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APPENDIX
APPENDIX
APPENDIX
81
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TABLE
OF
CONTENTS
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I
N
T
R O D U C
T
I
O N
DESIGN
SPECIFICATIONS
U N
P
A
C
K
IIN
G
A
N D
N
5
POWER
AND
SIGNAL
HIRING
POWER-UP PERFORMANCE CHECK
ERROR CODES
'
I
O N
6
I
N
S
T
A L L A
T
ACCESS TO THE
MAIN LOGIC
BOARD
IN DISPLAY UNIT
ACCESS
TO THE
KBD
LOGIC
BOARD
KEYCLICK
AND
BELL
VOLYME
ADJUSTMENT
JUMPERS
MLB JUMPERS
KBD JUMPERS'
I
N
E R
F
A
C E
I
N
F
O R M
A
T
V.24/RS-232-C
SIGNAL LEVELS
T
I
O N
1/0
coNNEcToR
PIN
ASSIGNMENTS
PRINTER coNNEcToR
PIN
ASSIGNMENTS
T
S E
U
P
SET-UP
MODE
STRUCTURE
SHITCH
GROUP
C.3
&
4 (STATUS
LINE)
-
M O D
E
8
USER
STATUS, SHITCH
3:1
STA
STA
STA
STA
STA
"US
LINE-
CURSOR
POSITION,
SWITCH
3:2
"US
LINE-
TIME,
SHITCH
3:3
"US
LINE-
TERMINAL
MODE, SWITCH
3:4
"US
LINE-
PRINTER STATUS,
SWITCH
4.1
-US
LINE-
TRANSMIT
MODE,
SNITCH
4.2~
T
LINE-
INTERFACE MONITOR, SHITCH
4.3
STA
US
STALTS
LINE-
BUFFER
%
TRANSPARENCY MODE-
GROUP
C,
SNITCH
2:2
CUSTOM
MODE
SET-UP
ET
N
E R
A L
B
L
O C
K
D
I
A
G
R
A
M
D E
S
C R
I
P
T
I
O N
G E
MICRO-PROCESSOR
CONTROL
UNIT
I
DISPLAY
REFRESH
MEMORY
SYNCHRONIZATION
GENERATOR
O
VIDEO
GENERATOR
INPUT/OUTPUT INTERFACE
KEYBOARD SYSTEM
MONITOR ASSEMBLY
MONITOR
CONTROL BOARD
Line output stage
Line
driver
Line osci11ator combination
Fieïd
timebase
Video
output
stage
Picture
tube
suppïies
Dynamic
focus
Picture
shift
POWER
SUPPLY
UNIT
V
I
SE
R
C E
POWER-UP
SELF TEST
ERROR CODES
REMEDY
Error
code
2
Error
code
3
Error
code
6
FIELD
SELF TEST DESCRIPTION
HANDLING
INSTRUCTION,
FIRST
VERSION
Operating
instruction,
BURN
IN
TEST
Operating
instruction,
MANUEL
TEST
MODE
14-16
KEYBOARD
SELF TEST
MONITOR CONTROL
BOARD
TROUBLESHOOTING
Monitor
eïectronic
troubleshooting hints
MONITOR ADJUSTMENTS
ADJUSTMENT
INSTRUCTION
18-19
APPENDIX
1(8
2(8
sås
418
51
64
APPENDIX
71
4440
M_B
CPU,
Circuit
Diagram
4440
M;B
CRTC,
Circuit
Diagram
4440
M_B
ATTRIBUTE,
Circuit
Diagram
4440
M-B
ADMU,
Circuit
Diagram
4440
M_B CHAR-MEMORY,
Circuit
Diagram
4440
M-B
MLB
ARBT-MEMORY,
Circuit
Diagram
4440
MLB CARGEN,
Circuit
Diagram
4440
M-B
I/O,
Circuit
Diagram
APPENDIX
9
4440 M-B,
Circuit
Board
0
APPENDIX 10
i
4440
KBD,
Circuit
Diagram
APPENDIX
APPENDIX
APPENDIX
APPENDIX
APPENDIX
APPENDIX
APPENDIX
4440
KBD,
Circuit
Diagram
4440
PONER
SUPPLY,
Circuit
Diagram
4440
POWER
SUPPLY,
Circuit
Board
4440
MONITOR,
Circuit
Diagram
4440
MONITOR,
Circuit
Diagram
4440
MONITOR,
Circuit
Board
4440
INTERCONNECTION DIAGRAM
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