Sony KJ-40W7*C Schematic

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL (COMMON)

Version Date Subject

1 3/2015 1st Issue.

RB2G CHASSIS

Segment: XM-L

LCD TV

9-888-170-01

For SM - Uni q u e , pleas e ref er :

9-888-170-Ax ( America )

9-888-170-Jx ( Japan )

9-888-170-Ex ( Europe )

9-888-170-Px ( Pan Asia )

SERVICE MANUAL (COMMON)

RB2G CHASSIS

Segment: XM-L

LCD TV

MODEL LIST

THIS SERVICE MANUAL CONTAINS COMMON INFORMA TION FOR BELOW REGIONS AND MODELS:

REGION ASIA JAPAN AMERICA EUROPE

MODEL KJ-32W7*C

KDL-32W7*C KJ-40W7*C KDL-40W7*C KJ-48W7*C KDL-48W7*C

3

Overvie w of C on trol B utton s .......... .. .. ... .. ... .. ... .. ... .. .... . .... . .... .. ... .. ... .. ... .. ..

TABLE O F CON TE NTS

Sect ion T itle Page

1. SAFETY NOTES 1-1. Warnings and Caution……………………………………… ……………… . 5

1-2. Caution Handling of LCD P ane l ......…………….................................... 5

1-3. Caution About the Lithium Batter………………………………… ……….. 6

1-4. Safety Ch e ck Out ........................……………......................................... 6

1-5. Leakage Te st .......................................................................................... 6

1-6. How to Find a Good Earth Ground………………………………………… 7 1-7. Lead Free Information….…………………………………………………… 7 1-8. Handli ng the Flexible Flat Cable (FFC)……………………………………. 7

2. SELF DIAGNOSTIC FUNCTION 2-1.

2-2. LED Display Control ………..................................................................... 9

2-3. LED Pattern………………........................................................................ 9

2-4. Standby LED Error Display…………………………………………………. 9

2-5. Triage Chart ............................................................................................ 10

3. TROU BL E S HOOT ING 3-1. No Power…….……………………………………………………………….. 11

3-2. LED Blinking……………….………………………………………............... 12

3-3. No Sound……………………………......................................................... 20

3-4. No Picture................................................................................................. 21

3-5. Side Buttons Malfunction……………………………………………………. 23 3-6. IR Remote Commander Malfunction……………………………………… 23 3-7. Light Sensor Error……………………………… ……………… ………… . 23 3-8. Network Malfunction: Ethernet (Wired)………………………… …………. 24 3-9. 3D-Glasses (Active) malfunction………… ………… ………… …… …….. 25 3-10. Wireless N etwork Malfunction………………… …………………… ……. 26 3-11. Bluetooth Malfunction……………………………………………………….. 27

8

Sect ion T itle Page

4. SERVICE ADJUSTMENTS

4-1. Accessing Service Mode ..................................................................... 28

4-2. Transition o f Each M icro’s S ervice Mode……….………………… …… 28 4-3. Change Data b y Service Mode 1…………………………… ……..……. 28 4-4. Change Data b y Service Mode 2…………………………… …………... 29

4-5. Restore WB / Gamma Adj. Data to B Board.………………………….. 31 4-6. WB Adjustment by Service Mode…………………………… ………….. 32 4-7. VCOM Adjustment (NFR-AUO/SDC/FXC Pane l) …………………………… 33

4-8. VCOM Adjustment (HFR-AUO /FXC Panel) …………………………………. 33

4-9. REC Setting………………………………………................................... 33

4-10. Reset Panel Operation Time………………………………… ……....... .. 34

4-11. Set to Shipping Condition……………………………………….............. 34

4-12. Summary of Service Control……………………………………….......... 34

4-13. Service Menu Tree……………………………………… ....... ........ ......... 35

4-14. How to Enter Self Diagnosis Display…………………………………… 36

5. DIAGRAMS

5-1. Circuit Board Location ......................................................................... 38

5-2. Block Diagram ………………………………………...................... 38

5-3. Connector Diagram ………………………………………...................... 46

Please refer Service Manual – Unique for below information :

-Safety Warnings

-Wire Dressing

-Circuit Board Location

-Disassembly and Exploded View.

