Sony HDW-F500 Maintenance Manual page 184

4-4. Alternative Maintenance Menu
4-4-2. DT SYSTEM Adjustment
[F5] (HEAD OFFSET) Key :
Measures the bimorph drive voltage with reference to the
tape when the DT head is located at its reference position.
Checks that the unit is continuously trace the correct track
(DT Lock) by the segment signal acquired from the
processor playback system.
(1) Press [F5] key from DT ADJUST menu to enter to
HEAD OFFSET LEVEL menu.
(2) Set the alignment tape HR5-1A to the unit. The unit
automatically starts the adjustment. During the
process of adjustment, message ADJUSTING....
continues to appear on the display and the unit enters
to PLAY mode.
(3) When the adjustment normally completed, message
ADJUST COMPLETE appears on the display.
(4) To save the adjustment data to NVRAM, press [F1]
key to execute NVRAM CTL command.
(5) Press [F10] (EXIT) key to end the adjustment. The
alignment tape is automatically ejected.
If message #ADJUST INCOMPLETE# appeared on the
display, check the following:
Indicated A/B-ch : Bimorph drive voltage on A
Indicated C/D-ch : Bimorph drive voltage on C
Indicated A/B-ch C/D-ch : The unit failed to achieve
• Check the strain gauge signal detect system
(advance head, DR-205A/MB-863/HN board, slip
ring, wire harness and the like).
• Check the DT driver system (SS-88/DT-34C/
MB-863/DR-205A/HN boards, wire harness, slip
ring, advance head and the like).
• Check the segment signal playback system
(processor playback system, MB-863/SS-88 boards
and the like).
• Check the servo system.
• Check the alignment tape HR5-1A.
• If there is any possibility of miss-operation, perform
re-adjustment.
4-68
and B-ch. is out of specifica-
tion, or the unit failed to
achieve DT Lock on A and B-
ch.
and D-ch. is out of specifica-
tion, or the unit failed to
achieve DT Lock on C and D-
ch.
servo lock when adjustment.
CH.COND
N V R A M
C T L
DT ADJU ST
HEA D OF FSET LEVE L
SE T
C A P S T N
H R5-1 A AL IGNM ENT TAPE
F G L V L
D R I V E
G A I N
H E A D
O F F S E T
D T AD J
TCR 00:0 0:00 :02
E X I T
HDW-F500E MMP1