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MOTOROLA T193
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of MOTOROLA T193 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

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Text excerpt from page 36 (click to view)
Troubleshooting

Product Family C21

Table 3. PF B95 and C21 Telephone: Level III Troubleshooting Chart (Continued)
SYMPTOM 4. Incoming call alert transducer audio distorted or volume is too low. PROBABLE CAUSE Faulty transceiver board assembly. VERIFICATION AND REMEDY Replace the transceiver board assembly (refer to 1c). Verify that the fault has been cleared and reassemble the unit with the new transceiver board assembly. Replace the microphone as described in the procedures. If fault is not cleared, proceed to b. Replace the transceiver board assembly (refer to 1c). Verify that the fault has been cleared and reassemble the unit with the new transceiver board assembly.

5. Telephone transmit audio is weak. (usually indicated by called parties complaining of difficulty in hearing voice).

a) Microphone defective.

b) Transceiver board assembly defective.

6. Receive audio from earpiece speaker is a) Connections to or from transceiver Check connection from the earpiece to the weak or distorted. board assembly defective. transceiver board assembly. If connection is not at fault, proceed to b. b) Earpiece speaker defective. Temporarily replace the LCD speaker assembly with a known good assembly. Ensure good connection. Place a call and verify improvement in earpiece audio. If fault is cleared, reassemble the phone with the good assembly. If fault is not cleared, proceed to c. Replace the transceiver board assembly (refer to 1c). Verify that the fault has been cleared and reassemble with the new transceiver board assembly. Check the SIM card contacts for dirt. Clean if necessary, and check if fault has been cleared. If the contacts are clean, insert a known good SIM card into the telephone. Power up the unit and confirm that the card has been accepted. If the fault no longer exists, replace the defective SIM card. If the SIM card is not at fault, proceed to b. Replace the transceiver board assembly (refer to 1c). Verify that the fault has been cleared and reassemble the unit with the new transceiver board assembly. Replace vibrator as described in the procedures. If the fault has not been cleared, proceed to b. Replace the transceiver board assembly (refer to 1c). Verify that the fault has been cleared and reassemble the unit with the new transceiver board assembly. Test a selection of batteries in the rear pocket of the desktop charger. Check LED display for the charging indications. If these are charging properly, then the internal charger is at fault. Replace the transceiver board assembly (refer to 1c). Verify that the fault has been cleared and reassemble the unit with the new transceiver board assembly. Ensure the headset plug is fully seated in the jack. Replace the transceiver board assembly (refer to 1c). Verify that the fault has been cleared and reassemble the unit with the new transceiver board assembly.

c) Transceiver board assembly defective.

7. Telephone will not recognize or accept SIM card.

a) SIM card defective.

b) Transceiver board assembly defective.

8. Vibrator feature not functioning.

a) Vibrator defective.

b) Transceiver board assembly defective.

9. Internal Charger not working.

Faulty charger circuit on transceiver board assembly.

10. No or weak audio when using headset. a) Headset plug not pushed fully home. b) Faulty jack on transceiver board assembly.

32

July 27, 2001

6881038B70

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