4

SECTION 1

SA FETY NOTES

1-1. Warnings and Caution

1) These servicing instructions are for use by qualified service personnel only.

2) To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so.

3) An isolation transformer should be used during any service to avoid Possible shock hazard, because of live chassis. The chassis of this receiver is directly connected to the ac power line.

4) Be sure to follow these guidelines to protect your property and avoid causing serious injury :

• Carry the TV with an adequate number of people; larger size TVs require two or more people.

• Correct hand placement while carrying the TV is very important for safety and to avoid damages.

5) Components identified by shading and mark on the exploded views,

!

and in the parts list are critical for safe operation. Replace these components with Sony parts whose part numbers appear as shown in this manual or in supplements published by Sony. Circuit adjustments that are critical for safe operation are identified in this manual. Follow these procedures whenever critical components are replaced or improper operation is suspected.

1-2. Caution Handling of LCD Panel

When repairi ng the LCD Panel, make sure you are grounded w ith a wrist band. When repairi ng the LCD Panel on the wall, the panel must be secured using the 4 mounting hol es on the rear cover .

1) Do not press the panel or frame edge to avo id the risk of electr ic shock.

2) Do not scr atch or press on the panel w ith any sharp object s.

3) Do not leave the module in high temperat ure or in areas of high hum idity for an extended per iod of time.

4) Do not expose the LCD panel to direct sunlight.

5) Avoid contact with water . I t may cause short ci rcu it within the module.

6) Disco nnect the AC power when replaci ng the backl ight ( CCF L) or inverter cir cuit . (Hi gh voltage occur s at the inver ter ci rcui t at 650Vrms)

7) Always cl ean the LCD panel with a soft cloth mater ial .

8) Use care when handli ng the wir es or connectors of the inver ter ci rcui t. Damaging the w ir es may cause a short circu it.

9) Protect the panel from ESD to avoid damaging the elect roni c circuit (C-MOS).

10) Dur i ng the r epai r , DO NOT l eave the Pow er On or Burn-i n period for more than 1 hour w hil e the T V i s face dow n on a cloth.

Figure 1. TV is faced down on a cloth during repair.

5

Safety Notes

1-3. Caution About the Lithium Battery

1) Danger of explosion if battery is incorrectl y replaced. Replace only with the same or equivalent type.

2) Outer case broken battery shoul d not contact to water.

1-4. Safety Check-Out

After correcting the original service problem, perform the following safety checks before releasing the set to the customer:-

1) Check the area of your repair for unsoldered or poorly soldered connections. Check the entire board surface for solder splashes and bridges.

2) Check the inter board wiring to ensure that no wires are pinched or contact high-wattage resistors.

3)Check all control knobs, shields, covers, ground straps and mounting hardware have been replaced. Be absolutely certain you have replaced all the insulators.

4) Look for unauthorized replacement parts, particularly transistors that were installed during a previous repair. Point them out to the customer and recommend their replacement.

5) Look for parts which, though functioning show obvious signs of deterioration. Point them out to the customer and recommend their replacement.

6) Check the line cords for cracks and abrasion. Recommend the replacement of any such line cord to the customer.

7) Check the antenna terminals, metal trim, metalized knobs, screws and all other exposed metal parts for AC leakage. Check leakage test as described next.

8. For safety reasons, repairing the Power board and/or Inverter board is prohibited.

1-5.Leakage Test

The AC leakage from any exposed m etal par t to earth ground and from all exposed metal par ts to any exposed metal part having a retur n to chassi s must not exceed 0.5mA (500 micr oamperes) . Leakage cu rrent can be measur ed by any one of the three m ethods:-

1) A commerci al leakage t ester such as the SI M PSON 229 or RCA WT540A. Follow the manufacturers instr uctions to use those instruct ions.

2) A battery-operate d AC milliampmeter The DATA PRECISI ON 245 digital multimeter is suitable for this job.

3) Measu ring the volt age dr op across a resi stor by means of a VOM or battery operated AC voltmeter. The 'li mi t' indication is 0.75V so analog m eters m ust have an accurate low volt age scale. T he SIM PSON' S 250 and SANWA SH63TRD are exampl es of passi ve VOM s that are sui table. N early all battery operated digi tal mul timeter that have a 2 VAC range are sui table. (see Figur e 2.)

