-
ment output signal is abnormal.
. Capstan motor is defective.
11-20
SERVO ADJUST MENU
A000:NV-RAM INITIALIZE
A001:CAPSTAN FG DUTY
A002:CAPSTAN DELAY
A003:DRUM PHASE
SERVO ADJUST MENU
A001:CAPSTAN FG DUTY
COMPLETE
HDW-750/750CE V1