DOWNLOAD Sony KV-SW252M50 (serv.man2) Service Manual ↓ Size: 8.72 MB | Pages: 80 in PDF or view online for FREE

Model
KV-SW252M50 (serv.man2)
Pages
80
Size
8.72 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-sw252m50-sm2.pdf
Date

Sony KV-SW252M50 (serv.man2) Service Manual ▷ View online

– 4 –
KV-SW252M50/M60K/M61/M81/N60
RM-GA002
[+B overcurrent $OCP%]
Occurs when an overcurrent on the +B(135V) line is detected by pin 97 of IC001 (A board).
If the voltage of pin 97 of IC001 (A board) is more than 4V, the unit will automatically go to
standby.
[V-PROTECT]
Occurs when an absence of the vertical deflection pulse is detected by pin 116 of IC001
(A board).
[IK $AKB%]
If the RGB levels* do not balance within 15 sec after the power is turned on, this error will be
detected by IC001 (A board). TV will stay on, but there will be 5 times LED blinking.
Occurs when IC001 internal HV protect detects an abnormal H-Pulse (frequency) due to
improper power supply to IC001. TV cuts off high voltage power of anode CRT. No picture will be
detected. eg: IC602, IC604 go faulty.
* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)
A BOARD
IC001
Y/CHROMA JUNGLE
A BOARD
IC804
V.OUT
A BOARD
IC001
SYSTEM
A BOARD
IC003
MEMORY
FROM
C BOARD
IC751 PIN 5
IK
EHTO
RED LED
DISPLAY
SDA1
V.GUARD
SDA
5
F.B-PLS
3
116
45
97
7
A BOARD
FROM
Q816
COLLECTOR
30
POWER SUPPLY NG (+5V)
for VIDEO PROCESSOR
4. SELF DIAGNOSTIC SCREEN DISPLAY
5. HANDLING SELF DIAGNOSTIC SCREEN DISPLAY
6. SELF-DIAGNOSTIC CIRCUIT
2 : 
000
3 :
N/A
4 :
000
5 :
001
8 :
002
101 :
N/A
"0" means no fault has been detected.
"1" means a fault has been detected.
"2" means two faults has been detected.
"N/A" means not available for this models.
SELF DIAGNOSTIC
5
8
No.
Description
Method
1.
Display self diagnostic screen
[Display] t [Channel    ] t [Volume    ] t [Power / TV]
Note: The above must be performed while TV is on standby mode.
2.
Stop standby flash
i) Turn off power switch on main.
ii) Unplug power cord from the outlet.
3.
Clear fault result
In Self Diagnostic Screen, press, 
[Channel    ] t 
-
Note: Diagnostic results display on screen is not automatically cleared. Therefore,
clear result after completion of repair.
4.
Quit self diagnostic screen
Turn off power switch of remote commander or main unit.
– 5 –
KV-SW252M50/M60K/M61/M81/N60
RM-GA002
SECTION 1
DISASSEMBLY
1-2.
SPEAKER REMOVAL
1-4.
CHASSIS ASSY REMOVAL
(KV-SW252M60K)
1-1.
REAR COVER REMOVAL
2 Rear cover
1 Nine screws
     (+BVTP 4 
× 16)
1 Two screws
     (Washer Head) 
     (+P4x16)
1-3.
CHASSIS ASSY REMOVAL
(Except KV-SW252M60K)
1-5.
SERVICE POSITION
(Except KV-SW252M60K)
1-6.
SERVICE POSITION
( KV-SW252M60K)
– 6 –
KV-SW252M50/M60K/M61/M81/N60
RM-GA002
1 Two hooks 
3 One screw
(+BVTP 3 x 12)
2 F Board
1 One screw
 (+BVTP 
× 12
 Type2 
IT-3)
2 Two hooks 
6 One screw
 (+BVTP 
× 12
 Type2 
IT-3)
5 Terminal bracket
3 One screw
 (+BVTP 
× 12
 Type2 
IT-3)
4 Two screws
 (+BVTP 
× 12
 Type2 
IT-3)
1-7.
TERMINAL BRACKET REMOVAL
(Except KV-SW252M60K)
1-9. F2 (Except KV-SW252M50/
M
60K) and J3
BOARDS REMOVAL
3 One screw
    (+BVTP 3 
× 12)
1 One screw
     (+BVTP 4 
× 16 Type2 IT-3)
4 One screw
    (+BVTP 3 
× 12)
2 Terminal bracket
5 hooks
3 F2 Board
1 J3 Board
2 Two screws
     (+BVTP 3 
× 12 Type2 IT-3)
1-8.
TERMINAL BRACKET REMOVAL
 ( KV-SW252M60K)
1-11. F1 BOARD REMOVAL (KV-SW252M60K)
1-10. F1 BOARD REMOVAL
(Except KV-SW252M60K)
2 F1 Board
1 Two hooks
3 One screws
     (+BVTP 3 
× 12 Type2 IT-3)
1-12. H4 and H7 BOARDS REMOVAL
(Except KV-SW252M60K)
3 Four hooks
1 Five hooks
2 H7 Board
4 H4 Board
– 7 –
KV-SW252M50/M60K/M61/M81/N60
RM-GA002
5 Five screws
    (3 
× 12)(+) BVTAP
3 Four hooks
2 A Board
1-13. H4 and H7 BOARDS REMOVAL
 ( KV-SW252M60K)
2 Five Hooks     
5 Four Hooks     
4 H4 Board
H7 Board
    
3 One screws
     (+BVTAP 3 
× 12)
1-14. A BOARD REMOVAL
(Except KV-SW252M60K)
1-15. A BOARD REMOVAL  (KV-SW252M60K)
1 Five screws
     (+BVTAP 3 
× 12)
4 One screws (Washer head)
     (+BVTP 3 
× 12)
3 Four Hooks
2 A Board
1-16. B and K2 BOARDS REMOVAL
(KV-SW252M60K)
2 B Board
3 K2 Board
4 Two hooks
5 Two hooks
1 Three screws
     (+BVTAP 3 
× 12)
Page of 80
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Sony KV-SW252M50 (serv.man2) Service Manual ▷ Download

  • DOWNLOAD Sony KV-SW252M50 (serv.man2) Service Manual ↓ Size: 8.72 MB | Pages: 80 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony KV-SW252M50 (serv.man2) in PDF for free, which will help you to disassemble, recover, fix and repair Sony KV-SW252M50 (serv.man2) TV. Information contained in Sony KV-SW252M50 (serv.man2) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.