Datron 1061 Calibration And Servicing Handbook page 5

Section
¡i¡
Title
Page
.
.42
3.9
FRONTPCBASSEMBLY
..
3.9.1
Analog
lnput
Signals
3.9.2
Display Signals
42
42
42
43
45
45
45
46
46
46
47
47
47
48
48
48
48
48
48
51
51
51
51
51
51
52
53
54
55
57
3.9.3
Keyboard
Data Encode.
3.9.4
Keyboard LED Data
Decode. .
'
3.10
DISPLAY DRIVER ASSEMBLY
. .
.
3.10.1
Write Mode
3.10.2
Read
Mode.
3.11
IEEE DIGITAL INTERFACE
. . . . . .
.
3.11.1
ROM
Circuit.
3.11.2
lnterface Circuit
3.12
BCD
DIGITAL INTERFACE.
. . .
.
3.12.1
RAM/ROM
Circuit
3.12.2
lnterface
Circuit
3.13
REAR (POWER SUPPLY)
PCB
ASSEMBLY . .
.
3.13.1
General
....
3.13.2
180V
Supply
3.13.3
5V Supply
3.13.4
+15V Supply
3.14
SELF
TEST SEOUENCE
4
o
INTERNAL
ADJUSTMENT PROCEDURES
. . .
.
4.1
ALTERATION
OF
LINE VOLTAGE AND
FREOUENCY .
.
4.1.1
Changing Line Voltage
4.1.2
Changing
Line Frequency .
.
.
4.2
BATTERY REPLACEMENT.
.
.
4.3
POST.REPA¡R PROCEDURES
4.3.1
4.3.2
4.3.3
4.3.4
Basic
DC lnstrument
OhmsAssembly...
AC
Assembly
(Option
10).
.
AC
Assembly
(Option
121.
.
APPENDIX
1
ANALOG DATA LINE 'F.E.T.'PATTERNS