Figure 2. AC voltmeter to check AC leakage

1-6. How to Find a Good Earth Ground

1) A cold-water pi pe is a guaranteed ear th ground; t he cover-pl ate retaini ng screw on most AC outlet boxes i s also at earth ground.

2) If the retaining scr ew is to be used as your earth ground, veri fy that it is at ground by measur i ng the r esistance between it and a cold-w ater pi pe with an ohmmeter. T he readi ng should be zer o ohms.

3) I f a cold-w ater pi pe is not accessi ble, connect a 60- to 100-watt t roublelight (not a neon lamp) between the hot side of the recept acle and the retaining scr ew. Tr y both slots, if necessa ry, to locate the hot si de on the line; the l am p shoul d l i ght at normal br i l l i ance i f the screw is at gr ound pot enti al (see Figur e 3).

Figure 3. Checking for earth ground.

6

Safety Notes

1-7. Lead Free Information

The circui t boards used i n these model s have been pr ocessed using Lead Free Solder. The boards ar e identified by the LF logo loca ted close to the board designation.

Pleas e hol d rei nfor ce men t b oard an d plunge it to depths.

Main Board

Please pull out FFC while pushing the but ton of both end s at the s ame tim e.

Main Board

The servici ng of these boards r equires special precautions. It is strongly recommended to use Lead Free Solder mat erial in order to guarantee opt imal

Figure 4: LF Logo

Figure 5: LF logo on circuit board

quality of new solder joi nts.

1-8. Handling the FLEXIBLE FLAT CABLE (FFC)

 When you insert / pull out FFC, please grasp a reinforcement board and main

body of FFC.

< Insertion>

Release Button

of Connector

FFC connector broken if pull out FFC without press and hold both Release Button of connector. S ymptom 5X blinking will be appear due to improperly seated .

7

Self Diagnostic Function

2-1. Overview of Control Buttons

2-1-1.

FRONT

REAR OF TV

SECTION 2

SELF DIAGNOSTIC FUNCTION

TV CONTROLS/ TERMINALS/ INDICATOR

Remote Control Sensor / Light sensor / * Illumination LED / 3D Sync Transmitter

Illumination lights up or blinks in different col ours ac cor di n g t o the s tat us of the T V ( details refer to 2-2. LE D Dis play Control

HOME Press to display the TV Home Menu.

Power Turn the TV on or switch to standby mode

CH+/- (Channel) / / ,

+/- (Volume) / / . Press to select the next or previous channel. Press to adjust the volume. In TV Home Menu: buttons will work as , , , .

INPUT SELECT / SELECT/ CONFIRM

Press to select the next or previous channel. In TV Home Menu: buttons will work as (select/confirm)

8

Self Diagnostic Function

2-2. LED Display Control

White Center

Status

Pow er Of f

( by power saving switch off and *1)

Pow er On White Off Off

STBY/i.LINK STBY/PC STBY

( by rem ote c ontrol off onl y )

Sky pe C al l R ec ei ve White White one shot Off

Pi cture Off White looping White one shot Off

Devi ce C onn ect ion White Cyan on e shot Off

Pow er ON A n i mati on White White one shot Off

Sl eep T i mer/ O n

Tim er / Rem in der /R EC Ti m er/ P hot o

Frame

( Power On )

On Timer/ Reminder/REC Tim er

( Deep Standby )

Failure Off

Aging mode White Green Blinking Off Blinking:0.5sec On / 0.5sec Off

End of Aging mode White Green Blinking Off Blinking:3sec On / 3sec Off

Soft war e Updat in g white blinking white blinking off

Software Updating finish White Blue lit off

Test R eset White white blinking

Err or of pan el I D White Green Blinking

REC (SCART REC & HDD

REC/LIVE PAUSE) [AEP/J on l y ]

ePOP/

Shop Illumination

LED

(applicable for

HSC2 only)

Off Off Off

White

Off Off Amber

White

White Cyan l oop Off

Side RGB LED

Amber

One s hot -> Li t*2

Red

Blinking

Red(Pink)

One s hot -> Li t*2

Side Amber

LED

*1 power switch off (by side

Off *2 One S hot is only user act i on.

