Sony KF-42E200A / KF-50E200A / KF-55E200A Service Manual ▷ View online
– 8 –
KF-42E200A/50E200A/55E200A
RM-GA007 RM-GA007 RM-GA007
CAUTION
These servicing instructions are for use by qualified service per-
sonnel only.
To reduce the risk of electric shock, do not perform any servicing
other than that contained in the operating instructions unless you
are qualified to do so.
sonnel only.
To reduce the risk of electric shock, do not perform any servicing
other than that contained in the operating instructions unless you
are qualified to do so.
WARNING!!
AN ISOLATION TRANSFORMER SHOULD BE USED DURING
ANY SERVICE TO AVOID POSSIBLE SHOCK HAZARD, BE-
CAUSE OF LIVE CHASSIS.
THE CHASSIS OF THIS RECElVER IS DIRECTLY CONNECTED
TO THE AC POWER LINE.
ANY SERVICE TO AVOID POSSIBLE SHOCK HAZARD, BE-
CAUSE OF LIVE CHASSIS.
THE CHASSIS OF THIS RECElVER IS DIRECTLY CONNECTED
TO THE AC POWER LINE.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
!
ON THE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE
PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART NUM-
BERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-
MENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT
ARE CRITICAL TO SAFE OPERATION ARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITI-
CAL COMPONENTS ARE REPLACED OR IMPROPER OPERA-
TION IS SUSPECTED.
PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART NUM-
BERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-
MENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT
ARE CRITICAL TO SAFE OPERATION ARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITI-
CAL COMPONENTS ARE REPLACED OR IMPROPER OPERA-
TION IS SUSPECTED.
– 9 –
KF-42E200A/50E200A/55E200A
RM-GA007 RM-GA007 RM-GA007
TABLE OF CONTENTS
Section
Title
Page
––––––
––––
––––
Section
Title
Page
––––––
––––
––––
1. SELF DIAGNOSIS FUNCTION
.....................
10
2. DISASSEMBLY
2-1.
Rear Cover ..........................................................
15
2-2.
P Board ...............................................................
16
2-3.
U Board, A Board and B Block Assembly ........
17
2-4.
U Board ...............................................................
17
2-5.
B Block Assembly and A Board ........................
18
2-6.
B Board ...............................................................
18
2-7.
G Board ...............................................................
19
2-8.
Dust Block Assembly .........................................
19
2-9.
Optics Unit ..........................................................
20
2-10. Sirocco Fan Cover ..............................................
20
2-11. Sirocco Fan .........................................................
20
2-12. Speaker Grill Assembly .....................................
21
2-13. HC Board ............................................................
21
2-14. Screen Frame Assembly .....................................
22
2-15. Bottom Cabinet Assembly .................................
23
3. ELECTRICAL ADJUSTMENTS
3-1.
Electrical Adjustment by Remote Commander ....
25
3-1-1. Method of Setting the Service Adjustment
Mode ...............................................................
25
3-1-2. Service Mode Adjustment ............................
25
3-1-3. Memory Write Confirmation Method ..........
25
3-1-4. Adjusting Buttons and Indicator ...................
25
3-2.
H/V Center Confirmation and Adjustment ........
26
3-3.
IRIS Adjustment .................................................
26
4. DIAGRAMS
4-1.
Block Diagram (1) ..............................................
27
Block Diagram (2) ..............................................
28
Block Diagram (3) ..............................................
29
Block Diagram (4) ..............................................
30
Block Diagram (5) ..............................................
31
Block Diagram (6) ..............................................
32
Block Diagram (7) ..............................................
33
Block Diagram (8) ..............................................
34
Block Diagram (9) ..............................................
35
Block Diagram (10) ............................................
36
Block Diagram (11) ............................................
37
4-2.
Frame Schematic Diagram .................................
38
4-3.
Circuit Boards Location .....................................
39
4-4.
Schematic Diagrams ...........................................
39
(1)
Schematic Diagram of A (1/4) Board ................
40
(2)
Schematic Diagram of A (2/4) Board ................
41
(3)
Schematic Diagram of A (3/4) Board ................
42
(4)
Schematic Diagram of A (4/4) Board ................
43
(5)
Schematic Diagram of B (1/9) Board ................
44
(6)
Schematic Diagram of B (2/9) Board ................
45
(7)
Schematic Diagram of B (3/9) Board ................
46
(8)
Schematic Diagram of B (4/9) Board ................
47
(9)
Schematic Diagram of B (5/9) Board ................
