DOWNLOAD Sony KF-E42A10 / KF-E50A10 (serv.man3) Service Manual ↓ Size: 14.36 MB | Pages: 78 in PDF or view online for FREE

Model
KF-E42A10 KF-E50A10 (serv.man3)
Pages
78
Size
14.36 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kf-e42a10-kf-e50a10-sm3.pdf
Date

Sony KF-E42A10 / KF-E50A10 (serv.man3) Service Manual ▷ View online

– 9 –
KF-E42A10/E50A10
RM-GA004
1. Summary of Self-Diagnosis Function
– This device includes a self-diagnosis function.
– In case of abnormalities, the POWER/STANDBY indicator automatically blinks. It is possible to predict the
abnormality location by the number of blinks. The Instruction Manual describes blinking of the POWER/STANDBY
indicator.
– If the symptom is not reproduced sometimes in case of a malfunction, there is recording of whether a malfunction was
generated or not. Operate the remote command to confirm the matter on the screen and to predict the location of the
abnormality.
2. Diagnosis Items and Prediction of Malfunction Location
– When a malfunction occurs the POWER/STANDBY indicator only blinks for one of the following diagnosis items. In
case of two or more malfunctions, the item which first occurred blinks. If the malfunctions occurred simultaneously, the
item with the lower blink count blinks first.
– The screen display displays the results regarding all the diagnosis items listed below.
The display "0" means that no malfunctions occurred.
SECTION 1
SELF DIAGNOSTIC FUNCTION
Diagnosis Item
Lamp temp. over
Lamp cover error
Fan stopped
Lamp driver error
Low B error
Lamp error
Number of times
POWER/STANDBY
indicator blimks
2 times
3 times
4 times
5 times
6 times
LAMP-LED flashes
Probable Cause
Location
– Lamp cover is not
attached securely.
– Fan 1, Fan 2, Fan 3, Fan
4 or Fan 5 power is not
supplied.
– Fan connector is not
attached securely.
– Lamp driver is fulty.
– B_12V is not supplied.
– Lamp for the light source
burns out.
Defected symptoms
– No picture/No sound
– No picture/No sound
– No picture/No sound
– No picture/No sound
– No picture/No sound
3. Blinking count display of POWER/STANDBY indicator
– Release of POWER/STANDBY indicator blinking
The POWER/STANDBY indicator blinking display is released by removing the plug from the power or leaving for 2
minutes.
- One blink is not used for self-diagnosis.
- Example
Diagnosis item
LED blinks
Lamp cover
3 times
Fan
4 times
LED ON : 0.3sec
LED OFF : 0.3sec
LED OFF
3.0sec
POWER
STD/DUO
POWER/STANDBY
STANDBY
POWER
LAMP
TIMER
STD / DUO
– 10 –
KF-E42A10/E50A10
RM-GA004
4. Self-diagnosis screen displays
– In cases of malfunctions where it is not possible to determine the symptom such as when the power goes off
occasionally or when the screen disappears occasionally, there is a screen display on whether the malfunction occurred
or not in the past (and whether the detection circuit operated or not) in order to allow confirmation.
<Screen Display Method>
– Quickly press the remote command button in the following order from the standby state.
– The results display is not automatically cleared. In case of repairs and after repairs, check the self-diagnosis screen and
be sure to return the results display to "0".
– If the results display is not returned to "0" it will not be possible to judge a new malfunction after completing repairs.
<Method of Clearing Results Display>
<Method of Ending Self-Diagnosis Screen>
– When ending the self-diagnosis screen completely, turn the power switch OFF on the remote commander or the main
unit.
5. Self-Diagnosis function operation
1
:
Lamp_ERROR
When the lamp is broken.
2
:
lamp temp over
When the inside temperature sensed with IC7021, IC7180 and IC603 mounted on HB board, S2
board and C board respectively exceed the threshold, the lamp turns off.
3
:
lamp cover
When the lamp cover is opened the connector of the lamp is not fixed, the lamp turns off.
4
:
FAN
When any FAN (FAN1~FAN4) is stopping or harness is not connected correctly, the lamp turns
off.
5
:
Lamp Driver
When the ballast is not working with high voltage, the lamp turns off.
6
:
Low B error
When the voltage B_12V is low, TVM(TV u-com) detects it and makes turn off the lamp.
Channel
Vol
Be aware that this differs from
the method of entering the
service mode (Vol +).
DISPLAY
5
-
POWER
1
: LAMP_ERROR
0
 2
: LAMP_TEMP
0
 2
: TEMP_ERROR
0
No use
3
: LAMP_COVER
0
 4
: FAN_ERROR
0
5
: LAMP_DRIVER
0
6
: LOWB_ERROR
0
7
: AUDIO_PROT
0
No use
8
: D_OVP
0
No use
 10 : ATSC_OVP
0
No use
SELF CHECK
- Numeral "1" means a fault was detected one time
- Numeral "0" means that no fault was detected
1. Power off (Set to the standby mode)
2.
Channel
Vol
3. Channel
8
ENTER
DISPLAY
5
-
POWER
– 11 –
KF-E42A10/E50A10
RM-GA004
S2 board
AGU board
IC8002
TV Micro-computer
Fan1
Fan2
Fan3
Fan4
B board
T2 board
T1 board
4
IC7180
Temp.
Sensor
7
10
13
CN8002
3
1
2
1
3
1
SW
SW
HV-DET
Lamp Driver
IIC-TV
38
128
+12V
CN8403
CN8003
CN8003
CN8003
CN8410
CN8410
CN8410
Lamp
14
15
13
12
7
8
5
7
8
5
7
133
134
132
LAMP COVER
LAMP-HV-DET
LAMP-PROT
IIC
IC4100
BE Micro-computer
FAN-ERR
LB-ERR
HB board
Temp.
Sensor
IIC-TV
IIC
IC7021
BLOCK DIAGRAM
– 12 –
KF-E42A10/E50A10
RM-GA004
CONFIGRATION
00
SERVICE
CP18_COLOR_SYS
00
00A0
BE Micro
Press Channel-4
Press Channel-4
m
GW_SPECIAL
34
SERVICE
LAMP_TIME
02
00000014
BE Micro
m
Press Channel-5 7 times, 
Channel-1
GW_SPECIAL
34
SERVICE
PANEL_TIME
01
00000014
BE Micro
OPTION_E
20
SERVICE
LAMP
01
0000
BE Micro
m
Reading Lamp and Panel time
Use the following to determine the lamp and panel time of a set.
Screen Display Method
In standby mode, press the buttons on the Remote Commander sequentially, in rapid succession, as shown below:
1. Press [Display] , Channel 5 , Sound Volume [+] , Power ON
2. To enter BE-micro service menu, press JUMP 2 times.
3. To display the lamp time, press Channel-4.
The screen displays:
“ Total lamp time is 14 hours”
4. To display the panel time, press Channel-4.
The screen displays:
“ Total panel time is 14 hours”
5. To display the lamp time clear, press Channel-5
7 times and Channel-1.
To reset the lamp time press Channel-3 > MUTING > ENT.
WRITE (Character color is red) is momentarily displayed and the lamp time is reset to “0”.
Exiting Service Mode
To exit the service mode, please turn off the set using the Remote Commander or the power switch.
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