Sony KD-49XD7005 Schematic

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL (COMMON)

GN2TR CHASSIS

Segment: QEL

Version	Date	Subject
1	06/2016	1st Issue.
2	08/2016	Add Appendix 1 : Reset vs. Factory Reset ( pg 168 )

LCD TV

9-888-701-02

For SM - Unique , please refer :

9-888-701-Px ( Asia)

9-888-701-Ax ( America)

9-888-701-Ex ( Europe )

9-888-701-C1 ( China )

9-888-701-Jx ( Japan )

SERVICE MANUAL (COMMON)

GN2TR CHASSIS

Segment: QEL

LCD TV

MODEL LIST

THIS SERVICE MANUAL CONTAINS COMMON INFORMATION FOR BELOW REGIONS AND MODELS:

REGION
ASIA	AMERICA	EUROPE	CHINA	JAPAN

MODEL

KD-49X7*D KD-55X7*D

KD-49XD7* KD-55XD7*

KJ-49X7*D XBR-55X7*D

XBR-49X7*D

TABLE OF CONTENTS

Section Title	Page
1. SAFETY NOTES
Warnings and Caution……………………………………………………….	5
Caution Handling of LCD Panel ......……………....................................	5
Caution About the Lithium Battery…………….........................................	6
Safety Check Out ........................…………….........................................	6
Leakage Test ..........................................................................................	6
How to Find a Good Earth Ground…………………………………………	6
Lead Free Information….……………………………………………………	7
Handling the Flexible Flat Cable (FFC)…………………………………….	7
Assemble and Dissemble Tuner Module …………………………..…….	9
2. SELF DIAGNOSTIC FUNCTION
Self Diagnosic ……………......................................................................	10
3. TROUBLE SHOOTING
Troubleshooting Items ……………………………………………………..	14
No Power…….………………………………………………………………..	15
LED Blinking.............................................................................................	40
No Sound.............................…………………………………………..........	76
No Picture.................................................................................................	94
Side Buttons Malfunction …………………………………………………….	138
Network Malfunction ……………………………………………………………	144

Section Title	Page
4. SERVICE ADJUSTMENTS
How to Enter Service Mode.............................................................	153
Software Version ……………....................……….………………………	154
Serial Number Edit ………………..………………………………..……..	155
Model Number Setting ………….…..……………………………………...	157
WB Adjustment ………………………………….…………………………..	158
WB/Mura/CUC data transfer ……........................................................	159
HDD Performance Check.......................................................................	160
HDD Re-Register …………………………………………………………..	161
Summary of Service Control ………………………………………………	162
How to Enter Self Diagnosis Display ……………………………………..	163
5. DIAGRAMS
Circuit Board Location .........................................................................	164
Block Diagram......................................................................................	165
Connector Diagram ………………………………………......................	166

Please refer Service Manual – Unique for below information : -Safety Warnings

-Wire Dressing -Circuit Board Location

-Disassembly and Exploded View.

Note: Pictures provided in this Service Manual might have slight difference from the actual sets.

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

1-3. Caution About the Lithium Battery

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

2) Outer case broken battery should 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

(To protect electric shock when customer touch the terminal.)

Leakage current can be measured by V: Voltmeter or oscilloscope (r.m.s. or peak reading)

Stabilized power supply instrument and isolated voltage transformer: Use too much current capacity and isolated voltage transformer does not need to use stabilized power supply equipment.

Specification of RMS volt meter: Input resistance > 1 Mohm, Input capacitance < 200 pF, Frequency range: 15 Hz – 1MHz . Refer Figure 1. Isolated type volt -meter (FLUKE 8921A etc *1)

*1 Not use FLUKE 8920A that connected to protective earth by diode

#Leakage currentof measurementinstrumentis less than 10μArms when under test equipment AC plug is opened

#Set up the following condition and turn on the set. Applied voltage: Nominal input voltage (Description on Nameplate)

#Measure the leakage current between one phase conductor and neutral for terminal 1 and terminal

2. Read rms value, and then calculate to peak value PEAK VALUE =√2

RMS VALUE

Comply with the following requirement

Class II equipment (2-pin plug): for each terminal, the worst value of measurement must not exceed AC 283uA peak).

Note: including AC adaptor, AC adaptor/DC operated unit combination Note: Products which are always used in touch with human body: 141uA (peak)

Note: As for products destined for Southeast Asia (Rod Antenna is accessory. Or it is packed with a product.), the worst value must not exceed AC 141uA (peak).

