Sony DNW-A75 Maintenance Manual page 141

For Automatic Adjustment Failure (A000 to A011)
The circuit in which failure occurred can be traced to some
degree by the trouble message displayed together when the
message "# ADJUST INCOMPLETE #" is displayed
during execution of adjustment menus A000 to A011.
n
The trouble message display indicates that no adjustment
could be performed because the circuit described in this
manual did not operate normally. Moreover, other circuits
(e.g., control signal system) in which failure actually
occurred may also exist.
A000 : A000-A008 ADJUST
Refer to the description of A001 to A008.
A001 : S REEL FG DUTY
When "S REEL FG AMP TROUBLE" is displayed:
8 Check the S reel FG amplifier circuit on the MS-58
board.
When "S REEL DRIVER TROUBLE" is displayed:
8 Check the S reel motor driver circuit on the DR-315
board.
A002 : T REEL FG DUTY
When "T REEL FG AMP TROUBLE" is displayed:
8 Check the T reel FG amplifier circuit on the MS-58
board.
When "T REEL DRIVER TROUBLE" is displayed:
8 Check the T reel motor driver circuit on the DR-315
board.
A003 : CAPSTAN FG DUTY
When "CAPSTAN FG AMP TROUBLE" is displayed:
8 Check the capstan FG amplifier circuit on the MS-58
board.
8 Check the capstan motor driver circuit on the DR-315
board.
A004 : S REEL OFFSET/FRICTION
A006 : S REEL TORQUE
When "# S REEL TROUBLE #" is displayed in these menus:
8 Execute the S reel FG duty adjustment (A001 : S
REEL FG DUTY) again.
8 Check the S reel motor driver circuit on the DR-315
board.
DNW-A75/A75P
A005 : T REEL OFFSET/FRICTION
A007 : T REEL TORQUE
When "# T REEL TROUBLE #" is displayed:
8 Execute the T reel FG duty adjustment (A002 : T
REEL FG DUTY) again.
8 Check the T reel motor driver circuit on the DR-315
board.
A008 : S/T TENSION OFFSET
When "S REEL DRIVER TROUBLE" is displayed:
8 Check the S tension detection circuit on the MS-58
board.
8 Check the S reel motor driver circuit on the DR-315
board.
When "T REEL DRIVER TROUBLE" is displayed:
8 Check the T tension detection circuit on the MS-58
board.
8 Check the T reel motor driver circuit on the DR-315
board.
A010 : CAPSTAN FREE SPEED
Check to see that the played back tape is the following
alignment tape.
SR2-1 (for 525/60 system of Betacam SX)
SR2-1P (for 625/50 system of Betacam SX)
CR2-1B (for 525/60 system of Betacam SP)
CR2-1B PS (for 625/50 system of Betacam SP)
When "CAPSTAN SERVO TROUBLE" is displayed:
8 Execute the capstan FG duty adjustment (A003 :
CAPSTAN FG DUTY) again.
8 Check the capstan FG amplifier circuit and CTL
amplifier circuit on the MS-58 board.
When "CAPSTAN DRIVER TROUBLE" is displayed:
8 Check the capstan motor driver circuit on the DR-315
board.
A011 : RF SWITCHING POS.
Check to see that the played back tape is the following
alignment tape.
SR2-1 (for 525/60 system of Betacam SX)
SR2-1P (for 625/50 system of Betacam SX)
4-2. TAPE Maintenance Mode (M0)
4-2-7. SERVO ADJUST Mode (A00-01)
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