Sony BVW-55 Maintenance Manual page 91

C013 : DRUM MOTOR
This menu checks the function of a drum motor.
(1) Press the SET button.
. Confirm that the drum rotates.
. Confirm that the LCD monitor changes as shown on the right.
(2) Press the MENU button when terminating the check.
. Confirm that the drum stops.
In case of NG
. Confirm that no mechanical abnormality exists.
. Check the drum motor drive circuit (on the SV-206 board).
. Check the FG and PG outputs from a drum motor.
. Check each circuit that processes the drum FG/PG on the SV-206 board.
BVW-55
3-2. TAPE Maintenance Mode (M0)
3-2-2. SERVO CHECK Mode (C0)
MOTOR CHECK
C013:DRUM MOTOR
SPEED :
PHASE :
PG :
[SET]
MOTOR CHECK
C013:DRUM MOTOR
SPEED : NG
PHASE : UNLOCK
PG : NO EXIST
After about 3 sec.
MOTOR CHECK
C013:DRUM MOTOR
SPEED : OK
PHASE : LOCK
PG : EXIST
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