Figure 1 – Measuring network for Leakage Current

6

1-6. How to Find a Good Earth Ground

1)A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet boxes is also at earth ground.

2)If the retaining screw is to be used as your earth ground, verify that it is at ground by measuring the resistance between it and a cold-water pipe with an ohmmeter. The reading should be zero ohms.

3)If a cold-water pipe is not accessible, connect a 60to 100-watt troublelight (not a neon lamp) between the hot side of the receptacle and the retaining screw. Try both slots, if necessary, to locate the hot side on the line; the lamp should light at normal brilliance if the screw is at ground potential (see Figure 3).

Figure 3. Checking for earth ground.

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.

7

<INSERTION>

Insert properly without slanting

<PULL OUT>

Press release button at the same time pull out FFC cable

8

1-9. Assemble and Dissemble Tuner Module

Tuner Module treatment way

1.The insertion & extraction angle of the module is permitted to specified degree for connector

Push down to screw.

For removing Tuner Module,

After un screwed, Automatically the Module will float to correct degree.

So please extract it with keeping this degree.

20°

Reference paper for 20 degree

(If need please use for fit by cutting this paper)

20°

9

SECTION 2

SELF DIAGNOSTIC FUNCTION

The units in this manual contain a self-diagnostic function. If an error occurs, the Smart Core Red LED will automatically begin to flash. The number of times the LED flashes translates to a probable source of the problem.

A definition of the Smart Core Red LED flash indicators is listed in the instruction manual for the user’s knowledge and reference.

If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.

DIAGNOSTIC TEST INDICATORS

When an error occurs, the Smart Core Red LED will flash a set number of times to indicate the possible cause of the problem.

If there is more than one error, the LED will identify the first of the problem areas.

Result for all of the following diagnostic items are displayed on screen.

If the screen displays a “0”, no error has occurred .

	Smart Core RED	QM-L/QH-L/QH2/QE-L/QE
	LED blinking count
	2x	<B/G/A> Main 12V over voltage [MAIN_POWER]
	3x	<B> Main 5.0V failure [DC_ALERT]
		<B/S> Audio amp. protection [AUD_ERR]
	4x	None
				blue italic: detect at startup sequence only.
		<P/T/G/B> Panel ID EEPROM I2C No ACK (Also panel power
	5x			<G>: Power supply board,
		failure is a suspect) [P_ID_ERR]		<B>: Main board,
				<T>: T-con board
	6x	<G/P/B/LD> Backlight failure [BACKLIGHT]		<LD> LD board (if AC adapter model, it would
				power supply for Set)
	7x	Over temperature protection [TEMP_ERR]		<P>: Panel module
		<B> Temp. sensor I2C No ACK [TEMP_ERR]		<S>: Speaker
				<A>: Power Adapter,
	8x	None		<D>: 4KBE + audio board (w/ 4KBE only),
				<Tu>: Tuner board (w/o 4KBE only)

10

	Record Only	QM-L/QH-L/QH2/QE-L/QE
	Item
		<B/Tu> Tuner & Demodulator I2C
	TU_DEMOD	communication failure
		Tuner board set detect			Blue italic: detect at startup sequence only.
					<G>: Power supply board,
	TCON_ERR	None			<B>: Main board,
					<T>: T-con board,
					<TE>: Temp Censor board,
					<LD> LD board (if AC adapter model, it would power
		<T> FRC device is not finished Initial sequence
	FRCTC_I2C				supply for Set)
		FRC device I2C communication failure			<P>: Panel module
					<S>: Speaker
					<A>: Power Adapter,
	AUD_ERR_I2C	None			<D>: 4KBE + audio board (w/ 4KBE only),
					<Tu>: Tuner board (w/o 4KBE only)

