Motorola EP450 Service Manual

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A logic high 3 V from U201 pin 4 indicates to the microprocessor that the synthesizer is locked. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 11of this manual. Dismantling Tool Figure 2-3: Top Cover Removal 2. Advertisement Print version Many people prefer to read the documents not on the screen, but in the printed version.

This is to ensure that the product has been correctly programmed or has not been subjected to damage outside the terms of the warranty. A logic high 3 V from U201 pin 4 indicates to the microprocessor that the synthesizer is locked. Flexible Connection Figure 2-2: Flexible Connection Removal 4.

Motorola MOTOTRBO DR 3000 user manual - You can also delete a nuisance channel in the scan, so that it will be ignored in future. That's a semi-private conversation between two radios.

Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any motorola under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in the sale of a product. This is to ensure that the product has been correctly programmed or has not been subjected to damage user the terms of the warranty. If your area does not have a depot, please contact your Business Development Manager, Distributor, or contact Motorola Technical Support. The example below shows one mobile radio model number and its specific characteristics. If the identical replacement part is not locally available, check the parts list for the proper Motorola part number. Order parts from the nearest Motorola Communications parts center listed in Chapter 1, Introduction. See Chapter 1, Introduction for a list of manual service centers. The following disassembly procedures should be performed only if necessary. Pull the control head away from the radio assembly as shown in Figure 2-2. Flexible Connection Figure 2-2: Flexible Connection Removal 4. Remove the flexible connection from the socket on the control head board. Lift the top cover from the chassis. Dismantling Tool Figure 2-3: Top Cover Removal 2. Slowly lift the transceiver board on the edge at the front of the radio the edge that mates with the control head and pull gently toward the front of the manual as shown in Figure 2-5. Take care to slide the antenna connector and power connector out of the chassis towards the front. If removing the transceiver board, the thermal pad material user the two Final stage devices Q1402 and Q1403 on the radio chassis has been pulled up such that the radio chassis is exposed through the thermal pad, then the defective thermal pads must be removed and replaced. Press the dismantling tool until motorola snap connectors on the side of the back housing release from the control head. Figure 2-7: Control Rln4460 Board Knob Removal 4. Remove the speaker from the control head housing. Remove the display from the control head housing. Torque the six screws to 17 in lbs. Begin with the two screws located in the middle of the chassis followed by the four outer screws. Since the screws usually take a set, torque the screws a second time 1.

Motorola APX 7000XE portable radio Overview
Service: The round connector is available from Motorola for repair; the part number is 09-82201E01. Troubleshooting Table for Transmitter Continued Symptom Possible Causes Procedure Corrective Action Low Power 1. Instead, the mic cartridge is wired directly from J471-4 to ground. A logic high 3 V from U201 pin 4 indicates to the microprocessor that the synthesizer is locked. This optimizes the performance of the transmitter and receiver into the impedance presented by the antenna, significantly improving the antenna's efficiency. Synthesizer out of lock Verify U201-4 is at 3 V dc. This optimizes the performance of the transmitter and receiver into the impedance presented by the antenna, significantly improving the antenna's efficiency. Talkback option allows you to transmit on the channel you last stopped on. Program the softpot value by pressing the Program button. Order parts from the nearest Motorola Communications parts center listed in Chapter 1, Introduction.