Motorola E365 Service Manual

E365 Trouble Shooting

Service Manual

Compal Communications, Inc.

1

Baseband Descriptions

△

1. The mobile phone can’t boot after inserting the battery?

•STEP1. Check the energy of battery greater than 3.8v.(>3.8v)
a. to charge the battery. b. change the battery.

•STEP2. Check the battery connector
a. recombination. b.change the battery connector

•STEP3. Check the BTB connector between M/B and MMI
a. recombination

•STEP4. Check the MMI whether in normal

a. recombination

•STEP5. Check the software in correct
a. Re D/L

2. The mobile phone turn off automatically after turn on?

•STEP 1.Check battery if voltage enough greater than(>3.8v)
a. recombination b. Change battery

•STEP 2.Check ADC(3.4v) is correct

a. Re-adjustment ADC(3.4v)

•STEP 3.IF above-mentioned are all in normal condition then the problem could be

caused by M/B.

STEP3.1check J2.Row4 and GND maybe short.
STEP3.2.check J2 Pwon and GND maybe short.

BTB_CON

COL0
COL1
COL2
COL3
COL4

PWON

ROW0

VDDS-MIF_2.8V

varistor 5.5V 0402

GAP3
S

VR16

GAP4
S

GAP5
S

GAP7SGAP9

GAP6
S

GAP8
S

1

18

2

17

3

16

4

15

J2

5

14

6

13

7

12
11

8

10

9

GAP14

GAP12

GAP10

S

S

GAP11
S

GAP13

S

S

S

DGND

C46

22pF 0402

DGND

VR3

varistor 5.5V 0402

DGND

3. The screen display can’t search SIM card when insert SIM after turn on.

•STEP 1.Check the SIM card whether to louse.

a. Change SIM card.

•STEP 2.Check the SIM connecter.

VBAT
LEDKEYN

ROW4
ROW3
ROW2
ROW1
LIGHTSENSER_EN

a. Change SIM connector.

•STEP 3.IF above-mentioned are all in normal condition then the problem could be

caused by M/B.
a. if change SIM connector isn’t ok,then change a new IOTA.

2

5. No display on LCD after turn on?

•STEP 1.Check the connector of LCD and FPC

a. recombination

•STEP 2.Check the LCD whether to louse

a. Change LCD

•STEP 3.IF above-mentioned are all in normal condition then the problem could be

caused by M/B.
STEP 3.1.checkVDDS-MIF_2.8V =2.8V (if VRMEM<2.7V, the LCD will not
work)
STEP 3.2. check J6 every PIN’s impedance, then you can find one of them
has problem

6. Has not LCM backlight :

•STEP 1. Check SET is correct

a. To set up LCD light bright mode.

•STEP 2. Check LCD and M/B whether to connect
a. Recombination.

•STEP 3. Check LCD failure

3

a. Change LCD.

•STEP 4.IF above-mentioned are all in normal condition then the problem could be

caused by M/B

STEP 1.Check U11 is slant.
STEP 2. when you press the keypad ,measure U11.4=2.7V
STEP 3. if RR1 have about 0.4V,then change U11.
STEP 4.if U11.4 < 2.7V,then change a new G2.
STEP 5.if step1 to step4 is ok, then check U6.3 about 10V
STEP 6.if U11.1<8V ,then change a new U11 or FL1、D6.

.

LED_Anode

0.22uF 0603

LED_Cathode

D6

CC1

DGND

RR1

56 0402

RB551V-30

R36

0 0402

DGND

23

DGND

R40

0 0402 NM

1
2
3

VDDS-MIF_2.8V

U11

SW
GND
FB

22uH

MP1523

FL1

5

BIAS

4

EN

CC2

1uF 0603

DGND

7. Has not Keypad Backlight ?

•STEP 1 Check the BTB connector between M/B and MMI
a. Recombination

•STEP 2.Check MMI whether to have problem
a. Change MMI

•STEP 3.IF above-mentioned are all in normal condition then the problem could be

caused by M/B.

VBAT

LEDLCM_EN

STEP3.1.use meter to check J2 every PIN impedance, then you can find

one of them has
problem.

BTB_CON

COL0
COL1
COL2
COL3
COL4

PWON

ROW0

VDDS-MIF_2.8V

varistor 5.5V 0402

GAP3
S

VR16

GAP4
S

GAP5
S

GAP7SGAP9

GAP6
S

GAP8
S

1

18

2

17

3

16

4

15

J2

5

14

6

13

7

12
11

8

10

9

GAP10

S

S

GAP11

S

S

GAP13

S

S

DGND

22pF 0402

DGND

GAP14

GAP12

C46

varistor 5.5V 0402

DGND

VR3

Step3.2 LEDKEY_EN= 1.4 ~ 2.8V, BQ3.pin3 = 1V DC

4

VBAT
LEDKEYN

ROW4
ROW3
ROW2
ROW1
LIGHTSENSER_EN

E

LEDB

R64 0 0402 NM

LEDK

KeyLed_En

R65 1.5K 0402

C73

33nF 0402

R67

1K 0402

8. Receiver has no key tone or sound.

•STEP 1.Check SET is correct

a. set up to key tone mode.

•STEP 2.Check Receiver pin is that slanting or sag
a. To adjust the Receiver pin.

•STEP 3.Check Receiver whether in normal

a. Change Receiver.

•STEP 4.Check M/B pad is that oxidation or dirty
a. Use a eraser to clean the pad.

2

DGND

2SC5585 EMT3

1 3

R66

4.7 0402

BQ3

•STEP 5.IF above-mentioned are all in normal condition then the problem could be

caused by M/B

STEP 5.1.check every part impedance (R62、R63、C70、C71,C72、VR7、

VR8).

STEP 5.2.if every part is ok, then change a new IOTA.

5

9. No ring tone

•STEP 1.Check SET is correct

a. Set up to ring mode.

•STEP 2.Check speaker hold has screwed

a. lock up a screw.

•STEP 3.Check speaker failure?
a. Change Speaker.

•STEP 4.Check speaker Connector damage?
a. Changed Speaker Connector.

•STEP 5.IF above-mentioned are all in normal condition then the problem could be

caused by M/B.
STEP5.1.check MELODY “Pin17、Pin18” impedance.

STEP5.2.if step1 is ok, measure L2, C49, C50, R45, R46,

R44,C51,C52,R37,C53,C54,C55,R48 impedance. Then
you can find one of them has problem.

10. Can not charging:

•STEP 1.Check if you use the right adaptor

a. Change right adaptor.

•STEP 2.Check I/O Connector failure?
a. Change I/O Connector.

•STEP 3.Check I/O Connector Pin1&Pin2 solder creak?

a. I/O Connector Pin1&Pin2 re-soldering.

6

•STEP 4.IF above-mentioned are all in normal condition then the problem could be

caused by M/B. STEP 4.1.if U2.4 <5.8v,then change a new U2.
STEP 4.2.if step1 is ok, then change a new IOTA.

VBAT

VBATS

R1

0.15 0805 1%

VCCS

D2

RB160M-30

2 3

68 0805 1% NM

3

4

VCHG

R5

C10

22nF 0402

2

1

FDC6506P

5

6

U3

4

IN

5

VCC

NCP345

U2

ICTL

VCHG1
nCHG

CNTRL

GND

R15

OUT

PCHG

100K 0402

DGND

3
2
1

DGND

DGND

1uF 0603

nCHG

C21

11. Key has not function

•STEP 1. Check the BTB connector between M/B and MMI is well?

a. Recombination.

•STEP 2. Check MMI whether to have problem
a. Change MMI.

•STEP 3.Check MMI Pad whether to oxidize and dirty

a. Use a eraser to clean the pad.

•STEP 4. .IF above-mentioned are all in normal condition then the problem could

be caused by M/B.
STEP 4.1.check BTB connector is short.
STEP 4.2.if not short, then change a new G2

7

12. Has not vibration or vibrator can not stop.

•STEP 1.Check SET is correct

a. Set up to vibrate mode.

•STEP 2.Check Vibrator Pin is that slanting and sag

a. To adjust the Vibrator Pin.

•STEP 3. Check Vibrator failure?

a. Change Vibrator.

•STEP 4. Check M/B pad is that oxidation or dirty

a. Use a eraser to clean the pad.

•STEP 5.IF above-mentioned are all in normal condition then the problem could be

caused by M/B.
STEP 5.1.check F1 ,BQ1 ,R42, R43, D4 maybe slant.

STEP 5.2.check the voltage of BQ1.3 > 3.4V.
STEP 5.3.measure R42, R43 impedance is ok.
STEP 5.4.if step1 to step3 is ok, then change new BQ1
STEP 5.5.if above mention all in normal, then change a new IOTA.

8

VBAT

F1

1

SGM20F1E104-2A 2012

I/O1

4

G

DGND DGND

3

G

I/O2

2

No. G3240010

DAC

1 2

R42
33 0402

DGND

R43
10K 0402

1SS400 SC79

2

1 3

D4

2 1

DGND

BQ1

2SC5592 SC59

0.95mm

M1
MOTOR 4.0*8.8-1.5V-KHN4NZ1D

3930408801W

13. Micphone can not work:

•STEP 1.Check MIC failure?
a. Change MIC.

•STEP 2.Check M/B pad is that oxidation or dirty

a. Use a eraser to clean the pad.

•STEP 3.IF above-mentioned are all in normal condition then the problem could

be caused by M/B.

STEP 3.1.check EF2 is slant.

STEP 3.2.check C65、C66、C67、R59、R61、C68、C69、R58、R60 impedance.
STEP 3.3.if above mention all in normal, then change a new IOTA.

MICIP
MICIN

MICBIAS

AGND

C65 100nF 0402

C66

R58
330 0402

C68

10uF 0805

R60

330 0402

100nF 0402

R59
1K 0402

C69
100nF 0402

R61
1K 0402

EMIF01-10005W5 SOT323-5L

EF2

5

O1

4

O2

GND

1

I1

2
3

I2

AGND

C67
100pF 0402

1

MIC+

2

MIC-

OBG-13SA 42-C2

14. No sound on earphone?

•STEP 1.Check use Earphone is failure?
a. Change right Earphone.

•STEP 2. Check Earphone Jack is failure?
a. Change Earphone Jack.

•STEP 3.IF above-mentioned are all in normal condition then the problem could be

MIC1

9