Troubleshooting. Motorola C330 - 2, C350 Series

Level 1 and 2 Service Manual Troubleshooting

Troubleshooting

Manual Test Mode

Motorola C350 Series telephones are equipped with a manual test mode capability.

This allows service personnel to verify functionality and perform fault isolation by entering keypad commands.

To enter the manual test command mode, a GSM / DCS test SIM must be used.

1.

Press

O to turn the phone OFF.

2.

Remove the battery as described in the procedures.

3.

Remove the customer’s SIM card from the phone as described in the procedures.

4.

Insert the test SIM into the SIM slot.

5.

Replace the battery as described in the procedures.

6.

Press O to turn the phone ON.

Manual Test Mode Commands

Table 2. Manual Test Commands

Key Sequence Test Function/Name

<Menu>048263* Enter manual test mode

"End" Key

54*

Exit manual test mode

Suspend

0*0*0

0*0*1

0*0*2

0*0*3

Select tone 0

Select tone 1

Select tone 2

Select tone 3

0*0*4

0*0*5

0*0*6

0*0*7

0*0*8

0*0*9

0*0*124

0*0*125

0*0*126

0*0*127

0*1*X

Select tone 4

Select tone 5

Select tone 6

Select tone 7

Select tone 8

Select tone 9

Select tone 1 KHz

Select tone 2 KHz

Select tone 3 KHz

Select tone 4 KHz

Disable tone X

Remarks

Required for all Test Mode Operations

3*0*1

3*0*0

4*3*1

4*3*0

4*4*1

Enable vibrator

Disable vibrator

Enable speech coder full rate

Disable speech coder full rate

Enable speech coder enhanced full rate

Audio loopback

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Troubleshooting C350 Series

Table 2. Manual Test Commands (Continued)

5*0*11

5*0*12

5*0*13

5*0*14

5*0*15

6*2*2*0*0

6*4*6*0*0

10*0*3

10*0*4

10*0*5

10*0*6

10*1*0

18*0

18*1

20*X*0

20*1*0

Key Sequence

4*4*0

4*5*1

4*5*0

5*0*0

5*0*1

5*0*2

5*0*3

5*0*4

5*0*5

5*0*6

5*0*7

5*0*8

5*0*9

5*0*10

20*62*0

20*124*0

20*512*0

20*700*0

20*885*0

20*512*0

20*661*0

20*810*0

55*2*001

55*2*000

55*2*002

Test Function/Name

Disable speech coder enhanced full rate

Enable speech coder half rate

Disable speech coder half rate

Set audio level 0

Set audio level 1

Set audio level 2

Set audio level 3

Set audio level 4

Set audio level 5

Set audio level 6

Set audio level 7

Set audio level 8

Set audio level 9

Set audio level 10

Audio level

Remarks

Set audio level 11

Set audio level 12

Set audio level 13

Set audio level 14

Set audio level 15

Set Audio Path. Int Mic, IntSpk, RX unmute, TX unmute

Set Audio Path. Boom Mic, Boom Spk, RX unmute, TX unmute

Set band GSM 900

Set band DCS 1800

Set band PCS 1900

Set dual band GSM 900 / 1800

Read band

Initialize non-volatile memory (Master Reset)

Initialize Non-volatile memory (Master Clear)

Load Channel number X

Load channel number 1 GSM Low channel

3= GSM 4= DCS 5= PCS 6 =GSM/DCS

Select Channel (Used for debugging Rx mode)

Load channel number 62 GSM Mid channel

Load channel number 124 GSM High channel

Load channel number 512 DCS Low channel

Load channel number 700 DCS Mid channel

Load channel number 885 CDS High channel

Load channel number 512 PCS Low channel

Load channel number 661 PCS Mid channel

Load channel number 810 PCS High channel

Test Display. All pixels ON

Test Display. All pixels OFF

Test Display. Checkerboard pattern A

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Level 1 and 2 Service Manual Troubleshooting

Table 2. Manual Test Commands (Continued)

Key Sequence

55*2*003

55*2*004

Test Function/Name

Test Display. Checkerboard pattern B

Test Display. Border pixels ON

Remarks

*#06# IMEI Check No Test Mode Required

Phone Set up -->

Phone Status -->

Other

Information

Flex Version / Technology / S-W Version / Readiness Status No Test Mode Required

Troubleshooting Chart

Table 3. C350 Series Telephone: Level 1 and 2 Troubleshooting Chart

Symptom Probable Cause

1. Telephone will not turn on or stay on.

a) Battery either discharged or defective.