The number of LED blinking

Off

Amber

blinking

Amber

Blinking

Blinking:0.5sec O n / 0.5sec Off

Off *2 One S hot is only user act i on.

Remarks

key)

Aft er 5 m i nu t es , si d e amber

LED On

ind i c at es c au se of f ai l u re

( refer to Led Error / Triage

chart)

2-3. LED Pattern

When safety shutdown occurs, Standby LED display reports the cause by using the lightning patterns as indicated below

.

2-4. Standby LED Error Display

Smart

Core RED

LED

blinking

count

2x

3x

4x

5x

6x Backlight failure [BACKLIGHT] LED driver (LD) board

7x

8x

9x

Main 19.5V failure [MAIN_POWE] * This failure is not saved

Main 5.0/3.3/1.0 failure [DC_ALERT] * 5.0/1.0V failures are not saved.

Audio amp. protection [AUD_ERR]

HDMI equalizer/switch I2C NACK [HDMI_EQ] * There is Temp. sensor on the same I2C bus

Tuner or demodulator I2C NACK [TU_DEMOD]

AFE device I2C NACK [AFE_I2C]

AFE device SPI NACK [AF E_SPI] * o nl y for AEP,C H

LED driver failure [LD_ERR]

LED voltage error [VLED]

Panel ID EEPROM I2C NACK (Also panel power failure is a suspect) [P_ID_ERR]

(*detect at startup sequence only)

Over temperature protecti on [T EMP_ERR] Temp. sensor I2C NACK [TEMP_ERR]

Software Error (Also the main board’s memor y or CAM module is a suspect)

Tuner board error [TU_BOARD]

Detection Items

 Power Adapter  BAXL Board

 BAXL Board

 BAXL Board  Speaker

 BAXL Board

 BAXL Board  Tuner Board

LED driver (LD) board  Panel Module

 Panel module  Tcon board G** Board  BAXL Board

 BAXL Board

Tuner Board

Board Error Item

0.5sec

Example: The figure above shows LED display when SHUTDOW N is caused by Audio Error. It repeats f lashing f or a specified number of t imes in 0.5sec/c ycl e and has a 3 s econds interval of lighting off. Please note that a 3 seconds interval of lighting off is fixed regardless of abnormal state types.

0.5sec

3.0sec 3.0sec

B** Board Type

Size

32” 40” 48”

H**

BAXL BAXL BAXL

G** Board Type

Not applicable HSC3 TUS TUW Not applicable HSC3 TUS TUW Not applicable HSC3 TUS TUW

Board

Type

Tuner Board

America/

Asia/Europe

Japan

9

response

dots

Self Diagnostic Function

2-5. Tri age C hart

Reference

BAXL Board

2

p

3 4 5 6 7 8 9 10

l p p l l

TU Board p

H* Board

Speaker

p

Skype Module

Wi-fi Module

BT Module

LD Board

LVDS FFC

Tcon

LCD Panel

Symptoms - Shutdown. Power LED

blinking red diagnostics sequences

No

Power

Video

- missing or distorted

Remote Network Audio Skype

No White

Power

LED &

does not

to remote

Stationary

coloured

lines or

No

video One of Inputs

No

video

all

Inputs

No

Remote

Wireless

can't

connect

(Dead

Set)

p

l

p p l l p p l p p p

p

l l

l

p p

p l p

l l l p

p

l

p p

p

No Audio

Skype

Can't Work

p

l

p

Smart

Core

Smart

Core no

LED (Set

is still

alive)

l

Bluetooth

(BT)

Bluetooth /

One Step

Remote

(OSR) can 't

connect

l

Problem

Power Power LD

Panel

(Tcon)

Panel

(Backlight) TEMP

Software

Emitter

FAN

Audio

(N/A)

Local

I2C

B** Board Type

Most likely defective part Secondary possible defective part

Not Applicable

Size

32” 40” 48”

BAXL BAXL BAXL

G** Board Type

Not applicable HSC3 TUS TUW Not applicable HSC3 TUS TUW Not applicable HSC3 TUS TUW

H**

Board

Type

Tuner Board

America/

Asia/Europe

Japan

10

Troubleshooting

3-1. NO POWER

3-1-1. NO POWER

SECTION 3

TROUBLESHOOTING

3-1-2. NO POWER – LD Board

No P ow er

Check STBY 3.3V

L9107 or C9179

OK

B* Board

NG

Replace

LD-board

to B-board

harness

OK

Harness

broken

DC/DC converter check

NO POWER: Ayu2 control

NG

Replace

LD-board

NG

Board PWB ( A side ) Detail

OK

LD- board

broken

No Power

Check F1002,

Is the voltage > 18V?

