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E4990A Parts Replacement
Procedure
2014 Oct 20




E4990A Disassembly Procedure Rev.

Keysight Technologies
TOOL AND FIXTURE LIST

PART NO. DESCRIPTION TORQUE VALUE / SET UP

T-10 Torque driver 3.5 lbin
T-10 Torque driver 9 lbin
T-15 Torque driver 14 lbin
T-20 Torque driver 21 lbin
5/8 Box Wrench 30.4 inlb
9/16 Box Wrench 30.4 inlb
5.5mm Box Torque driver 6 lbin
1.27mm Allen Key 2 lbin
5/16" Open End Wrench 9.5 lbin




REFERENCE DOCUMENTS
DOCUMENT NO. DESCRIPTION




TOOL LIST AND REFERENCE DOCUMENTS (1) E4990A Disassembly Procedure Rev. A

Keysight Technologies
TOOL AND FIXTURE LIST

PART NO. DESCRIPTION TORQUE VALUE / SET UP

T-384162 Cart Arm
T-384166 Front Overlay Installation Pin
T-384165 Protective Template for BNC assembly
T-384163 Cable holder of P/S cable
T-384186 Angle Support Block
T-386283 Wire Connector Head Removal Jig
80-5286 Roller Jig
1530-2247 Hubic Cart




REFERENCE DOCUMENTS
DOCUMENT NO. DESCRIPTION




TOOL LIST AND REFERENCE DOCUMENTS (2) E4990A Disassembly Procedure Rev. A

Keysight Technologies
Reverse Flow Dis-assembly Procedure Menu
Click the hyperlink below for any choice of dis-assembly procedure:
1. LCD
2. SSD
3. CPU Module (E5061-62180)
4. Display Board (E5061-66651)
5. LF Source Module (E4990-62007)
6. TRD Module (E4990-62005) & BNC Port Assembly (E4990-60102)
7. Source Module (E5061-62021)




DIS-ASSEMBLY PROCEDURE MENU (1) E4990A Disassembly Procedure Rev. A

Keysight Technologies
Reverse Flow Dis-assembly Procedure Menu
(cont'd)
Click the hyperlink below for any choice of dis-assembly procedure:
8. VRD Module (E4990-62008)
9. I/O Control Board (E4990-66653)
10. Analog Mother Board (E5061-66610)
11. Oven (Option 1E5)




DIS-ASSEMBLY PROCEDURE MENU (2) E4990A Disassembly Procedure Rev. A

Keysight Technologies
LCD
Dis-Assembly Procedure




Note:
1. Torque value shown in this document is only for reference and only used during
assembly.


LCD - DIS-ASSEMBLY PROCEDURE E4990A Disassembly Procedure Rev. A

Keysight Technologies
5 Remove cover
6 Remove trim strip




4 Remove
HANDLE ASSEMBLY T20

Remove 0515-1402 (4ea)
Remove 0515-1402 (4ea) 1
3 T15 M3.5L8 PAN
T15 M3.5L8 PAN

1 2 3 4 5 6 2 Remove foot (4ea)

LCD - LCD DIS-ASSEMBLY (1) E4990A Disassembly Procedure Rev. A

Keysight Technologies
Remove Front Panel
3
sub-assembly




1 Remove 0515-1382 (5ea)
T15 M3.5L6 Flat



4
Disconnect flat cable of
Front Panel Ass'y from
CPU Module


Remove 0515-2044 (2ea)
1 2 3 4 2
T20 M4L10 Flat
LCD - LCD DIS-ASSEMBLY (2) E4990A Disassembly Procedure Rev. A

Keysight Technologies
2 Disconnect
1 Open




1 2

LCD - LCD DIS-ASSEMBLY (3) E4990A Disassembly Procedure Rev. A

Keysight Technologies
Disconnect 1




2 Open




1 2

LCD - LCD DIS-ASSEMBLY (4) E4990A Disassembly Procedure Rev. A

Keysight Technologies
4 Disconnect 3 Remove cable cover
Remove Front Panel back
5
cover sub-assembly




Remove 0515-0430 (2ea)
2
T10 M3L6 PAN
1 Disconnect




1 2 3 4 5

LCD - LCD DIS-ASSEMBLY (5) E4990A Disassembly Procedure Rev. A

Keysight Technologies
3
Disconnect (2ea) Disconnect
2




1 Open (3ea)




1 2 3

LCD - LCD DIS-ASSEMBLY (6) E4990A Disassembly b30
Procedure Rev. A

Keysight Technologies
Remove 0515-0430 (4ea)
1
T10 M3L6 PAN




LCD sub-assembly 2


1 2

LCD - LCD DIS-ASSEMBLY (7) E4990A Disassembly b40
Procedure Rev. A

Keysight Technologies
SSD
Dis-Assembly Procedure




Note:
1. Torque value shown in this document is only for reference and only used during
assembly.


SSD - DIS-ASSEMBLY PROCEDURE E4990A Disassembly b60
Procedure Rev. A

Keysight Technologies
5 Remove cover




4 Remove
HANDLE ASSEMBLY T20

Remove 0515-1402 (4ea)
Remove 0515-1402 (4ea) 1
3 T15 M3.5L8 PAN
T15 M3.5L8 PAN

1 2 3 4 5 2 Remove foot (4ea)

SSD - SSD DIS-ASSEMBLY (1) E4990A Disassembly b70
Procedure Rev. A

Keysight Technologies
Cut cable ties (4ea) 2

1 Cut cable tie




1 2

SSD - SSD DIS-ASSEMBLY (2) E4990A Disassembly b80
Procedure Rev. A

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1 Disconnect (2ea)




1

SSD