11

	Entry (Self Diagnosis Display)
	- Go to the standby by a remote.
	- Push the buttons sequentially:
																												Error count
	<Display><5><Vol-><Power>									Error Item						SELF CHECK
	Exit
	-If you want to finish service mode app, do AC OFF/ON
																															<<
	→*Service mode app is disable perfectly								002			MAIN POWER								000000000000				000000000000						000000000000				000
	-if you want to move home menu, push <HOME>button								003			DC ALERT								000000000000				000000000000						000000000000
									003			AUD ERR								150101000018				150101000018						150101000018				003
	→*Service mode app do background(not disable
									003			TU DEMOD								150101000218				150101000223						150101000105				003
	perfectly)								004			LD ERR								000000000000				000000000000						000000000000				000
									005			TCON ERR								150101000504				000000000000						000000000000				001
									005			P ID ERR								000000000000				000000000000						000000000000				000
			Smart Core Red						005			FRCTC I2C								000000000000				000000000000						000000000000				000
			LED blinking						006			BACKLIGHT ERR								000000000000				000000000000						000000000000				000
Format of error timestamps			count						007			TEMP ERR								150101000200				150101000002						000000000000				002
	YYMMDDhhmmss (in UTC)
									00005			00414 00002
	Example:																							[Home]Exit
	120823132523 -> Aug 23 2012 13:25:23 UTC
																				Error				Error					Error
* Only when time is set, an error timestamp
																				timestam				timestam					timesta
	is saved.																			p for last				p for					mp for
																				recorded				second					3rd last
																				error				last					recorde
																								recorded					d error
	Panel Operation Time clear																							error
<7> -> <0>
				Total Operation Time [hr] – Boot Count – Panel Operation Time [hr]
	Timestamps and Error Count clear
<8> -> <0>										•Panel Operation Time is recorded every 30 min, but Total
	Total Operation Time and Boot Count clear									Operation Time is recorded every 1 hr.
										Therefore, the panel op. time might become larger than the
<9> -> <0>										total op. time.

12

Triage Chart

Before you make the service call…

1.Confirm the symptom from the customer.

2.Select that symptom from the chart.

3.Bring all the boards and cables listed for that symptom.

4.Follow the troubleshooting charts in the technical guides to isolate the board.

Chart Color Code

RED DOT: Most likely defective part

BLUE TRIANGLE: Secondary possible defective part BLACK TEXT: Board that may correct the symptom

Symproms - no

Symptoms - Shutdown. Power LED

shutdown

No

Video

Remote

Network

Audio

Skype

Smart Core

Bluetooth

blinking red diagnostics sequences

Error log record

Power

- missing or distorted

(BT)

only

Reference

No White

Statio

No

Bluetooth /

TU_

TCO

FRC

AUD_E

Power LED

nary

video

No

Wireless

Skype

Smart Core

One Step

2

3

4

5

6

7

8

DEM

N_E

TC_

RR_I2

& does not

colore

One

NO RF

video

No

can't

No Audio

Can't

no LED (Set

Remote

OD

RR

I2C

C

reponse to

d lines

of

input

all

Remote

connect

Work

is still alive)

(OSR)

remote

or dots

Input

Inputs

can't

(Dead Set)

s

connect

B* Board













































DPA Board





























(QX only)

G*















Board/ADP

H* Board







Speaker





Tuner board





(Except QX)

Wifi & BT







Module

LD* Board

















V By One











FFC

Tcon









LCD Panel











Panel

Panel

Problem

(Commu

(Backli

Power

Power

LD

nication)

ght)

TEMP

4KBE

Audio

13

SECTION 3

TROUBLESHOOTING

No	Item
1.0	No Power - PSU
1.2	No Power -u-Com Failure
1.3	No Power - DDCON/LDO
1.4	No Power - Main Device Failure
1.5	No Power - Main Device Replacement
2.0	LED Blinking: 2x (Main power Error)
2.1	LED Blinking: 3x (DC Alert)
2.2	LED Blinking: 3x (Audio Error)
2.3	LED Blinking: 4x (LD Voltage Error)
2.4	LED Blinking: 5x (Panel Communication Error)
2.5	LED Blinking: 6x (Backlight Error)
2.6	LED Blinking: 7x (Temperature Error)
3.0	No Sound
3.1	No Sound: Audio (For all models)
3.3	Main Board Power Off Checking (for Main SP Lch &
	Rch)
3.4	Main Board Power On Checking (for Main SP Lch &
	Rch)
3.5	No Sound: HP / Lineout Only
3.6	No Sound: SCART OUT Audio
3.7	No Sound: Tuner
3.8	No Sound: HDMI

No	Item
4.0	No Picture: All models
4.1	No Picture: VIDEO Component/CVBS/SCART Analog
	Signal Path
4.2	No Picture: VIDEO
4.3	No Picture: Component/SCART
4.4	No Picture: Tuner
4.5	No Picture: HDMI
5.0	Side Buttons Malfunction
5.1	IR Remote Commander Malfunction
5.2	Light Sensor Error
6.0	Network Malfunction: Ethernet (Wired)
6.2	Troubleshoot flow for Wireless Network malfunction
6.3	Troubleshoot flow for Bluetooth malfunction (3D, TPR)

