DEC VT1000 Service Manual page 55

Table 3–6 (Cont.) Troubleshooting the Terminal
Symptom Probable Cause
Screen Display Problems
Horizontal or Monitor.
vertical line
appears on screen.
Screen display Nearby devices
distorted or are creating
jittery. electrical
interference.
Monitor is out of
alignment.
System logic
board.
No bell tone or Keyboard speaker
keyclick. transducer.
In local mode, Alternate
the terminal character set
displays different selected.
characters than
Wrong keyboard
those typed.
language selected.
Keyboard.
System logic
board.
While on-line
Transmit and
with the host, receive speeds are
the terminal incorrect.
displays different
Bits per character
characters than
or parity setting
those typed. (The
is wrong.
terminal works in
local mode.)
Stop bits setting
is incorrect.
3 Section numbers follow the solution.
Troubleshooting 47
3
Solution
See the monitor's service guide.
Move the terminal away from the
electrical devices.
See the monitor's service guide.
Replace the system logic board (4.6).
Replace the keyboard (4.9).
Select the correct character set by
using the Customize General dialog
box.
Select the correct keyboard language
by using the Customize Keyboard
dialog box.
Replace the keyboard (4.9).
Replace the system logic board (4.6).
Set the speeds to match the host
using the Customize Host Port or
Customize Printer Port dialog box.
Set the Word Size or Parity setting
to match the host, using the
Customize Host Port or Customize
Printer Port dialog box.
Set the Stop Bits number to match
the host, using the Customize Host
Port or Customize Printer Port
dialog box.