ISS 1 , SECTION 5 1 8-4 1 1 - 1 00
REI'IOVE FIRST
CONNECT HAND
4B4A KTU FROI'I
TEST SET TO
JS
TERI'IINALS
PLUG HK-1 4
TURN SWITCH
INTO JS
TO ON
All VOLTAGE
NO
CHECK FUSING
LINK LAI'IP
NO
SYSTEI'I I'IAY BE
SUPPLY LAI'IPS
AND POWER
ON
BUSY - IF NOT ,
ON
CONNECTIONS
REPLACE 4BSA KTU
RTC LAI'IP
NO
REPLACE 4BSA KTU,
ON
4B5A KTU OR
POWER SUPPLY
DIAL 05
SCN LAI'IP
NO
REPLACE
FLASHING
4B5A KTU
DIGIT
1
SHOWS
NO
TURN BOARD OFF .
RECHECK STATUS
ON VISUAL
LAI'IPS . RESTART
DISPLAY
PROCEDURE .
REI'IOVE 4B4A AND
A LAI'IP
NO
4BBA KTUs ONE AT
ON
A TII'IE UNTIL LAMP
LIGHTS. REPLACE
DEFECTIVE KTU
READY FOR
YES
TESTS
Fig. 1 9-HK- 1 4 Diagnostic Circuit Pack Preparation
Page 45
BSP S18-411-100-i01 1978-08-4S.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 15, 2012
21:11:33