14

1.0 No Power – PSU

15

1 No Power

BFM Board Model

with G* board					with AC-ADP
	No Power				No Power
Check STBY 3.3V			Replace	NG	Check 19.5V			Replace	NG
	C413	NG				C401	NG			LD Board or
			Between G* Board to	G* Board				Between LD Board to
	near CN400				near CN400					AC Adaptor
			BFM Board Harness					BFM Board Harness
	on BFM board				on BFM board
			OK					OK
	OK				OK
			Harness					Harness

BFM Board	BFM Board
u-Com Failure	u-Com Failure
DDCON/LDO	DDCON/LDO
Main Device Failure	Main Device Failure

16

1 No Power

BM2/DPA Board Model

with G* board

No Power

Check STBY 3.3V

C497 near CN401 on DPA board

OK

Check STBY 3.3V

C402 near CN400 on BM2 board

OK

BM2 Board

NG

NG

Replace Between G* Board to DPA Board Harness

OK

Harness

Replace Between DPA Board to

BM2 Board Harness OK

Harness

u-Com Failure

DDCON/LDO

Main Device Failure

NG

G* Board

NG	R407, R408
	on DPA Board

with AC-ADP

No Power

Check 24V

C485 near CN401 on DPA board

OK

Check STBY 3.3V

C402 near CN400 on BM2 board

OK

BM2 Board

NG

NG

Replace Between LD Board to DPA Board Harness

OK

Harness

Replace Between DPA Board to

BM2 Board Harness OK

Harness

u-Com Failure

DDCON/LDO

Main Device Failure

NG	LD Board
	or
	AC Adaptor

NG	IC408
	on DPA Board

17

1.2 No Power – μ-Com Failure

18

1.2 No Power u-com Failure

BFM Board Model

+3.3V_STBY

BL_ON

G-Board or LD

G-Board or LD	POWER_ON
or IC409

+12V_REG

R430

R437

GND

P-on u-com control signal path summary

B-Board

#pin1

Vdd Ucom supply voltage

#pin18

#pin19IC401

#pin7

MAIN_VC C

ADC port

com u on-P -

#pin2

#pin12

#pin5

#pin10

#pin16

#pin1

1

#pin9

#pin1

3

#pin14

#pin3

#pin15

#pin8

OPWRSB

ORESETB

AC_OFF_INFO

PANEL_PWR_ON

X_SYSTEM_RST

P_ON_VBUS

PGOOD_ 1

P_ON_#1

P_ON_#2

DC_OFF_DET

P_ON_LNB

BL_MUTE

SOC Muffin 2 (IC1000)

Tuner (CN2800)

DDC: +5.0V_VBUS (IC402)

DDC : +1.0V_M2 (IC604)

DDCs : +1.8V_TU (IC405)

DDCs : +5V_MAIN (IC404), +3.3V_MAIN (Q406/Q407)

LDOs: +1.05V_M2_A_1 (IC603),

+1.05V_M2_A_2 (IC606), VCC3IO_EMMC (IC2002)

DC_OFF_DET (IC400)

+12V_LNB (Q408/Q409)

SOC Muffin 2 (IC1000)

19

1.2 No Power u-com Failure			BFM Board Model
	START

Check VDD			no
C419 Voltage.
Is the voltage >3.0V?
	yes
Check DC_OFF_DET			no
C504 Voltage.
Is the voltage >3.0V?
	yes
Check OPWRSB			no
R441 Voltage.
Is the voltage 0V?
	yes
Check POWER_ON			no
P-on ucom #pin19
Is the voltage >3.0V?
	yes
Check P_ON_LNB			no
P-on ucom #pin15
Is the voltage >3.0V?
	yes

Check +3.3V_STBY

C413, CN400 #24pin

Check DC_OFF_DET

IC400

SOC

Muffin 2 problem

Try AC Off and On after few minutes. If #pin19 keep Low, change IC401.

If #pin19 goes High few seconds and downs to Low, Check +12V_MAIN Line (G board, LD or IC409).

Change IC401

Check MAIN_VCC

no

R437 Voltage. Is the voltage >1.6V?

yes

Check P_ON_VBUS

no

P-on ucom #pin11 is >3.0V?

yes

Check P_ON_#1

no

P-on ucom #pin13 is >3.0V?

yes

Check PGOOD_1

no

R434 Voltage. Is the voltage >3.0V?

