xp141-241-341-5.0E - 第172页
C C h h a a p p t t e e r r 8 8 O O p p t t i i o o n n s s
FK-9F98-29 XP Series Training Text for Service Engineers
Edition 5.0 XP241 – Chapter 7 Checking Operation and Accuracy Page 4 of 4
Fuji Machine Mfg. Co., Ltd. Okazaki
SMT Equipment Quality Assurance Dept.
7–4 CS Section
NOTES:
C
C
h
h
a
a
p
p
t
t
e
e
r
r
8
8
O
O
p
p
t
t
i
i
o
o
n
n
s
s
FK-9F98-29 XP Series Training Text for Service Engineers
Edition 5.0 XP241 – Chapter 8 Options Page 1 of 10
Fuji Machine Mfg. Co., Ltd. Okazaki
SMT Equipment Quality Assurance Dept.
8 – 1 CS Section
8.1 Board Vacuum Back Up
The optional board vacuum backup system can be used to prevent upward warping of
boards, and can also be used to detect board-clamping errors. A vacuum pressure sensor is
used to establish whether the board has been vacuumed or not. The procedure described
below is the default procedure used in the Fuji inspection process. The threshold of the
pressure sensor and other configurations in this adjustment may need to be set manually
according to the individual requirements of the user.
Dip Switch Setting
1. Set the N.C/N.O switch to “N.O” (Normally Open).
2. After the adjustment is finished set the pressure display switch to “MEAS”. During the
adjustment this should be set to “SET”.
Trimmer Setting
1. Set the Hysteresis Trimmer (HYS) to minimum by turning it fully counterclockwise.
MEAS
SET
N.C
N.O
Hysteresis Trimmer
Pressure Trimmer
HYS
SET