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1-3-7. Replacing the Fuse and IC Link
The fuses and IC links are used in this unit. When over
current flows or overheat occurs due abnormality inside
the unit, these components blow. Be sure to use the
component specified below when replacing the component.
Replace the component after the cause of blowing the fuse
is found out and eliminated.
w
Use the specified component only.
Fuse and IC link are the important part for maintaining
safety of the unit.
If any components other than the specified one are used for
replacement, it may cause fire and electric shock. Be sure
to use the specified component.
CN-2843 Board (BKE-701A)
Ref. No.
Address
Part No.
! 1-533-804-21
F1
L-2
HN-314 Board
Ref. No.
Address
Part No.
! 1-576-124-21
PS1
B-1
OUT-28B Board (BKE-701A)
Ref. No.
Address
Part No.
! 1-576-329-21
F300
D-1
F301
C-1
F500
B-1
F501
K-1
SG-272 Board
Ref. No.
Address
Part No.
! 1-533-969-21
F300
A-1
1-12 (E)
1-3-8. Replacing the Backup Battery
The unit is equipped with a lithium battery for the SRAM
(IC803) backup on the CA-67 board. When replacing, be
sure to use the specified part.
In the SRAM, CLOK SET data is stored. When the battery
is replaced with a new one, resetting the CLOCK SET data
of the SETUP DATA menu is required. For details on how
to reset, refer to the user's guide.
c
Item
When replacing the battery, ensure that a mark on the
Fuse (2.5 A/125 V)
battery is correctly oriented as shown in the bellow figure.
If connected incorrectly, injuries and damage to objects in
the periphery may result from tears and leakage of fluid.
Item
Replacement procedure
IC Link 1 A
1. Remove the CA-67 board. (Refer to Section 1-3-3.)
2. Insert a tip of a flat-blade screwdriver between IC and
Item
Fuse (10A/125 V)
Item
Fuse (0.5 A/125 V)
3. Align a new battery with the mark of IC, and insert it.
4. Install the CA-67 board in its original slot.
Part name
: Crystal oscillator (in battery):
M4T28-BR12SH1
: ! 1-767-156-11
Part No.
Recommended Replacement Period:
Every five years
Replacement Part : On IC803 (F-4) /CA-67 board
battery to remove the battery.
M4T28-BR12SH1
IC
Mark
Mark
Flat-blade screwdriver
BVE-700A
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