Yes

Check D1001,

Is the voltage > 18V?

Yes

Check Q1004,

Is the voltage > 18V?

Yes

Check C1042,

Is the voltage > 3.3V?

Yes

Check connection

Harness CN1001

OK

Check C1024,

Is the voltage > 12V?

Yes

No

NG

No

DC Adaptor

broken

FUSE F1002

broken

MOSFET Q1004

broken

Case 1 :

Check 3.3V DDCON

Harness CN1001

broken

Case 2 :

Check 12V DDCON

B* Board

Symptoms

NO POWER: DC/DC converter check

B** Board Type

Size

32”

C9179

L9179

40” 48”

BAXL BAXL BAXL

G** Board Type

Not applicable HSC3 TUS TUW Not applicable HSC3 TUS TUW Not applicable HSC3 TUS TUW

H**

Board

Type

Tuner Board

America/

Asia/Europe

Japan

11

Troubleshooting

Case 1 : Check 3.3V DDCON

Check 3.3V DDCON

Check F1004,

Is the voltage > 18V?

Yes

Remove Harness CN1001

and Check C1042,

Is the Power line

short to ground?

No

Remove Harness CN1001

and Check C1042,

Is the voltage > 3.3V?

Yes

B* Board

No

Yes

No

FUSE F1004

broken

DDCON IC1002

broken

Case 2 : Check 12V DDCON

Check 12V DDCON

Check F1003,

Is the voltage > 18V?

Yes

Remove Harness CN1001

and Check C1024,

Is the Power line

short to ground?

No

Connect Harness CN1001

and Check Pin 3 IC1001,

Is the voltage > 3V?

No

B* Board

No

Yes

FUSE F1003

broken

DDCON IC1001

broken

DDCON IC1001

broken

Symptoms

NO POWER: DC/DC converter check

12

Troubleshooting

Board Name Board PWB (A side) Detail

LD-XM-L

CN1001 F1002 D1001 Q1004

Detail

F1002

CN1001

Measuring

Point

D1001

Q1004

13

Troubleshooting

Board Name Board PWB (A side) Detail

LD-XM-L

IC1002 C1042

Detail

F1004

IC1002

C1042

Measuring

Point

14

Troubleshooting

Board Name Board PWB (A side) Detail

LD-XM-L

F1003 C1024 IC1001

Detail

F1003

C1024

IC1001

Measuring

Point

15

Troubleshooting

3-1-3. NO POWER: Ay u2L control

No Power

Check STBY_+3.3V

at AYU2L

(H15, H16, H17 pin

 C7376)

OK

Check STBY_+1.8V

at AYU2L

(H19 pin

 C7374)

OK

Check STBY_+1.0V

at AYU2L

(J15, J16, J17 pin

 C7380)

OK

Che ck X tal o scilla tio n

X7301, 32.768kHz

(A23, B23 pin

 R7396)

NG

look for where

STBY_+3.3V is NG.

look for where

STBY_+1.8V is NG.

look for where

STBY_+1.0V is NG.

Replace X7301 or Ayu2L

Check AC_MON

at AYU2

(C11 pin  C7334)

OK

Check MAIN_PWR

at AYU2

(C13 pin  C7315)

OK

Check +19.5V(Adapter)

Or +12V(G-Board)

at CN9101 pin21

OK

It might be power supply problem

Please refer "DC/DC converter check" sheet.

