HP 8559A (I), R88, ( E l, ( D l, A8, AS, Figure 8-33. Marker Assembly A8, Schematic Diagram (1 of 2), Figure 8-33. Marker Assembly AS, Schematic Diagram (2 of 2)

Figure 8-33.Marker Assembly A8, Schematic Diagram (1 of 2)

2309A & Below	Change	A 8 t o HP P a r t Number 08559-60022.
	Replace	f u n c t i o n block (I) o f F i g u r e 8-33 with new P/O F i g u r e 8-

33(1 of 2 ) (SERIAL PREFIX 2309A) included i n t h i s Manual Backdating supplement.

21528 &

Below

Make t h e

following

changes

t o

new F i g u r e 8-33 (1 of 2 ) (SERIAL

PREFIX

23OgA):

Change

R33 t o

34.8K.

Change

R87

and

R88 t o 34.8K.

Delete

t h e

+14.5V

supply

a t

R108.

Delete R108, R109, and CR21.

Connect

pin

14

t o

pin

1 of U2A.

2017A &

Below

I n

t h e

edge connector t a b l e

f o r P I , change

FUNCTION BLOCK

e n t r y

f o r

pin

10,

-10V,

t o

NC.

Figure 8-33.Marker Assembly AS, Schematic Diagram (2 of 2)

2309A

&

Below

Change

A 8

t o

HP

P a r t Number

08559-60022.

Replace r i g h t

h a l f

of f u n c t i o n

block ( E l o f

F i g u r e 8-33 with

new

P/O F i g u r e 8-33

(2

of

2)

(SERIAL PREFIX

2309A)

included

i n

t h i s

Manual

Backdating

supplement.

2017A

&

Below

I n

f u n c t i o n block

( D l ,

change -lOV t o

-12.6V

a t

t h e wiper

o f

R61

and

a t

pin

4 of U15.

s

Make t h e

following

changes

i n

f u n c t i o n

block

(El:

1945A00241,249,

258,262,265,277;

Change

R34

t o

10K.

1951A00283,286,

Change

R62

t o

IOK.

288-290.292,

Change

R94*

t o

61.9K.

295-300:

2003A

&Below