Continue next page…

Check +12V_MAIN Line (G board, LD or IC409).

Change IC401

Change IC401

1.3 No POWER - DDCON/LDO

Check 1.0V DDCON (IC604)

And (if it is mounted)

12V DDCON (IC409).

20	20

1.2 No Power u-com Failure

BFM Board Model

Cont…

yes

Check P_ON_#2 P-on ucom #pin14 Is the voltage >3.0V?

yes

Check ORESETB P-on ucom #pin12 Is the voltage >3.0V?

yes

Check X_SYSTEM_RST P-on ucom #pin16 Is the voltage >3.0V?

yes

If BL_MUTE (R435) is 0V Check BL_ON

P-on ucom #pin18

Is the voltage >3.0V? yes

no

no

no

no

Change IC401

Change IC401

Change IC401

Change IC401

END

Ucom IC401 is working OK

21

21

1.2 No Power u-com Failure

BFM Board Model

DC_OFF_DET check

START

Check DC_OFF_DET		no
R420					END
				IC400 is working OK
Is voltage < 3V?
	yes
Check Vdd		no
					Change IC400
C418
Is voltage < 5V?

yes

END

IC400 is working OK

22

22

1.2 No Power u-com Failure

BM2/DPA Board Model	P-on u-com control signal path summary

+3.3V_STBY

BL_ON

G-Board or LD

G-Board or LD	POWER_ON
or IC403 on DPA

+12V_REG

R430

R437

GND

#pin1

Vdd Ucom supply voltage

#pin18

#pin19IC401

#pin7

MAIN_VC C

ADC port

com u on-P -

#pin2

#pin12

#pin5

#pin10

#pin16

#pin1

1

#pin9

#pin1

3

#pin14

#pin3

#pin15

#pin17

#pin8

OPWRSB

ORESETB

AC_OFF_INFO

PANEL_PWR_ON

X_SYSTEM_RST

P_ON_VBUS

PGOOD_ 1

P_ON_#1

P_ON_#2

DC_OFF_DET

P_ON_LNB

X_BE_RST

X_LED_MUT

E

BM2 or DPA Board

SOC Muffin 2 (IC1000)

Tuner (TU2801 , TU2802, TU2803)

DDC: +5.0V_VBUS (IC402)

DDC : +1.0V_M2 (IC604)

DDCs : +1.8V_TU (IC405), +1.1V_TU_SKP (IC406)

DDCs : +5V_MAIN (IC404), +3.3V_MAIN

+1.0V_BE (IC4003/DPA) (IC409/DPA),

+1.5V_BE (IC4001/DPA) , +1.1V_BE (IC4002/DPA)

LDOs: +1.05V_M2_A_1 (IC603),

DC_OFF_DET (IC400)

+12V_LNB (Q408/409)

SOC BE (IC4000/DPA)

23

1.2 No Power u-com Failure	BM2/DPA Board Model
START

Check VDD			no
C419 Voltage.
Is the voltage >3.0V?
	yes
Check DC_OFF_DET			no
C481 Voltage.
Is the voltage >3.0V?
	yes
Check OPWRSB			no
R441 Voltage.
Is the voltage 0V?
	yes
Check POWER_ON			no
P-on ucom #pin19
Is the voltage >3.0V?
	yes
Check P_ON_LNB			no
P-on ucom #pin15
Is the voltage >3.0V?
	yes

Check +3.3V_STBY

C402, CN400 #1pin

Check DC_OFF_DET

IC400

SOC

Muffin 2 problem

Try AC Off and On after few minutes. If #pin19 keep Low, change IC401.

If #pin19 goes High few seconds and downs to Low, Check +12V_MAIN Line (G board or IC403 on DPA).

Change IC401

Check MAIN_VCC

no

R437 Voltage. Is the voltage >1.6V?

yes

Check P_ON_VBUS

no

P-on ucom #pin11 is >3.0V?

yes

Check P_ON_#1

no

P-on ucom #pin13 is >3.0V?

yes

Check PGOOD_1

no

R434 Voltage. Is the voltage >3.0V?

Continue next page…

Check +12V_MAIN Line

(G board or IC403 on DPA).

