Kenwood TKR-850 Service Manual

Also see for TKR-850: Brochure & specs Function reference Instruction manual Instruction manual Programming reference

16TKR-8503. Trickle Charge for Backup BatteryIf the external DC power supply is connected to the MainDC connector and a backup battery (12V rechargeable type)is connected to the Backup connector at the same time, thebattery can be trickle-charged from the external DC powersupply 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, removethe battery from the repeater and recharge it because thetrickle charge is not sufficient for recharging a completelydischarged battery.CN7 BACKUP(ORANGE)K1CHARGER61Final Unit (A/2)Component sideMODIFICATIONFig. 44. Accessory CabinetYou can install optional accessories, such as a DC powersupply 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 adjustthe space between the cabinet and the top plate. Then,insert the 3 tabs of the plate into the slots in the side ofthe cabinet. High, middle, or low positions are available.To afix the plate, inset and tighten 2 screws on the otherside of the plate.5. Key CoverTo avoid accidentally pressing the keys, you can installthe key cover.1. Install and fix the key protector using the 5 suppliedscrews (N35-3006-46).orHardware fixtureInsert the platetabs to set theheight position(high, middle,or low).Tighten screwsCushion(G13-1801-04 orG13-1802-04)The top plate can be inverted to adjust the heightof the cabinet space.Screws(N35-3006-45) x 5You can also flip the top plate upside-down to adjust aheight of the cabinet space.Fig. 5Fig. 6