Chapter 3 Replacing Assemblies

To Remove A6 High Stability Timebase Assembly (Options 001, 010, and

012)

A6 High Stability

Timebase Assembly

3

H2

 

H2

H2

 

LINE:

 

 

 

 

50/60/400Hz

 

AC

 

 

2

 

50/60Hz

 

 

3

 

 

VA60 100-120VAC

200-240VAC

Out

J9

1

 

 

 

 

 

 

 

!

 

 

 

 

 

 

10

 

 

 

 

 

 

MHz

 

I

 

Ref

 

 

 

 

 

In

 

 

 

 

N

 

 

 

 

 

 

P

 

 

 

 

 

 

U

Ext

 

 

 

 

 

T

 

 

 

 

 

S

 

 

 

 

 

 

1-A ISM

OPTIONS010 HS

Oven

MS

001 -IB

HP

Only

Talk

92

 

 

 

SERIALPLATE

Oven

 

-on

.

- 232

 

 

turn

 

RS

 

 

during

 

 

Configure:

 

 

To

Recall

Adjust

 

 

Hold

Osc

 

 

Figure 3-12. Option 001, 010, and 012 A6 High Stability Timebase Assembly Removal

3Disconnect the ac power supply’s two-wire cable from A6 High Stability Timebase Assembly (if the two-wire cable exists).

4Remove the three TORX 10 screws (H2) attaching the timebase to the chassis as shown in Figure 3-12.

5Remove A6 High Stability Timebase Assembly.

3-20

Assembly-Level Service Guide

Page 168
Image 168
HP 181A manual Remove A6 High Stability Timebase Assembly