Disassembly For Repair - Kenwood TKR-750 Service Manual

TKR-750
MODIFICATION / DISASSEMBLY FOR REPAIR
3. Trickle Charge for Backup Battery
If the external DC power supply is connected to the Main
DC connector and a backup battery (12V rechargeable type)
is connected to the Backup connector at the same time, the
battery can be trickle-charged from the external DC power
supply with a maximum current of 0.5A.
Short the CHARGE land near R61.
Notes :
1. Make this modification after removing the DC power sup-
ply and battery for safety.
2. When the DC power supply is connected after the modi-
fication, DC voltage is output to the Backup connector.
Be careful during setup.
3. When the backup battery is used for a long time, remove
the battery from the repeater and recharge it because the
trickle charge is not sufficient for recharging a completely
discharged battery.
CN7 BACKUP
(ORANGE)
CHARGE
16
Final unit (A/2)
Component side
K1
Fig. 4

DISASSEMBLY FOR REPAIR

How to Remove the Panel Assy (ABS)
Note : You can remove the panel assembly (ABS) without
removing the top panel (A62-0840-03).
1. To remove panel (TX-RX,
2. To remove panel assembly (Front,
( ).
3
3. The panel assembly (ABS) is security fastened by 4 tabs
( 5 ) on top and bottom. You can remove the panel as-
sembly by pulling to front while you are pulling up the
tabs.
2 ), loose 6 screws ( ).
1
4 ), loose 6 screws