S E C T I O N Battery, Accessory and Disassembly Information Section2 2.1 Battery Information 2.1.1 Battery Removal / Installation To remove the battery from the radio for recharging or replacement, first turn the radio off. Then press the release button (see Figure 2.1) and rotate the battery upward to the approximate point shown and remove it from the radio. Figure 2.
Battery, Accessory and Disassembly Information 2.1.2 Preventing Loss of Encryption Keys during Battery Change If Infinite Key Retention is not programmed, the radio must be connected to a constant power source to preserve the encryption keys in memory. Storage capacitors maintain the supply voltage (and these keys) for approximately 3.5 minutes to allow the battery to be changed. Therefore, when changing the battery of a radio containing keys, make sure to reattach another battery within 3.5 minutes. 2.
Battery, Accessory and Disassembly Information 2.1.4.1 Charging Li-Ion Batteries The Li-Ion (Lithium-Ion) battery can be charged separately or while attached to the radio. When it is charged while attached to the radio, radio power should be turned off. Note The Li-P battery can only be charged in an approved battery charger. Charging lithium batteries in nickel only chargers can result in overcharging the batteries and can damage the cells through swelling.
Battery, Accessory and Disassembly Information 2.2 Belt Clip Installation Remove the battery and slide the beltclip into the slot on the battery until it locks into place (see Figure 2.2). To remove the beltclip, squeeze the tab on the end of the beltclip and slide the beltclip out. Figure 2.2 Belt Clip Installation NEEDS TO BE REPLACED Beltclip Beltclip Locking Tab 2.3 Accessory Installation To connect an accessory such as a speaker-microphone to the radio, refer to Figure 2.
Battery, Accessory and Disassembly Information 4 Install the included locking screw in the latch tab in the location shown. Figure 2.3 Accessory Installation Install Lock Screw Here Accessory Connector Latch NEEDS TO BE REPLACED Hook 2.3.1 Option Select Lines Opt Sel 1 (pin 3) and Opt Sel 2 (pin 7) of the UDC (accessory) connector indicate to the control logic when an accessory is connected and what accessory is installed. These lines function as follows: Opt Sel 1 and 2 High (3.
Battery, Accessory and Disassembly Information 2.4.1 Separating Front Cover and Chassis 1 Remove the antenna. 2 Insert a small flat-blade screwdriver or similar tool between the plastic front cover and metal chassis as shown below. Carefully lift the chassis out of the cover with the screwdriver blade. Raise it to approximately the point shown in the next illustration. Front Cover NEEDS TO BE REPLACED Metal Chassis 3 Slide the chassis out of the top part of the front cover.
Battery, Accessory and Disassembly Information 2.4.2 Removing RF and Logic Boards From Chassis Remove the Rf and Logic Boards as follows: 1 Separate the front cover and chassis as described in the preceding section. The RF and Logic Boards are located inside the metal chassis as shown below. NEEDS TO BE REPLACED 2 Remove the shields over the RF and Logic Boards. These shields insert in slots on one side of the chassis and then clip to the other side of the chassis.
Battery, Accessory and Disassembly Information 2.4.3 Removing UI (User Interface) Board 1 Separate the front cover and chassis as described in Section 2.4.1. The UI Board is located inside the front cover as shown below. MICROPHONE UI Board Unsolder Wires Remove Screws Unlock Flex Circuits NEEDS TO BE REPLACED 2 Unlock the three flex circuits shown above by sliding the tab on each connector outward.
Battery, Accessory and Disassembly Information 7 Pull the rubber knobs and plastic channel number ring off the shafts. 8 To remove the position indicator ring under the channel knob, turn the channel switch so that the flat part of the shaft is toward one of the tangs (see below). Then insert tweezers or similar tool under both tangs and push it inward to release the tangs from the groove in the shaft.
Battery, Accessory and Disassembly Information 2-10 Draft 2/8/12 Viking Portable Radio Service Manual
