3745 MAPs
Power MAP 3935: Power OFF not Possible in Host Mode
Symptom Explanation Conditions That Could Cause This Symptom
Power OFF is not possible in host
mode Another connected host is still power ON.
The power control is not in host mode.
Host or host cable problem.
PCC card.
Attention
Power may be present when nothing is dis-
played on the control panel.
001
Is the host (that which initiated the command)
the last host connected to be power ON?
Yes No
002
The 3745 will be powered OFF only by
the last connected host.
003
When the power control is in host mode, a 1 is
displayed on the control panel.
Is the power control in host mode?
Yes No
004
Set the power control to host mode.
Using Power Control, scroll till the
value is 1.
Press Validate.
Power OFF in host mode.
Is power OFF now possible in host
mode?
Yes No
005
Go to Step 007.
006
Go to “CE Leaving Procedure” on
page 4-102.
007
Set the power control to local mode.
Using power control, scroll till the value
is 3.
Press Validate.
Power OFF.
(Step 007 continues)
007 (continued)
Does the Power On Indicator now go OFF?
Yes No
008
Go to “Power MAP 3945: Power OFF not
Possible in Local Mode” on page 2-26.
009
Check for 24 V between the frame ground and
Power Hold line on EPO 01S on:
Any J Connector pin 5 if one is free
(J5/6/7/8)
or
The back of any host connector if the four
are used.
Refer to Figure 2-4 and Figure 4-2 on
page 4-4.
Pin 1 Pin 4
Pin 3 Pin 6
J5 J6 J7 J8
Figure 2-4. EPO Location 01S
Is the power hold dropped?
Yes No
010
There is a host problem or an external host
cable problem.
If no problem is found, contact your support
structure, refer to “Contacting Support” on
page A-1.
011
Exchange the PCC card. Go to “Exchange
Precautions” on page 4-1
Chapter 2. Map for FRU Isolation 2-25