Sanyo P50842-00 User manual

PAGE: 1 of 2
DATE: 12/21/12
SUBJECT: AFFECTED MODELS: Y12
NEW SOFTWARE VERSION VER.54
US2L - Z6WE DP50842
US2L - Z6WF FVM5082.
US2L - Z6WEM DP50842M.
BACKGROUND.
Digital PCB Change from revision 0 ,to Rev B,due to some components relocation,near corner
to avoid contact with grounding plate,Also white mark was added to reduce using of
Plastic Washer ( See page 2 )
Also new Software version came up,to increase performance on product.
This software version is applicable only for 1LG4B10Y105B0 Main PCB.
White squares marks on corners
NEW VERSION MAIN PCB.
Only for this PCB S/W ( Ver 54 )
1LG4B10Y105B0
For USB Software download,please save the following extension file to your USB device.
P320app_748.230XX_PRODUCTION_complete.zimage
STEPS FOR SOFTWARE, MANUAL DOWNLOAD
A. Inspect main PCB version.
B. Be sure of proper connections on all pcb's
C. Connect ac cable to the TV unit and send line switch.
D.Insert USB flash memory,in to USB TV Port.
E. Press Vol - on the TV button unit,and MENU in the RC,at same time.
F. Press enter,wait until " DOWNLOAD IS SUCCESSFUL " blue message appears,press power and
disconnect ac cord, wait aprox 15 seconds and connect ac cord again to verify,that new
version was correctly loaded.
G. Make sure,new application software,boot versions and opt are correctly after ac off/on cycle was done.
NOTE: For the internal TV CPU sw update,the TV must be ac off/on ofter update process
have finished.
The update will be reflected on boot ver.
APPL:748.230.54.0.0.1-
OPT: XX XX
BOOT VER: 748.230.105
EDID: 01.52
P CODE:0A46
REVISION DATE APPROVAL
Rev.0 1/9/2013 Misael Robles
Form QWI-x.x.x-PE-xxxx Rev. 0
SN-12007
DESCRIPTION
NEW SOFTWARE VERSION
ORIGINATOR
SANYO Manufacturing, S.A.de C.V.
FOR , PCB New revision;
1LG4B10Y105B0. NEW
SOFTWARE VERSION. 54
SERVICE NOTICE

PAGE: 2 of 2
DATE: 12/21/12
SUBJECT: AFFECTED MODELS: Y12
NEW SOFTWARE VERSION VER.54
US2L - Z6WE DP50842
US2L - Z6WF FVM5082.
US2L - Z6WEM DP50842M.
FOR MAIN PCB VERSION 1LG4B10Y10500,PLEASE USE S/W VERSION 44.
TO IDENTIFY PCB,VERSION,IS NECESSARY TO OPEN THE TV AND MAKE A VISUAL
CHECK OF DIGITAL MAIN PCB VERSION NUMBER .
DON'T FORGET TO PLACE BACK RUBBER WASHER, DURING REASSEMBLY
Prior version, Main PCB. Plastic washer on this corner must be used
1LG4B10Y10500
For this PCB S/W ( Ver. 44 )
REVISION DATE APPROVAL
Rev.0 1/9/2013 Misael Robles
Form QWI-x.x.x-PE-xxxx Rev. 0
NEW SOFTWARE VERSION
SERVICE NOTICE
SN-12007
SANYO Manufacturing, S.A.de C.V.
FOR , PCB New revision;
1LG4B10Y105B0. NEW
SOFTWARE VERSION. 54
DESCRIPTION
ORIGINATOR
Note:
This notice is only to inform about the two different Main Bds..
The Main that you have or will receive should have the correct SW
installed.
Step# E (first page) explains how to check the SW #. 02/01/13

This guide is divided into 4 sections/pages depending on type of defect:
page 1)No Green LED Power Light.(LED never turns“ON”)
page 2)Green LED Light is “ON”, but Backlight is not “ON”,or only turn“ON & then OFF”.
page 3)Green LED Light is “ON”, and Backlight is “ON”, but there is no video/OSD.
page 4)Green LED Light turns “ON”, but then turns “OFF”within 10 seconds.
Please select the section/page that matches your defect and follow the flow chart.
These models & chassis versions are in this guide:
P50842-00
PLEASE KEEP THIS GUIDE.
IT WILL NOT BE PROVIDED FOR EVERY REPAIR.
[email protected]
P50842M-00
P50842-01
P50842M-01
SANYO
TROUBLESHOOTING GUIDE
2012 MODELS
P50842-00 / P50842M-00 / P50842-01 / P50842M-01
2012/02/23
2012-4A

Repair Flow Chart:Trouble Condition
Green Power LED does not turn on. The TV is dead.
Green Power LED:
Does not turn ON.
The TV is dead.
For analog signal board:
Is the “5VSTB” working normally?
(see TABLE*1.0)
For digital signal board:
Is the “5V_STBY” voltage on
“K5A Pin8”?
Analog board can not work.
Replace “analog board”.
Unplug(CN2) connector on
Power board. On Power board:
Is the “5VSTB” working normally?
(see TABLE*2.0)
Power board can not work.
Replace “Power board”.
Unplug(K1005) and(K5A) connector
between digital unit and analog unit
Is the “5V_STBY” working normally?
(see TABLE*3.0)
Analog board can not work.
Replace “analog board”.
Replace “digital board”.
While pushing the “power”key
is the 2.9V from “key circuit”
supplied to “K5A Pin18”?
Analog board was broken.
Replace “analog board”.
Digital board can not work.
Replace “digital board”.
No:0v
No:0v
Yes:5v
Yes:5v
No:0v
Yes:5v
Yes:5v
No:0v
Yes
No voltage(0v)at K5A Pin18 or 2.9v always present.
Page 1
(TABLE *1.0)Analog board:5VSTB Test Points
50" Models 5VSTB on analog board Conrmation Voltage
P50842-00 Z6WE
P50842M-00 Z6WEM
P50842-01 Z6WF
P50842M-01 Z6WFM
Analog K8B Pin3 5V
(TABLE *2.0) Power board:5VSTB Test Points
50" Models 5VSTB on power board Conrmation Voltage
P50842-00 Z6WE
P50842M-00 Z6WEM
P50842-01 Z6WF
P50842M-01 Z6WFM
Power CN2 Pin3 5V
(TABLE *3.0)Digital board:5V_STBY
50" Models 5V_STBY on analog board Conrmation Voltage
P50842-00 Z6WE
P50842M-00 Z6WEM
P50842-01 Z6WF
P50842M-01 Z6WFM
Analog board K1005 Pin8 5V

Repair Flow Chart:Trouble Condition
Green Power is on, but LCD backlight is not on.
Backlight does not turn on, or only turns on and then off.
Power LED turns ON,
but LCD backlight is not ON
or only turns ON and then
OFF.
For analog signal board:
Is the “BL_SW” voltage (3.3V)
Supplied from “K8B Pin13”?
For Power board:
Is the 0V supplied from “CN3 Pin10”
during LED on?
Panel is broken.
Replace “Panel”.
On digital board:
Is 3.3V supplied to”K5A Pin24” ?
Digit board can not work.
Replace “digital board”.
For Power board:
Is the +20 sine wave in “CN3 Pin 1/2/3”
and -20 sine wave in “CN3
“ Pin 4/5/6”?
Power board can not work.
Replace “Power board”.
Confirm wire harness connection
between analog board &Power board
or between Power board and panel .
Panel can not work.
Replace panel.
Replace “analog board and
wire harness”.
No:0V
No:0V
Yes:3.3V
Yes:3.3V
Yes:0V
No:over 0.1V
No:0V
Yes:+/-20 sine wave(RMS)
Page 2