Change IC401

Change IC401

1.3 No POWER - DDCON/LDO Check 1.0V DDCON (IC604) and (only for AC-ADP model) 12V DDCON (IC403 on DPA).

24

24

1.2 No Power u-com Failure

Cont… yes

Check P_ON_#2

no

P-on ucom #pin14 Is the voltage >3.0V?

yes

Check ORESETB

no

P-on ucom #pin12 Is the voltage >3.0V?

yes

Check X_SYSTEM_RST

no

P-on ucom #pin16 Is the voltage >3.0V?

	yes
If PANEL_PWER_ON (R433) is 0V
Check X_BE_RST			no
P-on ucom #pin17
Is the voltage >3.0V?
	yes
If BL_MUTE (R435) is 0V
Check BL_ON			no
P-on ucom #pin18
Is the voltage >3.0V?
	yes

Change IC401

Change IC401

Change IC401

Change IC401

Change IC401

BM2/DPA Board Model

END

Ucom IC401 is working OK

25

25

1.2 No Power u-com Failure

BM2/DPA Board Model

DC_OFF_DET check

START

Check DC_OFF_DET		no
R420					END
				IC400 is working OK
Is voltage < 3V?
	yes
Check Vdd		no
					Change IC400
C418
Is voltage < 5V?

yes

END

IC400 is working OK

26

26

1.3 No Power DDCON/LDO

27

27

1.3 No Power DDCON/LDO

BFM Board Model

Check item summary

	IC Ref	Voltage supply	Output ref.	Enable pin	Enable source	Fuse	Vcc ref.
	IC402	+5.0V_VBUS	C430	R455	P-on ucom IC401 #pin11	F400	C423
	IC403	+3.3V_DDC_OUT	C444	R467	R464 (19.5 or 12.5V)	F401	C436
	IC404	+5V_MAIN	C456	IC404 #PIN1	P-on ucom IC401 #pin14	F402	C453
	IC405	+1.8V_TU	C463	IC405 #PIN5	P-on ucom IC401 #pin13	F403	C461
	IC409	+12V_MAIN (AEP/J AC-ADP	C483	R513	P-on ucom IC401 #pin19	F404	C476
		only)
	IC601	+1.5V_DDR	C609	C605	R603 (3.3V or 5V)	-	C602
	IC602	+1.05V_M2_STBY	C611	R612	C610 (+3.3V _STBY)	-	C610
	IC603	+1.05V_M2_A_1	C613	R619	P-on ucom IC401 #pin14	-	C612
	IC604	+1.0V_M2	C625	R623	P-on ucom IC401 #pin13	F600	C618
	IC605	+1.05V_M2_ST_ET	C631	R613	M2 IC1000 #AP34	-	C630
	IC606	+1.05V_M2_A_2	C633	R633	P-on ucom IC401 #pin14	-	C632

28

28

1.3 No Power DDCON/LDO

BFM Board Model

IC Ref	Voltage supply
IC402	+5.0V_VBUS
IC403	+3.3V_DDC_OUT
IC404	+5V_MAIN
IC405	+1.8V_TU
IC409	+12V_MAIN (AEP/J AC-ADP only)
IC604	+1.0V_M2

DDCONs check

START

	Check fuse	no
	F4xx or F6xx
	Is fuse OK?
	yes
	Check Vcc voltage	no
	C4xx or C6xx
	Is voltage >12.0V?
	yes
	Check Enable pin	no
	voltage
	Is voltage >2.5V?
	yes
	Change DDCON IC

Please refer page-28 for Ref number.

Change Fuse

Check POWER_ON P-on ucom #pin19 (Refer 1.2 No Power U-Com Failure)

1.2 No Power U-Com Failure or

Enable source

29

29

1.3 No Power DDCON/LDO

BFM Board Model

DDCON check

START

	Check IC404Vcc voltage	no
	C454
	Is voltage >12V?

yes

	Check Vcc voltage	no
	C602
	Is voltage >4V?

yes

no

Is IC600 mounted?

yes

	Check Enable	no
	IC600 #pin1
	Is voltage >2.5V?

yes

Change DDCON

IC601

	Check Vcc voltage	no
	C602
	Is voltage >3V?

yes

Check		no
D601
Is diode ?
	yes

Change IC600

IC Ref	Voltage supply
IC601	+1.5V_DDR

Check	no
D600	Change D600
Is diode ?
yes	Check +3.3V_STBY.
	G board or IC403
Change D601

Check +5V_MAIN DDCON (IC404)

30

30