Teletype 43K001/AAA, Repair Manual

Page: 16 / 82

I.
'
525,2-2
B. TROUBLESHOOTING
1. 43K101 KEYBOARD TROUBLESHOOTING
TROUBLESHOOTING GUIDE
QUESTION
YES
1. Does failure involve either an
Go to 2.
operational control or a station
indicator?
2. With power applied are any of the Go to 5.
communications mode indicators;
LOCAL (LOCAL TALK), DATA,
TERM READY (AUTO ANSW) lit?
3. Is ALARM indicator lit (paper Go to 20.
installed, cover closed)?
4. Do any indicators light under any Go to 6.
conditions, ie, depressing indicator
keyswitch, ALARM indicator on
paper- out, LOCAL (LOCAL TALK)
on by depressing PRINTER TEST
key?
5. Do each of the three communica- Go to 9.
tions mode keyswitch indicators
light when its keyswitch is depressed?
6. Does LOCAL (LOCAL-TALK) indi- Go to 7.
cator light when its keyswitch is
depressed?
6a. Does LOCAL (LOCAL-TALK) indi- Go to 20.
cator light when PRINTER TEST
key
is
depressed?
7.
Does DATA indicator light or flash Go to S.
when its keyswitch is depressed?
7a. Does DATA indicator light under Go to 20.
any conditions, ie, loop-back, auto-
matically from TERM READY
(AUTO ANSW) mode?
s.
Does TERM READY (AUTO ANSW) Go to 9.
indicator light when its keyswitch
is depressed following depression of
LOCAL (LOCAL-TALK) keyswitch?
Sa. Does TERM READY (AUTO ANSW) Go to 20.
indicator light when power to the
set is first turned on (no alarm con-
ditions)?
9.
Does INTRPT indicator flash when Go to 10.
INTRPT keyswitch is depressed while
in loop-back mode?
NO
Go to 12.
Go to 3.
Go to 4.
Go to 1S.
Go to 6.
Go to 6a.
Go to 1Sa.
Go to 7a.
Go to 1Sa.
Go to Sa.
Go to lSa.
Go to 9a.