NG

Look for AC_MON line

at CN9101 pin12/C9131 or

Adapter/ G board failure

Look for MAIN_POWER line

at CN9101 pin11

or replace AYU2

Adapter/

G-board

OK

16

Troubleshooting

Board Name

Board PWB ( A side ) Detail

BAX-L

1. C7376

2. C7374

3. C7380

4. R7396

5. C7334

6. C7315

1, 3, 4

5,6

2

1, 3, 4

5, 6

C7376

C7380

2

C7374

AYU2L

X7301

R7396

C7334

C7315

17

Troubleshooting

Board Name

Board PWB ( A side ) Detail

BAX-L

1. C7376

2. C7374

3. C7380

4. R7396

5. C7334

6. C7315

7. CN9101

1, 3, 4

7. CN9101

5,6

2

1, 3, 4

5, 6

C7376

C7380

2

C7374

AYU2L

X7301

R7396

7. CN9101

C7334

Pin12

C9131

C7315

Pin11

Pin21

18

Troubleshooting

3-1-4. NO POWER: DC/DC converter check

START

CONDITION SYMPTOM

19.5V_SS not availa ble. Board will not t u r n O N . N o bli nk ing. STBY_+3.3V, STBY_+1.8V and STBY_+1.0V not

available.

19.5V_HOLD not available. 2X blinking. +5.0V_MAIN not available. 2X blinking. D+1.0V, +5.0V_VBUS, +3.3V_MAIN_1,

DDR3_+1.5V or +1.8V_MAIN not availa ble.

D+1.1V not available.

Board will not t u r n ON . No bl inking.

3X blinking.

Board turn ON. No blinking at first, but after few minutes (±5min) 8X blinking occur.

IC9106

output or

input short

to GND?

C9302,

C9214

NO

IC9101

output or

input short

to GND?

SL9104,

C9114

NO

Q9108

output or

input short

to GND?

SL9110,

C9158

YES

YES YES

Remove

IC9106.

Still short?

NO

IC9106 broken

Remove

IC9101.

Still short?

NO

IC9101 broken

Remove

Q9108. Still

short?

NO

YES

Other part in

+5.0V_VBUS line or

19.5V_SS line broken.

Other part in

+5.0V_MAIN line or

19.5V_SS line broken.

Other part in D+1.0V

line or +5.0V_MAIN

line broken. ( AYU2L

maybe broken)

IC9103

output or

input short

to GND?

SL9110,

C9147

NO

IC9104

output or

input short to

GND?

SL9107,

C9155

NO

IC9105

output or

input short

to GND?

SL9108,

C9163

NO

YES YES

Remove IC9103.

Still short?

NO

IC9103 broken

Remove IC9104.

Still

short?

NO

IC9104 broken

Remove IC9105.

Still short?

NO

IC9105 broken

Other part in D+1.0V

line or +5.0V_MAIN

line broken. ( AYU2L

maybe broken)

Other part in +3.3V_MAIN_1 line or +5.0V_MAIN line

broken.

Other part in D+1.1V

line or +5.0V_MAIN

line broken.

NO

Q9108 broken

SHEET 2

19

Troubleshooting

3-1-4. NO POWER: DC/DC converter check

SHEET 2

IC9104

output or

input short

to GND?

SL9109,

C9171

NO

Q9107

output or

input short

to GND?

SL9106,

C9148

NO

YES

Remove

IC9104. Stil l

short?

NO

IC9104 broken

Remove

Q9107. Stil l

short?

NO

Q9107 broken

YES

+1.5V_DDR line or

+5.0V_MAIN line

broken. (DDR maybe

+3.3V_MAIN line or +3.3V_MAIN_1 line

Other part in

broken)

Other part in

broken.

Check fuse F9101, F9102, F9104, F9105,

F9106.

OK

SHEET 3

OPEN

High current surge

20

Troubleshooting

3-1-4. NO POWER: DC/DC converter check

Sheet 3

19.5V_SS,

19.5V_HOLD OK?

C9196, C9197

YES

STBY_+3.3V

OK?

L9107

YES

STBY_+1.8V,

STBY_+1.0V

OK?

C7374,C736

9

YES

+5V_VBUS

(IC9106) OK ?

C9214

YES

+5V_MAIN

(IC9101) OK ?

SL9104

YES

Turn ON board

NO

Refer AYU2L manual

MAIN_

PWR

high

NO

service sheet

YES

Check LD Board or

Harness

Check LD Board or

Harness

Check IC7304 ( 1.8V)

or IC7305 (1.0V)

IC9106 broken

IC9101 broken

D+1.0V

(IC9103) OK ?

SL9110

YES

+3.3V_MAIN_1

(IC9104) OK ?

SL9107

YES

D+1.1V

(IC9105) OK ?

SL9108

YES

+1.8V_MAIN

OK?

C9202

YES

+1.5V_DDR

(IC9104) OK ?

SL9109

YES

+3.3V_MAIN

(Q9107) OK ?

SL9106

YES

All

DDCON

OK

NO

SYSTE M1_P

WR

high

NO

Refer AYU2L manual

service sheet

SYSTE M2_P

WR

high

NO

Refer AYU2L

manual service

sheet

SYSTE M3_P

WR

high

NO

Refer AYU2L manual

service sheet

IC9103 broken

YES

IC9104 broken

IC9105 broken

YES

IC9201 broken

IC9104 broken

YES

Q9107 broken

21

4

1

2

3

22

1

Q9108

MAIN_PW

R

C9158

F9105

L9107

F9101

C9114

19.5V_S S

F9102

19.5V_HOL D

C9302

IC9101

SL9104

SL9110

IC9106

C9147

IC9103

SYSTEM1_PWR

C9214

23

2

C9202

C9148

IC9201

Q9107

C7369

C7374

IC7305

SL9106

IC7304

24

3

C9155

SL9107

F9104

IC9104

C9171

SYSTEM

3_PWR

SL9109

25

4

SL910

8

IC9105

F9106

C9163

26

Troubleshooting

3-1-5. NO POWER – AYU2L failur e

AYU2L Fail Suspected

eMMC / RawNAND erase

Product SW rewrite

Recover?

No

AYU2L LOG is

displayed

No

(1) Check DDR &

eMMc / RawNAND

interface OK?

No

Replace Board

Yes

Product SW

writing issue

Check DDR

using CheckSW

Replace

AYU2L or Board

Find Some

Error message

Yes

DDR device fail

From the error message, we can find which device has failure. Move to device analysis phase.

No

Data fails are esp ecia lly in environment area. If this Area has broken, check soft cannot run

Check

eMMC / RawNAND

using CheckSW

No

eMMC/ RawNAND

data fail

Find Some

Error message

No

Store SW log,

Check SW

behaviors.

Erase

eMMC/ RawNAND

In this case, corrupted data are written to eMMC/ NAND flash in proper way. So, we have to check the logs of exce ption or errors. Erase eMMC/ RawNAND is a last option. If st ill N G afte r erase, please replace eMMC/RawNAND

Yes

Check error message

It is unacceptable

error?

Yes

Erase & Replace

eMMC/ RawNAND

Product SW write

If still NG after SW rewrite, please go to (1) Check MMC/RawNAND interface

27

Troubleshooting

3-1-6. NO POWER – AYU2L replacement

AYU2L

replacement flow

eMMC / RawNAND erase

AYU2L replacement

Data on eMMC/NAND need to be erase first before changing AYU2L.

Product SW write

Recover?

Yes

AYU2L issue

No

Board Issue

28

Troubleshooting

3-2. LED BLINKING

3-2-1. LED Blinking: 2x (Main power Error)

BAX-L board (XM-L)

2-time blinking

Check 19.5V_HOLD at pin 18 of CN9101

on B* Board

OK

Turn off power

IC9101 output

or input short to GND?

SL9104, C9114

OK

Turn on power

+5V_MAIN

(IC9101) OK?

SL9104

OK

NG

Check

Harness/connection

LD*Board to B*Board

OK

Harness

Remove IC9101.

Still sho rt?

OK

IC9101 broken

MAIN_PWR high?

OK

IC9101 broken

NG

Other part in

+5.0V_MAIN line or

19.5V_SS line broken.

Refer AYU2L

Troubleshooting

Replace

LD* Board

OK

LD* Board

NG

AC Adapter

B* Board

Note: Board Details refer Section 3 main page.

29

Troubleshooting

3-2-1. LED Blinking: 2x (Main power Error)

Troubleshooting References

1

30