Tandy 2000 Service Manual page 401

F-
\<\
JtJoJ
TFBI4
(
I}IDEX
)
TPAg
/TPAI0
(
USE DIFF'ERENTIAL
FIeaC
Azimuth
f
)
Equiprnent
CE TESIET
CE Diskette
Oscilloscope
2)
Check procedure
2)
-I
Connect
CE
Tester
to
Drive then
turn-on
2) -2
2) -3
2) -4
2
)
-5
2\ -6
l\
l-
.':
n 5
i-tRr
)
\
*v
I
power
switch.
Turn on
motor.
Select
drive
and
load
CE
diskette.
Seek
to
TK5B.
Read
azimuth waveform
using oscilloscoPe.
Trigger: EXT -INDEX
(DC
+)
(T"BI4)
Signal : CH1 TPA9
(AC,
Normal)
cH2
- TpA10 (.Ac,
rnverted)
Add
l4oce
Acceptable
when
adjusted waveforn
within
following
range
\n
IJ
^
|J=L
/,1 | \
\v
l
Scec::ica::c
100
('ta-
-
D
It
t,'t-r\
l+lxl
\
*!.J
I
*
lef
lv
ra1-tt
.-a J
:-l
\iv
F'igure
8
)jo*-g
: