Sony Grand Wega KF-50SX100 User manual

CHASSIS LE-3SERVICE MANUAL
MODEL COMMANDER DEST. CHASSIS NO.
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MODEL COMMANDER DEST. CHASSIS NO.
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50
∗ Please file according to odel size. .......
LCD PROJECTION TV
KF-50SX100 RM-903 AEP SCC-P59A-A
KF-50SX100K RM-903 OIRT SCC-P60A-A
KF-50SX100U RM-903 UK SCC-P61A-A
KF-50SX100/50SX100K/50SX100U
RM-903
RM 903
PROGR
MENU
1
4
7
2
5
8
0
3
6
9
VI DEO TV
SONY
OK
TV

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KF-50S 100/50S 100K/50S 100U
SPECIFICATIONS

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KF-50S 100/50S 100K/50S 100U
SELF DIAGNOSIS FUNCTION
1-1. LE-3 SELF DIAGNOSTIC SOFTWARE
The identification of errors within the LE-3 chassis is triggered in one of two ways : - 1: Busy or 2: Device failure to respond to C. n
the event of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with
continuous flashing LED) and then communicate with each device in turn to establish if a device is faulty. f a device is found to be
faulty the relevant device number will be displayed through the LED (Series of flashes which must be counted) See table 1., non fatal
errors are reported using this method.
Power cord is not plugged in Power does not co e on
Power does not turn on Does not light Fuse is Burned out No power is supplied to the TV
AC power supply is faulty
SET 5V Dowin 2 ti es Q1606, 1607 Power FET is shorted Power does not co e on
(G Board) Load on power line has shorted
No. of ti es Standby
LED Flashes Detected Sy pto s
ERROR STBY LED ERROR COUNT
No error 00
Not allowed ( ay be confused with Sircs response flash) 01
SET 5V Down 02
La p Cover error 03
Fan error 04
La p Driver error 05
Not used 06
Speaker Protection 07
General IIC Line 0 error 08
MEGATEXT (IC9502) 09
NVM (IC9108) 10
Main colour decoder (IC8301) 11
MCP (IC701) 14
Multi sound processor (IC4702) 15
Auto Wide (IC8700) 16
External RAM (IC9107) 17
La p error La p LED continnously on
Diagnostic Ite
Description Probable cause Location
Flash Timing Example : e.g. error number 3
ON
OFF OFF
ON ONStandby LED

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KF-50S 100/50S 100K/50S 100U
1-2. ERROR DETECTION MONITOR
Device acknowledge is used to check C errors.
Each device is checked three times, if there is no acknowledge after every attempt, it will be regarded as an error.
There are three step to check errors.
1. C line 0
f all devices except the NVM have errors, C line 0 error is displayed.
2. Each device check
if C line error and board error are not detected then the device with an error is displayed.
The detected errors can be displayed as follows:
1. Error Monitor Menu
2. Error Reader
1-2-1. Error Monitor Menu
The error monitor menu is displayed by selecting Service mode : Monittoring. The following menu will be displayed:
Error Monitor
1
Operating Ti e :
Stored Errors :
1. J-B MSP3410
Current Error :
Start Error Sequence
2. B3-B CXA2101 MCP
3. J-B CXA2123 Main Col Dec
4. Error Code Not Valid
5. Error Code Not Valid
Ignore Errors OFF
000021 h 40 in
ON ON
Error Monitor
1 LAMP : 0
5 LAMP DRIVER : 0
4FAM : 0
3 LAMP COVER : 1
WDT-E : 0
Error Monittor
LCD-Engine error menu

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1-2-2. Error Reader Display
The error reader display is connected to the service connector to read actual error codes. The part number for the error reader display is
S-188-900-10.
Once an error has been detected it will then be displayed on the two digit error reader. The errors displayed refer to the following table:
Send Data to Error Reader
Error Code Data High Data Low Error Type Function
00 00h – f0h no device
Gen. IIC Error
00 01h f0h 01h IIC 0 line
00 02h f0h 02h IIC 1 line not used
Device Error
A Board
01 01h f1h 01h CXA1875 Port Expander
01 02h f1h 02h TU1301 Main Tuner
01 03h f1h 03h TU1302 Sub Tuner
BB Board
04 01h f4h 01h CXD9509 MID-X
BB Board
06 01h f6h 01h CXA2101 MCP
J Board
04 04h f4h 04h TDA9178 Picture Booster
07 03h f7h 03h CXA2123 Sub Colour
07 04h f7h 04h CXA2123 Main Colour
07 0Ah f7h 0Ah CXA2149 AV SW
S Board
07 05h f7h 05h CXA1875 Sub Sound
07 08h f7h 08h MSP3410D Sound Proc
M Board
08 01h f8h 01h ST24C32 NVM