Epson 900N, Service Manual

Page: 50 / 201

EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles
45
Figure 2-12. C265 Main Board Component Layout
L i t h i u m b a t t e r y
I C 1 ( C P U : H 8 S )
I C 2 ( E 0 5 B 5 9 )
I C 3 ( E 0 5 B 6 0 )
I C 4 ( O n e - t i m e P R O M )
I C 5 ( D - R A M )
I C 6 ( C G R O M )
( I C 1 1 ) P F M o t o r d r i v e r
( I C 1 2 ) C R M o t o r d r i v e r
I C 8 ( T i m e r & E E P R O M )
C N 1 4
C N 9
C N 8
C N 1
C N 3
C N 4
C N 2
C N -
1 2
C N -
1 6
C N -
1 1
C N 1 0
C N 5
C N 6
C N 1 5
C N 1 3
T h e r m i s t o r ( d e t e c t s t e m p e r a t u r e
o f t h e h e a t s i n k )
C h a r g i n g / d i s c h a r g i n g d r i v e r
f o r d r i v i n g t h e b l a c k n o z z l e s
Q 5 ( u p p e r ) , Q 6 ( l o w e r )
C h a r g i n g / d i s c h a r g i n g d r i v e r
f o r d r i v i n g t h e c o l o r n o z z l e s
Q 3 ( u p p e r ) , Q 4 ( l o w e r )
H e a t S i n k
T h e r m i s t o r ( d e t e c t s t e m p e r a t u r e
o n t h e p r i n t h e a d b o a r d )
I C 1 6 ( u p p e r ) , I C 1 5 ( l o w e r )
H e a d p r e - d r i v e r
I C 1 3 ( u p p e r ) ,
I C 1 4 ( l o w e r )
A S F M o t o r d r i v e r