Tools And Measuring Equipment; Adjustment; Measurement - Sony OA-D32W Service Manual

Head Compliance
Identify as "A" the position where the
stable reading can be obtained. (Refer to
Fig. 5-2 (b) )
'-........~
\
M~8SUring
Point
~
Fan·Shaped Gauge
(a) Pad Pressure Measuring Method
(x) Distance between surfaces of head and pad.
(b)
(e)
Fig.
5·2
Pad Pressure Adjustment
-40-
e. Put down the pad arm below point "A"
until the point just before the pad arm
touches the head, and then read the rising
peak value at point "B". (Refer to Fig. 5-2
(b»
f. Check if the reading is within 11 ±1.S g
specified for adjustment.
5-2-3. Adjustment
a. Unless the reading is out of 11
±
1.5 g,
change the spring set-position.
b. If the reading is in excess of 12.5 g, move
the position toward "A". If the reading is
less than 9.5 g, move the position toward
"B". Do not change position "C" where
the string is set. (Refer to Fig. 5-2 (c) )
5-3. HEAD COMPLIANCE
Disassemble the following parts and then perform
the measurment and adjustment.
a. Main Cover (Refer to
4-5)
5-3-1. Tools and Measuring Equipment
a. Oscilloscope
b. MFD Checker II
ED
c. Level Disk (OR-D46VA)
_ d. Level Disk (OR-D46WA)
e. Pad weight
ED
f.
e
2 mm Driver
g. Rotary Knob
h. Hexagon Wrench Torque Driver
5-3-2. Measurement
a. Connect the disk drive to the MFD Checker
II. (Refer to Fig. 2-1)"
b. Insert the level disk in place, and move the
head onto TRK 79.
c. Set the HD LOAD swhch on the MFD
Checker II to "ON".
d. Attach the rotary knob onto the stepping
motor shaft and fix it with a hexagon
wrench torque driver. (Refer to Fig. 4-13
(a) )
e. Write "2F" into the disk and check if the
amplifier output waveform at CNIO?-I is
satisfactory.