Motorola A780 - User Manual

Other manuals for Motorola A780

User Manual183 pages

Guide To Getting Started5 pages

Service Manual48 pages

Questions and Answers

B
Billy JonesAug 17, 2025
How to fix a Motorola Cell Phone that will not turn on?
- J
  Joshua BaldwinAug 17, 2025
  If your Motorola Cell Phone isn't powering on or staying on, here's what to check: 1. **Battery:** Measure the battery voltage with a 50 ohm load. If it's below 3.25 Vdc, recharge it. If it won't recharge, replace the battery. 2. **Connectors:** Inspect the battery connectors for misalignment or damage. Realign them, and if needed, replace the battery or get the connector replaced at a service center. 3. **Transceiver board:** Substitute the transceiver board assembly with a known good one. If it works, replace the original. 4. **Keyboard assembly:** Replace the keyboard assembly. Temporarily connect a +3.6 Vdc supply to the battery connectors. Press and hold the PWR button. If unit turns on and stays on, disconnect the dc power source and reassemble with the new keyboard assembly.
J
Justin RodriguezAug 20, 2025
Why does my Motorola A780 Cell Phone have poor reception?
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  Marilyn TateAug 20, 2025
  If your Motorola Cell Phone has weak or distorted audio, or calls are frequently dropping, the issue might be with the antenna or transceiver board. * **Antenna:** Ensure the antenna pin is properly connected to the transceiver board. If it is, try replacing the antenna with a known good one. * **Transceiver board:** If the antenna isn't the problem, replace the transceiver board assembly.
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Brian CruzAug 22, 2025
Why is the incoming call volume low on my Motorola A780?
- K
  Kevin MorrisonAug 23, 2025
  If the incoming call alert on your Motorola Cell Phone sounds distorted or the volume is too low, the issue is a faulty transceiver board assembly. Replace the transceiver board assembly to resolve this.
A
Andrew HuntAug 26, 2025
Why is the internal charger not working on my Motorola A780?
- M
  mark35Aug 26, 2025
  If the internal charger on your Motorola Cell Phone is not working, it's likely due to a faulty charger circuit on the transceiver board assembly. Replace the transceiver board assembly.
R
Ryan LoweAug 28, 2025
What to do if Motorola A780 display is not working properly?
- J
  Jessica JohnsonAug 28, 2025
  To address a Motorola Cell Phone display that's acting erratically, showing only partial information, or not displaying anything at all: * **Transceiver board connections:** Check the flexible printed cable (flex) and ensure the flex connector is fully pressed down. Also, check the connector to transceiver board connections. If the connector is faulty, replace the transceiver board assembly. * **LCD module:** Temporarily replace the LCD module with a known good one. If the fault clears, reassemble with the new LCD module. * **Transceiver board assembly:** If the LCD module isn't the problem, replace the transceiver board assembly.
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Hannah PittmanAug 31, 2025
How to fix a Motorola A780 with weak transmit audio?
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  coffeygabrielAug 31, 2025
  If your Motorola Cell Phone has weak transmit audio, and people are having trouble hearing you, here's what to check: 1. **Microphone connections:** Check the microphone connections to the transceiver board assembly. If the connector is faulty, proceed to checking the transceiver board assembly. 2. **Microphone:** Disconnect the microphone and try a known good one. If this improves the transmit signal, replace the original microphone. If the microphone is not at fault, reinstall original microphone and proceed to checking the transceiver board assembly. 3. **Transceiver board assembly:** If the microphone isn't the issue, replace the transceiver board assembly.
C
Crystal PerezSep 3, 2025
Why is the earpiece audio weak on my Motorola A780 Cell Phone?
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  Mark MartinSep 3, 2025
  If the receive audio from the earpiece speaker of your Motorola Cell Phone is weak or distorted: * **Transceiver board connections:** Check the flex and the flex connector from the flip assembly to the transceiver board assembly. If the flex is faulty, replace the flip assembly. * **Antenna assembly:** Check to make sure the antenna is installed correctly. If the antenna is installed correctly, substitute a known good antenna assembly. * **Transceiver board assembly:** If the connections and antenna are fine, replace the transceiver board assembly.
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Lee DouglasSep 5, 2025
What to do if my Motorola Cell Phone doesn't recognize the SIM card?
- D
  Douglas WallsSep 5, 2025
  If your Motorola Cell Phone isn't recognizing or accepting the SIM card: * **SIM:** Check the SIM contacts for dirt and clean if necessary. If the contacts are clean, insert a known good SIM into the telephone. If the SIM is not at fault, proceed to checking the transceiver board assembly. * **Transceiver board assembly:** If the SIM isn't the problem, replace the transceiver board assembly.
B
Bobby ClaytonSep 8, 2025
Why doesn't my Motorola A780 sense when the flip is opened or closed?
- M
  Mary WhiteSep 8, 2025
  If your Motorola Cell Phone doesn't sense when the flip is opened or closed, which affects answering or making calls: * **Flip assembly:** Temporarily replace the flip assembly with a known good assembly. If the fault is cleared, reassemble with the new flip assembly. If fault not cleared, proceed to checking the transceiver board assembly. * **Transceiver board assembly:** If the flip assembly isn't the problem, replace the transceiver board assembly.
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Jason Bartlett MDSep 12, 2025
How to fix the vibrator on a Motorola A780?
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  jessebriggsSep 12, 2025
  If the vibrator feature on your Motorola Cell Phone is not working, the vibrator flex, wing PCB, or the main transceiver board assembly may be defective. Replace the defective component.