Sony Ericsson T600 Manual de usuario

Trouble Shooting Guide, Electrical

4/00021-2/FEA 209 544/74 A

Sony Ericsson Mobile Communications AB

Approved according to 000 21-LXE 107 42/1

Trouble Shooting GuideT600, Electrical

Contents

1Explanations ....................................................................................................................2

1.1 Service Test menu .............................................................................................2

2Network Problems ..........................................................................................................3

3On/Off problems .............................................................................................................4

4Display/Illumination Problems ......................................................................................5

5Capacity/Charging Problems.........................................................................................7

6Key Problems ..................................................................................................................8

6.1 Volume Switch does not work...........................................................................8

7Alert Problems ................................................................................................................9

7.1 Buzzer................................................................................................................9

7.2 Vibrator..............................................................................................................9

8Software Problems........................................................................................................11

9SIM Problems................................................................................................................11

10 Revision History............................................................................................................12

Trouble Shooting Guide, Electrical

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Sony Ericsson Mobile Communications AB

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1 Explanations

Component placing document is not available.

1.1 Service Test menu

In the software of the phone there is a built in service function that allows testing some of the

functions of the phone.

They are as follows:

1. Service info

2. Service settings

3. Service tests

To use the function press the following combination, using the navigation button and the

keyboard:

>*<<*<*

Trouble Shooting Guide, Electrical

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Sony Ericsson Mobile Communications AB

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2 Network Problems

• Check that the Antenna connector internal is properly fitting and undamaged (Fig. 2-1).

• If necessary replace the Antenna connector internal.

• Check that radiator inside Antenna is not mechanical damaged, bended or oxidised. If

needed, replace the antenna assy (Fig. 2-2).

If the fault still remains, handle the unit according to local directives.

Figure 2-1

Figure 2-2

Trouble Shooting Guide, Electrical

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Sony Ericsson Mobile Communications AB

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3 On/Off problems

• Check the keyboard for malfunction. If necessary clean the keyboard pads from circuit

board and/or replace the keyboard according to the Working Instructions, Mechanical.

• Check that the System Connector (Fig. 3-1) not is incorrectly soldered, mechanically

damaged, dirty or oxidised. If necessary replace it.

If the fault still remains, handle the unit according to local directives.

Figure 3-1

Trouble Shooting Guide, Electrical

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Sony Ericsson Mobile Communications AB

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4 Display/Illumination Problems

• Make visual check to ensure that the elastomer is properly in place in its housing in

Display assy (Fig. 4-1). Also clean the Display pads from the circuit board if necessary.

• Replace the display according to the Working Instruction, Mechanical.

• In Display/Illumination problems make visual check to ensure that the White colour

display LEDs (4 pieces) (Fig. 4-2) and Blue colour keymat LEDs (6 pieces) (Fig. 4-3)

are properly in place. Check also for the incorrect soldering of the LEDs. Re-solder it if

needed.

• If few but not all of the LEDs aren’t lit, replace broken ones according to the Working

Instruction, Electrical.

• If none of the LEDs are lit, proceed according to following:

1. Check White colour display LEDs and Blue colour keymat LEDs

2. Measure resistance of the LEDs.

• If the resistance is approx. 0 Ohms, there’s a short circuit in at least one of the

LEDs. Remove them one at a time and measure the resistance after each

removal. When the resistance increases the faulty LED has been removed.

If the fault still remains, handle the unit according to local directives.

Figure 4-1

Figure 4-2

Trouble Shooting Guide, Electrical

4/00021-2/FEA 209 544/74 A

Sony Ericsson Mobile Communications AB

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Figure 4-3

Trouble Shooting Guide, Electrical

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Sony Ericsson Mobile Communications AB

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5 Capacity/Charging Problems

• Check that the System Connector (Fig. 5-1) is not incorrectly soldered, mechanically

damaged, dirty or oxidised. If necessary replace it.

• Check that the Battery Connector (Fig. 5-2) is not incorrectly soldered, mechanically

damaged, dirty or oxidised. If necessary replace it by BGA replacement machine.

If the fault still remains, handle the unit according to local directives.

Figure 5-1

Figure 5-2

Trouble Shooting Guide, Electrical

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Sony Ericsson Mobile Communications AB

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6 Key Problems

• Use the Service Test menu, choose Service tests/Keyboard.

• Make sure if it is the Keyboard that causes the problem. Check keyboard pads and key

domes for damage, dust, dirt, moisture and oxidation. Clean if needed.

• If it is the Keyboard that causes the problem, replace the Keyboard.

6.1 Volume Switch does not work

• Check Volume Switch soldering.

• If Volume Switch that causes the problem, replace the Volume Switch (Fig. 6-1.)

If the fault still remains, handle the unit according to local directives.

Figure 6-1

Trouble Shooting Guide, Electrical

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Sony Ericsson Mobile Communications AB

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7 Alert Problems

7.1 Buzzer

• Use the Service Test menu, choose Buzzer.

• Activate the buzzer using the keymat.

• If it sounds low or distorted open the phone and inspect the Buzzer (Fig. 7-1) and the

buzzer gasket in front cover.

• Check the Buzzer (Fig. 7-1) for faulty soldering joints.

• If necessary re-solder or change the Buzzer. If the problem is in the buzzer gasket,

replace the Front cover.

If the fault still remains, handle the unit according to local directives.

7.2 Vibrator

• Use the Service Test menu, choose Vibrator.

• Activate the Vibrator using the keymat.

• If it does not vibrate, open the phone and inspect the Vibrator (Fig. 7-2) and vibrator

contact springs. Check vibrator pads (Fig. 7-3) for damage and oxidation. Clean if

needed.

• If necessary, change the Vibrator.

If the fault still remains, handle the unit according to local directives.

Figure 7-1

Trouble Shooting Guide, Electrical

4/00021-2/FEA 209 544/74 A

Sony Ericsson Mobile Communications AB

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Figure 7-2

Figure 7-3

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