HP 8642A Operating Manual page 424

S e r v i c e
FIG*
S&~/ok
j i f f s '
Model 8642A/B
N o t e s :
i. Eacti module in the HP 8 6 4 2 h a s a nine d i g i t module i d e n t i f i c a t i o n c o d e . The first four d i g i t s c o m p r i s e the
m o d u l e c o n f i g u r a t i o n c o d e . When s e r v i c i n g a module, n o t e any c h a n g e s that apply s p e c i f i c a l l y to its m o d u l e
c o n f i g u r a t i o n c o d e .
2. A l l circuit b o a r d s are m a n u f a c t u r e d u s i n g a hot air leveled p r o c e s s . These b o a r d s r e q u i r e e x t r a care when
r e p l a c i n g c o m p o n e n t s . Refer to G e n e r a l S e r v i c e I n f o r m a t i o n , p a r a g r a p h B - 3 .
A4
U46
TOP VIEW
A4
K1
TOP VIEW
1 ( + Vs)
3(GND)
8 7 6 5
2 (Vout)
1 2 3 4
Schematic General Information
8G-106