48
(10) Schematic Diagram of B (6/9) Board ................
49
(11) Schematic Diagram of B (7/9) Board ...............
50
(12) Schematic Diagram of B (8/9) Board ...............
51
(13) Schematic Diagram of B (9/9) Board ................
52
(14) Schematic Diagram of C Board ........................
53
(15) Schematic Diagram of G (1/2) Board ................
54
(16) Schematic Diagram of G (2/2) Board ................
55
(17) Schematic Diagram of HA Board .....................
56
(18) Schematic Diagram of HB Board .....................
57
(19) Schematic Diagram of HC Board ......................
58
(20) Schematic Diagram of P Board .........................
59
(21) Schematic Diagram of S2, T1, T2 Boards .........
60
(22) Schematic Diagram of U Board ........................
61
4-5.
Printed Wiring Boards ........................................
62
(1)
A Board (Side A) ................................................
62
(2)
A Board (Side B) ................................................
63
(3)
B Board (Side A) ................................................
64
(4)
B Board (Side B) ................................................
65
(5)
C Board (Side A) ................................................
66
(6)
C Board (Side B) ................................................
67
(7)
G Board (Side A) ................................................
68
(8)
G Board (Side B) ................................................
69
(9)
HA, AB Boards ..................................................
70
(10) HC, P, S2, T1, T2 Boards ..................................
71
(11) U Board ...............................................................
72
4-6.
Semiconductors ..................................................
73
5. EXPLODED VIEWS
5-1.
Screen Mirror Block, Cover ...............................
74
5-2.
B Block, Chassis Assembly ...............................
75
5-3.
Lamp Duct Assembly, Optics Unit Block .........
76
6. ELECTRICAL PARTS LIST
• A Board .....................................................................
77
• B Board .....................................................................
85
• C Board .....................................................................
99
• G Board ..................................................................... 100
• HA Board .................................................................. 103
• HB Board .................................................................. 103
• HC Board .................................................................. 104
• P Board ...................................................................... 104
• S2 Board .................................................................... 106
• T1 Board ................................................................... 107
• T2 Board ................................................................... 107
• U Board ..................................................................... 107
– 10 –
KF-42E200A/50E200A/55E200A
RM-GA007 RM-GA007 RM-GA007
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
- 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.
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.
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.
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
Temp error
c
r err
mp ove
or
3
2 times
7 times
8 times
10 times
times
- Lamp cover is not
attached securely.
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
- SET12V is not
supplied.
supplied.
- No picture/No sound
- No picture/No sound
- No picture/No sound
- No picture/No sound
- Lamp for the light
source burns out.
source burns out.
n s
Fa
topped
4 times
- Fan1, Fan2, F an 3,
power is not supplied.
- Fan connector is not
attached securely.
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
- No picture/No sound
Audio error
D-OVP error
ATSC OVP
- Fan caught wires or
harnnesses.
harnnesses.
- DC voltage is supplied
to Speaker.
- AU18V is not supplied.
to Speaker.
- AU18V is not supplied.
- Set temperature is high.
- Temp sensor connector
is not attached securety.
(CN7020 on HB board,
CN7180 on S2 board)
- Temp sensor connector
is not attached securety.
(CN7020 on HB board,
CN7180 on S2 board)
- Over voltage detection
for SET 12V.
for SET 12V.
- Voltage down detection
for SET 6V.
for SET 6V.
– 11 –
KF-42E200A/50E200A/55E200A
RM-GA007 RM-GA007 RM-GA007
3. Blinking count display of POWER/STANDBY indicator
- One blink is not used for self-diagnosis.
- Example
Diagnosis item
Diagnosis item
LED blinks
Lamp cover
3 times
Fan
4 times
LED ON : 0.3sec
LED OFF : 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.
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 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 +).
the method of entering the
service mode (Vol +).
LED OFF
3.0sec
DISPLAY
5
-
PO
TV
WER
1
: LAMP_ERROR
0
2
: LAMP_TEMP
0
2
: TEMP_ERROR
0
3
: LAMP_COVER
0
4
: FAN_ERROR
0
5
: LAMP_DRIVER
0
6
: LOWB_ERROR
0
7
: AUDIO_PROT
0
8
: D_OVP
0
10 : ATSC_OVP
0
SELF CHECK
- Numeral "1" means a fault was detected one time
- Numeral "0" means that no fault was detected
- Numeral "0" means that no fault was detected
Click on the first or last page to see other KF-42E200A / KF-50E200A / KF-55E200A service manuals if exist.