Sony KJ-40W7*C Schematic

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL (COMMON)

RB2G CHASSIS

Segment: XM-L

Version	Date	Subject
1	3/2015	1st Issue.

LCD TV

9-888-170-01

For SM - Unique , please refer :

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 INFORMATION 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

TABLE OF CONTENTS

Section Title		Page
1. SAFETY NOTES
1-1.	Warnings and Caution……………………………………………………….	5
1-2.	Caution Handling of LCD Panel ......……………....................................	5
1-3.	Caution About the Lithium Batter…………………………………………..	6
1-4.	Safety Check Out ........................…………….........................................	6
1-5.	Leakage Test ..........................................................................................	6
1-6.	How to Find a Good Earth Ground…………………………………………	7
1-7.	Lead Free Information….……………………………………………………	7
1-8.	Handling the Flexible Flat Cable (FFC)…………………………………….	7
2. SELF DIAGNOSTIC FUNCTION
2-1.	Overview of Control Buttons ...................................................................	8
2-2.	LED Display Control ……….....................................................................	9
2-3.	LED Pattern………………........................................................................	9
2-4.	Standby LED Error Display………………………………………………….	9
2-5.	Triage Chart ............................................................................................	10
3. TROUBLE SHOOTING
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 Network Malfunction…………………………………………….	26
3-11.	Bluetooth Malfunction………………………………………………………..	27

Section Title		Page
4. SERVICE ADJUSTMENTS
4-1.	Accessing Service Mode .....................................................................	28
4-2.	Transition of Each Micro’s Service Mode……….………………………	28
4-3.	Change Data by Service Mode 1…………………………………..…….	28
4-4.	Change Data by 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 Panel) ……………………………	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

SAFETY 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 repairing the LCD Panel, make sure you are grounded with a wrist band. When repairing the LCD Panel on the wall, the panel must be secured using the 4 mounting holes on the rear cover.

1)Do not press the panel or frame edge to avoid the risk of electric shock.

2)Do not scratch or press on the panel with any sharp objects.

3)Do not leave the module in high temperature or in areas of high humidity for an extended period of time.

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

5)Avoid contact with water. It may cause short circuit within the module.

6)Disconnect the AC power when replacing the backlight (CCFL) or

inverter circuit. (High voltage occurs at the inverter circuit at 650Vrms)

7)Always clean the LCD panel with a soft cloth material.

8)Use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short circuit.

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

10)During the repair, DO NOT leave the Power On or Burn-in period for more than 1 hour while the TV is face down 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 incorrectly replaced. Replace only with
	the same or equivalent type.	3) Measuring the voltage drop across a resistor by means of a VOM or battery
	2) Outer case broken battery should not contact to water.	operated AC voltmeter. The 'limit' indication is 0.75V so analog meters must
	1-4. Safety Check-Out	have an accurate low voltage scale. The SIMPSON'S 250 and SANWA SH-
		63TRD are examples of passive VOMs that are suitable. Nearly all battery
	After correcting the original service problem, perform the following
		operated digital multimeter that have a 2 VAC range are suitable.
	safety checks before releasing the set to the customer:-
		(see Figure 2.)

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									Figure 2. AC voltmeter to check AC leakage
	recommend their replacement.
										1-6. How to Find a Good Earth Ground
	5) Look for	parts	which,	though		functioning show		obvious signs	of
										1) A cold-water pipe is a guaranteed earth ground; the cover-plate retaining
	deterioration.	Point	them	out	to	the	customer and	recommend their
										screw on most AC outlet boxes is also at earth ground.
	replacement.
										2) If the retaining screw is to be used as your earth ground, verify that it is at
	6) Check the line		cords	for	cracks		and abrasion. Recommend		the
										ground by measuring the resistance between it and a cold-water pipe with an
	replacement of any such line cord to the customer.
										ohmmeter. The reading should be zero ohms.
	7) Check the antenna terminals, metal trim, metalized knobs, screws and all
										3) If a cold-water pipe is not accessible, connect a 60to 100-watt trouble-
	other exposed metal parts for AC leakage. Check leakage test as described
										light (not a neon lamp) between the hot side of the receptacle and the
	next.
										retaining screw. Try both slots, if necessary, to locate the hot side on the line;
	8. For safety reasons, repairing the Power board and/or Inverter board is
										the lamp should light at normal brilliance if the screw is at ground potential
	prohibited.
										(see Figure 3).
	1-5.Leakage Test
	The AC leakage from any exposed metal part to earth ground and from all									Figure 3. Checking for earth
	exposed metal parts to any exposed metal part having a return to chassis must
	not exceed 0.5mA (500 microamperes).									ground.
	Leakage current can be measured by any one of the three methods:-

1)A commercial leakage tester such as the SIMPSON 229 or RCA WT540A. Follow the manufacturers instructions to use those instructions.

2)A battery-operated AC milliampmeter The DATA PRECISION 245 digital multimeter is suitable for this job.

6

Safety Notes

1-7. Lead Free Information

The circuit boards used in these models have been processed using Lead Free Solder. The boards are identified by the LF logo located close to the board designation.

Figure 4: LF Logo

Figure 5: LF logo on circuit board

The servicing of these boards requires special precautions. It is strongly recommended to use Lead Free Solder material in order to guarantee optimal quality of new solder joints.

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

When you insert / pull out FFC, please grasp a reinforcement board and main body of FFC.

Please hold reinforcement board and plunge it to depths.

Main Board

< Insertion>

Release Button

of Connector

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

Please pull out FFC while pushing the button of both ends at the same time.

Main Board

<Pull out>

7

Self Diagnostic Function

		SECTION 2
		SELF DIAGNOSTIC FUNCTION
2-1. Overview of Control Buttons
2-1-1.
	FRONT	TV CONTROLS/ TERMINALS/ INDICATOR

Remote Control Sensor /

Light sensor / * Illumination LED/ 3D

Sync Transmitter

Illumination lights up or blinks in different colours according to the status of the TV

( details refer to 2-2. LED Display Control

REAR OF TV

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

2-4. Standby LED Error Display

White Center

Status

LED

Side RGB LED

Side Amber

Remarks

Smart

(applicable for

LED

Core RED

Detection Items

Board Error Item

Power Off

HSC2 only)

*1 power switch off (by side

LED

Off

Off

Off

blinking

( by power saving switch off and *1)

key)

count

Power On

White

Off

Off

Main 19.5V failure [MAIN_POWE]

 Power Adapter

STBY/i.LINK STBY/PC STBY

Off

Off

Off

2x

( by remote control off only )

* This failure is not saved



BAXL Board

Skype Call Receive

White

White one shot

Off

Main 5.0/3.3/1.0 failure [DC_ALERT]



BAXL Board

Picture Off

White looping

White one shot

Off

* 5.0/1.0V failures are not saved.

Device Connection

White

Cyan one shot

Off

Audio amp. protection [AUD_ERR]



BAXL Board

Power ON Animation

White

White one shot

Off



Speaker

Sleep Timer/On

HDMI equalizer/switch I2C NACK [HDMI_EQ]



BAXL Board

Timer/Reminder/REC Timer/Photo

Amber

White

Off

*2 One Shot is only user action.

* There is Temp. sensor on the same I2C bus

Frame

One shot -> Lit*2

3x

( Power On )

Tuner or demodulator I2C NACK [TU_DEMOD]



BAXL Board

On Timer/Reminder/REC Timer

Off

Off

Amber

After 5 minutes, side amber



Tuner Board

( Deep Standby )

LED On

AFE device I2C NACK [AFE_I2C]

 BAXL Board

The number of LED blinking



Tuner Board

Failure

Off

Red

Off

indicates cause of failure

Blinking

( refer to Led Error / Triage

AFE device SPI NACK [AFE_SPI] * only for AEP,CH

 BAXL Board

chart)

 Tuner Board

Aging mode

White

Green Blinking

Off

Blinking:0.5sec On / 0.5sec Off

LED driver failure [LD_ERR]

End of Aging mode

White

Green Blinking

Off

Blinking:3sec On / 3sec Off

4x

LED driver (LD) board



Panel Module

Software Updating

white blinking

white blinking

off

LED voltage error [VLED]

Software Updating finish

White

Blue lit

off

 Panel module

Test Reset

White

white blinking

Amber

Panel ID EEPROM I2C NACK (Also panel power failure is a



Tcon board

blinking

5x

suspect) [P_ID_ERR]

G** Board

Amber

(*detect at startup sequence only)

Error of panel ID

White

Green Blinking

Blinking:0.5sec On / 0.5sec Off



BAXL Board

Blinking

REC (SCART REC & HDD

White

Red(Pink)

Off

*2 One Shot is only user action.

6x

Backlight failure [BACKLIGHT]

LED driver (LD) board

REC/LIVE PAUSE) [AEP/J only]

One shot -> Lit*2

ePOP/

White

Cyan loop

Off

7x

Over temperature protection [TEMP_ERR]



BAXL Board

Shop Illumination

Temp. sensor I2C NACK [TEMP_ERR]

2-3. LED Pattern

8x

Software Error (Also the main board’s memory or CAM module is a



BAXL Board

When safety shutdown occurs, Standby LED display reports the cause by using the lightning

suspect)

patterns as indicated below.

9x

Tuner board error [TU_BOARD]

Tuner Board

B** Board Type

H**

Tuner Board

3.0sec

3.0sec

Size

G** Board Type

Board

0.5sec

America/

Japan

Type

0.5sec

Asia/Europe

32”

BAXL

Not applicable

HSC3

TUS

TUW

Example: The figure above shows LED display when SHUTDOWN is caused by Audio

40”

BAXL

Not applicable

HSC3

TUS

TUW

Error. It repeats flashing for a specified number of times in 0.5sec/cycle and has a 3 seconds

48”

BAXL

Not applicable

HSC3

TUS

TUW

interval of lighting off. Please note that a 3 seconds interval of lighting off is fixed regardless of abnormal state types.

9

Self Diagnostic Function

2-5. Triage Chart

Symptoms - Shutdown. Power LED

No

Video

Remote

Network

Audio

Skype

Smart

Bluetooth

blinking red diagnostics sequences

Power

- missing or distorted

Core

(BT)

No White

Power

No

Smart

Bluetooth /

Reference

LED &

Stationary

No

Wireless

Core no

One Step

does not

coloured

video

video

No

Skype

2

3

4

5

6

7

8

9

10

can't

No Audio

LED (Set

Remote

response

lines or

One of

all

Remote

Can't Work

connect

is still

(OSR) can't

to remote

dots

Inputs

Inputs

alive)

connect

(Dead

Set)

BAXL Board

p

•

p

p

•

•

p

p

•

•

p

p

•

p

p

p

TU Board

p

p

•

p

•

•

p

H* Board

•

•

Speaker

p

•

Skype Module

•

Wi-fi Module

•

•

p

BT Module

•

LD Board

•

p

LVDS FFC

p

p

p

p

Tcon

p

•

p

p

p

p

LCD Panel

•

•

•

p

•

p

Panel

Panel

Soft-

Power

Power

LD

(Tcon)

(Backlight)

TEMP

ware

Emitter

Problem

FAN

Audio

(N/A)

Local

I2C

B** Board Type

H**

Tuner Board

Most likely defective part

Size

G** Board Type

Board

Type

America/

Japan

Secondary possible defective part

Asia/Europe

32”

BAXL

Not applicable

HSC3

TUS

TUW

Not Applicable

40”

BAXL

Not applicable

HSC3

TUS

TUW

48”

BAXL

Not applicable

HSC3

TUS

TUW

10

Troubleshooting

SECTION 3

3-1. NO POWER

TROUBLESHOOTING

3-1-1. NO POWER

3-1-2. NO

POWER – LD Board

No Power

No Power

Check F1002,

No

DC Adaptor

Check STBY 3.3V NG

Replace

NG

Replace

OK

LDboard

Is the voltage > 18V?

broken

LD-board

Yes

L9107 or C9179

to B-board

LD-board

broken

harness

Check D1001,

No

FUSE F1002

OK

Is the voltage > 18V?

broken

OK

Harness

Yes

NG

broken

Check Q1004,

MOSFET Q1004

No

Is the voltage > 18V?

broken

Yes

B* Board

Check C1042,

No

Case 1 :

Is the voltage > 3.3V?

Check 3.3V DDCON

DC/DC converter check

Yes

Harness CN1001

Check connection

NG

NO POWER: Ayu2 control

Harness CN1001

broken

OK

Board PWB ( A side )

Detail

Check C1024,

No

Case 2 :

Is the voltage > 12V?

