DOWNLOAD Sony KDL-65W850A / KDL-65W855A Service Manual ↓ Size: 16.78 MB | Pages: 127 in PDF or view online for FREE

RB1G

W850/855A

Please remove ''PWB wifi'' and ''PWB BT''

5.Remove ''PWB ASSY '' from ''SC ASSY''

1

Please remove ''HIF2''

3

PWB Wifi

PWB BT

Unplug

※ Don't reuse ''PET SHEET'' which have been removed.

Pl

''PET SHEET'' t

bl b

k

Unplug

2

Please use new ''PET SHEET'' to assemble back.

FINISH

Please peel off adhesive tape and remove ''PET SHEET''

9

RB1G

W850/855A

Power Off
( by power saving switch off 

Off

Off

Off

*1  power switch off (by side key) 

+/- (Volume) /   /     .

( by po e sa

g s

c o

and *1)

O

O

O

po e s

c o (by s de ey)

Power On

White

Off

Off

Main-micro is in normal operation

Standby
( by remote control off only )

Off

Off

Off

Main-micro block is in sleep mode

Skype Call Receive

white

white blinking

Off

Picture Off

White looping 

breathing

one time blinking

Off

Turn the TV on or switch to 
standby mode

Press to select the next or 
previous channel.
Press to adjust the volume.
In TV Home Menu:    buttons 
will work as    ,   ,   ,   .     

breathing

Device Connection

White

cyan

Off

Set "On Timer"/ Reminder / Set 
"Rec Timer"
( Power On )

White

Orange

Off

Set "On Timer"/  Reminder / 
Set "Rec Timer"
( Standby )

Off

Off

Orange

USB 2/3
Press to see photo, music and 
video files stored on a USB 
device.

SELECT/ CONFIRM
Press to display a list of inputs. 
To select the connected device 
input, press this button 
repeatedly.
In TV Home Menu, this button 
will work as     (select/confirm)

( Standby )

Failure

Off

Red 

Blinking

Off

The number of LED blinking 

indicates cause of failure

( refer to the table of next page )

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

Software Updating

white blinking

white blinking

off

HOME
Press to display the TV 
Home Menu.

Software Updating finish

Off

Blue lit

off

Test Reset 

White

white blinking

Off

Error of panel ID

Off

Green Blinking

Orange

Blinking

Blinking:0.5sec On / 0.5sec Off

REC [AEP/J only]

White

Red(Pink) Lit

Off

Picture Frame

White

Orange

Off

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

ePOP/
Shop Illumination

White

Cyan Lit/

Cyan loop

Off

One shot Center White when 

feature change

patterns as indicated below

. 

3.0sec

3.0sec

0 5

0.

5sec

10

0.5sec

Example: The figure above shows LED display when SHUTDOWN is caused by Audio 
Error. It repeats flashing for a specified number of times in 0.5sec/cycle and has a 3 seconds interval of lighting 
off. Please note that a 3 seconds interval of lighting off is fixed regardless of abnormal state types.

RB1G

W850/855A

Note: Details refer to Troubleshooting Section.

Smart Core RED 

LED blinking 

t

Detection Items

Board Error Item

count

2x

Main 12V failure [MAIN_POWE]

* This failure is not saved.

G* Board Error
B* Board Error

Main 5.0/3.3/1.8/1.0/ 1.1V failure [DC_ALERT]

* 5 0/1 0V failures are not saved

B* Board Error

3x

 5.0/1.0V failures are not saved.

Audio amp. protection [AUD_PROT]

B* Board Error


Speaker

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

B* Board Error

Tuner or demodulator I2C NACK [TU_DEMOD]

B* Board Error

AFE device I2C NACK [AFE_I2C]

B* Board Error

AFE device error SPI NACK [AFE_SPI] * only 

for AEP,CH

B* Board Error

4x

LED driver failure/LED voltage protection 

[LD_ERR]



Panel module 



LED Driver

TCON device I2C NACK [TCON_ERR]

TCON device Initialization failure [TCON_ERR]



Tcon board

5x

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



Panel module 



Tcon board

G* Board Error
B* Board Error

 G* Board Error

6x

Backlight converter OVP [BACKLITE]

Tcon board


Panel module 

B* Board Error

7x

Over temperature protection [TEMP_ERR]

Temp. sensor I2C NACK [TEMP_ERR] * There is 
HDMI Eq on the  same I2C bus.

B* Board Error

Size

B* Board Type G* Board Type

11

q

8x

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

B* Board Error

65”

BA2SC G6&G7B

RB1G

W850/855A

Stationary

No White Power LED  

& does not reponse to 

remote (Dead Set)

Stationary 

colored 
lines or 

dots      

No video One 

of Inputs

No video all 

Inputs

No Remote

Wireless

can't connect

No Audio

Skype 

Can't Work

Smart Core no  LED (Set is 

still alive)

Bluetooth / One 

Step Remote (OSR) 

can't connect

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※Add for CM/MH

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Panel

Panel

Soft-

Note: Details refer to Troubleshooting Section.

Most likely defective part

Size

B* Board Type G* Board Type

Power Power

LD

(Tcon)

(Backlight)

TEMP

ware

Emitter

Audio

FAN

(N/A)

Local

I2C

12

Secondary possible defective part

Most likely defective part

65”

BA2SC G6&G7B