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START
Normal Conditions After Power On (2-1):
1.
System Available on.
2.
Cursor location equal to 01-02.
3.
Normal status line (no error codes).
4.
Normal size screen and stable.
5.
All characters and/ or indicators correctly displayed. Raster not visible.
If a sign-on menu is displayed, select the on-line test (600) to operate in free key mode.
Notes:
1. The ai<1rm sounds when power on diagnostics are complete.
2. Clockwise (forward) rotation of the control knob increases the volume.
MAP Chart 1
Symptom
Checks or Comments
Repair Action
p
s c
0
c
0
Rolhng screen-
Horiz. roll wtll appear as 2 unstable
Display unit or planar or 1/0
w
R N
Horizontal or vertical
horiz. bands where cursor and
assembly (240, 347, 348)
E E
D
status line should be.
R E I
Bright oversize raster and vertical
Retrace line out of focus and
Display unit (240)
N
T
band left center
Brightness control inoperative.
0
I
N N
0
Everything except status line
Displays only in the center
Display unit (240)
0
N
displays as a line of horizontal
Status line displayed above normal
D T
s
dashes
position
I
A B N
Status line normal. Cursor and
Display normal on all other lines
Display unit (2401
G L
0
characters displayed as multiple
N A
T
horizontal dashes in row 1
0
N
Raster displayed
Cursor and status line normal (2-1 ).
Display unit (240)
s
K N
Display station operates normally
T
0
I
R
Fuzzy (out of focus), narrow, off
Adjustment/Display unit
c
M
center, or tilted
1230, 240)
s
A
L
Only a horizontal line is displayed
Line may be solid or broken
Display unit (240)
c
0
w
Only a vertical line is displayed
Line may be solid or broken
Display unit (240)
Line may not be straight
M
I
p
T
Wrong display size vertically
Characters display correctly
Ad1ustment/ Display unit
L
H
1230, 240)
E
T
p
No cursor
Characters display from keyboard
Planar (347)
E
0
OK
w
T
E
Status line displayed as horizontal
Cursor position displayed as horiz.
Display unit (240)
0
R
lines
line at bottom of screen
Cursor on the right
System Available on
Planar (347)
A
0
L
N
Normal Status line not displayed
Extraneous data or missing dots on
Planar (347) DISplay (240)
A
correctly (2-1)
the screen or wrong characters
I
I
0 assembly (348)
R
displayed
M
--
- -
-
-
- -
- -
-
-~·
- - - - -
-
-
- - -
- -
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Symptom
Checks or Comments
Repair Action
Wrong display size (all sides)
+15 Vdc is too low or too high
Power supply board 1345)
Unstable information
Ripple on the +15 Vdc
Power supply board (345)
Vertical
Jitter
All other conditions normal after
Power supply transformer
power on (2-1)
1344)
Continuous diagnostic loop
Loops on ERROR status line and
Planar/1/0 a55embly (347,
alarm sounds with CE switch set off 348)
(422)
Keyboard ID field equals KU or LU
If LU is displayed with the keyboard
Keyboard/Planar (140, 347)
(520)
disconnected, replace the planar
(347). Check keyboard cable.
Stuck key field equals 1 1520)
Keyboard/Planar (140. 347)
Line check counter is counting (520)
System Available on or flashing and
Power supply board 1345)
cursor on right
No System Available or system
Check the -5 Vdc (311.)
Fuse 3 or power supply
available flashing.
board 1311) (345)
(Cursor on the right)
/
Check the system network
Planar (347)
Check the system configuration (2
I
I
0 assembly (34.8)
stations may be at the same
Power supply board (345)
address)
Check the system cable
Missing dots on displayed
Planar (347)
characters
Continuous or intermittent resetting
Attempt to sign on. Work station
Planar (347)
screen. Cursor may be at right, left.
will begin to loop.
Power supply board (345)
or bottom.
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