Verification And Remedy

Measure the voltage at TP_BATT+ with battery attached. If voltage is below 3.0V, attach a charger to the phone and ensure that the phone is charging. If the phone does not charge, change the battery and repeat the measurement charging procedure. If the phone still does not turn on, proceed to b).

b) Transceiver board defective.

2. Telephone exhibits poor reception or erratic operation such as calls frequently dropping or weak or distorted audio.

3. Display is erratic, or provides partial or no display.

4. Incoming call alert transducer audio distorted or volume is too low.

5. Telephone transmit audio is weak.

(usually indicated by called parties complaining of difficulty in hearing voice).

a) Antenna defective b) Transceiver board defective.

a) Elastomeric connections between transceiver and front Endo faulty.

b) Transceiver board defective.

a) Faulty back Endo. b) Transceiver board defective a) Microphone defective on the front

Endo.

b) Transceiver board defective.

Replace the faulty board with a known good transceiver board. If the phone powers up after replacement, reassemble the phone with a new transceiver board. Verify that the fault is fixed.

Check connection between the antenna and the transceiver board. If the contact is intermittent visually, replace with a known good back Endo.

If the fault is still present, proceed to b.

Replace with a known good transceiver board

(refer to 1c). Verify that the fault has been cleared with the new transceiver board and reassemble the unit.

Replace the front Endo with a known good one.

If display still does not come up, proceed to b.

Replace with a known good transceiver board

(refer to 1c). Verify that the fault has been cleared with the new transceiver board and reassemble the unit.

Replace the back Endo with a known good back

Endo. If the problem goes away, replace with a new back Endo. Else proceed to b.

Replace with a known good transceiver board

(refer to 1c). Verify that the fault has been cleared with a new transceiver board.

Replace the microphone or the front Endo as described in the procedures. If fault is not cleared, proceed to b.

Replace the transceiver board (refer to 1c).

Verify that the fault has been cleared and reassemble the unit with the new transceiver board.

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Troubleshooting C350 Series

Table 3. C350 Series Telephone: Level 1 and 2 Troubleshooting Chart (Continued)

SIM card.

Symptom

6. Receive audio from earpiece speaker is weak or distorted.

7. Telephone will not recognize or accept

Probable Cause a) Elastomeric connections between front Endo earpiece speaker and transceiver board faulty.

b) Transceiver board defective.

a) SIM card defective.

Verification And Remedy

Replace the front Endo with a known good one.

Reassemble with a new front Endo if the fault goes away. If the fault is still present, proceed to b.

Replace the transceiver board (refer to 1c).

Verify that the fault has been cleared and reassemble the unit with the new transceiver board.

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 goes away, replace the defective SIM card. If the SIM card is not at fault, proceed to b.

8. Vibrator feature not functioning.

b) Pressure contact between SIM block on back Endo and transceiver board defective.

Replace the back Endo with a known good one.

If problem goes away, replace with a new back

Endo and reassemble. Else proceed to c.

c) Transceiver board defective.

Transceiver board defective.

Replace the transceiver board (refer to 1c).

Verify that the fault has been cleared and reassemble the phone with the new transceiver board.

Replace the transceiver board with a known good transceiver board (refer to 1c). Verify that the fault has been cleared and reassemble the unit with the new transceiver board.

9. Internal Charger not working.

Transceiver board defective.

Replace the transceiver board with a known good transceiver board (refer to 1c). Verify that the fault has been cleared and reassemble the unit with the new transceiver board.

10. No or weak audio when using headset. a) Headset plug not pushed in fully. Ensure the headset plug is fully seated in the jack.

b) Faulty jack on transceiver board.

Replace the transceiver board with a known good transceiver board (refer to 1c). Verify that the fault has been cleared and reassemble the unit with the new transceiver board.

Programming: Software Upgrade and Flexing

Contact your local technical support engineer for information about equipment and procedures for flashing and flexing.

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