
8
Digital
Control
Troubleshooting
INTRODUCTION
Use
this
pro cedure
only
if
y
ou
ha
v
e
follo
w
ed
the
pro cedures
in
the
T
r
oublesho
oting
c
hapter,
and
b elieve
the
problem
to
b e
in
the
digital
con
trol
group.
This
pro cedure
is
designed
to
let
y
ou
iden
tify
the
bad
assem
bly
within
the
digital
con
trol
group
in
the
shortest
p ossible
time.
Whenev
er
an
assem
bly
is
replaced
in
this
pro cedure,
refer
to
the
T
able
of
R
elate
d
Servic
e
Pr
o
c
e
dur
es
in
the
Post-R
ep
air
Pr
o
c
e
dur
es
c
hapter
in
this
man
ual.
Figure
8-1
sho
ws
the
digital
con
trol
group
in
simplied
blo
c
k
diagram
form.
The
follo
wing
assem
blies
make
up
the
digital
con
trol
group:
A1
CPU
A30
F
ron
t
Keyb oard
A32
I-BASIC
In
terface
A33
EXT
I/O
In
terface
A51
GSP
A52
LCD
(Liquid
Crystal
Display)
A53
FDD
Digital
Control
Troubleshooting
8-1
Содержание 4395A
Страница 10: ......
Страница 26: ......
Страница 34: ......
Страница 77: ...Figure 2 17 B R Magnitude Ratio Phase Dynamic Accuracy Test Setup 2 Performance Tests 2 43 ...
Страница 167: ...Figure 5 1 Adjustment Hardware Setup Adjustments 5 5 ...
Страница 186: ...Figure 5 13 Receiver Gain Adjustment Location 5 24 Adjustments ...
Страница 190: ...Figure 5 16 Receiver Flatness Adjustment Setup 1 MHz 5 28 Adjustments ...
Страница 194: ...Figure 5 20 DC Bias Adjustment Setup 2 5 32 Adjustments ...
Страница 196: ...Figure 6 1 Troubleshooting Organization 6 2 Troubleshooting ...
Страница 206: ...Figure 7 1 Power Supply Lines Simplified Block Diagram 7 2 Power Supply Troubleshooting ...
Страница 212: ...Figure 7 5 A1 CPU Connector Locations 7 8 Power Supply Troubleshooting ...
Страница 220: ...Figure 8 1 Digital Control Group Simplified Block Diagram 8 2 Digital Control Troubleshooting ...
Страница 240: ...Figure 10 1 Top View Major Assemblies 10 4 Replaceable Parts ...
Страница 292: ...Table A 2 Manual Changes by Firmware Version Version Make Manual Changes A 2 Manual Changes ...
Страница 303: ...Change 6 Change the Replaceable Parts as following Figure A 10 Top View Major Assemblies Manual Changes A 13 ...
Страница 308: ......
Страница 311: ...Figure B 1 Power Cable Supplied Power Requirement B 3 ...
Страница 312: ......
Страница 342: ......