6-38
HDW-750/750CE V1
6-24. MB-898 Board Replacement
1.
Open the inside panel assembly.
(Refer to Section 1-5.)
2.
Remove the connector box.
(Refer to Section 1-6.)
3.
Remove the plug-in boards.
(Refer to Section 1-7.)
4.
Remove the front panel.
(Refer to Section 6-1.)
5.
Remove the DC-DC converter.
(Refer to Section 6-8.)
6.
Remove the inside panel assembly.
(Refer to Section 6-12.)
7.
Remove the HN-277 board.
(Refer to Section 6-20.)
8.
Remove the SS-92 board.
(Refer to Section 6-21.)
9.
Remove the LP-114 board.
(Refer to Section 6-22.)
10. Remove the handle assembly.
(Refer to Section 6-23.)
11. Disconnect the harness and flexible card wire
from the connectors (CN116, CN117,
CN201) on the MB-898 board.
n
Life of flexible card wire will be significantly
shortened if it is folded. Be very careful not
to fold the flexible card wire.
12. Remove the two screws and remove the PC
board holder (R).
13. Remove the two screws and remove the
bracket (DCP).
14. Disconnect the flexible card wire from the PC
board holder (F).
15. Remove the two screws and remove the PC
board holder (F).
16. Disconnect the harness and flexible card wire
from the connectors (CN101, CN114 to
CN116, CN120, CN121) on the MB-898
board.
n
Life of flexible card wire will be significantly
shortened if it is folded. Be very careful not
to fold the flexible card wire.
17. Disconnect the two harnesses from the four
claws of the harness cover. Then remove the
toothed small screw A and remove the
harness cover.
18. Remove the three toothed small screws
(2
x
4) and remove the MB-898 board.
19. Install the new MB-898 board by reversing
the steps of removal.
P2
x
4
P2 x 4
P2
x
4
MB-898 board
CN201
CN117
CN116
Flexible
card wire
Flexible card wire
PC board holder (F)
Bracket (DCP)
PC board holder (R)
Toothed
small screw
2
x
4
Toothed
small screw
2
x
4
MB-898 board
CN121
CN120
CN101
CN116
CN115
CN114
Flexible card wire
Flexible card wire
A
Claws
Harness
Cover harness
6-24. MB-898 Board Replacement
