DOWNLOAD Sony KF-E42A10 / KF-E50A10 (serv.man2) Service Manual ↓ Size: 10.09 MB | Pages: 126 in PDF or view online for FREE

Model
KF-E42A10 KF-E50A10 (serv.man2)
Pages
126
Size
10.09 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kf-e42a10-kf-e50a10-sm2.pdf
Date

Sony KF-E42A10 / KF-E50A10 (serv.man2) Service Manual ▷ View online

– 9 –
KF-E42A10/E50A10
K
RM-GA004 RM-GA004
Section
Title
Page
––––––
––––
––––
4-5.
Printed Wiring Boards ........................................
51
(1)
AGU Board .........................................................
51
(2)
AS Board ............................................................
52
(3)
GT Boards ..........................................................
53
(4)
HA, HB Boards ..................................................
54
(5)
HC, HPC, P Boards ............................................
55
(6)
S2, T1, T2 Boards ..............................................
56
4-6.
Semiconductors ..................................................
57
5. EXPLODED VIEWS
5-1.
Screen Mirror Block, Cover ...............................
58
5-2.
B Block, Chassis Assembly ...............................
59
5-3.
Lamp Duct Assembly, Optics Unit Block .........
60
6. ELECTRICAL  PARTS  LIST
• AGU Board ...............................................................
61
• AS Board ...................................................................
70
• GT Board ..................................................................
74
• HA Board ..................................................................
76
• HB Board ..................................................................
76
• HC Board ..................................................................
77
• HPC Board ................................................................
77
• P Board ......................................................................
78
• S2 Board ....................................................................
80
• T1 Board ...................................................................
80
• T2 Board ...................................................................
80
KF-E42A10/E50A10
RM-GA004 RM-GA004
– 10 –
SECTION 1
SELF DIAGNOSIS FUNCTION
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.
Defected symptoms
La
Lamp temp. over
mp cover error
3
2 times
times
- Lamp cover is not
attached securely.
Diagnosis Item
Number of times
POWER/STANDBY
indicator blinks
Probable Cause
Location
Lamp driver error
5 times
- Lamp driver is faulty.
- No picture/No sound
Low B error
6 times
- B_12V is not
supplied.
- No picture/No sound
- Lamp for the light
source burns out.
Fan stopped
4 times
- Fan1, Fan2, F an 3, Fan
power is not
supplied.
- Fan connector is not
attached securely.
- No picture/No sound
Lamp error
LAMP-LED flashes
- No picture/No sound
- No picture/No sound
4 or Fan 5
– 11 –
KF-E42A10/E50A10
K
RM-GA004 RM-GA004
3. Blinking count display of POWER/STANDBY indicator
- 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
- 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.
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.
Channel
Vol
Be aware that this differs from
the method of entering the
service mode (Vol +).
LED OFF
3.0sec
DISPLAY
5
-
POWER
POWER
STD/DUO
POWER/STANDBY
STANDBY
POWER
LAMP
TIMER
STD / DUO
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
KF-E42A10/E50A10
RM-GA004 RM-GA004
– 12 –
- 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>
1. Power off (Set to the standby mode)
2.
Channel
Vol
3. Channel
<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
8
ENTER
DISPLAY
5
-
POWER
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.
Page of 126
Display

Click on the first or last page to see other KF-E42A10 / KF-E50A10 (serv.man2) service manuals if exist.