Kenwood TKR-850 Service Manual page 16
Uhf fm repeater
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Also See for TKR-850:
- Service manual (101 pages) ,
- Instruction manual (2 pages) ,
- Programming reference manual (83 pages)
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TKR-850
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
4. Accessory Cabinet
You can install optional accessories, such as a DC power
supply or duplexers in the accessory cabinet.
1. Place the optional accessory in the cabinet as shown be-
low.
2. If necessary, attach cushions (G13-1801-04 and/or G13-
1802-04) to the top plate (J21-8402-04) in order to adjust
the space between the cabinet and the top plate. Then,
insert the 3 tabs of the plate into the slots in the side of
the cabinet. High, middle, or low positions are available.
To afix the plate, inset and tighten 2 screws on the other
side of the plate.
16
MODIFICATION
Final Unit (A/2)
Component side
K1
Fig. 4
You can also flip the top plate upside-down to adjust a
height of the cabinet space.
Tighten screws
Cushion
(G13-1801-04 or
G13-1802-04)
or
The top plate can be inverted to adjust the height
of the cabinet space.
Fig. 5
5. Key Cover
To avoid accidentally pressing the keys, you can install
the key cover.
1. Install and fix the key protector using the 5 supplied
screws (N35-3006-46).
Screws
(N35-3006-45) x 5
Fig. 6
Hardware fixture
Insert the plate
tabs to set the
height position
(high, middle,
or low).
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