Chapter 4 Retrofitting Options
To Retrofit A6 High Stability Timebase Assembly (Options 001, 010, and
012)
4-12
Assembly-Level Service Guide
4
Procedure
1
Turn off the Counter and remove power cord.
2
Remove the cover.
See the section titled “To Remove the Cover” in Chapter 3 of this guide.
3
If you are retrofitting the Option 001 Medium Stability Timebase
Assembly, go to step 5.
If you are retrofitting the Option 010 High Stability or Option 012
Ultra-High Stability assembly, go to step 4 (the next step).
4
Plug the oven oscillator into the socket on A6 Timebase Support
Board, and secure the oven oscillator to A6 using the two Pozidriv
screws (H7) as shown in Figure 4-2.
5
Plug the oven oscillator into the socket on A6 Timebase Support
Board, and secure the oven oscillator to A6 using the two Pozidriv
screws (H7) as shown in Figure 4-2.
6
If you are retrofitting the Option 001 Medium Stability Timebase,
remove the jumper cap on P1 of A6 Timebase Support Board as
shown in Figure 4-2.
If you are retrofitting the Option 010 High Stability and Option
012 Ultra-High Stability timebases, DO NOT remove the jumper
cap on P1.
7
Mount A6 High Stability Timebase Assembly on the left side using
three TORX 10 screws (H1) as shown in Figure 4-2.
8
Plug the power supply assembly’s two-wire cable into the
three-prong connector (J2) on the high stability timebase
assembly as shown in Figure 4-2 (if the two-wire cable exists).
9
Connect A6 High Stability Timebase Assembly cable to connector
J9 on A1 Motherboard Assembly as shown in Figure 4-2.
Summary of Contents for 53131A
Page 1: ...Assembly Level Service Guide HP 53131A 132A 181A 225 MHz Counter ...
Page 2: ......
Page 14: ...Contents xii Assembly Level Service Guide ...
Page 22: ...Preface xx Assembly Level Service Guide ...
Page 23: ...1 Performance Tests Verifying Specifications ...
Page 97: ...2 Service ...
Page 149: ...3 Replacing Assemblies Disassembly and Reassembly ...
Page 173: ...4 Retrofitting Options ...
Page 191: ...5 Replaceable Parts ...
Page 201: ...6 Backdating Manual Changes ...
Page 218: ...Chapter 6 Backdating Backdating Specifications 6 18 Assembly Level Service Guide 6 ...
Page 219: ...7 HP 53131A 132A Specifications ...
Page 235: ...8 HP 53181A Specifications ...
Page 246: ...Chapter 8 HP 53181A Specifications General Information 8 12 Assembly Level Service Guide 8 ...
Page 252: ......
Page 254: ... Manual Part Number 53131 90039 Printed in U S A MARCH 1999 ...