NEC FD1165 - Azimuth Check; Adjusting Head Radial Alignment; Head Azimuth Oscilloscope Settings

BACKWARD
FORWARD
ADJUSTING DRIVER
BASE FRAME
Figure 5-3 Adjusting Head Radial Alignment
5.4.2 Azimuth Check
Carriage assembly replacement is usually required to correct
Azimuth error. Set the oscilloscope to the settings in
Table 5-4, then use the following procedure to check· for
Azimuth error.
Table 5-4 Head Azimuth Oscilloscope Settings
ITEM
SETTING
Channel
1
Normal
Channel 2
Inverted
Mode
Add
Inputs
Ac
Input range
50
mV/division
Test points
TP8
and TP9
Trigger
TP7
(dual-sided)
TPlO
(single-sided)
Time base
0.5 ms/division
Probes xl
5-6