3745 FRU Exchange Procedure
Channel Tailgate Exchange Procedure
Removal Procedure
1. Ask the customer to disable the channel
related to the suspected channel tailgate
connector. Also inform him that the 3745
is to be powered OFF.
2. Press Power Off on the control panel.
3. Open the front and rear door.
4. Switch CB1 OFF. Refer to Figure 4-129.
5. Locate the channel tailgate. Refer to
Figure 4-131 on page 4-97.
6. Remove the basic board grid. (two screws
must be removed). Refer to Figure 4-131 on
page 4-97.
7. At the channel tailgate connectors, set all the
select out bypass switches to Bypass. Refer
to Figure 4-130.
8. Disconnect the channel bus and tag cables
from the channel tailgate connector to be
removed.
9. In order to allow the customer to use the
channel during the repair time, you must
connect the cables together or to the termina-
tors.
10. Remove the two screws which maintain the
channel tailgate connector. See note.
1
11. At the Basic board rear side disconnect the
corresponding flat cables by loosening the
retention screw. These parts are fragile.
Handle them with care.
12. Remove the connector flat cables assembly
from the channel tailgate rack.
Figure 4-129. CB1 Location
Tag
B u s
Sel ect out
B y pas s S wi t ch
B y p a s s
Nor mal
Figure
4-130. Select Out Switch
1
An easier access to a lower located channel tailgate connector can be obtained by removing the upper one(s). For each channel
tailgate connector use the steps 10 to 12. Do not disconnect the channel bus and tag cables from the connectors.
4-96
3745 Models 130 to 17A: MIP
Summary of Contents for 3745 130
Page 2: ......
Page 10: ...viii 3745 Models 130 to 17A MIP ...
Page 16: ...xiv 3745 Models 130 to 17A MIP ...
Page 23: ...Safety Figure 0 2 Ground Wire Connection on Controller Expansion Safety xxi ...
Page 46: ...Safety xliv 3745 Models 130 to 17A MIP ...
Page 47: ...Safety Safety xlv ...
Page 48: ...Safety xlvi 3745 Models 130 to 17A MIP ...
Page 49: ...Safety Safety xlvii ...
Page 50: ...Safety xlviii 3745 Models 130 to 17A MIP ...
Page 51: ...Safety Safety xlix ...
Page 52: ...Safety l 3745 Models 130 to 17A MIP ...
Page 53: ...Safety Safety li ...
Page 54: ...Safety lii 3745 Models 130 to 17A MIP ...
Page 55: ...Safety Safety liii ...
Page 56: ...Safety liv 3745 Models 130 to 17A MIP ...
Page 57: ...Safety Safety lv ...
Page 58: ...Safety lvi 3745 Models 130 to 17A MIP ...
Page 66: ...Safety lxiv 3745 Models 130 to 17A MIP ...
Page 68: ...Preface lxvi 3745 Models 130 to 17A MIP ...
Page 70: ...Amendments lxviii 3745 Models 130 to 17A MIP ...
Page 154: ...3745 MAPs 1 84 3745 Models 130 to 17A MIP ...
Page 200: ...Service Processor MAPs 2 46 3745 Models 130 to 17A MIP ...
Page 226: ...Diagnostics 3 26 3745 Models 130 to 17A MIP ...
Page 253: ...FRU Exchange Location 01S Figure 4 31 3745 EPO Chapter 4 3745 FRU Exchange 4 27 ...
Page 332: ...CE leaving procedure 4 106 3745 Models 130 to 17A MIP ...
Page 338: ...Maintenance Aids A 6 3745 Models 130 to 17A MIP ...
Page 354: ...Abbreviation X 6 3745 Models 130 to 17A MIP ...
Page 359: ......
Page 360: ...IBM Part Number 03F5017 Printed in Denmark by IBM Danmark A S ð3F5ð17 SY33 2ð7ð ð9 ...