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SN-12007
SANYO Manufacturing, S.A.de C.V. SERVICE NOTICE PAGE:
DATE:
1 of 2
12/21/12
SUBJECT: AFFECTED MODELS: Y12
NEW SOFTWARE VERSION VER.54
FOR , PCB New revision; US2L - Z6WE DP50842
US2L - Z6WF FVM5082.
1LG4B10Y105B0. NEW
US2L - Z6WEM DP50842M.
SOFTWARE VERSION. 54
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 DESCRIPTION ORIGINATOR APPROVAL
Rev.0 1/9/2013 NEW SOFTWARE VERSION Misael Robles
Form QWI-x.x.x-PE-xxxx Rev. 0
SN-12007
SANYO Manufacturing, S.A.de C.V. SERVICE NOTICE PAGE:
DATE:
2 of 2
12/21/12
SUBJECT: AFFECTED MODELS: Y12
NEW SOFTWARE VERSION VER.54
FOR , PCB New revision; US2L - Z6WE DP50842
US2L - Z6WF FVM5082.
1LG4B10Y105B0. NEW
US2L - Z6WEM DP50842M.
SOFTWARE VERSION. 54
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 )
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
REVISION DATE DESCRIPTION ORIGINATOR APPROVAL
Rev.0 1/9/2013 NEW SOFTWARE VERSION Misael Robles
Form QWI-x.x.x-PE-xxxx Rev. 0
2012/02/23
2012-4A
SANYO
TROUBLESHOOTINGGUIDE
2012MODELS
P50842-00/P50842M-00/P50842-01/P50842M-01
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
P50842M-00
P50842-01
P50842M-01
PLEASE KEEP THIS GUIDE.
IT WILL NOT BE PROVIDED FOR EVERY REPAIR.
[email protected]
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: No:0v
Is the "5VSTB" working normally?
(see TABLE*1.0)
Unplug(CN2) connector on No:0v
Power board. On Power board: Power board can not work.
Yes:5v
Is the "5VSTB" working normally? Replace "Power board".
(see TABLE*2.0)
Yes:5v
No:0v
Unplug(K1005) and(K5A) connector
Analog board can not work.
between digital unit and analog unit
Replace "analog board".
Is the "5V_STBY" working normally?
(see TABLE*3.0)
Yes:5v
Replace "digital board".
For digital signal board: No:0v
Is the "5V_STBY" voltage on
"K5A Pin8"?
Analog board can not work.
Yes:5v
Replace "analog board".
While pushing the "power"key No voltage(0v)at K5A Pin18 or 2.9v always present.
is the 2.9V from "key circuit"
supplied to "K5A Pin18"?
Analog board was broken.
Replace "analog board".
Yes
Digital board can not work.
Replace "digital board".
(TABLE *1.0)Analog board:5VSTB Test Points
50" Models 5VSTB on analog board Confirmation Voltage
P50842-00 Z6WE Analog K8B Pin3 5V
P50842M-00 Z6WEM
P50842-01 Z6WF
P50842M-01 Z6WFM
(TABLE *2.0) Power board:5VSTB Test Points
50" Models 5VSTB on power board Confirmation Voltage
P50842-00 Z6WE Power CN2 Pin3 5V
P50842M-00 Z6WEM
P50842-01 Z6WF
P50842M-01 Z6WFM
(TABLE *3.0)Digital board:5V_STBY
50" Models 5V_STBY on analog board Confirmation Voltage
P50842-00 Z6WE Analog board K1005 Pin8 5V
P50842M-00 Z6WEM
P50842-01 Z6WF
P50842M-01 Z6WFM
Page 1
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:
No:0V
Is the "BL_SW" voltage (3.3V)
Supplied from "K8B Pin13"?
No:0V Digit board can not work.
On digital board:
Is 3.3V supplied to"K5A Pin24" ? Replace "digital board".
Yes:3.3V
Yes:3.3V
Replace "analog board and
wire harness".
For Power board: No:over 0.1V
Is the 0V supplied from "CN3 Pin10"
during LED on?
Panel is broken.
Replace "Panel".
Yes:0V
For Power board: No:0V
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.
Yes:+/-20 sine wave(RMS) Replace "Power board".
Confirm wire harness connection
between analog board &Power board
or between Power board and panel .
Panel can not work.
Replace panel.
Page 2
Repair Flow Chart:Trouble Condition
Green Power LED and LCD backlights is ON, but no video or OSD.
LCD backlight is ON,
but TV has NO VIDEO or OSD.
For analog board:
Is the 12V supplied from "K8B Pin 6/7"?
Replace"Power board" and
"Wire harness".
For digital board:
Is power 12V supllied from "K5A Pin5"?
Analog board can not work.
Replace "analog board".
For digital board:
Is power 12V to TCON supplied
from"K7200 Pin1/2/3/4" ?
Digital board can not work.
Replace "digital board".
Is FFC singal working?
(see TABLE*1.0)
Digit board can not work.
Replace "digital board".
Confirm FFC cable connection
and then check video or OSD again.
T.Cnt.Board or LCD panel can not work. If FFC singal output is OK, the digital board is
1st:Replace"T.Cnt.Board&FFC Cable". normally OK, but can not be sure. If
If T.Cnt.board&FFC cable has no the T Cont Board & FFC has no problem,
problem, then 2nd:Replace"LCD Panel". please try the digital Board before changing
the panel.
(TABLE*1.0)Main board:"FFC Clock"Test Points
50" Models LVDS Clock on digital board
P50842-00 Z6WE K7200 Pin32 clock+
P50842M-00 Z6WEM K7200 Pin33 clock-
P50842-01 Z6WF
P50842M-01 Z6WFM
Note:The bandwidth of the oscilloscope and probe must be at least 100MHZ or higher to check if the clock pulse exists.
Page 3
Repair Flow Chart:Trouble Condition
Power LED turns OFF within 10 seconds after the TV power turns on.
Power LED turns OFF within
10 seconds after TV power
turns on.
For analog board:
Is 3.3V supplied to"K8B Pin1"during
LED power on ?
For digital board:
Is 3.3V supplied to "K5A Pin44"?
Digital board can not work.
Replace "digital board".
Analog board can not work.
Replace "analog board".
Unplug cable from digital board
to T.Cnt.board whether the
symptom changed?
T Con board can not work.
Digital board may also can not work.
Replace "T Con board&digital board".
For power board:
Is the 5V supplied from "CN2 Pin8/9 "
during LED power on?
Power board can not work.
Replace "Power board."
Digital board can not work.
Analog board may also do not work.
Replace "digital board and analog board".
Page 4
FILE NO.
SERVICE MANUAL Remote Control Digital DP50842 (U.S.A.)
Color Television (CANADA)
ORIGINAL VERSION
Chassis No. P50842-00
NOTE: Match the Chassis No. on
the unit's back cover with
the Chassis No. in the
Service Manual.
If the Original Version
Service Manual Chassis
No. does not match the
unit's, additional Service
Literature is required. You
must refer to "Notices" to the
Original Service Manual
prior to servicing the unit.
Servicing should be performed by only trained and qualified service personnel.
Contents Specifications
SAFETY INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . 2 POWER RATING . . . . . . . . . . . . . . . . . . . . . . . . . 120VAC
SERVICE ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . 3 186 W (AVG.)
ON-SCREEN SERVICE MENU . . . . . . . . . . . . . . . . . . . . . 4 ANTENNA INPUT IMPEDANCE. . . . . . . . . . . . . . . . . 75
POWER FAILURE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . 5 UHF/VHF/CATV
MECHANICAL DISASSEMBLY . . . . . . . . . . . . . . . . . . . . 6 DIGITAL
CHASSIS ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . 9