Normal Operation - Sony OA-D32W Service Manual

Normal· Operation
Procedure
Step Operation
1
Power On
1. The head automatically returns to TRK 00 and stops
there.
2. The disk motor remains stopped.
2
Drive Select Check after checked,
1. The TRK 00, WP, and DSKCHG indicators light only
the disk drive is to be kept
when the DRIVE SELECT switch on the MFD Checker
selected. D and the slide switch (S 1 0
1)
on the disk drive are set as
follows:
MFD Checker
n
Disk drive
1
2
IS101)
OFF OFF 1
ON OFF
2
OFF ON 3
ON ON 4
C?therwise, these indicators go out.
3
Operation during CASSETTE IN 1. When the cassette is inserted, the motor is rotating and
(Alignment disk is to be inserted.)
the plunger is pulled out. The head is loaded and un-
loaded in sequence. The motor then stops operation.
4 MOTOR ON switch on
1. The motor rotates. (The INDEX indicator on the MFD
Checker II blinks.)
2. The TRK 00, WRTPRT, RDY, and DSKCHG indicators
light. (The RDY indicator, however, lights in about 1.5
seconds after the disk is inserted.)
5
CHGRST switch on
1. The DSK CHG. indicator goes out at the moment when
the CHG RST switch is pressed.
6
HD LOAD switch on
mJ
1. The plunger Solenoid is set on, and the pad lifts down.
IE
2. The plunger Solenoid is set active and the head lifts
down.
3. The clearance between the HL arm and pad arm is set as
shown in Fig. 5-9.
7
Stepping 1. When the STEP IN switch is pressed, the head is con-
tinuously stepped in until it arrives at TRK 79.
When the STEP OUT switch is pressed, the head is
continuously stepped out until it arrives at TRK 00.
2. When the head is set to any track other than TRK 00,
the TRK 00 indicator does not ligh(
8
Track positioning
1. Such a Cat's eye pattern signal as slivwn in Fig. 3-1 (a)
can be obtained at CNI07-1 on the disk drive when the
head accesses TRK 20, TRK 30 or TRK 50. The oscil-
loscope is triggered by the signal at TP-5 of the MFD
Checker II.
Note:
Such a signal as shown
in
Fig. 3-1 (b) can be obtained when the
head accesses TRK 40.
Em
2. SIDE SELECT switch to side 1. such a Cat's eye pattern
signal as shown Fig. 3-1 (b) can be obtained at CN 107-1
on the disk drive. When the head accesses TRK 40.
3. Set amplitude L in Fig. 3-1 (a) to 5 divisions, and then
read amplitude R in Fig. 3-1 (a).
Calculate the OFF TRACK value, refering to Table 3-1
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