
8-9 Front Panel Assembly
Removal and Replacement Procedures For 3739B and 3739C
8-24
PN: 10410-00306 Rev. F
VectorStar ME7838 Series MM
Replacement Procedure
Common Disassembly Procedures
1.
Power down the VNA and Test Set and disconnect the cables between the VNA, Test Set, and Modules.
Move the Test Set to the repair area.
2.
Remove the top cover as described in
above.
Front Panel Removal
3.
Disconnect the following cables from their destination connectors. Note that these cables are included
with the replacement Front Panel.
a.
LED Power – Disconnect at A1 PCB Connector P7.
b.
Port 1 LED – Disconnect at A1 PCB Connector P13.
c.
Port 2 LED – Disconnect at A1 PCB Connector P12.
d.
Port 1 Power / Control – Disconnect at A1 PCB Connector J2.
e.
Port 2 Power / Control – Disconnect at A1 PCB Connector J3.
1 – Front Panel Assembly – Viewed from Inside Chassis
– Power Switch and Port 1 on right – Port 2 and Ground
on left.
Cable Harnesses Provided
2 – Power LED Cable Harness
3 – Port 1 LED Cable Harness
4 – Port 1 Power Cable Harness
5 – Port 2 Power Cable Harness
6 – Port 1 LED Cable Harness
7 – Ground Plug Cable Harness
Disconnect These Cables – Top Row
8 – RF Connector, Semi-Rigid Coaxial Cable
9 – LO1 Connector, Semi-Rigid Coaxial Cable and 6 dB
attenuator
10 – LO2 Connector, Semi-Rigid Coaxial Cable and 6 dB
attenuator
Disconnect Switch
11 – Power Switch and Cable Harness Assembly –
Remove two screws to detach power switch from Panel.
Disconnect These Cables – Port 1
12 – Port 1 RF Connector, Semi-Rigid Coaxial Cable
13 – Port 1 LO Connector, Semi-Rigid Coaxial Cable
14 – Port 1 Test Connector, Flexible Coaxial Cable
15 – Port 1 Ref Connector, Flexible Coaxial Cable
Disconnect These Cables – Port 2
16 – Port 2 LO Connector, Semi-Rigid Coaxial Cable
17 – Port 2 RF Connector, Semi-Rigid Coaxial Cable
18 – Port 2 Ref Connector, Flexible Coaxial Cable
19 – Port 2 Test Connector, Flexible Coaxial Cable
Power Supply and A1 PCB
20 – Power Supply Module – 3-40-183
21 – A1 Bias Control PCB Assembly – ND73163 –
3-72143-3
22 – A1 PCB Connector J2 – Connects to Port 1
23 – A1 PCB Connector J3 – Connects to Port 2
Figure 8-11.
Front Panel Assembly – View from inside chassis (2 of 2)
Summary of Contents for VectorStar ME7838 Series
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