Chapter 7 Parts Replacement
AC-4000H Service Manual No. 085-7323-08
7-6
Detaching the PK-229A (A/D board)
1.
Pull out the PK-229A from card spacers.
2.
Pull out the PK-229A (J2) and the PK-950B (XJ7)
connectors.
3.
Remove soldering of the load cell output cable.
Note 1: Perform span adjustment after the PK-229A
is exchanged.
2: Check wirings when installing the load cell
output cable.
R W G
B
White
Blue
S
Red
Green
Black
Detaching the PK-950B (Main board)
1.
Pull out all the harnesses connected with the
main board.
2.
Remove the four screws (M4 x 8).
3.
Remove the 4 card spacers from the board.
Note 1: Ensure to tighten the 2 screws (M4 x 6) when assembled for establishing a ground.
2: Referring to the previous item, remove the PK-299A installed on the PK-950B with the connector.
J2
PK-229A
PK-950B
XJ7
Card spacers
Solder
Screw (M4 x 8)
Card spacer
PK-229A
PK-950B