Check 12V DDCON

Yes

B* Board

Symptoms

NO POWER: DC/DC converter check

B** Board Type

H**

Tuner Board

Size

G** Board Type

Board

America/

Type

Japan

Asia/Europe

32”

BAXL

Not applicable

HSC3

TUS

TUW

40”

BAXL

Not applicable

HSC3

TUS

TUW

C9179

L9179

48”

BAXL

Not applicable

HSC3

TUS

TUW

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	FUSE F1004
	broken
Yes	DDCON IC1002
	broken

No	DDCON IC1002
	broken

Symptoms

NO POWER: DC/DC converter check

Case 2 : Check 12V DDCON

Check 12V DDCON

	Check F1003,		No	FUSE F1003
	Is the voltage > 18V?			broken
		Yes
	Remove Harness CN1001
	and Check C1024,		Yes	DDCON IC1001
	Is the Power line			broken
	short to ground?
		No
	Connect Harness CN1001		Yes	DDCON IC1001
	and Check Pin 3 IC1001,
				broken
	Is the voltage > 3V?
		No
	B* Board
			Symptoms	NO POWER: DC/DC converter check

12

Troubleshooting

Board Name Board PWB (A side)	Detail

	LD-XM-L
	CN1001	Detail	F1002
	F1002
			CN1001
	D1001
	Q1004

D1001

Q1004

Measuring

Point

13

Troubleshooting

Board Name Board PWB (A side)	Detail

	LD-XM-L
	IC1002
	C1042	Detail	F1004
	F1004
			IC1002

C1042

Measuring

Point

14

Troubleshooting

Board Name Board PWB (A side)	Detail

LD-XM-L
F1003
C1024
IC1001	F1003	C1024
	Detail

IC1001

Measuring

Point

15

Troubleshooting

3-1-3. NO POWER: Ayu2L 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

Check Xtal oscillation X7301, 32.768kHz (A23, B23 pin

 R7396)

OK

NG

NG

NG

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	NG	Look for AC_MON line
at AYU2		at CN9101 pin12/C9131 or
(C11 pin  C7334)		Adapter/ G board failure
OK

Check MAIN_PWR

at AYU2

(C13 pin  C7315)

OK

Check +19.5V(Adapter)

Or +12V(G-Board)

at CN9101 pin21

OK

NG Look for MAIN_POWER line at CN9101 pin11

or replace AYU2

NG

Adapter/

G-board

It might be power supply problem Please refer "DC/DC converter check" sheet.

16

Troubleshooting
Board	Board PWB ( A side )				Detail
Name
BAX-L			1, 3, 4	C7376	2
1. C7376		5,6	AYU2L		C7374
2. C7374	1, 3, 4	2		C7380
3. C7380
4. R7396
5. C7334					X7301
6. C7315				R7396
			5, 6

C7334

C7315

17

Troubleshooting
Board	Board PWB ( A side )				Detail
Name
BAX-L		7. CN9101	1, 3, 4	C7376	2
1. C7376		5,6	AYU2L			C7374
2. C7374	1, 3, 4	2		C7380
3. C7380
4. R7396
5. C7334					X7301
6. C7315				R7396
			5, 6		7. CN9101
7. CN9101
				C7334	Pin12	C9131
					Pin11
						Pin21
				C7315

18

	Troubleshooting
			CONDITION		SYMPTOM
			19.5V_SS not available.		Board will not turn ON. No blinking.
			STBY_+3.3V, STBY_+1.8V and STBY_+1.0V not		Board will not turn ON. No blinking.
		3-1-4. NO POWER: DC/DC converter check	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,		3X blinking.
			DDR3_+1.5V or +1.8V_MAIN not available.
			D+1.1V not available.		Board turn ON. No blinking at first, but after
					few minutes (±5min) 8X blinking occur.
		START

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

NO

	YES					YES
				Remove					Other part in
									+5.0V_VBUS line or
				IC9106.
									19.5V_SS line
				Still short?
									broken.
					NO
				IC9106 broken
	YES					YES
				Remove					Other part in
									+5.0V_MAIN line or
				IC9101.
									19.5V_SS line
				Still short?
									broken.
					NO
				IC9101 broken
	YES					YES
				Remove					Other part in D+1.0V
									line or +5.0V_MAIN
				Q9108. Still
									line broken. (AYU2L
				short?
									maybe broken)
					NO
				Q9108 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

SHEET 2

YES

Remove

YES

Other part in D+1.0V

line or +5.0V_MAIN

IC9103.

line broken. (AYU2L

Still short?

maybe broken)

NO

IC9103 broken

YES

YES

Remove

Other part in

IC9104.

