Yamaha AD824, Service Manual

Page: 13 / 80

Fig. 10
Battery VN103500
VN103600(Battery holder for VN103500)
Notice for back-up battery removal
Push the battery as shown in figure,
then the battery will pop up.
Druk de batterij naar beneden zoals
aangeven in de tekening, de batterij
springt dan naar voren.
Battery
Battery holder
MAIN
[80]
PN
SW
[80]: Oval Head Screw 4.0X8 MFZN2BL (VS153600)
Fig. 9
[30]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[50B]: Bonding Screw 3.0X6 MFZN2BL (VS863000)
<Front View>
[80]
[30]
[50B]
[50B]
[30]
[80] [80] [110B]
[90]
Front panel
[30]
AD824
13
8-5 PN Circuit Board:
Remove the four (4) screws marked [30]. The PN circuit
board can then be removed. (Fig. 9)
8-6 SW Circuit Board:
Remove the PSW knob marked [90]. (Fig. 9)
Remove the two (2) screws marked [50B]. The SW circuit
board can then be removed. (Fig. 9)
9. Replacement of the Lithium Battery
9-1 Remove the top cover. (See procedure 1.)
9-2 Remove the MAIN circuit board. (See procedure 2.)
9-3 The lithium battery can be replacement on the MAIN
circuit board. (Fig. 10)
* The lithium battery is not a part of the MAIN circuit
board. When you replace the MAIN circuit board, remove
the lithium battery and install it in the new circuit board.