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Exchange Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
List of 3745 FRUs .................................. 4-2
FRU Physical Locations ................................ 4-3
3745 Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Basic Board, Cards, Connectors, and Crossovers ............... 4-5
MOSS Board, Cards, and Connectors ..................... 4-11
LIC Board Type 1 ................................. 4-13
LIC Board Type 2 ................................. 4-13
LIC Board Type 3 ................................. 4-14
DMUX and SMUX Packaging .......................... 4-14
LIC Board Type 1 Packaging for LICs Type 1 to 4 .............. 4-15
LIC Board Type 2 Packaging for LIC Type 5 ................. 4-18
LIC Board Type 2 Packaging for LIC Type 6 (Low Speed) ......... 4-19
LIC Board Type 2 Packaging for LIC Type 6 (High Speed) ......... 4-20
LIC Board Type 3 Packaging for LIC Types 1 to 4 .............. 4-21
Ethernet Lines Tailgate .............................. 4-22
High Speed Lines Tailgate ............................ 4-23
Token-Ring Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
Channel Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Console Operator Tailgate For 3745 Models 1X0 .............. 4-26
Console Operator Tailgate for 3745 Model 17A ................ 4-26
EPO Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
3745 Control Panel ................................ 4-28
Flexible Diskette Drive .............................. 4-29
Hard Disk Drive .................................. 4-29
Primary Power Box ................................ 4-30
Power Supply 1 .................................. 4-31
3745 Power Supply Cross Reference ..................... 4-31
Power Supply 2 .................................. 4-32
Fan 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
Fan 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
3745 FRU Exchange Procedures ......................... 4-34
Card Exchange Procedure ............................ 4-34
DCREG Exchange Procedure .......................... 4-38
DMUX Exchange Procedure ........................... 4-39
SMUXA/B Exchange Procedure ......................... 4-41
LIC Exchange Procedure ............................. 4-44
Control Panel Exchange Procedure ....................... 4-46
Battery Exchange Procedure .......................... 4-48
Fan 1 Exchange Procedure ........................... 4-50
Fan 2 Exchange Procedure ........................... 4-51
FDD Exchange Procedure ............................ 4-52
HDD Exchange Procedure ............................ 4-56
TERMC/TERMR Exchange Procedure ..................... 4-61
TERMD/TERMI Exchange Procedure ..................... 4-62
ESS Tailgate Exchange Procedure ....................... 4-64
PS1 Exchange Procedure ............................ 4-67
PS2 and Primary Power Box Exchange Procedure .............. 4-69
EPO Exchange Procedure ............................ 4-73
Basic Board Exchange Procedure ....................... 4-77
LIC Board Type 1 and 3 Exchange Procedure ................ 4-84
LIC Board Type 2 Exchange Procedure .................... 4-88
MOSS Board Exchange Procedure ....................... 4-92
Channel Tailgate Exchange Procedure ..................... 4-96
vi 3745 Models 130 to 17A: MIP