+3.3V_MAIN_1 line

Still

or +5.0V_MAIN line

short?

broken.

NO

IC9104 broken

YES

YES

Remove

Other part in D+1.1V

IC9105.

line or +5.0V_MAIN

Still short?

line broken.

NO

IC9105 broken

19

Troubleshooting
3-1-4. NO POWER: DC/DC converter check
SHEET 2
					Check fuse	OPEN
					F9101, F9102,	High current surge
					F9104, F9105,
IC9104	YES		YES	Other part in	F9106.
output or
		Remove		+1.5V_DDR line or
input short
		IC9104. Still		+5.0V_MAIN line	OK
to GND?
SL9109,		short?		broken. (DDR maybe
				broken)
C9171
		NO
					SHEET 3
NO
		IC9104 broken
Q9107	YES		YES
output or		Remove		Other part in
input short				+3.3V_MAIN line or
		Q9107. Still
to GND?				+3.3V_MAIN_1 line
		short?
SL9106,				broken.
C9148		NO
NO		Q9107 broken

20

Troubleshooting

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

Sheet 3
			Turn ON board
19.5V_SS,
				NO
19.5V_HOLD							Check LD Board or
OK?							Harness
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

NO		Check LD Board or
		Harness

NO		Check IC7304 (1.8V)
		or IC7305 (1.0V)

NO

IC9106 broken

MAIN_ YES PWR

high

NO	NO
		IC9101 broken

Refer AYU2L manual service sheet

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

NO		SYSTE YES
		M1_P
		WR
		high

NO

NO

Refer AYU2L manual service sheet

NO	SYSTE	YES
	M2_P
	WR
	high

NO

Refer AYU2L NO manual service

sheet

SYSTE YES M3_P

WR high

NO

NO

Refer AYU2L manual service sheet

IC9103 broken

IC9104 broken

IC9105 broken

IC9201 broken

IC9104 broken

Q9107 broken

21

1

2

4

3

22

1

SL9110

	F9101	19.5V_S
L9107		S
		F9102
		19.5V_HOL
	C9114	D
		C9302
MAIN_PW
R	IC9101
C9158 F9105
		SL9104
Q9108
		IC9106
C9147

IC9103

SYSTEM1_PWR

C9214

23

2

C9202

C9148

IC9201

Q9107

IC7305

C7369

SL9106

C7374		IC7304

24

3

SL9107

IC9104

SYSTEM

3_PWR

SL9109

C9155

F9104

C9171

25

4

SL910

8

IC9105

C9163

F9106

26

Troubleshooting

3-1-5. NO POWER – AYU2L failure

AYU2L Fail Suspected

eMMC / RawNAND erase

Product SW rewrite
	Yes	Product SW
Recover?
		writing issue
No
AYU2L LOG is	Yes	Check DDR
displayed		using CheckSW

No

	(1) Check DDR &	Yes
		Replace
	eMMc / RawNAND
		AYU2L or Board
	interface OK?

No

Replace Board

Find Some	No	Check
		eMMC / RawNAND
Error message
		using CheckSW
Yes		No
DDR device fail		eMMC/ RawNAND
		data fail
From the error		Data fails are
message, we can		especially in
find which device		environment area.
has failure.		If this Area has
Move to device		broken, check soft
analysis phase.		cannot run

Yes

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 exception or errors.

Erase eMMC/ RawNAND is a last option. If still NG after erase, please replace eMMC/RawNAND

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

Product SW write

No

Recover?

Yes

AYU2L issue

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

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

B* Board

NG

NG

NG

	Check	NG	Replace	NG
	Harness/connection				AC Adapter
			LD* Board
	LD*Board to B*Board
	OK		OK
	Harness		LD* Board

Remove IC9101.

Still short? OK

IC9101 broken

	NG	Other part in
		+5.0V_MAIN line or
		19.5V_SS line broken.

NG	Refer AYU2L
MAIN_PWR high?	Troubleshooting
OK
IC9101 broken

Note: Board Details refer Section 3 main page.

29

Troubleshooting

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

Troubleshooting References

1

30