IBM 3278 Series

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1 1 2
MAP 01
Terminal Failure MAP
PAGE 3 OF 13
011
Go To Map 02, Entry Point A.
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Go To Map 05, Entry Point A.
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Is light 3 above power ON/OFF switch on? (If
very dim use N path.) See Fig 4-1, 2 for
location)
N
014
Verify that the power on switch is on, line power
cable plugged in an active outlet and seated at
the primary
power box.
Are above conditions correct?
I ~!~ .nd ve,",
·016
Switch unit off.
Verify Fuse F1 in main power box (Figure 4--3).
Did fuse fail?
N
017
Verify low voltage supply fuses (F2, F3, F5,
F6).
(See fuse locator Figure 4--11).
Are all fuses good?
1 1
1 054
E F G H
SY27·2510-6
(1/81) 2·01·3